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  • 1
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-01-08
    Description: The Special Issue entitled “Advances in Rock Mechanics and Geotechnical Engineering” is devoted to the publication of the latest research, field works, and laboratory investigations in the area of rock mechanics and geotechnical engineering. This Special Issue has published novel contributions in different areas of geotechnical and geomechanical engineering such as slope and embankment, tunneling and underground space technologies, pile and foundation, rock mechanics and rock blasting, excavation and leveling projects, ground improvement techniques, unsaturated soil, practical issues in soft soil, mining technology, geo-environmental engineering, new laboratory testing, applied geology for construction, and novel geotechnical construction methods. The focus of this reprint is on the development of computational methods for solving problems in the fields of rock mechanics and geotechnical engineering.
    Keywords: strength prediction ; brittle rock ; grain-structure representation ; micro-properties ; bonded block models ; Voronoi tessellation ; structure-type rockburst ; evolution mechanism ; particle flow code ; flat-joint model ; pre-grouting ; soft coal mass ; coal-grout structure ; shear behavior ; quality improvement ; rock strength ; tensile behaviour ; neuro-fuzzy ; regression ; non-destructive tests ; paste filling ; slicing mining ; false roof stability ; optimal false roof thickness ; tree-based techniques ; feature selection ; pile bearing capacity ; gradient boosted tree ; random forest ; in situ stress ; rock blasting ; crack propagation ; model test ; rheological deformation ; key stratum ; roadway groups ; roadway deformation ; surrounding rock control ; triaxial creep experiment ; cyclic loading and unloading ; elasto-visco-plastic strain ; irrecoverable strain ; tertiary creep stage ; nonlinear creep damage model ; high-altitude slope ; BP neural network ; freeze-thaw cycle ; geological conditions ; mining method ; soft broken complex ore body ; improved AHP ; comprehensive evaluation index ; blasting ; back-break ; SVM ; metaheuristic algorithms ; moth–flame optimization ; whale optimization algorithm ; tilted strata ; roadway ; nonuniform deformation ; physical simulation ; HFDEM ; numerical method ; rock fracture ; strain rate ; mining engineering ; backfill mining ; high-concentration backfill ; elastic modulus ; K-fold cross-validation ; mining ; rock engineering ; sensitivity analysis ; XGBoost ; limit equilibrium method (LEM) ; limit analysis ; accuracy ; slope stability ; homogenous slopes ; error accuracy classification chart ; physical and mechanical responses ; Egyptian granodiorite ; thermal damage threshold ; microstructure ; thermal constructions ; rock slope analysis ; limited analysis method ; numerical methods ; combined/hybrid finite–discrete element method ; FDEM ; non-renewable ; clean coal technology ; waste of resources ; “110 construction method” ; collapse settlement control ; moisture content ; dry–wet cycles ; cyclic loading ; injury mechanism ; acoustic emission RA-AF ; thermal effect prediction model ; uniaxial compressive strength ; static Young’s modulus ; artificial neural network ; multilinear regression ; rock mass ; hydraulic conductivity ; sustainability ; rock mechanics ; geotechnical engineering ; geomechanical engineering ; mining technology ; natural stones ; temperature ; fire ; thermal effect ; point load strength ; porosity ; color ; gloss ; automated mineral identification ; LBP ; classification ; texture feature ; liquefaction potential ; prediction ; Bayesian optimization ; support vector machines ; optimization ; Hoek–Brown criterion ; Mohr failure envelope ; Balmer’s equation ; limit equilibrium analysis ; modified Bishop approach ; active earth pressure ; unsaturated narrow backfill ; interlayer shear stress ; arching effect ; thin-layer element method ; tunnel excavation ; cut blasting method ; LLB method ; uncharged hole ; numerical simulation ; spectrum index ; water content ; hyperspectral information ; V-type firing pattern ; collision fragmentation ; RSA ; ANN ; coupled stress-hydro effect ; uniaxial loading ; infrared radiation ; warning threshold ; non-destructive monitoring ; alteration ; tunnel ; stress field ; deformation field ; plastic zone ; flyrock ; weathering index (WI) ; equilibrium optimizer (EO) ; particle swarm optimization (PSO) ; extreme learning machine (ELM) ; artificial neural network (ANN) ; high-water material ; seawater ; water-cement ratio ; strength ; mining method optimization ; difficult-to-mine complicated orebody ; multiple attribute decision making ; Pythagorean fuzzy sets and TOPSIS method ; mechanized upward horizontal layering method ; plateau alluvial-lacustrine deposits ; round gravelly soil ; large scale direct shear test ; shear strength parameters ; Erbil ; geotechnical characterization ; GIS ; ANFIS ; differential evolution ; firefly algorithm ; frozen rock mass blasting ; ice-filled crack ; explosion stress wave propagation ; attenuation factor ; UCS ; intelligent and statistical methods ; sedimentary rocks ; modulus of deformation ; RMR ; in situ testing ; modelling ; instrumentation ; failure risk ; element failure probability ; spatial variability ; stochastic groundwater level ; upper bound method ; rock joints ; shear strength ; scale effects ; normal stress ; JRC ; PFC simulation ; water inrush ; precursor ; strain energy ; normalized ; sustainable mine ; blast-induced flyrock ; LSSVM ; prediction models ; salt cavern ; underground gas storage ; continuum-discrete coupled method ; thermal-mechanical coupling ; thermal damage ; marble strength ; direct and indirect methods ; correlations analysis ; artificial intelligence techniques ; performance indicators ; resonant column test ; torsional simple shear test ; damping ratio ; steady-state vibration ; free vibration decay ; bibliometric analysis ; pile foundation ; sustainable structure ; VOS viewer ; Web of Science ; red clay ; desiccation cracking mechanism ; digital image correlation technology ; strain ; displacement ; mineral carbonation ; comminution energy ; stress–strain relationship ; elastic properties ; radial distribution function ; crown deformation ; underground caverns ; parametric study ; multiple linear regression ; twin tunnels ; 3D numerical analysis ; surface settlement ; field measurement ; geotechnical and geological conditions ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues::TBX History of engineering & technology
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  • 2
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-11
    Description: A high demand for metals (cobalt, copper, gold, lithium, nickel, tin, vanadium, etc.) has been recorded for the past several decades, and this demand is expected to increase even further in the coming decades as the world moves to low-carbon technologies based on renewable energy sources (RESs) and electric vehicles (EVs) and away from the heavy use of fossil fuels. To meet the high forecasted demand, unconventional sources of metals such as low-grade complex ores, seafloor massive sulfides (SMSs), and wastes (e.g., tailings, metallurgical residues, and electronic wastes (e-wastes)) have become very important sources of metals; moreover, these metals should be extracted in a sustainable manner without negatively impacting the environment. This Special Issue focused on recent advances in the sustainable production of metals from the above-mentioned unconventional sources.This reprint is a compilation of a Special Issue of Minerals, “Sustainable Production of Metals for Low-Carbon Technologies”, where 13 papers contributed by experts in the area were published. Papers published in this Reprint cover a wide range of topics, including mineral processing (gravity concentration, magnetic separation, and flotation), hydrometallurgical techniques (leaching, solvent extraction, and cementation) to extract minerals/metals from primary and secondary resources. All the papers are of high scientific value and will be of great interest to readers of Minerals.
    Keywords: flotation circuit ; gold ore ; diagnosis ; optimization ; mass balance ; process simulation ; printed circuit boards ; heat treatment ; strength ; liberation ; Cu recovery ; physical separation ; ferronickel slag ; sulfuric acid leaching ; light magnesium oxide ; rare earth elements ; magnetic separation ; upgradation ; Khalzan Buregtei deposit ; NiMH batteries ; rare earth metals ; leaching ; solvent extraction ; precipitation ; gold ; cementation ; galvanic interaction ; aluminum ; activated carbon ; kinetics ; ammonium thiosulfate solution ; mass transfer ; fluorine ; occurrence ; removal ; gravity-flotation separation ; lignite ; lead ; zinc ; Al metal powder ; zinc plant leach residues ; flotation ; copper sulfides ; tailings ; carrier flotation ; flocculation ; oil agglomeration ; complex sulfide ores ; sphalerite ; anglesite ; extraction ; lithium ion battery ; recycling ; carbothermic reduction ; graphite ; porphyry copper deposits ; chalcopyrite ; pyrite ; n/a ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TT Other technologies and applied sciences::TTU Mining technology and engineering
    Language: English
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  • 3
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-01-08
    Description: This reprint aims to identify critical areas of water quality assessment, modeling, and mitigation in freshwater bodies, wastewater treatment, and groundwater aquifers, which require special attention. This links the volume to multiple regulatory options, including policy and governance measures, alternative ecosystem service dependence options (i.e., nature-based solutions), or mechanisms that link regions to international processes, like measures proposed under the Environmental Protection guidelines. The reprint will pay special attention to water quality assessment, modeling, and mitigation.
    Keywords: pumping station pipeline ; chaotic characteristic ; IVMD ; vibration response ; correlation dimension ; Lyapunov exponent ; monitoring ; mitigations ; spatial and temporal variabilities ; principal component analysis ; cluster analysis ; discriminant analysis ; water quality ; pollution ; correlation ; settlement ; damage evolution ; seepage/stress-damage method ; data monitoring ; groundwater ; heavy metals ; physicochemical parameters ; in-situ ; machine learning ; geostatistical analysis ; nanofiltration ; electrocoagulation ; nickel ; zinc ; copper ; water pollution ; adsorption ; copper ions ; adsorption mechanism ; adsorption kinetics ; thermodynamics ; expanded S-curve model ; domestic water usage ; economic development ; mathematical model ; Sentinel-2 ; chlorophyll ; turbidity ; lake ; concentration modeling of contaminants ; Cuernavaca aquifer ; hydrochemistry ; water quality index ; time series analysis ; spatial analysis ; water intensity ; LMDI model ; Tapio model ; technical effect ; industrial structure effect ; regional scale effect ; tannery effluent ; ozonation ; optimization ; turbidity removal ; Taguchi ; ecosystem services ; provisioning ecosystem services ; regulating ecosystem services ; cultural ecosystem services ; supporting ecosystem services ; modeling ; water quality indexing ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::K Economics, finance, business & management::KC Economics::KCN Environmental economics
    Language: English
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  • 4
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-11
    Description: The reprint, titled ”Sustainable Biopolymer-Based Composites: Processing, Characterization, and Application”, is composed of 32 scientific works of scholars that contributed their own expertise passion, and science to expand the boundaries of knowledge by addressing new challenges. The topic of new biopolymer-based composite materials is addressed from several aspects, from the development to characterization and application, in several fields of scientific interest.
    Keywords: biopolymer-treated soil ; Xanthan Gum ; Guar Gum ; soil strength ; durability ; cyclic wetting-drying ; biodegradability ; carbon nanotubes ; graphene ; life cycle analysis ; nanocomposites ; packaging ; remediation ; starch ; aging ; coarse wool fibre ; hybrid composites ; natural rubber ; PALF ; sisal fibre ; mulch films ; biopolymers ; SDGs ; plastic pollution ; polymers ; microfluidics ; lab-on-chip ; biomedical engineering ; drug carrier ; artificial cell ; 3D bioprinting ; hydrogel films ; gelatin ; antimicrobial activity ; food packaging ; TGA ; biocomposites ; renewable sources ; wood waste ; waste valorization ; primerless-wet bonding ; resin adhesive system ; hybrid layer ; tensile bond strength ; micro-seal ; luting resin ; dental prosthesis ; fixed prosthodontics ; bioplastics ; conventional polymers ; renewable resources ; LCA ; fish collagen ; fish industry waste ; collagen extraction ; nano collagen ; sustainability ; poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) ; cellulose nanofiber ; bionanocomposite ; melt-extrusion processing ; optimization ; response surface methodology ; acrylonitrile butadiene rubber ; fish scale ; bis(triethoxysilylpropyl)tetrasulfide ; composite ; compatibilizer ; collagen biopolymer ; unicornfish bone ; acid extraction ; characterization ; biocompatible ; biodegradable ; scaffolds ; tissue engineering ; lignin biopolymer ; erosion ; triaxial test ; wetting and drying cycles ; silt ; green macroalga ; red sea ; Chaetomorpha linum ; cellulose nanocrystals ; green silver nanoparticles ; bio-nanocomposite films ; optical properties ; Torenia fournieri ; zinc oxide nanoparticle ; smart packaging sensors ; wound healing ; biodegradable plastic ; circular economy ; pineapple ; tensile strength ; silver nanoparticles ; green synthesis ; Piper betle L. leaf ; pig lining leather ; antibacterial activity ; antifungal activity ; polylactic acid (PLA) ; spent coffee grounds (SCG) ; rheological properties ; mechanical properties ; chitosan ; nanofiber ; preparation ; applications ; wound dressing ; acetylation ; flour ; physicochemical properties ; modification ; wound dressings ; hydrogel ; honey ; natural polymer ; synthetic polymer ; PLA ; biodegradation ; sports equipment manufacturing ; arrowroot starch ; heat-moisture treatment ; octenylsuccinilation ; dual-modification ; functional properties ; glabridin ; 3-O-Ethyl-L-ascorbic acid ; tranexamic acid ; microneedles ; pigmentation ; multifunctional drug ; hydrophilic bioplastics ; gum Arabic ; polyvinyl alcohol ; casting of poly-(methyl methacrylate) ; dehydration ; phosphorus pentoxide ; peeling ; microbial biodegradation ; green composites ; stem fiber ; crystallinity ; thermal behavior ; reinforcement material ; pineapple leaf fiber ; flax ; poly(butylene succinate) ; unidirectional composites ; microstructure ; sustainable materials ; epoxy resin ; Schiff base ; epoxidized soybean oil ; epoxy vitrimer ; reprocessability ; recyclability ; agroindustrial wastes ; biomaterials ; cellulose ; lignocellulosic biomass ; polylactic acid ; coir fiber ; bamboo leaf fiber ; annealing ; biocomposite ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TD Industrial chemistry and manufacturing technologies::TDC Industrial chemistry and chemical engineering
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  • 5
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-11
    Description: The Special Issue entitled “Advances in Rock Mechanics and Geotechnical Engineering” is devoted to the publication of the latest research, field works, and laboratory investigations in the area of rock mechanics and geotechnical engineering. This Special Issue has published novel contributions in different areas of geotechnical and geomechanical engineering such as slope and embankment, tunneling and underground space technologies, pile and foundation, rock mechanics and rock blasting, excavation and leveling projects, ground improvement techniques, unsaturated soil, practical issues in soft soil, mining technology, geo-environmental engineering, new laboratory testing, applied geology for construction, and novel geotechnical construction methods. The focus of this reprint is on the development of computational methods for solving problems in the fields of rock mechanics and geotechnical engineering.
    Keywords: strength prediction ; brittle rock ; grain-structure representation ; micro-properties ; bonded block models ; Voronoi tessellation ; structure-type rockburst ; evolution mechanism ; particle flow code ; flat-joint model ; pre-grouting ; soft coal mass ; coal-grout structure ; shear behavior ; quality improvement ; rock strength ; tensile behaviour ; neuro-fuzzy ; regression ; non-destructive tests ; paste filling ; slicing mining ; false roof stability ; optimal false roof thickness ; tree-based techniques ; feature selection ; pile bearing capacity ; gradient boosted tree ; random forest ; in situ stress ; rock blasting ; crack propagation ; model test ; rheological deformation ; key stratum ; roadway groups ; roadway deformation ; surrounding rock control ; triaxial creep experiment ; cyclic loading and unloading ; elasto-visco-plastic strain ; irrecoverable strain ; tertiary creep stage ; nonlinear creep damage model ; high-altitude slope ; BP neural network ; freeze-thaw cycle ; geological conditions ; mining method ; soft broken complex ore body ; improved AHP ; comprehensive evaluation index ; blasting ; back-break ; SVM ; metaheuristic algorithms ; moth–flame optimization ; whale optimization algorithm ; tilted strata ; roadway ; nonuniform deformation ; physical simulation ; HFDEM ; numerical method ; rock fracture ; strain rate ; mining engineering ; backfill mining ; high-concentration backfill ; elastic modulus ; K-fold cross-validation ; mining ; rock engineering ; sensitivity analysis ; XGBoost ; limit equilibrium method (LEM) ; limit analysis ; accuracy ; slope stability ; homogenous slopes ; error accuracy classification chart ; physical and mechanical responses ; Egyptian granodiorite ; thermal damage threshold ; microstructure ; thermal constructions ; rock slope analysis ; limited analysis method ; numerical methods ; combined/hybrid finite–discrete element method ; FDEM ; non-renewable ; clean coal technology ; waste of resources ; “110 construction method” ; collapse settlement control ; moisture content ; dry–wet cycles ; cyclic loading ; injury mechanism ; acoustic emission RA-AF ; thermal effect prediction model ; uniaxial compressive strength ; static Young’s modulus ; artificial neural network ; multilinear regression ; rock mass ; hydraulic conductivity ; sustainability ; rock mechanics ; geotechnical engineering ; geomechanical engineering ; mining technology ; natural stones ; temperature ; fire ; thermal effect ; point load strength ; porosity ; color ; gloss ; automated mineral identification ; LBP ; classification ; texture feature ; liquefaction potential ; prediction ; Bayesian optimization ; support vector machines ; optimization ; Hoek–Brown criterion ; Mohr failure envelope ; Balmer’s equation ; limit equilibrium analysis ; modified Bishop approach ; active earth pressure ; unsaturated narrow backfill ; interlayer shear stress ; arching effect ; thin-layer element method ; tunnel excavation ; cut blasting method ; LLB method ; uncharged hole ; numerical simulation ; spectrum index ; water content ; hyperspectral information ; V-type firing pattern ; collision fragmentation ; RSA ; ANN ; coupled stress-hydro effect ; uniaxial loading ; infrared radiation ; warning threshold ; non-destructive monitoring ; alteration ; tunnel ; stress field ; deformation field ; plastic zone ; flyrock ; weathering index (WI) ; equilibrium optimizer (EO) ; particle swarm optimization (PSO) ; extreme learning machine (ELM) ; artificial neural network (ANN) ; high-water material ; seawater ; water-cement ratio ; strength ; mining method optimization ; difficult-to-mine complicated orebody ; multiple attribute decision making ; Pythagorean fuzzy sets and TOPSIS method ; mechanized upward horizontal layering method ; plateau alluvial-lacustrine deposits ; round gravelly soil ; large scale direct shear test ; shear strength parameters ; Erbil ; geotechnical characterization ; GIS ; ANFIS ; differential evolution ; firefly algorithm ; frozen rock mass blasting ; ice-filled crack ; explosion stress wave propagation ; attenuation factor ; UCS ; intelligent and statistical methods ; sedimentary rocks ; modulus of deformation ; RMR ; in situ testing ; modelling ; instrumentation ; failure risk ; element failure probability ; spatial variability ; stochastic groundwater level ; upper bound method ; rock joints ; shear strength ; scale effects ; normal stress ; JRC ; PFC simulation ; water inrush ; precursor ; strain energy ; normalized ; sustainable mine ; blast-induced flyrock ; LSSVM ; prediction models ; salt cavern ; underground gas storage ; continuum-discrete coupled method ; thermal-mechanical coupling ; thermal damage ; marble strength ; direct and indirect methods ; correlations analysis ; artificial intelligence techniques ; performance indicators ; resonant column test ; torsional simple shear test ; damping ratio ; steady-state vibration ; free vibration decay ; bibliometric analysis ; pile foundation ; sustainable structure ; VOS viewer ; Web of Science ; red clay ; desiccation cracking mechanism ; digital image correlation technology ; strain ; displacement ; mineral carbonation ; comminution energy ; stress–strain relationship ; elastic properties ; radial distribution function ; crown deformation ; underground caverns ; parametric study ; multiple linear regression ; twin tunnels ; 3D numerical analysis ; surface settlement ; field measurement ; geotechnical and geological conditions ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
    Language: English
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  • 6
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-01-08
    Description: Biomaterials are natural or artificial materials used to manufacture implants to replace lost or diseased biological structures in order to restore form and function. Biomaterials that require long-term service, such as orthopedic implants, need good physical and chemical stability, such as stainless steel and titanium alloys. The application of metal in biomedicine is becoming more and more common, but due to its various limitations, it is often necessary to modify its surface to obtain better performance and better clinical application. There are many technologies for the surface modification of medical metals, such as laser surface modification, chemical treatment, plasma surface modification, etc., and these technologies are still being developed to meet market demand. This reprint will provide important contributions related to the announced topics, focusing on biomedical metals and the surface modification technologies of biomedical metals.
    Keywords: titanium ; surface modification ; surface topographies ; multifunctional surfaces ; metamaterials ; 4D printing ; ZK60 magnesium ; micro-arc oxidation ; atmospheric plasma spraying ; corrosion ; additive manufacturing ; porous titanium ; implant coatings ; antibacterial agent ; laser cladding ; Ca/P bio-ceramic coating ; biocompatibility ; bioactivity ; wear resistance ; magnetite ; conversion coating ; optimization ; invitro cytotoxicity ; beta titanium alloy ; elastic modulus ; corrosion property ; osseointegration ; Ti-matrix composites (TMCs) ; graphene oxide (GO) ; mechanical properties ; reinforcement ; laser-induced periodic surface structures ; femtosecond laser processing ; functional surfaces ; application ; composite ; 3D printing ; bioresorbable Fe-Cu-hydroxyapatite composite ; titanium alloy ; phosphate layer ; biomaterial ; zinc phosphate ; scholzite ; PVA films ; boric acid ; polyhexamethylene guanidine hydrochloride ; antimicrobial properties ; surface treatment ; titanium alloys ; microstructure ; physicochemical properties ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::P Mathematics & science::PH Physics
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  • 7
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-03-24
    Description: This book reprints articles from the Special Issue "Advances in Computer-Aided Technology" published online in the open-access journal Machines (ISSN 2075-1702). This book consists of thirteen published articles. This Special Issue belongs to the "Mechatronic and Intelligent Machines" section. Industry 4.0 is characterized by the integration of advanced technologies, such as artificial intelligence, the Internet of Things, and cloud computing, into traditional manufacturing and production processes. CAx (Computer-Aided Systems) systems are a set of computer software tools used in engineering and product design, covering various stages of the product development cycle. Advanced CAx tools combine many different aspects of product lifecycle management (PLM), including design, finite element analysis (FEA), manufacturing, production planning and product. In connection with the transition to Industry 4.0 concepts, the concept of the digital twin comes to the fore, and existing CAx systems must adapt to this trend. The Special Issue deals with a number of research areas, such as: - New trends in CAx systems; Digital manufacturing; Internet of Things in manufacturing; Simulation of production systems and processes; Systems for advanced finite element analysis; Material engineering; Digitization and 3D scanning.
    Keywords: tensor glyph ; golden section ; vector space ; sandwich ; springback ; Vegter yield criterion ; numerical simulation ; PAM-STAMP 2G ; isotropic hardening law ; kinematic hardening law ; bending ; Bauschinger effect ; machine learning ; artificial neural network ; additive manufacturing ; high precision metrology ; CAD ; predictive model ; ship hull structure ; computer-aided design of structure ; database ; function soft block ; gun drill tool ; deep-drilling technology ; optimization ; tool life ; angle ; digital implant impression ; interimplant distance ; intraoral scanner ; trueness ; sewing machine ; needle bar ; floating needle ; electromagnet ; electromagnetic simulation ; noise reduction ; cycloidal gearbox ; friction ; actuator ; servomotor ; permanent magnet synchronous machine ; fixture design ; machining ; sustainable manufacturing ; process innovation ; complex-shape part ; signal processing ; monitoring system ; laser profiler ; surface roughness ; quality assessment ; non-contact method ; vision-based method ; frequency analysis ; abrasive water jet ; wood plastic composite ; natural reinforcement ; knitting machine ; stroke ; drive ; simulation ; cylinder ; dynamic modeling ; load spectrum reconstruction ; fatigue test ; hydraulic excavator ; n/a ; thema EDItEUR::C Language and Linguistics
    Language: English
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  • 8
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-02-02
    Description: The Special Issue “Demand Response in Smart Grids” includes 11 papers on a variety of topics. The success of this Special Issue demonstrates the relevance of demand response programs and events in the operation of power and energy systems at both the distribution level and at the wide power system level. This reprint addresses the design, implementation, and operation of demand response programs, with focus on methods and techniques to achieve an optimized operation as well as on the electricity consumer.
    Keywords: demand response ; population evolution ; irrational behavior ; Markov state ; non-cooperative game ; solid electric thermal storage ; cyber–physical model ; K-means ; support vector machine ; neural network ; data analysis ; demand response (DR), load profile clustering ; k-means ; targeting of customer ; aggregator ; ramp period ; real-time simulation ; multi-objective optimization ; social welfare metrics ; energy allocation ; load disaggregation ; percentage total harmonic distortion and non-intrusive identification of load pattern ; charging strategy ; optimization ; electricity pricing ; electric vehicle ; flexibility ; flexibility market ; home energy management system ; energy flexibility ; industrial energy management ; demand side management ; control approaches ; energy management ; optimization method ; objective function ; control constraints ; Demand Response ; dynamic thermal rating ; hosting capacity ; transformer ; n/a ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues::TBX History of engineering & technology
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  • 9
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-03-28
    Description: The diversity of wood and non-wood forest products is enormous and reflected in their anatomical, physical and chemical properties as well as their potential applications. Special attention should be given to lesser-known species and even to invasive species, which may be profitable when properly managed, thereby decreasing the overexploitation of threatened species. Besides the market importance of stem wood, other tree components and non-wood forest products, often regarded simply as forest residual materials, are valuable forest resources with various potential applications that can strengthen the circular economy. Assessing the characteristics of these diverse materials, such as their structure and anatomy as well as their physical and chemical properties, is fundamental for evaluating their potential and increasing high-quality end-uses. This knowledge will also contribute to sustainable forest management with enhanced forest diversity and species conservation in addition to the reinforcement of certification and environmental policies.
    Keywords: Calamus zollingeri ; Calamus ornatus ; dynamic vapor sorption ; basic density ; volumetric swelling ; white rot ; mold ; Quercus suber L. ; seasonal variation ; cuticular waxes ; leaves ; new species ; morphology ; wood ; properties ; chemical composition ; spectroscopy ; chemometrics ; unconventional species ; Quercus suber ; cork borer ; cork ; phenolics ; tropical species ; wood anatomy ; wood density ; wood color ; multivariate analysis ; species diversity ; dark-brown zone ; lenticular filling tissue ; quantitative anatomical characteristics ; Quercus variabilis ; reproduction cork ; scanning electron microscopy ; sclereid ; virgin cork ; Cytisus scoparius ; liquefied ; optimization ; eco-valorization ; agro-industrial residues ; Asparagaceae ; lignocellulose ; crystalline cellulose ; syringyl/guaiacyl ; anatomy ; Tilia amurensis Rupr. ; Tilia mandshurica Rupr. & Maxim. ; branch ; wood properties ; papermaking material ; tropical timber ; color parameters ; mid-infrared spectroscopy ; FTIR ratios ; environmental factors ; West African Sahel ; Cupressus funebris Endl. wood ; wood knots ; physical properties ; wood color properties ; n/a ; thema EDItEUR::G Reference, Information and Interdisciplinary subjects::GP Research and information: general ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences ; thema EDItEUR::K Economics, Finance, Business and Management::KN Industry and industrial studies::KNA Agribusiness and primary industries::KNAL Forestry industry
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  • 10
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-04-05
    Description: Analytical chemistry is bound to face growing challenges in the future, especially for the quantification of trace analytes in complex matrices. Although the development of increasingly sensitive and specific instrumental techniques has achieved remarkable results, sample preparation is still a fundamental step, often limiting the whole workflow. In the context spawned by the recent international environmental policies that are responsive to the rapport of human activities with the surrounding environment, chemistry cannot hesitate to give its contribution. Almost pioneeringly, in analytical chemistry, we have been talking for some time about “green analytical chemistry”, its guiding principles, and the development of eco-friendly analytical approaches. However, the new and still open challenge is advance not only in eco-compatibility but mainly in eco-sustainability, rooting the future of analytical chemistry in new perspective aimed at minimizing the environmental impact of the analytical process by placing environmental cost as a priority aim on par with analytical performance. This is the reprint of a Special Issue that includes contributions focused on the progress in analytical chemistry based on the arguments previously raised and discussed, with a particular reference to eco-compatibility and eco-sustainability. The contributions include the development of low environmental impact methods and/or techniques or their applications.
    Keywords: dyes ; fatty acids ; microextraction ; magnetic ionic liquid ; sample preparation ; dispersive liquid–liquid microextraction ; single drop microextraction ; GC ; HPLC ; ionic liquids ; denitrogenation ; extraction ; pyridine ; quinoline ; aniline ; simulated oil ; adsorption ; gum Arabic ; magnetite ; nano-composite ; lead(II) ; mercury removal ; magnetic ; manganese ; cobalt ; iron ; spinel ; crosslinker ; phenolic acids ; vinylimidazole ; anion exchanger ; co-polymer ; solid-phase extraction ; sustainable analytical sample preparation ; indoor air quality ; fragrances ; indoor pollution ; endocrine disruptors ; analytical method ; GC-MS ; musks fragrances ; emerging contaminants ; α-isomethylionone ; halloysite nanotubes ; organosilyl-sulfonated halloysite nanotubes ; solid phase extraction ; pyrrolizidine alkaloids ; honey ; chlorzoxazone ; greener HPTLC ; paracetamol ; simultaneous detection ; validation ; AGREE ; traditional HPTLC ; vitamin D3 ; pulsed electric field ; bioactive compounds ; optimization ; mushrooms ; Agaricus bisporus ; phenyboronic-acid-functionalized ; Fe3O4 magnetic nanoparticles ; ortho-dihydroxy-containing compounds ; n/a ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::P Mathematics & science::PN Chemistry
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  • 11
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-04-05
    Description: Civil engineering structures may vibrate due to different sources of excitations such as earthquakes, wind, traffic, humans, etc. The resulting vibrations may not be acceptable from the perspective of vibration comfort or can even impair the structure's safety. Depending on the excitation mechanism, anti-vibration measures range from increasing the structural damping using local dampers, decoupling the structure from the disturbance using vibration isolators and compensating for the excitation forces using vibration compensators. The Special Issue "Efficient Damping and Isolation Systems for Civil Structures" presents some of the recent advances in the associated fields of research and development.
    Keywords: isolation ; high damping rubber bearing ; low shape factor ; performance test ; experiment ; three-dimensional (3D) seismic isolation ; vertical seismic isolation device ; disc spring ; helical coil spring ; steel damper ; laminated rubber bearing ; seismic energy dissipation ; nuclear power plant equipment ; seismic isolation frequency ; hysteretic behavior ; cable ; control ; damping ; semi-active ; negative stiffness ; vibration ; liquid storage tank ; MetaFoundation ; time domain analysis ; earthquake ; passive control ; stop band ; suspended ceiling systems ; passively controlled structure ; pulley tackle mechanism ; shake table test ; simulation analysis ; tower-like structures ; tuned liquid gas damper ; elastic membrane ; gas spring ; gas volume ; SA-TLGD ; TLCGD ; TLCD ; TMD ; inerter ; optimization ; TMDI ; vibration mitigation ; tuned sloshing damper ; TSD ; tuned mass damper ; numerical simulation ; coupled simulation ; computational wind engineering ; CWE ; hysteresis ; internal resonances ; nonlinear modal interaction ; n/a ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues::TBX History of engineering & technology
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  • 12
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-01-05
    Description: The papers published in this Special Issue report on recent studies investigating the exploitation of by-products produced by the food industry. The topics investigated include the extraction setups used for valuable food waste by-products and their applications as adjuncts to food preparation; the appropriate selection of solvents and extraction processes; and the interactions between extracted fractions and supplementary foods. The papers evaluate a wide variety of foodstuffs and provide results regarding the extension their shelf-lives and activities as functional foods.
    Keywords: by-product ; rheological properties ; optimization ; melting profile ; antioxidant activity ; mayonnaise ; olive mill wastewater ; oxidative stability ; phenolic extract ; pork ; fatty acid ; amino acid ; mineral ; meat ; sustainability ; spent biomass ; prebiotic potential ; enzymatic digestion ; biorefinery ; circular economy ; by-products ; ovine scotta ; bioactive peptides ; bromelain ; pancreatin ; dipeptidyl peptidase IV inhibition ; ovine second whey cheese ; enzymatic hydrolysis ; wasted bread ; bioprocessing ; lactic acid bacteria ; soil amendment ; byproducts ; vegetable oil industry ; phenolics ; flavonoids ; photochemiluminescence ; cold-pressed oil by-product ; gum ; thixotropic behavior ; low-fat vegan mayonnaise ; thickeners ; gelling agents ; tomato pomace ; lycopene ; β-carotene ; extraction ; food by-products ; deep eutectic solvents ; non-thermal drying ; stilbene ; vine shoots ; viticulture waste ; trans-resveratrol ; ε-viniferin ; Italian varieties ; no-waste ; omega-3 ; smart sensors ; reuse ; fish oil industry ; recovery ; chemometrics ; lipid profile ; aquafaba ; cold-pressed oils ; confocal laser scanning microscopy ; egg replacement ; physicochemical properties ; radical scavenging activity ; vegan mayonnaise ; Amberlite resin ; hazelnut skin ; polyphenols ; Pinot noir pomace ; solid–liquid extraction ; valorization ; fatty acids ; derivatization ; cranberry pomace ; dietary fiber ; technological properties ; kiwi byproducts ; probiotic ; prebiotic ; Lactobacillus casei ; ingredients ; functional foods ; microbial spoilage ; lipidic oxidation ; antioxidant ; predictive microbiology ; food preservation ; food safety ; sustainable strategy ; by-product reuse ; kinetic parameters ; Olea europaea ; waste reuse ; inulin ; high polymerization degree ; functional pasta ; glycemic index ; prebiotics growth ; n/a ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::P Mathematics & science::PS Biology, life sciences ; bic Book Industry Communication::T Technology, engineering, agriculture
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  • 13
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-02-02
    Description: The sustainable development of our planet depends on the use of energy. The increasing world population inevitably causes an increase in the demand for energy, which, on the one hand, threatens us with the potential to encounter a shortage of energy supply, and, on the other hand, causes the deterioration of the environment. Therefore, our task is to reduce this demand through different innovative solutions (i.e., both technological and social). Social marketing and economic policies can also play their role by affecting the behavior of households and companies and by causing behavioral change oriented to energy stewardship, with an overall switch to renewable energy resources. This reprint provides a platform for the exchange of a wide range of ideas, which, ultimately, would facilitate driving societies toward long-term energy efficiency.
    Keywords: natural resources ; globalization ; energy ; nonparametric causality in quantiles ; energy security ; power market ; near-zero emission technologies ; oxy-fuel combustion cycles ; emission rights sales mechanism ; economic assessment ; Oil Companies ; innovations ; investments in R&amp ; D ; forecasting the Innovation activities ; industry 4.0 ; Agenda 2030 ; sustainable human development ; measuring development ; energy sustainability ; indirect measurement ; composed indexes ; forecasting ; linear regression ; planning ; polynomial regression ; power supply ; green building ; housing projects management ; sustainable construction ; renewable energy sources ; real estate developers ; deviation ; energy dependence ; energy efficiency management ; energy saving ; cost ; risk limit ; energy industry ; energy supply ; energy intensity ; energy efficiency ; energy industry risks ; dilemma ; development ; Kazakhstan ; energy transitions ; Latin America ; power system ; sustainability ; economic growth ; pollution ; renewable energy ; oil and gas industry ; investments ; rating ; competitiveness ; financial analysis ; risk ; profitability ; merchandising technologies ; correlation ; scenario ; social development ; optimization ; investment ; financial portfolio ; financial leverage ; integral rating ; industry rating ; high-tech company ; decision-making ; minimax ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::K Economics, finance, business & management::KC Economics::KCN Environmental economics
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  • 14
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-11
    Description: This reprint aims to address the challenges modern-day buildings face in the context of high energy and resource consumption and climate change. One of the ways to address the issues is holistic design and operation of high-performance buildings in the area of energy efficiency, occupant health, and comfort. All this should be achieved through synergic interconnectedness between parameters such as the indoor–outdoor environment, sustainability, and resilience. Through different chapters, this reprint highlights the key areas, namely, the optimization of building design parameters, the impact of the use of modern-day phase-change materials, the adaptation of occupants and buildings to climate change, the mitigation of urban overheating by cool roofs, and reducing energy demand and CO2 emissions.
    Keywords: climate change ; bioclimatic design ; passive design ; energy efficiency ; overheating ; building resilience ; robustness ; shape factor ; building ; thermal envelope ; energy demand ; CO2 emissions ; white roofs ; cool roofs ; reflective material ; cost-benefit ; energy savings ; urban heat island ; thermal comfort ; indoor environmental quality ; educational buildings ; energy consumptions ; local discomfort ; building energy retrofitting ; phase change materials ; aerogel render ; heat stress risk ; emission ; lifecycle cost ; peak cooling load ; residential building ; building envelope ; multi-objective genetic algorithm ; TRNSYS ; climate zone ; multi-criteria decision making ; CRITIC ; TOPSIS ; capture devices ; variables ; field surveys ; thermal perceptions ; adaptive actions ; hostel dormitories ; composite climate of India ; reflective materials ; mitigation ; outdoor comfort ; visual comfort ; heat stress ; optimization ; skyscrapers ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
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  • 15
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-03-28
    Description: We are honored to announce this reprint, containing contributions from the top experts in the field of logic and fuzzy logic. In total, this reprint consists of 10 papers that were selected from more than 20 submissions. The 10 papers comprising the reprint are the product of re-known experts in fuzzy logic from all over the world, such as Canada, Poland, China, Slovakia, Lithuania, Turkey, Pakistan, Germany, Serbia, Portugal, Taiwan, Norway, India, Saudi Arabia, Thailand, and Mexico. We expect that the papers comprising the Special Issue will contribute to an advancement in the state of the art in the fields of logic and also fuzzy logic.
    Keywords: fuzzy-sets ; fuzzy-random variables ; distribution generating function ; fuzzy binomial distribution ; Fuchs distribution ; MADM ; Aczel–Alsina operations ; IVIFNs ; IVIF Aczel–Alsina geometric aggregation operators ; interval type-3 fuzzy theory ; fuzzy control ; manufacturing ; Vietè’s method ; Newton–Raphson method ; regula falsi method ; testing of algorithms ; foundations of mathematics ; arithmetic ; set theory ; spatial fuzzy C-means ; COVID-19 ; rustbelt states ; extrapolation ; interpolation ; proving ; refuting ; improving ; fuzzy set ; linear Diophantine fuzzy sets ; linear Diophantine fuzzy relations ; level cut relations ; rough approximations on two universes ; decision analysis ; multi-valued logic trees ; hydraulic proportional valve ; weighting factors ; optimization ; granular computing ; formal concept analysis ; intuitionistic fuzzy sets ; periodicity ; spatial and temporal aspects ; knowledge discovery ; n/a ; thema EDItEUR::G Reference, Information and Interdisciplinary subjects::GP Research and information: general ; thema EDItEUR::P Mathematics and Science
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  • 16
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-11-30
    Description: With the deep integration of cutting-edge technologies such as artificial intelligence, big data, and the Internet, ship propulsion control systems are also gradually undergoing a transformation from the mode of automatic control to intelligent control. In particular, the smart ship concept has become a key factor in the maritime industry’s ambition to achieve sustainable green development. Currently, the development of all-electric propulsion and innovative hybrid ship propulsion systems is a priority, so that the efficiency of ship propulsion systems might be improved. Therefore, the aim of this monograph is to describe the intelligent control of ship propulsion systems. In this regard, this monograph deals with new approaches to the design of ship power systems. Among them, in terms of intelligent control, and using simulation experiments for comparison, the learning ability relied on by artificial intelligence is utilized to handle the collected data and generate corresponding commands, thus ensuring the safety and stability of the ship's movement. The main objective of this Special Issue is to fill existing knowledge gaps and provide additional ideas on the intelligent control of marine propulsion systems. Finally, we would like to express our deepest gratitude to the staff of MDPI Books and the editorial team of Marine Science and Engineering, especially the assistant editors of this Special Issue, the gifted authors, and the diligent and expert reviewers.
    Keywords: automation ; autonomous guidance ; green propulsion technologies ; marine engine ; safety and efficiency ; ship propulsion dynamics ; simulation ; smart control ; optimization ; weather routing ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues
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  • 17
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-09-11
    Description: This Special Issue aimed to collate recent works regarding the planning and control of energy systems. In particular, this Special Issue focuses on microgrids. This kind of system enables optimal integration of renewable energy sources, electric vehicles, energy storage, and demand-side management strategies, thus proposing a valuable framework through which to implement the decarbonization of the electricity sector. Special attention is given to those works devoted to systems with high penetration of renewables and advanced demand response strategies. Literature reviews are also included in this Special Issue, and some real-life experiences are described and analyzed.
    Keywords: optimization algorithm ; control system ; renewable energy ; PSO ; GWO ; battery storage energy ; electric vehicle ; photovoltaics ; BESS ; optimization ; AOA algorithm ; uncertainty ; distribution network ; DC multi-microgrid system ; carbon emissions ; economic dispatch ; across-time-and-space energy transmission ; cooperative multi-objective optimization ; PV ; wind turbine ; biomass system ; heap-based optimizer ; Franklin’s and Coulomb’s algorithm ; sooty tern optimization ; energy cost ; metaheuristics ; solar cell systems ; elephant herding optimization ; alpha tuned EHO ; cultural-based ; biased initialization ; parameter identification ; single diode ; double diode ; three diodes ; modular multilevel converter (MMC) ; fault-tolerant ; voltage source modular multilevel converter (VSMMC) ; SPWMLSC ; SPWMPSC ; STHILSC ; STHIPSC ; optimal energy management ; multi-agent system ; multi-energy carrier ; renewable energy sources ; microgrids management ; renewable energy resources ; isolated microgrids ; optimization techniques ; demand-side management (DSM) ; distributed generations (DGs) ; energy management systems (EMS) ; renewable energy sources (RES) ; waste to energy (W2E) ; microgrid architecture ; smart infrastructure ; resilience ; optimization model ; critical node identification ; n/a ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues::TBX History of engineering & technology
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  • 18
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-03-28
    Description: System dynamics is a simulation modeling approach to strategic and policy analysis that has been applied to many health care and public health issues since the 1960s and has become increasingly prevalent since the 2000s. The ten articles in this reprint appeared in a Special Issue of Systems and cover a broad cross-section of relevant methodological topics as well as applications to specific health problems.One methodological article describes the use of cascaded system archetypes, with an application to reducing hospital congestion. Another discusses Monte Carlo uncertainty analysis, with an application to the US opioid crisis. Three of the articles describe models of community response to severe shocks, including recovery from the COVID-19 pandemic. Two other articles address strategies for dealing with myriad chronic diseases and risk factors in a population. Other papers include in-depth analyses of prostate cancer screening, digital prosthetic services for lower-limb amputees, and the complex behavioral health challenge of youth homelessness.This reprint provides an excellent snapshot of the current state of practice in system dynamics as it is applied to public health, health care delivery, and health policy. It offers practical policy guidance and will be of interest to both experienced practitioners and those new to the field.
    Keywords: simulation model ; public health practice ; chronic disease ; prevention ; cardiovascular diseases ; cancer ; COVID-19 ; tourism recovery ; public policy ; system dynamics ; participatory modelling ; health ; social care ; integrated care ; hospital ; delayed hospital discharges ; strategy ; congestion ; capacity ; archetypes ; unintended consequences ; population health and well-being ; equity ; stewardship ; resilience ; simulation modeling ; uncertainty analysis ; optimization ; sensitivity testing ; Monte Carlo randomization ; opioid epidemic ; prosthetics ; major lower-limb amputations ; prosthesis usage ; amputee mobility ; health care system ; health policy ; youth homelessness ; child welfare ; juvenile justice ; mental health ; public health ; decision making ; long-term conditions ; resource allocation ; complex systems ; early detection of cancer ; mass screening ; decision-making ; dissemination ; clinical practice guidelines ; evidence-based guidelines ; policy decision thresholds ; prostate cancer ; natural history of disease ; biomarker ; PSA ; thema EDItEUR::G Reference, Information and Interdisciplinary subjects::GP Research and information: general ; thema EDItEUR::P Mathematics and Science
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-02-02
    Description: The reprint is devoted to the phenomena associated with exact or approximate axial symmetry in different areas of technical physics and mechanical engineering science. How can the symmetry of the problem be used most efficiently for its analysis? Why is the symmetry broken or why is it still approximately retained? These and other questions are discussed based on systems from different fields of engineering.
    Keywords: fretting wear ; axis-symmetry ; tangential contact ; torsional contact ; Abel transform ; injection molding ; concentricity ; coaxiality ; optical barrel ; bilateral telecentric lens ; optimization ; contact problem ; non-axisymmetric indenter ; extremal principle ; generalized MDR ; non-axisymmetric ; circular contact ; frictionless contact ; general solution ; closed-form solution ; series solution ; cylindrical punch ; contact stress-intensity factor ; cylindrical symmetry ; spherical symmetry ; periodic boundary conditions ; n/a ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues::TBX History of engineering & technology
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  • 20
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-06-23
    Description: The great economic and strategic importance of catalysis makes it a rapidly evolving field. Catalysis is fundamental in areas such as sustainable development, energy production, environmental protection, food production, and water purification. In the face of the significant challenges of the present day, acquiring fundamental knowledge about the structure and phenomena on the surface of catalysts and the relationships between the composition, synthesis method, properties, and performance of catalysts in industrial processes is essential. Research is still needed to improve existing catalysts or design new systems which may efficiently and selectively conduct a given reaction toward the desired product. This Special Issue was devoted to designing and characterizing heterogeneous catalytic systems for industrial chemical processes. The reprint collects 10 research articles providing insight into important aspects of modern catalyst design. The papers cover recent advances and comprehensive experimental studies of synthesis, characterization, and evaluation of catalyst performance in the following processes: ammonia synthesis, selective catalytic reduction of nitrogen oxides, hydrogen production from ethanol, and photocatalysis.
    Keywords: cobalt molybdenum nitrides ; ammonia synthesis ; phase composition ; specific surface area ; cobalt catalyst ; barium ; promoter ; optimization ; hydrogen ; ethanol ; catalyst ; TiO2 photocatalysis ; UV-C ; photolysis ; ammonia ; nitrogen removal ; water treatment ; hydrogen production ; ethanol steam reforming ; nickel-based catalyst ; manganese oxides ; potassium promoter ; gliding discharge ; plasma–catalytic system ; tar decomposition ; nickel catalyst ; nitric acid plant ; selective catalytic reduction ; clinoptilolite ; iron-modified zeolite catalyst ; TiO2-SiO2 ; mesoporous ; F127 ; high surface area ; solar photocatalysis ; dye degradation ; structure sensitivity ; size effect ; carbon support ; neodymium oxide ; support ; hydrogen poisoning ; n/a ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues
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  • 21
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-04-05
    Description: The second volume of the Special Issue on “Micro-Electro Discharge Machining: Principles, Recent Advancements and Applications” confirms the growing interest in the micro-EDM technology as a suitable and efficient technology for machining novel, multilateral components, with demanding requirements in terms of precision, accuracy, and productivity.This volume consists of 10 original research papers which involve several approaches to micro-EDM and cover the enhancement of the process performance, such as the material removal rate, surface roughness, or machining accuracy, using advanced optimization methods. Some studies also consider several dielectric fluid additives and investigate the processability of new materials. Others investigate the combination of Reverse-micro-EDM with laser beam micromachining or explore new applications for the micro-EDM for fabricating antimicrobial nanosilver colloid.
    Keywords: electrical discharge machining ; metal matrix composite ; Taguchi ; micro-hardness ; surface roughness ; material removal rate ; wire electro-discharge machining ; polymer composite materials ; processing precision ; interelectrode gap ; micro-EDM milling ; accumulative difference ; material removal ; tool electrode wear ; analytical hierarchy process ; residual stress ; metal erosion rate ; Reverse-μEDM ; Nd: YAG LBµM ; micro-holes ; burrs ; protrusions ; electrical discharge machine ; energy consumption ; nanosilver colloid ; antimicrobial ; micro-EDM ; tungsten carbide ; carbon nanofiber ; silicon ; alumina ; shape memory alloys ; nitinol ; optimization ; near-dry wire electric discharge machining (WEDM) ; teaching–learning based optimization (TLBO) algorithm ; micro electrical discharge machining ; vibration assisted electrical discharge machining (EDM) ; high-speed camera ; array electrode ; structured surface ; efficiency ; micromachining ; performance ; quality ; n/a ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues::TBX History of engineering & technology
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  • 22
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-03-07
    Description: This reprint, entitled “Process Control and Smart Manufacturing for Industry 4.0”, contains the extended papers from the Series of annual IFSA conferences on Automation, Robotics and Communications for Industry 4.0/5.0 (ARCI) on the following topics: Process Automation, Process Control and Monitoring, Design Principles in Industry 4.0, Smart Manufacturing and Technologies, Smart Factories, Machine Learning and Artificial Intelligence in Manufacturing. The reprint contains 13 chapters written by 54 ARCI conference participants from seven countries: China, Croatia, Denmark, Germany, Italy, Poland and Romania. This reprint will inform readers of cutting-edge developments in the field and provide effective starting points and a road map for further research and development. All chapters follow the same structure: firstly, an introduction to the specific topic under study; secondly, a description of the field, including sensing or/and measuring applications. Each chapter ends with a curated list of references, including books, journals, conference proceedings and websites. “Process Control and Smart Manufacturing for Industry 4.0” is intended for researchers and scientists from academia and industry, as well as for postgraduate students.
    Keywords: steel alloys ; resistance spot welding ; RSW ; electrode wear ; electrode tip-dressing ; process monitoring ; mushrooming ; plateau forming ; quality control ; COVID-19 ; FDM ; 3D printing ; injection molding ; personal protection ; rapid prototyping ; protective face shields ; mechatronics line ; visual servoing system ; wheeled mobile robot ; industrial robotic manipulator ; Industry 4.0 ; NDT ; magnetic particle inspection ; optimization ; condition monitoring ; vibration ; acoustic emission ; drive train ; data fusion ; machine learning ; product morphology ; core data model ; phase rule filter ; phase private data model ; storage system ; forklift AGV ; deep learning ; semantic segmentation ; H-Swish ; community transformation ; community innovation governance ; ternary space ; coupling and coordination analysis ; lean manufacturing ; lean principles ; pull principle ; production control mechanisms ; production processes ; lean implementation ; batch process ; partial least squares ; multi-phase ; multi-mode ; master production scheduling ; make-to-order ; mathematical programming ; agent-based ; overtime ; earliness ; tardiness ; equipment selection decision ; business compass ; energy consumption ; processing time ; beetle antennae search algorithm ; sustainable blank dimension design ; energy-saving ; low-carbon ; grey wolf algorithm ; gas–solid ; cyclone ; separator ; gas dynamics ; erosion ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::P Mathematics & science::PN Chemistry
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  • 23
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-11
    Description: This reprint contains fourteen chosen articles on robust design optimization of electrical machines and devices. Optimization is essential for the research and design of electromechanical devices, especially electrical machines. Finding optimal solutions may lead to cheaper and more efficient production of electrical machines. However, optimizing such a complex system as an electrical machine is a computationally expensive optimization problem, where many physical domains should be considered together. However, a good, practical design should be insensitive to parameter changes and the manufacturing tolerances. The collected papers show how modern artificial intelligence (AI) tools can be used for the robust design optimization of electric machines and electrical devices. The articles which are published in this Special Issue present the latest results of current research fields. Hopefully, the presented models and various application fields will provide useful information for researchers and professionals interested in these techniques themselves or who have other problems from different fields.
    Keywords: design optimization ; genetic algorithms ; Taguchi designs ; electromagnetic coupling ; additive manufacturing ; dynamic performance ; equivalent circuit model ; finite-element method ; linear induction motor ; longitudinal end effect ; transverse edge effect ; DLIM ; equivalent circuit ; end effect ; thrust ; finite element ; insulation core transformer ; non-uniformity of disk output voltage ; load regulation ; voltage compensation ; dummy primary winding ; PSO algorithm ; PMSM ; analytical method ; perturbation theory ; torque ; torque ripple ; rotor eccentricity ; optimization ; electrical machines ; finite element method ; nuclear power plant ; thermal degradation ; thermal-mechanical aging ; low-voltage cables ; polymer degradation ; dielectric spectroscopy ; hardness ; hairpin windings ; multi-objective optimizations ; Finite Element Method ; Lumped Parameter Model ; Permanent Magnet Synchronous Reluctance Motor ; rotor flux barrier ; torque development ; Aurivillius phases ; Bi3−xNdxTi1.5W0.5O9 ; activation energy Ea ; Curie temperature TC ; artificial intelligence ; optimization techniques ; self-organizing map ; power quality ; wind generation ; upgraded insulant ; ester oil-based nano fluids ; thermal conductivity ; relative viscosity ; nanoparticles effect ; alternative fluid ; temperature change ; model predictive control ; hysteresis current control ; execution time ; synchronous reluctance motors ; antenna array ; synthesis control ; quantized control ; array factor ; n/a ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology ; thema EDItEUR::K Economics, Finance, Business and Management::KN Industry and industrial studies::KNB Energy industries and utilities
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  • 24
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-11
    Description: This reprint aims to disseminate the latest research achievements, findings, and ideas in the robotics field, with particular focus on the Italian scenario. It covers a range of topics related to the theory, design, practice, and applications of robots, such as robot design and kinematics, dynamics of robots and multi-body systems, linkages and manipulators, control of robotic systems, trajectory planning and optimization, innovative robots and applications, industrial robotics, collaborative robotics, medical robotics, assistive robotics, and service robotics. The reprints contributions include (but are not limited to) revised and substantially extended versions of selected papers that were presented at the 2nd International Conference of IFToMM, Italy (IFIT 2018).
    Keywords: robotics ; humanoids ; foot mechanism ; prosthetics ; neurorehabilitation ; humanoid robotics ; assistive robotics ; service robotics ; mechanism design ; kinematics ; cable-driven robots ; compliant mechanisms ; underactuated mechanisms ; motion analysis ; workspace ; deburring ; robot ; cutting forces ; compliant mechanism ; manipulator design ; robot kinematics ; synthesis of kinematic structure ; loop chain ; virtual link ; instant center ; multi-degree-of-freedom ; Aronhold–Kennedy theorem ; rescue robotics ; search and rescue ; robot design ; mobile robot ; patient transfer ; casualty extraction ; planar CDPR ; prescribed task ; optimization problem ; multiobjective formulation ; mono-objective formulation ; position control approach ; validated experimentally ; wheelchair upper limb exoskeleton robot ; ADL assistance ; PD control ; dynamic modeling of an upper limb exoskeleton ; trajectory tracking ; wearable exoskeleton ; reconfigurable parallel mechanism (RPM) ; degree-of-freedom (DOF) ; circular guide ; computer-aided design (CAD) modeling ; virtual and physical prototyping ; screw theory ; kinetostatic analysis ; digital twins ; 3D printing technology ; parallel mechanism ; RoboMech ; structural-parametric synthesis ; Chebyshev and least-square approximations ; kinematic analysis ; robotic rehabilitation ; brachial monoparesis ; torque monitoring ; human–robot interaction ; HRI (human–robot interaction) ; Leap Motion ; UR5 ; hand gesture recognition ; pointing gestures ; collaborative robotics ; parallel robot ; non-uniform covering ; optimization ; singularity zones ; link interference ; n/a ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-01-05
    Description: The objective of this book is to publish the most recent technological advancements, and theoretical and practical research outcomes, alongside high-quality literature reviews on wireless power transfer to charge electric vehicles. More substantial research is proposed due to the fast-growing market for electric vehicles, and recent advances in wireless power transfer techniques have the potential to make this technology available for all consumers by overcoming its drawbacks. For instance, one of the major downsides to EVs is the requirement for an automobile to be idle during charging times. This problem can be solved by implementing dynamic wireless power transfer (WPT) with a higher power transfer efficiency (PTE). So, this book endeavors to create a major forum for investigating recent advances and the envisioned future in wireless power transfer for electric vehicles in terms of modeling, design, performance, operation, control, implementation, storage, electric machines, power electronics converters, optimization, cost, charging techniques, and applications. This book provides valuable contributions to the field of electric vehicles: inductive power transfer concepts; airport inductive charging infrastructures; the design of a wireless charging system for an e-bike with grid connection; control of renewables; social, economic, political, and technical factors for dynamic wireless charging; the influence of posture and coil position on the safety of a WPT; double-coil dynamic shielding technology for WPT; reduction in cogging torque in a PM brushless DC motor; and optimal dynamic scheduling of EVs in a parking lot.
    Keywords: charging cost ; dynamic charging ; economics ; electric vehicles ; optimization ; parking lots ; static charging ; PMBLDC motor ; cogging torque ; finite element analysis ; virtual work method ; shifting angle ; electromagnetic field ; wireless power transfer ; shielding ; electric vehicle ; EMF safety ; numerical dosimetry ; wireless charging ; dynamic wireless power transfer ; EV charging infrastructure ; stakeholder engagement ; electric road systems ; system demand ; APF ; power quality ; SRF ; UPC ; VAR ; brushless doubly fed reluctance generator (BDFRG) ; crowbar ; symmetrical fault ; unsymmetrical fault ; wind turbine (WT) ; inductive power transfer ; e-bikes ; forward converter ; dynamic wireless charging ; airport apron ; airport infrastructure planning ; electric busses ; charging automation ; electric vehicles (EVs) ; wireless power transfer (WPT) ; production ; automation ; inductive power transfer (IPT) ; manufacturing ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues::TBX History of engineering & technology
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-03-28
    Description: This reprint is a comprehensive compilation of research on new urban mobility. It contains proprietary, current studies on shared mobility, such as car sharing or scooter sharing in relation to commercial use as part of short-term rental systems or for use by postal services. In addition, it broadly refers to the subject of bicycles and bike-sharing systems. It includes research on professional e-bikes with parameters such as velocity, cadence and power data as well as research on measuring the intensity of bicycle traffic, which can be used to evaluate and improve bike-sharing systems. The reprint provides a valuable resource for researchers, practitioners, and policymakers who are interested in the challenges and opportunities associated with the development of new mobility solutions.
    Keywords: power ; velocity ; cadence ; electric bike ; bicycle computer ; car-sharing ; carsharing ; shared mobility ; multi-criteria decision analysis ; ELECTRE III ; MCDA ; decision making in transport ; transportation engineering ; hydrogen mobility ; zero emission ; green energy ; e-micromobility ; e-scooters ; electric vehicles ; PROSA GDSS ; multi-criteria decision aid ; MCDM ; compromise solution ; micro-mobility ; e-scooter ; postal service ; Poisson regression ; optimization ; energy ; cost ; environment ; bicycle traffic measurement ; vehicle counter ; induction loop ; video recording ; perpendicular radar ; microwave radar ; energy management ; thema EDItEUR::G Reference, Information and Interdisciplinary subjects::GP Research and information: general ; thema EDItEUR::P Mathematics and Science::PH Physics
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  • 27
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-11
    Description: The recovery of solid waste is a challenge and an opportunity for companies, thanks to the ongoing awareness of sustainability and technological advances. The end-of-waste criteria constitute a European strategic goal that promotes recycling in order to ensure a high level of environmental protection by means of reducing the quantity of waste destined for disposal. This Special Issue promotes the knowledge regarding technological methods for solid waste recovery. Articles investigate innovative processing methods with the goal of valorizing solid waste from different civil and industrial activities. Topics includes studies on construction and building, mining, plastics, and WEEE, referring to the treatment techniques used and, where appropriate, the critical raw materials that can be valorized. The recovery processes of critical raw materials can be very energy-intensive, affecting environmental and soil factors. Case studies on sustainable, low-carbon and resource-efficient techniques for the purpose of a more competitive economy were also very welcomed. The environmental impact and safety measures, especially for dangerous waste, should be taken into account in the description of their processing and management.
    Keywords: cathode ray tube ; lead recovery ; lead leaching and electrodeposition ; environmental assessment ; phosphate cements ; calcined dolomite ; quartz sand ; calcined magnesite ; temperature ; K-struvite ; industrial waste ; chromium ; high-performance concrete ; ultra-high-performance concrete ; fibers ; mechanical strength ; alkali-activated cement ; geopolymers ; building materials ; PET ; compressive strength ; water absorption ; WPCBs dismantling ; metals dissolution ; copper recovery ; economic assessment ; process modeling and simulation ; low-temperature processing ; WEEE (waste of electric and electronic equipment) recycling ; materials separation ; process characterization ; SEM/EDS ; torrefaction ; solid fuel ; waste to carbon ; circular economy ; biodegradable materials ; calorific value ; methane fermentation ; biogas ; biomethane ; biochar ; pyrolysis ; hydrothermal carbonization ; biochemical methane potential ; biogas production kinetics ; industrial wastes ; arc furnace slag ; ceramic sludge ; β-wollastonite ; parawollastonite ; porous ceramics ; waste management ; sustainability development ; apple pomace ; active compounds ; extraction ; renewable energy ; anticorrosion agents ; biopolymers ; PCB ; recycling ; metal recovery ; mechanical pre-treatment ; production waste ; rock wool ; glass wool ; loss on ignition ; pollutants washout ; geopolymer ; waste slurry ; flocculation ; solidification ; pipe jacking ; air flow rate ; composting ; municipal solid waste ; monitoring ; optimization ; spatial distributions ; crystallization ; glass–ceramics ; diopside ; anorthite ; by-pass cement ; aluminum dross ; thermodynamic analysis ; kinetics ; hemp stalk ; bio-insulating material ; sustainability ; sound absorbing properties ; thermal absorption properties ; green composite material ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TQ Environmental science, engineering and technology
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-04-05
    Description: This book reprints articles from the Special Issue "Advances in Computer-Aided Technology" published online in the open-access journal Machines (ISSN 2075-1702). This book consists of thirteen published articles. This Special Issue belongs to the "Mechatronic and Intelligent Machines" section. Industry 4.0 is characterized by the integration of advanced technologies, such as artificial intelligence, the Internet of Things, and cloud computing, into traditional manufacturing and production processes. CAx (Computer-Aided Systems) systems are a set of computer software tools used in engineering and product design, covering various stages of the product development cycle. Advanced CAx tools combine many different aspects of product lifecycle management (PLM), including design, finite element analysis (FEA), manufacturing, production planning and product. In connection with the transition to Industry 4.0 concepts, the concept of the digital twin comes to the fore, and existing CAx systems must adapt to this trend. The Special Issue deals with a number of research areas, such as: - New trends in CAx systems; Digital manufacturing; Internet of Things in manufacturing; Simulation of production systems and processes; Systems for advanced finite element analysis; Material engineering; Digitization and 3D scanning.
    Keywords: tensor glyph ; golden section ; vector space ; sandwich ; springback ; Vegter yield criterion ; numerical simulation ; PAM-STAMP 2G ; isotropic hardening law ; kinematic hardening law ; bending ; Bauschinger effect ; machine learning ; artificial neural network ; additive manufacturing ; high precision metrology ; CAD ; predictive model ; ship hull structure ; computer-aided design of structure ; database ; function soft block ; gun drill tool ; deep-drilling technology ; optimization ; tool life ; angle ; digital implant impression ; interimplant distance ; intraoral scanner ; trueness ; sewing machine ; needle bar ; floating needle ; electromagnet ; electromagnetic simulation ; noise reduction ; cycloidal gearbox ; friction ; actuator ; servomotor ; permanent magnet synchronous machine ; fixture design ; machining ; sustainable manufacturing ; process innovation ; complex-shape part ; signal processing ; monitoring system ; laser profiler ; surface roughness ; quality assessment ; non-contact method ; vision-based method ; frequency analysis ; abrasive water jet ; wood plastic composite ; natural reinforcement ; knitting machine ; stroke ; drive ; simulation ; cylinder ; dynamic modeling ; load spectrum reconstruction ; fatigue test ; hydraulic excavator ; n/a ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues::TBX History of engineering & technology
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-03-28
    Description: This reprint covers the following topics in the field of smart grids: 1. Optimal dg location and sizing to minimize losses and improve the voltage profile using garra rufa optimization. 2. Solar and wind energy forecasting for the green and intelligent migration of traditional energy sources. 3. Optimized micro-grid’s operation with electrical-vehicle-based hybridized sustainable algorithm. 4. The detection of nontechnical losses in smart meters using a MLP-GRU deep model and augmenting data via theft attacks. 5. A hybrid deep-learning-based model for the detection of electricity losses using big data in power systems. 6. Load frequency control and automatic voltage regulation in a multi-area interconnected power system using nature-inspired computation-based control methodology. 7. Line overload alleviations in wind energy integrated power systems using automatic generation control. 8. Electric price and load forecasting using a CNN-based ensembler in a smart grid. 9. Day-ahead energy forecasting in a smart grid considering the demand response and microgrids. 10. A dragonfly optimization algorithm for extracting the maximum power of grid-interfaced pv systems. 11. An economic load dispatch problem with multiple fuels and valve point effects using a hybrid genetic–artificial fish swarm algorithm. 12. Incentive-based dynamic pricing in a smart grid.
    Keywords: demand side management ; demand response ; load scheduling ; real time pricing ; genetic algorithm ; dynamic incentives ; artificial fish swarm algorithm ; economic load dispatch ; hybrid genetic–artificial fish swarm algorithm ; multi-objective optimization ; sustainable power generating system ; photovoltaic (PV) ; partial shading ; maximum power point tracking (MPPT) ; dragonfly optimization algorithm (DOA) ; adaptive cuckoo search optimization (ACSO) ; fruit fly optimization algorithm combined with general regression neural network (FFO-GRNN) ; improved particle swarm optimization (IPSO) ; voltage source inverter (VSI) ; total harmonic distortion (THD) ; energy optimization ; day ahead energy prediction ; artificial neural network ; renewable energy sources ; microgrid ; smart grid ; electricity price forecasting ; energy management ; electricity load forecasting ; convolutional neural network ; corona virus herd immunity optimization ; sustainable cities ; requirement-gathering tool ; qualitative comparison ; requirement engineering ; software engineering ; requirement-management tools ; automatic generation control ; wind energy ; transmission line security ; dispatch strategies ; Pakistan power system ; PI-PD controller ; load frequency control ; automatic voltage regulator ; nature-inspired optimization ; multi-area interconnected power system ; class imbalance ; gated recurrent units ; electricity theft detection ; non-technical losses ; smart grids ; deep learning ; GRU ; healthcare ; MLP ; PRECON ; smart cities ; smart meters ; sustainable society ; electric vehicles ; flexible load ; optimization ; renewable energy ; forecasting ; machine learning ; energy efficiency ; sustainability ; low carbon emission ; distribution generation ; Garra Rufa ptimization ; PSO ; GA ; power system ; urban sustainability ; local growth ; regional cities ; cultural heritage ; real estate ; intelligent regions ; innovation systems ; circular economy ; regional policies ; thema EDItEUR::G Reference, Information and Interdisciplinary subjects::GP Research and information: general ; thema EDItEUR::P Mathematics and Science::PH Physics
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-03-28
    Description: Catalytic oxidation or reduction processes are among the most efficient processes for water and wastewater treatment. These include photocatalysis, sulfate and hydroxyl-radical-based advanced oxidation processes.This Special Issue contains the contributions of different research groups and discusses the recent progress and advances in catalytic processes in water and wastewater treatment.
    Keywords: photocatalytic degradation ; graphene quantum dots ; nanocomposites ; free radical generation ; post-processing modification ; surface-engineered biochar ; dye removal ; machine learning ; artificial neural network ; photocatalysis ; sodium persulfate ; antibiotics ; water treatment ; hybrid system ; water matrix ; MTBE ; arsenic ; Fe2O3/MgO catalyst ; AOP ; modeling ; optimization ; Auramine O ; basic dye ; titania nanoparticle ; mechanism ; CuS nanostructures ; heterojunctions ; organic pollutants ; wastewater treatment ; water purification ; ZnO nanostructures ; hydrothermal synthesis ; seedless ; building materials ; synthetic dyes ; anionic–anionic co-doping ; BaTiO3 ; Heyd–Scuseria–Ernzerhof (HSE06) ; photocatalytic water splitting ; TiO2 ; photocatalysts ; photodegradation ; methylene blue ; methyl green ; g-C3N4 ; pharmaceuticals ; amisulpride ; reactive species ; transformation products ; ecotoxicity ; biochar ; sulfamethoxazole ; persulfate ; electron transfer ; psychiatric drugs ; hospital wastewaters ; solar photocatalysis ; 1MoS2/g-C3N4 ; CNTs ; Ag2S ; cadmium ; adsorption ; alizarin yellow R ; n/a ; thema EDItEUR::G Reference, Information and Interdisciplinary subjects::GP Research and information: general ; thema EDItEUR::P Mathematics and Science::PN Chemistry
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-03-30
    Description: The delicate balance of resource intensity and efficiency of a solution for a very complex problem raises the issue of how these aspects constitute a symmetrical or asymmetrical system. Computational Intelligence (CI) offers a plethora of efficient tools for the potential and rather good quality solution of highly complex, often mathematically intractable problems. This "toolbox" is one of the best examples for the study of the above mentioned issue, namely, how to find the best balance, how to establish a symmetry of weights or costs in a particular field, for a particular problem. This special issue presents a number of interesting novel applications of CI for the tackling of a wide variety of difficult problems. The Introduction gives a short insight into the symmetry and asymmetry aspect of the topic.
    Keywords: lung nodule segmentation ; 3D-UNet ; 3D-Res2UNet ; multi-scale features ; deep learning ; butterfly optimization algorithm (BOA) ; particle swarm optimization (PSO) ; cubic map ; nonlinear ; high dimension ; extensional fuzzy numbers ; MI-algebras ; similarity ; arithmetics of fuzzy numbers ; orderings ; fuzzy interpolation ; economic data ; air defense system ; artificial immune system ; command and control ; learning classifier system ; multi-agent systems ; weapon-target assignment ; energy optimization ; genetic algorithms ; multi-objective optimization ; artificial neural network simulator ; artificial intelligence ; artificial bee colony algorithm ; global optimization ; neural network ; nonlinear static system ; behavioural finance ; imprecision ; oriented fuzzy number ; oriented present value ; oriented return ; S-divergence ; S-distance ; spectral clustering ; text summarization ; recurrent neural network ; embedding ; dynamic memory network ; fuzzy-rough cognitive network ; fuzzy cognitive map ; granular computing ; fuzzy-rough sets ; stability ; convergence ; discrete bacterial memetic evolutionary algorithm ; simulated annealing ; flow shop scheduling problem ; global sensitivity analysis ; Sobol procedure ; fast algorithm ; convolutional neural network ; structure reduction ; pruning ; quality ; feature selection ; machine learning ; asexual ; genetic algorithm ; android malicious application detection ; bees algorithm ; training deep neural networks ; metaheuristics ; opinion mining ; recurrent neural networks ; sentiment classification ; natural language processing ; data augmentation ; fine-tuning ; generative models ; StyleGAN ; transfer learning ; present value ; discount factor ; portfolio ; finance ; optimization ; tourist trip design ; vehicle routing ; key performance indicator (KPI) ; anomaly detection ; variational auto-encoder (VAE) ; support vector data description (SVDD) ; FMEA ; Fuzzy Logic ; greenhouse gases ; blockchain ; difficulty adjustment ; proof-of-work ; ANN ; AlexNet ; COVID-19 ; TSA ; commonsense ; knowledge graph ; linguistic terms ; language models ; n/a ; thema EDItEUR::K Economics, Finance, Business and Management::KN Industry and industrial studies::KNT Media, entertainment, information and communication industries::KNTX Information technology industries ; thema EDItEUR::U Computing and Information Technology::UY Computer science
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-06-23
    Description: The human body poses various biological barriers to protect itself from pathogens, foreign materials and is important for its functioning and development. This reprint serves as a collection of research and review articles describing novel approaches and new therapeutic modalities to overcome biological barriers. This collection is a must read for scientists working in the field of drug and vaccine delivery.
    Keywords: blood-brain barrier ; integrity marker ; sorbitol ; positron emission tomography ; focused ultrasound ; zolmitriptan ; intranasal ; bilosomes ; sodium deoxycholate ; mucoadhesive gel ; brain targeting ; blood–brain barrier ; drug formulation ; drug hybrids ; intra-arterial delivery ; intracranial malignancies ; intranasal delivery ; monoterpene ; monoterpenoid ; NEO100 ; carbomer hydrogel ; whitening agents ; enhancers ; enhancement site and mechanism ; drug release and permeation ; inhaled drug delivery ; prodrug ; liposome formulation ; propofol ; micelle ; DSPE mPEG2k ; Solutol HS 15 ; diclofenac ; optimization ; pharmacokinetic ; pharmacodynamic study ; long acting ; sustained delivery ; biologics ; silica microparticles ; exosome ; brain delivery ; BBB crossing ; transcytosis ; peptide-drug conjugates ; blood–placental barrier ; Zika virus ; BBB shuttles ; porphyrins ; antivirals ; epidermal growth factor receptor ; non-small cell lung cancer ; Lamin B2 ; AMPK ; Osimertinib ; RNA seq ; proteomics ; RT-PCR ; blood–brain tumor barrier ; permeabilization ; brain tumors ; primary central nervous system lymphoma ; tumor necrosis factor-alpha ; targeted delivery ; vascular targeting ; CD13 ; TNF ; TNF receptors ; NGR-TNF ; polyamidoamine dendrimers ; diabetic retinopathy ; protein kinase C-β inhibitor ; nanoparticles ; ruboxistaurin ; blood brain barrier ; electropermanent magnet ; magnetic resonance imaging ; n/a ; bic Book Industry Communication::M Medicine ; bic Book Industry Communication::K Economics, finance, business & management::KN Industry & industrial studies::KND Manufacturing industries::KNDP Pharmaceutical industries
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-09-11
    Description: In the context of the food industry, "Innovative Food Products and Processing" refers to the creation and application of cutting-edge techniques, technologies, and approaches. This vibrant industry covers a broad range of topics, with the aim of enhancing food quality, safety, sustainability, and the consumer experience. This Special Issue, entitled “Innovative Food Products and Processing” provides readers with a wide range of topics and applications in food science and technology, such as the use of food chemistry, biochemistry, fermentation, and microbiology, as well as new contemporary processing and preservation technologies and techniques for effective waste management and green technology for the food processing industry. “Innovative Food Products and Processing” is an excellent resource for food science researchers, food scientists, biochemists, nutritionists, and students. This publication's wide range of topics provides a complete overview of the most recent breakthroughs, cutting-edge technologies, and emerging trends in the food industry.
    Keywords: bambangan ; extraction solvents ; fatty acid ; triacylglycerol ; crystalline microstructure ; Bario ; rice flour ; gluten-free ; bread ; amylose content ; encapsulation ; non-dairy ; probiotics ; stability ; storage ; Auricularia cornea ; wood ear mushroom ; instant noodles ; glycaemic response ; by-product ; needlefish (Tylosurus acus melanotus) ; acid-soluble collagen extraction ; physicochemical ; characterization ; chlorophylls ; green colour ; antioxidant activity ; amaranth ; metal ions ; optimization ; response surface methodology ; lactobacillus ; bifidobacterium ; Eucheuma denticulatum ; seaweed oligosaccharide ; HMF ; chokeberry ; wort ; mint essential oil ; malt ; polyphenols ; anthocyanins ; antioxidant capacity ; green banana flour ; soy protein isolate ; emulsifier ; cake ; resistant starch ; dietary fiber ; esters ; brandy ; HS-SPME/GC-MS ; cold stabilization ; multivariate statistics ; egg white ; pulses ; foaming agent ; aerated foods ; canned liquid ; seaweed ; reduced salt ; meat emulsion ; physicochemical properties ; sensory ; meat products ; patty ; microencapsulation ; nanoemulsion ; trans-cinnamaldehyde ; spray-drying ; freeze-drying ; n/a ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::P Mathematics & science::PN Chemistry ; bic Book Industry Communication::P Mathematics & science::PN Chemistry::PNF Analytical chemistry
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-03-28
    Description: The use of composite materials is ubiquitous in every field of human activities, including in the agricultural, industrial, environmental, biomedical and transport sectors. After a pandemic with the simultaneous unfolding of an energy and climatic crisis, we now realize how necessary it is to carry out studies on composite materials based on polymers to positively affect our current society and, in particular, future generations.To this aim, in the present selection of scientific articles we have given visibility to worthy contributions on a wide variety of topics, highlighting how essential plastic-based composite materials and their derivatives are in our daily lives. The articles in this Special Issue were wide-ranging and devoted to the properties and characterization of composites for innovative and strategic applications and, more generally, for the development of the chemical–physical properties of these materials.
    Keywords: recycled borosilicate ; PTFE ; sintering ; permittivity ; high-frequency ; substrates ; carbon fibers ; polymer-matrix composites (PMCs) ; thermoplastic resin ; surface treatment ; ethylene vinyl acetate copolymer ; EVA nanocomposite ; Layered Double Hydroxide (LDH) ; photo-oxidation ; degradation ; gas permeation ; ball milling ; doping ; carbon nanotubes ; functionalization ; optical characterization ; DFT ; solar cells ; bulk fill ; composite resin ; restorative materials ; surface characterization ; energy-dispersive X-ray spectroscopy ; scanning electron microscopy ; microbial adherence ; bioreactor ; bacterial biofilm ; Streptococcus mutans ; composite polymer materials ; hollow profile ; 3D printing ; fused deposition modeling ; FEM analysis ; SEM analysis ; flax/PLA ; polymer-matrix composites ; hybrid ; particle-reinforcement ; mechanical properties ; electron microscopy ; surface treatments ; cotton fabric ; TiO2 nanoparticles ; citric acid ; Quat 188 ; curcumin ; antibacterial ; UV blocking ; durability ; carbon-fiber composite ; 3D reinforced composite ; digital image correlation ; destruction ; cold climate ; epoxy binder ; basalt fiber ; BFRP ; rebar ; moisture uptake ; diffusion coefficient ; Fick’s diffusion ; PCM ; acrylic resin ; candidiasis ; nanodiamonds ; surface properties ; polymerization ; PLA ; HDPE ; biocomposites ; mold ; bark ; resins ; carbon fiber cloth ; sandwich structure ; graphene ; absorbing performance ; mechanical property ; polymeric composites ; composite technology ; vacuum infusion ; process modeling and optimization ; multi-criteria decision ; Pareto frontier ; dental prosthesis biopolymer ; hardness ; tensile bond strength ; thermoplastic composites ; reactive injection pultrusion ; impregnation ; numerical simulation ; void content ; hygrothermal aging ; micromechanics ; failure mechanism ; metal/composite ; L-joint ; bonding length ; failure mode ; equivalent ; RVE ; filament winding ; winding trajectory ; composite casing ; polymer composite ; nitrile butadiene rubber ; phenolic resin ; rheology ; nanoparticles ; organoclay ; thermal stability ; marine biomaterials ; marine origin biopolymers ; factorial design ; optimization ; cryo-environment ; cartilage tissue ; triaxial geogrid ; stretching process ; composite manufacturing ; thermosetting polymers ; cure behaviour ; process monitoring ; in situ cure monitoring ; sensors ; squeezing mechanical analysis ; rubber strip cold-feed process ; viscoelastic rubber strip ; embolic agent ; hemodynamics ; arteriovenous malformation (AVM) ; CFD ; rotomolding ; microwave heating ; microwave-active materials ; polyethylene processing ; thema EDItEUR::G Reference, Information and Interdisciplinary subjects::GP Research and information: general ; thema EDItEUR::P Mathematics and Science::PH Physics
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-03-28
    Description: This reprint titled “Analysis of Natural Bioactive Compounds in Plant, Food, and Pharmaceutical Products Using Chromatographic Techniques” deals with the separation and analysis of natural bioactive compounds in plants, foods, and pharmaceutical products. A growing tendency toward the discovery and use of natural bioactive compounds that are least harmful, have the fewest side effects, and fit the human body the most naturally has been noticed during the past few decades. As evidenced by the rise in recent studies on the therapeutic properties of plants, this trend has caused a return of healthcare professionals to nature and plants, but with a modern approach that specifically questions how plants help to heal humans and what their exact effects on the human body are. In order to identify and analyze natural bioactive compounds in plant, food, and pharmaceutical products, this reprint attempted to compile latest improvements, advancements, and analytical innovations in chromatographic techniques. In the last few decades, tremendous research on the analysis of natural bioactive compounds in plants, foods, and pharmaceutical products using wide range of chromatography techniques have been performed. This reprint has brought together prominent researchers who have explored a diverse applications range of chromatographic techniques in the extraction, separation, identification, and analysis of natural bioactive compounds.
    Keywords: C. indica ; propolis ; GC-MS ; antibacterial ; bioactive compounds ; chemical composition ; AGREE ; Curcuma longa ; curcumin ; nanoemulsion ; greener HPLC ; validation ; lavender oil ; cytotoxic ; scolicidal ; Musca domestica ; acaricide ; capillary electrophoresis ; fluorescence detection ; honey ; sugars ; breast cancer ; liquid chromatography ; bioanalytical methods ; neratinib ; naringenin ; dosage form ; HPLC ; pterostilbene ; solubility ; stability ; lamb meat ; heterocyclic aromatic amines ; roasted ; spices ; olive leaves ; extraction ; optimization ; ultrasound ; polyphenols ; flavonoids ; antioxidant ; Haberlea rhodopensis ; myconoside ; hispidulin 8-C-(6-O-acetyl-2″-O-syringoyl-β-glucopyranoside) ; GLUT1 transporter ; estrogen receptor and MYST acetyltransferase ; Gymnosperma glutinosum ; cosmetology ; skin care ; antioxidants ; bisabolol ; n/a ; thema EDItEUR::G Reference, Information and Interdisciplinary subjects::GP Research and information: general ; thema EDItEUR::P Mathematics and Science::PN Chemistry ; thema EDItEUR::P Mathematics and Science::PN Chemistry::PNF Analytical chemistry
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-03-07
    Description: Transportation, logistics, and supply chain systems and networks constitute one of the pillars of modern economies and societies. From sustainable traffic management in smart cities or air transportation to green and socially responsible logistics practices, many enterprises and governments around the world have to make decisions that affect the efficiency of these complex systems. Typically, optimization algorithms are employed to deal with these challenges, and simulation approaches are utilized when considering scenarios under uncertainty. However, better results might be achieved by hybridizing both optimization algorithms with simulation techniques to deal with real-life transportation, logistics, and SCM challenges, which often are large-scale and NP-hard problems under uncertainty conditions. Hence, simheuristic algorithms (combining metaheuristics with simulation) as well as other simulation optimization approaches constitute an effective way to support decision makers in such complex scenarios. This reprint presents a collection of selected articles on simulation optimization in transportation, logistics, and supply chain management. The reprint is strongly connected to the topics covered in the Winter Simulation Conference (WSC) track on logistics, transportation, and SCM, which includes a stream in simheuristic algorithms as well.
    Keywords: omnichannel retail stores ; vehicle routing problem ; pick-up and delivery ; biased-randomized heuristics ; simheuristics ; scheduling ; uncertainty ; discrete event simulation ; hybrid flow shop ; scrap ; local search ; tabu search ; machine qualifications ; clustering ; shortest processing time ; maritime transportation ; liner network design ; synchronization ; weather uncertainty ; optimization simulation ; discrete-event simulation ; simulation-based optimization ; assignment problem ; neighborhood search ; warehouse ; nonlinear-flight-mechanics ; neural networks ; guidance, navigation, and control ; machine learning ; model ; matlab-simulink ; stochastic project scheduling ; genetic algorithm ; composite priority rules ; agent-based simulation ; horizontal cooperation ; e-groceries ; optimization ; simulation ; logistics ; distribution networks ; container terminal ; meta-heuristic ; horizontal transportation ; hyper-parameter optimization ; hybrid modeling ; system dynamics ; facility location Problems ; Monte Carlo simulation ; automated parcel lockers ; last-mile delivery ; location routing problem ; heuristics ; fuzzy logic ; dockless bike-sharing system ; Markovian queueing network ; relocation ; unequal demand ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::R Earth sciences, geography, environment, planning::RG Geography
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-09-11
    Description: This Special Issue contains selected papers from works presented at the 12th EASN (European Aeronautics Science Network) International Conference on Innovation in Aviation & Space for Opening New Horizons, which was held from the 18th until the 21st of October 2022, in Barcelona, with physical participation. About 470 participants contributed to a high-level scientific gathering providing some of the latest research results on the topic, as well as some of the latest relevant technological advancements. Twenty interesting papers, which cover a wide range of topics including characterization, analysis and design, as well as numerical simulation, are contained in this Special Issue.
    Keywords: parachute harness ; opening load ; limit load ; human factors ; air traffic management ; air traffic controllers ; subjective workload assessment ; air traffic control events ; simulation platform ; taskload ; real-time simulations ; air traffic management and airports ; air traffic control ; arrival manager ; controller support system ; severe weather visualization ; nowcasting ; weather research and forecasting ; flame propagation ; nanosecond plasma discharges ; lean burning ; ZDPlaskin ; CHEMKIN ; carbon fibre-reinforced plastics ; energy absorption ; impact ; optimisation ; simulation ; three-point bending test ; optimization ; multi-objective ; multi-point ; Kriging ; metamodel ; surrogate ; intake ; aerodynamics ; CFD ; mesh morphing ; achievement scalarizing function ; FUTPRINT50 ; sustainable aviation ; zero emissions ; hybrid-electric propulsion ; liquid hydrogen ; fuel-cell technology ; electric green taxiing system ; wingtip propulsion ; superconducting materials ; green approaches ; FMS ; AMAN ; CDA ; negotiation process ; on-ground energy supply ; hybrid-electric aircraft ; airport infrastructure ; conceptual design in aerospace ; Advanced Morphological Approach ; structured expert judgment elicitation ; ATFCM Regulations ; machine learning ; air traffic ; historical data ; explainability ; EMA ; prognostics ; PHM ; model-based ; metaheuristic ; MEA ; FDI ; reusable launch vehicle ; thermal protection system ; integrated thermal protection system ; ablative material ; ceramic matrix composite ; phase change material ; lattice structure ; additive manufacturing ; titanium ; powder metallurgy ; aerospace ; dual scale microstructure ; flight control actuators ; iron bird ; actuators ; holistic MCDM tool ; circular aviation ; sustainability ; CFRP recycling ; aviation ; sensitivity analysis ; AHP ; WSM ; data normalization ; aircraft design ; distributed propulsion ; hybrid-electric flight ; critical loss of thrust ; vertical stabilizer ; eVTOL ; multirotor aerial vehicle ; sizing ; hybrid energy storage ; battery ; hydrogen fuel cell ; supercapacitor ; self-healing efficiency ; functionalization reaction ; epoxy resin ; mechanical properties ; 17-4PH stainless steel ; 3D printing ; laser powder bed fusion ; printing orientation ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues::TBX History of engineering & technology
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-02-02
    Description: This reprint collects works which stimulate and spread the latest knowledge on energy in construction and building materials, providing the basis for new ideas on various topics for young investigators as well as leading experts in the field of Materials Science and Engineering. The collection features fifteen research papers and one review study. The main research aim covers the topic of thermal energy storage in construction and building components.
    Keywords: energy sustainability ; thermal insulation ; rapeseed ; woodchips ; bio-waste ; thermal transmittance ; un/steady conditions ; VOC emission ; electrical conductive concrete ; multifunctional composite ; conductive filler ; graphene nanoplatelets ; dielectric properties ; electric properties ; glass in building ; insulating glass units ; heat loss in buildings ; climatic loads ; hemp–lime composite ; thermal conductivity ; low-energy buildings ; specific energy absorption ; natural fiber ; thermal-energy storage ; enthalpy method ; apparent calorific capacity method ; recycled brick aggregates ; meso-scale ; PCMs ; paraffin waxes ; Stefan Problem ; coal bottom ash ; unit weight ; compressive strength ; ultrasonic velocity ; thermal-energy storage (TES) ; phase change materials (PCMs) ; latent enthalpy ; melting temperature ; differential scanning calorimetry ; IEA method ; multilayered walls ; building envelopes ; non-linear optimization ; genetic algorithms ; drying and wetting ; hygrothermal performance ; Polyisocyanurate board ; moisture content ; thermal performance ; vapor permeability ; energy efficiency ; cement-lime mortar ; experimental characterization ; climatic conditions ; heat flux ; extruded polystyrene ; pyrolysis ; kinetic model ; thermal degradation ; reaction mechanism ; AHP ; carbon fibres ; conductivity ; geopolymers ; LCA ; sustainability ; thermal storage ; energy saving with materials ; energy storage ; thermal diffusivity ; lime mortar ; iron (III) oxide ; phase change material ; melting ; latent heat thermal energy storage ; Taguchi method ; optimization ; double skin ; environmental profile ; material passport ; kinetic façade ; wooden façade ; paraffin ; fatty acid ; hydrate salts ; butyl stearate ; encapsulation ; n/a ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::P Mathematics & science::PH Physics
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-02-02
    Description: This reprint focuses on a number of timely and challenging issues in areas that support the design, implementation, and experimental testing of single and multiple autonomous air, land, and marine robots. Special emphasis is placed on the methods and techniques employed for motion planning and control that are rooted in solid theoretical concepts. Applications are also addressed in the area of advanced manipulator control. The reprint affords the reader a well-balanced presentation of a wide spectrum of topics that include, but are not limited to, the generation of optimal collision-free trajectories for heterogeneous vehicles working collaboratively or independently, the rapid adaptation of manipulator trajectories to task perturbations, the automatic collision avoidance for surface vessels, the path following controllers for marine and ground robots, the large-scale swarm counterattack strategies, and the optimal actuator configuration design for over-actuated underwater robots.
    Keywords: rapidly-exploring random trees ; manipulator ; priority determination ; real-time optimization ; path planning ; autonomous vessels ; collision avoidance ; model predictive control ; radial basis function networks ; trajectory optimization ; wheeled mobile robots ; path-following ; nonholonomic constraints ; over-actuated underwater robots ; multi-objective optimization ; underwater robots ; performance indices ; distributed trajectory generation ; Voronoi diagram ; multi-drone applications ; real-time replanning ; optimal trajectory generation ; Bernstein polynomials ; Bézier curves ; optimal control ; quadrotor control ; autonomous surface vehicle control ; cooperative path following ; online path planning ; chemical spill boundary encircling ; local planning ; obstacle avoidance ; manipulation ; task perturbation ; optimization ; control ; UAV ; ASV ; splashproof quadrotor ; vision system ; state machine ; autonomous landing ; marine robotics ; aerial robotics ; path following ; inner-outer loop control ; input-to-output stability ; AUVs ; ASVs ; robust control ; nonlinear control ; uncertain systems ; disturbance estimation ; robot safety ; parameter uncertainty ; swarming ; n/a ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues::TBX History of engineering & technology
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-02-20
    Description: This Special Issue is a collection of high-quality reviews and original papers from editorial board members, guest editors, and leading researchers discussing new knowledge or new cutting-edge developments in the field of engineering.
    Keywords: hydrofoil optimization ; NSGA-II ; CFD ; XFOIL ; NACA 63815 ; bezier curve ; ultrasound application ; glass bottles ; fruit juice ; foam drainage ; foaming behavior ; martensitic phase transformation (MPT) ; grain misorientation (GMO) ; surface roughening (Ra) ; grain size (Dg) ; solid oxide fuel cell ; computational fluid dynamics ; sensitivity analysis ; optimization ; sand retention test ; sand control devices ; sand production ; sand replication ; SAGD ; probabilistic risk assessment ; multi-hazards ; nuclear safety ; dry-cured ham ; food-grade chemical ; coating ; mechanical performance characteristics ; chemical treatment ; ham nets ; pest management ; mechanical test ; mesh fabric ; artificial magnetic conductor (AMC) ; specific absorption rate (SAR) ; coplanar waveguide (CPW) antenna ; magneto-dielectric (MD) ; mobile phones ; wireless communications ; optical multi-band systems ; physical layer modeling ; fiber-optic communications ; commercially available components ; planar transformer ; eco-design ; environmental impact evaluation ; product efficiency ; DC-DC converter ; dual active bridge (DAB) ; life cycle optimization ; fuel optimization ; low cost HEV ; optimum hybridization ; bubble nucleation ; gas-liquid systems ; supersaturation ; step-down pressure ; Fick’s second law diffusion ; characteristic time ; Q factor ; damping model ; transitional flow regime ; viscous flow regime ; MEMS oscillator ; bending modes ; zirconium phosphate ; titanium phosphate ; nanolayered phosphates ; nanofibrous titanium phosphate ; chemical synthesis ; crystal structure ; technological applications ; drug delivery ; biomedical applications ; n/a ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues
    Language: English
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  • 41
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-04-05
    Description: This reprint includes research papers on different disciplines related to composites. It contains research related to new topics such as nanotubes, fibres, admixtures added in cement and concrete. Additionally self-healing and self-sensing issues are presented. Environmental, and thermal-related topics are also discussed. Studies related to consolidation topics and alkali activation of clays are included. This blend of traditional and modern building materials, all having a common ground, the use of new technologies for improving fresh and harden state properties, make this volume interesting.
    Keywords: single wall carbon nanotubes ; surfactant ; TritonX-100 ; mass of specimens ; compressive strength ; flexural Strength ; bulk density ; ternary cements ; limestone ; siliceous fly ash ; granulated blast furnace slag ; concrete properties ; concrete durability ; CO2 emission ; detached decorative plasters ; injection grout ; glass microspheres ; reduced density ; stability ; strength ; durability ; clay mortars ; activating solutions ; wetting–drying ; freeze–thaw cycles ; microstructure ; superabsorbent polymer ; steel fibers ; high-performance fiber reinforced concrete ; digital image correlation ; autogenous shrinkage ; tensile behavior ; nano-calcium oxide ; nano-silica ; self-healing ; cement pastes ; curing regime ; gypsum binder ; additives ; light-materials ; porosity ; thermal insulation ; cement ; hydrated lime ; HEMC ; mortar ; paste ; hydration ; setting process ; ultrasonic technique ; graphite ; electrical conductivity ; self-sensing ; multi-walled carbon nanotubes ; cement-based materials ; flexural strength ; electrical resistivity ; activation energy ; supplementary cementitious materials ; packing density ; filler effect ; high calcium fly ash ; ladle furnace slag ; limestone filler ; foamed geopolymer ; reinforcing lightweight concrete ; glass fiber composites ; concrete ; thermal properties ; structural properties ; composite modified asphalt binder ; rheological properties ; storage stability ; amorphous poly alpha olefin ; polyphosphoric acid ; application properties ; water retention ; plaster ; cellulose ether ; viscosity ; self-compacting concrete (SCC) ; mix proportion design ; optimization ; experimental verification ; the grey relational analysis ; hook-end steel fiber ; bond performance ; pullout test ; inclination angle ; fiber spacing ; pullout load-slip curve ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues::TBX History of engineering & technology
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  • 42
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-11-30
    Description: Polyphenols are natural phytochemicals recognized as one of the largest and most widespread classes of plant constituents occurring throughout the plant kingdom. Over the years, polyphenols have attracted the attention of the scientific community due to their potential health-promoting effects. Owing to their several interesting properties, polyphenols have aroused considerable interest, shedding light on their chemistry, reactivity, biological properties and their beneficial effects on both plants and humans. As a result of these investigations, a huge number of research works have been reported on polyphenols. However, despite the voluminous literature studying polyphenols and their impact on human health, there are still many issues waiting to be explored in order to explain and elucidate the positive effects of polyphenols on human health. This Special Issue was intended to gather up-to-date knowledge related to the cutting-edge research in the broad scientific area of polyphenols, providing an opportunity to show the latest advances in the exploration of polyphenols and their health beneficial effects. The special issue was a great success with more than 50 published manuscripts covering various aspects related to polyphenols and their role in human health. We are confident that this Special Issue will be of great interest to the scientific community, and will contribute to the improvement of knowledge regarding the area of polyphenols, leading to a better understanding of their role in human health.
    Keywords: polyphenolic curcumin ; cisplatin ; combination therapy ; breast cancer ; apoptosis ; gemini surfactant nanoparticles ; Mucuna pruriens seed ; neuroprotective activity ; Parkinson’s disease ; anti-acetylcholinesterase activity ; L-dopa ; Mitrephora sirikitiae ; anti-inflammation ; lignans ; polyphenols ; mRNA expression ; cytokines ; gemini curcumin ; colorectal cancer ; RNA sequencing ; PPI network ; differentially expressed genes ; Ericaceae ; LC–DAD/ESI–MS ; phenolic compounds ; flavonoids ; antioxidant activity ; Artemia salina Leach ; resveratrol ; hexavalent chromium ; 8-hydroxydeoxyguanosine adduct repair ; endogenous antioxidant system ; antigenotoxic ; Opuntia sp. ; prickly pear ; inflammation ; ginseng leaf ; far-infrared irradiation ; ginsenosides ; antioxidants ; health benefits ; polysaccharides ; freeze-drying ; spray-drying ; antidiabetic ; Averrhoa carambola L. ; dihydrochalcone ; flavone glycosides ; obesity ; Oxalidaceae ; type 2 diabetes ; Alchemilla viridiflora Rothm. ; SARS-CoV-2 ; COVID-19 ; spike glycoprotein ; neuropilin-1 ; in vitro ; in silico ; Origanum compactum ; HPLC-PDA-ESI/MS ; antibacterial activity ; bioactive compounds ; nutraceuticals ; phenols ; pomegranate peels ; phytochemical ; wistin ; NADES ; total polyphenolic content ; enzyme inhibition ; functional food ; natural medicine ; Alzheimer cholinesterase inhibitors ; Maqui ; platelets ; phenolic compounds and cardiovascular ; phenolic acids ; sinapic acid ; ACE inhibition ; hypertension ; endothelial dysfunction ; Graminex pollen ; hydroalcoholic extract ; oxidative stress ; gene expression ; TRPV1 ; pterostilbene ; antioxidant ; bioavailability ; cancer ; diabetes ; Nrf2 ; Rosmarinus officinalis ; chemical analysis ; glioblastoma ; rhabdomyosarcoma ; red onion ; phytochemicals ; H9c2 rat cardiomyoblast ; primary human fibroblasts ; blood disorder ; haemoglobin ; natural product ; nutraceutical ; nutritional disease ; lichens ; neuroprotection ; cetrarioid clade ; grape polyphenols ; sarcopenia ; skeletal muscle ; clinical trial ; R. conduplicans ; lichen ; secondary metabolites ; DNA damage ; α-glucosidase inhibition ; adlay ; adlay testa ; antiglycation ; phenolic acid ; grape pomace ; anti-inflammatory ; curcumin ; poly(glycerol sebacate) ; nanoparticles ; drug delivery system ; human cervical cancer ; baicalein ; mangiferin ; quercetin ; diabetes mellitus ; peripheral artery disease ; cardiovascular diseases ; Cyperus esculentus ; tiger nut ; metabolomics ; UHPLC-ESI-QTOF-MS/MS ; foodomics ; scopolamine ; memory impairments ; phenol compounds ; polydatin ; 3-O-β-d-resveratrol-glucopyranoside ; cervical cancer ; lung cancer ; ovarian cancer ; nanosuspension ; antioxidant properties ; LPS-induced inflammation ; NO-scavenging activity ; mountain tea ; Lamiaceae ; iridoids ; phenylethanoids ; ultrasound-assisted extraction ; melittoside ; ajugoside ; verbascoside ; ferulic acid ; apoptosis and cell cycle arrest ; anti-angiogenesis ; anti-metastasis ; synergism ; Cymbopogon schoenanthus ; hyaluronidase ; acetylcholinesterase ; neurodegeneration ; skin ; hair ; human health ; immobilized PTP1B ; drug screening ; cell surface display ; salvianolic acid B ; traditional Chinese medicine ; Salicornia ; extraction technologies ; agro-industrial by-products ; biological activity ; circular economy ; health effects ; re-integration ; waste management ; blood orange peels ; infrared-assisted extraction ; optimization ; Aflatoxin B1 ; Achillea millefolium ; bioaccessibility ; Caco-2 absorption ; in vitro digestion ; sterol regulatory element-binding protein 1 ; human oral squamous cell carcinoma ; autophagy ; epidermal fatty acid-binding protein ; lentil hull ; enzymatic hydrolysis ; microwave-assisted extraction ; oligosaccharides ; Alocasia gigantea ; hepatocellular carcinoma ; histopathology ; UHPLC–DAD–ESI–MS/MS ; Salvianolic acid B ; matrix metalloproteinase 9 ; gelatinase B ; MDA-MB-231 human breast cancer cells ; TIMP-1 ; agri-food wastes ; sustainability ; polyphenols bioavailability ; polyphenols activity ; cosmeceuticals ; nano-delivery ; health ; Lithocarpus litseifolius ; trilobatin ; phloridzin ; phloretin ; metabolic pathway ; bioactivity ; honey ; functional beverage ; characterization ; alcoholic beverage ; fermented beverage ; functional foods ; beneficial effects ; biological treatment ; bioreactors ; water ; aerobic granular sludge ; conventional active ted sludge ; biofilter ; photobioreactor ; membrane bioreactor ; bio-electrochemical systems ; chitosan ; Indian borage ; biotic elicitor ; insect-based foods ; Folin–Ciocalteu method ; phenols and flavonoids ; polyphenols bioactivity ; cereal ; pre-harvest sprouting ; antiradical capacity ; antitumor activity ; bee products ; phenylamides ; multivariate statistical analysis ; Juniperus sabina ; cupressuflavone ; intranasal ; pharmacokinetic ; motor coordination ; oregano ; box–behnken ; phenolics ; HPLC-PDA analysis ; UPLC-Q-TOF MS ; olive pomace ; PBMC ; immune gene expression ; HPLC-DAD ; metabolome ; phenolic bioaccessibility ; propolis ; total phenolic compounds ; antioxidant capacity ; UHPLC-DAD-ESI-MS ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::P Mathematics & science::PS Biology, life sciences
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-03-07
    Description: Analytical chemistry is bound to face growing challenges in the future, especially for the quantification of trace analytes in complex matrices. Although the development of increasingly sensitive and specific instrumental techniques has achieved remarkable results, sample preparation is still a fundamental step, often limiting the whole workflow. In the context spawned by the recent international environmental policies that are responsive to the rapport of human activities with the surrounding environment, chemistry cannot hesitate to give its contribution. Almost pioneeringly, in analytical chemistry, we have been talking for some time about “green analytical chemistry”, its guiding principles, and the development of eco-friendly analytical approaches. However, the new and still open challenge is advance not only in eco-compatibility but mainly in eco-sustainability, rooting the future of analytical chemistry in new perspective aimed at minimizing the environmental impact of the analytical process by placing environmental cost as a priority aim on par with analytical performance. This is the reprint of a Special Issue that includes contributions focused on the progress in analytical chemistry based on the arguments previously raised and discussed, with a particular reference to eco-compatibility and eco-sustainability. The contributions include the development of low environmental impact methods and/or techniques or their applications.
    Keywords: dyes ; fatty acids ; microextraction ; magnetic ionic liquid ; sample preparation ; dispersive liquid–liquid microextraction ; single drop microextraction ; GC ; HPLC ; ionic liquids ; denitrogenation ; extraction ; pyridine ; quinoline ; aniline ; simulated oil ; adsorption ; gum Arabic ; magnetite ; nano-composite ; lead(II) ; mercury removal ; magnetic ; manganese ; cobalt ; iron ; spinel ; crosslinker ; phenolic acids ; vinylimidazole ; anion exchanger ; co-polymer ; solid-phase extraction ; sustainable analytical sample preparation ; indoor air quality ; fragrances ; indoor pollution ; endocrine disruptors ; analytical method ; GC-MS ; musks fragrances ; emerging contaminants ; α-isomethylionone ; halloysite nanotubes ; organosilyl-sulfonated halloysite nanotubes ; solid phase extraction ; pyrrolizidine alkaloids ; honey ; chlorzoxazone ; greener HPTLC ; paracetamol ; simultaneous detection ; validation ; AGREE ; traditional HPTLC ; vitamin D3 ; pulsed electric field ; bioactive compounds ; optimization ; mushrooms ; Agaricus bisporus ; phenyboronic-acid-functionalized ; Fe3O4 magnetic nanoparticles ; ortho-dihydroxy-containing compounds ; n/a
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-04-05
    Description: Several factors influence consumers’ choices of food products. While price remains the main criterion, quality, pleasure, convenience, and health are also important driving factors in food market evolution. Food enterprises are making significant efforts to manufacture products that meet consumers’ demands without compromising on safety standards. Additionally, the food industry also aims to improve the efficiency of transformation and conservation processes by minimizing energy consumption, process duration, and waste generation. However, foods are highly complex systems in which: (i) Non-linear dynamics and interactions among different temporal and spatial scales must be considered; (ii) A wide range of physical phenomena occur; (iii) Different food matrices, with different microstructures and properties are involved; and (iv) The number of quality and safety indicators (such as bacteria, total volatile basic nitrogen, color, texture, odor, and sensory characteristics) is substantial. Mathematical modeling and simulation are key elements that allow us to gain a deeper understanding of food processes and enable the use of tools such as optimization and real-time control to improve their efficiency. This Special Issue gathers research on the development of dynamic mathematical models that describe the relevant factors in food processes, and model-based tools to improve such processes. The contributions published in this Special Issue can be grouped into two categories: the evolution of safety and quality indicators in unprocessed food systems, and transformation and preservation processes.
    Keywords: food safety ; predictive microbiology ; mathematical models ; microbial inactivation ; sublethal injury ; bioprocess engineering ; fermentation process ; batch bioreactors ; dynamical non-linear mathematical model ; model identification ; particle swarm optimization ; simulation ; Carnobacterium maltaromaticum ; modeling ; microbial growth ; optimization ; fermentation ; temperature-dependent thermal properties ; scaled sensitivity coefficient ; TPCell ; parameter estimation ; inverse problems ; food microstructure ; electronic nose ; Shewanella putrefaciens ; dynamic growth ; spoilage prediction ; GC-MS ; acrylamide formation ; thermal resistance ; dynamic models ; FSSP ; DoE ; smoke ; fish ; wine fermentation ; nitrogen ; mathematical modeling ; population model ; maintenance ; variable yield ; underutilized wild species ; lycopene ; viscosity ; thermal processing ; color ; mathematical modelling ; fish quality ; fish freshness ; bibliometric analysis ; stress variables ; quality degradation ; beer fermentation ; food industry ; multi-objective optimization ; model-based optimization ; equivalent solutions ; uncertainty ; Monte Carlo ; frying operation ; acrylamide ; quality ; n/a ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues::TBX History of engineering & technology
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-02-02
    Description: Micro/Nano Structures and Systems: Analysis, Design, Manufacturing, and Reliability is a comprehensive guide that explores the various aspects of micro- and nanostructures and systems. From analysis and design to manufacturing and reliability, this reprint provides a thorough understanding of the latest methods and techniques used in the field. With an emphasis on modern computational and analytical methods and their integration with experimental techniques, this reprint is an invaluable resource for researchers and engineers working in the field of micro- and nanosystems, including micromachines, additive manufacturing at the microscale, micro/nano-electromechanical systems, and more. Written by leading experts in the field, this reprint offers a complete understanding of the physical and mechanical behavior of micro- and nanostructures, making it an essential reference for professionals in this field.
    Keywords: deployable structure ; compliant mechanism ; bistable mechanism ; programmable behaviour ; 5G ; mmWave ; SIW ; hybrid feeding ; SIC ; wide bandwidth ; ECC ; stable high gain ; isolation ; MEG ; DIG ; SAR ; SSL ; metamaterials (MMTs) ; DRAs ; Fano resonance ; SPPs ; U-shaped ring resonator ; sensor ; metal-insulator-metal ; micropump ; magnetorheological ; MRE ; magneto-solid-fluid interaction ; additive manufacturing ; microscale ; design ; materials ; processes ; applications ; atomic layer deposition ; sacrificial templates ; 3D nanostructures ; EDM ; SiCp/Al ; recast layer ; residual stress ; solidification ; deep-narrow groove ; GH4169 alloy ; electrochemical milling ; wedged end face ; micro automotive electronic pump ; computational fluid dynamics ; numerical simulation ; experimental techniques ; cavitation ; thermodynamic effects ; InP ; SiC ; flip-chip bonding ; millimeter wave ; heterogeneous integration ; linear guide ; decoupling mechanism ; finite element analysis ; micro-milling ; wear ; tool failure ; coating ; substrate ; delamination ; Fresnel zone plate ; annular structure ; femtosecond laser machining ; concentric double-ring beams ; MEMs ; burn-in ; quality ; reliability ; warranty ; maintenance ; optimization ; degradation ; material properties ; test structures ; stress gradients ; thin-film material properties ; micro- and nano-systems (MNS) fabrication and manufacturing ; microstructures ; nanostructures ; mechanics ; analysis ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues
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  • 46
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-01-05
    Description: The Special Issue Modeling and Simulation in Engineering, belonging to the section Engineering Mathematics of the Journal Mathematics, publishes original research papers dealing with advanced simulation and modeling techniques. The present book, “Modeling and Simulation in Engineering I, 2022”, contains 14 papers accepted after peer review by recognized specialists in the field. The papers address different topics occurring in engineering, such as ferrofluid transport in magnetic fields, non-fractal signal analysis, fractional derivatives, applications of swarm algorithms and evolutionary algorithms (genetic algorithms), inverse methods for inverse problems, numerical analysis of heat and mass transfer, numerical solutions for fractional differential equations, Kriging modelling, theory of the modelling methodology, and artificial neural networks for fault diagnosis in electric circuits. It is hoped that the papers selected for this issue will attract a significant audience in the scientific community and will further stimulate research involving modelling and simulation in mathematical physics and in engineering.
    Keywords: category theory ; mathematical modelling ; abstraction ; formal approaches ; functors ; surrogate model ; Kriging ; high-dimensional problems ; principal component dimension reduction ; trochoidal milling ; variable feed ; spiral groove ; CAM ; Levy walks ; anomalous diffusion ; fractional material derivative ; combustion process ; local estimate ; Monte Carlo method ; modeling ; analog circuits ; fault diagnosis ; neural networks ; carbon nanotubes ; heat transfer ; nanofluid ; rotating ; stretching/shrinking ; adjoint ; gradient-descent ; junctions ; transport equation ; unsteady flow ; rotation ; hybrid nanofluid ; stretching sheet ; radiation ; inverse modeling ; calcium leaching ; grout curtain ; hydraulic conductivity ; optimization ; fuzzy model ; response surface methodology ; diesel engine performance ; biodiesel ; anomalous diffusion equation ; continuous time random walk ; roughness scaling extraction ; fractal dimension ; accelerated algorithm ; Weierstrass–Mandelbrot function ; milling vibration signal ; spot volatility ; change of frequency ; roughness of volatility ; hurst exponent ; Chinese A-share market ; ferrofluidslip effect ; Stefan blowing ; thermodiffusion ; n/a ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::P Mathematics & science
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  • 47
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-11
    Description: This reprint, entitled “Process Control and Smart Manufacturing for Industry 4.0”, contains the extended papers from the Series of annual IFSA conferences on Automation, Robotics and Communications for Industry 4.0/5.0 (ARCI) on the following topics: Process Automation, Process Control and Monitoring, Design Principles in Industry 4.0, Smart Manufacturing and Technologies, Smart Factories, Machine Learning and Artificial Intelligence in Manufacturing. The reprint contains 13 chapters written by 54 ARCI conference participants from seven countries: China, Croatia, Denmark, Germany, Italy, Poland and Romania. This reprint will inform readers of cutting-edge developments in the field and provide effective starting points and a road map for further research and development. All chapters follow the same structure: firstly, an introduction to the specific topic under study; secondly, a description of the field, including sensing or/and measuring applications. Each chapter ends with a curated list of references, including books, journals, conference proceedings and websites. “Process Control and Smart Manufacturing for Industry 4.0” is intended for researchers and scientists from academia and industry, as well as for postgraduate students.
    Keywords: steel alloys ; resistance spot welding ; RSW ; electrode wear ; electrode tip-dressing ; process monitoring ; mushrooming ; plateau forming ; quality control ; COVID-19 ; FDM ; 3D printing ; injection molding ; personal protection ; rapid prototyping ; protective face shields ; mechatronics line ; visual servoing system ; wheeled mobile robot ; industrial robotic manipulator ; Industry 4.0 ; NDT ; magnetic particle inspection ; optimization ; condition monitoring ; vibration ; acoustic emission ; drive train ; data fusion ; machine learning ; product morphology ; core data model ; phase rule filter ; phase private data model ; storage system ; forklift AGV ; deep learning ; semantic segmentation ; H-Swish ; community transformation ; community innovation governance ; ternary space ; coupling and coordination analysis ; lean manufacturing ; lean principles ; pull principle ; production control mechanisms ; production processes ; lean implementation ; batch process ; partial least squares ; multi-phase ; multi-mode ; master production scheduling ; make-to-order ; mathematical programming ; agent-based ; overtime ; earliness ; tardiness ; equipment selection decision ; business compass ; energy consumption ; processing time ; beetle antennae search algorithm ; sustainable blank dimension design ; energy-saving ; low-carbon ; grey wolf algorithm ; gas–solid ; cyclone ; separator ; gas dynamics ; erosion ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-03-30
    Description: This Special Issue, "Mathematical and Molecular Topology" welcomed papers from a broad interdisciplinary area, since topology is concerned with the properties of objects that are preserved under continuous deformations, such as stretching, twisting, crumpling and bending. One of the oldest problems in topology is The Seven Bridges of Königsberg. Topology naturally finds application in all fields of engineering, physical sciences, life sciences, social sciences, medicine, business and even arts. The motivating insight behind topology is that some geometric problems depend not on the exact shape of the objects involved, but rather on the way they are put together. Circa 1750, Euler stated the polyhedron formula, V − E + F = 2 (where V, E, and F respectively indicate the number of vertices, edges, and faces of the polyhedron), which may be regarded as the first theorem, signaling the birth of topology. Subjects included in topology are graph theory and algebraic topology.
    Keywords: closure space ; canonically closed ; weakly normal ; almost normal ; π-normal ; weakly π-normal ; κ-normal ; local convergence ; nonlinear equations ; Banach space ; Fréchet-derivative ; Gaussian ; optimization ; geometry ; molecular modeling ; amino acids ; maximum clique ; protein graphs ; machine learning ; ProBiS ; entropies via various molecular descriptors ; H3BO3 layer structure ; subdivision of H3BO3 ; line graph of H3BO3 ; thema EDItEUR::K Economics, Finance, Business and Management::KN Industry and industrial studies::KNT Media, entertainment, information and communication industries::KNTX Information technology industries ; thema EDItEUR::U Computing and Information Technology::UY Computer science
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-03-28
    Description: Electric motors consume about 70% of industrial electricity and about 40%–45% of produced electricity in the world. This means that using high-efficiency electric motors will improve the level of energy consumption. In addition, it will reduce the impact of greenhouse gas emissions on the environment. Furthermore, it will significantly reduce the need for new power plants, thus reducing the invested resources to do so. Electric machines employing rare-earth magnets have higher efficiency and power density. However, rare-earth magnets are expensive, and their manufacturing process, as well as the process of mining rare-earth raw materials, is harmful to the environment. Thereby, the development of energy-efficient electric machines without rare-earth magnets is of great interest. The aim of this reprint was to gather new research publications in various topics related to improving the energy efficiency of electric machines without using rare-earth magnets. Ten articles have been published which cover various topics.
    Keywords: centrifugal pump ; energy efficiency ; induction motor ; line-start synchronous motor ; synchronous reluctance motor ; throttling control ; simulation-based optimization ; coyote optimization algorithm ; water pumping ; axial flux induction motor ; finite element analysis ; performance evaluation ; cogging torque ; ferrite PM ; flux reversal machine ; non-rare earth ; wind energy ; international electrotechnical committee ; line start synchronous reluctance motor ; power factor ; super premium efficiency ; switched reluctance machine ; winding arrangement ; static torque ; dynamic torque ; torque ripple ; core loss ; flux reversal ; leakage-flux ; magnetic flux path ; electric motorcycle ; switched reluctance motors ; indirect torque control ; linear machine ; flux switching machine ; modular stator ; crooked tooth ; ferrite magnet ; genetic algorithm ; thermal analysis ; LPMEC model ; field-excited machine ; flux-switching machine ; performance analysis ; optimization ; switched reluctance motor (SRMs) ; hybrid excitation of SRM (HESRM) ; hybrid excitation of SRM without a permanent magnet ; permanent magnet (PM) ; electric vehicle motor ; n/a ; thema EDItEUR::G Reference, Information and Interdisciplinary subjects::GP Research and information: general ; thema EDItEUR::P Mathematics and Science::PH Physics
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  • 50
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-04-05
    Description: Microgrids deliver efficient, low-cost, and clean energy while improving regional electric grid operation and stability. They further provide exceptional dynamic responsiveness for energy resources. A global portfolio of operations centered on the development and deployment of microgrids to increase grid dependability and resilience would therefore assist communities in better preparing for future weather catastrophes and keep the world moving toward a sustainable energy future. Solar photovoltaic systems are seen as a promising renewable resource, and their application in microgrids has grown rapidly in recent years.
    Keywords: doubly fed induction generator ; wind turbine ; renewable energy ; rotor control ; steady state model ; HIL ; LLC resonant converter (LLC-RC) ; soft switching ; time domain analysis ; ZVS ; ZCS ; ANFIS ; ECMS ; hybrid electric vehicle ; Haar wavelet transform ; hydrogen consumption ; power management scheme ; system efficiency ; emissions trading system ; allowance allocation ; quantitative statistics ; qualitative analysis ; cost function ; model predictive current control ; single-phase shunt active power filter ; THD ; multi-input multi-output ; step-up converter ; energy storage ; DC–DC converter ; transformerless inverter ; photovoltaic ; high-efficiency inverter ; grid-connected system ; single-phase inverter ; smart microgrid ; optimization ; hybrid renewable energy source ; internet of things ; cost of electricity ; information and communication technology ; coupled inductor converter ; full bridge converter ; half bridge converter ; interleaved converter ; micro grid ; photo voltaic (PV) ; resonant converter ; zero voltage switching (ZVS) ; zero current switching (ZCS) ; induction motor drive ; dc-link voltage balancing ; space vector modulation ; switching loss ; total harmonic distortion ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::P Mathematics & science::PH Physics ; bic Book Industry Communication::P Mathematics & science::PH Physics::PHK Electricity, electromagnetism & magnetism
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-11
    Description: Non-equilibrium thermodynamics is a relatively new field of research, and one which is also becoming increasingly important in engineering applications. However, despite the many approaches developed in recent decades, they all raise questions from a mathematical point of view, for instance on the proper definitions of initial and boundary conditions, analytical and numerical solution methods, and geometrical background. These questions cover numerous topics, including the mathematical analysis of various thermodynamic approaches, the investigation of the resulting governing equations, symmetry analysis of the solutions, and how the numerical methods can be built on the geometrical background. The aim of this Special Issue is to discuss and present up-to-date problems that may not be constrained to the previously mentioned aspects but must be connected to non-equilibrium thermodynamics. Thus, in the present Special Issue we aim to present the open mathematical questions on and characteristics of different thermodynamic approaches.
    Keywords: cyclic optimal control ; finite time thermodynamics ; endoreversible thermodynamics ; Stirling ; optimization ; shock structure ; extended thermodynamics ; kinetic theory of gases ; TASEP ; ASEP ; multi-species ; Bethe ansatz ; hyperbolic relaxation system ; structural stability condition ; generalized Kreiss condition ; second law of thermodynamics ; dissipation principle ; state space ; balance laws ; entropy inequality ; n/a ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials
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  • 52
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-04-05
    Description: Robotics and intelligent systems are key technologies to promote efficient and innovative applications in the most diverse domains (industry, healthcare, agriculture, construction, mobility, etc.), performing and supporting activities that are not suitable to be performed by humans. Such activities are frequently time-consuming, repetitive tasks with low added value, which are physically demanding and/or dangerous. Nevertheless, robotics and intelligent systems face several scientific and technological challenges related to their integration and interoperability with other systems, safety, flexibility, re-configurability and autonomy. These challenges are especially relevant when robots operate in real unstructured environments and share a workspace with humans and other equipment. This reprint collects research achievements, ideas, and applications regarding advanced intelligent robotic systems, covering diverse technologies and application domains. Generically, the contributions cover optimal path-planning strategies and innovative designs for mobile manipulators, the integration of robotic and intelligent systems, grasping, manipulation, teleoperation, haptics, user experience approaches for collaborative robots, and multi-agent systems.
    Keywords: robot ; manipulator ; robotized workplace ; robotic cell ; optimization ; wear ; motion planning ; trajectory tracking ; mobile manipulator ; joint constraints ; self-collision avoidance ; manipulability ; service robot ; assistant robot ; collaborative robot ; healthcare ; elderly care ; intelligent systems ; COVID-19 ; multi-agent systems ; bigraphs ; design ; verification ; modeling ; non-functional requirements ; robot path planning ; RRT ; midpoint interpolation ; triangular rewiring ; path smoothness ; non-prehensile manipulation ; manipulation planning ; pivoting ; robotics ; mobile manipulation ; large-scale inspection ; wind turbine production ; autonomous navigation ; surface-orthogonal path planning ; intelligent robot ; flexible production ; manipulation ; intelligent control ; User eXperience ; human–robot interaction ; human–robot collaboration ; human-centered design ; augmented reality ; human factors ; omnivehicle ; omnitracks ; Mecanum rollers ; FDM ; simultaneous localization and mapping ; dual lidar inertial odometry ; IMU ; time synchronization ; tight coupling ; impact hammers ; industrial robotics ; haptic teleoperation ; underground mining ; genetic algorithm ; principal component analyses ; standard triangle language ; traveling salesman problem ; trajectory planning ; haptic recognition ; convolutional neural network ; channel attention ; spatial interactive second-order feature ; multiorder feature ; n/a ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues::TBX History of engineering & technology
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-09
    Description: Traditional wood composites are produced with synthetic, formaldehyde-based adhesives, commonly made from fossil-derived constituents, such as urea, phenol, melamine, etc. Along with their undisputable advantages, these adhesives are characterized by certain problems, connected with the emission of hazardous volatile organic compounds (VOCs), including free formaldehyde emission from the finished wood composites, which is carcinogenic to humans and harmful to the environment. The growing environmental concerns, connected with the adoption of circular economy principles, and the new, stricter legislative requirements for the emission of harmful VOCs, e.g., free formaldehyde, from wood composites, have posed new challenges to researchers and industrial practice, related to the development of sustainable, eco-friendly wood composites, optimization of the available lignocellulosic raw materials, and use of alternative resources. This reprint presents a collection of 10 high-quality original research and review papers providing examples of the most recent advances and technological developments in the fabrication, design, characteristics, and applications of eco-friendly wood and wood-based composites.
    Keywords: max stress ; Tsai-Wu ; Tsai-Hill ; Puck ; Hoffman ; Hashin ; failure criteria ; beech ; finite element modelling ; composites ; biomaterials ; bio-composites ; bio design ; mycelium-based composites ; biopolymers ; interior design ; architecture ; wood ; mycelium ; fungi ; patent documents ; advanced biocomposites ; natural fibers ; green flame retardants ; fire retardancy ; product safety ; acid precipitation ; single and fractionation step ; kraft lignin ; physical and chemical properties ; A. mangium black liquor ; antibacterial ; biocomposite ; mechanical properties ; poly (lactic acid) ; wood leachate ; wood-based panels ; fiberboards ; adhesive system ; hydrolysis lignin ; phenol–formaldehyde resin ; optimization ; hot-pressing ; birch outer bark ; suberinic acids ; particle boards ; Gigantochloa pruriens ; chemical properties ; physical and mechanical properties ; wood-based composites ; particleboard ; thermoplastic starch ; Arenga pinnata ; modification ; benzoyl peroxide ; twin-screw extruder ; coating ; heat treatment ; nanotechnology ; nanosilver ; permeability ; porous structure ; solid wood ; thermal modification ; n/a ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-04-05
    Description: This Special Issue reprint is dedicated to presenting open and challenging issues in earthquake engineering. It consists of 29 peer-reviewed papers that cover a broad range of subjects and applications related to the seismic assessment and design of structures. Based on advanced computational, analytical, numerical, and experimental approaches novel results and discussions are presented. Within this context, the first studies of this issue/reprint are focused on providing an insight into the seismic performance of structures taking into account significant engineering components that still have not been fully addressed. Subsequently, there are studies with new strategies to improve the effectiveness of the dampers on the seismic mitigation performance of structures. Concerning performance-based earthquake engineering, new approaches in the seismic fragility assessment of structures are introduced. Furthermore, new innovative types of reinforced steel for the seismic design and assessment of RC structures are analytically and experimentally evaluated. The seismic performance of retrofitted structures is also addressed, while analytical modeling tools that can effectively capture the seismic behavior of substandard RC structural elements are introduced. Some other papers provide experimental results to evaluate and/or validate the structural performance of elements, such as anchors, connectors, and nuclear components. Finally, this issue/reprint also incorporates modified methodologies and identification techniques to improve seismic analysis methods in the field of structural engineering.
    Keywords: non-linear dynamic analysis ; seismic response ; vertical component ; acceptance criteria ; steel buildings ; Impulsive Semi-Active Mass Damper ; frequency ratio ; mass ratio ; structural displacement ; maximum roof displacement ; plastic hinge region ; smooth reinforcement ; M/φ characteristics ; atypical cross-section ; post-installed anchor ; structural performance evaluation ; dynamic load protocol ; shear ; pull-out ; cracked concrete ; seismic ; bridge ; near-fault vertical earthquake ; multiple separations ; seismic excitation period ; vertical excitation amplitude ; bending damage ; axial compression failure ; seismic isolation ; laminated rubber bearing ; lead rubber bearing ; shaking table test ; nuclear facility component ; beyond design basis earthquake ; LRB design ; seismic performance ; seismic isolation frequency ; dual-phase reinforcing steel ; earthquake-resistant design ; Tempcore reinforcing steel ; reinforced concrete frames ; seismic analysis ; pushover analysis ; setbacks ; earthquake ; damage index ; seismic evaluation performance ; damage distribution ; dam pier ; reinforced concrete (RC) ; reinforced polymer cement mortar (RPCM) ; SRS method ; seismic response analysis ; FEM ; reinforcement effect ; upgrading old RC structures ; shear retrofit ; T-beams ; CFRP strips ; anchoring devices ; nonlinear response time history analysis ; reinforced concrete shear wall structure ; modal-based ground motion selection ; frequency contents combination in the time domain ; dominated mode ; RC structure ; structural pounding ; probabilistic seismic assessment ; fragility curves ; global and local EDPs ; linear and bilinear PSDMs ; PSDM’s assumptions ; nonlinear dynamic analyses ; Eurocode 8 ; concrete ; anchor bolt ; pull-out strength ; SPH method ; masonry infill panels ; torsional behavior ; incremental dynamic analysis ; collapse fragility curve ; damage measure ; steel structure ; buckling-restrained brace ; cumulative damage ; multi-hazard ; wind ; inelastic seismic analysis ; nuclear metal component ; design-basis earthquake ; beyond-design-basis earthquake ; plastic strain ; strain gauge ; Chaboche kinematic hardening model ; Voce isotropic hardening model ; strain gauge rosettes ; principal strain ; RC isolated continuous girder bridge ; the copula function ; seismic fragility analysis ; near-fault ground motions ; passive energy dissipation systems ; tuned mass damper ; viscous damper ; friction damper ; optimization ; dynamic response ; seismic site classification ; seismic design codes ; earthquake resistance design ; design criteria ; soil response ; steel structures ; autoclaved lightweight aerated concrete (ALC) panel ; seismic behavior ; finite element analysis ; parametric study ; traffic engineering ; seismic calculation ; loess area ; DBM ; DESANM ; structural irregularity ; incidence angle ; nonlinear time-history analysis ; maximum displacement ; maximum interstory drift ; reinforced concrete ; substandard buildings ; brittle failure ; earthquake loads ; rapid seismic assessment ; IDA ; the cloud method ; IMPA ; MPA ; nonlinear static analysis ; nonlinear dynamic analysis ; fragility curve ; magnetorheological damper ; story drift ratio ; shear force ; bending moment ; torsional vibration ; SPEAR ; RC beam-column joint ; pushover ; beam-column joints ; carbon fiber-reinforced polymer longitudinal bars ; tests ; bond ; cyclic loading ; response controlled systems ; dampers’ combination ; dynamic characteristics ; frequency domain ; nonparametric method ; parametric method ; subspace identification ; n/a ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues::TBX History of engineering & technology
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-03-23
    Description: Civil engineering structures may vibrate due to different sources of excitations such as earthquakes, wind, traffic, humans, etc. The resulting vibrations may not be acceptable from the perspective of vibration comfort or can even impair the structure's safety. Depending on the excitation mechanism, anti-vibration measures range from increasing the structural damping using local dampers, decoupling the structure from the disturbance using vibration isolators and compensating for the excitation forces using vibration compensators. The Special Issue "Efficient Damping and Isolation Systems for Civil Structures" presents some of the recent advances in the associated fields of research and development.
    Keywords: isolation ; high damping rubber bearing ; low shape factor ; performance test ; experiment ; three-dimensional (3D) seismic isolation ; vertical seismic isolation device ; disc spring ; helical coil spring ; steel damper ; laminated rubber bearing ; seismic energy dissipation ; nuclear power plant equipment ; seismic isolation frequency ; hysteretic behavior ; cable ; control ; damping ; semi-active ; negative stiffness ; vibration ; liquid storage tank ; MetaFoundation ; time domain analysis ; earthquake ; passive control ; stop band ; suspended ceiling systems ; passively controlled structure ; pulley tackle mechanism ; shake table test ; simulation analysis ; tower-like structures ; tuned liquid gas damper ; elastic membrane ; gas spring ; gas volume ; SA-TLGD ; TLCGD ; TLCD ; TMD ; inerter ; optimization ; TMDI ; vibration mitigation ; tuned sloshing damper ; TSD ; tuned mass damper ; numerical simulation ; coupled simulation ; computational wind engineering ; CWE ; hysteresis ; internal resonances ; nonlinear modal interaction ; n/a ; thema EDItEUR::A The Arts::AT Performing arts::ATF Films, cinema ; thema EDItEUR::A The Arts::AT Performing arts::ATJ Television
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-03-07
    Description: This reprint aims to disseminate the latest research achievements, findings, and ideas in the robotics field, with particular focus on the Italian scenario. It covers a range of topics related to the theory, design, practice, and applications of robots, such as robot design and kinematics, dynamics of robots and multi-body systems, linkages and manipulators, control of robotic systems, trajectory planning and optimization, innovative robots and applications, industrial robotics, collaborative robotics, medical robotics, assistive robotics, and service robotics. The reprints contributions include (but are not limited to) revised and substantially extended versions of selected papers that were presented at the 2nd International Conference of IFToMM, Italy (IFIT 2018).
    Keywords: robotics ; humanoids ; foot mechanism ; prosthetics ; neurorehabilitation ; humanoid robotics ; assistive robotics ; service robotics ; mechanism design ; kinematics ; cable-driven robots ; compliant mechanisms ; underactuated mechanisms ; motion analysis ; workspace ; deburring ; robot ; cutting forces ; compliant mechanism ; manipulator design ; robot kinematics ; synthesis of kinematic structure ; loop chain ; virtual link ; instant center ; multi-degree-of-freedom ; Aronhold–Kennedy theorem ; rescue robotics ; search and rescue ; robot design ; mobile robot ; patient transfer ; casualty extraction ; planar CDPR ; prescribed task ; optimization problem ; multiobjective formulation ; mono-objective formulation ; position control approach ; validated experimentally ; wheelchair upper limb exoskeleton robot ; ADL assistance ; PD control ; dynamic modeling of an upper limb exoskeleton ; trajectory tracking ; wearable exoskeleton ; reconfigurable parallel mechanism (RPM) ; degree-of-freedom (DOF) ; circular guide ; computer-aided design (CAD) modeling ; virtual and physical prototyping ; screw theory ; kinetostatic analysis ; digital twins ; 3D printing technology ; parallel mechanism ; RoboMech ; structural-parametric synthesis ; Chebyshev and least-square approximations ; kinematic analysis ; robotic rehabilitation ; brachial monoparesis ; torque monitoring ; human–robot interaction ; HRI (human–robot interaction) ; Leap Motion ; UR5 ; hand gesture recognition ; pointing gestures ; collaborative robotics ; parallel robot ; non-uniform covering ; optimization ; singularity zones ; link interference ; n/a ; bic Book Industry Communication::M Medicine ; bic Book Industry Communication::M Medicine::MJ Clinical & internal medicine::MJC Diseases & disorders::MJCL Oncology
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-03-28
    Description: The present text is an edited Special Issue in reprint form. This Special Issue took the opportunity to invite researchers to contribute their latest original research findings, which were either advances in the state-of-the-art of mathematical methods, theoretical studies, or experimental studies that extend the bounds of existing methodologies to new contributions, addressing current challenges and engineering problems on “Recent Advances in Mathematical Aspect in Engineering”. Although this reprint is not a formal textbook, it will definitely be useful for university teachers, research students and industrial researchers, and will assist in overcoming difficulties while dealing with the nonlinear governing equations of fluid mechanics, energy, heat transfer, steady and unsteady flow problems, nanofluids, thermodynamics, magnetohydrodynamics, peristaltic and blood flow. For nonlinear and coupled differential equations, it is often more difficult to achieve an analytic solution or even a numerical one. This reprint has successfully handled this challenging task with the techniques reported within. In addition, the findings of the simulations are logically realistic and meet the standard of sufficient scientific value.
    Keywords: rotating disk ; Arrhenius activation energy ; nanoparticles ; binary chemical reaction ; MHD ; heat generation/absorption ; slip effects ; numerical solution ; Keller-box technique ; Casson nanofluid ; Power law fluid ; Convective boundaries ; Radiation effect ; Inclined surface ; maxwellfluid ; mixed convection ; isothermal stretching disks ; homotopy analysis method ; rotating stretchable disk ; newtonian fluid ; axisymmetric flow ; convection ; entropy production ; heat transfer engineering ; blood flow ; flow distribution ; maldistribution ; numerical modeling ; symmetry ; printed circuit heat exchanger ; finite-time boundedness ; T-S fuzzy systems ; time-varying delay ; Lyapunov–Krasovskii functional (LKF) ; cilia motion ; blood clot ; endoscopy ; mass transport ; particle-fluid ; symmetric curved channel ; Johnson-Segalman fluid ; convective conditions ; compliant walls ; fluid mechanics ; optimization ; energy ; heat transfer ; steady and unsteady flow problems ; porosity ; nanofluids ; particle shape effects ; multiphase flow ; thermodynamics ; magnetohydrodynamics ; electromagnetic ; physiological fluid phenomena in biological systems ; peristaltic ; thema EDItEUR::G Reference, Information and Interdisciplinary subjects::GP Research and information: general ; thema EDItEUR::P Mathematics and Science::PH Physics
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-03-28
    Description: This reprint aims to provide a common forum to share knowledge about the growing threat of geohazards such as landslides, earthquakes, floods, tsunamis, coastal changes, and drought, among many others, due to the expanding size of cities and urban areas, the critical use of agricultural lands, the increased use of infrastructure, and the effects of climate change.A total of thirty-one papers (twenty-eight research papers, one review paper, and one technical note) on different topics like coastal changes, landslides, earthquakes, and others are presented in this reprint. The published works have been carried out in different parts of the world, such as Spain, Portugal, France, Italy, Hungary, China, South Korea, India, Malaysia, Algeria, Canada, or Mexico.
    Keywords: debris flow ; berm ; mitigation measure ; volumetric concentration ; gas hydrates ; European margins ; geohazard assessment ; electric tomography ; three-dimensional ; electrodes ; seat control ; foundations ; stabilization methodology ; landslide displacement prediction ; decomposition-ensemble model ; recurrent neural network (RNN) ; ensemble empirical mode decomposition (EEMD) ; maximal information coefficient (MIC) ; flood vulnerability ; spatial analysis ; logistic regression ; ROC analysis ; flood detection ; site effects ; spectral ratio ; trans-mexican volcanic belt ; landslide ; safety factor ; Central Spanish Pyrenees ; soft rocks ; stabilization measures ; b value ; stable state ; depth ; Longmenshan fault ; flood risk ; cultural heritage sites ; bathymetric data ; manning’s roughness coefficient ; hydrodynamic modelling ; beach erosion ; storm waves ; recovery process ; video monitoring ; pocket beach ; Middle-Chelif sedimentary basin ; HVSR ; array measurement ; frequency–wavenumber (F–K) method ; landslide-induced wave ; lake-tsunami assessment ; mountain lakes ; landslides ; artificial rainfall ; grain size ; rainfall pattern ; pore water pressure ; generator of earthquakes ; low-to-moderate seismicity ; stochastic ; France ; loess ; dry-wet cycles ; triaxial creep test ; creep behavior ; strain-time ; long-term strength ; forest fires ; Cat model ; climate change ; disaster risk ; machine learning ; R programming language ; extreme droughts ; modeling ; crop yield losses ; crop insurance ; landslide dynamics ; landslide classification ; dynamic models ; depth-averaged model ; GIS ; coastal morpho-sedimentary dynamics ; erosion/accretion patterns ; remote sensing ; beach types ; meteo-ocean effects ; landslide susceptibility ; volume ratio ; reserve increase-rate-analysis method ; Loess Plateau ; landslide risk ; natural phenomena ; Reggio Calabria ; AHP method ; multi-hazard ; earthquake ; wind ; flood ; hazards ; hurricane ; mitigation ; resilience ; risk assessment ; bridge ; building ; wind turbine ; control system ; Middle-Chelif Basin ; ambient vibrations ; array techniques ; Vs30 ; site classification ; liquefaction ; electron bursts ; NOAA satellite ; East Pacific earthquakes ; conditional probability ; risk reduction ; validation ; predictive capability ; tropical climate ; Malaysia ; insurance hazard model ; earthquake clustering ; space–time ETAS model ; Hungarian earthquake catalogue ; 2020 Petrinja earthquake ; multi-criteria decision analysis (MCDA) ; analytical hierarchy process (AHP) ; receiver operating characteristics ; area under the curve (AUC) ; completely weathered granite ; runoff ; sediment production ; slope erosion ; flow velocity hydrodynamic characteristics ; combination weighting method ; cluster analysis ; optimization ; classification of debris flows ; Longmenshan Town ; dune cliff ; land management ; data analysis ; earth fissure ; microtremor testing ; spectrum analysis ; amplification effect ; thema EDItEUR::G Reference, Information and Interdisciplinary subjects::GP Research and information: general ; thema EDItEUR::K Economics, Finance, Business and Management::KC Economics::KCV Economics of specific sectors::KCVG Environmental economics
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-03-30
    Description: This reprint of a Special Issue in the journal Algorithms is dedicated to scheduling algorithms and their various applications. In addition to the Editorial, it contains 12 papers including a survey of assembly and production line design and scheduling under uncertainty. Other topics addressed in this reprint are the energy management of power systems, cost scheduling for financial data supply chains, staff scheduling in the construction industry, various assignment problems, single-lane roundabouts, robotic arm-based batching systems with conveyor belts, as well as single-machine and flow-shop scheduling problems.
    Keywords: batteries ; photovoltaic cell ; fuel cell ; super capacitor ; state-of-charge ; energy management ; permutation flow shop ; simheuristic ; multicriteria ; PAES ; GRASP ; AHP ; financial data ; supply chain management ; data batching ; scheduling ; batching cost ; parallel processing ; optimization ; multi-processing commitment ; hybrid mixed-flow workshop ; hybrid particle swarm algorithm ; algorithm parallelization ; computational efficiency ; construction industry ; irregular employees ; staff scheduling ; mathematical model ; business level strategies ; decision-making ; organizational effectiveness ; UPC ; distributed computing platform ; uniform job ; static assignment ; linear equations ; assignment problem ; traveling salesman problem ; vehicle routing problem ; flow shop scheduling problem ; GAMS, genetic algorithm ; constraint programming ; heuristics ; local search ; survey ; assembly line ; optimal line balance ; uncertainty ; stability analysis ; suburban roundabout design ; swept path analysis ; geometric parameters ; performance estimation ; capacity assessment ; robotic arm-based batching systems ; scheduling robotic arms ; robotic task-sequencing problem ; real-time decision making ; give-away minimization ; SHOA ; hybrid algorithm ; metaheuristics ; spotted hyena optimizer ; genetic algorithm ; uniform crossover ; OR library ; n/a ; thema EDItEUR::K Economics, Finance, Business and Management::KN Industry and industrial studies::KNT Media, entertainment, information and communication industries::KNTX Information technology industries ; thema EDItEUR::U Computing and Information Technology::UY Computer science
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-03-28
    Description: A change from a consumer society to a sustainable and conserver society must focus on for the welfare of the planet and future generations through balance rather than by maximizing the exploitation of resources. This will bring about further growth as an option for both per capita consumption and the population. Muddled and tepid responses make it clear that the society has not developed a vision of what a truly sustainable society looks like. It is essential to bring awareness to the possibility of creating a sustainable society which will incorporate sustainable development goals (SDGs) to generate a future with more possibilities. In order to move towards a sustainable society, it is vital to provide the highest standard of wellbeing, from an environmental, human, and economic perspective. We can contribute by providing technical and scientific studies that can be accessed freely and implemented by all. These works cover the important parameters that can be addressed to achieve sustainability, such as being energetically sustainable, resource-sustainable, environmentally sustainable, fiscally sustainable, and socially sustainable.
    Keywords: corporate social responsibility ; corporate social responsibility disclosure ; organizational performance ; public sector scorecard ; sustainable process ; industry ; green technology ; effective management ; sustainable society ; scientific research ; lignocellulosic ; organosolv ; lignin ; aggregates ; purity ; concentration ; Fe nanomaterials ; Fe nanoparticles ; ferric ; ferrous ; iron ores ; synthesis methods ; sustainable water treatment ; water treatment residuals ; innovative adsorbent ; heavy metals ; acid mine drainage ; hexavalent chromium ; activated carbon ; adsorption ; anionic and cationic dyes ; palm tree fiber wastes ; recycles ; life cycle assessment ; global warming potential ; acidification potential ; eutrophication potential ; bio-plastic straws ; paper straws ; CI engine ; HHO ; response surface methodology ; prediction ; noise ; smoke ; optimization ; biogas slurry ; ion exchange resin ; ammonia nitrogen ; slow release ; electrospinning ; iron-enriched scaffold ; magnetite nanoparticles ; nanofiber ; PCL scaffold ; liver tissue engineering ; n/a ; thema EDItEUR::G Reference, Information and Interdisciplinary subjects::GP Research and information: general ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences::PSA Life sciences: general issues::PSAF Ecological science, the Biosphere
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-11
    Description: This book brings together all 16 articles published in the Special Issue "Applied Mathematics to Mechanisms and Machines" of the MDPI Mathematics journal, in the section “Engineering Mathematics”. The subject matter covered by these works is varied, but they all have mechanisms as the object of study and mathematics as the basis of the methodology used. In fact, the synthesis, design and optimization of mechanisms, robotics, automotives, maintenance 4.0, machine vibrations, control, biomechanics and medical devices are among the topics covered in this book. This volume may be of interest to all who work in the field of mechanism and machine science and we hope that it will contribute to the development of both mechanical engineering and applied mathematics.
    Keywords: path generation ; dimensional synthesis ; hybrid optimization ; slider-crank mechanism ; hybrid compliant mechanisms ; path analysis ; numerical methods ; elliptic integrals ; kinematics ; Levenberg–Marquardt algorithm ; convergence ; neural networks ; local minima ; optimization ; three-legged parallel mechanism ; compliant mechanism ; flexure-based mechanism ; flexure ; compliant joint ; decoupled motion ; coupled motion ; stiffness ; compliance ; suspension algorithm ; predictive suspension ; land vehicle ; sprung mass ; autoencoder ; aeroengine ; denoising ; GRU ; rotordynamic ; adaptive rejection control ; sinusoidal disturbance ; flexible rotor ; hydrodynamic journal bearing ; six-bar mechanism ; dynamic balancing ; fully Cartesian coordinates ; multiobjective optimization ; differential evolution ; Pareto front ; serial robotic manipulators ; singularity identification ; geometric algebra ; rotor group ; distance to a singularity ; air flow medical sensor ; emergency air flow sensor ; low-cost air flow sensor ; nanostructures ; COVID-19 ; FEM analysis ; biomechanics ; effort mathematical models ; NMR reconstruction ; reverse engineering ; elbow joint ; zipper-coupled tubes ; Miura-ori pattern ; deployable mechanism ; origami inspired design ; smooth sheet attachment ; relative rotation ; jump ; safe basin ; fractal ; heteroclinic bifurcation ; delayed feedback ; helical spring ; vibration ; Frenet trihedral ; dispersion relation ; natural frequency ; approximate entropy ; non-linear systems ; phase space reconstruction ; fault classification ; random forest ; support vector machines ; lateral dynamics ; track parameters ; vehicle mathematical modeling ; safety vehicle index ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-03-30
    Description: This reprint focuses on applications of machine learning models in a diverse range of fields and problems. It reports substantive results on a wide range of learning methods; discusses the conceptualization of problems, data representation, feature engineering, machine learning models; undertakes critical comparisons with existing techniques; and presents an interpretation of the results. The topics within the chapters of the publication fall into six categories: computer vision, teaching and learning, social media, forecasting, basic problems of machine learning, and other topics.
    Keywords: robust matrix factorization ; student grade prediction ; educational data mining ; side information graph ; personal teaching and learning ; deep multi-target prediction ; Felder–Silverman learning style ; adaptive e-learning systems ; artificial neural network ; deep learning ; transfer learning ; student performance prediction ; Machine learning analysis ; sentence modeling ; topic analysis ; cross referencing topic ; machine learning ; classification ; preprocessing ; instance selection ; data mining ; predictive analytics ; sales ; performance measurement ; human resources ; rumor refuter ; nature language processing ; XGBoost ; feature analysis ; Bitcoin ; higher order neural network ; volatility forecasting ; hybrid models ; warehouse optimization ; genetic algorithms ; crossover ; construction productivity ; construction safety ; synthetic data ; tracking ; academic performance ; course grades ; grade point average ; prediction ; undergraduate ; cloud detection ; superpixel segmentation ; convolutional neural networks ; support vector machines ; machine learning algorithms ; multiple linear regression ; SVM ; management ; social network services ; image representation ; local features ; autoencoder ; convolutional neural network ; user generated content ; sentiment analysis ; keyword extraction ; text representation ; sampling ; TripAdvisor ; adaptive camouflage ; convolutional neural network (CNN) ; k-means ; object detection ; image completion ; saliency detection ; social media ; micro-blogs (Twitter) ; towards recommending influencers based on topic classification ; investigation framework ; comparison of various techniques for topic classification ; cost-benefit function ; partial differential equations ; physics-informed neural network ; wave equation ; KdV-Burgers equation ; KdV equation ; neural network ; cyclical learning rate ; remote sensing ; scene classification ; backscatter data ; lidar ceilometer ; weather detection ; online taxi-hailing demand ; backpropagation neural network ; extreme gradient boosting ; real-time prediction ; climate zone ; climate change impact ; Jhelum River Basin ; Chenab River Basin ; support vector machine ; decision tree ; large-scale dataset ; relative support distance ; support vector candidates ; answer set programming ; non-deterministic automata induction ; grammatical inference ; geopolymer concrete ; deep neural network ; ResNet ; compressive strength ; fly ash ; sleep apnea ; airflow signal ; Gaussian Mixture Models (GMM) ; cyber security ; vulnerability detection ; word embedding ; drifter trajectory ; evolutionary computation ; NCLS ; stock performance ; earning rate ; volatility ; heatwaves ; big data ; random forest regression model ; semi-regression ; early prognosis ; interpretation ; COREG algorithm ; cascaded classifier ; computer vision ; construction site management ; consumer classification ; over-the-top ; time-aware classification ; code auto-completion ; GPT-2 model ; advanced design methods ; mass operator ; structural stress ; live prediction ; vibration test ; genetic programming ; parsing expression grammar ; BiLSTM ; BERT ; NLP ; context-aware ; LDA ; LSTM ; crowdfunding ; project recommendation system ; optimization ; weather nowcasting ; deep neural networks ; autoencoders ; Principal Component Analysis ; learning classifier systems ; anticipatory classifier systems ; reinforcement learning ; OpenAI gym ; healthcare ; COVID ; time-series predictions ; ARIMA ; Prophet ; GRNN ; n/a ; thema EDItEUR::K Economics, Finance, Business and Management::KN Industry and industrial studies::KNT Media, entertainment, information and communication industries::KNTX Information technology industries ; thema EDItEUR::U Computing and Information Technology::UY Computer science
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-04-05
    Description: The present reprint contains all of the articles accepted and published in the Special Issue "Probability and Stochastic Processes with Applications to Communications, Systems and Networks" from the MDPI Mathematics journal. This Special Issue is devoted to probability, statistics, stochastic processes and their different applications in system and network analysis. The Special Issue includes works related to the analysis and applications of different queuing models, which begin with general approaches in modeling queuing systems and networks; an analysis of probabilistic and statistical methods in telecommunication; an asymptotic analysis of queuing networks in the condition of a large load; general complex networks and their structures, e.g., topology and graph theory; mathematical methods and models in smart cities; exclusive statistical methods, such as statistical estimates in bio/ecology, medicine and neural networks; and studies that estimate parameters in complex technical systems, etc. We hope that the scientific results collected in this reprint will help foster future research related to probability, stochastic processes and their applications.
    Keywords: acyclic digraph ; maximal flow ; minimal cut ; minimal arc cover ; bipartite digraph ; decision-making ; expert assessments ; pairwise comparisons ; risk ; smart expansive system ; uncertainty ; vector compression method ; non-homogeneous Markov systems ; asymptotic behavior ; rate of convergence ; noisy threshold group testing ; defective samples ; number of tests ; bounds ; COVID-19 ; cyber-attack detection ; deep machine learning ; smart power grid ; data processing ; unavailability ; imperfect repair ; failure-based replacement ; renewal theory ; optimization ; batch service ; roots ; discrete-time queue ; discrete renewal theory ; finite buffer capacity ; large outliers ; arrays of observations ; complex systems ; digraphs ; queues ; bulk service ; multi-server ; Markov chain ; quorum ; k-out-of-n system ; dependent failures ; order statistics ; reliability characteristics ; sensitivity analysis ; n/a ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::P Mathematics & science
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-04-05
    Description: Transportation, logistics, and supply chain systems and networks constitute one of the pillars of modern economies and societies. From sustainable traffic management in smart cities or air transportation to green and socially responsible logistics practices, many enterprises and governments around the world have to make decisions that affect the efficiency of these complex systems. Typically, optimization algorithms are employed to deal with these challenges, and simulation approaches are utilized when considering scenarios under uncertainty. However, better results might be achieved by hybridizing both optimization algorithms with simulation techniques to deal with real-life transportation, logistics, and SCM challenges, which often are large-scale and NP-hard problems under uncertainty conditions. Hence, simheuristic algorithms (combining metaheuristics with simulation) as well as other simulation optimization approaches constitute an effective way to support decision makers in such complex scenarios. This reprint presents a collection of selected articles on simulation optimization in transportation, logistics, and supply chain management. The reprint is strongly connected to the topics covered in the Winter Simulation Conference (WSC) track on logistics, transportation, and SCM, which includes a stream in simheuristic algorithms as well.
    Keywords: omnichannel retail stores ; vehicle routing problem ; pick-up and delivery ; biased-randomized heuristics ; simheuristics ; scheduling ; uncertainty ; discrete event simulation ; hybrid flow shop ; scrap ; local search ; tabu search ; machine qualifications ; clustering ; shortest processing time ; maritime transportation ; liner network design ; synchronization ; weather uncertainty ; optimization simulation ; discrete-event simulation ; simulation-based optimization ; assignment problem ; neighborhood search ; warehouse ; nonlinear-flight-mechanics ; neural networks ; guidance, navigation, and control ; machine learning ; model ; matlab-simulink ; stochastic project scheduling ; genetic algorithm ; composite priority rules ; agent-based simulation ; horizontal cooperation ; e-groceries ; optimization ; simulation ; logistics ; distribution networks ; container terminal ; meta-heuristic ; horizontal transportation ; hyper-parameter optimization ; hybrid modeling ; system dynamics ; facility location Problems ; Monte Carlo simulation ; automated parcel lockers ; last-mile delivery ; location routing problem ; heuristics ; fuzzy logic ; dockless bike-sharing system ; Markovian queueing network ; relocation ; unequal demand ; bic Book Industry Communication::K Economics, finance, business & management::KN Industry & industrial studies::KNT Media, information & communication industries::KNTX Information technology industries ; bic Book Industry Communication::U Computing & information technology::UY Computer science
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-11
    Description: This Special Issue presents an extract from the reality of smart agriculture, where the combination of modern technologies, innovative solutions, and sustainable approaches to food production classifies this part of science as highly interdisciplinary, multifaceted, and technologically advanced. The need to increase productivity, optimize natural resources, and minimize environmental impact requires new approaches. In this context, smart agriculture is emerging as a solution that combines technology, data, and science to achieve sustainable, efficient, and innovative food production. This Special Issue introduces the field of smart farming, which encompasses a range of advanced technologies. The use of these tools allows for the monitoring and optimization of crop conditions, precise fertilization, the minimization of water and energy usage, and the improvement of crop quality and quantity. In addition, plant monitoring systems are described, which, by means of sensors and data analysis, provide farmers with valuable information about plant health, soil moisture, temperature, and other factors affecting crop growth. A significant part of this monograph deals with the automation of agricultural processes, where robots and machines undertake tasks with high precision and accuracy, contributing to the farmer’s efficiency. This Special Issue aims not only to provide an understanding of smart agriculture but to also inspire the reader to think about the future of agriculture and the ways in which modern food production methods can be improved.
    Keywords: recirculating aquaculture system ; variable-flow regulation model ; circulating pump-drum filter linkage working technique ; machine learning methods ; gene algorithm support vector machine ; controlled environment agriculture ; digital twin ; productivity ; architecture ; optimization ; NDVI ; image processing ; SURF ; SIFT ; SVM ; BP algorithm ; performance ; sweet pepper ; deep neural network ; sprouts ; stimulation with a pulsed magnetic field ; micro and macro components ; ICP-OES ; ground pressure ; paddy soil ; seeding skateboard ; internet of things ; wireless measurement system ; calcium ; magnesium ; phosphorus ; potassium ; copper ; iron ; manganese ; sodium ; zinc ; wild leafy vegetables ; real-time kinematic (RTK) ; precision agriculture ; ISO standard ; global positioning system (GPS) ; GLONASS ; agricultural tractor ; Korean ginseng ; root-rot-disease ; plant segmentation ; deep learning ; Spodoptera frugiperda ; convolutional neural network ; corn insect ; electrical fields ; magnetic fields ; high-voltage electric field ; growth of fruits ; ripening of fruits ; shelf life of fruits ; fungicide resistance ; PCR ; broad-spectrum fungicides ; Fusarium solani ; toxicity ; asymmetric machine-tractor unit ; motion ; stability ; resistance coefficients ; amplitude-frequency characteristic ; phase-frequency characteristic ; quality parameters ; firmness ; total soluble solid ; titratable acidity ; dry matter ; respiration rate ; apple fruit ; model predictive control ; energy management system ; renewable energy ; smart irrigation ; agriculture 4.0 ; maize bulk ; kernel breakage ; vertical pressure ; deformation ; heat production ; sustainable ; agriculture ; rural ; mobile internet technology ; bivariate probit model ; agricultural modernization ; Pakistan ; wheat ; smart ; Zea mays ; stalk diseases ; crop rotation ; stubble ; suppressive soils ; biomass combustion ; broadleaved tree ; pulsed electric field ; calorific value ; UV-C radiation ; stress response ; mechanical properties ; stimulation ; potato tuber ; CFD (Computational Fluid Dynamics) ; terminal velocity ; winnowing machine separation ; chili pepper harvester ; water and fertilizer integration ; pH adjustment ; BP-PID-Smith algorithm ; estimated compensation ; convolutional neural networks ; MATLAB ; hybrid system ; mobile application ; aeration ; airflow resistance ; pore volume ; semi-empirical modelling ; self-compaction ; spatial and temporal ; energy ; environmental contamination ; lettuce ; life cycle assessment ; winter wheat ; leaf greenness index (SPAD) ; protein ; photosynthesis ; nitrogen ; smart agriculture ; weed management ; crop productivity ; computer vision ; analytical procedure ; forklift truck ; interchangeable equipment ; static stability assessment ; typical meteorological sequence ; typical meteorological week ; wastewater treatment ; high-rate algae pond ; solar irradiance ; Finkelstein-Schafer statistics ; southern rice ; threshing loss ; fuzzy PID ; adaptive algorithm ; hilly mountainous areas ; rapeseed pod ; surface area measurement ; 3-D measurement ; side area of oblique cylinders ; rapeseed pod seed testing machine ; n/a ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-03-07
    Description: This Special Issue reprint is dedicated to presenting open and challenging issues in earthquake engineering. It consists of 29 peer-reviewed papers that cover a broad range of subjects and applications related to the seismic assessment and design of structures. Based on advanced computational, analytical, numerical, and experimental approaches novel results and discussions are presented. Within this context, the first studies of this issue/reprint are focused on providing an insight into the seismic performance of structures taking into account significant engineering components that still have not been fully addressed. Subsequently, there are studies with new strategies to improve the effectiveness of the dampers on the seismic mitigation performance of structures. Concerning performance-based earthquake engineering, new approaches in the seismic fragility assessment of structures are introduced. Furthermore, new innovative types of reinforced steel for the seismic design and assessment of RC structures are analytically and experimentally evaluated. The seismic performance of retrofitted structures is also addressed, while analytical modeling tools that can effectively capture the seismic behavior of substandard RC structural elements are introduced. Some other papers provide experimental results to evaluate and/or validate the structural performance of elements, such as anchors, connectors, and nuclear components. Finally, this issue/reprint also incorporates modified methodologies and identification techniques to improve seismic analysis methods in the field of structural engineering.
    Keywords: non-linear dynamic analysis ; seismic response ; vertical component ; acceptance criteria ; steel buildings ; Impulsive Semi-Active Mass Damper ; frequency ratio ; mass ratio ; structural displacement ; maximum roof displacement ; plastic hinge region ; smooth reinforcement ; M/φ characteristics ; atypical cross-section ; post-installed anchor ; structural performance evaluation ; dynamic load protocol ; shear ; pull-out ; cracked concrete ; seismic ; bridge ; near-fault vertical earthquake ; multiple separations ; seismic excitation period ; vertical excitation amplitude ; bending damage ; axial compression failure ; seismic isolation ; laminated rubber bearing ; lead rubber bearing ; shaking table test ; nuclear facility component ; beyond design basis earthquake ; LRB design ; seismic performance ; seismic isolation frequency ; dual-phase reinforcing steel ; earthquake-resistant design ; Tempcore reinforcing steel ; reinforced concrete frames ; seismic analysis ; pushover analysis ; setbacks ; earthquake ; damage index ; seismic evaluation performance ; damage distribution ; dam pier ; reinforced concrete (RC) ; reinforced polymer cement mortar (RPCM) ; SRS method ; seismic response analysis ; FEM ; reinforcement effect ; upgrading old RC structures ; shear retrofit ; T-beams ; CFRP strips ; anchoring devices ; nonlinear response time history analysis ; reinforced concrete shear wall structure ; modal-based ground motion selection ; frequency contents combination in the time domain ; dominated mode ; RC structure ; structural pounding ; probabilistic seismic assessment ; fragility curves ; global and local EDPs ; linear and bilinear PSDMs ; PSDM’s assumptions ; nonlinear dynamic analyses ; Eurocode 8 ; concrete ; anchor bolt ; pull-out strength ; SPH method ; masonry infill panels ; torsional behavior ; incremental dynamic analysis ; collapse fragility curve ; damage measure ; steel structure ; buckling-restrained brace ; cumulative damage ; multi-hazard ; wind ; inelastic seismic analysis ; nuclear metal component ; design-basis earthquake ; beyond-design-basis earthquake ; plastic strain ; strain gauge ; Chaboche kinematic hardening model ; Voce isotropic hardening model ; strain gauge rosettes ; principal strain ; RC isolated continuous girder bridge ; the copula function ; seismic fragility analysis ; near-fault ground motions ; passive energy dissipation systems ; tuned mass damper ; viscous damper ; friction damper ; optimization ; dynamic response ; seismic site classification ; seismic design codes ; earthquake resistance design ; design criteria ; soil response ; steel structures ; autoclaved lightweight aerated concrete (ALC) panel ; seismic behavior ; finite element analysis ; parametric study ; traffic engineering ; seismic calculation ; loess area ; DBM ; DESANM ; structural irregularity ; incidence angle ; nonlinear time-history analysis ; maximum displacement ; maximum interstory drift ; reinforced concrete ; substandard buildings ; brittle failure ; earthquake loads ; rapid seismic assessment ; IDA ; the cloud method ; IMPA ; MPA ; nonlinear static analysis ; nonlinear dynamic analysis ; fragility curve ; magnetorheological damper ; story drift ratio ; shear force ; bending moment ; torsional vibration ; SPEAR ; RC beam-column joint ; pushover ; beam-column joints ; carbon fiber-reinforced polymer longitudinal bars ; tests ; bond ; cyclic loading ; response controlled systems ; dampers’ combination ; dynamic characteristics ; frequency domain ; nonparametric method ; parametric method ; subspace identification ; n/a ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::P Mathematics & science::PN Chemistry
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-03-30
    Description: As increasingly sophisticated and evasive malware attacks continue to emerge, more effective detection solutions to tackle the problem are being sought through the application of advanced machine learning techniques. This reprint presents several advances in the field including: a new method of generating adversarial samples through byte sequence feature extraction using deep learning; a state-of-the-art comparative evaluation of deep learning approaches for mobile botnet detection; a novel visualization-based approach that utilizes images for Android botnet detection; a study on the detection of drive-by exploits in images using deep learning; etc. Furthermore, this reprint presents state-of-the-art reviews about machine learning-based detection techniques that will increase researchers' knowledge in the field and enable them to identify future research and development directions.
    Keywords: malware analysis and detection ; applied machine learning ; mobile security ; neural network ; ensemble classification ; botnet detection ; deep learning ; Android botnets ; convolutional neural networks ; dense neural networks ; recurrent neural networks ; long short-term memory ; gated recurrent unit ; CNN-LSTM ; CNN-GRU ; Android security ; malware detection ; code vulnerability ; machine learning ; malware ; static analysis ; dynamic analysis ; hybrid analysis ; security ; Monte-Carlo simulation ; reinforcement learning ; adversarial sample ; convolutional neural network ; Histogram of Oriented Gradients ; image processing ; android botnets ; digital forensic ; optimization ; multilayer perceptron ; salp swarm algorithm ; connection weights ; business email compromise (BEC) ; email phishing ; phishing detection ; machine learning (ML) ; systematic literature review ; steganography ; steganalysis ; polyglots ; neural networks ; n/a ; thema EDItEUR::K Economics, Finance, Business and Management::KN Industry and industrial studies::KNT Media, entertainment, information and communication industries::KNTX Information technology industries
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-03-30
    Description: Polymers in the form of films, fibers, nano- and microspheres, composites, and porous supports are promising biomaterials for a wide range of advanced biomedical applications. This Special Issue presents novel studies and new approaches in the field of biomaterials for tissue engineering and drug delivery. It includes seven original research articles and two reviews on biomaterials based on polymeric matrices with various structures, including porous composites, nanofibrous scaffolds, meshes, and hydrogels, which can include micro- or nanoparticles (graphene nanosheets, bioactive glass, and hydroxyapatite and halloysite nanotubes).
    Keywords: bioactive glass ; copper ; polyhydroxyalkanoates ; tissue engineering ; scaffolds ; parastomal hernia ; surgical mesh ; hernia repair ; prevention ; biocompatibility ; n/a ; polylactic acid ; copolymers ; catalysts ; polymer synthesis ; ring-opening polymerization ; medical application ; electrospun nanofibres ; nanocomposites ; polylactic acid (PLA) ; poly(ε-caprolactone) (PCL) ; halloysite nanotubes (HNTs) ; drug release ; release kinetic modelling ; nanoparticles ; rivastigmine ; intranasal application ; optimization ; quality by design ; polymer-ceramic composites ; hydroxyapatite ; collagen ; swelling capacity ; surface roughness ; wettability ; surface free energy ; nonwoven ; cardiovascular stent ; human endothelial cells ; CD31 ; polysaccharide ; carrageenan ; nanoparticle ; pulmonary drug delivery ; carbon-based nanocomposite ; conductive cell substrate ; semi-IPN hydrogel ; graphene nanosheets ; poly(3-hydroxybutyrate-co-3-hydroxyvalerate) ; polyvinyl alcohol ; thema EDItEUR::M Medicine and Nursing
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-04-05
    Description: The development of mathematical models and their optimization are fundamental for the effective resolution of many problems in operational research. In recent years, increased insights into real-world problems have led to the development of new mathematical models and optimization algorithms, contributing to the development of a research area with increasing practical relevance. This Special Issue is dedicated to works at the interface of mathematical modeling, optimization, and operations research, with a special focus on their real-world applications. The interest of the scientific community was significant, with submissions from authors from different countries from five continents, including Australia, China, Egypt, India, Israel, Portugal, Russia, Saudi Arabia, and the United States of America. Ten papers were accepted for publication after thorough peer review by dedicated reviewers with expertise in the relevant fields. We are confident that the papers selected for this Special Issue will attract a significant audience in the scientific community and will further stimulate research involving the development of mathematical models and their optimization.
    Keywords: multi-time generalized Nash equilibrium problem ; projected dynamical system ; river basin pollution problem ; traffic network equilibrium problem ; variational inequality problem ; freight transportation ; heavy-haul railway ; combination scheme ; train timetable ; genetic algorithm ; trapezoidal type demand ; interval-valued inventory costs ; deterioration ; preservation technology ; QPSO algorithms ; mixed integer nonlinear programming ; piecewise linear approximation ; branch and bound ; pairwise comparison ; matrix approximation ; log-Chebyshev metric ; tropical optimization ; consumer preference ; hotel selection ; partial trade credit ; cash discount ; deteriorating items ; EOQ ; COVID-19 ; metaheuristics ; project selection ; portfolio management ; resource ; R&D ; roadmap ; program management ; scheduling ; unrelated parallel machines ; sequence-dependent tasks ; makespan ; statistical analysis ; global optimization ; unconstrained minimization ; numerical approximations of gradients ; meta-heuristics ; stochastic parameters ; conjugate gradient methods ; efficient algorithm ; performance profiles ; comparisons ; testing ; discrete optimization ; dragonfly algorithm ; optimization ; swarm intelligence algorithms ; traveling salesman problem ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::P Mathematics & science
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-03-30
    Description: This reprint comprises a collection of 20 articles that were accepted and published in the Special Issue titled " Recent Advances in Swarm Intelligence Algorithms and Their Applications" of the MDPI journal Mathematics. These articles cover a wide range of topics related to swarm intelligence algorithms and their theories. The topics include improvements in algorithm mechanisms, fusion algorithms, multiobjective optimization, and the optimization of large-scale problems, as well as the application of swarm intelligence in various fields such as engineering optimization problems, vehicle swarm motion, viscoelastic Maxwell-type DVA, and deep learning. It is hoped that this reprint will be helpful for scholars engaged in the field of swarm intelligence and also suitable for researchers interested in staying updated with the latest advancements in swarm intelligence algorithms and their applications. Nowadays, swarm intelligence is closely intertwined with various aspects of life. This reprint aims to provide readers with an understanding of these developments and further expand the application boundaries of such algorithms.
    Keywords: preference incorporation ; ant colony optimisation ; grey wolf optimisation ; interval outranking ; multi-criteria decision analysis ; swarm intelligence algorithms ; piecewise linearization ; optimization ; parameter tuning ; approximation ; experimental comparison ; graph convolutional network ; relation extraction ; machine learning ; natural language processing ; metaheuristic algorithms ; Whale Optimization Algorithm ; HBA ; radial distribution systems ; power loss ; sensitivity analysis ; DG optimal allocation ; voltage deviation ; capacitor banks ; electricity market ; optimal bidding ; Harris Hawk Optimization ; multi layered neural network ; bi-level optimization ; strategic bidding ; ground-penetrating radar (GPR) ; cavity morphology recognition ; few-shot learning (FSL) ; deep learning (DL) ; relation network (RelationNet) ; unmanned aerial vehicle swarm ; antenna array ; near-field beamforming ; array element position error compensation ; spatial area division ; economic load dispatch ; pigeon-inspired optimizer ; oppositional-based learning ; swarm intelligence algorithm ; oppositional-based pigeon-inspired optimizer ; tunicate swarm algorithm ; chaotic mapping ; Lévy flight strategy ; benchmark test functions ; engineering design problems ; meta-heuristic ; large-scale agents ; attack and defense ; multi-population mean-field game ; high-dimensional solution space ; neural networks ; bat algorithm ; hybrid strategy ; energy harvesting ; NOMA ; cognitive relay network ; multimodal optimization ; multiple optima ; partition-based random search ; niching ; global optimization problems ; moth-flame optimization ; premature convergence ; population diversity ; grey wolf optimization ; swarm intelligence ; real world application ; spiking neural P system ; AEC system ; LMS ; neuromorphic architecture ; FPGA ; Harris hawks optimization ; elite opposition-based learning ; Sobol sequence ; nonlinear weight ; Gaussian walk learning ; particle swarm optimization algorithm ; dynamic vibration absorber ; Maxwell-type ; inerter ; negative stiffness ; chaotic-based PPE algorithm ; meta-heuristic algorithm ; chaotic maps ; Mahjong ; differential evolution ; deficiency number ; combinatorial optimization ; reinforcement learning ; multi-agent reinforcement learning ; self play ; population play ; n/a ; thema EDItEUR::K Economics, Finance, Business and Management::KN Industry and industrial studies::KNT Media, entertainment, information and communication industries::KNTX Information technology industries ; thema EDItEUR::U Computing and Information Technology::UY Computer science
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-08-08
    Description: Applied computing and artificial intelligence methods have attracted a growing interest in recent years due to their effectiveness at solving technical problems. Recent developments in applied mathematics have largely led to benefits for industrial tasks in different fields, including the aerospace industry, manufacturing, transportation, energy, robotics, materials, informatics, etc. The objective of this Special Issue is to present advanced methods in applied computing and artificial intelligence to address the practical challenges in the related areas. The response of the scientific community has been remarkable, and a large number of papers have been submitted. After a careful peer-review process, 22 high-quality papers have been accepted and published. It is hoped that the papers will have an impact on international scholars in this field and promote further remarkable research in this area.
    Keywords: scheduling ; delivery times ; learning effect ; common due date ; slack due date ; different due date ; similitude ; scaling relationships ; dual-rotor system ; bolted joint ; dynamic characteristics ; parameter identification ; optimization ; hybrid algorithm ; JAYA ; differential evolution ; convolution operation ; intelligent graphic design ; brightness feature ; traditional engraving graphics ; fault diagnosis ; domain adaptation ; noisy label ; deep learning ; convolutional neural network ; rotating machine ; cuckoo search ; adaptive method ; spatial compression ; photovoltaic model ; integrated control and estimation ; adaptive neuro fuzzy ; noise ; uncertainty ; mathematical model ; motor power curve ; sucker rod pump ; due window ; deteriorating job ; delivery time ; earliness ; tardiness ; number theory ; Collatz conjecture ; landslide displacement prediction ; local mean decomposition ; bidirectional long short-term memory ; maximal information coefficient ; single-machine scheduling ; aging effect ; group technology ; athlete signal processing ; balance control ability ; multi-headed self-attention mechanism ; sandwich plate ; graphene nanoplates ; vibration ; rotating ; porosity ; remaining useful life prediction ; transformer ; random forest ; engineering geology ; soil consolidation ; excess pore water pressure ; physics-informed neural network (PINN) ; abstractive text summarization ; semantic graph ; semantic graph embedding ; Arabic text summarization ; autonomous vehicle ; prognostic health management ; sensor-based fault detection ; data-driven approaches ; perception sensors ; composite materials ; Convolutional AutoEncoder (CAE) ; delamination ; mechanoluminescent (ML) sensor ; non-contact sensing ; structural health monitoring ; covariance matrix estimation ; shrinkage transformations ; rotation-invariant estimator ; portfolio optimization ; similarity ; plagiarism ; semantic ; SRL ; fuzzy labeling ; classification ; DeepPCANet ; diabetic retinopathy ; medical imaging ; PCA ; AutoML ; NAS ; n/a ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::P Mathematics & science
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-11
    Description: Hazardous artificial contaminants are molecules of inorganic and organic nature (pharmaceuticals, food sources, heavy metals, dyes, personal care products, detergents, flame retardants, cosmetics, and pesticides) with potential toxicological effects on human health and the environment (air, water, and soil) due to their ubiquity at trace levels. These products could be bio-persistent during conventional treatment processes; accordingly, the adoption of proper and innovative technologies is necessary for the removal of these hazardous, persistent chemicals before their release into the environment. The aim of this reprint, entitled “Innovative Materials and Processes for the Removal of Biopersistent Pollutants”, was to collect studies devoted to the recent progress and new perspectives in the treatment and removal of hazardous artificial contaminants in the air, soil, and water supply.
    Keywords: photo-catalysis ; TiO2 ; azo dye ; kinetic study ; hydraulic and hydrodynamic parameters ; water caltrop husk ; CO2 activation ; mesoporous activated carbon ; methylene blue ; adsorptive removal ; kinetic modeling ; internal microelectrolysis ; Fe-Cu material ; phenol ; wastewater treatment ; coking wastewater ; TiO2 nanoparticles ; photocatalysis ; landfill leachate ; aged waste reactors ; environmental regulation ; governance synergy ; industrial green technology progress ; mediating effect ; digestate ; endocrine-disrupting chemical ; metribuzin ; boscalid ; bisphenol A ; octylphenol ; xenoestrogen ; sorption kinetics ; sorption isotherm ; desorption ; silane coupling agents ; biochar ; hydrophobic modification ; landfill cover ; ANOVA ; heavy metals ; second-degree function ; soybean biomass ; waste ; Artificial Neural Networks ; biosorption ; Differential Evolution ; optimization ; soybean waste ; sudden water pollution events ; digital emergency plan ; emergency response ; emergency plan management ; knowledge visualization ; decision support system ; n/a ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TQ Environmental science, engineering and technology
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-09-11
    Description: This Special Issue presents contributions from biological fields focusing on the identification of underlying principles in living systems, and manuscripts that apply findings obtained from existing systems to modern technologies. We greatly appreciate the time and effort that the Guest Editors devoted to this Special Issue.
    Keywords: biomimetic ; antibiofouling ; surface modification ; physical removal ; wound dressing ; plant-inspired robotics ; artificial Venus flytrap ; motion sequence ; biomimetics ; bioinspiration ; multi-portfolio ; optimization ; swarm algorithm ; beetle antennae search ; stochastic algorithm ; distributed beetle antennae search ; investment ; stocks ; biomimetic synthesis ; Nd2Se3 ; synthetic peptide ; structural characterization ; interface ; bioinspired materials ; stiffness ; strength ; 3D printing ; mechanical testing ; stiff-to-compliant ; gelatin ; gellan ; elastin ; endothelialization ; functionalization ; peptide ; liposome ; ionic liquids ; phase transition ; metallosurfactants ; hydrophobic effect ; outer-sphere electron transfer ; bioinspired ; catechol ; coatings ; multifunctional ; oil spill ; solid margin ; high adhesion ; water channel ; fast water drainage ; protein crystallization ; crystallography ; heterogeneous nucleation ; crystallization strategy ; n/a
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-11
    Description: Surface integrity management is remarkably important when metal alloys are used to manufacture relevant parts. Advanced materials such as titanium, nickel alloys, non-ferrous alloys, or special steels make surface integrity preservation after machining particularly difficult. Consequently, thorough finishing techniques are required to rectify the surface integrity. Engineering surfaces that exemplify the importance of surface integrity control are typically found in the transportation industry. Pieces formed using complex curved surfaces, such as turbine blades or landing gears, and molds and dies for upsetting operations are good examples. These kinds of parts are often manufactured through 3- or 5-axis machining with the aid of successive adjacent passes of hemispherical tools, whereas this ball-end milling strategy allows one to achieve complex surfaces by following the desired shape through NC interpolations generated by a CAM (it also has deep constraints). In this context, processes such as burnishing, honing, plateau-honing, grinding, and shot-peening can contribute to improving the described surfaces in terms of texture, residual stress, and hardness, and are easily maneuverable from a procedural point of view. This Special Issue collected the research results on these kinds of finishing processes, which are very important to the transportation industry.
    Keywords: ball burnishing ; regular reliefs ; surface topography ; austenitic stainless steel ; fatigue life ; t-test ; Bayesian rule ; sandblasting ; precision spheres ; non-contact metrology ; laser scanning ; laser sensors ; accelerometer ; acoustic emission ; natural frequencies ; operational deflection shape ; piezoelectric ; process monitoring ; ultrasonic ; additive manufacturing ; fused filament fabrication ; PEI Ultem 9085 ; postprocessing ; finishing operations ; surface enhancement ; vapor smoothing ; thermal annealing ; abrasive shot blasting ; shot peening ; sensitivity analysis ; honing ; roughness ; tool wear ; material removal rate ; optimization ; desirability function ; mixture design ; finish milling ; chatter ; part quality ; AA2024 floor milling ; finishing processes ; surface integrity ; bearing steel ; residual stresses ; rolling contact fatigue ; slide burnishing ; X6CrNiTi18 stainless steel ; surface roughness 3D ; topography ; microhardness ; residual stress ; positron mean lifetime τmean ; tribological interaction ; stainless steel ; friction coefficient ; vibration-assisted ball burnishing ; tribology ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-03-31
    Description: The present reprint contains all of the articles accepted and published in the Special Issue "Probability and Stochastic Processes with Applications to Communications, Systems and Networks" from the MDPI Mathematics journal. This Special Issue is devoted to probability, statistics, stochastic processes and their different applications in system and network analysis. The Special Issue includes works related to the analysis and applications of different queuing models, which begin with general approaches in modeling queuing systems and networks; an analysis of probabilistic and statistical methods in telecommunication; an asymptotic analysis of queuing networks in the condition of a large load; general complex networks and their structures, e.g., topology and graph theory; mathematical methods and models in smart cities; exclusive statistical methods, such as statistical estimates in bio/ecology, medicine and neural networks; and studies that estimate parameters in complex technical systems, etc. We hope that the scientific results collected in this reprint will help foster future research related to probability, stochastic processes and their applications.
    Keywords: acyclic digraph ; maximal flow ; minimal cut ; minimal arc cover ; bipartite digraph ; decision-making ; expert assessments ; pairwise comparisons ; risk ; smart expansive system ; uncertainty ; vector compression method ; non-homogeneous Markov systems ; asymptotic behavior ; rate of convergence ; noisy threshold group testing ; defective samples ; number of tests ; bounds ; COVID-19 ; cyber-attack detection ; deep machine learning ; smart power grid ; data processing ; unavailability ; imperfect repair ; failure-based replacement ; renewal theory ; optimization ; batch service ; roots ; discrete-time queue ; discrete renewal theory ; finite buffer capacity ; large outliers ; arrays of observations ; complex systems ; digraphs ; queues ; bulk service ; multi-server ; Markov chain ; quorum ; k-out-of-n system ; dependent failures ; order statistics ; reliability characteristics ; sensitivity analysis ; n/a ; thema EDItEUR::M Medicine and Nursing
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-03-07
    Description: This reprint includes research papers on different disciplines related to composites. It contains research related to new topics such as nanotubes, fibres, admixtures added in cement and concrete. Additionally self-healing and self-sensing issues are presented. Environmental, and thermal-related topics are also discussed. Studies related to consolidation topics and alkali activation of clays are included. This blend of traditional and modern building materials, all having a common ground, the use of new technologies for improving fresh and harden state properties, make this volume interesting.
    Keywords: single wall carbon nanotubes ; surfactant ; TritonX-100 ; mass of specimens ; compressive strength ; flexural Strength ; bulk density ; ternary cements ; limestone ; siliceous fly ash ; granulated blast furnace slag ; concrete properties ; concrete durability ; CO2 emission ; detached decorative plasters ; injection grout ; glass microspheres ; reduced density ; stability ; strength ; durability ; clay mortars ; activating solutions ; wetting–drying ; freeze–thaw cycles ; microstructure ; superabsorbent polymer ; steel fibers ; high-performance fiber reinforced concrete ; digital image correlation ; autogenous shrinkage ; tensile behavior ; nano-calcium oxide ; nano-silica ; self-healing ; cement pastes ; curing regime ; gypsum binder ; additives ; light-materials ; porosity ; thermal insulation ; cement ; hydrated lime ; HEMC ; mortar ; paste ; hydration ; setting process ; ultrasonic technique ; graphite ; electrical conductivity ; self-sensing ; multi-walled carbon nanotubes ; cement-based materials ; flexural strength ; electrical resistivity ; activation energy ; supplementary cementitious materials ; packing density ; filler effect ; high calcium fly ash ; ladle furnace slag ; limestone filler ; foamed geopolymer ; reinforcing lightweight concrete ; glass fiber composites ; concrete ; thermal properties ; structural properties ; composite modified asphalt binder ; rheological properties ; storage stability ; amorphous poly alpha olefin ; polyphosphoric acid ; application properties ; water retention ; plaster ; cellulose ether ; viscosity ; self-compacting concrete (SCC) ; mix proportion design ; optimization ; experimental verification ; the grey relational analysis ; hook-end steel fiber ; bond performance ; pullout test ; inclination angle ; fiber spacing ; pullout load-slip curve
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-11
    Description: The thermal analysis of materials encompasses a variety of methods used to detect changes in material properties as a function of temperature. Before temperature measurement became routine in all stages of metal and ceramic processing, early metallurgists relied on the color and brightness of hot metal, and glassmakers used viscosity for guidance. Nowadays, techniques of differential thermal analysis (DTA) and differential scanning calorimetry (DSC) routinely yield heat capacities, temperatures, and enthalpies of phase transformations in the temperature range from −150 to 1500 °C. The measurement of any physical property as a function of temperature brings the method into the realm of thermal analysis. This Special Issue provides a sampling of the current use, diversity, and ongoing developments of techniques and approaches in the thermal analysis of materials. It combines contributions solicited by editors that reflect their scientific interests and networks, with generally related submissions received over two years. It contains 16 articles and 1 short review submitted by authors from 10 countries.
    Keywords: aged cable ; pyrolysis ; TG-FTIR ; combustion ; calorimeter ; GCr15 bearing steel ; cementite precipitation ; stress filed ; kinetic analysis ; composite cementitious materials ; copper tailing powder ; graphene oxide ; hydration kinetics ; EN AW-6082 ; AlMgSi alloy ; differential scanning calorimetry ; fast scanning ; scanning rate extension ; indirect measurements ; dissolution ; precipitation ; time-temperature-dissolution diagram ; aluminium composite ; copper composite ; spark plasma sintering ; thermal properties ; powder metallurgy ; intermetallic compound ; temperature-dependent thermal properties ; simultaneous estimation ; optimization ; sensitivity coefficients ; uncertainty analysis ; thermal analysis ; sound velocity ; electrical resistivity ; density ; liquid metals ; calculation of phase diagrams (CALPHAD) ; dual-material lattices ; interferometry ; measurement ; thermal expansion ; spark plasma sintering apparatus ; compressive creep test ; stress exponent ; electric current ; high entropy oxides ; rare earth oxides ; laser melting ; aerodynamic levitation ; phase transition ; melting ; thermodynamics ; water adsorption ; defect structure ; reducibility ; magnesium aluminate spinel ; positrode ; cobaltites ; synchrotron powder diffraction ; X-ray absorption spectroscopy ; ceramics ; chemical expansion ; lifetime ; degradation ; accelerated aging ; polymer ; kinetic models ; industrial thermal insulation ; passive fire protection ; hydrocarbon fires ; thermal conductivity ; TGA ; DSC ; TPS ; soda lime ; carbon dioxide ; anesthesiology ; absorbent ; thermogravimetric analysis ; PXRD analysis ; TGA-DSC ; calcium looping ; CO2 capture ; mineral carbonation ; natural sorbents ; carbonate rock ; serpentine ; levitation ; zirconia ; hafnia ; n/a ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials::TGM Materials science
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-11
    Description: This reprint focuses on state-of-the-art technologies, the latest findings and current challenges in IoT with emphasis on healthcare, transportation, antenna design and disease detection. The included papers cover numerous topics of interest that include:IoT communication protocols;LPWAN for IoT (Sigfox, LoRa, etc.);Antenna design for IoT applications;Large-scale, high-density IoT networks and architectures;IoT applications and multi-sensors for transportation and traffic control;IoT convergence for Smart Health;Machine-learning/deep-learning algorithms for sensing IoT;Machine-learning-based healthcare applications and disease detection using IoT architectures;Applications and examples of use.
    Keywords: antenna impedance matching ; artificial neural network ; deep learning ; input impedance (S11) ; smart grid ; LoRaWAN ; partial discharge ; predictive maintenance ; scalability ; Internet of Things ; COVID-19 sensors ; remote healthcare ; telemedicine ; quarantine monitoring ; IoT wearable device ; IoT ; WSN ; routing ; load balancing ; energy efficiency ; blockchain ; clustering ; authentication ; malicious node detection ; LEACH protocol ; service provisioning ; interplanetary file system ; security ; impedance meter ; RCL-bridges ; portable instrument ; AVR® micro-controller ; low-cost ; internet of things ; PKCs ; prime field ; modular inversion ; BEEA ; modular addition and subtraction ; SPA ; ADP ; FPGA ; cable diagnostics ; smart grid monitoring ; health cable monitoring ; technical cable coefficient ; chicken swarm optimization ; genetic algorithm ; energy optimization ; healthcare architectures ; Health 4.0 ; lightweight privacy ; cryptography ; sensors ; smart health ; surgical practice ; Internet of Surgical Things ; Internet of Things (IoT) ; smart campus ; IoT gateway ; cluster ; optimization ; self-sovereign identity ; IoMT ; privacy ; sewer network ; wireless sensor network ; combinatorial optimization ; mixed integer programming ; greenhouse gas ; sustainable logistics ; last-mile emission ; supply chain ; LPWANs ; industrial Internet of Things ; mesh networks ; wide area networks ; edge intelligence ; healthcare and wellness ; piezoelectric sensors ; multi-sensor ; anomaly detection ; LoRa ; transceiver ; modules ; LPWAN ; IoT devices ; wireless sensor networks ; IoT applications ; small patch antenna ; SigFox ; consensus mechanisms ; secure data management ; data storage ; power consumption ; Hypertext Transfer Protocol (HTTP) ; Message Queue Telemetry Transport (MQTT) ; long-term monitoring ; NodeMCU ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-11
    Description: This reprint focuses on the forming technologies and mechanical properties of advanced materials. Plastic working is the most efficient and an important manufacturing technology in today's industry. Plastic working technologies enable giving the material the appropriate functional properties, which depend on the rheological conditions of the plastic forming process and on the thermoplastic treatments carried out during the forming process. Metal processing is one of the most important sectors of the economy. In addition to the continuous improvement in the existing methods of plastic working, new technologies are also implemented, the purpose of which is to reduce the energy consumption of processing and the modernization of technological machines and tools. The subjects of research articles published in this reprint are multidisciplinary, including friction and lubrication in sheet metal forming, the single-point incremental forming of polymeric and lightweight metallic sheets, the optimization of shear spinning parameters and the cutting performance of cutting tools, the numerical and experimental analysis of titanium sheet forming, the mechanical and structural properties of titanium alloy subjected to impact-oscillatory loading, macro- and microdeformation characteristics of Ti-2.5Al-1.5Mn foil, and the optimisation of the thermomechanical process of nickel-based oxide-dispersion-strengthened superalloys.
    Keywords: superalloy ; design of experiments ; 3D scanning ; statistical optimisation ; cutting performance ; matching combination ; dynamic change process of performance indicator ; dynamic evaluation method ; comprehensive evaluation ; friction ; incremental sheet forming ; lubrication ; microstructure ; sheet metal forming ; single-point incremental forming ; SPIF ; single point incremental forming ; sheet forming ; hardness ; ANN ; relative importance (RI) ; foil forming ; size effect ; digital image correlation ; concentrated deformation ; critical t/d value ; sheet titanium forming ; Grade 2 titanium ; environmentally benign lubricant ; numerical analysis ; medical instruments ; nickel-based ODS superalloys ; consolidation ; strengthening ; coefficient of friction ; deep drawing ; steel sheet ; titanium alloy ; dynamic non-equilibrium process ; mechanical properties ; fracture ; polymer incremental forming ; polyamide ; polyethylene ; statistical analysis ; force minimizing ; severe plastic deformation ; equal channel angular pressing ; biodegradable Mg-Zn-Zr alloy ; ultrafine-grained structure ; corrosion behavior ; Response Surface Methodology ; genetic algorithm ; optimization ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-11
    Description: The pressure upon natural resources and the increasing awareness of the necessary transformation of the global food system are driving the quest of both academia and industry towards more sustainable approaches. Sustainability in the agro-food sector begins with the valorization of food industry waste and side streams, products with an extremely high intrinsic value but often discarded because unfit for further processing that meet consumers expectations. Apart from their use as feed, a more practical solution responding to the modern vision of circular economy must be sought. Indeed, several processes can guarantee that the potential of food industry by-products is fully unleashed, generating high-value ingredients while ensuring nutritional quality. In this framework, this Special Issue included the most recent advances in the valorization of food by-product (of both animal and plant origin), from extraction to bioprocessing, including their application in a variety of food-related industries throughout the entire food supply chain.
    Keywords: Newhall navel orange ; dietary fiber ; structural properties ; functional properties ; L-arabinose ; sucrose ; fat ; starch ; glucose ; insulin ; GLP-1 ; GIP ; healthy adults ; olive pomace ; natural phenolic compounds ; antioxidant activity ; macroporous absorbing resin ; hydroxytyrosol ; litchi pomace ; monosaccharide composition ; structure ; prebiotic activity ; Morus alba leaves ; phenolic compounds ; Box-Behnken ; HPLC-MS ; ultrasound-assisted extraction ; chufa ; HPLC-ESI-TOF-MS ; antioxidant ; cookies ; date seed ; flavonoids ; polyphenols ; degree of hydrolysis ; milk protein concentrate ; molecular mass distribution ; sodium caseinate ; turbidity ; viscosity ; whey protein ; foaming properties ; fish skin gelatin ; pea protein ; interfacial properties ; Turbiscan Tower ; CLSM ; sonication-assisted extraction ; solvent extraction ; Punica granatum L. ; pomegranate peels ; pomegranate seeds ; antimicrobial activity ; phytotoxicity ; U. pinnatifida ; traditional cooking methods ; quality characteristics ; color ; texture ; bioactive nutrients ; asarinin ; solid acid catalyst ; characterization ; optimization ; physicochemical properties ; dairy proteins ; caseins ; plant proteins ; protein beverages ; acid gel ; colloidal stability ; pulsed electric field ; pulse generation ; milk proteins ; protein structure ; Aloe vera ; anthraquinones ; stability ; aloin ; aloe-emodin ; rhein ; spray drying ; freeze drying ; processing temperature ; pH ; microencapsulation ; storage stability ; carotenoid degradation ; gum arabic ; vegetable fat ; starch-based film ; degradability ; active packaging ; intelligent packaging ; mechanical properties ; barrier properties ; freshness indicator ; time-temperature sensor ; silver carp ; collagen ; by-products ; rheological properties ; fried oil ; adsorbent ; lignocellulosic biomass ; fatty acid ; food waste ; oil regeneration ; oil quality ; sustainability ; n/a ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology ; thema EDItEUR::K Economics, Finance, Business and Management::KN Industry and industrial studies::KNB Energy industries and utilities
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-11
    Description: Advanced fluid machinery is the key component in the sustainable development of energy and water resources, including various transport processes for liquids. Where fluid flows, fluid machinery works. Therefore, fluid machinery occupies an important position in the social economy. This Special Issue, entitled “Optimization and Flow Characteristics in Advanced Fluid Machinery”, provides a platform for the sharing of knowledge among researchers in the field of fluid machinery, and includes theoretical analyses, numerical simulations, and experimental studies. This Special Issue covers a wide range of disciplines as follows: (1) optimization of advanced fluid machinery using different advanced algorithms; (2) flow characteristics of advanced fluid machinery using numerical and experimental methods; (3) vibration and noise of advanced fluid machinery; (4) fluid–structural coupling analysis of advanced fluid machinery; (5) cavitation and multi-phase flow of advanced fluid machinery; (6) simulation and optimization of new energy systems; and (6) other aspects of fluid machinery.This Special Issue contains 27 manuscripts, including 1 Editorial and 26 scientific articles. We would like to thank all of the authors and peer reviewers for their valuable contributions to this Special Issue.
    Keywords: dishwasher pump ; pressure pulsation ; rotor–rotor interaction ; impeller speeds ; double-tongue volute ; experiment ; transient characteristics ; self-priming pump ; numerical simulation ; hub radius ; multistage submersible pump ; bowl diffuser ; parametric design ; secondary flow ; vortex pump ; blade type ; internal flow structure ; circulating flow ; mixed flow pump ; optimization platform ; surrogate model ; entropy generation ; MIGA ; slurry pump ; solid–liquid flow ; hydraulic performance ; wear characteristic ; hydraulic support ; position control ; pressure detection ; flow integration ; switch control ; high-pressure jet ; high-speed photography ; cavitation ; nozzle ; POD ; LNG submerged pump ; numerical calculation ; centrifugal impeller ; blade load distribution ; particle image velocimetry (PIV) ; internal flow patterns ; the mean absolute flow angle ; tip leakage vortex (TLV) ; secondary tip leakage vortex (S-TLV) ; axial flow pump ; vortex ; leakage jet ; axial-flow pump as turbine ; tip clearance ; entropy production ; loss distribution ; high-pressure water jet ; structural parameter ; interaction ; structure optimization ; bidirectional axial flow pump ; bidirectional operation ; hydrodynamic characteristics ; spectrum ; aerostatic porous journal bearing ; compressible flow ; theoretical modeling ; numerical solution ; nominal clearance ; gas polytropic index ; diving tubular pump ; energy loss ; surface response method ; pump hydraulic performance ; OpenFOAM ; harmonic balance ; spectral methods ; turbomachinery ; compressible flows ; fourier series ; vertical axial-flow pumps ; fluid–solid coupling ; blade ; equivalent force ; deformation ; Miller cycle ; EIVC ; PIV ; CFD ; RANS ; turbulence ; marine propeller ; erosion ; liquid penetrant testing ; color edge detection ; vertical axial-flow pump device ; unsteady pressure signal ; peak to peak ; pressure pulsation intensity ; aviation liquid cooling pump ; pump performance ; organic coolant ; multi-objective optimization ; machine learning ; skew and sweep ; pre-swirl rotor-stator cavity ; nozzle pressure ; core swirl ratio ; flow rate coefficient ; moment coefficient ; axial thrust coefficient ; high-specific-speed centrifugal pump ; number of impeller blades ; large flow condition ; large axial flow pump system ; start-up characteristics ; safety auxiliary facilities ; model experiment ; fluid machinery ; optimization ; flow characteristics ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-09-11
    Description: Today’s world demands unique and specific materials for precise engineering applications. If there exist limitations in changing or altering materials, then the only option is to improve the existing ones. This Special Issue of Coatings, “Research Progress in Thermal Layering and Deposition”, explores the various techniques related to surface coatings and similar surface modification techniques with a wealth of scientific and comparative results to better understand the current state of materials technology. The present volume also revels the opportunities and challenges associated with coatings techniques, and provides a futuristic approach to solutions.
    Keywords: graphene ; ceramics ; epoxy resin ; elastic properties ; vibration technique ; Al359 alloy ; friction stir processing ; friction and wear ; Si3N4 ; eggshell waste ; composite structure ; friction stir spot welding ; dynamic parameters ; static parameters ; fuzzy logic control system ; nanocomposite ; nickel matrix coatings ; titanium coating ; electroless nickel coating ; Ni-P electroless coating ; microwave synthesis ; transition metal dichalcogenide ; graphitic carbon nitride ; coatings ; characterization ; tribology ; wear ; steel substrate ; Al6082 ; chicken bone powder ; walnut shell powder ; rice husk powder ; Taguchi’s L9 orthogonal array ; optimization ; ANOVA ; nanocomposites ; liquid crystals ; mesogenic-phase temperature ranges ; lubricant additives ; tribological property ; n/a ; interface reaction mechanism ; Ni coating ; microstructure ; property ; CMT ; complex concentrated alloys ; cold spray ; adiabatic heating ; solid-state coating ; metallurgical bonding ; mechanical interlocking ; severe lattice distortion ; Johnson–Cook model ; finite element method ; sluggish diffusion ; microstructural evolution ; rail track ; rail wheels ; pin-on-disc ; friction ; contamination ; GTAW ; cladding ; super duplex stainless steel ; FA ; ANN ; dilution ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::P Mathematics & science::PH Physics
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-06-23
    Description: This reprint is focused on the exploitation of natural nanoparticles for cancer diagnosis and treatment. It compiles articles related to exosomes and protein nanocages, but also presents the use of some organic natural compounds in cancer treatment, which have been extensively studied as agents for cancer treatment since their biological nature guarantees a better safety, biocompatibility, and biodegradability profile in comparison to synthetic nanoparticles and drugs. These features are strongly appealing in order to face cancer, where the development of tumor-targeted specific devices and the use of natural compounds could be useful in improving patient compliance.
    Keywords: biomimetics ; bacterial membrane vesicles ; nanoparticles ; drug delivery ; antibiotic therapy ; exosomes ; gemcitabine ; deferasirox ; pancreatic cancer ; chemoresistance ; RRM2 ; RNA interference ; siRNA ; miRNA ; nanocarrier ; luteolin ; vesicles ; irritation study ; optimization ; topical gel ; natural carbon nanodots ; tumor-targeting probes ; biosensing ; cancer theranostic ; toxicity assessment ; fucoidan nanoparticle ; marine polysaccharide ; safety ; antitumor effect ; anti-metastasis ; parenteral administration ; Garcinia mangostana L. ; nanotechnology ; cancer therapy ; ferritin ; cancer ; tumor targeting ; imaging ; buoyancy ; H. pylori ; microparticulate system ; in vivo study ; natural nanoparticles ; natural anticancer compounds ; natural cancer therapies ; novel cancer treatment alternatives ; natural nanocarriers ; chemotherapeutic agents targeted delivery ; n/a ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-11
    Description: The reprint covers some recent advances in active and passive flow control applications. The reader should consider that the present reprint aims to simply introduce some of the many existing flow control applications. In fact, the goal of the editors is to open a door to this rather novel technology and highlight the importance of optimization techniques in AFC applications.
    Keywords: counter-rotating axial fan ; orthogonal experiment ; numerical simulation ; wing angle blade ; evolutionary algorithms ; cultural algorithm ; genetic algorithms ; aerodynamic optimization design ; Hybrid Methods ; Genetic Algorithms ; gradient-based methods ; optimization ; Active Flow Control ; Synthetic Jets ; computational fluid dynamics (CFD) ; active flow control (AFC) ; synthetic jet ; boundary layer ; aerodynamic efficiency ; riblets ; drag reduction ; slip length ; interturbine transition duct ; sweeping rods ; boundary layer transition ; unsteady flow ; flow control ; aerodynamics ; trailing edge flow ; unsteady flow characteristics ; computational fluid dynamics ; plasma actuator ; airfoil ; pre-stall angles ; duty cycle ; burst ; large eddy simulation ; gust load alleviation ; active flow control ; blowing jet control ; circulation control ; CFD method ; cavitation effects ; microtexture ; hydrostatic bearing ; submerged inlet ; large maneuver state ; nested mesh ; total pressure distortion index ; distortion characteristics ; hysteresis effect ; flapping wing ; wavy leading edge ; bionics ; cantilevered stator ; 3D blading ; leakage flow ; secondary flow ; grid-fin ; multi-element configuration ; aerodynamic optimization ; DOE optimization algorithm ; n/a ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-11
    Description: The pressure upon natural resources and the increasing awareness of the necessary transformation of the global food system are driving the quest of both academia and industry towards more sustainable approaches. Sustainability in the agro-food sector begins with the valorization of food industry waste and side streams, products with an extremely high intrinsic value but often discarded because unfit for further processing that meet consumers expectations. Apart from their use as feed, a more practical solution responding to the modern vision of circular economy must be sought. Indeed, several processes can guarantee that the potential of food industry by-products is fully unleashed, generating high-value ingredients while ensuring nutritional quality. In this framework, this Special Issue included the most recent advances in the valorization of food by-product (of both animal and plant origin), from extraction to bioprocessing, including their application in a variety of food-related industries throughout the entire food supply chain.
    Keywords: Newhall navel orange ; dietary fiber ; structural properties ; functional properties ; L-arabinose ; sucrose ; fat ; starch ; glucose ; insulin ; GLP-1 ; GIP ; healthy adults ; olive pomace ; natural phenolic compounds ; antioxidant activity ; macroporous absorbing resin ; hydroxytyrosol ; litchi pomace ; monosaccharide composition ; structure ; prebiotic activity ; Morus alba leaves ; phenolic compounds ; Box-Behnken ; HPLC-MS ; ultrasound-assisted extraction ; chufa ; HPLC-ESI-TOF-MS ; antioxidant ; cookies ; date seed ; flavonoids ; polyphenols ; degree of hydrolysis ; milk protein concentrate ; molecular mass distribution ; sodium caseinate ; turbidity ; viscosity ; whey protein ; foaming properties ; fish skin gelatin ; pea protein ; interfacial properties ; Turbiscan Tower ; CLSM ; sonication-assisted extraction ; solvent extraction ; Punica granatum L. ; pomegranate peels ; pomegranate seeds ; antimicrobial activity ; phytotoxicity ; U. pinnatifida ; traditional cooking methods ; quality characteristics ; color ; texture ; bioactive nutrients ; asarinin ; solid acid catalyst ; characterization ; optimization ; physicochemical properties ; dairy proteins ; caseins ; plant proteins ; protein beverages ; acid gel ; colloidal stability ; pulsed electric field ; pulse generation ; milk proteins ; protein structure ; Aloe vera ; anthraquinones ; stability ; aloin ; aloe-emodin ; rhein ; spray drying ; freeze drying ; processing temperature ; pH ; microencapsulation ; storage stability ; carotenoid degradation ; gum arabic ; vegetable fat ; starch-based film ; degradability ; active packaging ; intelligent packaging ; mechanical properties ; barrier properties ; freshness indicator ; time-temperature sensor ; silver carp ; collagen ; by-products ; rheological properties ; fried oil ; adsorbent ; lignocellulosic biomass ; fatty acid ; food waste ; oil regeneration ; oil quality ; sustainability ; n/a ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TC Biochemical engineering::TCB Biotechnology
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-03-31
    Description: Robotics and intelligent systems are key technologies to promote efficient and innovative applications in the most diverse domains (industry, healthcare, agriculture, construction, mobility, etc.), performing and supporting activities that are not suitable to be performed by humans. Such activities are frequently time-consuming, repetitive tasks with low added value, which are physically demanding and/or dangerous. Nevertheless, robotics and intelligent systems face several scientific and technological challenges related to their integration and interoperability with other systems, safety, flexibility, re-configurability and autonomy. These challenges are especially relevant when robots operate in real unstructured environments and share a workspace with humans and other equipment. This reprint collects research achievements, ideas, and applications regarding advanced intelligent robotic systems, covering diverse technologies and application domains. Generically, the contributions cover optimal path-planning strategies and innovative designs for mobile manipulators, the integration of robotic and intelligent systems, grasping, manipulation, teleoperation, haptics, user experience approaches for collaborative robots, and multi-agent systems.
    Keywords: robot ; manipulator ; robotized workplace ; robotic cell ; optimization ; wear ; motion planning ; trajectory tracking ; mobile manipulator ; joint constraints ; self-collision avoidance ; manipulability ; service robot ; assistant robot ; collaborative robot ; healthcare ; elderly care ; intelligent systems ; COVID-19 ; multi-agent systems ; bigraphs ; design ; verification ; modeling ; non-functional requirements ; robot path planning ; RRT ; midpoint interpolation ; triangular rewiring ; path smoothness ; non-prehensile manipulation ; manipulation planning ; pivoting ; robotics ; mobile manipulation ; large-scale inspection ; wind turbine production ; autonomous navigation ; surface-orthogonal path planning ; intelligent robot ; flexible production ; manipulation ; intelligent control ; User eXperience ; human–robot interaction ; human–robot collaboration ; human-centered design ; augmented reality ; human factors ; omnivehicle ; omnitracks ; Mecanum rollers ; FDM ; simultaneous localization and mapping ; dual lidar inertial odometry ; IMU ; time synchronization ; tight coupling ; impact hammers ; industrial robotics ; haptic teleoperation ; underground mining ; genetic algorithm ; principal component analyses ; standard triangle language ; traveling salesman problem ; trajectory planning ; haptic recognition ; convolutional neural network ; channel attention ; spatial interactive second-order feature ; multiorder feature ; n/a ; thema EDItEUR::M Medicine and Nursing ; thema EDItEUR::M Medicine and Nursing::MK Medical specialties, branches of medicine::MKG Pharmacology
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-11
    Description: In modern times, mechatronic and robotic systems are developing at a faster pace than in the past, and research on novel solutions and applications of such devices are studied in both industrial and academic environments. The second volume of this Special Issue of Applied Sciences aims to disseminate the latest research achievements, ideas, and applications of the modeling and control of mechatronic and robotic systems, with particular emphasis on novel trends and challenges. We invited contributions to this Special Issue on topics including (but not limited to): modeling and control, path and trajectory planning, optimization problems, collaborative robotics, mechatronics, flexible multi-body systems, mobile robotics, and manufacturing applications.
    Keywords: wobble motor ; permeance ; magnetic circuit ; leakage flux ; electropermanent magnet ; force model ; inverse kinematics ; genetic algorithm ; workspace analysis ; multi-fingered anthropomorphic hand ; amphibious robot ; spherical robot ; assistant fin ; buoyancy ; hydrodynamic force ; robot ; crawler ; traction ; kinematics ; EOD Robot ; terrorist attacks ; hybrid control ; state machine ; Festo ; PLC ; friction force ; trout ; fish processing machine ; simulation ; vision based system ; humanoid robots ; robot design ; legged robots ; dynamic model ; harsh environment ; kinematic model ; mecanum wheel ; omnidirectional robot ; robotic platform ; surveillance ; flow-rate estimation ; automatic pouring machine ; extended Kalman filter ; mechatronics ; hysteresis ; advance trajectory control ; piezoelectric ; actuator ; neural networks ; robust control ; MPC ; foot location ; motion planning ; gait transitioning ; deep deterministic policy gradients ; snake manipulator ; data-driven ; accuracy ; 6DoF motion platform ; monitoring system ; crank arm mechanisms ; cable-driven parallel robots ; overconstrained robots ; design ; non-contact operations ; behavior-based ; climber robot ; control ; control architecture ; fault-tolerant ; legged robot ; optimization ; 3D printer ; Cartesian kinematics ; vibration analysis ; additive manufacturing ; mechanical design ; closed-kinematic chain manipulator (CKCM) ; sliding mode control (SMC) ; time-delay estimation (TDE) ; nonsingular fast terminal sliding mode control (NFTSMC) ; synchronization control ; model-free control ; n/a ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-11-30
    Description: Polyphenols are natural phytochemicals recognized as one of the largest and most widespread classes of plant constituents occurring throughout the plant kingdom. Over the years, polyphenols have attracted the attention of the scientific community due to their potential health-promoting effects. Owing to their several interesting properties, polyphenols have aroused considerable interest, shedding light on their chemistry, reactivity, biological properties and their beneficial effects on both plants and humans. As a result of these investigations, a huge number of research works have been reported on polyphenols. However, despite the voluminous literature studying polyphenols and their impact on human health, there are still many issues waiting to be explored in order to explain and elucidate the positive effects of polyphenols on human health. This Special Issue was intended to gather up-to-date knowledge related to the cutting-edge research in the broad scientific area of polyphenols, providing an opportunity to show the latest advances in the exploration of polyphenols and their health beneficial effects. The special issue was a great success with more than 50 published manuscripts covering various aspects related to polyphenols and their role in human health. We are confident that this Special Issue will be of great interest to the scientific community, and will contribute to the improvement of knowledge regarding the area of polyphenols, leading to a better understanding of their role in human health.
    Keywords: polyphenolic curcumin ; cisplatin ; combination therapy ; breast cancer ; apoptosis ; gemini surfactant nanoparticles ; Mucuna pruriens seed ; neuroprotective activity ; Parkinson’s disease ; anti-acetylcholinesterase activity ; L-dopa ; Mitrephora sirikitiae ; anti-inflammation ; lignans ; polyphenols ; mRNA expression ; cytokines ; gemini curcumin ; colorectal cancer ; RNA sequencing ; PPI network ; differentially expressed genes ; Ericaceae ; LC–DAD/ESI–MS ; phenolic compounds ; flavonoids ; antioxidant activity ; Artemia salina Leach ; resveratrol ; hexavalent chromium ; 8-hydroxydeoxyguanosine adduct repair ; endogenous antioxidant system ; antigenotoxic ; Opuntia sp. ; prickly pear ; inflammation ; ginseng leaf ; far-infrared irradiation ; ginsenosides ; antioxidants ; health benefits ; polysaccharides ; freeze-drying ; spray-drying ; antidiabetic ; Averrhoa carambola L. ; dihydrochalcone ; flavone glycosides ; obesity ; Oxalidaceae ; type 2 diabetes ; Alchemilla viridiflora Rothm. ; SARS-CoV-2 ; COVID-19 ; spike glycoprotein ; neuropilin-1 ; in vitro ; in silico ; Origanum compactum ; HPLC-PDA-ESI/MS ; antibacterial activity ; bioactive compounds ; nutraceuticals ; phenols ; pomegranate peels ; phytochemical ; wistin ; NADES ; total polyphenolic content ; enzyme inhibition ; functional food ; natural medicine ; Alzheimer cholinesterase inhibitors ; Maqui ; platelets ; phenolic compounds and cardiovascular ; phenolic acids ; sinapic acid ; ACE inhibition ; hypertension ; endothelial dysfunction ; Graminex pollen ; hydroalcoholic extract ; oxidative stress ; gene expression ; TRPV1 ; pterostilbene ; antioxidant ; bioavailability ; cancer ; diabetes ; Nrf2 ; Rosmarinus officinalis ; chemical analysis ; glioblastoma ; rhabdomyosarcoma ; red onion ; phytochemicals ; H9c2 rat cardiomyoblast ; primary human fibroblasts ; blood disorder ; haemoglobin ; natural product ; nutraceutical ; nutritional disease ; lichens ; neuroprotection ; cetrarioid clade ; grape polyphenols ; sarcopenia ; skeletal muscle ; clinical trial ; R. conduplicans ; lichen ; secondary metabolites ; DNA damage ; α-glucosidase inhibition ; adlay ; adlay testa ; antiglycation ; phenolic acid ; grape pomace ; anti-inflammatory ; curcumin ; poly(glycerol sebacate) ; nanoparticles ; drug delivery system ; human cervical cancer ; baicalein ; mangiferin ; quercetin ; diabetes mellitus ; peripheral artery disease ; cardiovascular diseases ; Cyperus esculentus ; tiger nut ; metabolomics ; UHPLC-ESI-QTOF-MS/MS ; foodomics ; scopolamine ; memory impairments ; phenol compounds ; polydatin ; 3-O-β-d-resveratrol-glucopyranoside ; cervical cancer ; lung cancer ; ovarian cancer ; nanosuspension ; antioxidant properties ; LPS-induced inflammation ; NO-scavenging activity ; mountain tea ; Lamiaceae ; iridoids ; phenylethanoids ; ultrasound-assisted extraction ; melittoside ; ajugoside ; verbascoside ; ferulic acid ; apoptosis and cell cycle arrest ; anti-angiogenesis ; anti-metastasis ; synergism ; Cymbopogon schoenanthus ; hyaluronidase ; acetylcholinesterase ; neurodegeneration ; skin ; hair ; human health ; immobilized PTP1B ; drug screening ; cell surface display ; salvianolic acid B ; traditional Chinese medicine ; Salicornia ; extraction technologies ; agro-industrial by-products ; biological activity ; circular economy ; health effects ; re-integration ; waste management ; blood orange peels ; infrared-assisted extraction ; optimization ; Aflatoxin B1 ; Achillea millefolium ; bioaccessibility ; Caco-2 absorption ; in vitro digestion ; sterol regulatory element-binding protein 1 ; human oral squamous cell carcinoma ; autophagy ; epidermal fatty acid-binding protein ; lentil hull ; enzymatic hydrolysis ; microwave-assisted extraction ; oligosaccharides ; Alocasia gigantea ; hepatocellular carcinoma ; histopathology ; UHPLC–DAD–ESI–MS/MS ; Salvianolic acid B ; matrix metalloproteinase 9 ; gelatinase B ; MDA-MB-231 human breast cancer cells ; TIMP-1 ; agri-food wastes ; sustainability ; polyphenols bioavailability ; polyphenols activity ; cosmeceuticals ; nano-delivery ; health ; Lithocarpus litseifolius ; trilobatin ; phloridzin ; phloretin ; metabolic pathway ; bioactivity ; honey ; functional beverage ; characterization ; alcoholic beverage ; fermented beverage ; functional foods ; beneficial effects ; biological treatment ; bioreactors ; water ; aerobic granular sludge ; conventional active ted sludge ; biofilter ; photobioreactor ; membrane bioreactor ; bio-electrochemical systems ; chitosan ; Indian borage ; biotic elicitor ; insect-based foods ; Folin–Ciocalteu method ; phenols and flavonoids ; polyphenols bioactivity ; cereal ; pre-harvest sprouting ; antiradical capacity ; antitumor activity ; bee products ; phenylamides ; multivariate statistical analysis ; Juniperus sabina ; cupressuflavone ; intranasal ; pharmacokinetic ; motor coordination ; oregano ; box–behnken ; phenolics ; HPLC-PDA analysis ; UPLC-Q-TOF MS ; olive pomace ; PBMC ; immune gene expression ; HPLC-DAD ; metabolome ; phenolic bioaccessibility ; propolis ; total phenolic compounds ; antioxidant capacity ; UHPLC-DAD-ESI-MS ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::P Mathematics & science::PS Biology, life sciences
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  • 89
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-11
    Description: The effects of additives on the flow characteristics of drilling muds used in various drilling operations, including oil and gas wells, must be better quantified. In this study, acrylamide polymer was used to modify water-based bentonite mud to reduce the yield point and maximum shear stress produced by the mud during the drilling operation. The bentonite content in the drilling mud was varied up to 6% (by weight). Based on the X-ray diffraction (XRD) analyses, the major constituents of bentonite were montmorillonite (MMT, (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2·nH2O), feldspar (Albite, NaAlSi3O8), kaolinite (Al2Si2O5(OH4)), Beidellite ((Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2·nH2O) and quartz (SiO2). Bentonite was modified using a water-soluble polymer solution before being used in the drilling mud. The rheological properties of bentonite were characterized from a very low strain rate to a relatively high strain rate to determine the nonlinear behavior of the shear-thinning drilling mud. The polymer modification reduced the yield point by 26–66% based on the bentonite content in the drilling mud.
    Keywords: waste crumb rubber ; rubberized self-compacted concrete ; mechanical properties ; durability properties ; empirical model ; natural pozzolan ; limestone powder ; acid resistance ; sulfuric acid ; alkali activation ; silica fume ; micro-fibers ; recycling ; tensile properties ; non-destructive properties ; self-compacted geopolymer concrete (SCGC) ; slag/fly ash ; fresh properties ; empirical equation ; sorptivity ; long-term free drying shrinkage ; steel fiber ; concrete ; representative volume element (RVE) ; meso-mechanical ; vegetated slope ; unsaturated soil ; vetiver root system morphology ; matrix suction ; soil–water characteristic curve ; fibrous concrete ; date palm fiber ; engineering characteristics ; durability ; thermal cycles ; energy absorption capacity ; ground tire rubber ; parallel plate geometry ; concentric cylinder geometry ; MSCR ; LAS ; continuous performance grade ; Delta T Critical ; cellulose fibre ; cement replacement ; fibre reinforcement ; flexural ductility ; life cycle ; engineering properties ; waste tyres ; construction waste ; water absorption ; supplementary binder ; optimization ; fibers and environment ; fracture mechanics ; curing age ; bonding strength ; models ; acetates ; compressive strength ; response surface methodology ; workability ; lime-based concrete ; mechanical characteristics ; fiber reinforcement ; curing conditions ; curing periods ; self-compacting concrete ; mix proportion ; slump flow ; modeling ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
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  • 90
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-03-28
    Description: In this Special Issue, seven original research articles, two review articles, and one protocol show the impact of female researchers in the field of analytical science. Analytical methods are necessary in dentistry, medicine (both human and veterinary), archaeology, the pharmaceutical industry, food science and technology, and environmental sciences, and these are only a few examples. The multidisciplinary role of chemistry is reflected in all important advances from research groups in technological progress, proving that analytical chemistry is the key issue in scientific progress. In parallel with this outstanding role of analytical chemistry in a variety of scientific fields, we would particularly like to reflect the impact of female researchers in the field of analytical chemistry in this Special Issue to serve as a motivational guide for girls and women pursuing a STEM career. Therefore, we invited well-established scientists to share the results of their research with the scientific community through this Special Issue, which aimed to compile manuscripts written or lead by women analytical chemists.
    Keywords: bisphenol A ; 4-tert-octylphenol ; Artemia franciscana ; HPLC-DAD ; SPME ; pesticide ; gas chromatography ; mass spectrometry ; food ; environmental ; rosuvastatin ; ezetimibe ; glassy carbon electrode ; adsorptive stripping differential pulse voltammetry ; UVFs ; QuEChERS ; in-port derivatization ; waste sludge ; PAH ; biomonitoring ; air pollution ; tree ; HPLC ; antioxidants ; chlorogenic acid ; chemiluminiscence ; CCD camera ; green coffee ; on-site ; heavy metal ions ; modified electrode ; electroanalysis ; nanoparticles ; anthocyanins ; Box–Behnken design ; optimization ; purple corn ; ultrasound-assisted extraction ; antibody conjugates ; biosensing ; bioreporter ; lateral flow devices ; nanoparticles aggregation ; pH ; hydroalcoholic gels ; personal care products ; solid phase microextraction ; tandem mass spectrometry ; thema EDItEUR::G Reference, Information and Interdisciplinary subjects::GP Research and information: general ; thema EDItEUR::P Mathematics and Science::PN Chemistry ; thema EDItEUR::P Mathematics and Science::PN Chemistry::PNF Analytical chemistry
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  • 91
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-11
    Description: The need to find suitable biomaterials and procedures from alternative sources able to imitate or even enhance the performance of currently used products has become an important focus of research today due to the depletion of non-renewable resources and the increasing concern related to climate change, sustainability and environmental preservation. Thus, this reprint gathers different original articles and review manuscripts from the Special Issue “Development of Bio-Based Materials: Synthesis, Characterization and Applications”. The development of partial or fully bio-based materials has been included, with excellent outcomes in many different applications, as well as alternative procedures that can reduce the carbon footprint or optimize both production and energy consumption.
    Keywords: mangosteen leaves ; marker ink ; color lightness ; viscosity ; optimization ; RSM ; biomaterial ; palm oil ; radiation curing ; radiation processing ; surface coatings ; VOC ; cellulose nanocrystal ; film ; homogenization ; ultrasonication ; secondary processing mill residues ; wood flour ; wood pellets ; wood–plastic composites ; physical properties ; transportation costs ; biocomposite ; bio-sourced products ; mechanical properties ; micro-mechanics ; mechanical testing ; lignin ; emulsion ; rheology ; microstructure ; bitumen ; product design ; burn wound healing ; polymeric film ; microwave ; nanoparticles-film combined application ; xanthan gum ; potassium formate ; rheological behavior ; high-temperature aging ; citric acid ; oil palm trunk ; oil palm frond ; empty fruit bunch ; cyclic aging treatment ; biopolymer ; biomaterials ; biodegradations ; polysaccharide ; bone tissue engineering ; polymer ; plasma modification ; PMMA ; material morphology ; honeycomb-like pattern ; cell growth ; cytocompatibility ; FEP ; cell adhesion ; neat biochar ; palm kernel shell ; magnetic biochar ; adsorption mechanism ; encapsulated carvacrol ; gellan gum hydrogel ; antibacterial activity ; E. coli ; natural fibers ; socio-economic assessment ; technological aspects ; sustainability ; renewable resources ; cellulose nanofibers ; chemical pretreatment ; cytotoxicity ; nanocellulose ; Populus alba L. ; bioadhesive ; chitosan methacrylate ; graphene oxide ; bone repair ; photocrosslinking ; antimicrobial peptide (microspheres) ; Tricholoma matsutake ; physicochemical quality ; microbial quality ; lignocellulose ; cellulose ; biofuels ; biochemicals ; lubricating greases ; adhesives ; cushioning materials ; adsorption ; carrier ; covalent attachment ; entrapment ; immobilization ; protein engineering ; therapeutic enzyme ; polyesteramides ; biodegradable polymers ; biobased polymers ; mass spectrometry ; MALDI ; tandem mass spectrometry ; sequencing ; characterization ; Py-GC/MS ; high-fat diet ; obesity ; Tremella fuciformis ; uronic acid ; biopolymers ; tear strength ; amorphous structure ; droplet size distribution ; microfluidization ; Pickering emulsion ; response surface methodology ; Turbiscan Stability Index ; zein ; 3D printing ; additive manufacturing ; cell immobilization ; bio-based polymers ; dual curing ; shape-memory ; photocuring ; microtransfer molding ; compressed wood ; bleaching ; lignin content ; alpha-cellulose ; swelling ; chitooligosaccharides ; chitin ; chitosan ; anti-inflammatory ; antioxidant ; tissue engineering ; wound healing ; antimicrobial ; drug delivery ; antitumor ; n/a ; rigid foams ; tannin-based foams ; polyurethane foams ; phenolic foams ; Iron(III)-hemicellulose complex ; rhamnoxylan ; iron supplement ; magnetic polymer ; hematinic ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TC Biochemical engineering::TCB Biotechnology
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  • 92
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-11
    Description: Mathematical modeling is at the heart of most current developments in biological system analysis and bioprocess optimization and control. At the industrial scale, this evolution is reflected in process analytical technologies (PAT), digital twins, and Industry 4.0. This book focuses on various aspects of mathematical modeling at the microscopic and macroscopic scales, respectively, and demonstrates the potential of these methodologies to gain insight into the cell metabolism, to support the design of software sensors to reconstruct unmeasurable variables, or to establish model-based optimization of the operating conditions and/or feedback control of the bioprocesses. The range of applications is vast, including biopharmaceuticals, bioenergy, and the environment.
    Keywords: mathematical model ; continuous bioreactor ; biodegradation ; phenol and p-cresol mixture ; SKIP model ; equilibrium points ; stability analysis ; global stabilizability ; numerical simulation ; MEC ; hydrogen production ; online optimization ; golden section search ; super-twisting controller ; FPGA ; bioplastic ; copolymerization ; polyhydroxyalkanoate ; kinetic modeling ; PID (PI) control ; gain-scheduling ; biotechnological cultivation process ; dissolved oxygen concentration ; flux variability analysis ; flux balance analysis ; sampling ; metabolic network ; elementary flux modes ; set membership estimation ; dynamic flux balance model ; multiparametric programming ; observability ; variable structure system ; process analytical technologies (PAT) ; off-gas analytic ; real-time monitoring ; viable cell biomass ; perfusion process ; continuous process ; single-use bioreactor (SUB) ; oxygen uptake rate (OUR) ; soft sensor ; metabolic flux analysis ; VERO cells ; biotechnology ; B. thuringiensis kurstaki ; biopesticides ; kinetic parameters ; dynamic model ; composting ; optimization ; mathematical modeling ; anaerobic digestion ; biogas ; chemostat ; maintenance ; operating diagram ; productivity ; stability ; optimal control ; modelling ; microalgae ; nonlinear control ; Pontryagin’s principle ; singular control ; Droop model ; photobioreactor ; biomass ; biorefinery design ; process integration ; scheduling ; simulation ; n/a ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TD Industrial chemistry and manufacturing technologies::TDC Industrial chemistry and chemical engineering
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  • 93
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-11
    Description: This reprint presents the current status of research activities concerning vehicle design processes. The design of vehicles is one of the most challenging tasks in engineering because of several reasons. The enormous consumer expectations as well as the intensive global competition aggravates vehicle design. Cost-driven design is a necessity and vehicles need to be economical in production, operation, and recycling; in fact, sustainable design is also imperative for ecological vehicles. The dynamics of vehicles have to be considered in the design of all components and light-weight design is of fundamental importance. Consumers expect convincing functional performance, high product quality, appealing appearance, high reliability, interconnected functionality as well as comprehensible and appealing user interfaces. More and more, additional services are connected to vehicles. These enormous requirements lead to complex multi-domain design processes of vehicles because most of the important decisions are made in the design phase. Production optimization and intelligent operation are important topics, but flaws and insufficiencies in the design stage lead to enormous expenditures in later stages and less-than-perfect products. The design processes of vehicles involve thousands of engineers are spread globally and need to consider multiple product versions and variants as well as multi-company product platforms.
    Keywords: magnetorheological suspension ; regenerative energy ; joint simulation ; suspension performance ; hybrid electric vehicles ; powertrain design ; powertrain configurations ; powertrain components ; fuel economy optimization ; vehicle performance optimization ; digital design process ; urban vehicles ; balanced two-wheel scooter ; elasto-kinematic ; axle model ; suspension kinematics ; multibody simulation ; tire wear ; thermomechanical fatigue ; multiaxial fatigue ; out-of-phase failure ; brake disc ; life prediction ; high-speed railway ; damage mechanism ; vehicle design processes ; optimization ; electrical drive-train ; simulation ; hyperloop actuation ; capsular vehicles ; inter-distance control ; magnetic levitation ; control and actuation ; numerical studies ; longitudinal distance ; statistical customer data ; design-relevant parameters ; design of vehicle drive systems ; purpose-built vehicle ; new mobility ; ride-pooling ; Mobility-as-a-Service (MaaS) ; field robotics ; hybrid sensing platform ; aquaculture ; HAUCS ; Internet of Things ; origami ; robotic extension ; mobile agent ; LoRa ; analysis of customer data ; sequence of time series ; vehicle technology ; energy ; fire suppression ; boron ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TR Transport technology and trades
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  • 94
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-08-08
    Description: Fibrous composites are one type of high-performance composite material featuring the presence of fiber-like reinforcement impregnated with different matrix bases, which have taken a prominent position in diverse engineering applications because of their unique mechanical/physical properties and outstanding structural functions. Manufacturing is a critical procedure to ensure the target dimensions and desired quality of fibrous composites. This involves technical issues frequently encountered in the fabrication, processing, and machining of these composite materials. To date, great endeavors have been made in the past few decades to address manufacturing issues associated with the engineering applications of fibrous composites. Precision manufacturing of these advanced composites has thus become a hot research topic in both academia and industry. Recent advances have been achieved covering both experimental and numerical investigations of manufacturing science and technology of fibrous composites. This Special Issue sought to report the latest research findings achieved by scholars worldwide focusing on the manufacturing science of fibrous composites for engineering applications. Well-organized papers covering both experimental and numerical studies of fabricating, processing, and machining fibrous composites were all welcomed. It was our hope that this Special Issue will provide a platform for academic and industrial researchers to share and disseminate their original research results on all manufacturing aspects of fibrous composites.
    Keywords: co-continuous ceramic composites ; C4 ; ceramic foam ; gas infiltration ; compressive strength ; structural characterization ; CFRP composites ; drilling process ; special drills ; machining temperatures ; hole quality ; graphene oxide ; polymer ; composite ; milling ; carbon fiber ; n/a ; liquid composite molding ; microwave preheating ; dielectric flow monitoring ; liquid composite moulding ; flow visualisation ; numerical modelling ; Volume of Fluid (VOF) ; multi-phase model ; void formation ; dual-scale flow ; permeability ; textile preforms ; fiber reinforced plastics ; single-shot drilling ; CFRP/Al stacks ; optimization ; twist drill ; ANOVA ; polycarbosilane (PCS) ; fiber ; pyrolysis ; self-bonding ; silicon carbide ; organomorphic preform (OP) ; autoclave ; cool-clave ; vacuum ; heated tooling ; fibre-reinforced composites ; FRPC ; manufacturing techniques ; additive manufacturing ; mechanical characterization ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::P Mathematics & science::PH Physics
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  • 95
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-03-07
    Description: Several factors influence consumers’ choices of food products. While price remains the main criterion, quality, pleasure, convenience, and health are also important driving factors in food market evolution. Food enterprises are making significant efforts to manufacture products that meet consumers’ demands without compromising on safety standards. Additionally, the food industry also aims to improve the efficiency of transformation and conservation processes by minimizing energy consumption, process duration, and waste generation. However, foods are highly complex systems in which: (i) Non-linear dynamics and interactions among different temporal and spatial scales must be considered; (ii) A wide range of physical phenomena occur; (iii) Different food matrices, with different microstructures and properties are involved; and (iv) The number of quality and safety indicators (such as bacteria, total volatile basic nitrogen, color, texture, odor, and sensory characteristics) is substantial. Mathematical modeling and simulation are key elements that allow us to gain a deeper understanding of food processes and enable the use of tools such as optimization and real-time control to improve their efficiency. This Special Issue gathers research on the development of dynamic mathematical models that describe the relevant factors in food processes, and model-based tools to improve such processes. The contributions published in this Special Issue can be grouped into two categories: the evolution of safety and quality indicators in unprocessed food systems, and transformation and preservation processes.
    Keywords: food safety ; predictive microbiology ; mathematical models ; microbial inactivation ; sublethal injury ; bioprocess engineering ; fermentation process ; batch bioreactors ; dynamical non-linear mathematical model ; model identification ; particle swarm optimization ; simulation ; Carnobacterium maltaromaticum ; modeling ; microbial growth ; optimization ; fermentation ; temperature-dependent thermal properties ; scaled sensitivity coefficient ; TPCell ; parameter estimation ; inverse problems ; food microstructure ; electronic nose ; Shewanella putrefaciens ; dynamic growth ; spoilage prediction ; GC-MS ; acrylamide formation ; thermal resistance ; dynamic models ; FSSP ; DoE ; smoke ; fish ; wine fermentation ; nitrogen ; mathematical modeling ; population model ; maintenance ; variable yield ; underutilized wild species ; lycopene ; viscosity ; thermal processing ; color ; mathematical modelling ; fish quality ; fish freshness ; bibliometric analysis ; stress variables ; quality degradation ; beer fermentation ; food industry ; multi-objective optimization ; model-based optimization ; equivalent solutions ; uncertainty ; Monte Carlo ; frying operation ; acrylamide ; quality ; n/a ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::K Economics, finance, business & management::KC Economics::KCN Environmental economics
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  • 96
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-03-30
    Description: The focus of this reprint is the development of novel intelligence techniques for solving various problems in engineering. These techniques, due to their ability to create complex relationships between dependent and independent variables, can be implemented in a faster and more reliable way. Such techniques utilise algorithms/approaches such as artificial neural networks, fuzzy logic, evolutionary theory, learning theory, and probabilistic theory, making them a suitable and useful fit for real-life complex problems. This reprint introduces the process of selecting, applying, and developing such techniques in different engineering designs and applications. In addition, the validation process of intelligence systems as an alternative is discussed in this reprint. Overall, this reprint forms an excellent introduction to these systems for engineers who are not familiar with them.
    Keywords: confinement of concrete ; CFST composite column ; artificial intelligence ; gene-expression programming ; hybrid techniques ; finite element method (FEM) ; imbalanced data ; travel mode choice data ; hybrid support vector machine-based model ; rock excavation ; soft computing ; cutter life index ; rock strength ; brittleness ; classification ; slope stability ; tree-based models ; random forest ; AdaBoost ; decision tree ; 3D bridge model ; IFC-based bridge model ; engineering document ; document fragment ; integrated operation ; granular model ; incremental granular model ; interval-based fuzzy c-means clustering ; coverage ; specificity ; performance index ; piezocone ; soil classification ; fuzzy C-means clustering ; neuro-fuzzy ; scratch-resistant ; hydrophobic ; GPTES ; transparent ; sol–gel ; blasting ; ground vibration ; PPV prediction ; whale optimization algorithm ; salp swarm optimizer ; spread foundation ; retaining structures ; economic design ; rock brittleness ; linear genetic programming ; bagged regression tree ; lazy machine learning method ; SCC ; compressive strength ; fly ash ; statistical analysis ; modeling ; blockchain technology ; intelligent technology ; internet of vehicles ; malicious nodes ; identification algorithm ; inverse analysis ; hydraulic conductivities ; Gray Wolf Optimizer ; thermal conductivity ; geothermal systems ; gene expression programming (GEP) ; non-linear multivariable regression (NLMR) ; P-wave ; porosity ; backpropagation neural network ; blast-induced ground vibration ; Gaussian process regression ; green campus ; shared free-floating electric scooter ; usage frequency prediction ; battery electric ; battery pack ; energy performance ; simulation ; second life batteries ; off-grid PV system ; residential building ; EV charging station ; optimization ; metaheuristic algorithms ; streamflow forecasting ; concrete ; water-reducer contents ; workability ; slump retention ; conceptual framework ; crowd-machine hybrid interaction ; design implications ; hybrid intelligence ; survey ; taxonomy ; thema EDItEUR::K Economics, Finance, Business and Management::KN Industry and industrial studies::KNT Media, entertainment, information and communication industries::KNTX Information technology industries
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-03-07
    Description: Microgrids deliver efficient, low-cost, and clean energy while improving regional electric grid operation and stability. They further provide exceptional dynamic responsiveness for energy resources. A global portfolio of operations centered on the development and deployment of microgrids to increase grid dependability and resilience would therefore assist communities in better preparing for future weather catastrophes and keep the world moving toward a sustainable energy future. Solar photovoltaic systems are seen as a promising renewable resource, and their application in microgrids has grown rapidly in recent years.
    Keywords: doubly fed induction generator ; wind turbine ; renewable energy ; rotor control ; steady state model ; HIL ; LLC resonant converter (LLC-RC) ; soft switching ; time domain analysis ; ZVS ; ZCS ; ANFIS ; ECMS ; hybrid electric vehicle ; Haar wavelet transform ; hydrogen consumption ; power management scheme ; system efficiency ; emissions trading system ; allowance allocation ; quantitative statistics ; qualitative analysis ; cost function ; model predictive current control ; single-phase shunt active power filter ; THD ; multi-input multi-output ; step-up converter ; energy storage ; DC–DC converter ; transformerless inverter ; photovoltaic ; high-efficiency inverter ; grid-connected system ; single-phase inverter ; smart microgrid ; optimization ; hybrid renewable energy source ; internet of things ; cost of electricity ; information and communication technology ; coupled inductor converter ; full bridge converter ; half bridge converter ; interleaved converter ; micro grid ; photo voltaic (PV) ; resonant converter ; zero voltage switching (ZVS) ; zero current switching (ZCS) ; induction motor drive ; dc-link voltage balancing ; space vector modulation ; switching loss ; total harmonic distortion ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::P Mathematics & science::PS Biology, life sciences
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  • 98
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2022-05-06
    Description: Today, the flow of electricity is bidirectional, and not all electricity is centrally produced in large power plants. With the growing emergence of prosumers and microgrids, the amount of electricity produced by sources other than large, traditional power plants is ever-increasing. These alternative sources include photovoltaic (PV), wind turbine (WT), geothermal, and biomass renewable generation plants. Some renewable energy resources (solar PV and wind turbine generation) are highly dependent on natural processes and parameters (wind speed, wind direction, temperature, solar irradiation, humidity, etc.). Thus, the outputs are so stochastic in nature. New data-science-inspired real-time solutions are needed in order to co-develop digital twins of large intermittent renewable plants whose services can be globally delivered.
    Keywords: self-healing grid ; machine-learning ; feature extraction ; event detection ; optimization techniques ; manta ray foraging optimization algorithm ; multi-objective function ; radial networks ; optimal power flow ; automatic P2P energy trading ; Markov decision process ; deep reinforcement learning ; deep Q-network ; long short-term delayed reward ; inter-area oscillations ; modal analysis ; reduced order modeling ; dynamic mode decomposition ; machine learning ; artificial neural networks ; steady-state security assessment ; situation awareness ; cellular computational networks ; load flow prediction ; contingency ; fuzzy system ; change detection ; data analytics ; data mining ; filtering ; optimization ; power quality ; signal processing ; total variation smoothing ; n/a ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues::TBX History of engineering & technology
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  • 99
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-09
    Description: This book covers the latest development of bioprocess technology including theoretical, numerical, and experimental approaches in biotechnology as well as green technology that bridge conventional practices and Industry 4.0. Bioprocessing is one of the key factors in several emerging industries of biofuels, used in the production of biogas, bioethanol, and biodiesel; industrial enzymes; waste management through biotechnology; new vaccines; and many more. It is hoped that the novel bioprocess and green biotechnologies presented in this book are useful in assisting the global community in working towards fulfilling the Sustainable Development Goals (SDG) of the United Nations.
    Keywords: extraction ; leaf ; liquid biphasic flotation ; polygonum ; protein ; date fruits ; proximate analysis ; physico-chemical characteristics ; date sugar ; phytoconstituents ; amino acids ; biomaterials ; Ficus carica ; diabetes mellitus ; proteomics ; sperm quality ; bioeconomy ; bioprocesses ; applications ; policy ; social welfare ; sustainability ; nanofiltration ; lipase ; Fusarium heterosporum ; fatty acid methyl ester ; electronics package ; induction heating ; magnetic field ; electric field ; TM110 single-mode cavity ; solder ; eddy current ; GABA ; fermented food ; functional food ; non-protein amino acid ; soy sauce fermentation ; lignocellulosic biomass ; holocellulose ; CMC ; degree of substitution ; excipient ; non-edible ; oil ; biodiesel production ; fuel ; Lactobacillus isolation ; lag phase ; bacteria sequencing ; breast milk ; chitosan ; co-loaded nanoparticles ; hydrophobic modification ; l-ascorbic acid ; thymoquinone ; sustainable supply chain management (SSSCM) ; social sustainability ; qualitative research ; Pakistan ; biohydrogen production ; immobilised cells ; entrapment ; alginate ; activated carbon ; carbon dioxide ; culture media ; microorganism ; optimization ; plant growth promoting rhizobacteria ; oil palm seedlings nursery ; biofertilizers ; chemical fertilizer ; n/a ; sago hampas ; amylase ; cellulase ; substrate feeding ; saccharification ; biomass ; waste cooking oil ; green fuel ; biodiesel ; heterogeneous catalyst ; deoxygenation ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
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  • 100
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-09
    Description: Some terms, such as eco-friendly, circular economy and green technologies, have remained in our vocabulary, because the truth is that mankind is altering the planet to put its own subsistence at risk. Besides, for rationalization in the consumption of raw materials and energy, the recycling of waste through efficient and sustainable processes forms the backbone of the paradigm of a sustainable industry. One of the most relevant technologies for the new productive model is anaerobic digestion. Historically, anaerobic digestion has been developed in the field of urban wastes and wastewater treatments, but in the new challenge, its role is more relevant. Anaerobic digestion is a technologically mature biological treatment, which joins bioenergy production with the efficient removal of contaminants. This issue provides a specialized, but broad in scope, overview of the possibilities of the anaerobic digestion of lignocellulosic biomass (mainly forestry and agricultural wastes), which is expected to be a more promising substrate for the development of biorefineries. Its conversion to bioenergy through anaerobic digestion must solve some troubles: the complex lignocellulosic structure needs to be deconstructed by pretreatments and a co-substrate may need to be added to improve the biological process. Ten selected works advance this proposal into the future.
    Keywords: exhausted sugar beet pulp ; pig manure ; anaerobic co-digestion ; thermophilic ; lignocellulosic waste ; anaerobic digestion ; biogas ; optimization ; operating parameters ; review ; particle-rich substrate ; suspended solids disintegration ; disintegration kinetics ; cellulase ; lignocellulosic biomass ; pretreatment methods ; limitations ; hydro-thermal pretreatment ; biofuels ; feedstock and degradation pathway ; AD systems ; pretreatment technologies ; process stability ; codigestion ; rice straw ; nutrients ; recycling ; digestate ; methane ; corn residue ; organosolv pretreatment ; sugar beet by-products ; manure ; semi-continuous feeding mode ; methane improvement ; non-classical parameters ; sorghum mutant ; biomass ; soluble sugars ; dilute acid pretreatment ; one-pot process ; n/a ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: English
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