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  • thema EDItEUR::P Mathematics and Science::PD Science: general issues
  • MDPI - Multidisciplinary Digital Publishing Institute  (39)
  • InTechOpen  (20)
  • Logos Verlag Berlin  (5)
  • Leiden University Press  (2)
  • English  (66)
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  • 1
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-08-08
    Description: This Special Issue highlights fundamental changes to the questions that we can ask about both the recent past and deep time. Delve into the forefront of paleontological research with this Special Issue reprint. Renowned paleontologists from around the world share groundbreaking insights into ancient life on Earth. Discover the latest advances in fossil discovery, analytical techniques, interdisciplinary collaborations, and technological innovations that are shaping our understanding of evolution and the Earth's history. This collection of cutting-edge research is a must-read for scientists, researchers, and enthusiasts interested in the dynamic field of paleontology in the modern era.
    Keywords: REE ; Tyrannosaurus rex ; molecular paleontology ; geochemical taphonomy ; diagenesis ; bone ; protein ; collagen ; Hell Creek Formation ; cuticle ; Eocene ; Fur Formation ; insects ; melanin ; mo-clay ; pigment ; Stolleklint Clay ; structural coloration ; Ølst Formation ; fossil ; dinosaur ; paleoproteomics ; porphyrin ; keratin ; feather ; taphonomy ; degradation ; microbes ; CO2 ; apatite ; paleontology ; China ; history ; 20th century ; 21th century ; paleobiology ; history and philosophy of paleontology ; twenty-first-century paleontology ; paleobiological revolution ; technoscience and global issues ; fossil proteins ; rare earth elements ; soft-tissue preservation ; geochemistry ; soft tissues ; molecular preservation ; Hornerstown Formation ; shallow marine ; glauconite ; hybridization ; introgression ; ancient DNA (aDNA) ; hominin paleontology ; paleoanthropology ; Brachylophosaurus ; Judith River Formation ; ELISA ; RIA ; Venta Micena site ; VM-0 ; VM-1960 ; taxonomy ; morphometrics ; phylogeny ; evolution ; morphological clock ; molecular clock ; biodiversity ; palaeobiogeography ; macroevolution ; primates ; Cercopithecidae ; monkeys ; genotype:phenotype mapping ; dentition ; Equidae ; Equinae ; hipparionini ; protohippini ; equini ; paleoecology ; paleoclimatology ; biochronology ; steroids ; diet ; coprolites ; Gryphaea dilatata ; crystallographic texture ; pole figures ; neutron diffraction ; recrystallization ; thick-walled shells ; molecular taphonomy ; fossils ; preservation ; mass spectrometry ; dinosaurs ; Neanderthal ; Combe-Grenal ; juvenile ; mandible ; periodontitis ; tooth ; tartar ; SEM analysis ; n/a ; terrestrialization ; artrhopods ; Cambrian explosion ; molecular clocks ; palaeontology ; phylogenomics ; teeth ; enamel ; microanalysis ; Purussaurus ; Neoepiblema ; miocene ; ICP-MS ; MEV ; microscopy ; magnetic resonance imaging ; micro-computed tomography ; radiocarbon dating ; DNA barcoding ; synchrotron ; bone remodeling ; elemental analysis ; diagenetic alteration ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::P Mathematics & science::PS Biology, life sciences
    Language: English
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  • 2
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-11
    Description: This book has focused on novel developments and advancements in the field of heterogeneous catalysis with the aim of greenhouse gas reduction. The book determines whether carbon dioxide is a crisis or an opportunity, as well as its conversion into useful products such as synthesis gas. Moreover, the selective catalytic removal of nitrogen oxides is also presented.
    Keywords: Al2O3 ; CO2 reforming ; La2O3 ; CH4 ; ZrO2 ; perovskites ; strontium ; cerium ; hydrogen ; sintering ; carbon deposition ; BiF3 nanostructure ; POP composite ; photocatalyst ; Rz ink ; CO2 ; stability ; H-ZSM-5 ; greenhouse gas reduction ; CeO2 ; MgO ; dry reforming ; heterogeneous catalysis ; in situ XRD ; carbon dioxide (CO2) ; carbon monoxide (CO) ; CO2 feedstock ; methanation ; catalyst ; catalysis ; photocatalysis ; Power-to-Gas ; catalyst design ; heterogenous catalysts database ; ceramic foams ; ZnO nanorods ; TiO2 nanorods ; NOx mitigation (deNOx) ; environmental nanocatalysis ; selective catalytic reduction SCR ; W and V catalytic sites ; 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
    Language: English
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  • 3
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    InTechOpen | Molecular Photochemistry - Various Aspects
    Publication Date: 2024-04-04
    Description: Photodynamic therapy (PDT) is a branch of phototherapy that has seen a surge of interest in the last few decades, due to its potential in the treatment of various cancers, infections and heart disease.(Bonnett, 2000) This chapter aims to give an overview of the various photochemical steps involved in PDT as a cancer therapy, and in particular the challenges and insight gained from their theoretical description. After a brief review of PDT in general, in a biological and chemical context, the photochemical steps involved will be discussed, detailing the computational techniques required to model these chemical pathways theoretically. We will detail the methodologies that can currently be applied, as well as their limitations of use at present, and areas requiring further development.
    Keywords: computational modelling ; photodynamic therapy ; computational modelling ; photodynamic therapy ; Electron ; Excited state ; Ground state ; Molecule ; Multi-configurational self-consistent field ; Pacific Time Zone ; Photosensitizer ; Porphyrin ; Wave function ; thema EDItEUR::P Mathematics and Science::PD Science: general issues
    Language: English
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  • 4
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2022-05-06
    Description: With the announcement of the European Green Deal, which defines a set of policy initiatives aimed at achieving a 50–55% reduction in carbon emissions by 2030 and making Europe climate neutral in 2050, the challenge of energy transition becomes even more critical. The transformation of national energy systems towards sustainability is progressing throughout all Central and Eastern European (CEE) countries, yet the goals and results are different. Most EU Member States have made substantial progress towards meeting their long-term commitments of emissions reductions. However, some bloc members have struggled to meet their obligations. An effective energy transition requires the introduction of appropriately designed policy instruments and of robust economic analyses that ensure the best possible outcomes at the lowest costs for society. In this context, this Special Issue aims to bring into the discussion the challenges that CEE countries have to face and overcome while undergoing energy transition.
    Keywords: climate change ; food security ; grand challenges ; multiple factor analysis ; regional studies ; renewable energy ; sustainable development goals ; support systems ; energy policy ; cogeneration ; capacity market ; individual cogeneration premium ; trade globalization ; financial globalization ; CO2 emissions ; real GDP per capita ; bootstrap panel Granger causality ; EU transition economies ; photovoltaics ; renewable energy sources ; “My Electricity” ; renewable energy policy ; Poland ; “Mój Prąd” ; grant ; renewable energy grants ; renewable energy support ; economic appraisal ; social discount rate ; Ramsey formula ; consumption rate of interest ; social opportunity cost ; renewable energy sources (RES) ; green energy transformation ; sustainable development ; energy cooperatives ; coopetition ; Renewable Energy Communities ; management ; households ; energy consumption ; platform ; EU ETS ; CO2 ; emissions trading ; energy companies from Central and Eastern Europe ; decarbonisation ; energy transition ; low-carbon technology ; climate and energy policy ; indicators ; biomass ; electric vehicle ; electromobility ; energy balance ; efficiency engines ; clustering ; charging stations ; data analysis ; hydrogen cells ; energy law ; customer preferences ; electric car ; PHEV ; driving technique ; limestone sorbents ; flue gas desulphurisation ; FGD gypsum ; coal-fired power plants ; climate policy ; capacity adequacy ; linear programming ; COVID-19 pandemic ; lockdown ; electricity demand profiles ; Polish energy mix ; energy transition in Poland ; social acceptance ; carbon emissions ; fleet electrification ; sustainable mobility ; fleet management ; energy mix ; onshore wind ; risk assessment ; cash-flows ; discount rate ; cost of capital ; cost of equity ; district heating ; decarbonization ; energy efficiency ; Hubgrade ; remuneration mechanism ; power generation ; new investments ; combined heat and power ; optimization ; thermal energy storage ; uncertainty ; 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
    Language: English
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  • 5
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    InTechOpen | Advances in Bioengineering
    Publication Date: 2024-04-04
    Description: In the textile market industry, technical textiles are one of the fastest growing businesses. Part of that industry consists of textiles for medical and healthcare applications and are responsible for a continuous increase in its market potential [1]. Next to their need in hospital environments, there is a growing demand in other sectors such as the food and hotel industry, due to stricter hygiene regulations. In most cases biomedical textile meets a well-defined set of requirements such as minimizing non-specific protein adsorption, drug delivery coatings or the presence of active functional coatings and most importantly excellent biocompatibility (blood-, tissue-or cyto-compatibility) [2]. In general there are very few materials meeting all these characteristics, while at the same time offering the needed structural and mechanical properties. Furthermore, depending on the application, the production process has to be cost-effective and approved by local legislation.
    Keywords: plasma modified textiles ; biomedicine ; plasma modified textiles ; biomedicine ; Blood plasma ; Electrospinning ; Nonwoven fabric ; Surface modification of biomaterials with proteins ; Tissue engineering ; thema EDItEUR::P Mathematics and Science::PD Science: general issues
    Language: English
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  • 6
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2022-02-01
    Description: Rising pollution, climate change and the depletion of fossil fuels are leading many countries to focus on renewable-based energy conversion systems. In particular, recently introduced energy policies are giving high priority to increasing the use of renewable energy sources, the improvement of energy systems’ security, the minimization of greenhouse gas effect, and social and economic cohesion. Renewable energies’ availability varies during the day and the seasons and so their use must be accurately predicted in conjunction with the management strategies based on load shifting and energy storage. Thus, in order to reduce the criticalities of this uncertainty, the exploitation of more flexible and stable renewable energies, such as the geothermal one, is necessary. Geothermal energy is an abundant renewable source with significant potential in direct use applications, such as in district heating systems, in indirect use ones to produce electricity, and in cogeneration and polygeneration systems for the combined production of power, heating, and cooling energy. This Special Issue includes geothermal energy utilization and the technologies used for its exploitation considering both the direct and indirect use applications.
    Keywords: geothermal power production ; abandoned oil reservoirs ; in situ combustion ; organic Rankine cycle (ORC) ; plunger pump ; centrifugal pump ; pressure drop ; temperature utilization rate ; system generating efficiency ; carbonate geothermal reservoirs ; sustainable geothermal energy exploitation ; southern Italy ; numerical simulation ; dual-loop ORC ; mixture working fluids ; entropy generation ; entransy loss ; exergy loss ; Ground source heat pump ; oval cross-section ; groundwater ; borehole heat exchanger ; CFD ; Sandtank ; granite ; physical characteristics ; cyclic ; thermal treatment ; water cooling ; hybrid renewable polygeneration plant ; micro organic Rankine cycle ; evacuated solar thermal collectors ; photovoltaic panels ; plastic heat exchanger ; Organic Rankine Cycle ; geothermal energy ; shell and tube heat exchanger ; fouling resistance ; mobile thermal energy storage (M-TES) ; phase change material (PCM) ; LCOH ; heat transport ; renewable energy source ; household hybrid system ; dynamic simulation ; economic analysis ; TRNSYS software ; heating and cooling network ; polygeneration system ; geothermal energy community ; ORC ; energy district ; heat pump ; R1234ze ; CO2 ; geothermal ; renewable energy ; historic building ; energy saving ; earth-to-air ; horizontal pipe ; 2D model ; air conditioning ; renewable energy sources ; thermal performances ; energy efficiency ; parametric study ; geothermal resource ; Monte Carlo simulation ; assessment ; thermal reservoir ; North Jiangsu Basin ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues
    Language: English
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  • 7
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-01-05
    Description: The aim of carbon capture, utilization, and storage (CCUS) is to reduce the amount of CO2 released into the atmosphere and to mitigate its effects on climate change. Over the years, naturally occurring CO2 sources have been utilized in enhanced oil recovery (EOR) projects in the United States. This has presented an opportunity to supplement and gradually replace the high demand for natural CO2 sources with anthropogenic sources. There also exist incentives for operators to become involved in the storage of anthropogenic CO2 within partially depleted reservoirs, in addition to the incremental production oil revenues. These incentives include a wider availability of anthropogenic sources, the reduction of emissions to meet regulatory requirements, tax incentives in some jurisdictions, and favorable public relations. The United States Department of Energy has sponsored several Regional Carbon Sequestration Partnerships (RCSPs) through its Carbon Storage program which have conducted field demonstrations for both EOR and saline aquifer storage. Various research efforts have been made in the area of reservoir characterization, monitoring, verification and accounting, simulation, and risk assessment to ascertain long-term storage potential within the subject storage complex. This book is a collection of lessons learned through the RCSP program within the Southwest Region of the United States. The scope of the book includes site characterization, storage modeling, monitoring verification reporting (MRV), risk assessment and international case studies.
    Keywords: geologic CO2 sequestration ; CO2 and brine leakage ; underground source of drinking water ; risk assessment ; response surface methodology ; early detection criteria ; multi-objective optimization ; CO2-WAG ; machine learning ; numerical modeling ; hybrid workflows ; morrow ; Farnsworth ; Anadarko ; incised valley ; geological carbon sequestration ; reactive surface area ; mineral trapping ; enhanced oil recovery with CO2 (CO2-EOR) ; geochemical reactions ; workflow ; workshop ; process influence diagram ; response surface model ; polynomial chaos expansion ; NRAP ; relative permeability ; geologic carbon storage ; multi-phase flow simulation ; life cycle analysis ; CO2-enhanced oil recovery ; anthropogenic CO2 ; global warming potential ; greenhouse gas (GHG) ; carbon storage ; CO2-EOR ; CO2 sequestration ; geomechanics ; reservoir fluid flow modelling ; tightness of caprock ; CO2 leakage ; threshold pressure ; reactive solute transport ; multi-phase fluid flow ; Farnsworth Unit ; STOMP ; GEM ; TOUGHREACT ; 4D ; time lapse ; CO2 ; EOR ; WAG ; sequestration ; monitoring ; carbon sequestration ; caprock integrity ; noble gas migration ; seal by-pass ; carbon dioxide storage ; storage efficiency factor ; probabilistic ; expectation curve ; Monte Carlo ; Farnsworth Field ; petroleum system modeling ; CO2 migration ; n/a ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::P Mathematics & science::PH Physics
    Language: English
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  • 8
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    Logos Verlag Berlin | Logos Verlag Berlin
    Publication Date: 2024-04-04
    Description: Listeners with hearing impairments have difficulties understanding speech in the presence of background noise. Although prosthetic devices such as hearing aids and cochlear implants may improve the hearing capability, listeners with hearing impairments still complain about their speech perception in the presence of noise. The basic tonal audiometry only gives a cursory idea of the degree of difficulty in spoken communication caused by hearing loss because it does not assess the ability to understand speech. Therefore, the use of speech-in-noise tests to measure hearing loss in complex scenes is an integral part of a patient's audiological study. Most research has concentrated on studying only stationary sound sources, but in natural acoustic scenes, conversations may become very difficult to understand in the presence of moving sound sources such as a moving talker or a passing vehicle. Therefore, this thesis deals with quantifying speech perception in the presence of moving maskers through virtual sound sources presented binaurally via headphones. Significant differences in several conditions were found, revealing that the auditory system assesses differently the moving maskers than the stationary maskers. Therefore, the inclusion of moving conditions in clinical listening tests is recommended, in order to assess speech-in-noise perception in a more realistic environment.
    Keywords: Science ; thema EDItEUR::P Mathematics and Science::PD Science: general issues
    Language: English
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  • 9
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2022-08-12
    Description: This book focuses on the much-needed efforts to design sustainable, well-being-oriented economies, based on appropriate energy use in all sectors of a country´s development. Carbon neutrality, energy efficiency and effectiveness, renewable energies, circular economy strategies, environmental consequences of energy use, engagement and empowerment of local communities in decision making, energy and environmental impacts of consumer behavior, and finally science-based approaches towards sustainable production and consumption are the main focus of the research activities described within this book. An effort to go beyond energy scarcity, to promote energy communities, to explore new technologies, and overall, to understand and address the population-lifestyle-energy nexus towards increased and shared well-being is the final result jointly provided by the book authors. All in all, the aim is for the book to be the starting point of a deeper research and understanding of the importance of a radical improvement in energy use in society, beyond considering energy as just a resource in the world market. Circular economy aspects are also investigated, showing the energy saving potential associated with the appropriate design and recovery of material resources.
    Keywords: energy consumption for heating ; CO2 emissions ; income ; buildings ; cities ; Spain ; emissions ; CO2 ; GWP ; functional unit ; natural gas ; SOFC ; optimal layout ; wake effect ; fluctuation ; wind farm ; ramping rate ; energy policy investments ; cost-benefit analysis ; social discount rate ; dual discounting ; energy transition index ; energy consumer ; behavioural model ; consumer segmentation ; socioeconomic characteristics ; end user profile ; energy awareness ; electricity ; efficiency ; multifractal detrended fluctuation analysis ; multifractality ; MLM ; rolling window ; smart grids ; demand response ; island communities ; social acceptance ; technology readiness ; sustainability ; Italy ; Ireland ; multi-regional input–output ; nexus ; trade ; Belt and Road ; renewable energy ; potential ; Indonesia ; literature review ; 100% renewables ; scenario ; energy savings ; circular economy ; construction and demolition waste ; recycled aggregates ; agri-food by-products ; urban building energy model ; UBEM ; level of detail ; LOD ; shadowing ; thermal zoning ; s-LCA ; LCA ; energy communities ; empowerment ; energy justice ; resource sustainability ; exergy ; exergy cost accounting ; exergy cost of biological resources ; decarbonisation ; climate neutrality ; industrial energy saving ; strategic decision making ; net-zero ; road mapping ; energy efficiency ; ideal mix ; sustainability strategy ; energy efficiency index ; n/a ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::P Mathematics & science::PH Physics
    Language: English
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  • 10
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    Logos Verlag Berlin | Logos Verlag Berlin
    Publication Date: 2024-04-04
    Description: Die Teilchenphysik als Teilgebiet der modernen Physik gewinnt zunehmend an Bedeutung im schulischen Physikunterricht. In dieser Arbeit wird erstmalig das von Lehrkräften benötigte Fachwissen zur Teilchenphysik modelliert, wobei Fachwissen als ein Teil des Professionswissens verstanden wird. Als Fachwissensdimensionen werden die Inhaltsbereiche und die Wissensarten in den Fokus genommen, für welche jeweils Subfacetten identifiziert und präzise beschrieben werden. Nach einem überblick über die wesentlichen Ideen der Teilchenphysik wird in der Arbeit die sukzessive Modellierung des Fachwissens im Rahmen einer qualitativ und quantitativ angelegten Delphi-Studie vorgestellt. In drei Befragungsrunden wurden zwischen 35 und 65 internationale Expertinnen und Experten aus der teilchenphysikbezogenen Forschung (Fachwissenschaft und Fachdidaktik) und öffentlichkeitsarbeit (u.a. Wissenschaftsjournalismus) sowie erfahrene Lehrkräfte zu den für das Fachwissen relevanten Themen der Teilchenphysik befragt. Empirische Analysen der Befragungsrunden ergaben, dass sich die Dimension Inhaltsbereiche im deklarativen Wissen aus zehn teilchenphysikalischen Themen (z.B. Teilchen in der Hochenergiephysik, die vier fundamentalen Wechselwirkungen) zusammensetzt, von welchen sechs als besonders relevant eingeschätzt wurden. Im Anschluss an die letzte Befragungsrunde wurde theoriegeleitet eine erste Modellierung der Inhaltsbereiche für die Wissensarten des prozeduralen und konditionalen Wissens vorgenommen.
    Keywords: Science ; Education ; Science ; Physics ; thema EDItEUR::P Mathematics and Science::PD Science: general issues ; thema EDItEUR::J Society and Social Sciences::JN Education ; thema EDItEUR::P Mathematics and Science::PH Physics
    Language: English
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