The 2023 MDPI Annual Report has
been released!
 
17 pages, 760 KiB  
Article
Parameter Estimation of Birnbaum-Saunders Distribution under Competing Risks Using the Quantile Variant of the Expectation-Maximization Algorithm
by Chanseok Park and Min Wang
Mathematics 2024, 12(11), 1757; https://doi.org/10.3390/math12111757 (registering DOI) - 5 Jun 2024
Abstract
Competing risks models, also known as weakest-link models, are utilized to analyze diverse strength distributions exhibiting multi-modality, often attributed to various types of defects within the material. The weakest-link theory posits that a material’s fracture is dictated by its most severe defect. However, [...] Read more.
Competing risks models, also known as weakest-link models, are utilized to analyze diverse strength distributions exhibiting multi-modality, often attributed to various types of defects within the material. The weakest-link theory posits that a material’s fracture is dictated by its most severe defect. However, multimodal problems can become intricate due to potential censoring, a common constraint stemming from time and cost limitations during experiments. Additionally, determining the mode of failure can be challenging due to factors like the absence of suitable diagnostic tools, costly autopsy procedures, and other obstacles, collectively referred to as the masking problem. In this paper, we investigate the distribution of strength for multimodal failures with censored data. We consider both full and partial maskings and present an EM-type parameter estimate for the Birnbaum-Saunders distribution under competing risks. We compare the results with those obtained from other distributions, such as lognormal, Weibull, and Wald (inverse-Gaussian) distributions. The effectiveness of the proposed method is demonstrated through two illustrative examples, as well as an analysis of the sensitivity of parameter estimates to variations in starting values. Full article
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15 pages, 9031 KiB  
Article
European Smalt in 17th-Century Japan: Porcelain Decoration and Sacred Art
by Riccardo Montanari, Philippe Colomban, Maria Francesca Alberghina, Salvatore Schiavone and Claudia Pelosi
Heritage 2024, 7(6), 3080-3094; https://doi.org/10.3390/heritage7060145 (registering DOI) - 5 Jun 2024
Abstract
Japanese art tradition, contrary to the case of China, is characterized by an efficient and continued, although mostly undocumented, use of smalt from the late 16th century onward. Recent studies have successfully identified this pigment, the cobalt-colored glass that spread throughout the Old [...] Read more.
Japanese art tradition, contrary to the case of China, is characterized by an efficient and continued, although mostly undocumented, use of smalt from the late 16th century onward. Recent studies have successfully identified this pigment, the cobalt-colored glass that spread throughout the Old Continent during the Renaissance period, as the coloring agent employed for overglaze-blue enameling on Japanese porcelains produced at the kilns of Arita (the porcelain production center of Japan) from the early 1640s until the 20th century. Fragmentary evidence of the use of smalt in Japanese sacred art has also been reported, yet its earliest incorporation into such a type of traditional art form could not be identified. In order to resolve this crucial issue, portable EDXRF was employed for the non-destructive analyses of Japanese porcelains and sacred images bearing blue decoration. Scientific analysis allowed, for the first time ever, to establish a clear timeline of smalt use. Furthermore, this evidence and the literature data both agree, leading to the identification of the origin of the blue material used on both art productions. Full article
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16 pages, 1850 KiB  
Article
A Qualitative Investigation of Parent Perceptions of Home Exercises for Congenital Muscular Torticollis
by Audrey Stitt and Rebecca Operacz
Children 2024, 11(6), 689; https://doi.org/10.3390/children11060689 (registering DOI) - 5 Jun 2024
Abstract
The purpose of this qualitative study was to describe parent perceptions of the home exercise program (HEP) for infants with congenital muscular torticollis (CMT), and how these perceptions evolved over a physical therapy (PT) plan of care. Twelve participants were recruited from a [...] Read more.
The purpose of this qualitative study was to describe parent perceptions of the home exercise program (HEP) for infants with congenital muscular torticollis (CMT), and how these perceptions evolved over a physical therapy (PT) plan of care. Twelve participants were recruited from a pediatric PT clinic, and nine completed interviews at three time points. Qualitative description and an iterative approach for thematic analysis of 27 interviews yielded three themes that corresponded to the research questions. The participants’ responses were categorized into three main themes: (1) parents’ perceptions of three key exercises within the HEP, (2) internal and external sources of stress, and (3) sources of empowerment and disempowerment. Regarding the HEP, parents articulated common sentiments for three frequently prescribed exercises for the management of CMT: (1) tummy time was the fast favorite, (2) ipsilateral cervical rotation was perceived as stressful, and (3) contralateral cervical lateral flexion felt uncomfortable. Additionally, participants disclosed internal and external sources of stress (guilt, uncertainty, and the demands of returning to work) and sources of disempowerment (inconsistent messaging frompractitioners, feeling overwhelmed) and empowerment (being able to see the bigger picture and clear communication and education about the diagnosis) with respect to managing their infant’s CMT. These themes provide insight into the evolution of parent perceptions over a PT plan of care for CMT. Participants’ insights suggest a need for consistent messaging regarding the diagnosis and evidence-based management of CMT, addressing parent stress, and modifying how exercises are taught. This study contributes updated research on parents’ experiences with physical therapy and the HEP for their infant’s CMT. Full article
(This article belongs to the Special Issue New Trends in Physical Therapy for Children)
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13 pages, 2038 KiB  
Protocol
Development and Optimization of a Lactate Dehydrogenase Assay Adapted to 3D Cell Cultures
by Héloïse Castiglione, Lucie Madrange, Thomas Lemonnier, Jean-Philippe Deslys, Frank Yates and Pierre-Antoine Vigneron
Organoids 2024, 3(2), 113-125; https://doi.org/10.3390/organoids3020008 (registering DOI) - 5 Jun 2024
Abstract
In recent years, 3D cell culture systems have emerged as sophisticated in vitro models, providing valuable insights into human physiology and diseases. The transition from traditional 2D to advanced 3D cultures has introduced novel obstacles, complicating the characterization and analysis of these models. [...] Read more.
In recent years, 3D cell culture systems have emerged as sophisticated in vitro models, providing valuable insights into human physiology and diseases. The transition from traditional 2D to advanced 3D cultures has introduced novel obstacles, complicating the characterization and analysis of these models. While the lactate dehydrogenase (LDH) activity assay has long been a standard readout for viability and cytotoxicity assessments in 2D cultures, its applicability in long-term 3D cultures is hindered by inappropriate normalization and low LDH stability over time. In response to these challenges, we propose an optimization of LDH assays, including a crucial normalization step based on total protein quantification and a storage method using an LDH preservation buffer. We applied it to compare unexposed cerebral organoids with organoids exposed to a toxic dose of valproic acid, and showed efficient normalization of cellular viability as well as enhanced LDH stability within the buffer. Importantly, normalized LDH activity results obtained were independent of organoid dimension and cell density. This refined LDH assay, tailored to address 3D culture constraints, allows for the transposition of this routine test from 2D to 3D cultures. Full article
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12 pages, 8897 KiB  
Case Report
Endovascular Stenting for Idiopathic Stenosis of the Superior Mesenteric Vein: A Case Report
by Mugur Cristian Grasu, Radu Lucian Dumitru, Gina-Ionela Rusu-Munteanu, Mariana Mihaila, Mircea Manuc and Ioana Gabriela Lupescu
Diagnostics 2024, 14(11), 1187; https://doi.org/10.3390/diagnostics14111187 (registering DOI) - 5 Jun 2024
Abstract
Idiopathic superior mesenteric vein (SMV) stenosis, where no clear causative factor is identifiable, remains a clinical rarity. We present a detailed case report of a patient with idiopathic stenosis of the SMV who underwent successful endovascular stenting. This report outlines the patient’s clinical [...] Read more.
Idiopathic superior mesenteric vein (SMV) stenosis, where no clear causative factor is identifiable, remains a clinical rarity. We present a detailed case report of a patient with idiopathic stenosis of the SMV who underwent successful endovascular stenting. This report outlines the patient’s clinical presentation, diagnostic imaging findings, procedural approach by the interventional radiology team, and subsequent management. Endovascular stenting is a viable therapeutic option for patients with idiopathic SMV stenosis. This case demonstrates that with appropriate interventional and post-procedural management, long-term stent patency and thrombosis prevention can be achieved. The success of this case encourages further investigation into endovascular treatments for venous stenoses. Full article
(This article belongs to the Special Issue Advances in Diagnostic and Interventional Radiology)
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20 pages, 1842 KiB  
Article
A New Automated Algorithm for Optimization of Measurements for Achieving the Required Accuracy of a Geodetic Network
by Ondřej Michal and Martin Štroner
Appl. Sci. 2024, 14(11), 4890; https://doi.org/10.3390/app14114890 (registering DOI) - 5 Jun 2024
Abstract
The optimization of measurements in a geodetic network (second-order design) has been investigated in the past; however, the practical usability of the outcomes of most of such studies is doubtful. Hence, we have proposed a new automated optimization algorithm, taking into account the [...] Read more.
The optimization of measurements in a geodetic network (second-order design) has been investigated in the past; however, the practical usability of the outcomes of most of such studies is doubtful. Hence, we have proposed a new automated optimization algorithm, taking into account the practical aspects of total station measurements. The algorithm consists of four parallel partial algorithms, of which one is subsequently automatically selected—the one meeting the geodetic network accuracy requirements with the lowest number of necessary measurements. We tested the algorithm (and individual partial algorithms) on four geodetic networks designed to resemble real-world networks with 50–500 modifications to each of those networks in individual tests. The results indicate that (i) the results achieved by the combined algorithm are close to the optimal results and (ii) none of the four partial algorithms universally performs the best, implying that the combination of the four partial algorithms is necessary for achieving the best possible results of geodetic network optimization. Full article
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18 pages, 2336 KiB  
Article
Free Salivary Amino Acid Profile in Breast Cancer: Clinicopathological and Molecular Biological Features
by Lyudmila V. Bel’skaya, Elena A. Sarf and Denis V. Solomatin
Curr. Issues Mol. Biol. 2024, 46(6), 5614-5631; https://doi.org/10.3390/cimb46060336 (registering DOI) - 5 Jun 2024
Abstract
The study of salivary amino acid profiles has attracted the attention of researchers, since amino acids are actively involved in most metabolic processes, including breast cancer. In this study, we analyzed the amino acid profile of saliva in a sample including all molecular [...] Read more.
The study of salivary amino acid profiles has attracted the attention of researchers, since amino acids are actively involved in most metabolic processes, including breast cancer. In this study, we analyzed the amino acid profile of saliva in a sample including all molecular biological subtypes of breast cancer to obtain a more complete picture and evaluate the potential utility of individual amino acids or their combinations for diagnostic purposes. This study included 116 patients with breast cancer, 24 patients with benign breast disease, and 25 healthy controls. From all patients, strictly before the start of treatment, saliva samples were collected, and the quantitative content of 26 amino acids was determined. Statistically significant differences between the three groups are shown in the content of Asp, Gly, Leu + Ile, Orn, Phe, Pro, Thr, and Tyr. To differentiate the three groups from each other, a decision tree was built. To construct it, we selected those amino acids for which the change in concentrations in the subgroups was multidirectional (GABA, Hyl, Arg, His, Pro, and Car). For the first time, it is shown that the amino acid profile of saliva depends on the molecular biological subtype of breast cancer. The most significant differences are shown for the luminal B HER2-positive and TNBC subgroups. In our opinion, it is critically important to consider the molecular biological subtype of breast cancer when searching for potential diagnostic markers. Full article
(This article belongs to the Collection Molecular Mechanisms in Human Diseases)
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25 pages, 10960 KiB  
Review
Review of Soil Creep Characteristics and Advances in Modelling Research
by Yanchao Liu, Feng Huang, Yanhui Cao, Fang Jin, Guihe Wang and Wei Hou
Buildings 2024, 14(6), 1668; https://doi.org/10.3390/buildings14061668 (registering DOI) - 5 Jun 2024
Abstract
Creep is recognised to be an important physical property of soils, exerting a profound influence on the stability of structures. In order to gain a comprehensive understanding of the advancements and focal points in soil creep research, the relevant literature was accessed from [...] Read more.
Creep is recognised to be an important physical property of soils, exerting a profound influence on the stability of structures. In order to gain a comprehensive understanding of the advancements and focal points in soil creep research, the relevant literature was accessed from the Web of Science Core Collection database, totalling 3907 papers (as of 25 March 2024). Statistical analyses on publication volume, keyword co-occurrence, and clustering were conducted using the visualization software VOSviewer (1.6.20). The current hotspots in soil creep research were identified, and a systematic review was undertaken on the influencing factors of soil creep and the corrective methods of creep models. The research findings indicate that the number of papers on creep research exhibits a trend of increase followed by a decrease over time. Developed countries, such as those in Europe and America, initiated research in this field earlier than developing countries like China. Currently, the research focus is primarily centred on creep models. Significant differences exist in the creep deformation of soils under different influencing factors, with soil microstructure, moisture content, and stress path being important factors affecting soil creep deformation. Creep deformation in unsaturated soils primarily considers the influence of matric suction, while indoor creep tests are mainly conducted based on vertical loading, which differs significantly from the stress conditions experienced by soils in engineering construction sites. Currently, adjustments to soil parameters are mainly made through single-factor adjustments involving stress, time, damage, and matric suction to determine creep models under specific influencing factors, and then to modify the models accordingly. However, research on the creep deformation mechanism and creep models under multiple factors is relatively limited. Future research directions are expected to focus on the microscopic scale of creep mechanisms and multi-factor creep models. Full article
(This article belongs to the Section Building Materials, and Repair & Renovation)
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16 pages, 1622 KiB  
Article
Improving the Robustness of the Theil-Sen Estimator Using a Simple Heuristic-Based Modification
by Artur Bal
Symmetry 2024, 16(6), 698; https://doi.org/10.3390/sym16060698 (registering DOI) - 5 Jun 2024
Abstract
One of the most widely used robust regression methods for solving simple linear regression problems is the Theil-Sen (TS) estimator. This estimator has some notable advantages; however, it does not belong to the most robust estimation methods (called high-breakdown estimators) and is prone [...] Read more.
One of the most widely used robust regression methods for solving simple linear regression problems is the Theil-Sen (TS) estimator. This estimator has some notable advantages; however, it does not belong to the most robust estimation methods (called high-breakdown estimators) and is prone to outliers whose distribution is highly asymmetric with respect to the correct data points. This paper presents a modification of the TS estimator, the Robustified Theil-Sen (RTS) estimator. The new method uses a heuristic-based selection procedure to reduce the number of initial estimates of the regression function parameters computed with at least one outlier, thereby improving the regression results. The use of this heuristic procedure only slightly increases the computational time required for using the RTS estimator compared to the TS estimator. Preliminary results of two numerical experiments presented in the paper show that the RTS estimator outperforms other comparable estimators, i.e., the TS estimator and the repeated median estimator, in terms of robustness. The results presented also suggest that the breakpoint value (which is a measure of the robustness of estimators) of the RTS estimator is higher than the breakpoint value of the TS estimator and equal to the breakpoint value of the high-breakpoint estimators. Full article
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26 pages, 9675 KiB  
Article
Improving Green Literacy and Environmental Culture Associated with Youth Participation in the Circular Economy: A Case Study of Vietnam
by Phuong Mai Tran, Thuy Nguyen, Huu-Dung Nguyen, Nguyen An Thinh, Nguyen Duc Lam, Nguyen Thi Huyen and Van Quy Khuc
Urban Sci. 2024, 8(2), 63; https://doi.org/10.3390/urbansci8020063 (registering DOI) - 5 Jun 2024
Abstract
The circular economy (CE), a sustainability concept that promotes resource efficiency and waste reduction, has garnered significant popularity in recent years due to its potential to address pressing environmental and economic challenges. This study applies the Bayesian Mindsponge Mindspongeconomics (BMM) framework/analytic method, based [...] Read more.
The circular economy (CE), a sustainability concept that promotes resource efficiency and waste reduction, has garnered significant popularity in recent years due to its potential to address pressing environmental and economic challenges. This study applies the Bayesian Mindsponge Mindspongeconomics (BMM) framework/analytic method, based on the Bayesian Mindsponge Framework (BMF), to the factors influencing young adults’ pro-environmental behavior and their purchases of green products at different price levels. The findings indicate that young adults who are knowledgeable about the CE and who value environmental protection and energy conservation are more likely to engage in waste sorting, while the factors that affect their willingness to pay (WTP) more for green and energy-saving products vary at different price tiers. This study demonstrates that knowledge of the CE, daily waste sorting habits, and environmental concern positively impact young adults’ WTP for products that are priced 5%, 10%, and 15% higher, respectively. Furthermore, this study also highlights the potential of educational programs and cultural influences in nurturing a generation that prioritizes environmental value. This research integrates multidisciplinary perspectives and offers practical implications for policymakers, educators, and businesses seeking to promote green literacy and foster an environmental culture among the youth, contributing to the broader goals of green transformation and sustainable development associated with the CE and the green economy, especially in the urban areas of emerging countries and beyond. Full article
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13 pages, 6032 KiB  
Article
Extrusion of Neutrophil Extracellular Traps (NETs) Negatively Impacts Canine Sperm Functions: Implications in Reproductive Failure
by Marion León, Claudia Moya, Rodrigo Rivera-Concha, Felipe Pezo, Pamela Uribe, Mabel Schulz, Raúl Sánchez, Anja Taubert, Carlos Hermosilla and Fabiola Zambrano
Int. J. Mol. Sci. 2024, 25(11), 6216; https://doi.org/10.3390/ijms25116216 (registering DOI) - 5 Jun 2024
Abstract
Reproductive failure in dogs is often due to unknown causes, and correct diagnosis and treatment are not always achieved. This condition is associated with various congenital and acquired etiologies that develop inflammatory processes, causing an increase in the number of leukocytes within the [...] Read more.
Reproductive failure in dogs is often due to unknown causes, and correct diagnosis and treatment are not always achieved. This condition is associated with various congenital and acquired etiologies that develop inflammatory processes, causing an increase in the number of leukocytes within the female reproductive tract (FRT). An encounter between polymorphonuclear neutrophils (PMNs) and infectious agents or inflammation in the FRT could trigger neutrophil extracellular traps (NETs), which are associated with significantly decreased motility and damage to sperm functional parameters in other species, including humans. This study describes the interaction between canine PMNs and spermatozoa and characterizes the release of NETs, in addition to evaluating the consequences of these structures on canine sperm function. To identify and visualize NETs, May–Grünwald Giemsa staining and immunofluorescence for neutrophil elastase (NE) were performed on canine semen samples and sperm/PMN co-cultures. Sperm viability was assessed using SYBR/PI and acrosome integrity was assessed using PNA-FITC/PI by flow cytometry. The results demonstrate NETs release in native semen samples and PMN/sperm co-cultures. In addition, NETs negatively affect canine sperm function parameters. This is the first report on the ability of NETs to efficiently entrap canine spermatozoa, and to provide additional data on the adverse effects of NETs on male gametes. Therefore, NETs formation should be considered in future studies of canine reproductive failure, as these extracellular fibers and NET-derived pro-inflammatory capacities will impede proper oocyte fertilization and embryo implantation. These data will serve as a basis to explain certain reproductive failures of dogs and provide new information about triggers and molecules involved in adverse effects of NETosis for domestic pet animals. Full article
(This article belongs to the Special Issue Neutrophil Extracellular Traps (NETs) in Immunity and Diseases 2.0)
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27 pages, 946 KiB  
Article
Understanding the Role of Brand Attachment in the Automotive Luxury Brand Segment
by Abílio Bragança Milheiro, Bruno Barbosa Sousa, Vasco Ribeiro Santos, Catarina Bragança Milheiro and Estela Vilhena
Adm. Sci. 2024, 14(6), 119; https://doi.org/10.3390/admsci14060119 (registering DOI) - 5 Jun 2024
Abstract
The automotive trade is one of the main drivers of world economies, contributing to the sustainability and competitiveness of countries at a global level. The luxury sub-segment is the one facing the most significant growth and the one which presents the greatest challenges [...] Read more.
The automotive trade is one of the main drivers of world economies, contributing to the sustainability and competitiveness of countries at a global level. The luxury sub-segment is the one facing the most significant growth and the one which presents the greatest challenges in the business-to-consumer (B2C) relationship. Brand Attachment refers to the cognitive and effective connection between consumers and “their” brands. The central objective of this research is to analyze, measure, and understand the impact of Brand Attachment on consumer behavior, in the specific context of the luxury segment of the automotive market. The conceptual model that is proposed seeks to highlight and study the possible connections and associations between Brand Attachment, satisfaction, commitment, trust, expectations, and loyalty with the brand selected for this study, the luxury automotive brand Porsche. The selected methodology was based on a case study based in the Portuguese market and the application of a questionnaire to customers of Porsche from Portugal. The results obtained through the empirical data allowed us to reach the conclusion that respondents who have a stronger affective and emotional connection with Porsche (intense level of Brand Attachment) tend to be those who are more satisfied and confident with the brand and are, consequently, more loyal. This study represents an important contribution to research on Brand Attachment in marketing and strategic management in the automotive sector, particularly in the Portuguese market, and supports the definition of the best marketing strategies to promote fruitful B2C relationships. Full article
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14 pages, 1255 KiB  
Review
Neuroprotective Effects of Curcumin in Neurodegenerative Diseases
by Giuseppe Genchi, Graziantonio Lauria, Alessia Catalano, Alessia Carocci and Maria Stefania Sinicropi
Foods 2024, 13(11), 1774; https://doi.org/10.3390/foods13111774 (registering DOI) - 5 Jun 2024
Abstract
Curcumin, a hydrophobic polyphenol extracted from the rhizome of Curcuma longa, is now considered a candidate drug for the treatment of neurological diseases, including Parkinson’s Disease (PD), Alzheimer’s Disease (AD), Huntington’s Disease (HD), Multiple Sclerosis (MS), Amyotrophic Lateral Sclerosis (ALS), and prion [...] Read more.
Curcumin, a hydrophobic polyphenol extracted from the rhizome of Curcuma longa, is now considered a candidate drug for the treatment of neurological diseases, including Parkinson’s Disease (PD), Alzheimer’s Disease (AD), Huntington’s Disease (HD), Multiple Sclerosis (MS), Amyotrophic Lateral Sclerosis (ALS), and prion disease, due to its potent anti-inflammatory, antioxidant potential, anticancerous, immunomodulatory, neuroprotective, antiproliferative, and antibacterial activities. Traditionally, curcumin has been used for medicinal and dietary purposes in Asia, India, and China. However, low water solubility, poor stability in the blood, high rate of metabolism, limited bioavailability, and little capability to cross the blood–brain barrier (BBB) have limited the clinical application of curcumin, despite the important pharmacological activities of this drug. A variety of nanocarriers, including liposomes, micelles, dendrimers, cubosome nanoparticles, polymer nanoparticles, and solid lipid nanoparticles have been developed with great success to effectively deliver the active drug to brain cells. Functionalization on the surface of nanoparticles with brain-specific ligands makes them target-specific, which should significantly improve bioavailability and reduce harmful effects. The aim of this review is to summarize the studies on curcumin and/or nanoparticles containing curcumin in the most common neurodegenerative diseases, highlighting the high neuroprotective potential of this nutraceutical. Full article
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15 pages, 10406 KiB  
Article
Enhanced Mechanical Properties of Ti/Mg Laminated Composites Using a Differential Temperature Rolling Process under a Protective Atmosphere
by Zichen Qi, Zhengchi Jia, Xiaoqing Wen, Hong Xiao, Xiao Liu, Dawei Gu, Bo Chen and Xujian Jiang
Materials 2024, 17(11), 2753; https://doi.org/10.3390/ma17112753 (registering DOI) - 5 Jun 2024
Abstract
Addressing the issue of low bonding strength in Ti/Mg laminated composites due to interfacial oxidation, this study employs a differential temperature rolling method using longitudinal induction heating to fabricate Ti/Mg composite plates. The entire process is conducted under an argon gas protective atmosphere, [...] Read more.
Addressing the issue of low bonding strength in Ti/Mg laminated composites due to interfacial oxidation, this study employs a differential temperature rolling method using longitudinal induction heating to fabricate Ti/Mg composite plates. The entire process is conducted under an argon gas protective atmosphere, which prevents interfacial oxidation while achieving uniform deformation. The effects of reduction on the mechanical properties and microstructure of the composite plates are thoroughly investigated. Results indicate that as the reduction increases, the bonding strength gradually increases, mainly attributed to the increased mechanical interlocking area and a broader element diffusion layer. This corresponds to a transition from a brittle to a ductile fracture at the microscopic tensile–shear fracture surface. When the reduction reaches 47.5%, the Ti/Mg interfacial strength reaches 63 MPa, which is approximately a 20% improvement compared to the bonded strength with previous oxidation at the interface. Notably, at a low reduction of 17.5%, the bonding strength is significantly enhanced by about one time. Additionally, it was found that a strong bonded interface at a high reduction is beneficial in hindering the propagation of interfacial cracks during tensile testing, enhancing the ability of the Ti/Mg composite plates to resist interfacial delamination. Full article
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14 pages, 1524 KiB  
Article
Unveiling Climate Trends and Future Projections in Southeastern Brazil: A Case Study of Brazil’s Historic Agricultural Heritage
by Lucas da Costa Santos, Lucas Santos do Patrocínio Figueiró, Fabiani Denise Bender, Jefferson Vieira José, Adma Viana Santos, Julia Eduarda Araujo, Evandro Luiz Mendonça Machado, Ricardo Siqueira da Silva and Jéfferson de Oliveira Costa
Sustainability 2024, 16(11), 4811; https://doi.org/10.3390/su16114811 (registering DOI) - 5 Jun 2024
Abstract
The intricate relationship between climate and society in a given region demands a profound understanding of climate patterns, especially in agricultural areas like Diamantina, Minas Gerais (MG), recognized by the Food and Agriculture Organization (FAO) as the birthplace of the first Globally Important [...] Read more.
The intricate relationship between climate and society in a given region demands a profound understanding of climate patterns, especially in agricultural areas like Diamantina, Minas Gerais (MG), recognized by the Food and Agriculture Organization (FAO) as the birthplace of the first Globally Important Agricultural Heritage System (GIAHS) in Brazil, situated in the southwest region of the country. Given the growing concerns about climate change, we conducted a meticulous analysis of the climatic characteristics of Diamantina-MG. To achieve this, we examined historical meteorological data from 1973 to 2022, employing the Mann–Kendall and Sen’s slope tests to analyze trends. Additionally, we utilized three global climate models (GCMs) under different shared socioeconomic pathways (SSPs) to predict future climate scenarios (2021–2100) based on the projections of the sixth phase of the Coupled Model Intercomparison Project (CMIP6). Furthermore, we used Köppen and Thornthwaite climate classification methodologies to characterize both the current and future climate conditions of the region. Our results indicate that, historically, Diamantina-MG has experienced significant increases in minimum temperature, indicating a warmer climate in recent decades. For temperature, the projections show a consensus among models, projecting a continuous increase, potentially reaching up to 5.8 °C above the historical average temperature (19.2 °C) by the end of the century. Regarding rainfall projections, they show greater uncertainty, with discrepancies among models observed until 2060. However, specifically for the second half of the century (2060–2100), the models agree that there will be increases in annual rainfall. Regarding the climatic types of the region, we found that the current Köppen Cwb and Thornthwaite B3rB’3a’ classifications could shift to Aw and B1wA’a’, representing a humid tropical savanna climate with longer periods of water deficiency, considering the impacts resulting from increased air temperature and evapotranspiration. In summary, the study’s results indicate that climate changes are occurring and are likely to intensify in the Jequitinhonha Valley region, MG, in the future. The analysis of these data, from the perspective of the Brazilian GIAHS sustainability, reveals the importance of considering adaptation and mitigation measures to ensure the resilience of agricultural systems and local communities in the region that face these significant environmental changes. Full article
(This article belongs to the Section Sustainable Agriculture)
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9 pages, 2907 KiB  
Article
Determination of Low Concentrations of Mercury Based on the Electrodeposition Time
by Kenshin Takemura, Wataru Iwasaki, Nobutomo Morita, Shinya Ohmagari, Yasunori Takaki, Hitomi Fukaura and Kazuya Kikunaga
Nanomaterials 2024, 14(11), 981; https://doi.org/10.3390/nano14110981 (registering DOI) - 5 Jun 2024
Abstract
Soil plays a crucial role in human health through its impact on food and habitation. However, it often contains toxic heavy metals, with mercury being particularly hazardous when methylated. Currently, high-sensitivity, rapid detection of mercury is achievable only through electrochemical measurements. These measurements [...] Read more.
Soil plays a crucial role in human health through its impact on food and habitation. However, it often contains toxic heavy metals, with mercury being particularly hazardous when methylated. Currently, high-sensitivity, rapid detection of mercury is achievable only through electrochemical measurements. These measurements require pretreatment of the soil sample and the preparation of a calibration curve tailored to the sample’s condition. In this study, we developed a method to determine the environmental standard value of mercury content in soil by significantly reducing the pretreatment process. Our approach involves analyzing current peaks from electrodeposition times using specific electrodes and solvent settings. This method demonstrates low error rates under low concentration conditions and can detect mercury levels as low as 0.5 ppb in soil leachate and reagent dilution series. This research facilitates the determination of low mercury concentrations in solutions containing various soil micro-compounds without the need for calibration curves. Full article
(This article belongs to the Special Issue Nanomaterials: Electrochemistry and Electro-Analytical Application)
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23 pages, 1927 KiB  
Article
D2Former: Dual-Domain Transformer for Change Detection in VHR Remote Sensing Images
by Huanhuan Zheng, Hui Liu, Lei Lu, Shiyin Li and Jiyan Lin
Electronics 2024, 13(11), 2204; https://doi.org/10.3390/electronics13112204 (registering DOI) - 5 Jun 2024
Abstract
Computational intelligence technologies have been extensively applied for the interpretation of remote sensing imagery. Recently, the computational-intelligence-based Transformer change detection (CD) approach has attracted increasing attention. However, the current Transformer-based CD method can better capture global features, but there is no good solution [...] Read more.
Computational intelligence technologies have been extensively applied for the interpretation of remote sensing imagery. Recently, the computational-intelligence-based Transformer change detection (CD) approach has attracted increasing attention. However, the current Transformer-based CD method can better capture global features, but there is no good solution for the loss of local detail information. For this reason, introducing semantic and frequency information from the perspective of a dual-domain can be beneficial for improving the representation of detailed features to improve CD performance. To overcome this limitation, a dual-domain Transformer (D2Former) is proposed for CD. Firstly, we adopt a semantic tokenizer to capture the semantic information, which promotes the enrichment and refinement of semantic change information in the Transformer. Secondly, a frequency tokenizer is introduced to acquire the frequency information of the features, which offers the proposed D2Former another aspect and dimension to enhance the ability to detect change information. Therefore, the proposed D2Former employs dual-domain tokenizers to acquire and fuse the feature representation with rich semantic and frequency information, which can refine the features to acquire more fine-grained CD ability. Extensive experiments on three CD benchmark datasets demonstrate that the proposed D2Former obviously outperforms some other existing approaches. The results present the competitive performance of our method on the WHU-CD, LEVIR-CD, and GZ-CD datasets, for which it achieved F1-Score metrics of 92.85%, 90.60%, and 87.02%, respectively. Full article
(This article belongs to the Topic Computational Intelligence in Remote Sensing: 2nd Edition)
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10 pages, 1504 KiB  
Article
Chemical Control of Coffee Berry Borer Using Unmanned Aerial Vehicle under Different Operating Conditions
by João Paulo Arantes Rodrigues da Cunha, Luana de Lima Lopes and Cleyton Batista de Alvarenga
AgriEngineering 2024, 6(2), 1639-1648; https://doi.org/10.3390/agriengineering6020093 (registering DOI) - 5 Jun 2024
Abstract
The application of pesticides using unmanned aerial vehicles (UAVs) has grown, but there is a lack of information to support more efficient applications. Using a DJI AGRAS-MG-1P octocopter equipped with different spray tips, this study sought to explore spray deposition (leaves and fruit) [...] Read more.
The application of pesticides using unmanned aerial vehicles (UAVs) has grown, but there is a lack of information to support more efficient applications. Using a DJI AGRAS-MG-1P octocopter equipped with different spray tips, this study sought to explore spray deposition (leaves and fruit) and efficacy of chlorpyrifos on control of coffee berry borer at different spray volumes and flight heights. The study was conducted in an Arabica coffee plantation. The study consisted of eight treatments and four replications in a 2 × 2 × 2 factorial scheme: two flight heights (1.5 and 3.0 m), two spray tips (hollow cone and flat fan), and two spray volumes (10 and 15 L ha−1). Deposition was assessed by detecting a tracer in the coffee leaves and fruit using spectrophotometry. The coffee berry borer-control efficacy trial was conducted in two areas by evaluating the percentage of damaged fruit 60 days after two insecticide applications. The flight height of 1.5 m promoted higher spray deposition on leaves and fruit and a lower incidence of damaged fruit. Flat fan spray tips resulted in higher spray deposition on the leaves, not interfering with the deposition on fruit or the coffee berry borer control. Increasing the spray volume from 10 to 15 L ha−1 did not increase spray deposition on coffee leaves and fruit. Chlorpyrifos applied via UAVs reduced the incidence of coffee berry borer. Full article
(This article belongs to the Special Issue Research Progress of Agricultural Machinery Testing)
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15 pages, 562 KiB  
Article
Classical Modeling of a Lossy Gaussian Bosonic Sampler
by Mikhail V. Umanskii and Alexey N. Rubtsov
Entropy 2024, 26(6), 493; https://doi.org/10.3390/e26060493 (registering DOI) - 5 Jun 2024
Abstract
Gaussian boson sampling (GBS) is considered a candidate problem for demonstrating quantum advantage. We propose an algorithm for the approximate classical simulation of a lossy GBS instance. The algorithm relies on the Taylor series expansion, and increasing the number of terms of the [...] Read more.
Gaussian boson sampling (GBS) is considered a candidate problem for demonstrating quantum advantage. We propose an algorithm for the approximate classical simulation of a lossy GBS instance. The algorithm relies on the Taylor series expansion, and increasing the number of terms of the expansion that are used in the calculation yields greater accuracy. The complexity of the algorithm is polynomial in the number of modes given the number of terms is fixed. We describe conditions for the input state squeezing parameter and loss level that provide the best efficiency for this algorithm (by efficient, we mean that the Taylor series converges quickly). In recent experiments that claim to have demonstrated quantum advantage, these conditions are satisfied; thus, this algorithm can be used to classically simulate these experiments. Full article
(This article belongs to the Topic Quantum Information and Quantum Computing, 2nd Volume)
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30 pages, 7103 KiB  
Article
Spatiotemporal Assessment of Water Pollution for Beira Lake, Sri Lanka
by Sangeeth Prasad, Yuansong Wei, Tushara Chaminda, Tharindu Ritigala, Lijun Yu, K. B. S. N. Jinadasa, H. M. S. Wasana, Suresh Indika, Isuru Yapabandara, Dazhou Hu, Madhubhashini Makehelwala, Sujithra K. Weragoda, Jianfeng Zhu and Zongke Zhang
Water 2024, 16(11), 1616; https://doi.org/10.3390/w16111616 (registering DOI) - 5 Jun 2024
Abstract
Beira Lake, located in Colombo, Sri Lanka, has suffered severe anthropogenic impacts, with previous restoration attempts failing due to a limited understanding of pollutant dynamics. Aiming to fill this gap, a comprehensive study was conducted during dry and wet seasons to assess the [...] Read more.
Beira Lake, located in Colombo, Sri Lanka, has suffered severe anthropogenic impacts, with previous restoration attempts failing due to a limited understanding of pollutant dynamics. Aiming to fill this gap, a comprehensive study was conducted during dry and wet seasons to assess the spatiotemporal water pollution of Beira Lake, employing key physicochemical parameters, numerical indices, and remote sensing analysis. The water pollution index (WPI) results categorize Beira Lake as highly polluted, with WPI values ranging from 2.38 ± 0.92 in the wet season to 2.53 ± 1.32 in the dry season. Comparatively higher COD levels recorded in the Beira Lake network, especially for Gangarama Lake show significant pollution levels during both the dry and wet seasons, e.g., the highest COD levels, at 306.40 mg/L, were observed during the wet season. The Trophic State Index (TSI) results indicate eutrophic and hypereutrophic conditions in Beira Lake, which are particularly pronounced during the wet season. The heavy metal pollution index (HPI) results suggest elevated heavy metal concentrations in Beira Lake, especially in the wet season. Combined with field investigation results, a remote sensing data analysis between 2016 and 2023 reveals significant improvements in water transparency, suggesting positive effects of recent management interventions. Parameters demanding attention include COD, nitrate, and total phosphate levels due to their consistent exceedance of permissible limits. The PCA results of indices correlations between wet and dry seasons offer valuable insights into the complex dynamics of Beira Lake’s water quality. The study makes recommendations for restoring Beira Lake, including stringent pollution controls, regular dredging, green infrastructure implementation, implementing new rules and regulations, and community engagement. Full article
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18 pages, 813 KiB  
Article
Examining Public Service Motivation’s Impact on Organizational Commitment: Focusing on Moderating Roles of Hygiene and Motivation Factors
by Geon Jung and Kuk-Kyoung Moon
Behav. Sci. 2024, 14(6), 476; https://doi.org/10.3390/bs14060476 (registering DOI) - 5 Jun 2024
Abstract
Despite previous studies on public service motivation among public sector employees, the empirical analysis of the influential contextual conditions that moderate public service motivation’s impact on employees’ work attitudes remains inadequate. Given these limitations, this study examines public service motivation’s effects on public [...] Read more.
Despite previous studies on public service motivation among public sector employees, the empirical analysis of the influential contextual conditions that moderate public service motivation’s impact on employees’ work attitudes remains inadequate. Given these limitations, this study examines public service motivation’s effects on public employees’ organizational commitment and investigates how Herzberg’s hygiene and motivation factors moderate the relationship between these aspects in the context of South Korea’s central government. For this, we used the data of 1021 public employees from the Differences in the Values of Different Generations of Public Officials and Organizational Innovation Survey, which the Korea Institute of Public Administration had conducted in 2022. We analyzed the data through hierarchical multiple regression analyses, and the results indicated that public service motivation exerts a positive effect on organizational commitment. Specifically, hygiene factors weaken the positive relationship between public service motivation and organizational commitment, while motivation factors have a moderating effect that strengthens said relationship. These findings suggest that, in order to enhance organizational commitment among motivated public employees, human resource management practices should prioritize motivational factors that can enhance job content, meaning, and autonomy instead of solely focusing on providing monetary incentives or improving external conditions. Full article
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14 pages, 2374 KiB  
Article
Can Unmanned Aerial Vehicle Images Be Used to Estimate Forage Production Parameters in Agroforestry Systems in the Caatinga?
by Wagner Martins dos Santos, Claudenilde de Jesus Pinheiro Costa, Maria Luana da Silva Medeiros, Alexandre Maniçoba da Rosa Ferraz Jardim, Márcio Vieira da Cunha, José Carlos Batista Dubeux Junior, David Mirabedini Jaramillo, Alan Cezar Bezerra and Evaristo Jorge Oliveira de Souza
Appl. Sci. 2024, 14(11), 4896; https://doi.org/10.3390/app14114896 (registering DOI) - 5 Jun 2024
Abstract
The environmental changes in the Caatinga biome have already resulted in it reaching levels of approximately 50% of its original vegetation, making it the third most degraded biome in Brazil, due to inadequate grazing practices that are driven by the difficulty of monitoring [...] Read more.
The environmental changes in the Caatinga biome have already resulted in it reaching levels of approximately 50% of its original vegetation, making it the third most degraded biome in Brazil, due to inadequate grazing practices that are driven by the difficulty of monitoring and estimating the yield parameters of forage plants, especially in agroforestry systems (AFS) in this biome. This study aimed to compare the predictive ability of different indexes with regard to the biomass and leaf area index of forage crops (bushveld signal grass and buffel grass) in AFS in the Caatinga biome and to evaluate the influence of removing system components on model performance. The normalized green red difference index (NGRDI) and the visible atmospherically resistant index (VARI) showed higher correlations (p < 0.05) with the variables. In addition, removing trees from the orthomosaics was the approach that most favored the correlation values. The models based on classification and regression trees (CARTs) showed lower RMSE values, presenting values of 3020.86, 1201.75, and 0.20 for FB, DB, and LAI, respectively, as well as higher CCC values (0.94). Using NGRDI and VARI, removing trees from the images, and using CART are recommended in estimating biomass and leaf area index in agroforestry systems in the Caatinga biome. Full article
(This article belongs to the Special Issue Novel Smart Technologies in Water Resource Management)
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25 pages, 5297 KiB  
Article
A Multiomics Perspective on Plant Cell Wall-Degrading Enzyme Production: Insights from the Unexploited Fungus Trichoderma erinaceum
by Michelle A. de Assis, Jovanderson J. B. da Silva, Lucas M. de Carvalho, Lucas S. Parreiras, João Paulo L. F. Cairo, Marina P. Marone, Thiago A. Gonçalves, Desireé S. Silva, Miriam Dantzger, Fernanda L. de Figueiredo, Marcelo F. Carazzolle, Gonçalo A. G. Pereira and André Damasio
J. Fungi 2024, 10(6), 407; https://doi.org/10.3390/jof10060407 (registering DOI) - 5 Jun 2024
Abstract
Trichoderma erinaceum is a filamentous fungus that was isolated from decaying sugarcane straw at a Brazilian ethanol biorefinery. This fungus shows potential as a source of plant cell wall-degrading enzymes (PCWDEs). In this study, we conducted a comprehensive multiomics investigation of T. erinaceum [...] Read more.
Trichoderma erinaceum is a filamentous fungus that was isolated from decaying sugarcane straw at a Brazilian ethanol biorefinery. This fungus shows potential as a source of plant cell wall-degrading enzymes (PCWDEs). In this study, we conducted a comprehensive multiomics investigation of T. erinaceum to gain insights into its enzymatic capabilities and genetic makeup. Firstly, we performed genome sequencing and assembly, which resulted in the identification of 10,942 genes in the T. erinaceum genome. We then conducted transcriptomics and secretome analyses to map the gene expression patterns and identify the enzymes produced by T. erinaceum in the presence of different substrates such as glucose, microcrystalline cellulose, pretreated sugarcane straw, and pretreated energy cane bagasse. Our analyses revealed that T. erinaceum highly expresses genes directly related to lignocellulose degradation when grown on pretreated energy cane and sugarcane substrates. Furthermore, our secretome analysis identified 35 carbohydrate-active enzymes, primarily PCWDEs. To further explore the enzymatic capabilities of T. erinaceum, we selected a β-glucosidase from the secretome data for recombinant production in a fungal strain. The recombinant enzyme demonstrated superior performance in degrading cellobiose and laminaribiose compared to a well-known enzyme derived from Trichoderma reesei. Overall, this comprehensive study provides valuable insights into both the genetic patterns of T. erinaceum and its potential for lignocellulose degradation and enzyme production. The obtained genomic data can serve as an important resource for future genetic engineering efforts aimed at optimizing enzyme production from this fungus. Full article
(This article belongs to the Section Fungal Cell Biology, Metabolism and Physiology)
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