The 2023 MDPI Annual Report has
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12 pages, 2662 KiB  
Article
Novel Metal-Free Synthesis of 3-Substituted Isocoumarins and Evaluation of Their Fluorescence Properties for Potential Applications
by Mei Sun, Chong-Yang Zeng, Lu-Lu Bu, Mai Xu, Kai Chen, Jia-Lin Liu, Tao Zhang, Jia-You Dai, Jia-Xin Hong and Ming-Wu Ding
Molecules 2024, 29(11), 2449; https://doi.org/10.3390/molecules29112449 (registering DOI) - 23 May 2024
Abstract
A novel metal-free synthesis of 3-substituted isocoumarins through a sequential O-acylation/Wittig reaction has been established. The readily accessible (2-carboxybenzyl)-triphenylphosphonium bromide and diverse chlorides produced various 1H-isochromen-1-one in the presence of triethylamine, employing sequential O-acylation and an intramolecular Wittig reaction of acid [...] Read more.
A novel metal-free synthesis of 3-substituted isocoumarins through a sequential O-acylation/Wittig reaction has been established. The readily accessible (2-carboxybenzyl)-triphenylphosphonium bromide and diverse chlorides produced various 1H-isochromen-1-one in the presence of triethylamine, employing sequential O-acylation and an intramolecular Wittig reaction of acid anhydride. Reactions using these facile conditions have exhibited high functional group tolerance and excellent yields (up to 90%). Moreover, the fluorescence properties of isocoumarin derivatives were evaluated at the theoretical and experimental levels to determine their potential application in fluorescent materials. These derivatives have good photoluminescence in THF with a large Stokes shift and an absolute fluorescence quantum yield of up to 14%. Full article
(This article belongs to the Section Organic Chemistry)
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12 pages, 321 KiB  
Article
Associations between Stigma, Depression, and Adherence to Antiretroviral Therapy in Brazilian Men Who Have Sex with Men Living with HIV
by Felipe Alckmin-Carvalho, Henrique Pereira, António Oliveira and Lucia Nichiata
Eur. J. Investig. Health Psychol. Educ. 2024, 14(6), 1489-1500; https://doi.org/10.3390/ejihpe14060098 (registering DOI) - 23 May 2024
Abstract
Adherence to antiretroviral therapy (ART) is a complex and multi-determined process that is influenced by psychosocial variables. Although international studies have pointed to the adverse impact of HIV stigma, sexual stigma, and depression on ART adherence among men who have sex with men [...] Read more.
Adherence to antiretroviral therapy (ART) is a complex and multi-determined process that is influenced by psychosocial variables. Although international studies have pointed to the adverse impact of HIV stigma, sexual stigma, and depression on ART adherence among men who have sex with men (MSM) with HIV, less is known about this association among Brazilians. We aimed to (a) evaluate indicators of depression, stigma related to HIV and homosexuality, and adherence to ART in a sample of Brazilian MSM living with HIV; (b) assess possible correlations between the variables analyzed, and (c) assess the impact of HIV and sexual stigma and depression on ART adherence. This cross-sectional study comprised 138 Brazilian MSM living with HIV as participants. Scales used included: a sociodemographic/clinical questionnaire, the questionnaire for assessment of adherence to antiretroviral therapy (CEAT-HIV), the Beck depression inventory (BDI-II), the internalized homophobia scale, and the HIV stigmatization scale. The mean adherence score was relatively high (78.83, within a range of 17–89 points). However, we observed inadequate ART adherence (CEAT-HIV < 75) in 28 (20.2%) respondents. Participants reported high scores for internalized sexual stigma, perceived sexual stigma in the community, and HIV stigma. Symptoms of depression were identified in 48.47% of participants. We found negative correlations between depression, HIV stigma, and treatment adherence, but not between sexual stigma and ART adherence. HIV-related stigma and sexual stigma were positively correlated with depression. Our regression analysis indicated that each year of age at diagnosis of HIV increased adherence by 0.22 points, on average. Each additional BDI-II score reduced adherence to ART by 0.20 points. The high prevalence of depression, HIV stigma, and sexual stigma, and their adverse effects on ART adherence and mental health, point to the need to implement evidence-based interventions to reduce sexual and serological stigma in the general population, as well as to mitigate the negative impacts of stigma on MSM living in HIV in Brazil. They also highlight the importance of periodically screening for these variables among MSM treated in Brazilian public health services, especially among those with inadequate adherence to ART. Full article
(This article belongs to the Special Issue Disparities in Mental Health and Well-Being)
13 pages, 4284 KiB  
Article
Promoting Thermal Conductivity of Alumina-Based Composite Materials by Systematically Incorporating Modified Graphene Oxide
by Nawon Lee, Jinsol Park, Nayeon Jang, Sehui Lee, Dayeon Kim, Sanggin Yun, Tae Woo Park, Jun-Hyun Kim and Hyun-Ho Park
Crystals 2024, 14(6), 490; https://doi.org/10.3390/cryst14060490 (registering DOI) - 23 May 2024
Abstract
Small amounts of thermally conductive graphene oxide (GO) and modified GO are systematically introduced as a second filler to thermal interface materials (TIMs) consisting of alumina (Al2O3) particles and polydimethylsiloxane (PDMS). The surface of GO is covalently linked with [...] Read more.
Small amounts of thermally conductive graphene oxide (GO) and modified GO are systematically introduced as a second filler to thermal interface materials (TIMs) consisting of alumina (Al2O3) particles and polydimethylsiloxane (PDMS). The surface of GO is covalently linked with an organic moiety, octadecylamine (ODA), to significantly improve the miscibility and dispersity of GO across the TIM matrix. Subsequently, two series of PDMS-Al2O3 composite TIMs are manufactured as a function of GO and ODA-GO content (0.25 wt%–2.5 wt%) to understand the effect of these second additives. The incorporation of GO into the Al2O3-PDMS composite materials generally increases the thermal conductivity (TC), ranging from 18% to 29%. Conversely, the use of ODA-GO further enhances the overall performance of TIMs (22–54%) by facilitating the dispersion degree of GO across the composite matrix. The great improvement in TC is presumably related to the formation of conductive pathways by uniformly integrating 2D-type GO flakes across spherical Al2O3 particle networks. The ability to simply regulate the polarity of the thermally conductive second filler can provide an idea for designing cost-effective and practical TIM-2-type pads that can be commercially applicable in between an integrated heat spreader and a heat sink. Full article
(This article belongs to the Section Hybrid and Composite Crystalline Materials)
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20 pages, 5518 KiB  
Article
Gut Microbiome-Mediated Mechanisms in Alleviating Opioid Addiction with Aqueous Extract of Anacyclus pyrethrum
by Abdelmounaim Baslam, Hamid Kabdy, Yassine Chait, Hajar Azraida, Loubna El Yazouli, Rachida Aboufatima, Abderrahman Chait and Marouane Baslam
Biomedicines 2024, 12(6), 1152; https://doi.org/10.3390/biomedicines12061152 (registering DOI) - 23 May 2024
Abstract
The escalating rates of morbidity and mortality associated with opioid use disorder (OUD) have spurred a critical need for improved treatment outcomes. This study aimed to investigate the impact of prolonged exposure to Fentanyl, a potent opioid, on behavior, biochemical markers, oxidative stress, [...] Read more.
The escalating rates of morbidity and mortality associated with opioid use disorder (OUD) have spurred a critical need for improved treatment outcomes. This study aimed to investigate the impact of prolonged exposure to Fentanyl, a potent opioid, on behavior, biochemical markers, oxidative stress, and the composition of the gut microbiome. Additionally, we sought to explore the therapeutic potential of Anacyclus pyrethrum in mitigating the adverse effects of Fentanyl withdrawal. The study unveiled that chronic Fentanyl administration induced a withdrawal syndrome characterized by elevated cortisol levels (12.09 mg/mL, compared to 6.3 mg/mL for the control group). This was accompanied by heightened anxiety, indicated by a reduction in time spent and entries made into the open arm in the Elevated Plus Maze Test, as well as depressive-like behaviors, manifested through increased immobility time in the Forced Swim Test. Additionally, Fentanyl exposure correlated with decreased gut microbiome density and diversity, coupled with heightened oxidative stress levels, evidenced by elevated malondialdehyde (MDA) and reduced levels of catalase (CAT) and superoxide dismutase (SOD). However, both post- and co-administration of A. pyrethrum exhibited substantial improvements in these adverse effects, effectively alleviating symptoms associated with OUD withdrawal syndrome and eliciting positive influences on gut microbiota. In conclusion, this research underscores the therapeutic potential of A. pyrethrum in managing Fentanyl withdrawal symptoms. The findings indicate promising effects in alleviating behavioral impairments, reducing stress, restoring gut microbiota, and mitigating oxidative stress, offering valuable insights for addressing the challenges of OUD treatment. Full article
(This article belongs to the Special Issue Advanced Research of Gut Microbiota in Health and Diseases)
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17 pages, 3155 KiB  
Article
Histological and Physiological Study of the Effects of Biostimulants and Plant Growth Stimulants in Viburnum opulus ‘Roseum’
by Dezső Kovács, Katalin Horotán, László Orlóci, Marianna Makádi, István Mosonyi, Magdolna Sütöri-Diószegi and Szilvia Kisvarga
Plants 2024, 13(11), 1446; https://doi.org/10.3390/plants13111446 (registering DOI) - 23 May 2024
Abstract
Biostimulants and other plant growth promoters can provide an effective solution to the challenge of urbanisation and climate change. Viburnum opulus ‘Roseum’ is a globally popular deciduous shrub species that can be made more resistant to urban influences by using natural growth-promoting substances. [...] Read more.
Biostimulants and other plant growth promoters can provide an effective solution to the challenge of urbanisation and climate change. Viburnum opulus ‘Roseum’ is a globally popular deciduous shrub species that can be made more resistant to urban influences by using natural growth-promoting substances. In our study, we investigated the effects of growth promoters Kelpak®, Bistep and Yeald Plus on the species, both histologically and physiologically (proline stress hormone measurement). Our measurements were complemented using the analysis of rhizosphere alkaline phosphatase, β-glucosidase and β-glucosaminidase enzymes, to obtain a more complete picture of the combined effect of biostimulants and species. We found that the Bistep biostimulant had an outstanding effect on the leaf tissue culture results of the variety. The transpiration and evapotranspiration findings also confirmed the efficacy of biostimulants. In the case of POD activity and rhizosphere enzyme measurements, Bistep and Yeald Plus obtained statistically higher values than the control group. Kelpak produced better results than the control group in several measurements (alkaline phosphatase levels; evapotranspiration results), but in other cases it resulted in lower values than the control treatment. The use of Bistep and Yeald Plus can greatly assist growers in the cultivation of V. opulus ‘Roseum’ in an urban environment. Full article
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17 pages, 571 KiB  
Article
A Composite Half-Normal-Pareto Distribution with Applications to Income and Expenditure Data
by Neveka M. Olmos, Emilio Gómez-Déniz, Osvaldo Venegas and Héctor W. Gómez
Mathematics 2024, 12(11), 1631; https://doi.org/10.3390/math12111631 (registering DOI) - 23 May 2024
Abstract
The half-normal distribution is composited with the Pareto model to obtain a uni-parametric distribution with a heavy right tail, called the composite half-normal-Pareto distribution. This new distribution is useful for modeling positive data with atypical observations. We study the properties and the behavior [...] Read more.
The half-normal distribution is composited with the Pareto model to obtain a uni-parametric distribution with a heavy right tail, called the composite half-normal-Pareto distribution. This new distribution is useful for modeling positive data with atypical observations. We study the properties and the behavior of the right tail of this new distribution. We estimate the parameter using a method based on percentiles and the maximum likelihood method and assess the performance of the maximum likelihood estimator using Monte Carlo. We report three applications, one with simulated data and the others with income and expenditure data, in which the new distribution presents better performance than the Pareto distribution. Full article
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15 pages, 2587 KiB  
Article
Unsupervised Scene Image Text Segmentation Based on Improved CycleGAN
by Xian Liu, Fang Yang and Wei Guo
Appl. Sci. 2024, 14(11), 4420; https://doi.org/10.3390/app14114420 (registering DOI) - 23 May 2024
Abstract
Scene image text segmentation is an important task in computer vision, but the complexity and diversity of backgrounds make it challenging. All supervised image segmentation tasks require paired semantic label data to ensure the accuracy of segmentation, but semantic labels are often difficult [...] Read more.
Scene image text segmentation is an important task in computer vision, but the complexity and diversity of backgrounds make it challenging. All supervised image segmentation tasks require paired semantic label data to ensure the accuracy of segmentation, but semantic labels are often difficult to obtain. To solve this problem, we propose an unsupervised scene image text segmentation model based on the image style transfer model cyclic uniform Generation Adversarial network (CycleGAN), which is trained by partial unpaired label data. Text segmentation is achieved by converting a complex background to a simple background. Since the images generated by CycleGAN cannot retain the details of the text content, we also introduced the Atrous spatial Pyramid pool module (ASPP) to obtain the features of the text from multiple scales. The resulting image quality is improved. The proposed method is verified by experiments on a synthetic data set, the IIIT 5k word data set and the MACT data set, which effectively segments the text and preserves the details of the text content. Full article
(This article belongs to the Special Issue Advances in Neural Networks and Deep Learning)
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21 pages, 17817 KiB  
Article
Induction of Human Wharton’s Jelly of Umbilical Cord Derived Mesenchymal Stem Cells to Be Chondrocytes and Transplantation in Guinea Pig Model with Spontaneous Osteoarthritis
by Gulrez Nadeem, Kasem Theerakittayakorn, Sirilak Somredngan, Hong Thi Nguyen, Traimat Boonthai, Worawalan Samruan, Pornthep Tangkanjanavelukul and Rangsun Parnpai
Int. J. Mol. Sci. 2024, 25(11), 5673; https://doi.org/10.3390/ijms25115673 (registering DOI) - 23 May 2024
Abstract
Osteoarthritis (OA) is a degenerative joint disease commonly found in elderly people and obese patients. Currently, OA treatments are determined based on their condition severity and a medical professional’s advice. The aim of this study was to differentiate human Wharton’s jelly-derived mesenchymal stem [...] Read more.
Osteoarthritis (OA) is a degenerative joint disease commonly found in elderly people and obese patients. Currently, OA treatments are determined based on their condition severity and a medical professional’s advice. The aim of this study was to differentiate human Wharton’s jelly-derived mesenchymal stem cells (hWJ-MSCs) into chondrocytes for transplantation in OA-suffering guinea pigs. hWJ-MSCs were isolated using the explant culture method, and then, their proliferation, phenotypes, and differentiation ability were evaluated. Subsequently, hWJ-MSCs-derived chondrocytes were induced and characterized based on immunofluorescent staining, qPCR, and immunoblotting techniques. Then, early-OA-suffering guinea pigs were injected with hyaluronic acid (HA) containing either MSCs or 14-day-old hWJ-MSCs-derived chondrocytes. Results showed that hWJ-MSCs-derived chondrocytes expressed specific markers of chondrocytes including Aggrecan, type II collagen, and type X collagen proteins and β-catenin, Sox9, Runx2, Col2a1, Col10a1, and ACAN gene expression markers. Administration of HA plus hWJ-MSCs-derived chondrocytes (HA-CHON) produced a better recovery rate of degenerative cartilages than HA plus MSCs or only HA. Histological assessments demonstrated no significant difference in Mankin’s scores of recovered cartilages between HA-CHON-treated guinea pigs and normal articular cartilage guinea pigs. Transplantation of hWJ-MSCs-derived chondrocytes was more effective than undifferentiated hWJ-MSCs or hyaluronic acid for OA treatment in guinea pigs. This study provides a promising treatment to be used in early OA patients to promote recovery and prevent disease progression to severe osteoarthritis. Full article
(This article belongs to the Section Molecular Biology)
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20 pages, 3140 KiB  
Article
From Stūpa to Pagoda: Re-Examining the Sinification and Transformation of Buddhist Monuments from Indian Origins
by Young-Jae Kim
Religions 2024, 15(6), 640; https://doi.org/10.3390/rel15060640 (registering DOI) - 23 May 2024
Abstract
This study conducts a comparative analysis of Buddhist sacred structures throughout Asia, focusing on the historical development, regional disparities, and the cultural sinification process of stūpas, caityas, and pagodas. Specifically, it delves into the origins, definitions, and terminologies of early Buddhist monuments, such [...] Read more.
This study conducts a comparative analysis of Buddhist sacred structures throughout Asia, focusing on the historical development, regional disparities, and the cultural sinification process of stūpas, caityas, and pagodas. Specifically, it delves into the origins, definitions, and terminologies of early Buddhist monuments, such as stūpas/mahācetiyas and caityas/cetiyas, emphasizing their Indian origins. The research further explores the adaptation and reinterpretation of these original Indian concepts as they spread to East Asia, morphing into new forms, such as pagodas and Buddha halls. It examines the subtle shifts in terminology and the altered meanings and functions of these monuments, from their Indian origins to their sinified representations in East Asia. The transformation of Indian Buddhist monuments through local culture and technology into East Asian architectural forms is investigated, offering a detailed perspective on the dynamic transformation of sacred spaces in Buddhism. This illustrates the religion’s adaptability and integration with the local cultures of ancient East Asia. By analyzing the terminologies and symbolic meanings associated with the architectural transition from stūpa to pagoda, the study argues that sinicized ritual spaces in East Asia have adopted architectural types from pre-Buddhist traditions to represent Indian spaces, thereby highlighting the nuanced changes and the continuous adaptation of sacred Buddhist architecture. Full article
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23 pages, 5590 KiB  
Article
In-Depth Exploration of Design and Analysis for PM-Assisted Synchronous Reluctance Machines: Implications for Light Electric Vehicles
by Cristina Adăscăliței, Radu Andrei Marțiș, Petros Karaisas and Claudia Steluța Marțiș
Machines 2024, 12(6), 361; https://doi.org/10.3390/machines12060361 (registering DOI) - 23 May 2024
Abstract
In electric or hybrid vehicles’ propulsion systems, Permanent Magnet-Assisted Synchronous Reluctance Machines represent a viable alternative to Permanent Magnet Synchronous Machines. Based on previous research work, the present paper proposes, designs, and optimizes two ferrite PMaSynRM topologies, analyzed against a reference machine (also [...] Read more.
In electric or hybrid vehicles’ propulsion systems, Permanent Magnet-Assisted Synchronous Reluctance Machines represent a viable alternative to Permanent Magnet Synchronous Machines. Based on previous research work, the present paper proposes, designs, and optimizes two ferrite PMaSynRM topologies, analyzed against a reference machine (also PMaSynRM) with improved torque ripple content, based on similar specifications and dimensional constraints. Considering the trend of increasing the DC voltage level in electric and hybrid vehicles, the optimal topology is included in an analysis of the DC voltage level impact on the design and performances of PMSynRM. Full article
(This article belongs to the Topic Advanced Electrical Machine Design and Optimization Ⅱ)
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27 pages, 1202 KiB  
Review
New Frontiers in Potato Breeding: Tinkering with Reproductive Genes and Apomixis
by Diego Hojsgaard, Manuela Nagel, Sergio E. Feingold, Gabriela A. Massa and John E. Bradshaw
Biomolecules 2024, 14(6), 614; https://doi.org/10.3390/biom14060614 (registering DOI) - 23 May 2024
Abstract
Potato is the most important non-cereal crop worldwide, and, yet, genetic gains in potato have been traditionally delayed by the crop’s biology, mostly the genetic heterozygosity of autotetraploid cultivars and the intricacies of the reproductive system. Novel site-directed genetic modification techniques provide opportunities [...] Read more.
Potato is the most important non-cereal crop worldwide, and, yet, genetic gains in potato have been traditionally delayed by the crop’s biology, mostly the genetic heterozygosity of autotetraploid cultivars and the intricacies of the reproductive system. Novel site-directed genetic modification techniques provide opportunities for designing climate-smart cultivars, but they also pose new possibilities (and challenges) for breeding potato. As potato species show a remarkable reproductive diversity, and their ovules have a propensity to develop apomixis-like phenotypes, tinkering with reproductive genes in potato is opening new frontiers in potato breeding. Developing diploid varieties instead of tetraploid ones has been proposed as an alternative way to fill the gap in genetic gain, that is being achieved by using gene-edited self-compatible genotypes and inbred lines to exploit hybrid seed technology. In a similar way, modulating the formation of unreduced gametes and synthesizing apomixis in diploid or tetraploid potatoes may help to reinforce the transition to a diploid hybrid crop or enhance introgression schemes and fix highly heterozygous genotypes in tetraploid varieties. In any case, the induction of apomixis-like phenotypes will shorten the time and costs of developing new varieties by allowing the multi-generational propagation through true seeds. In this review, we summarize the current knowledge on potato reproductive phenotypes and underlying genes, discuss the advantages and disadvantages of using potato’s natural variability to modulate reproductive steps during seed formation, and consider strategies to synthesize apomixis. However, before we can fully modulate the reproductive phenotypes, we need to understand the genetic basis of such diversity. Finally, we visualize an active, central role for genebanks in this endeavor by phenotyping properly genotyped genebank accessions and new introductions to provide scientists and breeders with reliable data and resources for developing innovations to exploit market opportunities. Full article
(This article belongs to the Special Issue Molecular Plant Reproduction: From Cells to Nature)
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18 pages, 823 KiB  
Article
Integrating Blockchain and Deep Learning for Enhanced Mobile VPN Forensics: A Comprehensive Framework
by Saad Said Alqahtany and Toqeer Ali Syed
Appl. Sci. 2024, 14(11), 4421; https://doi.org/10.3390/app14114421 (registering DOI) - 23 May 2024
Abstract
In an era marked by technological advancement, the rising reliance on Virtual Private Networks (VPNs) necessitates sophisticated forensic analysis techniques to investigate VPN traffic, especially in mobile environments. This research introduces an innovative approach utilizing Convolutional Neural Networks (CNNs) and Graph Neural Networks [...] Read more.
In an era marked by technological advancement, the rising reliance on Virtual Private Networks (VPNs) necessitates sophisticated forensic analysis techniques to investigate VPN traffic, especially in mobile environments. This research introduces an innovative approach utilizing Convolutional Neural Networks (CNNs) and Graph Neural Networks (GNNs) for classifying VPN traffic, aiding forensic investigators in precisely identifying applications or websites accessed via VPN connections. By leveraging the combined strengths of CNNs and GNNs, our method provides an effective solution for discerning user activities during VPN sessions. Further extending this framework, we incorporate blockchain technology to meticulously record all mobile VPN transactions, ensuring a tamper-proof and transparent ledger that significantly bolsters the integrity and admissibility of forensic evidence in legal scenarios. A specific use-case demonstrates this methodology in mobile forensics, where our integrated approach not only accurately classifies data traffic but also securely logs transactional details on the blockchain, offering an unprecedented level of detail and reliability in forensic investigations. Extensive real-world VPN dataset experiments validate our approach, highlighting its potential to achieve high accuracy and offering invaluable insights for both technological and legal domains in the context of mobile VPN usage. Full article
(This article belongs to the Section Computing and Artificial Intelligence)
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14 pages, 1643 KiB  
Article
Desolvation Inability of Solid Hydrates, an Alternative Expression for the Gibbs Free Energy of Solvation, and the Myth of Freeze-Drying
by Costas Tsioptsias
Materials 2024, 17(11), 2508; https://doi.org/10.3390/ma17112508 (registering DOI) - 23 May 2024
Abstract
The term “desolvation inability” is proposed in order to describe the alteration of the original chemical structure of a solute (“decomposition”) prior to the solvent’s full removal upon the heating of the solvate. This behavior has been sporadically reported; however, it is much [...] Read more.
The term “desolvation inability” is proposed in order to describe the alteration of the original chemical structure of a solute (“decomposition”) prior to the solvent’s full removal upon the heating of the solvate. This behavior has been sporadically reported; however, it is much more frequent, and it is the basis of various, seemingly unrelated, effects/processes, e.g., the vinegar syndrome of cellulose acetate cinematographic films, in thermal energy storage. An explanation and a criterion/index for the prediction of this behavior are provided based on the comparison of the Gibbs free energies of decomposition and desolvation. A new approach for the expression of the Gibbs free energy of desolvation is proposed by reversing the roles of the solute and solvent and by regarding water as the solute rather than as the solvent, while the solute is treated as a solid solvent. This approach results in lower solvation/desolvation Gibbs free energy values. Based on the above, the experimentally observed thermal behavior of three inorganic hydrates is predicted and explained. Theoretically and experimentally, it is supported that decomposition is possible at sub-zero (°C) temperatures and the regarded simultaneous drying and protection of heat-sensitive substances by freeze-drying, at least in some cases, e.g., for the case of gallic acid, is an unverified myth. Full article
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15 pages, 588 KiB  
Article
Complications and Risk Factors in Patients with Soft Tissue Sarcoma of the Extremities Treated with Radiotherapy
by Arthur Lebas, Clara Le Fevre, Waisse Waissi, Isabelle Chambrelant, David Brinkert and Georges Noel
Cancers 2024, 16(11), 1977; https://doi.org/10.3390/cancers16111977 (registering DOI) - 23 May 2024
Abstract
Introduction: Soft tissue sarcomas of the extremities (ESTSs) pose significant challenges in treatment and management due to their diverse nature and potential complications. This study aimed to assess complications associated with multimodal treatments involving surgery and radiotherapy (RT) and to identify potential risk [...] Read more.
Introduction: Soft tissue sarcomas of the extremities (ESTSs) pose significant challenges in treatment and management due to their diverse nature and potential complications. This study aimed to assess complications associated with multimodal treatments involving surgery and radiotherapy (RT) and to identify potential risk factors. Methods: We retrospectively analyzed nonmetastatic ESTS patients treated with surgery and pre- or post-operative RT between 2007 and 2020 in Strasbourg, France. Complications, including wound complications (WCs), lymphedema, acute and chronic RT-related complications, and fractures, were meticulously evaluated. Results: A total of 169 patients diagnosed with localized ESTSs were included, with a median age of 64 years (range 21–94 years). ESTSs primarily occurred proximally (74.6%) and in the lower limbs (71%). The median follow-up was 5.5 years. WCs occurred in 22.5% of patients, with proximal and lower extremity tumors being significant risk factors. Acute RT-related complications included radiodermatitis, with grade ≥ 2 occurring in 43.1% of patients, which was associated with superficial tumors. Three patients had an edema grade ≥ 2. Chronic complications included telangiectasias (21.7%) and fibrosis (38.7%), with higher rates associated with larger PTVs and higher RT doses, respectively. Fractures occurred in 5 patients, mainly in the tibia (40%). Conclusions: Multimodal treatment of ESTSs demonstrated excellent tolerance, with manageable side effects. Numerous risk factors have been highlighted, providing insights for optimizing treatment strategies and enhancing patient care in this rare disease. Full article
(This article belongs to the Special Issue Multimodality Management of Sarcomas)
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14 pages, 3838 KiB  
Article
Photobiomodulation Inhibits Ischemia-Induced Brain Endothelial Senescence via Endothelial Nitric Oxide Synthase
by Yu Feng, Zhihai Huang, Xiaohui Ma, Xuemei Zong, Vesna Tesic, Baojin Ding, Celeste Yin-Chieh Wu, Reggie Hui-Chao Lee and Quanguang Zhang
Antioxidants 2024, 13(6), 633; https://doi.org/10.3390/antiox13060633 (registering DOI) - 23 May 2024
Abstract
Recent research suggests that photobiomodulation therapy (PBMT) positively impacts the vascular function associated with various cerebrovascular diseases. Nevertheless, the specific mechanisms by which PBMT improves vascular function remain ambiguous. Since endothelial nitric oxide synthase (eNOS) is crucial in regulating vascular function following cerebral [...] Read more.
Recent research suggests that photobiomodulation therapy (PBMT) positively impacts the vascular function associated with various cerebrovascular diseases. Nevertheless, the specific mechanisms by which PBMT improves vascular function remain ambiguous. Since endothelial nitric oxide synthase (eNOS) is crucial in regulating vascular function following cerebral ischemia, we investigated whether eNOS is a key element controlling cerebrovascular function and the senescence of vascular endothelial cells following PBMT treatment. Both rat photothrombotic (PT) stroke and in vitro oxygen–glucose deprivation (OGD)-induced vascular endothelial injury models were utilized. We demonstrated that treatment with PBMT (808 nm, 350 mW/cm2, 2 min/day) for 7 days significantly reduced PT-stroke-induced vascular permeability. Additionally, PBMT inhibited the levels of endothelial senescence markers (senescence green and p21) and antiangiogenic factor (endostatin), while increasing the phospho-eNOS (Ser1177) in the peri-infarct region following PT stroke. In vitro study further indicated that OGD increased p21, endostatin, and DNA damage (γH2AX) levels in the brain endothelial cell line, but they were reversed by PBMT. Intriguingly, the beneficial effects of PBMT were attenuated by a NOS inhibitor. In summary, these findings provide novel insights into the role of eNOS in PBMT-mediated protection against cerebrovascular senescence and endothelial dysfunction following ischemia. The use of PBMT as a therapeutic is a promising strategy to improve endothelial function in cerebrovascular disease. Full article
(This article belongs to the Special Issue Oxidative Stress and Pathophysiology of Stroke)
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11 pages, 1391 KiB  
Article
Muscle Injuries in Elite Youth Football Academy: A Six-Year Longitudinal Study on the U15 Football Team
by Jaksa Skomrlj, Toni Modric, Damir Sekulic, Ognjen Uljevic, Marijana Geets Kesic, Ante Bandalovic, Ante Turic, Boris Becir and Sime Versic
Appl. Sci. 2024, 14(11), 4422; https://doi.org/10.3390/app14114422 (registering DOI) - 23 May 2024
Abstract
To develop specific preventive strategies, it is necessary to investigate in detail the occurrence of injuries in young football players. This study aimed to provide details about the type, location, severity, and contact nature of muscle injuries in elite U15 Croatian football players. [...] Read more.
To develop specific preventive strategies, it is necessary to investigate in detail the occurrence of injuries in young football players. This study aimed to provide details about the type, location, severity, and contact nature of muscle injuries in elite U15 Croatian football players. A total number of 130 muscle injuries occurred during the six competitive seasons, of which 88 were DOMS injuries and 42 were rupture injuries. Specifically, 87% of all muscle injuries belonged to the four major groups, with only 15 injuries to the other muscle groups: hamstrings (43), quadriceps (41), adductors (25), calves (6). The muscle injury incidence was stable during the observed period as the injury incidence rate ratio (IRR) was 1.01 (95%CI: 0.99–1.03), with 3.13 (95%CI: 3.09–3.17) muscle injuries per 1000 h of exposure in the first season and 3.06 (95%CI: 3.02–3.1) in the sixth season. A significantly higher risk for muscle injuries was discovered in the competition as the incidence for the whole observed period was 7.38 (95%CI: 7.29–7.47) compared to 2.25 (95%CI: 2.24–2.26) in the training period. Despite the relatively stable number of sustained muscle injuries, the relative proportion of muscular injuries increased over the years due to a severe decrease in the total number of injuries. Regarding the proportion of players who had sustained a muscle injury, our results suggest that approximately two out of five players can expect a muscular injury over the one-season period. Relatively high injury expectancy rates, as well as reinjury rates, require specific preventive interventions that will reduce the number and severity of new and recurred injuries. Future studies should include a wide set of predictor variables in order to establish the most important injury risk factors. Full article
(This article belongs to the Special Issue Sports Injuries and Physical Rehabilitation)
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12 pages, 1832 KiB  
Technical Note
Effect of Argo Salinity Drift since 2016 on the Estimation of Regional Steric Sea Level Change Rates
by Lu Tang, Hao Zhou, Jin Li, Penghui Wang, Xiaoli Su and Zhicai Luo
Remote Sens. 2024, 16(11), 1855; https://doi.org/10.3390/rs16111855 (registering DOI) - 23 May 2024
Abstract
Since 2016, the Argo (Array for Real-Time Geostrophic Oceanography) ocean salinity data has exhibited significant drift, directly affecting the accurate quantification of the global steric sea level (SSL) rates. To further investigate how salinity drift affects the estimation of SSL rates in different [...] Read more.
Since 2016, the Argo (Array for Real-Time Geostrophic Oceanography) ocean salinity data has exhibited significant drift, directly affecting the accurate quantification of the global steric sea level (SSL) rates. To further investigate how salinity drift affects the estimation of SSL rates in different depths and regions, we divide the 0–2000 m into three layers (0–300 m, 300–1000 m and 1000–2000 m) and select five open oceans (the South and North Pacific, the South and North Atlantic, and the Indian Ocean) for discussion. By comparing the SSL rates between the periods of 2005–2015 and 2005–2019, we can evaluate the impact of salinity drift. Taking the estimated results from the IPRC (provided by the International Pacific Research Center at the University of Hawaii) and BOA (provided by the Second Institute of Oceanography, China) data as examples, we find that the effect of salinity drift is the largest at the depth of 1000–2000 m, about 29% for IPRC data and about 18% for BOA data. Moreover, the South Atlantic is susceptible to the effects of salinity drift, with an approximately 13% impact for IPRC data and 21% for BOA data. Full article
(This article belongs to the Special Issue Applications of Satellite Geodesy for Sea-Level Change Observation)
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17 pages, 2907 KiB  
Article
SARS-CoV-2 Selectively Induces the Expression of Unproductive Splicing Isoforms of Interferon, Class I MHC, and Splicing Machinery Genes
by Thomaz Lüscher Dias, Izabela Mamede, Nayara Evelin de Toledo, Lúcio Rezende Queiroz, Ícaro Castro, Rafael Polidoro, Luiz Eduardo Del-Bem, Helder Nakaya and Glória Regina Franco
Int. J. Mol. Sci. 2024, 25(11), 5671; https://doi.org/10.3390/ijms25115671 (registering DOI) - 23 May 2024
Abstract
RNA processing is a highly conserved mechanism that serves as a pivotal regulator of gene expression. Alternative processing generates transcripts that can still be translated but lead to potentially nonfunctional proteins. A plethora of respiratory viruses, including severe acute respiratory syndrome coronavirus 2 [...] Read more.
RNA processing is a highly conserved mechanism that serves as a pivotal regulator of gene expression. Alternative processing generates transcripts that can still be translated but lead to potentially nonfunctional proteins. A plethora of respiratory viruses, including severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), strategically manipulate the host’s RNA processing machinery to circumvent antiviral responses. We integrated publicly available omics datasets to systematically analyze isoform-level expression and delineate the nascent peptide landscape of SARS-CoV-2-infected human cells. Our findings explore a suggested but uncharacterized mechanism, whereby SARS-CoV-2 infection induces the predominant expression of unproductive splicing isoforms in key IFN signaling, interferon-stimulated (ISGs), class I MHC, and splicing machinery genes, including IRF7, HLA-B, and HNRNPH1. In stark contrast, cytokine and chemokine genes, such as IL6 and TNF, predominantly express productive (protein-coding) splicing isoforms in response to SARS-CoV-2 infection. We postulate that SARS-CoV-2 employs an unreported tactic of exploiting the host splicing machinery to bolster viral replication and subvert the immune response by selectively upregulating unproductive splicing isoforms from antigen presentation and antiviral response genes. Our study sheds new light on the molecular interplay between SARS-CoV-2 and the host immune system, offering a foundation for the development of novel therapeutic strategies to combat COVID-19. Full article
(This article belongs to the Special Issue Molecular Research on Viral Infection and Host Immunity)
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24 pages, 5723 KiB  
Article
Stick–Slip Suppression in Drill String Systems Using a Novel Adaptive Sliding Mode Control Approach
by Fourat Zribi, Lilia Sidhom and Mohamed Gharib
Vibration 2024, 7(2), 479-502; https://doi.org/10.3390/vibration7020026 (registering DOI) - 23 May 2024
Abstract
A novel control technique is presented in this paper, which is based on a first-order adaptive sliding mode that ensures convergence in a finite time without any prior information on the upper limits of the parametric uncertainties and/or external disturbances. Based on an [...] Read more.
A novel control technique is presented in this paper, which is based on a first-order adaptive sliding mode that ensures convergence in a finite time without any prior information on the upper limits of the parametric uncertainties and/or external disturbances. Based on an exponent reaching law, this controller uses two dynamically adaptive control gains. Once the sliding mode is reached, the dynamic gains decrease in order to loosen the system’s constraints, which guarantees minimal control effort. The proof of convergence was demonstrated according to Lyapunov’s criterion. The proposed algorithm was applied to a drill string system to evaluate its performance because such systems present variable operating conditions caused by, for example, the type of rock. The effectiveness of the proposed controller was evaluated by conducting a comparative study that involved comparing it against a commonly used sliding mode controller, as well as other recent adaptive sliding mode control techniques. The different mathematical performance measures included energy consumption. The proposed algorithm had the best performance measures with the lowest energy consumption and it was able to significantly improve the functioning of the drill string system. The results indicated that the proposed controller had 20% less chattering than the classic SM controller. Finally, the proposed controller was the most robust to uncertainties in system parameters and external disturbances, thus demonstrating the auto-adjustable features of the controller. Full article
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19 pages, 4292 KiB  
Article
Bioinformatic Analysis of Topoisomerase IIα Reveals Interdomain Interdependencies and Critical C-Terminal Domain Residues
by Clark E. Endsley, Kori A. Moore, Thomas D. Townsley, Kirk K. Durston and Joseph E. Deweese
Int. J. Mol. Sci. 2024, 25(11), 5674; https://doi.org/10.3390/ijms25115674 (registering DOI) - 23 May 2024
Abstract
DNA Topoisomerase IIα (Top2A) is a nuclear enzyme that is a cancer drug target, and there is interest in identifying novel sites on the enzyme to inhibit cancer cells more selectively and to reduce off-target toxicity. The C-terminal domain (CTD) is one potential [...] Read more.
DNA Topoisomerase IIα (Top2A) is a nuclear enzyme that is a cancer drug target, and there is interest in identifying novel sites on the enzyme to inhibit cancer cells more selectively and to reduce off-target toxicity. The C-terminal domain (CTD) is one potential target, but it is an intrinsically disordered domain, which prevents structural analysis. Therefore, we set out to analyze the sequence of Top2A from 105 species using bioinformatic analysis, including the PSICalc algorithm, Shannon entropy analysis, and other approaches. Our results demonstrate that large (10th-order) interdependent clusters are found including non-proximal positions across the major domains of Top2A. Further, CTD-specific clusters of the third, fourth, and fifth order, including positions that had been previously analyzed via mutation and biochemical assays, were identified. Some of these clusters coincided with positions that, when mutated, either increased or decreased relaxation activity. Finally, sites of low Shannon entropy (i.e., low variation in amino acids at a given site) were identified and mapped as key positions in the CTD. Included in the low-entropy sites are phosphorylation sites and charged positions. Together, these results help to build a clearer picture of the critical positions in the CTD and provide potential sites/regions for further analysis. Full article
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15 pages, 3020 KiB  
Article
The Possible Role of Mycotoxins in the Pathogenesis of Endometrial Cancer
by Márkó Unicsovics, Zsófia Molnár, Miklós Mézes, Katalin Posta, György Nagyéri, Szabolcs Várbíró, Nándor Ács, Levente Sára and Zsuzsanna Szőke
Toxins 2024, 16(6), 236; https://doi.org/10.3390/toxins16060236 (registering DOI) - 23 May 2024
Abstract
Endometrial cancer is one of the most common cancer types among women. Many factors can contribute to the development of this disease, including environmental factors and, thus, eating habits. Our study aims to determine the levels of various mycotoxins and their metabolites in [...] Read more.
Endometrial cancer is one of the most common cancer types among women. Many factors can contribute to the development of this disease, including environmental factors and, thus, eating habits. Our study aims to determine the levels of various mycotoxins and their metabolites in the blood serum and endometrial tissue samples of participants with previously proven endometrial cancer and to find possible contributions to cancer development. In the cohort clinical trial, 52 participants aged between 44 and 86 were studied. The participants were divided into two groups: patients or matched controls. All patients had previously histologically diagnosed endometrial cancer. The cancer patients were divided into low-grade endometrioid and low- plus high-grade endometrioid groups. Controls had no history of endometrial malignancy or premalignancy. Blood serum and endometrial tissue samples were obtained from all study patients. We compared the concentrations of total Aflatoxins (Afs), Deoxynivalenol (DON), Ochratoxin-A (OTA), T2-toxin and HT2 toxin (T2/HT2 toxin), Zearalenone (ZEN), alpha-Zearalenol (α-ZOL), and Fumonisin B1 (FB1) in the serum and endometrium between the different study groups. As a result, we can see a significant correlation between the higher levels of Afs and zearalenone and the presence of endometrial cancer. In the case of Afs, DON, OTA, T2/HT2 toxins, ZEN, and alpha-ZOL, we measured higher endometrial concentrations than in serum. Considering the effect of mycotoxins and eating habits on cancer development, our results might lead to further research exploring the relationship between certain mycotoxins and endometrium cancer. Full article
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14 pages, 1254 KiB  
Review
Exploring Health Informatics in the Battle against Drug Addiction: Digital Solutions for the Rising Concern
by Shakila Jahan Shimu, Srushti Moreshwar Patil, Ebenezer Dadzie, Tadele Tesfaye, Poorvanshi Alag and Gniewko Więckiewicz
J. Pers. Med. 2024, 14(6), 556; https://doi.org/10.3390/jpm14060556 (registering DOI) - 23 May 2024
Abstract
Drug addiction is a rising concern globally that has deeply attracted the attention of the healthcare sector. The United States is not an exception, and the drug addiction crisis there is even more serious, with 10% of adults having faced substance use disorder, [...] Read more.
Drug addiction is a rising concern globally that has deeply attracted the attention of the healthcare sector. The United States is not an exception, and the drug addiction crisis there is even more serious, with 10% of adults having faced substance use disorder, while around 75% of this number has been reported as not having received any treatment. Surprisingly, there are annually over 70,000 deaths reported as being due to drug overdose. Researchers are continually searching for solutions, as the current strategies have been ineffective. Health informatics platforms like electronic health records, telemedicine, and the clinical decision support system have great potential in tracking the healthcare data of patients on an individual basis and provide precise medical support in a private space. Such technologies have been found to be useful in identifying the risk factors of drug addiction among people and mitigating them. Moreover, the platforms can be used to check prescriptions of addictive drugs such as opioids and caution healthcare providers. Programs such as the Prescription Drug Monitoring Program (PDMP) and the Drug and Alcohol Services Information Systems (DASIS) are already in action in the US, but the situation demands more in-depth studies in order to mitigate substance use disorders. Artificial intelligence (AI), when combined with health informatics, can aid in the analysis of large amounts of patient data and aid in classifying nature of addiction to assist in the provision of personalized care. Full article
(This article belongs to the Special Issue Personalized Medicine in Psychiatry: Challenges and Opportunities)
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20 pages, 8770 KiB  
Article
Study Roadmap Selection Based on the Thermal Comfort of Street Trees in Summer: A Case Study from a University Campus in China
by Guorui Zheng, Han Xu, Fan Liu, Xinya Lin, Suntian Wang and Jianwen Dong
Sustainability 2024, 16(11), 4407; https://doi.org/10.3390/su16114407 (registering DOI) - 23 May 2024
Abstract
The intensification of the urban heat island effect, characterized by persistent high temperatures in Chinese cities during summer, has led to notable shifts in urban residents’ activity patterns and travel preferences. Given that street trees, as fundamental components of urban road networks, have [...] Read more.
The intensification of the urban heat island effect, characterized by persistent high temperatures in Chinese cities during summer, has led to notable shifts in urban residents’ activity patterns and travel preferences. Given that street trees, as fundamental components of urban road networks, have significant interaction with residents, it is imperative to investigate their thermal comfort impact. This study aims to enhance the comfortable summer travel experience for urban dwellers. Fujian Agriculture and Forestry University (FAFU) was selected as the case study site, with eight street tree species identified as measurement points. The summer solstice (21 June 2023) served as the representative weather condition. Through monitoring temperature and humidity, the study explored the correlation between street tree species, their characteristic factors, and thermal comfort. Utilizing ENVI-met and ArcGIS, the thermal comfort of campus travel routes was assessed, leading to the development of a summer travel guide based on thermal comfort considerations. The research novelty lies in applying a combined ENVI-met 5.0.2 and ArcGIS 10.8 software approach for modelling and visualizing the microclimate, which enables a more precise analysis of the thermal comfort variations of different campus paths, thus improving the accuracy and applicability of the results in urban planning. The findings reveal several points. (1) Different street trees possess varying capacities to enhance human comfort, with Falcataria falcata and Mangifera indica exhibiting the strongest cooling and humidifying effects, whereas Bauhinia purpurea and Amygdalus persica perform the poorest. Additionally, the research confirms ENVI-met’s scientific accuracy and practicality for microclimate studies. (2) The contribution of street trees to the comfort of campus road travel is primarily determined by the Sky View Factor (SVF), which negatively correlates with cooling and humidifying intensity and positively with thermal comfort. (3) During midday, travel comfort conditions on campus roads are better. Based on the thermal comfort assessment, a summer roadmap was created for the campus. In this case, the campus roads indicated by road A are considered the best travel routes in summer, and the roads indicated by roads B and C are considered alternatives for travelling. This practical application demonstrates how theoretical research results can be translated into practical tools for daily commuting and urban planning. It provides data references and empirical cases for the scientific optimization and enhancement of urban roads. Full article
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