The 2023 MDPI Annual Report has
been released!
 
20 pages, 4082 KiB  
Review
Progress in Core–Shell Magnetic Mesoporous Materials for Enriching Post-Translationally Modified Peptides
by Zhenyu Zhu, Hang Fu, Yu Zhao and Qiulin Yan
J. Funct. Biomater. 2024, 15(6), 158; https://doi.org/10.3390/jfb15060158 (registering DOI) - 6 Jun 2024
Abstract
Endogenous peptides, particularly those with post-translational modifications, are increasingly being studied as biomarkers for diagnosing various diseases. However, they are weakly ionizable, have a low abundance in biological samples, and may be interfered with by high levels of proteins, peptides, and other macromolecular [...] Read more.
Endogenous peptides, particularly those with post-translational modifications, are increasingly being studied as biomarkers for diagnosing various diseases. However, they are weakly ionizable, have a low abundance in biological samples, and may be interfered with by high levels of proteins, peptides, and other macromolecular impurities, resulting in a high limit of detection and insufficient amounts of post-translationally modified peptides in real biological samples to be examined. Therefore, separation and enrichment are necessary before analyzing these biomarkers using mass spectrometry. Mesoporous materials have regular adjustable pores that can eliminate large proteins and impurities, and their large specific surface area can bind more target peptides, but this may result in the partial loss or destruction of target peptides during centrifugal separation. On the other hand, magnetic mesoporous materials can be used to separate the target using an external magnetic field, which improves the separation efficiency and yield. Core–shell magnetic mesoporous materials are widely utilized for peptide separation and enrichment due to their biocompatibility, efficient enrichment capability, and excellent recoverability. This paper provides a review of the latest progress in core–shell magnetic mesoporous materials for enriching glycopeptides and phosphopeptides and compares their enrichment performance with different types of functionalization methods. Full article
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14 pages, 236 KiB  
Opinion
A Cross-Era Discourse on ChatGPT’s Influence in Higher Education through the Lens of John Dewey and Benjamin Bloom
by Koki Mandai, Mark Jun Hao Tan, Suman Padhi and Kuin Tian Pang
Educ. Sci. 2024, 14(6), 614; https://doi.org/10.3390/educsci14060614 (registering DOI) - 6 Jun 2024
Abstract
Since its release in November 2022, ChatGPT and the related AI technology have disrupted multiple fields of society where people anticipate its pathways with a mixture of hope and fear. Among the affected fields, education, in particular, may incur one of the largest [...] Read more.
Since its release in November 2022, ChatGPT and the related AI technology have disrupted multiple fields of society where people anticipate its pathways with a mixture of hope and fear. Among the affected fields, education, in particular, may incur one of the largest impacts in the future partly due to its nature of learning and teaching knowledge, an element that is more or less questioned by the rise of these technologies. As education can be seen as a component that determines the future of every other field of society, tools such as ChatGPT must be optimally regulated to enhance its gain or mitigate its loss. To contribute to this goal, this paper approaches the state of ChatGPT and its expected impacts on higher education through the lens of two major educational theories—John Dewey’s Reflective-Thought-and-Action model and revised Bloom’s taxonomy—aiming to propose possible evaluative criteria for the optimal usage of ChatGPT in academia. As ChatGPT is a relatively new topic of research yet a topic that requires an immediate focus due to its capabilities, this paper also aims to provide these criteria as one of the concrete starting points of future research in this field. Full article
16 pages, 4396 KiB  
Article
Preparation, Characterization, and Antioxidant Properties of Self-Assembled Nanomicelles of Curcumin-Loaded Amphiphilic Modified Chitosan
by Qizhou Chen, Yuwei Jiang, Linlan Yuan, Lifen Liu, Xufeng Zhu, Rimeng Chen, Zhuo Wang, Kefeng Wu, Hui Luo and Qianqian Ouyang
Molecules 2024, 29(11), 2693; https://doi.org/10.3390/molecules29112693 (registering DOI) - 6 Jun 2024
Abstract
Curcumin (Cur) is a phytochemical with various beneficial properties, including antioxidant, anti-inflammatory, and anticancer activities. However, its hydrophobicity, poor bioavailability, and stability limit its application in many biological approaches. In this study, a novel amphiphilic chitosan wall material was synthesized. The process was [...] Read more.
Curcumin (Cur) is a phytochemical with various beneficial properties, including antioxidant, anti-inflammatory, and anticancer activities. However, its hydrophobicity, poor bioavailability, and stability limit its application in many biological approaches. In this study, a novel amphiphilic chitosan wall material was synthesized. The process was carried out via grafting chitosan with succinic anhydride (SA) as a hydrophilic group and deoxycholic acid (DA) as a hydrophobic group; 1H-NMR, FTIR, and XRD were employed to characterize the amphiphilic chitosan (CS—SA—DA). Using a low-cost, inorganic solvent-based procedure, CS—SA—DA was self-assembled to load Cur nanomicelles. This amphiphilic polymer formed self-assembled micelles with a core–shell structure and a critical micelle concentration (CMC) of 0.093 mg·mL−1. Cur-loaded nanomicelles were prepared by self-assembly and characterized by the Nano Particle Size Potential Analyzer and transmission electron microscopy (TEM). The mean particle size of the spherical Cur-loaded micelles was 770 nm. The drug entrapment efficiency and loading capacities were up to 80.80 ± 0.99% and 19.02 ± 0.46%, respectively. The in vitro release profiles of curcumin from micelles showed a constant release of the active drug molecule. Cytotoxicity studies and toxicity tests for zebrafish exhibited the comparable efficacy and safety of this delivery system. Moreover, the results showed that the entrapment of curcumin in micelles improves its stability, antioxidant, and anti-inflammatory activity. Full article
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14 pages, 4273 KiB  
Article
Highly Sensitive Balloon-like Fiber Interferometer Based on Ethanol Coated for Temperature Measurement
by Xin Ding, Qiao Lin, Shen Liu, Lianzhen Zhang, Nan Chen, Yuping Zhang and Yiping Wang
Sensors 2024, 24(11), 3684; https://doi.org/10.3390/s24113684 (registering DOI) - 6 Jun 2024
Abstract
A highly sensitivity balloon-like fiber interferometer based on ethanol coating is presented in this paper. The Mach–Zehnder interferometer is formed by bending a single-mode fiber to a balloon-like structure and nested in the Teflon tube. Then, an ethanol solution was filled into the [...] Read more.
A highly sensitivity balloon-like fiber interferometer based on ethanol coating is presented in this paper. The Mach–Zehnder interferometer is formed by bending a single-mode fiber to a balloon-like structure and nested in the Teflon tube. Then, an ethanol solution was filled into the tube of the balloon-like fiber interferometer by the capillary effect. Due to the high sensitivity of the refractive index (RI) of ethanol solutions to temperature, when the external temperature varies, the optical path difference changes. The change in temperature can be detected by the shift in the interference spectrum. Limited by the size of the balloon-like structure, three kinds of these structures with different sensitive lengths were prepared to select the best parameters. The sensitive lengths were 10, 15 and 20 mm, respectively, and the RI detection performance of each structure in 10~26% NaCl solutions was investigated experimentally. The results show that when the sensitive length is 20 mm, the RI sensitivity of the sensor is the highest, which is 212.88 nm/RIU. Ultimately, the sensitive length filled with ethanol is 20 mm. The experimental results show that the temperature sensitivity of the structure is 1.145 nm/°C in the range of 28.1 °C~35 °C, which is 10.3 times higher than that of an unfilled balloon-like structure (0.111 nm/°C). The system has the advantages of low cost and easy fabrication, which can potentially be used in high-precision temperature monitoring processes. Full article
(This article belongs to the Section Optical Sensors)
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15 pages, 4633 KiB  
Article
Faster Intra-Prediction of Versatile Video Coding Using a Concatenate-Designed CNN via DCT Coefficients
by Sio-Kei Im and Ka-Hou Chan
Electronics 2024, 13(11), 2214; https://doi.org/10.3390/electronics13112214 (registering DOI) - 6 Jun 2024
Abstract
As the next generation video coding standard, Versatile Video Coding (VVC) significantly improves coding efficiency over the current High-Efficiency Video Coding (HEVC) standard. In practice, this improvement comes at the cost of increased pre-processing complexity. This increased complexity faces the challenge of implementing [...] Read more.
As the next generation video coding standard, Versatile Video Coding (VVC) significantly improves coding efficiency over the current High-Efficiency Video Coding (HEVC) standard. In practice, this improvement comes at the cost of increased pre-processing complexity. This increased complexity faces the challenge of implementing VVC for time-consuming encoding. This work presents a technique to simplify VVC intra-prediction using Discrete Cosine Transform (DCT) feature analysis and a concatenate-designed CNN. The coefficients of the (DTC-)transformed CUs reflect the complexity of the original texture, and the proposed CNN employs multiple classifiers to predict whether they should be split. This approach can determine whether to split Coding Units (CUs) of different sizes according to the Versatile Video Coding (VVC) standard. This helps to simplify the intra-prediction process. The experimental results indicate that our approach can reduce the encoding time by 52.77% with a minimal increase of 1.48%. We use the Bjøntegaard Delta Bit Rate (BDBR) compared to the original algorithm, demonstrating a competitive result with other state-of-the-art methods in terms of coding efficiency with video quality. Full article
(This article belongs to the Special Issue Image and Video Processing Based on Deep Learning)
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21 pages, 3177 KiB  
Article
Susceptibility of Yellow Squash and Zucchini Cultivars to the Sweetpotato Whitefly, Bemisia tabaci Gennadius (MEAM1), in the Southeastern United States
by George N. Mbata, Yinping Li, Sanower Warsi and Alvin M. Simmons
Insects 2024, 15(6), 429; https://doi.org/10.3390/insects15060429 (registering DOI) - 6 Jun 2024
Abstract
The sweetpotato whitefly, Bemisia tabaci (Gennadius) Middle East–Asia Minor 1 (MEAM1), causes significant losses to vegetable crops directly by sap-feeding, inducing plant physiological disorders, and elevating the build-up of sooty mold, and indirectly by transmitting plant viruses. In this study, we evaluated the [...] Read more.
The sweetpotato whitefly, Bemisia tabaci (Gennadius) Middle East–Asia Minor 1 (MEAM1), causes significant losses to vegetable crops directly by sap-feeding, inducing plant physiological disorders, and elevating the build-up of sooty mold, and indirectly by transmitting plant viruses. In this study, we evaluated the susceptibility of 20 yellow squash and zucchini (Cucurbita pepo) cultivars to MEAM1, across three growing seasons in the southeastern United States. Weekly sampling of the numbers of MEAM1 adults, nymphs, and eggs were conducted from the fourth week after seed sowing and across 6 weeks during the summer and fall of 2021 and five weeks during the fall of 2022. In general, adult whitefly populations were high during the first week of sampling but decreased as the seasons progressed. The zucchini cultivar ‘Black Beauty’ harbored the most adults, while ‘Green Eclipse Zucchini’ was the least attractive zucchini cultivar to the adults in fall 2022. For yellow squash, ‘Early Summer’ (summer 2021) and ‘Amberpic 8455’ (summer 2021 and fall 2022) were the cultivars with the highest adult populations, while ‘Lioness’ (summer 2021) and ‘Gourmet Gold Hybrid’ (fall 2022) harbored the lowest adult counts. The whitefly egg counts across both vegetables trailed those of adults and peaked in the second week of sampling. The counts of nymphs increased as the seasons progressed, but there was a decline after the second week during fall 2021. For the yellow squash cultivars, ‘Gourmet Gold Hybrid’, (summer 2021 and fall 2022), ‘Lioness’, and ‘Fortune’ (summer 2021) recorded the highest yields. For zucchini, ‘Golden Glory’ (summer 2021) was the top performer. These results provide valuable information for whitefly management in yellow squash and zucchini based on host plant susceptibility and yield. Full article
(This article belongs to the Special Issue Sustainable Management of Arthropod Pests in Agroecosystems)
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15 pages, 4709 KiB  
Article
Improving Thermal Efficiency and Reducing Emissions with CO2 Injection during Late Stage SAGD Development
by Qi Jiang, Yang Liu, Ying Zhou, Zhongyuan Wang, Yuning Gong, Guanchen Jiang, Siyuan Huang and Chunsheng Yu
Processes 2024, 12(6), 1166; https://doi.org/10.3390/pr12061166 (registering DOI) - 6 Jun 2024
Abstract
The steam assisted gravity drainage (SAGD) process requires high energy input to maintain the continuous expansion of the steam chamber for achieving high oil recovery. In the late stage of SAGD operation where the oil rate is low and the heat loss is [...] Read more.
The steam assisted gravity drainage (SAGD) process requires high energy input to maintain the continuous expansion of the steam chamber for achieving high oil recovery. In the late stage of SAGD operation where the oil rate is low and the heat loss is high from a mature steam chamber, maintaining steam chamber pressure with a lower steam injection is the key to maintaining the economic oil-to-steam ratio (OSR). Both laboratory studies and field tests have demonstrated the effectiveness of adding a non-condensable gas (NCG) to the SAGD steam chamber for improving the overall thermal efficiency. In this study, a multi-well reservoir model was built based on the detailed geological description from an operating SAGD project area, which contains thick pay and top water. Grounded with the history matching of more than 20 years of production using CSS (cyclic steam stimulation) and SAGD as follow-up process, the model was applied to optimize the operating strategies for the late stage of SAGD production. The results from this study demonstrated that the co-injection of steam with CO2 or the injection of CO2 only has potential to improve the OSR and reduce emissions by more than 50% through the improvement in steam-saving and the storage of CO2. The results from reservoir modeling indicate that, with the current volume of a steam chamber and an operating pressure of 4.0 MPa, about 55 sm3 of CO2 could be sequestrated and utilized for producing 1.0 m3 of oil from this reservoir through the replacement of a steam injection with CO2 in the late stage of SAGD operation. Full article
(This article belongs to the Special Issue Process Technologies for Heavy Oils and Residua Upgradings)
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21 pages, 957 KiB  
Systematic Review
Participatory and Inclusive Design Models from the Perspective of Universal Design for Children with Autism: A Systematic Review
by Rallyson dos Santos Ferreira and Thaís Helena Chaves de Castro
Educ. Sci. 2024, 14(6), 613; https://doi.org/10.3390/educsci14060613 (registering DOI) - 6 Jun 2024
Abstract
As technology continues to evolve rapidly and new computing resources are introduced, the utilization of these tools poses increasing complexity for individuals with physical or neurological needs, primarily due to the absence of accessibility and inclusive principles. A promising solution involves shifting the [...] Read more.
As technology continues to evolve rapidly and new computing resources are introduced, the utilization of these tools poses increasing complexity for individuals with physical or neurological needs, primarily due to the absence of accessibility and inclusive principles. A promising solution involves shifting the focus from disabilities to abilities, and in that way, creating adaptive environments capable of accommodating various user profiles and minimizing disparities, ensuring universal access. However, a notable challenge arises, particularly for individuals with autism, who face barriers in participating in the software development process due to psychological conditions hindering their responsiveness to traditional data collection methods like questionnaires. This systematic review aims to investigate scientific articles that delve into participatory and inclusive design models tailored for children with autism. The primary objective is to explore adaptability within universal design frameworks in developing new computational artifacts. By addressing this gap, the review contributes to the ongoing effort to create more inclusive and adaptive digital environments, focusing on improving accessibility and enriching the experiences of users with autism. Full article
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16 pages, 1104 KiB  
Review
Immune Checkpoints in Endometriosis—A New Insight in the Pathogenesis
by Dorota Suszczyk, Wiktoria Skiba, Anna Pawłowska-Łachut, Izabela Dymanowska-Dyjak, Karolina Włodarczyk, Roman Paduch and Iwona Wertel
Int. J. Mol. Sci. 2024, 25(11), 6266; https://doi.org/10.3390/ijms25116266 (registering DOI) - 6 Jun 2024
Abstract
Endometriosis (EMS) is an oestrogen-dependent, chronic disease affecting women of a reproductive age. One of the important factors involved in the development of this disease is the complex disorders associated with the functioning of the immune system. Recent evidence has shown that EMS [...] Read more.
Endometriosis (EMS) is an oestrogen-dependent, chronic disease affecting women of a reproductive age. One of the important factors involved in the development of this disease is the complex disorders associated with the functioning of the immune system. Recent evidence has shown that EMS development is associated with changes in systemic and local immunity, including functional disturbances of effector and antigen-presenting cells. One of the reasons for immune imbalance can be the improper expression of immune checkpoints (ICPs). ICPs and their ligands are responsible for maintaining self-tolerance and the modulation of the initiation, duration, and magnitude of the immune response of effector cells in normal tissues to avoid tissue damage. Considering the complex nature of co-stimulatory or co-inhibitory ICPs and the signalling between effector cells and APCs, we hypothesise that changes in cells’ activity caused by ICPs may lead to serious immune system disturbances in patients with endometriosis. Moreover, both upregulation and downregulation in the expression of ICPs may be implicated in this process, including the reduced activity of effector cells against endometrial implants and disturbances in the antigen-presenting process. In this narrative review, we discuss, for the first time, key findings from the emerging literature, describing the associations between ICPs and their possible implication in the pathogenesis of endometriosis. Full article
(This article belongs to the Special Issue Endometriosis: From Molecular Basis to Therapy)
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25 pages, 1606 KiB  
Review
Hydrochar Production by Hydrothermal Carbonization: Microwave versus Supercritical Water Treatment
by Modupe Elizabeth Ojewumi and Gang Chen
Biomass 2024, 4(2), 574-598; https://doi.org/10.3390/biomass4020031 (registering DOI) - 6 Jun 2024
Abstract
Hydrochar, a carbonaceous material produced through hydrothermal carbonization of lignocellulosic biomass, has gained significant attention due to its versatile applications in agriculture, energy, and environmental protection. This review extensively explores hydrochar production by hydrothermal carbonization, specifically microwave and supercritical water treatment. These innovative [...] Read more.
Hydrochar, a carbonaceous material produced through hydrothermal carbonization of lignocellulosic biomass, has gained significant attention due to its versatile applications in agriculture, energy, and environmental protection. This review extensively explores hydrochar production by hydrothermal carbonization, specifically microwave and supercritical water treatment. These innovative approaches hold substantial promises in enhancing the efficiency and sustainability of hydrochar synthesis. The review commences with an in-depth analysis of the fundamental principles governing hydrochar production, emphasizing the distinct mechanisms of microwave and supercritical water treatment. Insightful discussions on the influence of critical process parameters, such as temperature, pressure, and residence time, underscore these factors’ pivotal role in tailoring hydrochar characteristics. Drawing on a wide array of research findings, the review evaluates the impact of different lignocellulosic biomass feedstocks on hydrochar properties, which is crucial for optimizing hydrochar production. The comparative assessment of microwave and supercritical water treatment sheds light on their unique advantages and challenges, guiding researchers toward informed decision-making in selection of methods. Furthermore, the review delves into the myriad applications of hydrochar, spanning soil amendment, carbon sequestration, and renewable energy. Environmental considerations and life cycle assessments associated with microwave and supercritical water treatment are also explored, providing a holistic perspective on the sustainability of hydrochar production. In conclusion, this comprehensive review synthesizes current knowledge on hydrochar production from diverse lignocellulosic biomass sources, emphasizing the efficacy of microwave and supercritical water methods. Full article
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18 pages, 528 KiB  
Review
Milk Odd- and Branched-Chain Fatty Acids as Biomarkers of Rumen Fermentation
by Robert Kupczyński, Katarzyna Pacyga, Kamila Lewandowska, Michał Bednarski and Antoni Szumny
Animals 2024, 14(11), 1706; https://doi.org/10.3390/ani14111706 (registering DOI) - 6 Jun 2024
Abstract
Cow’s milk and dairy products are the primary sources of OBCFAs, which have beneficial health properties. The goal of this study was to identify the factors that influence the content of OBCFAs in cow’s milk and to indicate which OBCFAs can serve as [...] Read more.
Cow’s milk and dairy products are the primary sources of OBCFAs, which have beneficial health properties. The goal of this study was to identify the factors that influence the content of OBCFAs in cow’s milk and to indicate which OBCFAs can serve as biomarkers for fermentation processes. The content of OBCFAs in milk depends on the species of ruminants, with studies showing that this varies between 3.33% (in goat’s milk) and 5.02% (in buffalo’s milk). These differences also stem from the animals’ energy balance, lactation phases, forage-to-concentrate ratio, and the presence of bioactive compounds in feeds, as well as management practices and environmental conditions. The OBCFAs in milk fat mainly come from rumen bacteria, but can also be synthesized de novo in the mammary gland, making them potentially useful noninvasive indicators of rumen fermentation. The concentration of BCFA is lower in colostrum and transitional milk than in full lactation milk. The proportions of total OBCFAs are higher in first- and second-parity cows. The most effective predictors of the biohydrogenation of fatty acids in the rumen are likely C18:2 cis-9, trans-11, iso-C16:0, and iso-C13:0. OBCFAs have been identified as potential biomarkers for rumen function, because their synthesis depends on specific bacteria. Strong predictors of subclinical ruminal acidosis include iso-C14:0, iso-C13:0, and C15:0. The concentration of ∑ OBCFA >C16 in milk is associated with fat mobilization and serves as a significant marker of the energy balance in cows. Full article
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21 pages, 2118 KiB  
Article
Diagnostic Utility of Selected Matrix Metalloproteinases (MMP-2, MMP-3, MMP-11, MMP-26), HE4, CA125 and ROMA Algorithm in Diagnosis of Ovarian Cancer
by Aleksandra Kicman, Ewa Gacuta, Monika Kulesza, Ewa Grażyna Będkowska, Rafał Marecki, Ewa Klank-Sokołowska, Paweł Knapp, Marek Niczyporuk and Sławomir Ławicki
Int. J. Mol. Sci. 2024, 25(11), 6265; https://doi.org/10.3390/ijms25116265 (registering DOI) - 6 Jun 2024
Abstract
Ovarian cancer (OC) has an unfavorable prognosis. Due to the lack of effective screening tests, new diagnostic methods are being sought to detect OC earlier. The aim of this study was to evaluate the concentration and diagnostic utility of selected matrix metalloproteinases (MMPs) [...] Read more.
Ovarian cancer (OC) has an unfavorable prognosis. Due to the lack of effective screening tests, new diagnostic methods are being sought to detect OC earlier. The aim of this study was to evaluate the concentration and diagnostic utility of selected matrix metalloproteinases (MMPs) as OC markers in comparison with HE4, CA125 and the ROMA algorithm. The study group consisted of 120 patients with OC; the comparison group consisted of 70 patients with benign lesions and 50 healthy women. MMPs were determined via the ELISA method, HE4 and CA125 by CMIA. Patients with OC had elevated levels of MMP-3 and MMP-11, similar to HE4, CA125 and ROMA values. The highest SE, SP, NPV and PPV values were found for MMP-26, CA125 and ROMA in OC patients. Performing combined analyses of ROMA with selected MMPs increased the values of diagnostic parameters. The topmost diagnostic power of the test was obtained for MMP-26, CA125, HE4 and ROMA and performing combined analyses of MMPs and ROMA enhanced the diagnostic power of the test. The obtained results indicate that the tested MMPs do not show potential as stand-alone OC biomarkers, but can be considered as additional tests to raise the diagnostic utility of the ROMA algorithm. Full article
(This article belongs to the Special Issue Molecular Advances in Ovarian Cancer)
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13 pages, 1034 KiB  
Article
Ground Management Through Grazing in Rainfed Olive Orchards Provides High Olive Yields and Has Other Potential Benefits for Both the Soil and the Farmer
by Paulo Dimande, Margarida Arrobas, Carlos M. Correia and Manuel Ângelo Rodrigues
Agriculture 2024, 14(6), 897; https://doi.org/10.3390/agriculture14060897 (registering DOI) - 6 Jun 2024
Abstract
Soil management in orchards can have several economic and environmental implications. In this study, three different soil management systems were compared in a dry-farmed olive grove: conventional tillage (tillage), glyphosate-based herbicide (herbicide) and sheep grazing. The experiment lasted eleven years (2011–2022) and was [...] Read more.
Soil management in orchards can have several economic and environmental implications. In this study, three different soil management systems were compared in a dry-farmed olive grove: conventional tillage (tillage), glyphosate-based herbicide (herbicide) and sheep grazing. The experiment lasted eleven years (2011–2022) and was carried out after a previous trial conducted on the same plot with the same treatments and duration (2001–2011). However, in the earlier trial, the herbicide and sheep grazing treatments switched positions in the plot, while the tillage treatment remained in its original place. The average total accumulated olive yields between 2011 and 2022 were 225.1, 230.9, and 245.0 kg tree−1 for the sheep grazing, tillage, and herbicide treatments, respectively. However, no significant differences were observed between the treatments. The levels of total organic carbon in the soil, measured in samples collected in the last year of the study, were 41.3, 33.7, and 37.3 g kg−1, respectively, for the same treatments. These findings indicated that the tillage treatment exhibited lower soil organic matter content and reduced bioavailability of some nutrients, which raises concerns about its sustainability. On the contrary, employing sheep grazing with an appropriate stocking rate, effectively controlling vegetation in the spring, ensured favourable soil properties and olive yields comparable to the other treatments. Moreover, the sheep grazing approach provides supplementary advantages to the farmer, including revenue from the sale of animal products and the opportunity to transition to organic farming systems, which better align with the preferences of contemporary societies. Full article
(This article belongs to the Special Issue Soil Conservation in Olive Orchard)
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24 pages, 6459 KiB  
Article
An Efficient Ground Moving Target Imaging Method for Synthetic Aperture Radar Based on Scaled Fourier Transform and Scaled Inverse Fourier Transform
by Xin Zhang, Haoyu Zhu, Ruixin Liu, Jun Wan and Zhanye Chen
Remote Sens. 2024, 16(11), 2039; https://doi.org/10.3390/rs16112039 (registering DOI) - 6 Jun 2024
Abstract
The unknown relative motions between synthetic aperture radar (SAR) and a ground moving target will lead to serious range cell migration (RCM) and Doppler frequency spread (DFS). The energy of the moving target will defocus, given the effect of the RCM and DFS. [...] Read more.
The unknown relative motions between synthetic aperture radar (SAR) and a ground moving target will lead to serious range cell migration (RCM) and Doppler frequency spread (DFS). The energy of the moving target will defocus, given the effect of the RCM and DFS. The moving target will easily produce Doppler ambiguity, due to the low pulse repetition frequency of radar, and the Doppler ambiguity complicates the corrections of the RCM and DFS. In order to address these issues, an efficient ground moving target focusing method for SAR based on scaled Fourier transform and scaled inverse Fourier transform is presented. Firstly, the operations based on the scaled Fourier transform and scaled inverse Fourier transforms are presented to focus the moving targets in consideration of Doppler ambiguity. Subsequently, in accordance with the detailed analysis of multiple target focusing, the spurious peak related to the cross term is removed. The proposed method can accurately eliminate the DFS and RCM, and the well-focused result of the moving target can be achieved under the complex Doppler ambiguity. Then, the blind speed sidelobe can be further avoided. The presented method has high computational efficiency without the step of parameter search. The simulated and measured SAR data are provided to demonstrate the effectiveness of the developed method. Full article
(This article belongs to the Special Issue Technical Developments in Radar—Processing and Application)
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14 pages, 1672 KiB  
Article
Tetranuclear Polypyridylruthenium(II) Complexes as Selective Nucleic Acid Stains for Flow Cytometric Analysis of Monocytic and Epithelial Lung Carcinoma Large Extracellular Vesicles
by Kartika Wardhani, Aviva Levina, Biyun Sun, Haipei Zou, Georges E. R. Grau, F. Richard Keene, J. Grant Collins and Peter A. Lay
Biomolecules 2024, 14(6), 664; https://doi.org/10.3390/biom14060664 (registering DOI) - 6 Jun 2024
Abstract
Selective staining of extracellular vesicles (EVs) is a major challenge for diagnostic and therapeutic applications. Herein, the EV labeling properties of a new class of tetranuclear polypyridylruthenium(II) complexes, Rubb7-TNL and Rubb7-TL, as phosphorescent stains are described. These new stains [...] Read more.
Selective staining of extracellular vesicles (EVs) is a major challenge for diagnostic and therapeutic applications. Herein, the EV labeling properties of a new class of tetranuclear polypyridylruthenium(II) complexes, Rubb7-TNL and Rubb7-TL, as phosphorescent stains are described. These new stains have many advantages over standard stains to detect and characterize EVs, including: high specificity for EV staining versus cell staining; high phosphorescence yields; photostability; and a lack of leaching from EVs until incorporation with target cells. As an example of their utility, large EVs released from control (basal) or lipopolysaccharide (LPS)-stimulated THP-1 monocytic leukemia cells were studied as a model of immune system EVs released during bacterial infection. Key findings from EV staining combined with flow cytometry were as follows: (i) LPS-stimulated THP-1 cells generated significantly larger and more numerous large EVs, as compared with those from unstimulated cells; (ii) EVs retained native EV physical properties after staining; and (iii) the new stains selectively differentiated intact large EVs from artificial liposomes, which are models of cell membrane fragments or other lipid-containing debris, as well as distinguished two distinct subpopulations of monocytic EVs within the same experiment, as a result of biochemical differences between unstimulated and LPS-stimulated monocytes. Comparatively, the staining patterns of A549 epithelial lung carcinoma-derived EVs closely resembled those of THP-1 cell line-derived EVs, which highlighted similarities in their selective staining despite their distinct cellular origins. This is consistent with the hypothesis that these new phosphorescent stains target RNA within the EVs. Full article
(This article belongs to the Section Cellular Biochemistry)
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10 pages, 1476 KiB  
Article
Temperature Dependence of Total Ionizing Dose Effects of β-Ga2O3 Schottky Barrier Diodes
by Weili Fu, Teng Ma, Zhifeng Lei, Chao Peng, Hong Zhang, Zhangang Zhang, Tao Xiao, Hongjia Song, Yuangang Wang, Jinbin Wang, Zhao Fu and Xiangli Zhong
Electronics 2024, 13(11), 2215; https://doi.org/10.3390/electronics13112215 (registering DOI) - 6 Jun 2024
Abstract
This paper investigates the temperature-dependent effects of gamma-ray irradiation on β-Ga2O3 vertical Schottky barrier diodes (SBDs) under a 100 V reverse bias condition at a total dose of 1 Mrad(Si). As the irradiation dose increased, the radiation damage became more [...] Read more.
This paper investigates the temperature-dependent effects of gamma-ray irradiation on β-Ga2O3 vertical Schottky barrier diodes (SBDs) under a 100 V reverse bias condition at a total dose of 1 Mrad(Si). As the irradiation dose increased, the radiation damage became more severe. The total ionizing dose (TID) degradation behavior and mechanisms were evaluated through DC, capacitance–voltage (C-V), and low-frequency noise (LFN) measurements by varying irradiation, and the test results indicated that TID effects introduced interface defects and altered the carrier concentration within the material. The impact of TID effects was more pronounced at lower temperatures compared to higher temperatures. Additionally, the annealing effect in the high-temperature experimental conditions ameliorated the growth of interface trap defects caused by irradiation. These results suggest that compared to low-temperature testing, the device exhibits higher TID tolerance after high-temperature exposure, providing valuable insights for in-depth radiation reliability studies on subsequent related devices. Full article
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14 pages, 841 KiB  
Article
Hospitalisations Due to Dental Infection: A Retrospective Clinical Audit from an Australian Public Hospital
by Mafaz Ullah, Muhammad Irshad, Albert Yaacoub, Eric Carter and Stephen Cox
Dent. J. 2024, 12(6), 173; https://doi.org/10.3390/dj12060173 (registering DOI) - 6 Jun 2024
Abstract
The aim of this clinical audit is to evaluate the characteristics of dental infections requiring hospitalisations, which may help improve preventative and management policies. This study retrospectively evaluated the records of patients admitted to the Nepean hospital, Kingswood, New South Wales, Australia, due [...] Read more.
The aim of this clinical audit is to evaluate the characteristics of dental infections requiring hospitalisations, which may help improve preventative and management policies. This study retrospectively evaluated the records of patients admitted to the Nepean hospital, Kingswood, New South Wales, Australia, due to dental infections between 2018 and 2019. A total of 102 patients, mostly in their thirties with equal gender distribution, were admitted with dental infections, presenting with pain (100%), swelling (99%), trismus (40.2%), dysphagia (27.4%), fever (21%) [>37 °C], tachycardia (24.8%) and tachypnoea (9.3%). Most patients presented (68%) on weekends, outside regular working hours, and public holidays. A total of 52.5% of patients had taken prior antibiotics. Dental caries, smoking, mental health issues, and illicit drug use were featured strongly. The majority of patients (56.4%) underwent treatment under local anaesthesia. The total length of hospital stay was 271 days (mean 2.7, SD 1.6). Augmentin was the most prescribed antibiotic. Complications were reported in 8.8% of the patients, primarily due to airway compromise. Dental infections leading to hospitalisations continue to be a burden on the healthcare system. A notable finding was that the presentations were primarily on weekends, outside regular working hours, and public holidays, and the majority required dental interventions under local anaesthesia. The provision of on-call emergency dental services may reduce potentially preventable hospitalisations and the length of hospital stay. Full article
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15 pages, 2968 KiB  
Article
Synthesis, Biological, and Computational Evaluations of Conformationally Restricted NAD-Mimics as Discriminant Inhibitors of Human NMN-Adenylyltransferase Isozymes
by Federica Matteucci, Marta Ferrati, Eleonora Spinozzi, Alessia Piergentili, Fabio Del Bello, Gianfabio Giorgioni, Leonardo Sorci, Riccardo Petrelli and Loredana Cappellacci
Pharmaceuticals 2024, 17(6), 739; https://doi.org/10.3390/ph17060739 (registering DOI) - 6 Jun 2024
Abstract
Nicotinamide adenine dinucleotide (NAD) cofactor metabolism plays a significant role in cancer development. Tumor cells have an increased demand for NAD and ATP to support rapid growth and proliferation. Limiting the amount of available NAD by targeting critical NAD biosynthesis enzymes has emerged [...] Read more.
Nicotinamide adenine dinucleotide (NAD) cofactor metabolism plays a significant role in cancer development. Tumor cells have an increased demand for NAD and ATP to support rapid growth and proliferation. Limiting the amount of available NAD by targeting critical NAD biosynthesis enzymes has emerged as a promising anticancer therapeutic approach. In mammals, the enzyme nicotinamide/nicotinic acid adenylyltransferase (NMNAT) catalyzes a crucial downstream reaction for all known NAD synthesis routes. Novel nicotinamide/nicotinic acid adenine dinucleotide (NAD/NaAD) analogues 14, containing a methyl group at the ribose 2′-C and 3′-C-position of the adenosine moiety, were synthesized as inhibitors of the three isoforms of human NMN-adenylyltransferase, named hNMNAT-1, hNMNAT-2, and hNMNAT-3. An NMR-based conformational analysis suggests that individual NAD-analogues (14) have distinct conformational preferences. Biological evaluation of dinucleotides 14 as inhibitors of hNMNAT isoforms revealed structural relationships between different conformations (North-anti and South-syn) and enzyme-inhibitory activity. Among the new series of NAD analogues synthesized and tested, the 2′-C-methyl-NAD analogue 1 (Ki = 15 and 21 µM towards NMN and ATP, respectively) emerged as the most potent and selective inhibitor of hNMNAT-2 reported so far. Finally, we rationalized the in vitro bioactivity and selectivity of methylated NAD analogues with in silico studies, helping to lay the groundwork for rational scaffold optimization. Full article
(This article belongs to the Section Medicinal Chemistry)
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14 pages, 303 KiB  
Article
Confession and Confusion: Misinformation about Religion in the Journalistic Sphere
by Valentina Laferrara, Maria Carmen Fernández and Verónica Israel Turim
Societies 2024, 14(6), 84; https://doi.org/10.3390/soc14060084 (registering DOI) - 6 Jun 2024
Abstract
The media often limit religious coverage to reporting on statements, appointments, opinions, and activities, ignoring in-depth treatment and emphasizing negative news. Media, rather than helping to combat prejudice and promote understanding between communities, have contributed to fuelling intolerance towards religious communities. This study [...] Read more.
The media often limit religious coverage to reporting on statements, appointments, opinions, and activities, ignoring in-depth treatment and emphasizing negative news. Media, rather than helping to combat prejudice and promote understanding between communities, have contributed to fuelling intolerance towards religious communities. This study aims to contribute to the understanding of the presence and treatment of religious issues. Through a combination of content analysis focused on Catalan media publications between 1 January 2020 and 31 December 2021, and a focus group with 12 journalists specialized in religious coverage for Catalan newspapers, this research sheds light on the prevailing trends, seeking to answer what is the space of religious content, which can include both content messages produced by religious communities that refer to their own or other faiths and/or content that discusses issues related to religions or religious groups. Occupies in the media agenda, how this content is addressed, and which are the perceptions of journalists regarding the coverage of religious issues. Moreover, we seek to unveil potential actions needed to improve it. The results of this study suggest that there is a tendency to publish limited religious content in the media, potentially shaping perceptions of religion. Furthermore, when religious topics are covered, they focus on Catholicism and Islam, marginalizing other faiths. What is more, stereotypes and misconceptions persist, which could be due to their continued priority to cover scandalous or negative events related to religion. Full article
(This article belongs to the Special Issue Fake News Post-COVID-19)
12 pages, 558 KiB  
Article
Associations between Serum Kallistatin Levels and Markers of Glucose Homeostasis, Inflammation, and Lipoprotein Metabolism in Patients with Type 2 Diabetes and Nondiabetic Obesity
by Hajnalka Lőrincz, Sára Csiha, Balázs Ratku, Sándor Somodi, Ferenc Sztanek, György Paragh and Mariann Harangi
Int. J. Mol. Sci. 2024, 25(11), 6264; https://doi.org/10.3390/ijms25116264 (registering DOI) - 6 Jun 2024
Abstract
Kallistatin is an endogenous serine proteinase inhibitor with various functions, including antioxidative, anti-inflammatory, and anti-atherosclerotic properties. To date, associations between kallistatin and lipoprotein subfractions are poorly investigated. In this study, we enrolled 62 obese patients with type 2 diabetes (T2D), 106 nondiabetic obese [...] Read more.
Kallistatin is an endogenous serine proteinase inhibitor with various functions, including antioxidative, anti-inflammatory, and anti-atherosclerotic properties. To date, associations between kallistatin and lipoprotein subfractions are poorly investigated. In this study, we enrolled 62 obese patients with type 2 diabetes (T2D), 106 nondiabetic obese (NDO) subjects matched in gender, age, and body mass index, as well as 49 gender- and age-matched healthy, normal-weight controls. Serum kallistatin levels were measured with ELISA, and lipoprotein subfractions were analyzed using Lipoprint® (Quantimetrix Corp., Redondo Beach, CA, USA) gel electrophoresis. Kallistatin concentrations were significantly higher in T2D patients compared to NDO and control groups. We found significant positive correlations between very-low-density lipoprotein (VLDL), small high-density lipoprotein (HDL) subfractions, glucose, hemoglobin A1c (HbA1c), betatrophin, and kallistatin, while negative correlations were detected between mean low-density lipoprotein (LDL) size, large and intermediate HDL subfractions, and kallistatin in the whole study population. The best predictor of kallistatin was HbA1c in T2D patients, high-sensitivity C-reactive protein (hsCRP) and betatrophin in NDO patients, and hsCRP in controls. Our results indicate that kallistatin expression might be induced by persistent hyperglycemia in T2D, while in nondiabetic subjects, its production might be associated with systemic inflammation. The correlation of kallistatin with lipid subfractions may suggest its putative role in atherogenesis. Full article
(This article belongs to the Special Issue Lipoprotein Metabolism in Health and Disease 2.0)
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18 pages, 5275 KiB  
Article
Comprehensive Insights into the Remarkable Function and Regulatory Mechanism of FluG during Asexual Development in Beauveria bassiana
by Fang Li, Juefeng Zhang, Haiying Zhong, Kaili Yu and Jianming Chen
Int. J. Mol. Sci. 2024, 25(11), 6261; https://doi.org/10.3390/ijms25116261 (registering DOI) - 6 Jun 2024
Abstract
Asexual development is the main propagation and transmission mode of Beauveria bassiana and the basis of its pathogenicity. The regulation mechanism of conidiation and the key gene resources for utilization are key links to improving the conidia yield and quality of Beauveria bassiana [...] Read more.
Asexual development is the main propagation and transmission mode of Beauveria bassiana and the basis of its pathogenicity. The regulation mechanism of conidiation and the key gene resources for utilization are key links to improving the conidia yield and quality of Beauveria bassiana. Their clarification may promote the industrialization of fungal pesticides. Here, we compared the regulation of morphology, resistance to external stress, virulence, and nutrient utilization capacity between the upstream developmental regulatory gene fluG and the key genes brlA, abaA, and wetA in the central growth and development pathway. The results showed that the ΔbrlA and ΔabaA mutants completely lost the capacity to conidiate and that the ΔwetA mutant had seriously reduced conidiation capacity. Although the deletion of fluG did not reduce the conidiation ability as much as deletions of brlA, abaA, and wetA, it significantly reduced the fungal response to external stress, virulence, and nutrient utilization, while the deletion of the three other genes had little effect. Via transcriptome analysis and screening the yeast nuclear system library, we found that the differentially expressed genes in the ΔfluG mutants were concentrated in the signaling pathways of ABC transporters, propionate metabolism, tryptophan metabolism, DNA replication, mismatch repair, and fatty acid metabolism. FluG directly acted on 40 proteins that were involved in various signaling pathways such as metabolism, oxidative stress, and cell homeostasis. The analysis indicated that the regulatory function of fluG was mainly involved in DNA replication, cell homeostasis, fungal growth and metabolism, and the response to external stress. Our results revealed the biological function of fluG in asexual development and the responses to several environmental stresses as well as its influence on the asexual development regulatory network in B. bassiana. Full article
(This article belongs to the Section Molecular Microbiology)
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14 pages, 650 KiB  
Article
Understanding the Impact of the COVID-19 Pandemic on Mental Health among a Sample of University Workers in the United Arab Emirates
by Anamika V. Misra, Heba M. Mamdouh, Anita Dani, Vivienne Mitchell, Hamid Y. Hussain, Gamal M. Ibrahim, Reham Kotb and Wafa K. Alnakhi
Healthcare 2024, 12(11), 1153; https://doi.org/10.3390/healthcare12111153 (registering DOI) - 6 Jun 2024
Abstract
Research on the mental health of university staff during the COVID-19 pandemic has uncovered a high prevalence of probable anxiety, depression, and post-traumatic stress disorder among academic and non-academic staff in many parts of the world. This study aimed to assess the prevalence [...] Read more.
Research on the mental health of university staff during the COVID-19 pandemic has uncovered a high prevalence of probable anxiety, depression, and post-traumatic stress disorder among academic and non-academic staff in many parts of the world. This study aimed to assess the prevalence of anxiety, depressive symptoms, and resilience among a sample of faculty and staff members working in the Higher College of Technology campuses in the UAE. From September to November 2021, a cross-sectional study was carried out using an online survey. The Generalized Anxiety Disorder 7-item scale, The Patient Health Questionnaire (9-items), and the Connor–Davidson Resilience Scale were used to assess anxiety, depression, and resilience. The impact of COVID-19 was assessed using a designated list of questions. The results demonstrated that the COVID-19 pandemic had impacted the mental health of the studied sample of university workers, with almost 16% of the participants having moderate-to-severe depression and anxiety symptoms. This study highlighted significant differences in the participants’ depressive and anxiety symptoms due to sociodemographic differences. Depression and anxiety symptoms were most prevalent among females, those of UAE nationality, and never-married workers, with females scoring 5.81 on the PHQ-9 compared to only 4.10 in males, p = 0.004 *. UAE-national participants had significantly higher mean PHQ-9 scores than their non-national counterparts (6.37 ± 5.49 SD versus 4.77 ± 5.1 SD, respectively, p = 0.040 *). Overall, the total mean scores of all participants were below the assumed cut-off threshold of having a high resilience level (29.51 ± 7.53 SD). The results showed a significant difference in severe depression symptoms as a result of the impact of COVID-19. These results could imply that the COVID-19 pandemic might have augmented negative mental health impacts on this sample of university workers. This study highlighted some areas where the responsible authorities can intervene to further protect and enhance the mental health of university workers, particularly after the COVID-19 pandemic. Full article
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27 pages, 20444 KiB  
Article
Investigating User Experience of an Immersive Virtual Reality Simulation Based on a Gesture-Based User Interface
by Teemu H. Laine and Hae Jung Suk
Appl. Sci. 2024, 14(11), 4935; https://doi.org/10.3390/app14114935 (registering DOI) - 6 Jun 2024
Abstract
The affordability of equipment and availability of development tools have made immersive virtual reality (VR) popular across research fields. Gesture-based user interface has emerged as an alternative method to handheld controllers to interact with the virtual world using hand gestures. Moreover, a common [...] Read more.
The affordability of equipment and availability of development tools have made immersive virtual reality (VR) popular across research fields. Gesture-based user interface has emerged as an alternative method to handheld controllers to interact with the virtual world using hand gestures. Moreover, a common goal for many VR applications is to elicit a sense of presence in users. Previous research has identified many factors that facilitate the evocation of presence in users of immersive VR applications. We investigated the user experience of Four Seasons, an immersive virtual reality simulation where the user interacts with a natural environment and animals with their hands using a gesture-based user interface (UI). We conducted a mixed-method user experience evaluation with 21 Korean adults (14 males, 7 females) who played Four Seasons. The participants filled in a questionnaire and answered interview questions regarding presence and experience with the gesture-based UI. The questionnaire results indicated high ratings for presence and gesture-based UI, with some issues related to the realism of interaction and lack of sensory feedback. By analyzing the interview responses, we identified 23 potential presence factors and proposed a classification for organizing presence factors based on the internal–external and dynamic–static dimensions. Finally, we derived a set of design principles based on the potential presence factors and demonstrated their usefulness for the heuristic evaluation of existing gesture-based immersive VR experiences. The results of this study can be used for designing and evaluating presence-evoking gesture-based VR experiences. Full article
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