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10 pages, 2232 KiB  
Article
Proactive Use of a Human Milk Fat Modular in the Neonatal Intensive Care Unit: A Standardized Feeding Protocol
by Amanda Salley and Martin L. Lee
Nutrients 2024, 16(8), 1206; https://doi.org/10.3390/nu16081206 (registering DOI) - 18 Apr 2024
Abstract
An exclusive human milk diet (EHMD) and standardized feeding protocols are two critical methods for safely feeding very low birth weight (VLBW) infants. Our institution initiated a standardized feeding protocol for all VLBW infants in 2018. In this protocol, a human milk fat [...] Read more.
An exclusive human milk diet (EHMD) and standardized feeding protocols are two critical methods for safely feeding very low birth weight (VLBW) infants. Our institution initiated a standardized feeding protocol for all VLBW infants in 2018. In this protocol, a human milk fat modular was used only reactively when an infant had poor weight gain, fluid restriction, or hypoglycemia. As part of our NICU quality improvement program, internal utilization review data revealed a potential opportunity to improve growth and reduce costs. While maintaining the EHMD, a simple feeding guideline process change could provide cost savings without sacrificing caloric density or growth. We examined this process change in pre-post cohorts of VLBW infants. Methods: Our revised feeding protocol, established in October 2021, called for a human milk fat modular (Prolact CR) to be added to all infant feeding when parenteral nutrition (PN) and lipids were discontinued. The human milk fat modular concentration is 4 mL per 100 mL feed, providing approximately an additional 2 kcal/oz. We tracked data to compare (1) the use of the human milk fat modular, (2) the use of the human milk +8 fortifier, (3) overall growth before and after feeding protocol changes, and (4) cost differences between protocols. Results: Thirty-six VLBW infants were followed prospectively upon the introduction of the revised feeding protocol. In the revised era, the need for human milk +8 fortifier decreased from 43% to 14%. The decrease in the cost of a more costly fortifier provided a cost savings of USD 2967.78 on average per infant. Overall growth improved from birth to discharge, with severe malnutrition declining from 3.3% to 2.7% and moderate malnutrition declining from 37% to 8%. Conclusions: With the proactive use of a human milk fat modular in a standardized feeding protocol, our VLBW infants showed improved growth, lower malnutrition rates, and decreased use of higher caloric fortifiers. Full article
(This article belongs to the Special Issue Effects of Early Nutrition on Premature Infants)
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21 pages, 22246 KiB  
Article
Thermal and Mechanical Stress Analysis in Aircraft Hybrid Panels with Multi-Bolt Joints
by Junhua Zhang, Jie Zheng, Jianjiang Zeng, Guang Yang and Mingbo Tong
Materials 2024, 17(8), 1872; https://doi.org/10.3390/ma17081872 (registering DOI) - 18 Apr 2024
Abstract
This study investigates the thermal stress and bolt load distribution in a hybrid panel structure of an aircraft mechanical joint under extreme temperatures. The hybrid panel structure comprises two aluminum alloy splices, six T-shaped composite stringers, and two composite skins, secured together with [...] Read more.
This study investigates the thermal stress and bolt load distribution in a hybrid panel structure of an aircraft mechanical joint under extreme temperatures. The hybrid panel structure comprises two aluminum alloy splices, six T-shaped composite stringers, and two composite skins, secured together with 96 bolts. This study analyzed the strain induced by thermal stress on composite materials and metals within the structure across temperatures, employing temperature environment tests ranging from room temperature to −54 °C, alongside a carrying capacity test at −54 °C. Furthermore, a three-dimensional simulation model of the panel structure was developed, incorporating considerations for contact, metal elastoplasticity, and the progressive damage failure of composite materials. This model facilitated the determination of thermal stress and bolt load distribution patterns. The results indicate a strong consistency between the finite element analysis outcomes and the experimental data. Temperature variations exacerbate the uneven distribution of bolt loads, concentrating the load near the edges of the hybrid structure while diminishing it in the center. The bolt load distribution parallel to the mechanical load direction forms an “M” shape, with a maximum load magnitude of approximately 31 kN. Perpendicular to the mechanical load, the bolt load undergoes significant changes, especially at the edges, reaching a maximum of about 20 kN, which warrants attention. The bolt-load distribution of the structure with the increase in mechanical load at −54 °C tends to be consistent with that at room temperature. Full article
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29 pages, 365 KiB  
Article
Migrant Organisations on the Rise after 2015/2016? Between “Projectitis” and the Formation of New Structures and Types
by Kirsten Hoesch
Soc. Sci. 2024, 13(4), 223; https://doi.org/10.3390/socsci13040223 (registering DOI) - 18 Apr 2024
Abstract
The paper departs from the observation that the role of migrant organisations (MOs) in Germany has changed significantly since the strong influx of refugees in 2015/16. As a result of this specific historical situation, it seems that MOs were able to strengthen their [...] Read more.
The paper departs from the observation that the role of migrant organisations (MOs) in Germany has changed significantly since the strong influx of refugees in 2015/16. As a result of this specific historical situation, it seems that MOs were able to strengthen their position as important civil society and integration policy actors and reduce reservations about them. While there has been growing attention on MOs’ civic and social contributions, both in public and academic debates, this article also highlights the risks of failure and inflated expectations and the often rather fragile structures of MOs. Thus, the article aims to broaden the view on MOs by focusing on aspects which have been neglected in the course of recent public and academic interest and rather optimistic perceptions. The methodological approach is one of “embedded research”: the author has been a senior executive of one of the largest German MOs for six years and, at the same time, a migration researcher for many years. From this special inside/outside view, an ambivalent picture emerges: despite a significantly greater appreciation of the achievements of MOs and much verbal recognition, there is a clear lack of the necessary material/structural support, jeopardising the sustainability and viability of many MOs. Full article
16 pages, 975 KiB  
Article
Dissecting Holistic Metabolic Acclimatization of Mucor circinelloides WJ11 Defective in Carotenoid Biosynthesis
by Fanyue Li, Roypim Thananusak, Nachon Raethong, Junhuan Yang, Mingyue Wei, Xingtang Zhao, Kobkul Laoteng, Yuanda Song and Wanwipa Vongsangnak
Biology 2024, 13(4), 276; https://doi.org/10.3390/biology13040276 (registering DOI) - 18 Apr 2024
Abstract
Mucor circinelloides WJ11 is a lipid-producing strain with industrial potential. A holistic approach using gene manipulation and bioprocessing development has improved lipid production and the strain’s economic viability. However, the systematic regulation of lipid accumulation and carotenoid biosynthesis in M. circinelloides remains unknown. [...] Read more.
Mucor circinelloides WJ11 is a lipid-producing strain with industrial potential. A holistic approach using gene manipulation and bioprocessing development has improved lipid production and the strain’s economic viability. However, the systematic regulation of lipid accumulation and carotenoid biosynthesis in M. circinelloides remains unknown. To dissect the metabolic mechanism underlying lipid and carotenoid biosynthesis, transcriptome analysis and reporter metabolites identification were implemented between the wild-type (WJ11) and ΔcarRP WJ11 strains of M. circinelloides. As a result, transcriptome analysis revealed 10,287 expressed genes, with 657 differentially expressed genes (DEGs) primarily involved in amino acid, carbohydrate, and energy metabolism. Integration with a genome-scale metabolic model (GSMM) identified reporter metabolites in the ΔcarRP WJ11 strain, highlighting metabolic pathways crucial for amino acid, energy, and nitrogen metabolism. Notably, the downregulation of genes associated with carotenoid biosynthesis and acetyl-CoA generation suggests a coordinated relationship between the carotenoid and fatty acid biosynthesis pathways. Despite disruptions in the carotenoid pathway, lipid production remains stagnant due to reduced acetyl-CoA availability, emphasizing the intricate metabolic interplay. These findings provide insights into the coordinated relationship between carotenoid and fatty acid biosynthesis in M. circinelloides that are valuable in applied research to design optimized strains for producing desired bioproducts through emerging technology. Full article
(This article belongs to the Section Bioinformatics)
17 pages, 818 KiB  
Review
Exploring Zika Virus Impact on Endothelial Permeability: Insights into Transcytosis Mechanisms and Vascular Leakage
by Dama Faniriantsoa Henrio Marcellin and Jufang Huang
Viruses 2024, 16(4), 629; https://doi.org/10.3390/v16040629 (registering DOI) - 18 Apr 2024
Abstract
Treating brain disease is challenging, and the Zika virus (ZIKV) presents a unique obstacle due to its neuroinvasive nature. In this review, we discuss the immunopathogenesis of ZIKV and explore how the virus interacts with the body’s immune responses and the role of [...] Read more.
Treating brain disease is challenging, and the Zika virus (ZIKV) presents a unique obstacle due to its neuroinvasive nature. In this review, we discuss the immunopathogenesis of ZIKV and explore how the virus interacts with the body’s immune responses and the role of the protein Mfsd2a in maintaining the integrity of the blood–brain barrier (BBB) during ZIKV neuroinvasion. ZIKV has emerged as a significant public health concern due to its association with severe neurological problems, including microcephaly and Gillain–Barré Syndrome (GBS). Understanding its journey through the brain—particularly its interaction with the placenta and BBB—is crucial. The placenta, which is designed to protect the fetus, becomes a pathway for ZIKV when infected. The BBB is composed of brain endothelial cells, acts as a second barrier, and protects the fetal brain. However, ZIKV finds ways to disrupt these barriers, leading to potential damage. This study explores the mechanisms by which ZIKV enters the CNS and highlights the role of transcytosis, which allows the virus to move through the cells without significantly disrupting the BBB. Although the exact mechanisms of transcytosis are unclear, research suggests that ZIKV may utilize this pathway. Full article
(This article belongs to the Section Human Virology and Viral Diseases)
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21 pages, 820 KiB  
Article
Possessing 21st-Century Skills and Building Sustainable Careers: Early-Career Social Sciences Graduates’ Perspectives
by Ayşegül Karaca-Atik, Marjan J. Gorgievski, Marieke Meeuwisse and Guus Smeets
Sustainability 2024, 16(8), 3409; https://doi.org/10.3390/su16083409 (registering DOI) - 18 Apr 2024
Abstract
In today’s complex labor market, social sciences graduates encounter various challenges and negative experiences in their current jobs and job transitions, which may threaten the sustainability of their careers. Possessing 21st-century skills is considered important in supporting their career sustainability. Employing a cross-sectional [...] Read more.
In today’s complex labor market, social sciences graduates encounter various challenges and negative experiences in their current jobs and job transitions, which may threaten the sustainability of their careers. Possessing 21st-century skills is considered important in supporting their career sustainability. Employing a cross-sectional survey design, this study investigated which 21st-century skills help social sciences graduates build a sustainable career after their graduation. The sample consisted of 129 early-career social sciences graduates. We utilized both a variable-centered (path analysis) and a person-centered (latent profile) approach to data analysis. The path-analysis results showed that collaboration, creativity, and problem solving, but not communication and critical thinking, related to career sustainability. The results also revealed a suppressor effect of problem solving on the positive relationships between creativity and health-related problems, suggesting that problem solving may prevent creative individuals from developing health-related issues. Furthermore, latent-profile analysis demonstrated two profiles: sustainable and non-sustainable careers. While both profiles exhibited similar productivity levels, individuals from the non-sustainable profile reported lower happiness and higher health problems. Partly corroborating the path-analysis results, graduates with sustainable careers differed in communication and collaboration skills. This study enhances the understanding of 21st-century skills’ role in career sustainability and validates the model of sustainable careers. Full article
(This article belongs to the Special Issue Occupational Psychology and Sustainable Career Development)
17 pages, 608 KiB  
Article
Anaerobic Digestion as a Possible Method of Managing Waste from Mushroom Production with Sewage Sludge as Co-Substrate
by Katarzyna Bernat, Thi Cam Tu Le, Dorota Kulikowska and Ram Thapa
Energies 2024, 17(8), 1938; https://doi.org/10.3390/en17081938 (registering DOI) - 18 Apr 2024
Abstract
The mushroom agroindustry generates a huge amount of waste from mushroom production (WMP). The composition of WMP is not standardized but differs mainly in terms of organic matter (OM) content and OM biodegradability. This makes WMP management, including anaerobic digestion (AD), a significant [...] Read more.
The mushroom agroindustry generates a huge amount of waste from mushroom production (WMP). The composition of WMP is not standardized but differs mainly in terms of organic matter (OM) content and OM biodegradability. This makes WMP management, including anaerobic digestion (AD), a significant challenge. A potential solution could be co-digestion of WMP with municipal sewage sludge (SS), especially SS generated in small rural wastewater treatment plants (WWTPs). Therefore, this study investigated mesophilic methane production (MP) from WMP, SS, and mixtures of SS and WMP at ratios of 70:30, 50:50, and 30:70 (w/w OM). Even though the maximum cumulative MP from WMP was relatively low (approx. 60 NL/kg OM), co-digesting WMP with SS increased both MP and the methane content of the biogas: with 30%, 50%, and 70% shares of SS, MP increased almost 2, 2.5, and 3.3 times, and the methane content increased to 61%, 62%, and 64%, respectively. As the SS content was increased, the kinetic coefficients of MP and OM removal decreased (from 0.211 to 0.146 d−1 and from 0.215 to 0.152 d−1), whereas the initial rate of MP and of OM removal increased (from 12.5 to 36.8 NL/(kg OM·d) and from 0.51 kg OM/(m3·d) to 0.59 kg OM/(m3·d), respectively). The effectiveness of OM removal (EOMrem) was lowest with WMP only, at 46.6%. When the SS content of the mixtures was increased to 30%, 50%, and 70%, EOMrem also increased to 55.3%, 60.1%, and 64.9%, respectively. The relationship between maximal MP and the overall OM removed was such that both increased simultaneously. The higher values of EOMrem and, consequently, the lower final contents of OM with more effective MP indicate that the organics were degraded more efficiently. These results suggest that co-digestion may be a profitable solution for simultaneously utilizing both of these waste products, increasing the efficiency of biogas production to such an extent that it would be profitable to conduct AD on mushroom farms. This is a flexible approach that allows varying proportions of WMP and SS to be used, depending on the availability of both substrates and the energy needs of the mushroom farm. However, it should be borne in mind that a higher share of WMP results in lower gas productivity. Full article
(This article belongs to the Special Issue Biomass and Bio-Energy—2nd Edition)
9 pages, 352 KiB  
Brief Report
Are Gamers Prone to eThrombosis during Long Gaming Sessions?
by Kasper B. Krarup, Henrik B. Krarup, Morten Mørk, Søren Lundbye-Christensen, Aase Handberg, Hien T. T. Nguyen, Inge S. Pedersen and Søren R. Kristensen
Life 2024, 14(4), 525; https://doi.org/10.3390/life14040525 (registering DOI) - 18 Apr 2024
Abstract
During the last two decades, several cases of venous thrombosis (VTE) after a prolonged period at a computer have been described, denominated as “eThrombosis”. Video gaming on a computer has become very popular and can be a social activity where several players gather [...] Read more.
During the last two decades, several cases of venous thrombosis (VTE) after a prolonged period at a computer have been described, denominated as “eThrombosis”. Video gaming on a computer has become very popular and can be a social activity where several players gather to play against each other or in a virtual environment for several days (“LAN (i.e., Local Area Network) parties”) where the participants are sedentary and consuming calorie-rich food items. The aim of this study was to investigate potential coagulation activation during a 42 h LAN party. Nine male gamers volunteered for the LAN party. Citrated blood was sampled before and every 6 h, and plasma was analyzed for thrombin generation, thrombin–antithrombin complexes (TAT), prothrombin fragment 1 + 2 (F1 + 2), and D-dimer. Thrombin generation increased slightly but not significantly during the LAN party, whereas the coagulation activation markers were unchanged. These results do not indicate that the coagulation system is activated significantly during 42 h of gaming with minimal physical activity. Although increased activity cannot be excluded, it does not directly indicate a risk of VTE in general. Full article
21 pages, 1348 KiB  
Review
Molecular Landscape and Therapeutic Strategies against Colorectal Cancer
by Aakash Patel and Pat Gulhati
Cancers 2024, 16(8), 1551; https://doi.org/10.3390/cancers16081551 (registering DOI) - 18 Apr 2024
Abstract
Colorectal cancer (CRC) is the second leading cause of cancer deaths worldwide. Although the overall incidence of CRC is decreasing, the incidence of young-onset CRC, characterized by a diagnosis of CRC before age 50, is increasing. Outcomes for CRC patients are improving, partly [...] Read more.
Colorectal cancer (CRC) is the second leading cause of cancer deaths worldwide. Although the overall incidence of CRC is decreasing, the incidence of young-onset CRC, characterized by a diagnosis of CRC before age 50, is increasing. Outcomes for CRC patients are improving, partly due to comprehensive molecular characterization of tumors and novel therapeutic strategies. Advances in genomic and transcriptomic analyses using blood- and tumor-tissue-based sequencing have facilitated identification of distinct tumor subtypes harboring unique biological characteristics and therapeutic vulnerabilities. These insights have led to the development and incorporation of targeted therapies and immunotherapy in CRC treatment. In this review, we discuss the molecular landscape and key oncogenes/tumor suppressors contributing to CRC tumorigenesis, metastasis, and therapeutic resistance. We also discuss personalized therapeutic strategies for subsets of CRC patients and provide an overview of evolving novel treatments being evaluated in clinical trials. Full article
(This article belongs to the Special Issue Targeted Therapy in Gastrointestinal Cancer)
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35 pages, 10002 KiB  
Article
Wildfire Scenarios for Assessing Risk of Cover Loss in a Megadiverse Zone within the Colombian Caribbean
by Ailin Cabrera, Camilo Ferro, Alejandro Casallas and Ellie Anne López-Barrera
Sustainability 2024, 16(8), 3410; https://doi.org/10.3390/su16083410 (registering DOI) - 18 Apr 2024
Abstract
Rising wildfire incidents in South America, potentially exacerbated by climate change, require an exploration of sustainable approaches for fire risk reduction. This study investigates wildfire-prone meteorological conditions and assesses the susceptibility in Colombia’s megadiverse northern region. Utilizing this knowledge, we apply a machine [...] Read more.
Rising wildfire incidents in South America, potentially exacerbated by climate change, require an exploration of sustainable approaches for fire risk reduction. This study investigates wildfire-prone meteorological conditions and assesses the susceptibility in Colombia’s megadiverse northern region. Utilizing this knowledge, we apply a machine learning model and the Monte Carlo approach to evaluate sustainability strategies for mitigating fire risk. The findings indicate that a substantial number of fires occur in the southern region, especially in the first two seasons of the year, and in the northeast in the last two seasons. Both are characterized by high temperatures, minimal precipitation, strong winds, and dry conditions. The developed model demonstrates significant predictive accuracy with the HIT, FAR, and POC of 87.9%, 28.3%, and 95.7%, respectively, providing insights into the probabilistic aspects of fire development. Various scenarios showed that a decrease in soil temperature reduces the risk mostly in lower altitudes and leaf skin reservoir content in the highest altitudes, as well as in the north region. Sustainability strategies, such as tree belts, agroforestry mosaics, and forest corridors emerge as crucial measures. The results underscore the importance of proactive measures in mitigating wildfire impact, offering actionable insights for crafting effective sustainability strategies amid escalating fire risks. Full article
(This article belongs to the Section Hazards and Sustainability)
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16 pages, 792 KiB  
Perspective
Incidence and Risk Factors of Perianal Pathology during Pregnancy and Postpartum Period: A Prospective Cohort Study
by Zivile Sabonyte-Balsaitiene, Tomas Poskus, Eugenijus Jasiunas, Diana Ramasauskaite and Grazina Drasutiene
J. Clin. Med. 2024, 13(8), 2371; https://doi.org/10.3390/jcm13082371 (registering DOI) - 18 Apr 2024
Abstract
Objective: We aimed to identify the incidence and risk factors of perianal pathology during pregnancy and the postpartum period. Methods: A prospective cohort study was conducted in three institutions in Lithuania. A total of 190 patients were examined and interviewed three times (<12, [...] Read more.
Objective: We aimed to identify the incidence and risk factors of perianal pathology during pregnancy and the postpartum period. Methods: A prospective cohort study was conducted in three institutions in Lithuania. A total of 190 patients were examined and interviewed three times (<12, 18–20 weeks of gestation, and during the first 2 months after delivery). They completed a questionnaire including demographic, obstetric, coloproctological, and birth data. Results: A total of 73 (34.59%) women developed hemorrhoidal disease after delivery, and 120 (56.87%) developed perianal pathology. Multivariate analysis identified a neonatal birth weight ≥3380 g (OR 4.22; 95% CI 1.83–9.71, p < 0.001) and consumption of eggs (OR 3.10; 95% CI 1.13–8.53, p = 0.028) or cereals (OR 2.87; 95% CI 1.32–6.25, p = 0.008) several times per week as significant risk factors for hemorrhoidal disease. Neonatal birth weight ≥3380 g (OR 3.95; 95% CI 1.47–10.59, p = 0.006), maternal BMI ≥ 21.48 (OR 3.58; 95% CI 1.51–8.47, p = 0.004), the duration of the second labor period ≥38 min (OR 2.81; 95% CI 1.09–7.23, p = 0.032), and consumption of flour products several times per week (OR 2.77; 95% CI 1.10–6.98, p = 0.030) were associated with a higher risk of perianal pathology. Daily consumption of fruits and vegetables (OR 0.35; 95% CI 0.15–0.81, p = 0.014) and less frequent consumption of eggs were protective factors (OR 0.18; 95% CI 0.06–0.56, p = 0.003). Conclusions: Perianal diseases, especially hemorrhoidal disease, are common during pregnancy and the postpartum period. A neonatal birth weight ≥ 3380 g, a maternal BMI of ≥21.48, duration of the second labor period of ≥38 min, and consumption of flour products and cereals several times a week are risk factors for developing these diseases. Full article
(This article belongs to the Special Issue Clinical Risks and Perinatal Outcomes in Pregnancy and Childbirth)
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19 pages, 601 KiB  
Article
Multilingual Hate Speech Detection: A Semi-Supervised Generative Adversarial Approach
by Khouloud Mnassri, Reza Farahbakhsh and Noel Crespi
Entropy 2024, 26(4), 344; https://doi.org/10.3390/e26040344 (registering DOI) - 18 Apr 2024
Abstract
Social media platforms have surpassed cultural and linguistic boundaries, thus enabling online communication worldwide. However, the expanded use of various languages has intensified the challenge of online detection of hate speech content. Despite the release of multiple Natural Language Processing (NLP) solutions implementing [...] Read more.
Social media platforms have surpassed cultural and linguistic boundaries, thus enabling online communication worldwide. However, the expanded use of various languages has intensified the challenge of online detection of hate speech content. Despite the release of multiple Natural Language Processing (NLP) solutions implementing cutting-edge machine learning techniques, the scarcity of data, especially labeled data, remains a considerable obstacle, which further requires the use of semisupervised approaches along with Generative Artificial Intelligence (Generative AI) techniques. This paper introduces an innovative approach, a multilingual semisupervised model combining Generative Adversarial Networks (GANs) and Pretrained Language Models (PLMs), more precisely mBERT and XLM-RoBERTa. Our approach proves its effectiveness in the detection of hate speech and offensive language in Indo-European languages (in English, German, and Hindi) when employing only 20% annotated data from the HASOC2019 dataset, thereby presenting significantly high performances in each of multilingual, zero-shot crosslingual, and monolingual training scenarios. Our study provides a robust mBERT-based semisupervised GAN model (SS-GAN-mBERT) that outperformed the XLM-RoBERTa-based model (SS-GAN-XLM) and reached an average F1 score boost of 9.23% and an accuracy increase of 5.75% over the baseline semisupervised mBERT model. Full article
12 pages, 897 KiB  
Article
High Sensitivity Hydrogen Sensor via the Coupling of Tamm Plasmon Polaritons and Defect Mode
by Feng Zhang, Weifeng Yin and Jianxia Zhang
Chemosensors 2024, 12(4), 67; https://doi.org/10.3390/chemosensors12040067 (registering DOI) - 18 Apr 2024
Abstract
Optical hydrogen sensors offer high sensitivity, high accuracy, and non-invasive sensing capabilities, making them promising devices in various fields, including the construction of hydrogen fuel cells, storage and transportation, and aerospace. However, to achieve better sensitivity and faster reaction times, such sensors are [...] Read more.
Optical hydrogen sensors offer high sensitivity, high accuracy, and non-invasive sensing capabilities, making them promising devices in various fields, including the construction of hydrogen fuel cells, storage and transportation, and aerospace. However, to achieve better sensitivity and faster reaction times, such sensors are often constructed as nano-arrays or nano-gratings, leading to increased manufacturing costs and complexity. In this study, we propose and demonstrate a highly sensitive hydrogen sensor based on a multilayer structure. The proposed structure consists of a Pd metal film and a photonic crystal with a defect layer, in which the photonic crystal is designed by an alternating arrangement of Ta2O5 and SiO2, and the material comprising the defect layer is SiO2. With a sensitivity of up to 16,020 at 670 nm, the proposed sensor relies on the coupling of Tamm plasmon polaritons and defect modes. The electric field distribution inside the structure is also provided in order to reveal its physical mechanism. Furthermore, we investigate the effects of the thickness of the defect layer and the angle of incident light on the sensor’s performance. The study results show that the sensor has good fault tolerance in either scenario. The findings of this study open up new possibilities for hydrogen sensor applications. Full article
(This article belongs to the Section Nanostructures for Chemical Sensing)
52 pages, 6842 KiB  
Review
Porous Inorganic Nanomaterials: Their Evolution towards Hierarchical Porous Nanostructures
by Anitta Jose, Tom Mathew, Nora Fernández-Navas and Christine Joy Querebillo
Micro 2024, 4(2), 229-280; https://doi.org/10.3390/micro4020016 (registering DOI) - 18 Apr 2024
Abstract
The advancement of both porous materials and nanomaterials has brought about porous nanomaterials. These new materials present advantages both due to their porosity and nano-size: small size apt for micro/nano device integration or in vivo transport, large surface area for guest/target molecule adsorption [...] Read more.
The advancement of both porous materials and nanomaterials has brought about porous nanomaterials. These new materials present advantages both due to their porosity and nano-size: small size apt for micro/nano device integration or in vivo transport, large surface area for guest/target molecule adsorption and interaction, porous channels providing accessibility to active/surface sites, and exposed reactive surface/active sites induced by uncoordinated bonds. These properties prove useful for the development of different porous composition types (metal oxides, silica, zeolites, amorphous oxides, nanoarrays, precious metals, non-precious metals, MOFs, carbon nanostructures, MXenes, and others) through different synthetic procedures—templating, colloidal synthesis, hydrothermal approach, sol-gel route, self-assembly, dealloying, galvanostatic replacement, and so—for different applications, such as catalysis (water-splitting, etc.), biosensing, energy storage (batteries, supercapacitors), actuators, SERS, and bio applications. Here, these are presented according to different material types showing the evolution of the structure design and development towards the formation of hierarchical porous structures, emphasizing that the formation of porous nanostructures came about out of the desire and need to form hierarchical porous nanostructures. Common trends observed across these different composition types include similar (aforementioned) applications and the use of porous nanomaterials as templates/precursors to create novel ones. Towards the end, a discussion on the link between technological advancements and the development of porous nanomaterials paves the way to present future perspectives on these nanomaterials and their hierarchical porous architectures. Together with a summary, these are given in the conclusion. Full article
(This article belongs to the Special Issue Advances in Micro- and Nanomaterials: Synthesis and Applications)
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28 pages, 6325 KiB  
Article
Analyzing Green Growth Efficiency in China and Investigating the Spatial Effects of Fiscal Decentralization: Case Study of Prefecture-Level Cities
by Yiming Li and Liru Bai
Sustainability 2024, 16(8), 3408; https://doi.org/10.3390/su16083408 (registering DOI) - 18 Apr 2024
Abstract
Due to inadequate resource availability and environmental contamination, the Chinese government has placed a high priority on ecological civilization in recent years. Emphasis has been placed on the environmentally friendly conversion of the economy and the sustainable progress of society. China has established [...] Read more.
Due to inadequate resource availability and environmental contamination, the Chinese government has placed a high priority on ecological civilization in recent years. Emphasis has been placed on the environmentally friendly conversion of the economy and the sustainable progress of society. China has established a fiscal decentralization system that divides financial responsibilities between the central and local governments. Due to their proximity advantage, local governments, as agents of the central government, can effectively deliver public services, optimize resource allocation, encourage innovation in green science and technology, and facilitate green growth in the region. However, local governments may exhibit myopic behaviors that impede the sustainable development of the region in their pursuit of regional growth ambitions. Therefore, this paper aims to investigate whether the institutional factor of fiscal decentralization promotes or inhibits the efficiency of green development in China. Using data from Chinese prefecture-level cities between 2010 and 2020, this paper presents the SBM-DDF model to measure the green growth efficiency (GGE) in cities. The study then analyzes the spatial impact of fiscal decentralization on GGE using a dynamic panel model and a dynamic SAR model. The empirical results show that China’s green development level has steadily increased in recent years, and GGE reflects climbing pressure and regional differences. Secondly, increasing the vertical fiscal decentralization of local governments promotes GGE growth, while increasing fiscal freedom hinders it. Additionally, fiscal decentralization in neighboring cities also affects local GGE, with spatial spillover effects. Finally, the impact of fiscal decentralization on GGE is spatio-temporally heterogeneous. This paper expands on the research regarding the factors that affect the efficiency of green growth in China, specifically focusing on institutional factors at a theoretical level. Additionally, this paper provides targeted policy recommendations based on the aforementioned findings. These recommendations hold great practical significance for China in improving its fiscal decentralization system and achieving sustainable economic development. Full article
(This article belongs to the Special Issue Advanced Studies in Economic Growth, Environment and Sustainability)
18 pages, 1191 KiB  
Article
The Role of Reduced Graphene Oxide in Enhancing the Mechanical and Thermal Properties of a Rubber Cover Joint
by Hongyu Zhang, Junxia Li and Wenrui Fan
Polymers 2024, 16(8), 1143; https://doi.org/10.3390/polym16081143 (registering DOI) - 18 Apr 2024
Abstract
The development of high-performance rubber composites has always been a research hotspot in the field of conveyor belt manufacturing. In this work, a rubber cover joint composite made of reduced graphene oxide (rGO) was prepared using latex mixing and mechanical blending methods, with [...] Read more.
The development of high-performance rubber composites has always been a research hotspot in the field of conveyor belt manufacturing. In this work, a rubber cover joint composite made of reduced graphene oxide (rGO) was prepared using latex mixing and mechanical blending methods, with a steel wire rope conveyor belt as the research object, and the influence of the rGO content on the properties of the rubber composite is discussed. The structure and morphology characterization of the rGO/NR rubber show that the addition of rGO does not change its crystal structure, and 1.2 phr rGO is uniformly dispersed throughout the rubber composite. As more rGO is added, the mechanical properties of the rGO rubber cover joint first improve and then worsen. With the addition of 1.2 phr, the cross-linking density increases by 80.6%, the tensile strength of the rubber composites increases by 49.7%, the elongation at break increases by 23.6%, and the adhesion strength increases by 12.4%. The tensile strength of the rGO rubber cover joint can still maintain 72.5% of its pre-thermal aging value. The wear resistance and thermal conductivity increase as more phr is added. When 3.0 phr is added, the wear resistance of the rubber composites increases by 32.9%, the thermal conductivity increases by 118.8%, and the temperature difference at the completion of vulcanization decreases from 4.5 °C to 1.8 °C. The results show that when 1.2 phr of rGO is added, the rubber conveyor belt joint obtains the best comprehensive performance. These enhanced comprehensive properties allow for the practical application of rGO nanomaterials to conveyor belt rubber. Full article
(This article belongs to the Section Polymer Composites and Nanocomposites)
12 pages, 1059 KiB  
Article
Comparison of the Effect of Two Different Handling Conditions at Slaughter in Saliva Analytes in Pigs
by María Botía, Damián Escribano, Alba Ortín-Bustillo, María J. López-Martínez, Pablo Fuentes, Francisco J. Jiménez-Caparrós, Juan L. Hernández-Gómez, Antonio Avellaneda, José J. Cerón, Camila P. Rubio, Asta Tvarijonaviciute, Silvia Martínez-Subiela, Marina López-Arjona and Fernando Tecles
Metabolites 2024, 14(4), 234; https://doi.org/10.3390/metabo14040234 (registering DOI) - 18 Apr 2024
Abstract
In this report, different handling conditions at slaughterhouse were studied to assess changes in salivary biomarkers. For this purpose, finishing pigs were divided into two groups, one in which handling was improved to minimize stress (Group A, n = 24, transported and stabled [...] Read more.
In this report, different handling conditions at slaughterhouse were studied to assess changes in salivary biomarkers. For this purpose, finishing pigs were divided into two groups, one in which handling was improved to minimize stress (Group A, n = 24, transported and stabled at the slaughterhouse at low density without mixing with unfamiliar animals throughout the whole process) and another one in which animals had a more stressful handling process (Group B, n = 24, transported and stabled at high density with unfamiliar animals). Saliva samples were taken the day before transport to the slaughterhouse at 8:00 a.m. (B0) and 12:00 a.m. (B4), and the day of slaughter just after unloading animals at the slaughterhouse at approximately 8:00 a.m. (S0) and after 4 h of lairage at approximately 12:00 a.m. (S4). Group B showed significantly higher cortisol, total esterase activity, oxytocin, adenosine deaminase and haptoglobin levels than the Group A at both S0 and S4 sampling times, and higher levels of calprotectin and creatine kinase at S4 sampling time. This report indicates that differences in the way in which the pigs are handled at the slaughterhouse can lead to changes in salivary biomarkers and opens the possibility of the use of biomarker at slaughter to monitor handling conditions. Full article
22 pages, 503 KiB  
Article
Research on Sustainable Economic Dynamics: Digital Technology Development and Relative Poverty of Urban Households
by Sensen Jin and Feng Deng
Sustainability 2024, 16(8), 3407; https://doi.org/10.3390/su16083407 (registering DOI) - 18 Apr 2024
Abstract
The digital application gap and relative poverty caused by the development of digital technology are both important factors affecting sustainable economic dynamics. This paper explores the impact of digital technology development on the relative poverty of urban households in China, using the China [...] Read more.
The digital application gap and relative poverty caused by the development of digital technology are both important factors affecting sustainable economic dynamics. This paper explores the impact of digital technology development on the relative poverty of urban households in China, using the China Household Tracking Survey CFPS2010–2018 and the word frequency crawling technology of Python software. The results indicate that failure to adapt to the demands of digital technology may result in a multidimensional digital technology application gap, leading to increased income inequality among urban households and a higher likelihood of relative poverty. In economically developed areas, households headed by individuals with low levels of education and high levels of family support should be particularly mindful of the phenomenon of digital poverty. This paper expands the research scope of relative poverty and deepens the understanding of the relationship between digital technology and economic development, which is beneficial for the government to accelerate the construction of internal and external support mechanisms and to effectively address the challenges posed by sustainable economic development. Full article
20 pages, 2603 KiB  
Article
The Synthesis and Characterization of Geopolymers Based on Metakaolin and on Automotive Glass Waste
by Ivana Perná, Martina Havelcová, Monika Šupová, Margit Žaloudková and Olga Bičáková
Appl. Sci. 2024, 14(8), 3439; https://doi.org/10.3390/app14083439 (registering DOI) - 18 Apr 2024
Abstract
The presented article studies a metakaolin-based geopolymer matrix for which two types of non-recyclable automotive glass waste (AGW) have been used as an alternative aggregate. Their composition and character, as well as their influence on the properties and structure of geopolymer composites (AGW-Gs), [...] Read more.
The presented article studies a metakaolin-based geopolymer matrix for which two types of non-recyclable automotive glass waste (AGW) have been used as an alternative aggregate. Their composition and character, as well as their influence on the properties and structure of geopolymer composites (AGW-Gs), have been investigated by means of X-ray fluorescence and X-ray diffraction analyses, scanning electron microscopy, Fourier transform infrared spectrometry and gas chromatography/mass spectrometry. Infrared analysis has proven that the use of AGW does not affect the formation of geopolymer bonds. GC/MS analysis has revealed the presence of triethylene glycol bis(2-ethylhexanoate) in AGW and geopolymers, whose concentration varied according to the size of the fractions used. Preliminary compressive-strength tests have shown the promising potential of AGW-Gs. From the presented results, based on the study of two types of automotive glass waste, it is possible to assume that automotive glass will generally behave in the same or a similar manner in metakaolin-based geopolymer matrices and can be considered as potential alternative aggregates. The result is promising for the current search for new sources of raw materials, for ensuring resource security, for the promotion of sustainability and innovation and for meeting the needs of the growing world population while reducing dependence on limited resources. Full article
16 pages, 9946 KiB  
Article
Thermal Energy Storage Using Phase Change Materials in High-Temperature Industrial Applications: Multi-Criteria Selection of the Adequate Material
by Luisa F. Cabeza, Franklin R. Martínez, Emiliano Borri, Svetlana Ushak and Cristina Prieto
Materials 2024, 17(8), 1878; https://doi.org/10.3390/ma17081878 (registering DOI) - 18 Apr 2024
Abstract
Thermal energy storage (TES) plays an important role in industrial applications with intermittent generation of thermal energy. In particular, the implementation of latent heat thermal energy storage (LHTES) technology in industrial thermal processes has shown promising results, significantly reducing sensible heat losses. However, [...] Read more.
Thermal energy storage (TES) plays an important role in industrial applications with intermittent generation of thermal energy. In particular, the implementation of latent heat thermal energy storage (LHTES) technology in industrial thermal processes has shown promising results, significantly reducing sensible heat losses. However, in order to implement this technology, a proper selection of materials is important. In this study, a new multi-criteria phase change material (PCM) selection methodology is presented, which considers relevant factors from an application and material handling point of view, such as hygroscopicity, metal compatibility (corrosion), level hazard, cost, and thermal and atmospheric stability. The methodology starts after setting up the system requirements where the PCM will be used, then a material screening is able to find all possible candidates that are listed with all available properties as listed before. Then, a color map is produced, with a qualitative assessment of material properties drawbacks, hazard level, melting enthalpy, and price. The experimentation starts with a preliminary set of tests on hygroscopicity and one-week corrosion test, which allows disregarding PCMs and selecting a short list of potential PCMs that would need further characterization before the final selection. Full article
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12 pages, 4440 KiB  
Article
MOF-Derived CeO2 Nanorod as a Separator Coating Enabling Enhanced Performance for Lithium–Sulfur Batteries
by Hao Xiao, Jian Qin, Haodong Wang, Xiaoxu Lai, Pei Shi, Chi Chen and Dan Sun
Molecules 2024, 29(8), 1852; https://doi.org/10.3390/molecules29081852 (registering DOI) - 18 Apr 2024
Abstract
The deployment of Li–S batteries in the commercial sector faces obstacles due to their low electrical conductivity, slow redox reactions, quick fading of capacity, and reduced coulombic efficiency. These issues stem from the “shuttle effect” associated with lithium polysulfides (LiPSs). In this work, [...] Read more.
The deployment of Li–S batteries in the commercial sector faces obstacles due to their low electrical conductivity, slow redox reactions, quick fading of capacity, and reduced coulombic efficiency. These issues stem from the “shuttle effect” associated with lithium polysulfides (LiPSs). In this work, a haystack-like CeO2 derived from a cerium-based metal-organic framework (Ce-MOF) is obtained for the modification of a polypropylene separator. The carbon framework and CeO2 coexist in this haystack-like structure and contribute to a synergistic effect on the restriction of LiPSs shuttling. The carbon network enhances electron transfer in the conversion of LiPSs, improving the rate performance of the battery. Moreover, CeO2 enhances the redox kinetics of LiPSs, effectively reducing the “shuttle effect” in Li–S batteries. The Li–S battery with the optimized CeO2 modified separator shows an initial discharge capacity of 870.7 mAh/g at 2 C, maintaining excellent capacity over 500 cycles. This research offers insights into designing functional separators to mitigate the “shuttle effect” in Li–S batteries. Full article
(This article belongs to the Special Issue Multifunctional Metal Oxides: Synthesis and Applications)
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13 pages, 2405 KiB  
Article
Importance of Soil Health for Coffea spp. Cultivation from a Cooperative Society in Puebla, Mexico
by Carol Meritxell Molina-Monteleón, Amparo Mauricio-Gutiérrez, Rosalía Castelán-Vega and José Victor Tamariz-Flores
Land 2024, 13(4), 541; https://doi.org/10.3390/land13040541 (registering DOI) - 18 Apr 2024
Abstract
The cultivation systems of Coffea spp. in a cooperative society in Puebla, Mexico, include Rustic, Traditional Polyculture, Commercial Polyculture, Unshaded Monoculture and Shaded Monoculture. In this work, the properties of the soil were analyzed through physical, chemical and biological analyses to determine its [...] Read more.
The cultivation systems of Coffea spp. in a cooperative society in Puebla, Mexico, include Rustic, Traditional Polyculture, Commercial Polyculture, Unshaded Monoculture and Shaded Monoculture. In this work, the properties of the soil were analyzed through physical, chemical and biological analyses to determine its nutritional status. Composite sample analyses were conducted to determine physical, chemical and microbiological parameters (fungi, actinomycetes, mesophilic bacteria, nitrifying and denitrifying bacteria). Leaf nutrients were determined. Rustic was the cropping system with the highest amount of K in the soil and nutrient assimilation in the leaf (N, P, K and Fe) (p = 0.001); in addition, it had high populations of mesophilic bacteria, fungi and actinomycetes and very low nitrification and denitrification rates. The principal component analyses (PCA) (>3.25%) indicated that actinomycetes and K in soil favor the assimilation of Fe, K and P. This Coffea Molina-Monteleón, C.M.; Mauricio-Gutiérrez, A.; Castelán-Vega, R.; Tamariz-Flores, J.V spp. cultivation system generated a lower impact on soil health than the rest of the systems and favored forest ecosystem conservation. Full article
(This article belongs to the Special Issue Soil Management for Soil Health)
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15 pages, 864 KiB  
Article
Vitamin D and Ceramide Metabolomic Profile in Acute Myocardial Infarction
by Melania Gaggini, Federica Marchi, Nataliya Pylypiv, Alessandra Parlanti, Simona Storti, Umberto Paradossi, Sergio Berti and Cristina Vassalle
Metabolites 2024, 14(4), 233; https://doi.org/10.3390/metabo14040233 (registering DOI) - 18 Apr 2024
Abstract
Sphingolipids (SLs) influence several cellular pathways, while vitamin D exerts many extraskeletal effects in addition to its traditional biological functions, including the modulation of calcium homeostasis and bone health. Moreover, Vitamin D and SLs affect the regulation of each others’ metabolism; hence, this [...] Read more.
Sphingolipids (SLs) influence several cellular pathways, while vitamin D exerts many extraskeletal effects in addition to its traditional biological functions, including the modulation of calcium homeostasis and bone health. Moreover, Vitamin D and SLs affect the regulation of each others’ metabolism; hence, this study aims to evaluate the relationship between the levels of 25(OH)D and ceramides in acute myocardial infarction (AMI). In particular, the blood abundance of eight ceramides and 25(OH)D was evaluated in 134 AMI patients (aged 68.4 ± 12.0 years, 72% males). A significant inverse correlation between 25(OH)D and both Cer(d18:1/16:0) and Cer(d18:1/18:0) was found; indeed, patients with severe hypovitaminosis D (<10 ng/mL) showed the highest levels of the two investigated ceramides. Moreover, diabetic/dyslipidemic patients with suboptimal levels of 25(OH)D (<30 ng/mL) had higher levels of both the ceramides when compared with the rest of the population. On the other hand, 25(OH)D remained an independent determinant for Cer(d18:1/16:0) (STD Coeff −0.18, t-Value −2, p ≤ 0.05) and Cer(d18:1/18:0) (−0.2, −2.2, p < 0.05). In light of these findings, the crosstalk between sphingolipids and vitamin D may unravel additional mechanisms by which these molecules can influence CV risk in AMI. Full article

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