bluuebunny/crossref_metadata_2025_split huggingface dataset:
Metal‐loaded slot antenna with flat gain and one‐sided radiation
Authors: Qiu Peiyi , Meng Jinghui , Yang Xiaoyu , Kanaya Haruichi 
Published: August 2024

AbstractA metal‐loaded double‐layer unidirectional radiation slot antenna with flat gain is proposed for millimeter‐wave (mm‐wave) operations. Our presented antenna is constituted of a slot antenna with metal vias, an inner floating metal, a metal line, and ground patch. With the help of inner metal excited by the coupling of the slot antenna, an additional resonance point around 26 GHz could be obtained and the antenna gain is enhanced. To verify the design, the antenna has been fabricated with the prepreg technology. The whole fabricated size is only 0.62 × 0.62λ0² with a thickness of 0.057λ0 (λ0 is the free‐space wavelength at 26 GHz). The measured impedance bandwidth is from 25.1 to 26.55 GHz. Moreover, the proposed antenna obtains a wide flat gain (5.78 ± 0.48 dBi) within the bandwidth and stable one‐sided radiation patterns. The above characteristics show that the proposed antenna is a competitive choice for mm‐wave systems.
Identification and functional validation of rare coding variants in genes linked to monogenic obesity
Authors: Köroğlu Çiğdem , Traurig Michael , Muller Yunhua L. , Day Samantha E. , Piaggi Paolo , Wiedrich Kim , Vazquez Laura , Hanson Robert L. , Van Hout Cristopher V. , Alkelai Anna , Shuldiner Alan R. , Bogardus Clifton , Baier Leslie J. 
Published: August 2024

AbstractObjectiveRare cases of monogenic obesity, which may respond to specific therapeutics, can remain undetected in populations in which polygenic obesity is prevalent. This study examined rare DNA variation in established monogenic obesity genes within a community using whole‐exome sequence data from 6803 longitudinally studied individuals.MethodsExome data across 15 monogenic obesity genes were analyzed for nonsynonymous variants observed in any child with a maximum BMI z score > 2 (N = 279) but not observed in a child with a maximum BMI z score ≤ 0 (n = 1542) or that occurred in adults in the top 5th percentile of BMI (n = 263) but not in adults below the median BMI (n = 2629). Variants were then functionally analyzed using luciferase assays.ResultsThe comparisons between cases of obesity and controls identified eight missense variants in six genes: DYRK1B, KSR2, MC4R, NTRK2, PCSK1, and SIM1. Among these, MC4R p.A303P and p.R165G were previously shown to impair MC4R function. Functional analyses of the remaining six variants suggest that KSR2 p.I402F and p.T193I and NTRK2 p.S249Y alter protein function.ConclusionsIn addition to MC4R, rare missense variants in KSR2 and NTRK2 may potentially explain the severe obesity observed for the carriers.
Patterns of Teprotumumab‐Induced Hearing Dysfunction: A Systematic Review
Authors: Wong Kevin , Arya Priya , Salmeron Yansy , Bigelow Douglas C. , Ruckenstein Michael J. , Banerjee Shubhasree , Tamhankar Madhura , Brant Jason A. , Hwa Tiffany P. 
Published: August 2024

AbstractObjectiveHearing loss has been reported after administration of the monoclonal antibody teprotumumab. The purpose of this study was to review available evidence regarding the patterns of teprotumumab‐related ototoxicity.Data SourcesPubMed, EMBASE, and Cochrane Library.Review MethodsA systematic review was performed using standardized methodology. Studies were included if they included subjects who were prescribed teprotumumab. Exclusion criteria included non‐English articles, abstracts, letters/commentaries, case reports, and reviews. Subjects without both pre‐ and posttreatment audiometric data were also excluded. Bias was assessed using the Mixed Methods Appraisal Tool.ResultsFrom an initial search of 76 articles, 7 studies reporting on 109 unique patients were included. Four studies were level 4 evidence, 1 study was level 3 evidence, and 2 studies were level 2 evidence. Mean age was 55 ± 14 years with a female predominance (64%). The most commonly reported symptoms were hearing loss (22%), followed by fullness (18%) and tinnitus (14%). In total, 41% of patients with available data met criteria for ototoxicity, all exhibiting shifts in the middle frequencies or higher. Fifteen (14%) patients underwent ultrahigh frequency audiometric testing and 8 (53%, 8/15) demonstrated shifts exclusively in this range.ConclusionOtotoxicity may occur in patients treated with teprotumumab. Hearing loss occurs primarily in higher frequencies, and routine hearing screening with ultrahigh frequency testing may be warranted. The true incidence of ototoxicity with teprotumumab remains unknown, and more data is needed to elucidate underlying mechanisms and develop strategies to minimize risks.
Enhancing physiotherapists' knowledge and perceptions of telerehabilitation: A before‐after educational intervention study
Authors: Bonet‐Collantes Milena , Niño‐Pinzón Diana Marcela , Chaustre‐Porras Angie Dayana , Salas‐Poloche Yuli Andrea , Angarita‐Fonseca Adriana 
Published: August 2024

AbstractBackground and purposeIn the evolving landscape of healthcare, telerehabilitation is emerging as a pivotal modality, especially in delivering services to vulnerable populations. With the increasing reliance on digital health solutions, there is a pressing need for physiotherapists to be adequately trained in telerehabilitation. This training is essential for them to adapt to new technologies and methodologies, ensuring effective and efficient patient care. The aim of this study was to evaluate the effect of a telerehabilitation educational intervention on physiotherapists' knowledge and perceptions in Bucaramanga and its metropolitan area.MethodsA group of 27 physiotherapists underwent an educational intervention focused on telerehabilitation. Before‐ and after‐intervention assessments were conducted to gauge their perceptions and knowledge.ResultsParticipants generally held a positive perception of telerehabilitation both before and after the intervention [Before Median (Md) and interquartile range (IQR): Md = 2.5 (IQR = 2.1–3); after: Md = 2.7 (IQR = 2.4–3.1), p = 0.256]. A significant increase in their knowledge after‐intervention was observed [Before: Md = 55.5 (IQR = 33.3–66.6)]; after: Md = 77.7 (IQR = 66.6–88.8), p = <0.001, emphasizing the potential benefits of targeted educational interventions.ConclusionsThe educational intervention significantly improved physiotherapists' knowledge of telerehabilitation, underscoring the importance of professional training in this domain. While perceptions remained consistently positive, the notable increase in knowledge suggests that such educational programs are crucial for enhancing the adoption and effective use of telerehabilitation in physiotherapy practice.
Dietary plants for oral cancer prevention and therapy: A review of preclinical and clinical studies
Authors: Bishayee Anupam , Penn Amanda , Bhandari Neha , Petrovich Riley , DeLiberto Lindsay K. , Burcher Jack T. , Barbalho Sandra Maria , Nagini Siddavaram 
Published: August 2024

AbstractOral cancer is a disease with high mortality and rising incidence worldwide. Although fragmentary literature on the anti‐oral cancer effects of plant products has been published, a comprehensive analysis is lacking. In this work, a critical and comprehensive evaluation of oral cancer preventative or therapeutic effects of dietary plants was conducted. An exhaustive analysis of available data supports that numerous dietary plants exert anticancer effects, including suppression of cell proliferation, viability, autophagy, angiogenesis, invasion, and metastasis while promoting cell cycle arrest and apoptosis. Plant extracts and products target several cellular mechanisms, such as the reversal of epithelial‐to‐mesenchymal transition and the promotion of oxidative stress and mitochondrial membrane dysfunction by modulation of various signaling pathways. These agents were also found to regulate cellular growth signaling pathways by action on extracellular signal‐regulated kinase and mitogen‐activated protein kinase, inflammation via modulation of cyclooxygenase (COX)‐1, COX‐2, and nuclear factor‐κB p65, and metastasis through influence of cadherins and matrix metalloproteinases. In vivo studies support these findings and demonstrate a decrease in tumor burden, incidence, and hyperplastic and dysplastic changes. Clinical studies also showed decreased oral cancer risk. However, high‐quality studies should be conducted to establish the clinical efficacy of these plants. Overall, our study supports the use of dietary plants, especially garlic, green tea, longan, peppermint, purple carrot, saffron, tomato, and turmeric, for oral cancer prevention and intervention. However, further research is required before clinical application of this strategy.
A neural network to retrieve cloud cover from all‐sky cameras: A case of study over Antarctica
Authors: González‐Fernández Daniel , Román Roberto , Antuña‐Sánchez Juan Carlos , Cachorro Victoria E. , Copes Gustavo , Herrero‐Anta Sara , Herrero del Barrio Celia , Barreto África , González Ramiro , Ramos Ramón , Martín Patricia , Mateos David , Toledano Carlos , Calle Abel , de Frutos Ángel 
Published: August 2024

AbstractWe present a new model based on a convolutional neural network (CNN) to predict daytime cloud cover (CC) from sky images captured by all‐sky cameras, which is called CNN‐CC. A total of 49,016 daytime sky images, recorded at different Spanish locations (Valladolid, La Palma, and Izaña) from two different all‐sky camera types, are manually classified into different CC (oktas) values by trained researchers. Subsequently, the images are randomly split into a training set and a test set to validate the model. The CC values predicted by the CNN‐CC model are compared with the observations made by trained people on the test set, which serve as reference. The predicted CC values closely match the reference values within 1 oktas in 99% of the cloud‐free and overcast cases. Moreover, this percentage is above 93% for the rest of partially cloudy cases. The mean bias error (MBE) and standard deviation (SD) of the differences between the predicted and reference CC values are calculated, resulting in  oktas and  oktas. The MBE and SD are also represented for different intervals of measured aerosol optical depth and Ångström exponent values, revealing that the performance of the CNN‐CC model does not depend on aerosol load or size. Once the model is validated, the CC obtained from a set of images captured every 5 min, from January 2018 to March 2022, at the Antarctic station of Marambio (Argentina) is compared against direct field observations of CC (not from images) taken at this location, which is not used in the training process. As a result, the model slightly underestimates the observations with an MBE of 0.3 oktas. The retrieved data are analyzed in detail. The monthly and annual CC values are calculated. Overcast conditions are the most frequent, accounting for 46.5% of all observations throughout the year, rising to 64.5% in January. The annual mean CC value at this location is 5.5 oktas, with a standard deviation of approximately 3.1 oktas. A similar analysis is conducted, separating data by hours, but no significant diurnal cycles are observed except for some isolated months.
A multilayer neural‐network‐based fault estimation and fault tolerant control scheme for uncertain system
Authors: Akhtar Zainab , Naqvi Syed Zilqurnain Abbas , Hamayun Mirza Tariq , Ijaz Salman 
Published: August 2024

AbstractThis work introduces a new actuator fault estimation approach coupled with a fault‐tolerant control (FTC) strategy for uncertain systems in an output feedback framework. The proposed method involves constructing a Multi‐Layer Neural Network (MLNN) observer‐based fault estimation unit to accurately predict system states and potential faults in the actuator channel. An online control allocation (CA) scheme is then developed, utilizing the derived estimates to actively reconfigure the virtual control signals among the healthy redundant actuators in the event of actuator malfunction. Furthermore, an adaptive neural network‐based output integral sliding mode control scheme is designed based on the virtual control. This integration enhances the overall system's robustness and significantly reduces the chattering effect. The stability analysis of the proposed fault estimations scheme is initially performed using MLNN structure, followed by a comprehensive closed‐loop stability analysis to establish the stability of the entire system. Finally, the effectiveness of the proposed method is validated on a nonlinear six‐degree‐of‐freedom model of multirotor unmanned aerial vehicle aircraft. Numerical simulations under different fault and failure scenarios validate the efficacy of the proposed method. The comparative analysis of the proposed scheme is conducted with the static output feedback control allocations and adaptive allocation strategy. This analysis focuses on evaluating performance using metrics such as root mean square error and mean square deviation, particularly in the presence of faults and failures. The results demonstrate the superior performance of the proposed scheme in fault/failure conditions.
Fixed‐time rotating consensus control of second‐order multi‐agent systems
Authors: Kou Liwei , Huang Yi , Zuo Guangyu , Jian Long , Dou Yinke 
Published: August 2024

AbstractThis article investigates the fixed‐time rotating consensus problem of second‐order multi‐agent systems in both the leaderless and leader‐following cases. Specifically, in the leaderless case, a distributed controller is developed to drive all agents to reach rotating consensus in fixed‐time. In the leader‐following case, a distributed fixed‐time observer is first proposed to estimate the position of a rotating leader. Then, a local fixed‐time output feedback controller without any velocity measurements is proposed to achieve the leader‐following motion. Furthermore, an integral sliding mode control technique is applied to handle the case where the multi‐agent system is subject to time varying external disturbances. Based on the bi‐limit homogeneity method and Lyapunov theory, we prove that all the agents reach the rotating consensus within a fixed time independent of initial conditions. Finally, simulations illustrate the effectiveness of the proposed controllers.
Cluster consensus for nonlinear multi‐agent systems restricted with input saturation by event triggered control
Authors: Huang Jun , Liu Mingquan , Xu Jing , Sun Yuan 
Published: August 2024

AbstractThis article studies the cluster consensus problem for the nonlinear multi‐agent systems subject to input saturation under the context of event triggered control. Taking ordinary consensus object as a special case, this article considers the problem of cluster consensus. The event triggered mechanism is designed and the Zeno phenomenon is ruled out. The sufficient conditions of control protocol and range estimation of domain of attraction are formulated by the linear matrix inequalities for the constraints of input saturation and nonlinear terms existed in the system dynamics. Finally, the proposed results are validated by one example in the background of spring damping system.
Tin Lodide Thin Films Growth via Plasma Enhanced Chemical Vapor Deposition and its Optimization Using V–I Probe Impedance Analyser for Optoelectronic Applications
Authors: Yadav Chandan , Kumar Sushil 
Published: August 2024

AbstractTin(ii) iodide (SnI2) faces significant challenges in photodetector applications, primarily due to its sensitivity to moisture and degradation over time. Achieving uniform, high‐quality films with low impurity and defect levels is also a challenge. Potential solutions include advanced deposition techniques to improve film quality and stability, surface passivation and encapsulation, doping and alloying. In this study, SnI2thin films have been deposited for the first time using plasma enhanced chemical vapour deposition (PECVD) technique to the best of our knowledge. Process parameters like deposition pressure and RF‐power have been optimised via non‐intrusive in‐situ V−I probe impedance analyser. SnI2thin films have been deposited on glass & transparent conducting oxide (TCO) and p‐Si wafer at various RF‐power to make SnI2/p‐Si heterojunction followed by metallization to make Ag/SnI2/p‐Si/Ag heterojunction photodetector. Characterization techniques like thin film thickness measurement, UV‐Vis‐NIR spectroscopy, Photoluminescence spectroscopy, glancing incidence x‐ray diffraction (GIXRD), SEM and I−V measurements were carried out to study its optical, structural and electronic properties. Fabricated devices, Ag/SnI2/p‐Si/Ag heterojunction photodiode exhibits best critical performance for the film deposited at 150 W having rectifying ratio of 6.9×104at 1.0 V and photo‐sensitivity of 1.6×104at 100 mW/cm2light intensity.
Sequential Synthesis of Alkenylated Quinazolines Through sp3 C−H Functionalization and Their Photophysical Properties
Authors: Suresh Sundararajan , Nawaz Khan Fazlur Rahman 
Published: August 2024

AbstractQuinazolines are biologically potent heterocyclic compounds; however, their synthesis poses high challenges. In this present study, we have developed an inexpensive cobalt metal‐catalyzed acceptorless dehydrogenative pathway for the sequential synthesis of alkenylated quinazolines from benzhydrol via dehydrogenation, cyclization, and subsequent dehydrogenative sp3 C−H functionalization. This transformation holds potential owing to its commercially available key starting materials, good functional tolerance, moderate reaction conditions, environmental friendliness, and applicability for gram‐scale synthesis. Furthermore, the synthetic utility of the synthesized derivatives has been explored through various reactions, including reduction, halogenation, methoxylation, Michael addition, and spiro cyclization. Additionally, the photophysical properties indicate that the nitrogen atom of the synthesized derivatives readily undergoes a reversible protonation, leading to significant changes in colour. This characteristic presents an opportunity for the creation of pH sensors with colourimetric capabilities.
A Sustainable Recycling Route from Spent Sulfuric Acid Catalysts to Vanadium Pentoxide Precursor for the Production of Low‐Cost Na3V2(PO4)3@C Na‐Ion Batteries
Authors: Elhoucine Elmaataouy , Hiba Nahi , Abdelwahed Chari , Mustapha Bouzzite , Jones Alami , Mouad Dahbi 
Published: August 2024

AbstractThe extraction of vanadium from spent industrial catalysts is a widely practiced process globally due to the large quantities of material available with appreciable vanadium content. However, some of these spent catalysts are unresponsive to established extraction methods because they have different properties. Therefore, separate studies are necessary to deal with specific cases. This work demonstrates how the leaching step can limit the recovery of vanadium to the solution before the coprecipitation step. The NH4Cl‐H2SO4synergetic system achieved a high vanadium leaching rate of up to 95 %, resulting in the preparation of high‐purity NH4VO3with 75.45 % V2O5content. This demonstrates the potential of the prepared V2O5as a precursor for vanadium materials used in sodium‐ion batteries, allowing for the adjustment of the valence of vanadium. The Na3V2(PO4)3@C particles exhibit a discharge capacity of 110 mAh g−1at a current density of 0.1 C and 90 mAh g−1at 1 C. The synergistic leaching system provides a sustainable method for the recovery and reuse of vanadium from spent vanadium catalysts. This contributes to recycling efforts and the development of sodium‐ion batteries.
Seed‐Assisted Reversible Dissolution/Deposition of MnO2 for Long‐Cyclic and Green Aqueous Zinc‐Ion Batteries
Authors: Qi Yifeng , Li Fengfeng , Sheng Hongwei , Zhang Haoshuo , Yuan Jiao , Ma Lingxiao , Bi Huasheng , Ma Yuqi , Li Wenquan , Lan Wei 
Published: August 2024

AbstractManganese oxide (MnO2) based aqueous zinc‐ion batteries (AZIBs) are considered to be a promising battery for grid‐scale energy storage. However, they usually suffer from the great challenge of capacity attenuation due to Mn dissolution and irreversible structural transformation. Herein, full use of the shortcomings is made to design high‐performance cathode‐free AZIBs. Manganese‐based Prussian blue analog (Mn‐PBA) is selected as a seed layer to provide a stable MnO2 electrodeposition surface. Thanks to the large specific surface area and manganophilic nature of Mn‐PBA, the deposition/dissolution kinetics between Mn2+ and MnO2 are significantly enhanced. Systematic studies revealed the mechanism of MnO2 deposition‐dissolution related to the reversible transformation of manganese oxide hydroxide and zinc hydroxide sulfate hydrate. Based on this, the developed cathode‐free AZIBs exhibit outstanding rate performance (with a specific capacity of 273.7 mAh g−1 at 1 A g−1) and extraordinary cycle stability (maintaining a specific capacity of 52.3 mAh g−1 after 50 000 cycles at 20 A g−1). Furthermore, the AZIBs with non‐toxic, biocompatible materials can be directly discarded after use, without causing pollution to the environment, which is expected to help achieve the sustainable development goals.
Progresses and Perspectives of Carbon‐Free Metal Compounds‐Modified Separators for High‐Performance Lithium‐Sulfur Batteries
Authors: Lu Yayi , Deng Nanping , Wang Hao , Zhang Fan , Wang Yilong , Jin Yongbing , Cheng Bowen , Kang Weimin 
Published: August 2024

AbstractLithium‐sulfur batteries (LSBs) have the advantages of high theoretical specific capacity, excellent energy density, abundant elemental sulfur reserves. However, the LSBs is mainly limited by shuttling of lithium polysulfides (LiPSs), slow reaction kinetics of sulfur cathode. For solving the above problems, by developing high‐performance battery separators, the reversible capacity, Coulombic efficiency (CE) and cycle life of LSBs can be effectively enhanced. Carbon‐free based metal compounds are expected to be highly efficient separator modifiers for a new generation of high‐performance LSBs by virtue of superior chemical adsorption capacity, strong catalytic properties and excellent lithophilicity to a certain extent. They can give play to the synergistic effect of their “adsorption‐catalysis” sites to accelerate the redox kinetics of LiPSs, and their good lithophilicity can accelerate the Li+ transport kinetics, thus showing more remarkable electrochemical performances. However, a comprehensive summary of carbon‐free metal compounds‐modified separators for LSBs is still lacking. Here, this review systematically summarizes the researching progresses and performance characteristics of carbon‐free‐based metal compounds modified materials for separators of LSBs, and summarizes the corresponding mechanisms of using carbon‐based separators to enhance the performance of LSBs. Finally, the review also looks forward to the prospects of LSBs using carbon‐free metal compounds separators.