bluuebunny/crossref_metadata_2025_split huggingface dataset:
Adaptive Control of Constrained Nonlinear Systems With Intermittent Faults: A Fixed‐Time Fault‐Tolerant Framework Based on Projection Operator
Authors: Wei Yongli , Gao Ming , Sheng Li , Ma Yuhan , Chen Zhongyu 
Published: December 2024

ABSTRACTThis article investigates the problem of adaptive fixed‐time fault‐tolerant control for nonlinear systems with time‐varying intermittent faults and asymmetric output constraints. For this purpose, a novel adaptive law based on the projection operator technique is developed to estimate time‐varying intermittent faults, which eliminates the problem that the estimated value increases continuously with the accumulation of fault times. Considering that the fault estimation time needs to be less than the minimum time interval of intermittent faults, the fixed‐time design methodology is introduced to ensure that the relationship between the above two can be quantitatively analyzed. Then, a novel adaptive fixed‐time fault‐tolerant control strategy is put forward for the closed‐loop system, in which a universal barrier function is adopted to remain the system output in the time‐varying asymmetric constraint condition invariably. The theoretical analysis indicates that the developed strategy can guarantee the boundedness of all signals in the closed‐loop system in a fixed‐time. Finally, two examples, one of which involves the rotary steerable drilling tool systems are provided to demonstrate the feasibility and validity of the put forward scheme.
Artificial Intelligence in Metamaterial Informatics for Sonic Frequency Mechanical Identification Tags
Authors: Saatchi Daniel , Lee Myung‐Joon , Pandit Tushar Prashant , Mahato Manmatha , Oh Il‐Kwon 
Published: December 2024

AbstractDesigning mechanical metamaterials to control wave propagation often requires extensive finite element analysis and discrete Fourier transform simulations before fabricating 3D printed structures and conducting experiments. Here, an alternative approach is presented to developing a metamaterial informatics framework by integrating dataset collection with artificial intelligence (AI), which can significantly accelerate the advancement of phononic wave chip technologies based on the triply periodic minimal surface (TPMS). Visualized data analysis is performed to evaluate the sensitivity of phononic band frequency numbers (BNF). Subsequently, various machine learning algorithms are compared for the prediction of sonic BNFs to create a unique identificable encoded mechanical identification tag (EMIT) interacting with sound waves. Then, for the mechanical decoding part with the help of acoustic analogy, a novel concept technology is developed that integrates 3D‐printed EMITs with a deep‐learning audio classifier for the ownership identification of instruments. Underwater application is discussed further for civil accident investigations, such as echolocating missing aircraft, divers, sunken ships, and containers with valuable cargo. These TPMS‐based EMITs represent the first‐generation passive sonic frequency identification (SFID) transponder‐tags, marking the advent of SFID transponder systems.
Synergistic Effect of Surface States and Deep Defects for Ultrahigh Gain Deep‐Ultraviolet Photodetector with Low‐Voltage Operation
Authors: Gu Keyun , Wu Kongping , Zhang Zilong , Ohsawa Takeo , Huang Jian , Koide Yasuo , Toda Masaya , Liao Meiyong 
Published: December 2024

AbstractTo achieve ultra‐high gain deep‐ultraviolet (DUV) detectors based on ultra‐wide bandgap semiconductors comparable with those of bulky photomultiplier tubes (PMTs), avalanche photodiodes have usually been adopted. However, the high‐operation voltage (∼100 V) is not compatible with monolithic integration. Herein, it is demonstrated that the ultra‐high gain DUV photodetectors (PDs) with low operation voltages (<5 V) can be achieved by using the synergistic effect of surface states and deep defects in a type‐Ib single‐crystal diamond (SCD) substrate. The overall photoresponse, such as the sensitivity, dark current, spectral selectivity, and response speed, of the diamond DUV‐PDs can be simply tailored by the surface hydrogen or oxygen termination of the SCD substrate. The DUV responsivity and external quantum efficiency are more than 2.5 × 104A/W and 1.4 × 107%, respectively, at 220 nm‐wavelength light, comparable with those of PMTs. The DUV/visible light rejection ratio (R220 nm/R400 nm) is as high as 6.7 × 105. The depletion of the 2D hole gas by deep nitrogen defect provides a low dark current and the filling of the ionized nitrogen upon DUV illumination induces a huge photocurrent. The synergistic effect of the surface states and the bulk deep defects opens the avenue for the development of DUV detectors compatible with integrated circuits.
Broad‐Spectrum Detoxification of Snake Venoms With Supramolecular Materials Integrated via Molecular Recognition and Coassembly
Authors: Chen Meng‐Meng , Tian Han‐Wen , Cheng Yuan‐Qiu , Yue Yu‐Xin , Pan Yu‐Chen , Guo Dong‐Sheng 
Published: December 2024

AbstractSnakebite is a medical emergency that often leads to high mortality and morbidity in tropical and subtropical regions. The diversity in venom composition between various types of snakes necessitates the use of different specific antivenom treatments, which presents clinical and financial challenges in the management of snakebites. Therefore, developing a broad‐spectrum antidote to neutralize complex and diverse snake venoms has assumed critical importance. Herein, a broad‐spectrum antidote is developed through molecular recognition and coassembly to neutralize four kinds of snake venom toxins, those are three‐finger toxin (3FTx), snake venom metalloproteinase (SVMP), phospholipase A2 (PLA2), and snake venom serine protease (SVSP), which have high abundance and toxicity. The coassembly of sulfonate‐modified amphiphilic calixarene (SCA) and amphiphilic cyclodextrin (CD) is employed to neutralize the toxicity of 3FTx, 1,2‐dodecanedithiol (DDT) and thioetheramide phosphorylcholine (TEAPC) are introduced through coassembly to neutralize toxicity of SVMP and PLA2, respectively, and the nafamostat (NT), which can be loaded through the host‐guest complexation, is employed to neutralize toxicity of SVSP. The broad‐spectrum antidote, NT@SCA/CD/DDT/TEAPC, effectively neutralizes key toxins from the most medically important cobra and vipers, significantly improving survival rates of poisoned mice. This study conceptually validated the feasibility of broad‐spectrum detoxification and also offers a conveniently integrated supramolecular strategy.
Sodium Butyrate‐Loaded Microspheres With Enhanced Bioavailability for Targeted Treatment of Intestinal Barrier Injury
Authors: Lv Yanwei , Jiang Mengni , Ouyang Yongliang , Zheng Xiaoyi , Zhang Liang , Yao Jinpeng , Hu Lianghao , Zhao Jiulong , Li Zhaoshen , Wang Shige 
Published: December 2024

AbstractIntestinal barrier dysfunction is related to diseases such as inflammatory bowel disease (IBD) and severe acute pancreatitis (SAP). Butyrate and its derivatives (e.g., sodium butyrate (SB)) can alleviate gut inflammatory responses. Nevertheless, these substances usually cannot fully exert protective effects due to low bioavailability. This research aimed to offer microspheres for treating intestinal barrier injury. Sodium alginate solution is prepared to dissolve SB, followed by mixing with chitosan (CS)‐protocatechuic aldehyde (PA)/calcium chloride solution. The required CS‐PA/calcium alginate/SB (CPC/SB) microspheres are formed in this manner. Subsequently, the therapeutic effects of CPC/SB microspheres on intestinal barrier injury through in vivo dextran sulfate sodium salt (DSS)‐induced IBD and sodium taurocholate (STC)‐induced SAP models is explored. Results: The CPC/SB microspheres exhibited excellent antioxidant properties. In vivo bioluminescence imaging experiment confirmed the microspheres effectively targeted the inflammatory gut in IBD. Further in vivo experimental results indicated the microspheres significantly repaired intestinal barrier damage, exerting protective effects in IBD and SAP. Additionally, 16S rDNA sequencing explained the microspheres can regulate the balance between harmful and beneficial bacteria (such as Alistipes, Odoribacter, and Rikenellaceae RC9). This study provides a possible synthetic strategy of microsphere carriers to serve as a potential therapeutic tool for intestinal barrier injury.
Softening, Conformable, and Stretchable Conductors for Implantable Bioelectronics Interfaces
Authors: Rocha‐Flores Pedro E. , Chitrakar Chandani , Rodriguez‐Lopez Ovidio , Ren Yao , Joshi‐Imre Alexandra , Parikh Ankit R. , Asan Ahmet S. , McIntosh James R. , Garcia‐Sandoval Aldo , Pancrazio Joseph J. , Ecker Melanie , Lu Hongbing , Carmel Jason B. , Voit Walter E. 
Published: December 2024

AbstractNeural implantable devices serve as electronic interfaces facilitating communication between the body and external electronic systems. These bioelectronic systems ideally possess stable electrical conductivity, flexibility, and stretchability to accommodate dynamic movements within the body. However, achieving both high electrical conductivity and mechanical compatibility remains a challenge. Effective electrical conductors tend to be rigid and stiff, leading to a substantial mechanical mismatch with bodily tissues. On the other hand, highly stretchable polymers, while mechanically compatible, often suffer from limited compatibility with lithography techniques and reduced electrical stability. Therefore, there exists a pressing need to develop electromechanically stable neural interfaces that enable precise communication with biological tissues. In this study, a polymer that is softening, flexible, conformal, and compatible with lithography to microfabricate perforated thin‐film architectures is utilized. These architectures offer stretchability and improved mechanical compatibility. Three distinct geometries are evaluated both mechanically and electrically under in vitro conditions that simulate physiological environments. Notably, the Peano structure demonstrates minimal changes in resistance, varying less than 1.5× even when subjected to ≈150% strain. Furthermore, devices exhibit a maximum mechanical elongation before fracture, reaching 220%. Finally, the application of multi‐electrode spinal cord leads employing titanium nitride for neural stimulation in rat models is demonstrated.
Revealing Activity of Symmetrical and Asymmetrical Ag2O‐MOx (M = Cu, Fe, Zn) Catalysts via DFT Calculations for Direct Propylene Epoxidation
Authors: Kumar Pankaj , Srivastava Vimal Chandra 
Published: December 2024

AbstractDirect propylene epoxidation (DPE) with molecular oxygen is an effective process of conversion of propylene into propylene oxide (PO), which is an essential intermediate compound for many petrochemical products such as propylene glycol, propylene carbonate, polyurethane foams, etc. The modification of Ag‐based catalysts which prevents overoxidation and improves catalytic activity for PO production is studied by simulating Ag2O and mixed metal oxides of Ag2O‐CuO (Ag2CuO2), Ag2O‐ZnO (Ag2ZnO2) and Ag2O‐Fe2O3 (Ag2Fe2O4) catalysts using density functional theory (DFT). Instantaneous adsorption of propylene was observed over Ag2ZnO2 and Ag2CuO2. DPE with oxygen via the Mars‐Van Krevelen mechanism (MVKM) was investigated considering propylene and oxygen as alternatively adsorbed species and molecular species. DPE with molecular oxygen and adsorbed propylene required 1.7 times more activation energy than DPE with molecular propylene and adsorbed oxygen. DPE with oxygen via the Lagmuir‐Hinshelwood mechanism (LHM) required 3–4 times more activation energy than MVKM for Ag2O and Ag2CuO2, whereas it is comparable for Ag2ZnO2. This showed that both mechanisms are followed for DPE over Ag2ZnO2. Ag2ZnO2 was found to be the optimum catalyst for DPE with instantaneous adsorption of propylene and instantaneous desorption of PO.
Techno‐Economic and Agricultural Best Practices for Increasing the Efficiency of Bioenergy Companies: Mixed Method for the Optimization of Land Use in Brazil and Australia
Authors: Carlucci Fábio Vogelaar , Salgado Junior Alexandre Pereira , Rebehy Perla Calil Pongeluppe Wadhy , Lemos Stella Vannucci , Novi Juliana Chiaretti , Saddow Stephen Edward 
Published: December 2024

ABSTRACTThis study proposes techno‐economic and agricultural best practices for increasing the efficiency of bioenergy companies. A mixed method was developed for increasing efficiency through the application of a two‐stage data envelopment analysis (DEA), followed by a multiple case study. The efficiency concept model was based on the capacity of a sugarcane grower to maximize the production of sugarcane per planted area, while minimizing the generation of mineral and vegetable impurities. A multiple linear regression analysis was performed to identify the variables that exerted a major influence on the performance of the bioenergy companies. The quantitative approach developed here pointed to the identification of six variables that served as the basis for the qualitative stage of this research project. Through qualitative analysis, five other relevant variables were identified: cultivation activities, sugarcane renewal, edaphoclimatic factors, sugarcane genetic variety, and irrigation systems. Based on the identified variables, multiple case studies were conducted in Brazil and Australia to identify best practices that should yield superior results in terms of techno‐economic and agricultural efficiency. One hundred best practices were identified and grouped according to the stages of the sugarcane production process and each category of technology, agricultural, and management practices. Most best practices were related to two specific stages of the sugarcane production process: (i) crop development and (ii) harvesting. Although Australia presented a greater concentration of best technology and agricultural practices, Brazil presented a greater concentration of best management practices, highlighting the potential and characteristics of each producing region. Thus, the results provide fundamental information for managers to make decisions and prioritize key factors that contribute most significantly to increasing the agricultural productivity of planted areas. Finally, as a practical contribution, a free online platform was developed for self‐assessment of adherence to best practices by growers and an implementation methodology to increase efficiency in sugarcane production.
The Mediating Role of Circular Economy in the Relationship Between Industry 4.0 and Sustainable Performance in the Manufacturing Industry
Authors: Cuevas‐Pichardo Lucero Jazmín , Maldonado‐Guzmán Gonzalo , Gómez‐Guillamón Antonio Duréndez , Garza‐Reyes Jose Arturo 
Published: December 2024

ABSTRACTStrong social pressure coupled with a tightening of environmental policies is forcing manufacturing firms to implement improvements in their production processes to reduce industrial waste and their negative impacts on the environment. To achieve this goal, manufacturing firms are increasingly adopting and applying Industry 4.0 (I4.0) and circular economy (CE) practices. However, the literature indicates that the implementation of I4.0 and CE does not always lead to a substantial improvement in the sustainable performance (SP) of manufacturing firms. Hence, this research analyzes how the concurrent adoption of I4.0 and CE impacts the SP of manufacturing firms within the context of Mexico. A research model was developed and validated with a sample of 338 manufacturing companies and by using PLS‐SEM for its analysis and measured I4.0 with 8 items (e.g., systems that integrate the physical world with virtual computational space and interconnecting of small computing devices embedded in products and objects to the internet, enabling the ability to receive and send data), CE with eight items (e.g., there is an environmental commitment by senior management, and there is support for environmental management by midlevel managers) and SP with seven items (e.g., the company's activities enable the transition to a low‐carbon economy, and the company's activities protect and/or restore the environment by focusing on environmental quality aspects and improving resource efficiency) in a research model that proposes four hypotheses that relate the analyzed constructs. The findings reveal that the SP of manufacturing firms increases substantially with the implementation of both Industry 4.0 and CE. Additionally, the results show that the CE plays a mediating role in the relationship between Industry 4.0 and SP. This study theoretically contributes by providing further empirical evidence that demonstrates the connection between I4.0 and CE as well as the mediating effect that CE exerts on the relationship between I4.0 and SP in manufacturing firms. From a practical standpoint, this study contributes by providing manufacturing companies with a better understanding of these relationships, which will help them formulate more effective policies and strategies to support the improvement of their environmental sustainability performance.
Effects of Local and Systemic Metronidazole as Adjunctive Treatment in Chronic Periodontitis Patients
Authors: Mehravani Maryam , Houshyar Ehsan , Jamalnia Sheida , Gharaaghaji Rasool 
Published: December 2024

ABSTRACTObjectivesThis study aimed to compare the effects of local and systemic metronidazole in patients with chronic periodontitis.Materials and MethodsIn this randomized clinical study, 30 patients (3 teeth per patient) were treated in three groups: scaling and root planing (SRP) treatment alone, metronidazole tablet as adjunctive treatment, and metronidazole gel as adjunctive treatment. BOP (bleeding on probing), PPD (pocket probing depth), and CAL (clinical attachment level) data were collected at the beginning and 3 months later. Collected data were tested by Wilcoxon and Kruskal–Wallis tests.ResultsBOP, CAL, and PPD levels were significantly different at the beginning of treatment and after 3 months, and this was true for all treatments. BOP, CAL, and PPD levels did not differ significantly between the three groups after the treatment (p > 0.05).ConclusionThe effectiveness of these methods was all equal and SRP is still considered as the gold standard in the treatment of periodontal diseases. Further studies are needed to confirm the findings. Chronic periodontitis is a progressive disease that can cause tooth loss. The accepted treatment is SRP. Antibiotics used systemically can penetrate the depth of the periodontal pockets but have several side effects. Hence, using a less complicated medicinal form as a topical gel as adjunctive therapy in treating chronic periodontitis can be more effective.Trial Registration: Iranian clinical trial https://en.irct.ir/: IRCT20210408050898N1
The Relationship Between Campus Bullying and Anxiety in Chinese Students With or Without Developmental Dyslexia: The Moderating Role of Self‐Confidence
Authors: Zhang Shudong , Ming Xiuping , Zhang Mingxia , Zeng Danying , Zhou Xinyi , Zhang Xianbing 
Published: December 2024

ABSTRACTThere is great value and significance to pay attention to the mental health status of children, especially those with special needs. This study examined the effects of self‐confidence and campus bullying on anxiety in students, both with and without dyslexia. A questionnaire survey was conducted among 92 students in grades 3–5, half of whom had developmental dyslexia (DD). The results showed a significant positive moderating effect of self‐confidence on the relationship between campus bullying and anxiety in students with DD. Specifically, the effect of campus bullying on anxiety was more pronounced in DD students with higher levels of self‐confidence than in those with lower levels. For typically developing (TD) students, this moderating effect was not significant. Further analysis showed no significant differences in this moderating effect between DD and TD students. These findings highlight the need for educators and parents to closely monitor and address campus bullying and anxiety issues in students, especially in DD students with a high level of self‐confidence and to implement timely interventions.
Mitral valve transcatheter edge‐to‐edge repair in the elderly—A safe and effective therapy
Authors: Felbel Dominik , Paukovitsch Michael , Gröger Matthias , Markovic Sinisa , Schneider Leonhard , Rottbauer Wolfgang , Keßler Mirjam 
Published: December 2024

AbstractAimsPrevalence of mitral regurgitation (MR) and comorbidity burden rise with age. Mitral valve transcatheter edge‐to‐edge repair (M‐TEER) is increasingly performed in elderly patients, but only limited data are available for this specific subgroup. In this study, outcomes of octogenarians and nonagenarians undergoing M‐TEER were analysed using a large real‐world dataset.MethodsThis retrospective study included consecutive patients undergoing M‐TEER at the Ulm University Heart Center between January 2010 and December 2021. The cohort was divided into an elderly group and a younger group based on the cohorts' median age. Group differences regarding 1 and 3 year mortality and heart failure hospitalization rates were assessed using Kaplan–Meier survival analysis and Cox proportional hazard models.ResultsA total of 1118 patients [median age 79 (inter‐quartile range 74–83) years; 42% female] were included and divided into 513 elderly (≥80 years) and 605 younger (<80 years) patients. Primary MR was more frequent in the elderly group (56% vs. 27%, P < 0.001). Pre‐procedural and post‐procedural MR grades were comparable between groups (pre‐procedural MR grade 4: 69% in the elderly group vs. 71% in the younger group, P = 0.67; post‐procedural MR grade 1: 60% in the elderly group vs. 58% in the younger group, P = 0.77) as well as in‐hospital mortality rates (0.2% vs. 0.3%, P = 0.66). Three‐year heart failure hospitalization rates did not differ significantly between both groups (30.7% in the older age cohort vs. 36.0% in the younger cohort, P = 0.191). While 1 year all‐cause mortality rates were comparable (18% vs. 16.4%, P = 0.577), 3 year all‐cause mortality was significantly higher in the elderly [43.1% vs. 33.0%; hazard ratio (HR) 1.29 (95% confidence interval 1.02–1.65), P = 0.035]. Pre‐procedural N‐terminal pro‐brain natriuretic peptide (NT‐proBNP) ≥3402 pg/mL [HR 2.29 (95% CI 1.34–3.90), P = 0.002], pre‐interventional MR grade [HR 1.79 (95% CI 1.01–3.17), P = 0.045] and European System for Cardiac Operative Risk Evaluation (EuroSCORE) II [HR 1.06 (95% CI 1.03–1.08), P < 0.001] were identified as independent predictors of 3 year mortality in the elderly.ConclusionsM‐TEER displays a safe and effective treatment option for elderly patients with symptomatic MR, offering symptom relief and comparable 1 year outcomes to younger patients. Elderly patients with elevated EuroSCORE II and advanced heart failure might benefit from additional care to further reduce 3 year mortality.