bluuebunny/crossref_metadata_2025_split huggingface dataset:
Globally exponentially mean‐square stabilization on disturbed networked switched systems using optimized event‐triggered scheme
Authors: Zhao Xinyu , Gao XianQiang , Chen Hao , Zhang Zhenzhen , Zhong Shouming , Shen Lili 
Published: October 2024

AbstractThis article is concerned with the globally exponentially mean‐square stabilization problem for uncertain disturbed networked switched systems (NSSs) subject to mixed network attacks and multiple asynchronous switching by exploring an optimized event‐triggered scheme. First, we consider a new challenge of multiple asynchronous switching stemmed from the varying switching delays within the event‐triggered scheme and controller. Second, assume that the data transmission network is subject to attacks consisting of deception attacks and aperiodic DoS attacks. Third, an optimized resilient dynamic event‐triggered scheme (ORD‐ETS) with switching behavior and external noises is proposed to intelligently reduce the inessential released data. For further improving the system performance, the updated ORD‐ETS (UORD‐ETS) is designed by introducing some fixed signals‐released points. Then, based on the mode‐dependent multiple Lyapunov functionals, integral inequality, incorporated switching signal technique and proposed asynchronous analysis method, some criteria are attained to ensure the globally exponentially mean‐square stable of the uncertain disturbed NSSs with a weighted performance. Further, the co‐design of the desired controller and the event‐triggered scheme is achieved. Ultimately, a numerical simulation with comparative analysis and a practical simulation are conducted to substantiate the validity of the obtained results.
Theranostic potential of miRNAs in oral cancer: An emerging approach for precision oncology
Authors: Biju Tina Sara , Veeraraghavan Vishnu Priya , Francis Arul Prakash 
Published: October 2024

AbstractMicroRNAs (miRNAs) have emerged as pivotal regulators in the pathogenesis of oral cancer, offering promising diagnostic and therapeutic opportunities in precision oncology. Dysregulated miRNA expression profiles are reliable biomarkers for oral cancer diagnosis and prognosis. Specific miRNAs, including miR‐21, miR‐31, miR‐375, miR‐let‐7a, miR‐125a, and miR‐200c, show altered expression patterns linked to oral cancer diagnosis, staging, and prognosis. Furthermore, these differentially expressed miRNAs can be detected in readily available biofluids such as saliva and plasma, improving their utility as non‐invasive diagnostic tools. Aberrant miRNA expression contributes to crucial oncogenic pathways in oral cancer progression, metastasis, and drug resistance. Using miRNA mimics or anti‐miRNAs to manipulate miRNA expression provides a mechanism for influencing downstream target genes and sensitizing cancer cells to conventional chemotherapy or targeted therapies. Preclinical studies have demonstrated the efficiency of miRNA‐based therapeutics in suppressing the development of oral cancer cells and triggering apoptosis. Furthermore, miRNAs have been linked to medication resistance, opening up new options for improving therapy response in patients with oral cancer. Further research and clinical validation are warranted to fully exploit the theranostic potential of miRNAs in oral cancer management and advance precision oncology.
To make or buy commercialization: A synthetic control approach
Authors: Coupet Jason 
Published: October 2024

AbstractMany public service organizations engage in commercialization, or market‐oriented strategies designed to generate non‐public revenue for the organization. Managers and policymakers sometimes choose to “buy” these commercialization strategies by setting up separate organizations, ostensibly to avoid inefficiencies associated with coordinating market activity within an organization designed for public service. Using a synthetic control approach, this study measures the effect on efficiency of a commercialization strategy in the tech transfer domain by leveraging the spin‐off of a large public tech transfer enterprise. I find that the spin‐off decreased revenue and licensing activity, and I find no meaningful effect on contract costs. My findings suggest that government entities in pursuit of revenue and efficiency gains should not consider “buying” commercialization strategies a magic bullet for efficiency gains.
Coupled chemo‐electro‐mechanical model for galvanic corrosion in clinched components
Authors: Harzheim Sven , Chen Chin , Hofmann Martin , Wallmersperger Thomas 
Published: October 2024

AbstractMechanical clinching is a frequently used joining method for technical components. These joints are usually weak spots. Here, corrosion and fatigue are decisive influencing factors for the assessment of the service life of such joints. Corrosion generally leads to material deterioration and thus to premature failure of the joints. Under certain circumstances, however, corrosion can lead to an increased fatigue life. While this effect has not yet been fully understood, the present work provides a possible explanation and a modeling approach to predict the fatigue life of precorroded clinched joints. The increased fatigue life is observed when the clinched components are briefly (up to 3 weeks) exposed to a salt spray environment. During this time, a small layer of corrosion products protrudes from the metal surface and fills the gaps between the joined sheets. Due to the increased contact area, the mechanical stress in the joint decreases, resulting in an improved fatigue performance. Although there are a variety of corrosion phenomena, for example, pitting, intergranular, and transgranular corrosion as well as galvanic corrosion, experimental studies indicate that galvanic corrosion is the main contributor of this effect. In the present work, a coupled electro‐chemo‐mechanical corrosion model is presented and applied to two test cases. Case I: corrosion products growth, and Case II: corrosion products growth and mechanical loading.
A deep learning approach to calculate elementary effects of morris sensitivity analysis
Authors: Raj Rohit , Tismer Alexander , Gaisser Lukas , Riedelbauch Stefan 
Published: October 2024

AbstractThe shape optimization of the multicomponent hydraulic turbomachinery is complex and computationally expensive due to the high number of computational fluid dynamics simulations. It is essential to identify the most influential parameters for which sensitivity analysis is needed to reduce the number of simulations. Morris sensitivity analysis provides a cost‐effective alternative for global sensitivity analysis that screens the essential parameters, requiring only a few computations to identify the most influential parameters from many parameters. This method is based on the elementary effects (EEs), which calculates the derivatives using the finite difference method. A deep learning (DL) approach is proposed to estimate the Morris method's EE. Two DL methods are proposed: the first utilizes the backpropagation of deep neural networks to calculate the partial derivatives of outputs to inputs; the second method relies on an artificial neural network‐based surrogate model which is trained using the optimization run dataset of hydraulic machinery with 30 parameters. The experimental results showed that the surrogate model trained with at least 7000 samples computes similar EEs as the classical Morris method with 310 samples. However, the backpropagation approach on Morris samples was observed to be less effective compared to a surrogate modeling approach.
Enhanced Dielectric, Thermal, Energy Storage, Quality Factor, Impedance, and Conductivity Properties of Novel PVDF/PAN/ZrO2 Polymer Nanocomposites for Flexible Electronics Applications
Authors: Vilvanatha Prabu A. , Vijayaraghavan G. V. , Basheer Ahamed M. , Suganya R. 
Published: October 2024

ABSTRACTIn this study, novel polymer nanocomposite films based on polyvinylidene fluoride/polyacrylonitrile/zirconium dioxide (PVDF/PAN/ZrO2) were prepared using a solution casting technique. The structural modifications and morphological properties were analyzed by x‐ray diffraction (XRD) and high resolution scanning electron microscopy (HRSEM). The obtained results verified the filler‐polymer interactions and uniform dispersion of the ZrO2 filler in the host polymers (PVDF and PAN). Thermal stability of up to 46% leftover residue for 30% ZrO2 nano‐filler loading in the blend polymer nanocomposite was analyzed by thermogravimetric analysis (TGA). The dielectric properties such as dielectric constant and dielectric loss values and impedance, Q‐factor, and AC conductivity were analyzed using an impedance analyzer. The decrement in impedance with increasing nano‐filler content with improved dielectric, thermal, Q‐factor, energy density and conductivity properties signifies the prepared novel PVDF/PAN/ZrO2 polymer nanocomposite as an effective material for flexible electronics applications.
Li–Fraumeni‐associated osteosarcomas: The French experience
Authors: Saucier Emilie , Bougeard Gaëlle , Gomez‐Mascard Anne , Schramm Catherine , Abbas Rachid , Berlanga Pablo , Briandet Claire , Castex Marie‐Pierre , Corradini Nadège , Coze Carole , Guerrini‐Rousseau Léa , Guinebretière Jean‐Marc , Khneisser Pierre , Lervat Cyril , Mansuy Ludovic , Marec‐Berard Perrine , Marie‐Cardine Aude , Mascard Eric , Saumet Laure , Tabone Marie‐Dominique , Winter Sarah , Frebourg Thierry , Gaspar Nathalie , Brugieres Laurence 
Published: October 2024

AbstractPurposeDescribe clinical characteristics and outcome of Li–Fraumeni syndrome (LFS)‐associated osteosarcomas.MethodsTP53 germline pathogenic/likely pathogenic variant carriers diagnosed with osteosarcoma in France between 1980 and 2019 were identified via the French Li–Fraumeni database at Rouen University Hospital. Sixty‐five osteosarcomas in 52 patients with available clinical and histological data were included. The main clinical characteristics were compared with data from National Cancer Institute's SEER (Surveillance, Epidemiology, and End Results) for patients of the same age group.ResultsMedian age at first osteosarcoma diagnosis was 13.7 years (range: 5.9–36.7). Compared to unselected osteosarcomas, LFS‐associated osteosarcomas occurred more frequently in patients less than 10 years of age (23% vs. 9%), and when compared with osteosarcomas in patients less than 25 years were characterized by an excess of axial (16% vs. 10%) and jaw sites (15% vs. 3%) and histology with predominant chondroblastic component and periosteal subtypes (17% vs. 1%). Metastases incidence (25%) was as expected in osteosarcomas. After the first osteosarcoma treatment, the rate of good histologic response (62%) and the 5‐year progression‐free survival (55%, 95% confidence interval [CI]: 42.6−71.1) were as expected in unselected series of osteosarcomas, whereas the 5‐year event‐free survival was 36.5% [95% CI: 25.3−52.7] due to the high incidence of second malignancies reaching a 10‐year cumulative risk of 43.4% [95% CI: 28.5−57.5].ConclusionIn osteosarcoma, young age at diagnosis, axial and jaw sites, histology with periosteal or chondroblastic subtype, and synchronous multifocal tumors should prompt suspicion of a germline TP53 mutation. Standard treatments are effective, but multiple malignancies impair prognosis. Early recognition of these patients is crucial for tailored therapy and follow‐up.
Study on recycled carbon fiber obtained by thermal activated oxide semiconductor and mechanical properties of its reinforced polymer composites
Authors: Cheng Huanbo , Tang Mingxi , Guo Lijun , Qian Zhengchun , Wang Qingze , Zhai He 
Published: October 2024

AbstractConsidering the types of carbon fiber reinforced polymer (CFRP) waste and the length of recycled carbon fiber (rCF), it is still a challenge to obtain high‐performance rCF and realize its high‐value reuse. In this paper, rCF was obtained by the thermal activated oxide semiconductor, and the effects of temperature and time on the resin decomposition rate of CFRP with different resin systems were analyzed. Three remanufacturing processes, namely wet fiber alignment (WFA), direct ink writing (DIW) and fused deposition modeling (FDM), were used to remanufacture rCF in millimeter and micron scale into recycled carbon fiber reinforced polymer (rCFRP) and the effects of rCF content on the mechanical properties of rCFRP were studied. The results showed that the optimal recycling parameter for EP‐EDA is 520°C, 45 min, and for EP‐MeTHPA and phenolic resin, the optimal recycling parameter is 520°C, 35 min. With the increase of rCF content, the tensile strength and modulus of WFA, DIW and FDM samples all increased to varying degrees. When the rCF content is 15 wt%, the tensile strength of WFA, DIW and FDM samples is increased by 355.6%, 68.4%, and 34.5%, respectively, compared with the corresponding pure resin samples. The mechanical properties of WFA, DIW and FDM samples are greatly different due to the rCF content, rCF length, interface bonding and alignment of rCF. This paper emphasizes the important effects of remanufacturing process, material composition and rCF content on the properties of rCFRP, and provides multiple ways for high‐value reuse of rCF.Highlights
rCF obtained by thermal activated oxide semiconductor.
Resin decomposition rate of CFRP waste with different resin systems.
Multiple remanufacturing processes for rCF.
Effects of rCF content and material composition on the properties of rCFRP.
Peer support and academic engagement: The moderated mediation model for college students
Authors: Yang Hongli , Xiang Jingjing 
Published: October 2024

AbstractThe relationship between peer support and academic engagement has been widely explored. However, scarce research examined this relationship for college students, and little was known about the underlying mechanism under this relationship. This study aimed to examine the effect of peer support on academic via the mediation of academic motivation and the moderator of academic anxiety. This model was examined among 4581 Chinese college students (mean age = 20.22, SD = 0.92) who completed the measurement of peer support, academic motivation, academic engagement and academic anxiety. The results revealed that for Chinese college students, peer support significantly positively predicted academic engagement (r = .755, p < .001) and academic motivation could mediate the relationship between peer support and academic engagement (β = .036, 95% CI [0.493, 0.638]). Moreover, as a moderator, academic anxiety weakened the correlation between peer support and academic motivation (β = −.048 95% CI [−0.062, −0.033]). The current research highlights the mechanisms underlying the relationship between peer support and academic engagement, which played a vital role in facilitating college students' academic engagement.
Green synthesized and electro spun flexible carbon current collector for supercapacitor applications
Authors: P U Sreeranjini , D Pughal Selvi , V Vishnu Narayanan , K S Rajni , Joseph Antony , Sajith V. 
Published: October 2024

AbstractIn this work, the carbon flakes were green synthesized from peanut shells and converted into nanofibers (CNF) using a mixture of N, N dimethylformamide, polyvinylidene fluoride, and polyvinyl fluoride polymers by electrospinning technique. The (002) plane of carbon is reflected in the XRD analysis and is supported by the D and G bands reflected in the Raman analysis. The FESEM analysis indicated the formation of nanofibers with a size of 160 nm. The active surface area was calculated from the BET analysis and found to be 889 m2/g. The prepared RuO2 nanoparticles had a spherical grain size of 7.63 nm. the A1g, B2g, and Eg modes of vibrations of the Raman spectrum reflect the phase purity. The electrochemical performance of the prepared CNF current collector was analyzed and compared with that of commercially available current collectors (stainless steel [SS], nickel foam, and carbon cloth). The CV and GCD indicated that the SS has the best performance with RuO2 active material with the highest specific capacitance of 186. 98 F/g at a scan rate of 40 mV/s with maximum energy density and power density values of 2401.19 Wh/Kg and 3.57 W/Kg respectively. The prepared CNF has the second‐best performance with the highest specific capacitance value of 101 F/g at 40 mV/s with maximum energy density and power density values of 1799.58 Wh/Kg and 2.25 W/Kg respectively. The results were supported by the electrochemical impedance spectroscopy.
Phase Transition and Thermodynamic Stability in an Entropy‐Driven Universe
Authors: Chakrabarti Soumya 
Published: October 2024

AbstractMotivated by the notion that the mathematics of gravity can be reproduced from a statistical requirement of maximal entropy, the consequences of introducing an entropic source term in the Einstein–Hilbert action are studied. For a spatially homogeneous cosmological system driven by this entropic source and enveloped by a time‐evolving apparent horizon, a modified version of the second law of thermodynamics is formulated. An explicit differential equation governing the internal entropy profile is found. Using a Hessian matrix analysis of the internal entropy, the author checked the thermodynamic stability for three categorically different toy models describing (i) a cosmology, (ii) a unified cosmic expanson, and (iii) a non‐singular ekpyrotic bounce. The mathematical condition for a second order phase transition during these evolutions from the divergence of specific heat at constant volume is found. The new‐found condition is purely kinematic and quadratic in nature, relating the deceleration parameter and the jerk parameter that chalks out an interesting curve on the parameter space. This condition is valid even without the entropic source term and may be treated as a general property of any phase transition.
Design and synthesis aldehydes–thiourea and thiazolyl hydrazine derivatives as promising antifungal agents against Monilinia fructicola
Authors: Wang Yi‐Rong , Yang Liu , Wang Deng‐Tuo , Li An‐Ping , Zhang Shao‐Yong , Qin Lu‐Lu , Bian Qiang , Zhang Zhi‐Jun , Ding Yan‐Yan , Zhou Han , Peng Deng , Wang Guang‐Han , Liu Ying‐Qian 
Published: October 2024

AbstractBACKGROUNDFungal diseases present a significant threat to global agriculture, necessitating the development of new, safe, and effective fungicides. Existing fungicides face resistance and health risks, prompting the synthesis of novel compounds. Researchers have synthesized aldehyde‐based thiourea and thiazolyl hydrazine derivatives, evaluating their antifungal activities to identify impactful pesticide molecules.RESULTSThe results showed that most of the compounds had broad‐spectrum antifungal activity against six plant pathogenic fungi and four post‐harvest fungi. Notably, compound LN18 showed the best antifungal activity against Monilinia fructicola with a half‐maximal effective concentration (EC50) of 0.17 μg mL−1, which was better than the commercial fungicide natamycin. A structure–activity relationship (SAR) study showed that the presence of unsaturated double bonds in the structure and the length of the carbon chain were the main factors affecting antifungal activity. The presence of unsaturated double bonds and an increase in the length of the carbon chain greatly improved inhibitory activity against the tested pathogens. The preliminary mechanism study showed that LN18 could damage the integrity of the mycelial plasma membrane, leading to leakage of intracellular nucleic acid and protein. LN18 also induced an increase in the intracellular reactive oxygen species level to exert its antifungal effects. In addition, compound LN18 had a stronger antifungal effect in vivo, and better phytotoxicity than natamycin, indicating broad application prospects in agriculture.CONCLUSIONAldehydes–thiourea and thiazolyl hydrazine derivatives demonstrate remarkable antifungal efficacy against plant pathogenic and post‐harvest fungi, offering a promising avenue for commercialization as highly efficacious, cost‐effective and safe antifungal agents. © 2024 Society of Chemical Industry.
Biological Synthesis of ZnO Nanoparticles Using Fruit Extract of Ruta Chalepensis as Photolectrode for Dye Sensitized Solar Cell Application
Authors: Kedir Sabir Fedlu , Tadesse Betemariam Samuel , Tilahun Bekele Eneyew , Abdisa Gonfa Bedasa , Amare Zereffa Enyew , Deressa Edosa Gemechu , Esubalew Debebe Siraye , Tsegaye Mohammed Endale , Haile Habtemariam Tesfaye , Badruddin M. Irfan Anjum 
Published: October 2024

AbstractCurrently energy crisis is one of the challenging issues worldwide. As such, generation of green alternative energy should take the attention of researchers around the globe. This work reports synthesis of zinc oxide nanoparticles (ZnO NPs) using biological method (using fruit extract of Ruta chalepensis) for photoanode of dye sensitized solar cells (DSSCs). In the study, the performance of DSSCs derived from chemically synthesized and biologically synthesized ZnO NPs were evaluated. The plant extract templated synthesis of ZnO NPs were prepared in varied zinc nitrate to R. chalepensis fruit extract ratios of 1 : 2,1 : 1, and 2 : 1 and labeled as g‐ZnO(1 : 2), g‐ZnO(1 : 1) and g‐ZnO(2 : 1); and that of chemically synthesized ZnO NPs is labelled as c‐ZnO (as a control). Thermogravimetric analysis‐differential thermal analysis (TGA/DTA) reveals that ZnO NPs are stable above 450 °C. From X‐ray diffraction (XRD) pattern, average size of g‐ZnO(1 : 2), g‐ZnO(1 : 1), g‐ZnO(2 : 1) and c‐ZnO NPs were estimated to be 7, 13, 18 and 26 nm, respectively. Scanning electron microscopy (SEM) reveals the presence of ZnO in clustered, flake‐like, and some agglomerated spherical forms; and energy dispersive spectroscopy (EDX) confirms presence of Zn and O atoms in the sample. The optical band gaps of g‐ZnO (1 : 2), g‐ZnO(1 : 1), g‐ZnO(2 : 1) and c‐ZnO NPs were measured to be 3.30, 3.25, 3.23 and 3.22 eV respectively using ultraviolet‐visible (UV‐Vis) absorbance spectrophotometer. Fourier transform infrared (FT‐IR) spectroscopic analysis shows the absorption band for Zn−O bonding between 400 and 600 cm−1. The produced photoanode, crystal violet dye, quasi‐solid‐state electrolyte, and counter electrode were used to fabricate DSSCs. The power conversion efficiency (PCE) of the constructed DSSC device with a c‐ZnO photoanode is 1.95 %, and those with a g‐ZnO (2 : 1), g‐ZnO(1 : 1), and g‐ZnO(1 : 2) photoanodes have PCE of 1.9 %, 1.36 %, and 0.215 % respectively.