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  • Open Access

    ARTICLE

    A New Quadrilateral Finite Element Formulation for the Free Vibration Analysis of CNT-Reinforced Plates with Cutouts

    Boudjema Bendaho1, Abdelhak Mesbah1, Zakaria Belabed1,2,*

    CMC-Computers, Materials & Continua, Vol.85, No.2, pp. 2781-2805, 2025, DOI:10.32604/cmc.2025.069709 - 23 September 2025

    Abstract A new quadrilateral finite element IQ4 is developed for the free vibration of carbon nanotube-reinforced composite (CNTRC) perforated plates with a central cutout. By enriching the membrane part and incorporating a projected shear technique, the IQ4 element is proposed to address the known limitations of the standard Q4 element, such as shear locking and limited consistency in the coupling of membrane-bending components. The proposed element is formulated within the FSDT-based framework and assessed through benchmark tests to verify its convergence and accuracy. The governing equations are obtained via the weak form of Hamilton’s principle. Particular… More >

  • Open Access

    ARTICLE

    Preoperative ECMO Bridging in Pediatric Heart Transplantation: A Cohort Study on Graft Remodeling, Inflammatory Biomarkers and Survival

    Hui Yi1,2,#, Hongjian Shi2,3,#, Fuquan Kan2,4,#, Fan Han2, Lei Wan5, Xiaoyang Hong1, Zhe Zhao1, Junjie Shao2, Gang Wang1, Hui Wang1, Hua Yan5, Xiujuan Shi1, Ran Zhang2,6,*, Gengxu Zhou1,*

    Congenital Heart Disease, Vol.20, No.4, pp. 519-530, 2025, DOI:10.32604/chd.2025.067164 - 18 September 2025

    Abstract Background: To investigate the impact of preoperative extracorporeal membrane oxygenation (ECMO) on clinical outcomes in pediatric heart transplantation (PHT). Methods: This retrospective cohort analysis was conducted on 19 pediatric heart transplant recipients, divided into two groups: ECMO and non-ECMO, based on whether preoperative ECMO was utilized. We evaluated the patients’ surgical conditions, postoperative complications, and survival rates. Additionally, the analysis focused on the differences and correlations in clinical characteristics, inflammatory markers, and long-term survival outcomes. Results: There was no statistically significant difference in perioperative survival rates between the ECMO group (85.7%) and the non-ECMO group (83.3%). However,… More >

  • Open Access

    ARTICLE

    Dual-Stream Deep Learning for Health Monitoring of HDPE Geomembranes in Landfill Containment Systems

    Yuhao Zhang1,2,3, Peiqiang Zhao1,2, Xing Chen1,2, Shaoxuan Zhang4, Xinglin Zhang1,2,*

    Structural Durability & Health Monitoring, Vol.19, No.5, pp. 1343-1365, 2025, DOI:10.32604/sdhm.2025.066558 - 05 September 2025

    Abstract The structural integrity monitoring of high-density polyethylene (HDPE) geomembranes in landfill containment systems presents a critical engineering challenge due to the material’s vulnerability to mechanical degradation and the complex vibration propagation characteristics in large-scale installations. This study proposes a dual-stream deep learning framework that synergistically integrates raw vibration signal analysis with physics-guided feature extraction to achieve precise rupture detection and localization. The methodology employs a hierarchical neural architecture comprising two parallel branches: a 1D convolutional network processing raw accelerometer signals to capture multi-scale temporal patterns, and a physics-informed branch extracting material-specific resonance features through continuous More >

  • Open Access

    ARTICLE

    National survey of radiotherapy and androgen deprivation therapy strategies with PSMA-PET/CT integration in intermediate-risk prostate cancer: TROD 09-007 study

    Aysenur Elmali1, Birhan Demirhan2, Caglayan Selenge Beduk Esen3, Ozan Cem Guler4, Pervin Hurmuz5, Cem Onal1,4,*

    Canadian Journal of Urology, Vol.32, No.4, pp. 243-254, 2025, DOI:10.32604/cju.2025.066700 - 29 August 2025

    Abstract Background: Intermediate-risk prostate cancer (IR-PC) represents a heterogeneous group requiring nuanced treatment approaches, and recent advancements in radiotherapy (RT), androgen deprivation therapy (ADT), and prostate-specific membrane antigen positron emission tomography (PSMA-PET/CT) imaging have prompted growing interest in personalized, risk-adapted management strategies. This study by the Turkish Society for Radiation Oncology aims to examine radiation oncologists’ practices in managing IR-PC, focusing on RT and imaging modalities to identify trends for personalized treatments. Methods: A cross-sectional survey was conducted among Turkish radiation oncologists treating at least 50 prostate cancer (PC) cases annually. The 22-item questionnaire covered IR-PC… More >

  • Open Access

    ARTICLE

    Numerical Simulation of Air-Assisted Heating for Cold-Start in Cathode-Open Proton Exchange Membrane Fuel Cells

    Wei Shi1,2, Shusheng Xiong1,2,3,*, Wei Li2,3, Kai Meng4, Qingsheng Liu4

    Energy Engineering, Vol.122, No.9, pp. 3507-3523, 2025, DOI:10.32604/ee.2025.065579 - 26 August 2025

    Abstract In the realm of all-electric aircraft research, the integration of cathode-open proton exchange membrane fuel cells (PEMFC) with lithium batteries as a hybrid power source for small to medium-sized unmanned aerial vehicles (UAVs) has garnered significant attention. The PEMFC, serving as the primary energy supply, markedly extends the UAV’s operational endurance. However, due to payload limitations and spatial constraints in the airframe layout of UAVs, the stack requires customized adaptation. Moreover, the implementation of auxiliary systems to facilitate cold starts of the PEMFC under low-temperature conditions is not feasible. Relying solely on thermal insulation measures… More >

  • Open Access

    ARTICLE

    Numerical Study on Hemodynamic Characteristics and Distribution of Oxygenated Flow Associated with Cannulation Strategies in Veno-Arterial Extracorporeal Membrane Oxygenation Support

    Da Li1, Yuqing Tian1, Chengxin Weng2,3, Fuyou Liang1,4,5,*

    CMES-Computer Modeling in Engineering & Sciences, Vol.143, No.3, pp. 2867-2882, 2025, DOI:10.32604/cmes.2025.066444 - 30 June 2025

    Abstract Veno-arterial extracorporeal membrane oxygenation (VA-ECMO) is a life support intervention for patients with refractory cardiogenic shock or severe cardiopulmonary failure. However, the choice of cannulation strategy remains contentious, partly due to insufficient understanding of hemodynamic characteristics associated with the site of arterial cannulation. In this study, a geometrical multiscale model was built to offer a mathematical tool for addressing the issue. The outflow cannula of ECMO was inserted into the ascending aorta in the case of central cannulation, whereas it was inserted into the right subclavian artery (RSA) or the left iliac artery (LIA) in… More >

  • Open Access

    ARTICLE

    Effect of Trapezoidal Obstacle Height and Arrangement Density on the Performance Enhancement of Tri-Serpentine PEMFCs

    Hongen Li, Hongjuan Ren*, Cong Li, Yecui Yan

    Frontiers in Heat and Mass Transfer, Vol.23, No.3, pp. 921-941, 2025, DOI:10.32604/fhmt.2025.066512 - 30 June 2025

    Abstract The flow field architecture of the proton exchange membrane fuel cell (PEMFC) cathode critically determines its performance. To enhance PEMFC operation through structural optimization, trapezoidal obstacles were implemented in the cathode flow channels. The height dependence of these obstacles was systematically investigated, revealing that a 0.7 mm obstacle height enhanced mass transfer from channels to the gas diffusion layer (GDL) compared to conventional triple-serpentine designs. This configuration achieved a 12.08% increase in limiting current density alongside improved water management. Subsequent studies on obstacle distribution density identified 75% density as optimal, delivering maximum net power density More >

  • Open Access

    ARTICLE

    The Addition of Calcium and Strontium Improves Salt Tolerance of Chinese Cabbage at the Germination Stage

    Shiyang Li1,#, Jia Song1,#, Bingxuan Fan1, Yunshu Tang2, Yamin Xing1, Yuqi Gao1, Nianwei Qiu1,*, Hongxia Zhang1,3,*

    Phyton-International Journal of Experimental Botany, Vol.94, No.6, pp. 1811-1826, 2025, DOI:10.32604/phyton.2025.065751 - 27 June 2025

    Abstract Strontium has similar chemical properties to calcium and has recently been recognized as a non-essential beneficial element for plants. In order to compare the effects of strontium and calcium on improving salt tolerance of Chinese cabbage during the germination stage, 2, 4, and 8 mmol/L of SrCl2, CaCl2 or an equimolar mixture of both were added separately to a 150 mmol/L NaCl solution. The results showed that Ca-Sr addition significantly increased seed viability, seed vigor, seed germination rate and seed germination uniformity of Chinese cabbage compared with the salt-control group. The differences in germination percentage (GP)… More >

  • Open Access

    REVIEW

    Integrin Alpha8 Beta1 (81): An In-Depth Review of an Overlooked RGD-Binding Receptor

    Iman Ezzat, Marisa Zallocchi*

    BIOCELL, Vol.49, No.5, pp. 789-811, 2025, DOI:10.32604/biocell.2025.062325 - 27 May 2025

    Abstract Integrins are heterodimeric transmembrane receptors that mediate bidirectional interactions between the intracellular cytoskeletal array and the extracellular matrix. These interactions are critical in tissue development and function by regulating gene expression and sustaining tissue architecture. In humans, the integrin family is composed of 18 alpha (α) and 8 beta (β) subunits, constituting 24 distinct αβ combinations. Based on their structure and ligand-binding properties, only a subset of integrins, 8 out of 24, recognizes the arginine-glycine-aspartate (RGD) tripeptide motif in the native ligand. One of the major RGD binding integrins is integrin alpha 8 beta 1 More >

  • Open Access

    REVIEW

    Review of Conductive Polymer Coatings for Metallic Bipolar Plates in Proton Exchange Membrane Fuel Cells

    Ziyang Niu1,#, Xiaofen Wang2,4,#, Yuanyuan Li1,2,3,*, Zhuo He2, Feng Huang1, Qianjun Deng2, Fei Hu2, Qiongyu Zhou2,*

    Journal of Polymer Materials, Vol.42, No.1, pp. 57-80, 2025, DOI:10.32604/jpm.2025.060401 - 27 March 2025

    Abstract Proton exchange membrane fuel cells (PEMFCs) have gained increasing interests as promising power sources due to their ability to convert hydrogen and oxygen directly into electricity with high efficiency and zero greenhouse gas emissions. Bipolar plates (BPs) are considered as a critical component of PEMFCs, serving to collect current, separate gases, distribute the flow field, and conduct heat. This paper reviews the technical status and advancements in BP materials, with special focus on strategies for enhancing interfacial contact resistance (ICR) and corrosion resistance through conductive polymer (CP) coatings. First, commonly used BP materials in PEMFCs More >

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