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  • Open Access

    ARTICLE

    Terrain Controls on NDVI Spatial Variability under Post-Harvest Conditions: A UAV-Based Geomorphometric and Machine Learning Approach in Mediterranean Croplands

    Jesús Rodrigo-Comino1,*, María Teresa González-Moreno1, Lucía Moreno-Cuenca1, Laura Cambronero-Ruiz1, Clemente Irigaray2, Francisco Serrano Bernardo3, Víctor Hugo Durán Zuazo4, Jesús Fernández-Gálvez5, Andrés Caballero-Calvo5, Víctor Rodríguez-Galiano6

    Revue Internationale de Géomatique, Vol.35, pp. 333-349, 2026, DOI:10.32604/rig.2026.081503 - 11 June 2026

    Abstract Soil degradation in Mediterranean agricultural systems is strongly conditioned by topography, water redistribution and solar exposure, factors that can be effectively studied using very high-resolution remote sensing. This study evaluates the potential of Unmanned Aerial Vehicle (UAV)-derived geomorphometry combined with machine learning techniques to analyse the spatial variability of the Normalized Difference Vegetation Index (NDVI) as a surface spectral response under post-harvest conditions in a Mediterranean cereal field affected by soil degradation and gully erosion, located near Casabermeja (Málaga, southern Spain). High-resolution RGB and multispectral UAV data were used to generate a Digital Terrain Model… More >

  • Open Access

    ARTICLE

    Lycium Barbarum Polysaccharides Upregulate Trx2 in Schwann Cells through ESR1 to Repair Sciatic Nerve Injury in Rats

    Guoxu Ma, Yonglu Huang, Fan Gong, Jianke Wu, Yi Ding, Ziyang Zhang, Xiaoliang Li, Jian Gao, Tingting Dang, Bowen Zhang*

    BIOCELL, Vol.50, No.6, 2026, DOI:10.32604/biocell.2026.078402 - 09 June 2026

    Abstract Objectives: Sciatic nerve injury (SNI) impairs quality of life, and Lycium barbarum polysaccharides (LBP) may exert therapeutic effects via regulating Schwann cell (SC) mitochondrial stability, though the mechanism remains unclear. The study aimed to elucidate the therapeutic mechanisms of LBP in mitigating sciatic nerve injury by protecting Schwann cells via the estrogen receptor 1 (ESR1)/thioredoxin 2 (Trx2) pathway. Methods: An in vitro SNI model was established by inducing RSC96 cells with H2O2. Cell counting kit-8 (CCK8) assay, enzyme-linked immunosorbent assay (ELISA), Western blot, reactive oxygen species (ROS) and adenosine triphosphate (ATP) quantification, and mitochondrial membrane potential (MMP) detection were… More >

  • Open Access

    REVIEW

    Polyphenols in mtDNA Repair, Mitochondrial Biogenesis, and Mitophagy: An Integrative Review

    Desirée Victoria-Montesinos*, Pablo Barcina-Pérez*, Ana María García-Muñoz

    BIOCELL, Vol.50, No.6, 2026, DOI:10.32604/biocell.2026.077286 - 09 June 2026

    Abstract Mitochondrial dysfunction is a central hallmark of metabolic, hepatic, cardiovascular, and neurodegenerative diseases. Dietary polyphenols modulate mitochondrial pathways, but their integrated effects remain poorly appreciated. This narrative review synthesizes preclinical and clinical evidence on four polyphenols (resveratrol, epigallocatechin-3-gallate, quercetin, and oleuropein) and examines their mechanisms in mitochondrial biogenesis, mtDNA protection, and mitophagy. Experimental studies indicate that these compounds activate conserved adaptive pathways, including sirtuin 1 (SIRT1) and peroxisome proliferator-activated receptor gamma coactivator 1 alpha (PGC-1α), AMP-activated protein kinase (AMPK), and PTEN-induced kinase 1 (PINK1) with Parkin, therapy enhancing mitochondrial biogenesis, reducing oxidative stress, and promoting More >

  • Open Access

    ARTICLE

    12-O-Tetradecanoylphorbol-13-Acetate Inhibits TGF-β1-Induced Proliferation and Fibrosis in LX-2 Hepatic Stellate Cells by Regulating both YAP and AKT Activities

    Moo Hyun Kim1, Yongdae Yoon2, Chang Wan Kim1, Jun-Won Lee3, Bhupendra Regmi2, Saher Fatima2, Moon Young Kim2,3, Soon Koo Baik2,3, Pil Young Jung1,*, Young Woo Eom2,*

    BIOCELL, Vol.50, No.6, 2026, DOI:10.32604/biocell.2026.076364 - 09 June 2026

    Abstract Background: Although transforming growth factor-β (TGF-β) drives hepatic stellate cell activation and fibrogenesis, the mechanisms by which 12-O-tetradecanoylphorbol-13-acetate (TPA) modulates these processes in TGF-β1-activated hepatic stellate cells remain to be determined. Therefore, we investigated whether TPA alleviates fibrosis in TGF-β1-treated hepatic stellate cells and regulates both canonical and non-canonical pathways. Further, we assessed whether inhibitors of these pathways similarly affect proliferation and fibrosis in LX-2 cells. Methods: LX-2 hepatic stellate cells were used as the experimental model. Cells were treated with TPA, TGF-β, or TGF-β plus TPA, and Yes-associated protein (YAP) and protein kinase B (PKB;… More >

  • Open Access

    ARTICLE

    Knockdown of PKM2 Promotes Proliferation and Neuronal Differentiation of Neural Stem Cells by Inhibiting PINK1/Parkin-Mediated Excessive Mitophagy

    Junming Yan, Boran Xiong, Yingjie Zhu*

    BIOCELL, Vol.50, No.6, 2026, DOI:10.32604/biocell.2026.075319 - 09 June 2026

    Abstract Objective: Neural stem cells (NSCs) are essential for replenishing nerve cells, providing neuroprotection, and repairing damaged brain function, while mitophagy is critical for maintaining NSCs’ homeostasis. The study investigated whether pyruvate kinase M2 (PKM2) regulates NSCs’ proliferation and differentiation by modulating mitophagy. Method: This study established a model of excessive autophagy in neural stem cell mitochondria induced by cobalt chloride (CoCl2) and used plasmid transfection technology to knock down PKM2 expression, examining its effects on NSCs proliferation and differentiation. Additionally, potential mechanisms were explored by overexpressing phosphatase and tensin homolog-induced putative kinase 1 (PINK1) and adding the… More > Graphic Abstract

    Knockdown of PKM2 Promotes Proliferation and Neuronal Differentiation of Neural Stem Cells by Inhibiting PINK1/Parkin-Mediated Excessive Mitophagy

  • Open Access

    ARTICLE

    Design and Optimization of a Novel Double-Heterojunction Lead-Free Cs2BiAgI6 Perovskite Solar Cell with PCBM/C60 Bilayer ETL and CdTe HTL: Numerical Investigation

    S. D. Al-Sahafi*

    Chalcogenide Letters, Vol.23, No.5, 2026, DOI:10.32604/cl.2026.082364 - 02 June 2026

    Abstract In this study, a lead-free double perovskite solar cell structure based on Cs2BiAgI6 was simulated and optimized to enhance photovoltaic performance. The device architecture follows the configuration: ITO/PCBM/C60/Cs2BiAgI6/CdTe/Au. The thicknesses of the electron transport layer (ETL), absorber layer, and hole transport layer (HTL) are systematically optimized to evaluate their impact on key performance parameters. The results indicate that optimal performance is achieved with 600 nm thicknesses for all ETLs and HTL, and 2 μm for the Cs2BiAgl6 absorber. Under these conditions, the device exhibits a short-circuit current density of 23.23 mA/cm2, an open-circuit voltage of 1.08 V, More >

  • Open Access

    REVIEW

    Grape Waste as Leather-Like Material Alternative: A Comprehensive Review of Ancient Practices, Current Technologies, and Future Trends

    Megabi Adane Yizengaw1,*, Alehegn Atalay Birlie1, Tamerat Tesfaye2, Rajan Katrikan1, Eldana Bizuneh Cheklie1, Zelalem Girma1

    Journal of Renewable Materials, Vol.14, No.5, 2026, DOI:10.32604/jrm.2025.02025-0175 - 28 May 2026

    Abstract Grape by-product of the wine industry, rich in polyphenols, tannins, lignin, and natural waxes, the chemical constituents grape skins 45%–55%, seeds 25%–35%, and stems or stalks 25%–35% weight of grape provide intrinsic cross-linking, mechanical reinforcement, antioxidant activity, and water resistance, closely replicating the effects of conventional vegetable tanning without using toxic chemicals. This review comprehensively examines current eco-friendly extraction methods to isolate bioactive compounds, as well as fiber modification techniques to improve polymer compatibility. Composite fabrication involves blending processed grape waste fibers with bio-based polymers and renewable plasticizers to produce materials exhibiting competitive tensile strength,… More >

  • Open Access

    ARTICLE

    Bio-Derived Tannin-Modified Phenolic Carbon Cryogels with Optimized Microstructure for Supercapacitors Application

    Zhiying Lin1, Boju Deng1, Qianqian Zhang1, Jingming Chen2, Xinqiang Ye3, Yuling Lan1, Jiuping Rao1,*, Mizi Fan4, Weigang Zhao1,*

    Journal of Renewable Materials, Vol.14, No.5, 2026, DOI:10.32604/jrm.2025.02025-0096 - 28 May 2026

    Abstract Bio-derived carbon cryogels have garnered significant interest as promising electrode materials for supercapacitors due to their high specific surface area (SSA), hierarchical porosity, and eco-friendly synthesis methods. In this study, a tannin-modified phenolic hydrogel was synthesized using a sustainable tannin–phenol precursor system and subsequently subjected to three distinct drying methods-freeze-drying (FD), supercritical drying (SCD), and ambient pressure drying (APD)-to systematically evaluate their influence on structural integrity, porosity, and electrochemical behavior. Among these, the sample obtained via freeze-drying (TPUF-FD) maintained the most intact porous network, minimizing structural collapse during sublimation of ice under vacuum. This preservation… More > Graphic Abstract

    Bio-Derived Tannin-Modified Phenolic Carbon Cryogels with Optimized Microstructure for Supercapacitors Application

  • Open Access

    ARTICLE

    Numerical Simulation of Elongated Bubbles and Liquid Films in Horizontal Slug Flow

    Xiaojian You1, Zhen Sun1, Lei Zhang1, Weikun Qian1, Cong Wang1, Weigang Pang1, Hongming Li1, Yingshuang Cui1, Chen Chen1, Yue Wang1, Xiao Wu2,*

    FDMP-Fluid Dynamics & Materials Processing, Vol.22, No.5, 2026, DOI:10.32604/fdmp.2026.081350 - 27 May 2026

    Abstract Slug flow poses significant dynamic challenges in multiphase pipeline transport, particularly in complex offshore and Floating Liquefied Natural Gas systems, where conventional one- and two-dimensional models fail to capture the intricate three-dimensional interfacial topologies and transient liquid-film dynamics. To overcome this limitation, the present study develops a three-dimensional transient numerical model based on the coupled level-set and volume-of-fluid (CLSVOF) method within a large eddy simulation (LES) framework, and validates it against high-frequency measurements obtained from a double parallel conductance probe experimental platform. The proposed model successfully resolves phase velocity slip and interfacial morphological evolution, predicting More >

  • Open Access

    ARTICLE

    CFD–DEM Investigation of Material Composition Effects on the Transportability of While-Drilling Lost Circulation Materials in Directional Tools

    Xiaoshan Wang1, Qiang Cui1, Lei Pu2,*

    FDMP-Fluid Dynamics & Materials Processing, Vol.22, No.5, 2026, DOI:10.32604/fdmp.2026.081184 - 27 May 2026

    Abstract The passability (transport behavior) of while-drilling lost circulation materials (LCMs) through directional tools is strongly influenced by material composition and particle characteristics. In this study, a coupled computational fluid dynamics–discrete element method (CFD–DEM) model is developed to systematically evaluate the effects of particle size distribution, concentration, morphology, and fiber inclusion on LCM transport behavior. Visualization experiments conducted using a transparent screen section demonstrate good agreement with the simulated pressure-drop evolution, supporting the validity of the model. The results reveal that increasing particle size from 1.2–1.6 mm to above 2.8 mm shifts the system from a More > Graphic Abstract

    CFD–DEM Investigation of Material Composition Effects on the Transportability of While-Drilling Lost Circulation Materials in Directional Tools

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