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  • Open Access

    ARTICLE

    Experimental Study of Sand Transport Assisted by Self-Suspended Proppant in Complex Fractures

    Yang Zhang1, Xiaoping Yang1, Yalan Zhang1, Mingzhe Han1, Jiayi Sun2, Zhengsheng Xia3,*

    FDMP-Fluid Dynamics & Materials Processing, Vol.22, No.1, 2026, DOI:10.32604/fdmp.2026.075388 - 06 February 2026

    Abstract Self-suspended proppants, which enable clear-water fracturing, represent a promising new class of materials for reservoir stimulation. Given the economic limitations associated with their exclusive use, this study investigates proppant transport behavior in hybrid systems combining self-suspended proppants with conventional 40/70 mesh quartz sand at various mixing ratios. A dedicated experimental apparatus was developed to replicate field-relevant complex fracture networks, consisting of a main fracture and two branching fractures with different deflection angles. Using this system, sand bank formation and proppant distribution were examined for both conventional quartz sand fracturing and fracturing augmented with self-suspended proppants.… More >

  • Open Access

    ARTICLE

    Historical Transportation GIS (1880–2020) for Decision Making in Sustainable Development Goals

    Bárbara Polo-Martín*

    Revue Internationale de Géomatique, Vol.35, pp. 53-78, 2026, DOI:10.32604/rig.2026.071069 - 05 February 2026

    Abstract The expansion of transportation networks, including railways and ports, has been a major force driving urban growth, mobility, and socio-economic transformations since the Industrial Revolution. This study utilizes Historical Geographic Information Systems to examine the global evolution of transportation infrastructure, focusing on railways and ports, from 1880 to 2020. The dataset enables a multidimensional analysis of how transportation systems have shaped cities, influenced regional development, and helped to make possible sustainability efforts. By offering insights into transport accessibility, land-use changes, and economic connectivity, the study provides a robust empirical foundation for understanding long-term infrastructure dynamics. More >

  • Open Access

    ARTICLE

    PpCSC1, a Novel ERD4 Ortholog from Physcomitrium patens, Plays a Negative Role in Salt Stress Tolerance

    Lu Chen1,2,#, Zhijie Ren2,#, Guangmin Zhao2, Xuan He2, Legong Li2, Sheng Teng1,*, Yikun He2,*, Fang Bao2,*

    Phyton-International Journal of Experimental Botany, Vol.95, No.1, 2026, DOI:10.32604/phyton.2025.073817 - 30 January 2026

    Abstract ERD4 proteins, members of the early responsive-to-dehydration family, act as plasma membrane ion channels that contribute to ion homeostasis and modulate plant response to abiotic stresses. However, the functions of ERD4 homologs in non-vascular species remain largely unexplored. Here, we characterized an ERD4 family homolog in Physcomitrium patens (Hedw.) Mitt., PpCSC1 (Calcium-permeable Stress-responsive Cation Channel 1), and investigated its role in salt stress response. PpCSC1 localized to the plasma membrane and functioned as a non-selective cation channel permeable to Na+, K+, Ca2+, and Mg2+. Under salt treatment, PpCSC1 transcripts were markedly downregulated, whereas overexpression lines exhibited enhanced salt sensitivity.… More >

  • Open Access

    ARTICLE

    A Novel Signature-Based Secure Intrusion Detection for Smart Transportation Systems

    Hanaa Nafea1, Awais Qasim2, Sana Abdul Sattar2, Adeel Munawar3, Muhammad Nadeem Ali4, Byung-Seo Kim4,*

    CMC-Computers, Materials & Continua, Vol.86, No.3, 2026, DOI:10.32604/cmc.2025.072281 - 12 January 2026

    Abstract The increased connectivity and reliance on digital technologies have exposed smart transportation systems to various cyber threats, making intrusion detection a critical aspect of ensuring their secure operation. Traditional intrusion detection systems have limitations in terms of centralized architecture, lack of transparency, and vulnerability to single points of failure. This is where the integration of blockchain technology with signature-based intrusion detection can provide a robust and decentralized solution for securing smart transportation systems. This study tackles the issue of database manipulation attacks in smart transportation networks by proposing a signature-based intrusion detection system. The introduced More >

  • Open Access

    REVIEW

    Dual-Mode Data-Driven Iterative Learning Control: Applications in Precision Manufacturing and Intelligent Transportation Systems

    Lei Wang1,2, Menghan Wei2, Ziwei Huangfu3, Shunjie Zhu2, Xuejian Ge1,*, Zhengquan Li4

    CMC-Computers, Materials & Continua, Vol.86, No.2, pp. 1-32, 2026, DOI:10.32604/cmc.2025.071295 - 09 December 2025

    Abstract Iterative Learning Control (ILC) provides an effective framework for optimizing repetitive tasks, making it particularly suitable for high-precision applications in both precision manufacturing and intelligent transportation systems (ITS). This paper presents a systematic review of ILC’s developmental progress, current methodologies, and practical implementations across these two critical domains. The review first analyzes the key technical challenges encountered when integrating ILC into precision manufacturing workflows. Through case studies, it evaluates demonstrated improvements in positioning accuracy, surface finish quality, and production throughput. Furthermore, the study examines ILC’s applications in ITS, with particular focus on vehicular motion control More >

  • Open Access

    ARTICLE

    Bi-STAT+: An Enhanced Bidirectional Spatio-Temporal Adaptive Transformer for Urban Traffic Flow Forecasting

    Yali Cao1, Weijian Hu1,2, Lingfang Li1,*, Minchao Li1, Meng Xu2, Ke Han2

    CMC-Computers, Materials & Continua, Vol.86, No.2, pp. 1-23, 2026, DOI:10.32604/cmc.2025.069373 - 09 December 2025

    Abstract Traffic flow prediction constitutes a fundamental component of Intelligent Transportation Systems (ITS), playing a pivotal role in mitigating congestion, enhancing route optimization, and improving the utilization efficiency of roadway infrastructure. However, existing methods struggle in complex traffic scenarios due to static spatio-temporal embedding, restricted multi-scale temporal modeling, and weak representation of local spatial interactions. This study proposes Bi-STAT+, an enhanced bidirectional spatio-temporal attention framework to address existing limitations through three principal contributions: (1) an adaptive spatio-temporal embedding module that dynamically adjusts embeddings to capture complex traffic variations; (2) frequency-domain analysis in the temporal dimension for… More >

  • Open Access

    ARTICLE

    Unveiling Ionic Conductivity and Ion Transport Properties in Polyvinyl Alcohol-Based Gel Polymer Electrolytes with Quaternary Ammonium Iodide

    M. F. Aziz1,2,*, A. A. Rahim1, A. R. M. Rais1,2,*

    Journal of Polymer Materials, Vol.42, No.4, pp. 1097-1109, 2025, DOI:10.32604/jpm.2025.071129 - 26 December 2025

    Abstract To study the behavior of structural dynamics, ionic conductivity and ion transport properties, the gel polymer electrolytes (GPEs) was developed using polyvinyl alcohol in combination with potassium iodide, dimethyl sulfoxide, ethylene carbonate, propylene carbonate and tetra-N-propylammonium iodide (C12H28IN), The GPEs were synthesized via a solution mixing technique, systematically varying the tetra-N-propylammonium iodide concentration to optimize ionic transport properties. The gel polymer electrolytes (GPEs) preparation was initially dissolving the potassium iodide and tetra-N-propylammonium iodide in a measured combination of ethylene carbonate, propylene carbonate, and dimethyl sulfoxide within a glass container. Subsequently, polyvinyl alcohol (PVA) was introduced into… More >

  • Open Access

    ARTICLE

    Synthesis and characterizations of Cu2BaSnS4 nanoparticles via solvothermal route

    G. Hao*, Z. Chen, R. Xian, W. Yifan

    Chalcogenide Letters, Vol.22, No.3, pp. 255-260, 2025, DOI:10.15251/CL.2025.223.255

    Abstract In present work, Cu2BaSnS4(CBTS) nanoparticles are reported solvothermally synthesized. The formation of single-phase trigonal structure of CBTS nanoparticles is confirmed by XRD and Raman spectroscopic analysis. SEM studies reveal that CBTS exhibits flower shaped structure self-assembling by nanosheets with uniform average thickness 30nm. CBTS materials show abroad absorption in the complete visible range, providing a band-gap value of 1.58eV, indicating potential applications in photocvoltaics. The excellent MB degradation efficiency of 93% under visible light within 100min is achieved, suggesting CBTS is a potential material for effective solar light photocatalytic application. Meanwhile, electrical properties are measured up More >

  • Open Access

    ARTICLE

    Quaternary chalcogenides as transport layers in solid-state DSSC: a feasibility study

    M. H. Ibrahim*, M. R. Salim, M. Y. Mohd Nor, A. S. Abdullah, A. I. Azmi

    Chalcogenide Letters, Vol.22, No.6, pp. 551-560, 2025, DOI:10.15251/CL.2025.226.551

    Abstract Four chalcogenide compounds: copper zinc germanium sulfide (CZGS), copper zinc germanium selenide (CZGSe), copper barium tin sulfide (CBTS), and copper manganese tin sulfide (CMTS) were proposed as hole transport layer (HTL) in dye-sensitized solar cell (DSSC). The DSSC structure comprises fluorine-doped tin oxide (FTO) as the top electrode, zinc oxysulfide (ZnOS) as the electron transport layer (ETL), N719 dye as the light absorber, chalcogenides as the HTL, and gold (Au) as the back electrode. By utilizing the SCAPS 1- D simulator, the optimal thicknesses for ZnOS, HTL candidates and N719 dye were determined to be More >

  • Open Access

    ARTICLE

    Structural, optical and electrical properties of NiO thin films for hole transport layer in chalcogenide and perovskite materials based solar cells

    M. Abbasa, M. Haseeb-u-Rehmana, M. Sohailb, G. H. Tariqa,*

    Chalcogenide Letters, Vol.22, No.7, pp. 561-577, 2025, DOI:10.15251/CL.2025.227.561

    Abstract This work presents the fabrication of NiO thin films via versatile sol-gel spin coating method and investigation of annealing effects on their physical properties. After the deposition process, the NiO thin films underwent annealing process at different values of temperatures ranging from 200°C to 350°C for one hour duration. XRD patterns confirmed the polycrystalline nature, along the preferred orientations (110) and (101) planes. Nanoparticles in NiO thin films demonstrated an increase in crystallite size with rising annealing temperatures, reaching a maximum size of 49 nm at annealing temperature 300°C. FTIR patterns revealed Ni-O bands at… More >

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