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  • Open Access

    ARTICLE

    Viscous Flow Activation Energy and Short-Term Aging Resistance of SBS-Modified Asphalt Enhanced by PPA Oil-Grinding Activated MoS2

    Shun Chen1,2,3, Yingjie Wang1, Xingyang He1,2,3,*, Ying Su1,2,3, Yingyuan Pan1, Yimin Cao1, Wentian Wang1, Chao Yang1,2,3, Bo Jiang1,2,3, Shaolin Zhang4

    FDMP-Fluid Dynamics & Materials Processing, Vol.21, No.2, pp. 387-404, 2025, DOI:10.32604/fdmp.2024.055697 - 06 March 2025

    Abstract Styrene-butadiene-styrene (SBS) modified asphalt (SA) has long found effective applications in road construction materials. When combined with fillers, SBS-modified asphalt has demonstrated promising resistance to fatigue cracking caused by temperature fluctuations and aging. In this study, molybdenum disulfide (MoS2) and polyphosphoric acid (PPA) were ground in naphthenic oil (NO) and subjected to mechanical activation to create PPA-modified MoS2, referred to as OMS-PPA. By blending various ratios of OMS-PPA with SBS-modified asphalt, composite-modified asphalts were successfully developed to enhance their overall properties. To assess the mechanical characteristics and stability of these modified asphalts, various methods were employed,… More > Graphic Abstract

    Viscous Flow Activation Energy and Short-Term Aging Resistance of SBS-Modified Asphalt Enhanced by PPA Oil-Grinding Activated MoS<sub>2</sub>

  • Open Access

    ARTICLE

    Spatial Variability Assessment on Staple Crop Yields in Hisar District of Haryana, India Using GIS and Remote Sensing

    Sanghati Banerjee1, Om Pal2, Tauseef Ahmad3, Shruti Kanga4, Suraj Kumar Singh1,*, Bhartendu Sajan1

    Revue Internationale de Géomatique, Vol.34, pp. 89-106, 2025, DOI:10.32604/rig.2025.057963 - 24 February 2025

    Abstract Agriculture is a primary activity in many countries, with wheat being a major cereal crop in India. Accurate pre-harvest forecasts of crop acreage and production are critical for policymakers to address supply-demand dynamics, pricing, and trade. This study focuses on estimating wheat acreage and yield in Barwala block, Hisar district, Haryana, for the 2019–2020 Rabi season using remote sensing techniques. Multi-temporal satellite data capturing phenological stages of wheat (Seedling to Ripening) were processed using supervised classification with a maximum likelihood classifier in ERDAS Imagine. Wheat crop acreage was determined by overlaying ground truth points on… More >

  • Open Access

    ARTICLE

    A Modified Deep Residual-Convolutional Neural Network for Accurate Imputation of Missing Data

    Firdaus Firdaus, Siti Nurmaini*, Anggun Islami, Annisa Darmawahyuni, Ade Iriani Sapitri, Muhammad Naufal Rachmatullah, Bambang Tutuko, Akhiar Wista Arum, Muhammad Irfan Karim, Yultrien Yultrien, Ramadhana Noor Salassa Wandya

    CMC-Computers, Materials & Continua, Vol.82, No.2, pp. 3419-3441, 2025, DOI:10.32604/cmc.2024.055906 - 17 February 2025

    Abstract Handling missing data accurately is critical in clinical research, where data quality directly impacts decision-making and patient outcomes. While deep learning (DL) techniques for data imputation have gained attention, challenges remain, especially when dealing with diverse data types. In this study, we introduce a novel data imputation method based on a modified convolutional neural network, specifically, a Deep Residual-Convolutional Neural Network (DRes-CNN) architecture designed to handle missing values across various datasets. Our approach demonstrates substantial improvements over existing imputation techniques by leveraging residual connections and optimized convolutional layers to capture complex data patterns. We evaluated… More >

  • Open Access

    ARTICLE

    Experimental Study and a Modified Model for Temperature-Recovery Stress of Shape Memory Alloy Wire under Different Temperatures

    Zhi-Xiang Wei1, Wen-Wei Wang2,*, Yan-Jie Xue3, Wu-Tong Zhang2, Qiu-Di Huang2

    Structural Durability & Health Monitoring, Vol.19, No.2, pp. 347-364, 2025, DOI:10.32604/sdhm.2024.054559 - 15 January 2025

    Abstract To investigate the performance of utilizing the shape memory effect of SMA (Shape Memory Alloy) wire to generate recovery stress, this paper performed single heating recovery stress tests and reciprocating heating-cooling recovery stress tests on SMA wire under varying initial strain conditions. The effects of various strains and different energized heating methods on the recovery stress of SMA wires were explored in the single heating tests. The SMA wire was strained from 2% to 8% initially, and two distinct heating approaches were employed: one using a large current interval for rapid heating and one using… More >

  • Open Access

    ARTICLE

    Grid-Connected/Islanded Switching Control Strategy for Photovoltaic Storage Hybrid Inverters Based on Modified Chimpanzee Optimization Algorithm

    Chao Zhou1, Narisu Wang1, Fuyin Ni1,2,*, Wenchao Zhang1

    Energy Engineering, Vol.122, No.1, pp. 265-284, 2025, DOI:10.32604/ee.2024.057380 - 27 December 2024

    Abstract Uneven power distribution, transient voltage, and frequency deviations are observed in the photovoltaic storage hybrid inverter during the switching between grid-connected and island modes. In response to these issues, this paper proposes a grid-connected/island switching control strategy for photovoltaic storage hybrid inverters based on the modified chimpanzee optimization algorithm. The proposed strategy incorporates coupling compensation and power differentiation elements based on the traditional droop control. Then, it combines the angular frequency and voltage amplitude adjustments provided by the phase-locked loop-free pre-synchronization control strategy. Precise pre-synchronization is achieved by regulating the virtual current to zero and… More >

  • Open Access

    ARTICLE

    Numerical Simulation of Heat Transfer Process and Heat Loss Analysis in Siemens CVD Reduction Furnaces

    Kunrong Shen*, Wanchun Jin, Jin Wang

    Frontiers in Heat and Mass Transfer, Vol.22, No.5, pp. 1361-1379, 2024, DOI:10.32604/fhmt.2024.057372 - 30 October 2024

    Abstract The modified Siemens method is the dominant process for the production of polysilicon, yet it is characterised by high energy consumption. Two models of laboratory-grade Siemens reduction furnace and 12 pairs of rods industrial-grade Siemens chemical vapor deposition (CVD) reduction furnace were established, and the effects of factors such as the diameter of silicon rods, the surface temperature of silicon rods, the air inlet velocity and temperature on the heat transfer process inside the reduction furnace were investigated by numerical simulation. The results show that the convective and radiant heat losses in the furnace increased… More >

  • Open Access

    ARTICLE

    Thermosensitive and Wound-Healing Gelatin-Alginate Biopolymer Hydrogels Modified with Humic Acids

    Denis Miroshnichenko1, Vladimir Lebedev2, Katerina Lebedeva2, Аnna Cherkashina2, Sergey Petrushenko3,4,*, Olena Bogoyavlenska1, Аnzhela Olkhovska5, Ihor Hrubnyk6, Liudmyla Maloshtan6, Natalja Klochko7

    Journal of Renewable Materials, Vol.12, No.10, pp. 1691-1713, 2024, DOI:10.32604/jrm.2024.054769 - 23 October 2024

    Abstract The main goal of the article is the creation and study of thermosensitive and wound-healing gelatin-alginate biopolymer hydrogels modified with humic acids. Their rheological properties, swelling and contraction behavior were experimentally investigated, elucidated using Fourier transform infrared spectroscopy and used to achieve the physiological melting point, which is necessary for successful drug delivery. It has been shown that in the gelatin-alginate-humic acid biopolymer hydrogels systems, it is possible to obtain a gel-sol transition temperature close to the physiological temperature of 37°C, which is important for drug delivery in the treatment of wounds. By changing the… More > Graphic Abstract

    Thermosensitive and Wound-Healing Gelatin-Alginate Biopolymer Hydrogels Modified with Humic Acids

  • Open Access

    ARTICLE

    Chemically Modified Sugarcane Bagasse for Innovative Bio-Composites. Part One: Production and Physico-Mechanical Properties

    Peyman Ahmadi1,*, Davood Efhamisisi1,*, Marie-France Thévenon2,3, Hamid Zarea Hosseinabadi1, Reza Oladi1, Jean Gerard2,3

    Journal of Renewable Materials, Vol.12, No.10, pp. 1715-1728, 2024, DOI:10.32604/jrm.2024.054076 - 23 October 2024

    Abstract Sugarcane bagasse is an agro-waste that could replace timber resources for the production of bio-composites. Composite boards such as particleboard offer an issue for the use and recycling of poor quality timber, and these engineered products can overcome some solid wood limitations such as heterogeneity and dimension. Bagasse offers an alternative to wood chips for particleboard production but present some disadvantages as well, such as poor physico-mechanical properties. To address these issues, bagasse fibers were treated with an innovative natural resin formulated with tannin and furfural. Impregnated particles with different concentrations of resin (5%, 10%,… More > Graphic Abstract

    Chemically Modified Sugarcane Bagasse for Innovative Bio-Composites. Part One: Production and Physico-Mechanical Properties

  • Open Access

    ARTICLE

    Parametric Energy and Economic Analysis of Modified Combined Cycle Power Plant with Vapor Absorption and Organic Rankine Cycle

    Abdul Moiz1, Malik Shahzaib1, Abdul Ghafoor Memon1, Laveet Kumar2, Mamdouh El Haj Assad3,*

    Energy Engineering, Vol.121, No.11, pp. 3095-3120, 2024, DOI:10.32604/ee.2024.051214 - 21 October 2024

    Abstract To meet the escalating electricity demand and rising fuel costs, along with notable losses in power transmission, exploring alternative solutions is imperative. Gas turbines demonstrate high efficiency under ideal International Organization for Standardization (ISO) conditions but face challenges during summer when ambient temperatures reach 40°C. To enhance performance, the proposal suggests cooling inlet air by 15°C using a vapor absorption chiller (VAC), utilizing residual exhaust gases from a combined cycle power plant (CCPP) to maximize power output. Additionally, diverting a portion of exhaust gases to drive an organic Rankine cycle (ORC) for supplementary power generation… More >

  • Open Access

    PROCEEDINGS

    Transient Analysis and Nonlinear Tribo-Dynamics of Marine Offset-Halves Journal Bearing Under Step Loading

    Kai Wang1,2,3, Lihua Yang1,2,3,*

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.29, No.3, pp. 1-1, 2024, DOI:10.32604/icces.2024.011018

    Abstract Although offset-halves journal bearings (OHJBs) are widely used in marine powertrains, the research on nonlinear tribo-dynamics is still limited, particularly under dynamic loading. To overcome such limitations, this study proposes a novel dynamic model that couples the influences of step load and thermoelastohydrodynamic (TEHD) effect. Based on the numerical model, a transient TEHD analysis for dynamically loaded OHJBs is done. Moreover, a modified stability criterion is developed. Nonlinear behaviors and transient stability of OHJBs under step load are systematically studied. The correlations of bearing characteristics such as the maximum film temperature, minimum film thickness, maximum More >

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