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  • Open Access


    Inertial and Particle Shape Effects on Fluid-Particle Suspension Flows: A Resolved SPH-DEM Study

    Yueting Li1,*, Ning Guo1, Zhongxuan Yang1

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.25, No.2, pp. 1-1, 2023, DOI:10.32604/icces.2023.09970

    Abstract The rheological behavior of fluid-particle suspensions affects the flow dynamics of natural processes such as lavas, flow-type landslides and sediment transport. This study presents results of fully resolved simulations of monodisperse non-Brownian suspensions in a Couette flow using the smoothed particle hydrodynamics (SPH) method coupled with discrete element method (DEM), which allows for simulation of arbitrary-shaped particles. Several benchmark tests have been conducted to verify the reliability of the method. Two density ratios are considered in the study, i.e., 2.65 and 10, with the average particle area fraction varying from 14% to 47% and particle Reynolds number varying from 0.15… More >

  • Open Access



    N. Vijayaa,*, S. M. Arifuzzamanb, N. Raghavendra Saic, Ch. Manikya Raod

    Frontiers in Heat and Mass Transfer, Vol.15, pp. 1-9, 2020, DOI:10.5098/hmt.15.26

    Abstract The upfront intension of this study is to explore the advances in electrically conducting Casson fluid induced due to a porous elongated surface taking Arrhenius activation energy, viscous dissipation and joule heating into account. Uniform magnetic and electric fields are imposed on the given flow. Variables of similarity are induced to transmute partial differential equations into dimensionless equations and resolved numerically by elegant method bvp4c. To scrutinize the behavior of critical parameters on flow configurations graphs and table are portrayed. From graphical moments, it is analyzed that velocity of the liquid diminish for advanced values of non-Newtonian rheology parameter, magnetic… More >

  • Open Access


    Effect of Oils on SBS Modified Asphalt: Rheological Characteristics and Oxidation Aging

    Jing Xu1,2,*, Yuquan Yao3, Kai Zhang1, Jiangang Yang2, Jie Gao2, Jian Zhou2

    Journal of Renewable Materials, Vol.11, No.3, pp. 1339-1351, 2023, DOI:10.32604/jrm.2022.023270

    Abstract This study focuses on the effect of oils on rheology and oxidation aging of Styrene-Butadiene-Styrene modified asphalt (SBSMA) in the long term, after reducing one low-temperature Performance Grade (PG) of SBSMA by incorporating oils. Two oils, including corn-based bio-oil and re-refined engine oil bottom (REOB), were selected to enhance the low-temperature performance of SBSMA. All samples were subjected to Rolling Thin Film Oven (RTFO) aging and 20-h as well as 40-h Pressure Aging Vessel (PAV20 and PAV40) aging, prior to multiple stress creep recovery (MSCR), frequency sweep and Flourier transform infrared spectroscopy (FTIR) scanning. A good high-temperature performance of oil/SBS… More >

  • Open Access


    Biomechanics of transendothelial migration by cancer cells


    BIOCELL, Vol.46, No.11, pp. 2381-2386, 2022, DOI:10.32604/biocell.2022.021368

    Abstract Cancer metastasis is still a major social issue with limited knowledge of the formation of tumors and their growth. In addition the formation of metastases is very difficult to understand, since it involves very complex physical mechanisms such as cellular interactions and cell rheology, which are flow-dependent. Previous studies investigated transendothelial migration using sophisticated techniques such as microfluidics, traction force microscopy (TFM) or Atomic Force Microscopy (AFM), combined with physical modeling. Here we summarize recent results and suggest new ways to investigate the precise mechanisms used by cancer cells to undergo transendothelial migration. More >

  • Open Access


    Toward an optimized strategy of using various airway mucus clearance techniques to treat critically ill COVID-19 patients


    BIOCELL, Vol.46, No.4, pp. 855-871, 2022, DOI:10.32604/biocell.2022.017520

    Abstract Coronavirus disease 2019 (COVID-19) caused by acute respiratory syndrome coronavirus 2 (SARS-Cov-2) is still threatening the human life and society throughout the world. For those critically ill patients, mechanical ventilation (MV) is essential to provide life support during treatment. However, both the virus infection and MV disrupt the balance between secretion and elimination of airway mucus and lead to mucus accumulation in the lung. Postmortem examination verified that the lungs in patients died of COVID-19 are indeed filled with sticky mucus, suggesting a great need to improve airway mucus clearance in critically ill COVID-19 patients. Therefore, it may be helpful… More >

  • Open Access


    Dynamic Mechanical and Chemorheology Analysis for the Blended Epoxy System with Polyurethane Modified Resin

    Xue Xin1,#, Yu Rong1,#, Linping Su1, Zhengmei Qiu1, Chenjun Yang1, Ming Liang1,*, Ping Ji2, Guoqiang Zhong3, Zhanyong Yao1,*

    Journal of Renewable Materials, Vol.10, No.4, pp. 1081-1095, 2022, DOI:10.32604/jrm.2022.018021

    Abstract As the important matrix material, epoxy resin has been widely used in the composites for various fields. On account of the poor toughness of epoxy resin limiting their suitability for advanced applications, considerable interests have been conducted to modify the epoxy resin to meet the engineering requirements. In this study, the bio-based polyurethane (PU) modified resin was adopted to modify the pure bisphenol-A epoxy by blending method with various proportions. Aiming to illuminate the curing behavior, mechanical and thermal properties, the blended epoxy systems were characterized by viscosity-time analysis, dynamic mechanical analysis (DMA) at different frequencies and temperatures, mechanical tensile… More >

  • Open Access


    Effect of Mixing Strategy on the Structure-Properties of the PLA/PBAT Blends Incorporated with CNC

    Deniz Sema Sarul1, Dogan Arslan2, Emre Vatansever1, Yusuf Kahraman2, Ali Durmus3, Reza Salehiyan4, Mohammadreza Nofar1,2,*

    Journal of Renewable Materials, Vol.10, No.1, pp. 149-164, 2022, DOI:10.32604/jrm.2022.017003

    Abstract Polylactide (PLA)/poly (butylene adipate-co-terephthalate) (PBAT) blend nanocomposites including 3 wt% of cellulose nanocrystals (CNCs) were prepared by melt compounding method in a twin-screw extruder and an internal mixer. Blend nanocomposites were formulated by diluting three different masterbatches prepared by solution casting method that contained 7 wt% of CNC. These masterbatches were: (m1) PLA/PBAT/CNC masterbatch; (m2) PLA/CNC masterbatch; and (m3) PBAT/CNC masterbatch. These were to explore how different preparation methods affect the dispersion and localization of CNC and hence the properties of PLA/PBAT/CNC blend nanocomposites. Scanning electron microscopy (SEM) was used to study the structural changes of the blends. Rheological properties… More >

  • Open Access


    Influence of Xyloglucan Molar Mass on Rheological Properties of Cellulose Nanocrystal/Xyloglucan Hydrogels

    Malika Talantikite1,*, Antoine Gourlay1, Sophie Le Gall1, Bernard Cathala1

    Journal of Renewable Materials, Vol.7, No.12, pp. 1381-1390, 2019, DOI:10.32604/jrm.2019.07838

    Abstract Plant components are an inexhaustible source for the construction of bio-based materials. Here we report, for the first time, the elaboration of biobased cellulose nanocrystals (CNC)/xyloglucan (XG) hydrogels. XG is a hemicellulose displaying a great affinity for cellulose surface and can be thus irreversibly adsorbed on CNC. Properties of the hydrogels were investigated by varying the molar mass of XG either by enzymatic treatment with Endoglucanase (EG2) or physical fractionation by ultrasound (US). Fractions were characterised by high-performance size exclusion chromatography (HPSEC) and their monosacchari decompositions were determined. Three fractions with high, average and small molar mass, (800, 300 and… More >

  • Open Access


    Development History, Progress and Future Prospects of Biomechanics and Biorheology in Chongqing University
    —For Specially Celebrating the Centennial of Professor Yuan-Cheng Fung

    Guixue Wang1,*, Li Yang1

    Molecular & Cellular Biomechanics, Vol.16, Suppl.2, pp. 10-10, 2019, DOI:10.32604/mcb.2019.08410

    Abstract The biomechanics research of Chongqing University (CQU) began in the late 1970s, which has always been guided and helped by Prof. YC Fung. Prof. YP Wu, Prof. GR Wang at CQU were two of the earliest four Chinese scholars to visit and study in Fung's laboratory in the United States. In the autumn of 1979, Fung held a biomechanical workshop in CQU and the former Huazhong Institute of Technology. With the help of him, Prof. YP Wu founded the first Biomechanics Research Lab in China in the late 1970s. The first program for master’s degree on biomechanics was approved to… More >

  • Open Access


    Rheological Studies on Glycerol Plasticized Gelatin and Its Blends with Epoxidized Soybean Oil

    E. M. Ciannamea1,*, L. A. Castillo2,3, R. A. Ruseckaite1, S. E. Barbosa2,3

    Journal of Renewable Materials, Vol.7, No.1, pp. 21-30, 2019, DOI:10.32604/jrm.2019.00043

    Abstract Blends of gelatin (Ge) plasticized with varying amounts of glycerol (Gly), buffer solution pH 10 and epoxidized soybean oil (ESO) to enhance hydrophobicity were prepared by mixing and injection-molding. Blends were characterized by rheological tests and microscopy to select optimal conditions for scaling up their processing. The effect of each component on rheological response was analyzed using parallel plate geometry. Coating of gelatin specimens with PDMS during rheological tests led to reliable and reproducible results since water evaporation was prevented. A gradual increment in ESO concentration led to blends with increased degree of phase separation, as evidenced by optical and… More >

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