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  • Open Access

    ARTICLE

    Analysis of the Flow Field and Impact Force in High-Pressure Water Descaling

    Yue Cui1,*, Liyuan Wang2, Jian Wu1, Haisheng Liu1, Di Wu1

    FDMP-Fluid Dynamics & Materials Processing, Vol.20, No.1, pp. 165-177, 2024, DOI:10.32604/fdmp.2023.030311 - 08 November 2023

    Abstract This study aims to improve the performances of the high-pressure water descaling technology used in steel hot rolling processes. In particular, a 2050 mm hot rolling line is considered, and the problem is investigated by means of a fluid–structure interaction (FSI) method by which the descaling effect produced by rolling coils with different section sizes is examined. Assuming a flat fan-shaped nozzle at the entrance of the R1R2 roughing mill, the out- flow field characteristics and the velocity distribution curve on the strike line (at a target distance of 30–120 mm) are determined. It is More >

  • Open Access

    ARTICLE

    A CFD Model to Evaluate Near-Surface Oil Spill from a Broken Loading Pipe in Shallow Coastal Waters

    Portia Felix1, Lee Leon1,*, Derek Gay1, Stefano Salon2, Hazi Azamathulla1

    FDMP-Fluid Dynamics & Materials Processing, Vol.20, No.1, pp. 59-77, 2024, DOI:10.32604/fdmp.2023.028031 - 08 November 2023

    Abstract Oil spills continue to generate various issues and concerns regarding their effect and behavior in the marine environment, owing to the related potential for detrimental environmental, economic and social implications. It is essential to have a solid understanding of the ways in which oil interacts with the water and the coastal ecosystems that are located nearby. This study proposes a simplified model for predicting the plume-like transport behavior of heavy Bunker C fuel oil discharging downward from an acutely-angled broken pipeline located on the water surface. The results show that the spill overall profile is… More >

  • Open Access

    ARTICLE

    Calculation of Mass Concrete Temperature Containing Cooling Water Pipe Based on Substructure and Iteration Algorithm

    Heng Zhang1,2, Chao Su2,*, Zhizhong Song1, Zhenzhong Shen1,2, Huiguang Lei3

    CMES-Computer Modeling in Engineering & Sciences, Vol.138, No.1, pp. 813-826, 2024, DOI:10.32604/cmes.2023.030055 - 22 September 2023

    Abstract Mathematical physics equations are often utilized to describe physical phenomena in various fields of science and engineering. One such equation is the Fourier equation, which is a commonly used and effective method for evaluating the effectiveness of temperature control measures for mass concrete. One important measure for temperature control in mass concrete is the use of cooling water pipes. However, the mismatch of grids between large-scale concrete models and small-scale cooling pipe models can result in a significant waste of calculation time when using the finite element method. Moreover, the temperature of the water in… More >

  • Open Access

    ARTICLE

    A Calculation Method of Double Strength Reduction for Layered Slope Based on the Reduction of Water Content Intensity

    Feng Shen1,*, Yang Zhao1, Bingyi Li1, Kai Wu2

    CMES-Computer Modeling in Engineering & Sciences, Vol.138, No.1, pp. 221-243, 2024, DOI:10.32604/cmes.2023.029159 - 22 September 2023

    Abstract The calculation of the factor of safety (FOS) is an important means of slope evaluation. This paper proposed an improved double strength reduction method (DRM) to analyze the safety of layered slopes. The physical properties of different soil layers of the slopes are different, so the single coefficient strength reduction method (SRM) is not enough to reflect the actual critical state of the slopes. Considering that the water content of the soil in the natural state is the main factor for the strength of the soil, the attenuation law of shear strength of clayey soil… More >

  • Open Access

    ARTICLE

    Surgical treatment for BPH refractory to medication: robotic water jet ablation vs. TURP functional outcomes from two FDA clinical trials

    Alexis E. Te1, Christina Sze1, Steven A. Kaplan2, Bilal Chughtai1

    Canadian Journal of Urology, Vol.30, No.1, pp. 11408-11413, 2023

    Abstract Introduction: A common indication for benign prostate hyperplasia (BPH) therapies is failure to improve with medical therapy. However, pivotal Federal Drug Administration (FDA) registered randomized clinical trials (RCTs) for minimally invasive surgical therapies (MISTs) are designed to be compared to either sham or placebo while off medical therapy at baseline, and as an alternative to medical therapy. There are few if any RCTs reporting the MISTS efficacy in patients with true medical therapy failure. We report on the efficacy of robotic water jet ablation therapy (RWT) and TURP in patients who have failed to improve with… More >

  • Open Access

    ARTICLE

    Aquablation versus TURP: 5-year outcomes of the WATER randomized clinical trial for prostate volumes 50-80 mL

    Kussil Oumedjbeur1, Nicholas J. Corsi2, David Bouhadana3, Ahmed Ibrahim4, David-Dan Nguyen5, Imad Matta4, Adel Arezki3, Iman Sadri3, Tawfik Elsherbini6, Naeem Bhojani4, Dean S. Elterman5, Bilal Chughtai7, Brian T. Helfand8, Alexander P. Glaser8, Vincent Misrai9, Steven Kaplan10, Peter Gilling11, Neil Barber12, Mihir Desai13, Gopal H. Badlani14, Alexis E. Te7, Claus G. Roehrborn15, Kevin C. Zorn4

    Canadian Journal of Urology, Vol.30, No.5, pp. 11650-11658, 2023

    Abstract Introduction: To report the 5-year efficacy and safety of Aquablation compared with transurethral resection of the prostate for the management of lower urinary tract symptoms secondary to benign prostatic hyperplasia in men with prostate volumes 50-80 mL.
    Materials and methods: In a large double-blinded, multicenter, and prospective randomized controlled trial, 96 randomized men with 50-80 mL prostates who underwent Aquablation or transurethral prostate resection were prospectively identified for subgroup analysis. Follow up was performed for up to 5 years. The primary efficacy endpoint was the reduction in International Prostate Symptom Score (IPSS) at 6 months. The primary… More >

  • Open Access

    ARTICLE

    Effect of Tetramethylurea (TMU) on Polysulfone Membrane Performance for Atrazine-containing Wastewater Treatment

    NIKITA GUPTA, SARITA KALLA, Z.V.P. MURTHY*

    Journal of Polymer Materials, Vol.40, No.3-4, pp. 317-328, 2023, DOI:10.32381/JPM.2023.40.3-4.12

    Abstract Tetramethylurea (TMU) is a good solvent for organic substances and has received little attention as compared to other solvents. The TMU is a polar solution and is one of the molecules with an amphiphilic character. In the present work, an attempt has been made to use TMU as an additive in the preparation of nanofiltration membranes to improve the hydrophilicity of the membrane. The polysulfone membrane has been modified by incorporating different concentrations of TMU (0, 0.5, and 1 wt.%) in order to check the rejection of atrazine in water. This study aim is to More >

  • Open Access

    ARTICLE

    Synthesis and Characterization of Bisphenol-C Epoxy Crotonate and Its Fiber-Reinforced Composites

    PARSOTAM H. PARSANIA1,*, JIGNESH V. PATEL2, JIGNESH P. PATEL3

    Journal of Polymer Materials, Vol.40, No.3-4, pp. 271-284, 2023, DOI:10.32381/JPM.2023.40.3-4.9

    Abstract Bisphenol-C epoxy crotonate resin was synthesized by reacting 8.09g epoxy resin of bisphenolC, and 2.15g crotonic acid using 25 mL 1,4-dioxane as a solvent, and 1 mL triethylamine as a catalyst at reflux temperature for 1-6 h. Solid epoxy crotonate (ECCR) is highly soluble in common organic solvents. ECCR was characterized by its acid (24.5-1.5 mg KOH/g) and hydroxyl (504.5-678.4 mg KOH/g) values. The structure of ECCR is supported by FTIR and 1 HNMR spectroscopic methods. A DSC endothermic transition at 229o C indicated melting followed by thermal polymerization of ECCR. ECCR is thermally stable… More >

  • Open Access

    PROCEEDINGS

    A Four-Site Water Model for Liquid and Supercooled Water Based on Machine Learning: TIP4P-BGWT

    Jian Wang1,*, Yonggang Zheng1, Hongwu Zhang1, Hongfei Ye1

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.27, No.3, pp. 1-1, 2023, DOI:10.32604/icces.2023.09761

    Abstract Water is the most ubiquitous fluid in nature and widely exists in the micro/nanoconfinement of leafstalks, shale, bones, etc. The complex relation of the properties and behaviours of water to the temperature, pressure and confinement size enhances the difficulty in the accurate simulation, such as the supercooled state of pure water below the freezing point. As a powerful tool, molecular dynamics simulation is adequate for investigating the relevant properties and behaviours. However, accurately calculating the physical properties of liquid and supercooled water is quite challenging by molecular simulations owing to limited model parameters. Machine learning… More >

  • Open Access

    ARTICLE

    Physiological Dynamics and Transcriptomic Analysis of Cut Roses ‘Carola’ Treated with KNO

    Songmei Liu, Yuheng Wu, Hongmei Li, Dongli Cai, Huiling Liang, Changchun Ye, Shenggen He*

    Phyton-International Journal of Experimental Botany, Vol.92, No.12, pp. 3267-3290, 2023, DOI:10.32604/phyton.2023.045453 - 28 December 2023

    Abstract

    The consumption of cut roses (Rosa hybrida) has always ranked first in the world. However, it is vulnerable to rapid petal and leaf wilting due to leaf stomatal water loss, which seriously affects its ornamental quality and economic value. Stomatal movement, a key in plant physiological processes, is influenced by potassium and nitrate. Advancing comprehension of its physiological and molecular mechanism holds promise for preserving the freshness of cut roses. This study observed the impacts of different concentrations of KNO3 vase treatments on stomatal opening and water loss in cut rose ‘Carola’ leaves, as well as

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