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  • Open Access

    PROCEEDINGS

    Investigation on Microstructural Evolution and Corrosion Resistance Improvement of E690 Steel via Underwater Laser Directed Energy Deposition

    Mingzhi Chen1, Zhandong Wang2, Guifang Sun1,*

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.29, No.4, pp. 1-1, 2024, DOI:10.32604/icces.2024.012203

    Abstract Marine environments pose severe corrosion challenges to underwater equipment, thereby leading to significant risks and demanding immediate in-situ restoration. Here we developed an underwater laser directed energy deposition (UDMD) technique to repair the E690 steel and enhance its corrosion resistance. Systematic investigations about the underwater pressure (P) and 316L stainless steel (SS316L) coatings on the microstructure, mechanical properties, and corrosion resistance of the repaired E690 steel were conducted. Results show that water cooling can refine grain, promote the formation of lath martensite, and increase dislocation density. No obvious relationship between the pressure and microstructure evolution… More >

  • Open Access

    PROCEEDINGS

    Influence of Stress and Hydraulic History on Water Retention Curveof Natural Loessin the Suction Range of 0-367.5MPa

    Tiangang Lan1, Mengyuan Ma1, Shifeng Lu1, Ling Xu1,*

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.29, No.1, pp. 1-1, 2024, DOI:10.32604/icces.2024.010867

    Abstract Natural loess is a kind of kaolin wind-deposited soil.Thedifferent layers of loess experienced different overburden pressures and wetting-drying cycles, resulting in different water retention behaviors.The axis translation technique and the vapor equilibrium technique to determine the water retention behaviorof the three different sediment depth natural loess during drying and wettingprocess. In addition, the microstructure evolution experienced wetting and drying cycles also characterized by mercury intrusion porosimetry. The saturation and air entry value increased with the sediment depth increased because deeper sediment depth means lower initial void ratio. Thewaterretentioncurveshowsthatthereisalmost nohysteresis observed around the naturalsuction,and in relatively… More >

  • Open Access

    ARTICLE

    Effect of Selective Laser Sintering Polyamide-12 Powder as a Filler in Glass Fiber Reinforced Epoxy Composites

    Ravikumar Karthikeyan, Subbiah Rajkumar*, Balasundaram Ravi

    Journal of Polymer Materials, Vol.41, No.3, pp. 131-141, 2024, DOI:10.32604/jpm.2024.055989 - 30 September 2024

    Abstract In this study, the Polyamide-12 (PA-12) powdered material in the Selective Laser Sintering (SLS) process has been incorporated as the filler in the composite material to enhance its properties. The PA-12 powder has been made into a form of filament and is primarily used in the Fused Deposition Modelling (FDM) process. The PA-12 has been used with epoxy resin and glass fiber with different proportions. The characterization of materials, including the validation of the presence of PA-12 filler with epoxy, has been evidenced using Fourier Transform Infrared Spectroscopy (FTIR), Differential Scanning Calorimetry (DSC), and Thermogravimetric More >

  • Open Access

    REVIEW

    Climate Change and Aquatic Phytoremediation of Contaminants: Exploring the Future of Contaminant Removal

    Marcelo Pedrosa Gomes*

    Phyton-International Journal of Experimental Botany, Vol.93, No.9, pp. 2127-2147, 2024, DOI:10.32604/phyton.2024.056360 - 30 September 2024

    Abstract Climate change, driven by anthropogenic activities, profoundly impacts ecosystems worldwide, particularly aquatic environments. This review explores the multifaceted effects of climate change on the phytoremediation capabilities of aquatic plants, focusing on the physiological responses to key environmental factors such as temperature, carbone dioxide (CO2) and ozone (O3) levels, pH, salinity, and light intensity. As global temperatures rise, moderate increases can enhance photosynthesis and biomass production, boosting the plants’ ability to absorb and detoxify contaminants, such as metals, pharmaceuticals, and nutrients. However, extreme temperatures and salinity levels impose stress, disrupting metabolic processes and reducing phytoremediation efficiency. Elevated CO2More >

  • Open Access

    ARTICLE

    Salicylic Acid Improved the Growth of Soybean Seedlings by Regulating Water Status and Plant Pigments and Limiting Oxidative Injury under Salinity Stress

    Shahin Imran1,2,*, Md. Asif Mahamud3, Newton Chandra Paul1, Prosenjit Sarker4, Md. Tahjib-Ul-Arif5, Nazmul Islam5, Mohammad Saidur Rhaman6, Saleh H. Salmen7, Sulaiman Ali Alharbi7, Mohammad Javed Ansari8, Mohammed Ali Alshehri9, Akbar Hossain10,*

    Phyton-International Journal of Experimental Botany, Vol.93, No.9, pp. 2251-2266, 2024, DOI:10.32604/phyton.2024.055736 - 30 September 2024

    Abstract Soybean (Glycine max) is a potential legume crop, but it cannot thrive in mild salinity. Salicylic acid (SA) is a renowned plant growth hormone that improves tolerance to saline conditions. Hence, the study was performed to understand the functions of priming seeds and supplementation of SA in modulating salt tolerance in soybean seedlings. When exposed to salt stress, soybean seedlings showed considerably higher contents of hydrogen peroxide (H2O2) and malondialdehyde (MDA) while having decreased germination and growth factors, water contents, and photosynthetic pigments. The germination rate, final germination percentage, germination index, germination energy, and seed vigor index… More >

  • Open Access

    ARTICLE

    Arbuscular Mycorrhizal Fungi Improve Drought Tolerance of Quinoa Grown in Compost-Amended Soils by Altering Primary and Secondary Metabolite Levels

    Wissal Benaffari1,2,3, Fatima-Ezzahra Soussani1,2,4, Abderrahim Boutasknit1,2,5, Salma Toubali1,2,3, Abir Ben Hassine3, Hala Ben Ahmed3, Rachid Lahlali7,*, Abdelilah Meddich1,2,6,*

    Phyton-International Journal of Experimental Botany, Vol.93, No.9, pp. 2285-2302, 2024, DOI:10.32604/phyton.2024.055052 - 30 September 2024

    Abstract Quinoa (Chenopodium quinoa) has recently gained popularity as a pseudo-cereal cultivated in various countries due to the nutritional and antioxidant benefits of its seeds, and its capacity to persist in water-stressed environments. Our study aimed to assess the effects of native arbuscular mycorrhizal fungi (AMF) and local organic amendments on the metabolic responses and antioxidant activity of quinoa seeds under water-stressed conditions. To this end, quinoa plants were grown in soils inoculated with an indigenous mycorrhizal consortium AMF and amended with two types of compost from horse manure (HM) and green waste (GW) under two water… More >

  • Open Access

    ARTICLE

    Removal of Dye Using Lignin-Based Biochar/Poly(ester amide urethane) Nanocomposites from Contaminated Wastewater

    Annesha Kar1, Niranjan Karak1,2,*

    Journal of Renewable Materials, Vol.12, No.9, pp. 1507-1540, 2024, DOI:10.32604/jrm.2024.052220 - 25 September 2024

    Abstract The pursuit of incorporating eco-friendly reinforcing agents in polymer composites has accentuated the exploration of various natural biomass-derived materials. The burgeoning environmental crisis spurred by the discharge of synthetic dyes into wastewater has catalyzed the search for effective and sustainable treatment technologies. Among the various sorbent materials explored, biochar, being renewable, has gained prominence due to its excellent adsorption properties and environmental sustainability. It has also emerged as a focal point for its potential to replace other conventional reinforcing agents, viz., fumed silica, aluminum oxide, treated clays, etc. This study introduces a novel class of… More > Graphic Abstract

    Removal of Dye Using Lignin-Based Biochar/Poly(ester amide urethane) Nanocomposites from Contaminated Wastewater

  • Open Access

    ARTICLE

    Delineating Groundwater Potential Zones Using Geospatial and Analytical Hierarchy Process Techniques in the Upper Omo-Gibe Basin, Ethiopia

    Yonas Hagos1,2,*, Zelalem Bedaso1, Mulugeta Kebede3

    Revue Internationale de Géomatique, Vol.33, pp. 399-425, 2024, DOI:10.32604/rig.2024.053975 - 27 September 2024

    Abstract In regions with unpredictable rainfall and limited water supply, it’s crucial to pinpoint areas with high potential for groundwater and find the best spots for groundwater resource development. This study utilizes the Analytic Hierarchy Process (AHP) in combination with Geographic Information Systems (GIS) to evaluate the potential groundwater zones in the Gombora watershed within the Omo Gibe basin in Ethiopia. Combining these two tools provided a detailed map showing potential groundwater areas. These zones are determined based on various thematic maps containing information about geology, soil texture, lineament density, slope, land use, and drainage density.… More >

  • Open Access

    ARTICLE

    Study on Optimal Water Control Methods for Horizontal Wells in Bottom Water Clastic Rock Reservoirs

    Xianghua Liu1, Hai Song1, Lu Zhao1, Yan Zheng1, Neng Yang2, Dongling Qiu2,*

    FDMP-Fluid Dynamics & Materials Processing, Vol.20, No.10, pp. 2377-2392, 2024, DOI:10.32604/fdmp.2024.051418 - 23 September 2024

    Abstract The segmented water control technology for bottom water reservoirs can effectively delay the entry of bottom water and adjust the production profile. To clarify the impact of different methods on horizontal well production with different reservoir conditions and to provide theoretical support for the scientific selection of methods for bottom water reservoirs, a numerical simulation method is presented in this study, which is able to deal with wellbore reservoir coupling under screen tube, perforation, and ICD (Inflow Control Device) completion. Assuming the geological characteristics of the bottom-water conglomerate reservoir in the Triassic Formation of the… More >

  • Open Access

    ARTICLE

    Ghost-YOLO v8: An Attention-Guided Enhanced Small Target Detection Algorithm for Floating Litter on Water Surfaces

    Zhongmin Huangfu, Shuqing Li*, Luoheng Yan

    CMC-Computers, Materials & Continua, Vol.80, No.3, pp. 3713-3731, 2024, DOI:10.32604/cmc.2024.054188 - 12 September 2024

    Abstract Addressing the challenges in detecting surface floating litter in artificial lakes, including complex environments, uneven illumination, and susceptibility to noise and weather, this paper proposes an efficient and lightweight Ghost-YOLO (You Only Look Once) v8 algorithm. The algorithm integrates advanced attention mechanisms and a small-target detection head to significantly enhance detection performance and efficiency. Firstly, an SE (Squeeze-and-Excitation) mechanism is incorporated into the backbone network to fortify the extraction of resilient features and precise target localization. This mechanism models feature channel dependencies, enabling adaptive adjustment of channel importance, thereby improving recognition of floating litter targets.… More >

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