Showing 601 - 620 results of 748 for search '"groundwater"', query time: 0.05s Refine Results
  1. 601

    Variations on Reservoir Parameters of Oil Shale Deposits under Periodic Freeze-Thaw Cycles: Laboratory Tests by Rui-heng Li, Zhong-guang Sun, Jiang-fu He, Zhi-wei Liao, Lei Li, Fang Qian

    Published 2021-01-01
    “…Thereby, the strength and permeability of the frozen wall are extremely critical to reduce the harmful chemicals leaching into the groundwater. However, the permeability and strength of the frozen wall can be influenced by periodic freeze-thaw cycles. …”
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    Article
  2. 602

    Assessment of Physicochemical Properties and Heavy Metals in Borehole Water Used For Drinking In Okada Town, Edo State, Nigeria by W.A. Raji, C.E. Anih, P.O. Obeta

    Published 2020-01-01
    “…The assessment of physicochemical properties and heavy metal contents of groundwater (borehole) quality were evaluated. Ten water samples labeled A-J were collected from boreholes at different locations in Okada community and subjected to laboratory test to determine the pH, biological oxygen demand (BOD), chemical oxygen demand (COD),  dissolved oxygen (DO), hardness, turbidity, total organic carbon, total dissolved solids, electrical conductivity, and concentration of phosphates, nitrates, lead, sodium, calcium and chloride. …”
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    Article
  3. 603

    Methodology for Analyzing the Actual Technical Condition of Downhole Pumping Equipment by V. V. Ivashechkin, V. I. Krytskaya, V. N. Anufriev, O. A. Avrutin

    Published 2021-06-01
    “…The characteristics of submersible pumps are captured at the factory on special stands. At large group groundwater intakes, wells are equipped with an automated control system that allows testing the pump at the workplace and promptly making a decision on its replacement if the pressure characteristic is unacceptably reduced. …”
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    Article
  4. 604

    Sustainable solid soap production using recycled cooking oil with ecoenzyme and lemongrass extract by Zona Octarya, Elvi Yenti, Lisa Utami, Yusbarina

    Published 2025-01-01
    “… Background: Improper disposal of used cooking oil poses significant environmental challenges, including groundwater contamination and harm to aquatic ecosystems. …”
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    Article
  5. 605

    Performance Study of the Direct-Coupled Photovoltaic Water Pumping System for the Rural-Isolated Agricultural Region in Iraq by Mahmood hussein salman, Adel A. Obed, Ahmed J. Abid

    Published 2021-03-01
    “…The article presents the significant design aspect for an optimal system, such as the groundwater aquifer depth, installation aspect, cost, and irrigation efficiency. …”
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    Article
  6. 606

    Carbon Dioxide Emissions as Affected by Alternative Long-Term Irrigation and Tillage Management Practices in the Lower Mississippi River Valley by S. F. Smith, K. R. Brye

    Published 2014-01-01
    “…Ensuring the sustainability of cultivated soils is an ever-increasing priority for producers in the Lower Mississippi River Valley (LMRV). As groundwater sources become depleted and environmental regulations become more strict, producers will look to alternative management practices that will ensure the sustainability and cost-effectiveness of their production systems. …”
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    Article
  7. 607

    Hydrogeochemical Assessment and Identification of Controlling Factors of Chemical Composition of Spring Waters in Alashtar Plain, Lorestan Province by Vahab Amiri

    Published 2021-12-01
    “…In this study, the hydrogeochemical status of groundwater resources is evaluated using chemical analysis of 346 samples supplied from 10 springs. …”
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    Article
  8. 608

    Physical Modelling of Rainfall-Induced Sandy and Clay-Like Slope Failures by Martina Vivoda Prodan, Josip Peranić, Sara Pajalić, Željko Arbanas

    Published 2023-01-01
    “…The test results have shown that within the slopes built from clean sand failure occurs due to groundwater level rising at the slope foot and further retrogressive failure towards the top of the slope, while in the slopes built from sand-kaolin mixtures, instabilities occur in the form of cracks in unsaturated conditions and are the result of matric suction dissipation due to rainfall infiltration.…”
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    Article
  9. 609

    Assessment of Physicochemical Properties and Heavy Metals in Borehole Water Used For Drinking In Okada Town, Edo State, Nigeria by W.A. Raji, C.E. Anih, P.O. Obeta

    Published 2020-01-01
    “…The assessment of physicochemical properties and heavy metal contents of groundwater (borehole) quality were evaluated. Ten water samples labeled A-J were collected from boreholes at different locations in Okada community and subjected to laboratory test to determine the pH, biological oxygen demand (BOD), chemical oxygen demand (COD),  dissolved oxygen (DO), hardness, turbidity, total organic carbon, total dissolved solids, electrical conductivity, and concentration of phosphates, nitrates, lead, sodium, calcium and chloride. …”
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    Article
  10. 610

    Research on the coupling control mechanism of yielding-bolt-grouting in deep water-enriched roadway and its engineering application by Jihua Zhang, Qiao Rui, Lianguo Wang, Yushun Yang, Jiarui Chen, Wei Shen, Chengwu Wang, Weili Liu

    Published 2025-01-01
    “…Groundwater seepage can easily cause large deformation and fracture instability of the surrounding rock in deep roadways, and the coupling support of “yield-bolt-grouting” can effectively control the occurrence of such accidents. …”
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    Article
  11. 611

    Genetic Predisposition for Dermal Problems in Hexavalent Chromium Exposed Population by Priti Sharma, Vipin Bihari, Sudhir K. Agarwal, Sudhir K. Goel

    Published 2012-01-01
    “…The health status of population was examined from the areas of Kanpur (India) having the elevated hexavalent chromium levels in groundwater. Blood samples were collected for DNA isolation to conduct polymorphic determination of genes, namely: NQO1 (C609T), hOGG1 (C1245G), GSTT1, and GSTM1 (deletion). …”
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    Article
  12. 612

    Impacts of Water Consumption in the Haihe Plain on the Climate of the Taihang Mountains, North China by Jing Zou, Chesheng Zhan, Ruxin Zhao, Peihua Qin, Tong Hu, Feiyu Wang

    Published 2018-01-01
    “…The results indicate that water exploitation and consumption in the Haihe Plain causes wetting and cooling of the local land surface and rapid increases in the depth of the groundwater table. These wetting and cooling effects increase atmospheric moisture, which is transported to surrounding areas, including the Taihang Mountains to the west. …”
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    Article
  13. 613

    Treatment of Comprehensive Wastewater from Chemical and Pharmaceutical Parks by Fly Ash-Coated Iron Electrode Electrocoagulation by Huajing Zhu, Zeli Chen

    Published 2022-01-01
    “…The experiment research of iron electrode electrocoagulation was carried out on actual groundwater, aiming to provide data and theoretical support for the utilization of fly ash and the optimization of comprehensive wastewater treatment technology. …”
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    Article
  14. 614

    Design Considerations for Borehole Thermal Energy Storage (BTES): A Review with Emphasis on Convective Heat Transfer by Helge Skarphagen, David Banks, Bjørn S. Frengstad, Harald Gether

    Published 2019-01-01
    “…Storage efficiency may be dramatically reduced in cases where (i) natural groundwater advection through the BTES removes stored heat, (ii) extensive free convection cells (thermosiphons) are allowed to form, and (iii) poor BTES design results in a high surface area/volume ratio of the array shape, allowing high conductive heat losses. …”
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    Article
  15. 615

    Formation of the River Water Chemistry in the Middle Section of Dousitu River, China by Qian Hui, Li Peiyue, Ding Jia, Yang Chao, Zhang Xuedi

    Published 2011-01-01
    “…On basis of hydrogeology of the study area, the characteristics of chemistry of river water and groundwater were analyzed. Analysis results of three river water samples (B3, B4 and B5) collected in the middle section of Dousitu River show the TDS increases from B3 to B4 and decreases from B4 to B5. …”
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    Article
  16. 616

    Fractal Statistical Study on the Strength of Jointed Rock Mass by Fangtao Li, Zhiping Hu, Xiang Ren, Jiakuan Ma, Xuexu An, Yunxin Zheng, Yonghui Zhang

    Published 2022-01-01
    “…Reasonable drainage should be carried out according to the different failure modes when constructing tunnels with abundant groundwater, and certain drainage or water plugging construction schemes are not necessarily applicable to all cases. …”
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    Article
  17. 617

    Simulation of the Hydrological Components of Dez River Basin by the classification of Land Use Categories Using SUFI-2 Algorithm by Elaheh Asgari, Mohammad Baaghideh, Majid Hosseini, Alireza Entezari, Asghar Kamyar

    Published 2021-12-01
    “…The forest use change to Agricultural lands and pasture will change the hydrological parameters of the basin, and the result of these changes will lead to the increase in the surface runoff, the reduction of nutrition of groundwater resources and the reduction of river basin water. …”
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    Article
  18. 618

    Study of cyclophosphamide removal by using sodium hypochlorite: A case study on hospitals sewage by Elham Asrari, Afsane Saemian

    Published 2024-11-01
    “…These compounds are not removed during wastewater treatment with sufficient efficiency, they could be found in the groundwater. Oxidation is an efficient method for removing neoplastic drugs such as cyclophosphamide. …”
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    Article
  19. 619

    Determination of the Percentage of Iron in River Rwabakazi From Source of Tributaries Around Kyase Iron Factory in Kabale Town. by Twesigomwe, Vicent

    Published 2025
    “…The recommended iron concentration in river water is 0.1-10 mg/l, 0.1-50 mg/l in groundwater, 0.01-0.1 mg/l in seawater, and 0.3-0.5 mg/l in drinking water according to WHO, EP, EPA, and IWBA. …”
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    Thesis
  20. 620

    Field experimental and numerical study on the formation and frost heave development of frozen soil under rapid freezing by Fuchen Teng, Yong Cheng Sie, Chihping Kuo

    Published 2025-07-01
    “…Numerical simulations revealed discrepancies between the simulated and measured data because the soil at depths of 4–7 m was not completely frozen due to the presence of soil and groundwater conditions that were resistant to freezing. …”
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    Article