Showing 841 - 860 results of 929 for search '"clay"', query time: 0.05s Refine Results
  1. 841

    Land Use and Land Cover Dynamics and Properties of Soils under Different Land Uses in the Tejibara Watershed, Ethiopia by Sabiela Fekad Fentie, Kehali Jembere, Endalkachew Fekadu, Dessale Wasie

    Published 2020-01-01
    “…The image analysis results for all of the years studied show that cultivated lands have increased in area at the expense of forest and grazing lands. Silt content, clay content, AP, and pH were significantly affected by land use as the main effect while the interaction effects of soil depth and land use were significant for total N and OM only. …”
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    Article
  2. 842

    Preparation of Cathode-Anode Integrated Ceramic Filler and Application in a Coupled ME-EGSB-SBR System for Chlortetracycline Industrial Wastewater Systematic Treatment by Yuanfeng Qi, Suqing Wu, Fei Xi, Shengbing He, Chunzhen Fan, Bibo Dai, Jungchen Huang, Meng Meng, Xiangguo Zhu, Lei Wang

    Published 2016-01-01
    “…Conventional biological treatments could not effectively treat the CTC industrial wastewater and few studies have been focused on the wastewater systematic treatment. Firstly, 40.0 wt% of clay, 30.0 wt% of dewatered sewage sludge (DSS), and 30.0 wt% of scrap iron (SI) were added to sinter the new media (cathode-anode integrated ceramic filler, CAICF). …”
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    Article
  3. 843

    Pore Fluid Evolution Influenced by Volcanic Activities and Related Diagenetic Processes in a Rift Basin: Evidence from the Paleogene Medium-Deep Reservoirs of Huanghekou Sag, Bohai... by Zhongheng Sun, Hongtao Zhu, Changgui Xu, Xianghua Yang, Xiaofeng Du, Qingbin Wang, Jinyang Qiao

    Published 2017-01-01
    “…During the deposition of E3d3, influx of terrestrial freshwater and alteration of ferromagnesian-rich pore water result in the formation of mixing aqueous medium environment through volcanic eruption dormancy causing zeolite dissolution, clay mineral transformation, and K-feldspar albitization. …”
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    Article
  4. 844

    Study on Mechanical Properties of Gravelly Sand under Different Stress Paths by Dongjie Zhang, Fei Luo, Zhanyuan Zhu, Jiaming Liu, Jing Li, Bailin Li, Tianlang Xue

    Published 2021-01-01
    “…To describe the strain hardening and strain softening characteristics of gravelly sand in different stress paths, a new dilatancy equation was obtained by introducing the characteristic state stress ratio Mc into the dilatancy equation of the modified Cam-Clay model based on the state-dependent dilatancy theory. …”
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    Article
  5. 845

    Solving geocryology problems based on generalized Fourier theory for temperature waves in half-space by Anatoliy M. Afanasyev, Yulia S. Bakhracheva

    Published 2024-12-01
    “…The moisture retention field has the same structure. For a material with clay characteristics and with specific values of all the process-defining quantities for each of the waves, the depth of penetration and the delay time of vibrations at a given depth relative to fluctuations in air temperature are calculated, and the results obtained are compared with experimental data. …”
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  6. 846

    APLIKASI METODE GEOLISTRIK DALAM PENDUGAAN KETEBALAN LAPISAN TANAH GAMBUT (STUDI KASUS: DAERAH DI SEKITAR JL. PERDANA, KOTA PONTIANAK) by Zulfian Zulfian

    Published 2022-05-01
    “…After the peat layer, starting from a depth of 3 m to 10 m, it is assumed to be a layer of clay. Information on the thickness of the peat soil layer can be used for development planning, especially residential areas in the process of building houses and buildings in Pontianak City.   …”
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    Article
  7. 847

    Integration of NMR and NMRC in the Investigation of the Pore Size Distribution of Tight Sandstone Reservoirs: A Case Study in the Upper Paleozoic of Dongpu Depression by Ning Zhu, Suping Yao, Xuejun Wang, Binfeng Xia, Yunxian Zhang

    Published 2021-01-01
    “…The results showed that the tight sandstone reservoirs consisted of intergranular, intragranular, and intercrystalline (clay mineral) pores. The full PSD intelligibly showed pore structure characteristics of four different types of reservoirs, with pore sizes ranging from 2 nm to dozens of microns. …”
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    Article
  8. 848

    Biochar Amendment as a Mitigation Against Freezing–Thawing Effects on Soil Hydraulic Properties by Zhongkui Chen, Chitipat Intraravimonmata, Viroon Kamchoom, Rui Chen, Natdanai Sinsamutpadung

    Published 2025-01-01
    “…The findings indicate that freeze–thaw cycles predominantly affect clay’s ability to retain water and control hydraulic conductivity by generating macropores and fissures; with a notable increase in conductivity at high matric potentials. …”
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  9. 849

    Strength, Hydraulic, and Microstructural Characteristics of Expansive Soils Incorporating Marble Dust and Rice Husk Ash by Fazal E. Jalal, Sultani Mulk, Shazim Ali Memon, Babak Jamhiri, Ahsan Naseem

    Published 2021-01-01
    “…These problematic soils contain various swelling clay minerals that are unsuitable for engineering requirements. …”
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    Article
  10. 850

    Effect of Sand Mining on River System: A Case Study of River Rwabakazi Kabale Municipality.. by Kamagara, Denis

    Published 2024
    “…These included promoting and incentivizing the use of less environmentally damaging sand mining technologies, implementing stricter regulations on sand mining activities within the river, developing and implementing river restoration plans for the affected areas, and encouraging sand miners to shift to alternative sources of clay outside the river. The study findings concluded by showing that there was a significant positive relationship between the affected parts and intact part of River Rwabakazi (p = < 0.01, rho= .530**) in Kabale municipality indicating that as certain areas of the river are impacted or disturbed, there is a corresponding effect on the remaining intact portions of the river. …”
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    Thesis
  11. 851

    Geological, alteration, mineralogy and geochemical studies of the Copper deposit in the Kalatehno prospect area, northwest of Gonabad (Khorasan Razavi province) by Sedigheh Zirjanizadeh, Roohollah Miri Bydokhti

    Published 2024-10-01
    “…The groundmass comprises microcrystalline quartz and alkali feldspars, and the alkali feldspars are altered to clay minerals. Subvolcanic outcrops as stocks in different parts of the area. …”
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  12. 852

    Green Production of Indolylquinones, Derivatives of Perezone, and Related Molecules, Promising Antineoplastic Compounds by René Gerardo Escobedo-González, Héctor Pérez Martínez, Ma. Inés Nicolás-Vázquez, Joel Martínez, Gabriela Gómez, Juan Nava Serrano, Vladimir Carranza Téllez, C. L. Vargas-Requena, René Miranda Ruvalcaba

    Published 2016-01-01
    “…A green approach to produce the indolyl derivatives from four natural quinones (perezone, isoperezone, menadione, and plumbagin) was performed; in this regard, a comparative study was accomplished among the typical mantle heating and three nonconventional activating modes of reaction (microwave, near-infrared, and high speed ball milling or tribochemical), under solventless conditions and using bentonitic clay as a catalyst. In addition, the tribochemical production of isoperezone from perezone is also commented on. …”
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  13. 853

    Carbon sequestration rate in sediment mangroves from natural and rehabilitated mangroves by D. Ariyanto, D. Pringgenies

    Published 2024-10-01
    “…The principal component analysis results revealed that organic carbon, carbon dioxide equivalent, carbon stock, and carbon sequestration had positive correlation characteristics influenced by salinity, silt, and clay, while negative correlation characteristics were affected by temperature, total dissolved solids, and sand. …”
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  14. 854

    Influence of Migration and Plugging of Nanoparticles on Coal Permeability in Coal Reservoirs by Xiaopeng Zhai, Weihong Chen, Yun Xu, Yishan Lou, Shuhong Xu, Lihui Zheng, Zhiyang Guo, Yuanchang Chen, Hongyong Hao, Jianfang Jiang

    Published 2021-01-01
    “…The instability caused by the expansion of coal clay mineral particles promotes the dispersion and shedding of particles, and the migration of particles is accelerated under the shear stress of the working fluid. …”
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  15. 855

    Study of the Compressive Strength of Mortars as a Function of Material Composition, Workability, and Specimen Geometry by M. T. Marvila, A. R. G. Azevedo, J. Alexandre, C. M. F. Vieira, E. B. Zanelato, G. C. G. Delaqua, G. C. Xavier, S. N. Monteiro

    Published 2020-01-01
    “…For this purpose, specimens were prepared for six types of mortars: two conventional mortars in the proportions of 1 : 1 : 6 and 1 : 2 : 9 of cement, hydrated lime, and sand, respectively, two with clay replacing lime, and two with marble waste in place of lime. …”
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    Article
  16. 856

    Quantitative Characterization for the Micronanopore Structures of Terrestrial Shales with Different Lithofacies Types: A Case Study of the Jurassic Lianggaoshan Formation in the So... by Weiwei Liu, Kun Zhang, Qianwen Li, Zhanhai Yu, Sihong Cheng, Jiayi Liu, Pei Liu, Fengli Han, Liangyi Tang, Zhengwei Li, Xuejiao Yuan, Yiming Yang, Yao Zeng, Chen Zhang

    Published 2021-01-01
    “…The following conclusions were drawn: for organic-rich mixed shales and organic-rich clay shales, the TOC content is the highest; the pore volume, which is primarily provided by macropores and specific surface area, which is provided by mesopores, was the largest, thus providing more space for shale oil and gas reservation. …”
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  17. 857

    The Growth and Yield of Shallots and Melons Based on the Interseasonal Windbreaks Cropping System in Anticipation of Climate Change by Saparso, Sudarmaji Arief, Bachtiar Musthafa Muhammad, Tamad

    Published 2025-01-01
    “…In addition, it is necessary to add soil amendments such as manure and clay to improve soil structure. The purpose of this study was to distinguish the effect of season types, windbreak types, and types of plants used on the growth and yield of melon and shallot plants on coastal land, and to determine the interaction between season types, windbreak types, and plant types on growth and yields of melon and shallot. …”
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    Article
  18. 858

    Marine Shale Gas Occurrence and Its Influencing Factors: A Case Study from the Wufeng-Longmaxi Formation, Northwestern Guizhou, China by Taotao Cao, Hu Liu, Anyang Pan, Mo Deng, Qinggu Cao, Ye Yu, Yanran Huang, Zhenghui Xiao

    Published 2022-01-01
    “…Shale gas content is positively correlated with micropore volume, mesopore volume and TOC content but negatively correlated with macropore volume and clay mineral content, indicating that methane is preferentially stored in micropores (<2 nm) and mesopores (2–50 nm) related to OMs. …”
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  19. 859

    Study on the Genetic Differences in Reservoir Characteristics Based on the Bidirectional Provenance of the Yanchang Formation in the Jiyuan Area, Ordos Basin, China by Qiang Tong, Zhaohui Xia, Jixin Huang, Junchang Wu, Yusheng Wang, Zheng Meng, Chaoqian Zhang

    Published 2022-01-01
    “…The results show that, first, due to the different provenance, compared with the YPA, the reservoir pore space in the APA is better developed and the physical properties are better. Second, the clay mineral content and diagenesis are more important causes of reservoir differentiation, and the reservoir pores in the YPA are more affected by kaolinite and chlorite filling than those in the APA. …”
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    Article
  20. 860

    Optimizing water-use efficiency under elevated CO₂: A meta-analysis of crop type, soil modulation, and enrichment methods by Ali Mokhtar, Hongming He, Samar Attaher, Ali Salem, Muneer Alam

    Published 2025-03-01
    “…Key findings reveal that: (1) C₃ crops, such as potato and tomato, show significantly greater increases in WUE compared to C₄ crops like maize, with effect sizes of 13.96 and 7.02 for plant-level WUE (WUEₚ), suggesting that C₃ crops may be more advantageous in water-limited environments due to reduced photorespiration under eCO₂; (2) soil type substantially modulates WUE responses, with clay soils, due to their high water-holding capacity, demonstrating the highest WUE enhancements (effect sizes of 7.87 for WUEₚ and 12.54 for yield WUE, WUEᵧ), while sandy soils, characterized by rapid drainage, showed limited improvements; and (3) greenhouse and growth chamber studies displayed the highest WUE improvements, while FACE experiments, which better replicate real-world conditions, indicated smaller WUE increases due to environmental variability, underscoring the need for a hybrid approach that merges controlled data with field insights to develop practical, water-efficient agricultural strategies. …”
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