Showing 561 - 580 results of 929 for search '"clay"', query time: 0.04s Refine Results
  1. 561

    Physicochemical Characteristics and Levels of Cu, Fe, Pb, Mn and Zn in Sediments of Agbarho River, Delta State, Nigeria by O. O. Okome, D. Okoro

    Published 2025-02-01
    “…The ranges of results obtained were; pH = 4.0 – 5.3, EC = 10.00 – 246.00μS/cm, OC = 0.36 – 62.72 LOI, N = 0.006 – 0.590 %, Clay = 6 – 14 %, Sand = 76 – 92 %, Silt = 2 – 11 %, Cu = 2.33 – 5.19 mg/kg, Zn = 4.71 – 81.78 mg/kg, Fe = 57.18 – 385.45 mg/kg, Mn = 1.60 – 42.43 mg/kg, Pb = 0.19 – 0.63 mg/kg. …”
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  2. 562

    Relationship between Some Properties of Marls and Different Types of Erosions in Talkhe-rood Watershed by Salmasi Ramin, Abbas Ahmadi

    Published 2012-07-01
    “…These properties were: pH, EC, CEC, Lime, gypsum and OC contents, SAR, Na, K, Cl and Ca + Mg and clay, silt and sand percentages. These data were interpreted by ANOVA and mean comparisons analyze (SPSS software Ver. 11.5) methods. …”
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  3. 563

    QELBY®-Induced Enhancement of Exclusion Zone Buildup and Seed Germination by Abha Sharma, Dario Toso, Kurt Kung, Gun-Woong Bahng, Gerald H. Pollack

    Published 2017-01-01
    “…A hydrophilic powder, QELBY, from the feldspar family of clay minerals was investigated for its ability to form structured or exclusion-zone (EZ) water. …”
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  4. 564

    Analysis of Influence Factors of Pore Water Pressure Change in Frozen Soil by Kun Zhang, Lianhai Zhang

    Published 2021-01-01
    “…In this article, changes of pore water pressures (PWP) in silty clay subjected to freezing and thawing were measured under an open-system condition. …”
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  5. 565

    Supports d’écriture et gestion de production au quotidien dans le nord de la Gaule (Nerviens, Atrébates) : estampilles et graffiti sur briques et sur tuiles by Christine Hoët-Van Cauwenberghe

    Published 2013-12-01
    “…As to graffiti, these short texts carved in clay, they prove that handwriting was used on a daily basis in the brick and tile workshops in northern Gaul. …”
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  6. 566

    Development of low-cost iron mixed porous pellet adsorbent by mixture design approach and its application for arsenate and arsenite adsorption from water by Borano Te, Boonchai Wichitsathian, Chatpet Yossapol, Watcharapol Wonglertarak

    Published 2018-02-01
    “…In this study, natural clay, iron oxide, and iron powder were combined to develop low-cost iron mixed porous pellet adsorbent for arsenate and arsenite removal from aqueous solution in batch experiments. …”
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  7. 567

    A Route Well Travelled. The archaeology of the A14 Huntingdon to Cambridge Road Improvement Scheme by Emma West, Claire Christie, Debora Moretti, Owain Scholma-Mason, Alex Smith

    Published 2024-12-01
    “…Excavations over 232ha took place between 2016 and 2022 from the Great Ouse Valley near Huntingdon in the west to the higher clay lands towards Cambridge in the east. They involved a huge collaborative team led by MOLA-Headland Infrastructure and revealed groundbreaking archaeology of all periods, from mammoths to medieval villages. …”
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  8. 568

    STATUS OF SOIL QUALITY ON RECLAIMED LAND IN AN ARID REGION by Ahmed Asmoay, Ibrahim Mousa, Ahmed Mohamed

    Published 2023-08-01
    “…Most of the soil samples had a clay texture, with varying mineral compositions. …”
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  9. 569

    Amazonian Metakaolin Reactivity for Geopolymer Synthesis by Ruy A. Sá Ribeiro, Marilene G. Sá Ribeiro, Gregory P. Kutyla, Waltraud M. Kriven

    Published 2019-01-01
    “…To determine the viability of using a local resource for geopolymer synthesis, geopolymers were synthesized using metakaolin made from clay mined in the Amazonian region of Brazil. Samples were made with mixed potassium-sodium and pure sodium metakaolin-based geopolymer. …”
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  10. 570

    Seepage Property of Crushed Mudstone Rock in Collapse Column by Bo-Yang Zhang, Zhi-Bin Lin

    Published 2020-01-01
    “…The karst collapse column composed of crushed rocks and fine argillaceous or clay particles is easy to form the fissure channels between the coal seam working face and the confined limestone aquifer under mining and causes water inrush disasters with the loss of underground water resource, economic losses, and casualties. …”
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  11. 571

    Environmental and Ecological Risks Posed by Sediment Heavy Metals in Reservoirs: A Preliminary Study from Northwest Türkiye by Murat Tekiner, Mehmet Parlak, Tülay Tunçay

    Published 2025-01-01
    “…Bayramiç reservoir had greater sediment Al, Cu, Fe, Mn concentrations, clay and silt contents than the other reservoirs (Ayvacık, Bayramdere, and Umurbey). …”
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  12. 572

    Performance Optimization of Piled Raft Foundations in Layered Soil under Uniform Vertical Loading Using Plaxis 3D by Biya Degefu Teji, Argaw Asha Ashango

    Published 2023-01-01
    “…In this study, the effects of raft thickness, number of piles, pile length, spacing of piles, and pile diameter on the response of piled-raft foundations were investigated using the finite element-based program Plaxis 3D for layered soils (medium to very stiff high plastic silty clay and medium to very dense silty sand soil) subjected to uniform vertical loading. …”
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  13. 573

    REE MINERALS IN BLACK SHALES OF THE PALEOPROTEROZOIC MIKHAILOVKA FORMATION (BAIKAL-PATOM HIGHLAND, SIBERIA) by E.E. Palenova, E.A. Rozhkova, E.V. Belogub, M.A. Rassomakhin

    Published 2022-09-01
    “…The matter source for its formation is related to REE and Th absorbed on organic matter and clay minerals, as well as the detrital monazite. …”
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  14. 574

    Carbonate Chemistry and Isotope Characteristics of Groundwater of Ljubljansko Polje and Ljubljansko Barje Aquifers in Slovenia by Sonja Cerar, Janko Urbanc

    Published 2013-01-01
    “…Four groups of groundwater were identified: (1) Ljubljansko polje aquifer, with higher Ca2+ values, as limestone predominates in its recharge area, (2) northern part of Ljubljansko Barje aquifer, with prevailing dolomite in its recharge area, (3) central part of Ljubljansko Barje aquifer, which lies below surface cover of impermeable clay and is poor in carbonate, and (4) Brest and Iški vršaj aquifer in the southern part of Ljubljansko Barje with higher Mg2+ in groundwater and dolomite prevailing in its recharge area. …”
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  15. 575

    Geotechnical Aspects of Explosive Compaction by Mahdi Shakeran, Abolfazl Eslami, Majid Ahmadpour

    Published 2016-01-01
    “…Results indicated suitable EC performance for unstable and liquefiable deposits having particle sizes ranging from gravel to silty sand with less than 40% silt content and less than 10% clay content. However, EC is most effective in fine-to-medium sands with a fine content less than 5% and hydraulically deposited with initial relative density ranging from 30% to 60%. …”
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  16. 576

    Correlation between Electrochemical Impedance Spectroscopy and Structural Properties of Amorphous Tunisian Metanacrite Synthetic Material by Nouha Jaafar, Hafsia Ben Rhaiem, Abdessalem Ben Haj Amara

    Published 2014-01-01
    “…Metanacrite is a synthetic material originated by heating (550°C) of a clay mineral (Tunisian nacrite) belonging to the kaolin group. …”
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  17. 577

    Nanoclay Reinforced Ternary Blends Based on Biodegradable Polymers for Drug Delivery Application by Mohsin Ali, Sadullah Mir, Obaid-Ur-Rahman Abid, Mirza Arfan Yawer, Ihsan Ullah

    Published 2022-01-01
    “…In this study, ternary blends based on chitosan, polyvinyl alcohol, and polyethylene glycol reinforced with organically modified montmorillonite (nanoclay) clay were synthesized. These ternary blends were evaluated as transdermal drug delivery patches using tramadol as a model drug. …”
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  18. 578

    Determination of Gradation of Recycled Mixed Coarse Aggregates for Pavement Base or Subbase by Crushing Fractals by Jianjun Li, Yong Pei, Pengcheng Xu, Hui Chang

    Published 2019-01-01
    “…Finally, the mixing amount of recycled clay bricks in recycled mixed coarse aggregates for pavement base or subbase is discussed.…”
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  19. 579

    Occurrence, Source, and Mobilization of Iron, Manganese, and Arsenic Pollution in Shallow Aquifer by Md. Shajedul Islam, M. G. Mostafa

    Published 2023-01-01
    “…The investigation illustrated that the source of both metals on the upper platform is consolidated silty soil and aquifer sediment, whereas, in the river valley, they originate from Fe and Mn-bearing nodules in the rich clay layer and tidal mud. In addition, the frequent fluctuation of river flow, excess water mining, and an unbalanced recharge/discharge ratio are the causes of higher concentrations of both metals. …”
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  20. 580

    Mechanical Properties of Plastic Sand Brick Containing Plastic Waste by Kameshwar Sahani, Bhesh Raj Joshi, Kabiraj Khatri, Abiraj Thapa Magar, Sabin Chapagain, Nabanita Karmacharya

    Published 2022-01-01
    “…The purpose of this study was to investigate the environment-friendly potential use of plastic and demonstrate usefulness of plastic sand bricks as alternative structural elements, replacing standard clay brick. The physical and mechanical properties of plastic sand bricks were studied in different plastic sand ratios of 1 : 3, 1 : 4, and 1 : 5 by their weight, using plastic as a binder. …”
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