Showing 1,121 - 1,140 results of 1,165 for search '"clay"', query time: 0.08s Refine Results
  1. 1121

    Simultaneous estimation of multiple soil properties from vis-NIR spectra using a multi-gate mixture-of-experts with data augmentation by Xiaoqing Wang, Mei-Wei Zhang, Ya-Nan Zhou, Lingli Wang, Ling-Tao Zeng, Yu-Pei Cui, Xiao-Lin Sun

    Published 2025-01-01
    “…In the present study, a MMoE was built based on a total of 17,272 mineral soil samples from the Land Use/Cover Area Frame Survey (LUCAS) topsoil database that includes vis-NIR spectra with ten physicochemical properties, i.e., clay, silt, sand, pH (in water), organic content (OC), calcium carbonate (CaCO3), nitrogen (N), phosphorous (P), potassium (K), and cation exchange capacity (CEC). …”
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  2. 1122

    Source distribution, ecological risks, and controlling factors of heavy metals in river sediments: Receptor model-based study in a transboundary river basin by Abu Reza Md Towfiqul Islam, Abu Hena Md Fazla Rabbi, Amit Hasan Anik, Rahat Khan, Md Abdullah Al Masud, Grara Nedjoud, Abubakr M. Idris, Md Naimur Rahman, Venkatramanan Senapathi

    Published 2025-02-01
    “…In this study, ecotoxicological hazards, governing factors, and the distribution of nine HMs (uranium (U), lead (Pb), cadmium (Cd), nickel (Ni), chromium (Cr), manganese (Mn), iron (Fe), zinc (Zn), and copper (Cu)), as well as sediment characteristics (sand, silt, clay, organic matter, and pH) are assessed within the sediment. …”
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  3. 1123

    Uranium Mineral Transport in the Peña Blanca Desert: Dissolution or Fragmentation? Simulation in Sediment Column Systems by Victoria Pérez-Reyes, Rocio M. Cabral-Lares, Jesús G. Canche-Tello, Marusia Rentería-Villalobos, Guillermo González-Sánchez, Blanca P. Carmona-Lara, Cristina Hernández-Herrera, Fabián Faudoa-Gómez, Yair Rodríguez-Guerra, Gregorio Vázquez-Olvera, Jorge Carrillo-Flores, Ignacio A. Reyes-Cortés, Daniel Hernández-Cruz, René Loredo-Portales, María E. Montero-Cabrera

    Published 2025-01-01
    “…This study presents an experimental simulation of uranium transport in SPB sediments using three approaches: (i) a batch experiment to evaluate the ideal adsorption of (UO<sub>2</sub>)<sup>2+</sup> by fine sediment; (ii) a column system fed with 569 mgU L<sup>−1</sup> UO<sub>2</sub>(NO<sub>3</sub>)<sub>2</sub> to simulate adsorption by different sediment particle sizes; (iii) a column system with an upper horizon of uranophane from the area, fed with deionized water, to simulate uranium weathering and transport in particulate material, determined by liquid scintillation counting, revealed that the clay fraction had the highest adsorption capacity for U. …”
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  4. 1124

    Petrogenesis of REE-rich two-mica granite from the Indosinian Xiekeng pluton in South China Block with implications for REE metallogenesis by Defu Zhang, Defu Zhang, Tingting Lv, Xiangaung Wang, Xiangaung Wang, Mingxuan Cao, Xiquan Chen, Xiquan Chen, Yongwen Zhang, Liangxin Gong

    Published 2025-01-01
    “…Zircon εHf(t) values range from −14.93 to −9.12, with depleted mantle model ages (TDM2) of 1.86–2.03 Ga, and whole-rock Nd isotopic model ages (TDM2) are 1.90–1.93 Ga, indicating a source primarily from partial melting of Proterozoic continental crustal clay-rich mudstones. Based on muscovite chemistry, the average formation pressure of the Xiekeng pluton is calculated to be 8.35 kbar (∼30 km paleodepth). …”
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  5. 1125

    A suitability modeling based on geographic information system for potential micro hydropower dam site by O. Setiawan, H.Y.S.H. Nugroho, N. Wahyuningrum, D. Auliyani, K.S. Hardjo

    Published 2024-01-01
    “…These classes were typified by high drainage density, topographic wetness index, stream power index, low vegetation cover, moderate slope, situated on second or higher stream orders, normal temporal distribution of rainfall, and sandy clay loam soil texture with igneous and sedimentary complex rocks. …”
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  6. 1126
  7. 1127

    Les réseaux d’alimentation en eau des pentes de la Croix-Rousse et de la presqu’île de Lyon by Jules Ramona

    Published 2023-12-01
    “…Similarly, the two long clay pipes recently uncovered on the Hôtel-Dieu and Saint-Antoine parking sites are probably linked with an outdoor space. …”
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  8. 1128

    Microplastic analysis in soils: A comparative assessment by Stoyana Peneva, Quynh Nhu Phan Le, Davi R. Munhoz, Olivia Wrigley, Flora Wille, Heidi Doose, Crispin Halsall, Paula Harkes, Michael Sander, Melanie Braun, Wulf Amelung

    Published 2025-01-01
    “…Pyrolysis-GC-MS showed intermediate results, displaying low sensitivity to plastic type and lower recoveries as soil clay content increased. We conclude that different methods have different sensitivities for different MiP materials in different soils, i.e. comparisons of MiP loads and threshold settings for MiP loads across methodologies require careful consideration. …”
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  9. 1129

    Multifractal characteristics of pore structure in the terrestrial shale reservoirs of the Lianggaoshan formation in northeast sichuan basin and its geological significance by Jiping Wang, Jiping Wang, Hongmei Shao, Hongmei Shao, Yuanhao Zhang, Yuanhao Zhang, Zhenxue Jiang, Zhenxue Jiang, Bo Gao, Bo Gao, Lingling Li, Lingling Li, Huifang Pan, Huifang Pan, Haonan Wang, Haonan Wang, Xi Lu, Xi Lu, Hengyuan Qiu, Hengyuan Qiu, Xiaobiao He, Xiaobiao He, Chengju Zhang, Chengju Zhang

    Published 2025-02-01
    “…Lastly, the pore structure of massive fine-silt sandstone exhibits a high degree of complexity and heterogeneity, revealing the significant influence of quartz and clay mineral interactions on pore development. These findings advance the understanding of shale pore structure and its impact on hydrocarbon enrichment and recovery in the Lianggaoshan Formation, and offer valuable guidance for optimizing “sweet spot” selection. …”
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  10. 1130

    Hairy vetch influence on nitrous oxide and nitrate leaching losses during corn growing seasons in reduced and no-till systems by Ashani Thilakarathne, Madhabi Tiwari, Oladapo Adeyemi, Amanda Weidhuner, Pawan Kumar, Gurbir Singh, Jon Schoonover, Karl Williard, Karla Gage, Amir Sadeghpour

    Published 2025-01-01
    “…However, the effects of hairy vetch following soybean (Glycine max L.) harvest on NO3-N leaching and N2O emissions during the following corn season in soil with clay and fragipans are less assessed. This study evaluated the influence of cover crop (hairy vetch vs. no-CC control) and tillage systems (NT vs. …”
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  11. 1131

    Physicochemical Properties and Bioreactivity of Sub‐10 μm Geogenic Particles: Comparison of Volcanic Ash and Desert Dust by Ines Tomašek, Julia Eychenne, David E. Damby, Adrian J. Hornby, Manolis N. Romanias, Severine Moune, Gaëlle Uzu, Federica Schiavi, Maeva Dole, Emmanuel Gardès, Mickael Laumonier, Clara Gorce, Régine Minet‐Quinard, Julie Durif, Corinne Belville, Ousmane Traoré, Loïc Blanchon, Vincent Sapin

    Published 2025-01-01
    “…We found that Gobi Desert dust is more bioreactive than freshly erupted volcanic ash and Arizona test dust, which is possibly linked to the presence of microorganisms (bacteria) and/or nanoscale elongated silicate minerals (potentially clay such as illite or vermiculite) on particle surfaces.…”
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  12. 1132

    Effects of landslide hazards on quality of stream water and sediments by O. Phewnil, T. Pattamapitoon, N. Semvimol, W. Wararam, K. Duangmal, A. Intaraksa, K. Chunkao, P. Maskulrath, S. Hanthayung, P. Wichittrakarn

    Published 2024-07-01
    “…This soil profile comprised clay loam and sandy loam textures and was situated over aged geological formations of granite and shale rocks. …”
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  13. 1133

    Quais et ouvrages portuaires romains de Rouen/Rotomagus (Seine-Maritime) by Marie-Clotilde Lequoy

    Published 2020-12-01
    “…This structure presents a mixed external facing, made of medium and large limestone blocks, masoned with clay and sections of oak placed vertically about 1 m to 1.20 m apart from one another. …”
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  14. 1134
  15. 1135

    A Historical Study of the Effects of the 1930 Earthquake on the Human Geography and History of Selmas City and its Surrounding Region by Zeinab Ahmadvand, Tohid Malekzadeh Dilmaghani

    Published 2024-06-01
    “…However, all the structures made of clay and other similar materials vanished.The Selmas earthquake of such magnitude brought about significant changes to the tectonic, seismotectonic, and geomorphological aspects of Selmas Region and the enduring impact of these changes is evident to this day. …”
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  16. 1136

    Les fours « à pain » dans les Gaules et les Germanies (ve s. av. J.-C.-ve s. apr. J.-C.), un regard technique by Nicolas Monteix, Camille Noûs

    Published 2021-12-01
    “…While the shape of the dome makes the oven energy-intensive, other features help to improve its energy capacity, such as a basalt ring at the base of the dome and a sole built of baked clay on a thick layer of sand. Subsequently, the different variations observed in the construction techniques of dome ovens are presented. …”
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  17. 1137

    Petrogenesis of Intrusive body in Northeast of Joveinan, North of Isfahan, Urumieh- Dokhtar magmatic zone by Shahzad Sherafat, Majid Zeidi, Mahnaz Khodami

    Published 2024-10-01
    “…The main minerals of the rocks include plagioclase, clinopyroxene, hornblende, biotite, opaque minerals, minor quartz, sphene, apatite, and zircon, and secondary minerals including calcite, clay minerals, sericite, and chlorite. The igneous rocks exhibit a composition range of amounts of SiO2 (53.18-59.46 wt.%), Al2O3 (15.27-16.14 wt.%), Na2O (2.79-5.76 wt.%), K2O (1.42-2.56 wt.%) and variable concentrations of Fe2O3* (7.61-11.13 wt.%), MgO (2.92-3.87 wt.%), CaO (5.15-7.80 wt.%) and LOI (1.4-2.7 wt.%). …”
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  18. 1138

    Glazed Pottery Throughout the Middle and Modern Ages in Northern Spain by Ainhoa Alonso-Olazabal, Juan Antonio Quirós Castillo, Maria Cruz Zuluaga, Luis Ángel Ortega

    Published 2025-01-01
    “…Some correlation are identified between the use of specific clays to produce different glaze colours. White opaque glazes are applied to calcium-rich clays. …”
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  19. 1139

    Enhancing undrained shear strength prediction: a robust hybrid machine learning approach with naïve Bayes modeling by Chen Fang, Ying Li, Yang Shi

    Published 2025-02-01
    “…Abstract In geotechnical engineering, it is crucial to make sure that the undrained shear strength (USS) of soft, sensitive clays is accurately assessed. The accuracy in forecasting USS is pivotal for ensuring the structural integrity and stability of foundations and earthworks. …”
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  20. 1140

    Properties of the Loess Sediments in Ostrava Region (Czech Republic) and Comparison with Some Other Loess Sediments by Marian Marschalko, Işık Yilmaz, Lucie Fojtova, David Lamich, Martin Bednarik

    Published 2013-01-01
    “…Comparing other loess sediment studies worldwide it was discovered that the physical properties of the most abundant clays of low to medium plasticity, sandy clays, and sands as foundation soils vary as for the plasticity index, porosity, natural water content, and bulk density to a certain extent but not as significantly as once expected.…”
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