Showing 261 - 273 results of 273 for search '"quartz"', query time: 0.05s Refine Results
  1. 261

    Electrochemical Sensors Based on Single-Wall Carbon Nanotubes in Voltammetric Ascorbic Acid Tests by Natalia V. Ivanova, Elizaveta A. Martynova, Anna I. Vershinina, Maksim V. Lomakin, Galina O. Eremeeva, Olesya R. Gordaya, Sergey D. Shandakov

    Published 2023-12-01
    “…Thin films of randomly oriented single-wall carbon nanotube bundles were deposited downstream of a floating aerosol CVD reactor, which included a high temperature furnace with a quartz tube. The synthesis of the single-wall carbon nanotube samples was performed at 825°C. …”
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  2. 262

    Toxicological effects of the environmental pollutant perfluoronanoic acid on the ground-dwelling arthropod Solenopsis invicta by Wenxuan Wang, Mingrong Liang, Yangting Ou, Xiangrui Wang, Yunbo Song, Huimei Chen, Jingxin Hong, Yuling Liang, Yongyue Lu

    Published 2025-01-01
    “…For instance, after 12 hours at 0.12 mg/g PFNA, large and medium workers excavated only 0.136 g and 0.064 g of quartz sand, respectively, significantly less than controls. …”
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  3. 263

    Mineralogy and geochemistry of shale from Shanxi Formation, Southern North China Basin: Implication for organic matter accumulation by Qian Chen, Pei Li, Xiaoliang Wei, Changsheng Chen, Wei Dang, Haikuan Nie, Jinchuan Zhang

    Published 2025-04-01
    “…The Shanxi Shale is primarily composed of clay minerals (34.24 %–75.20 %) and quartz (23.80%–46.39 %), with a notably low carbonate content (<5 %). (2) Illite in the lower sections of the Shanxi Shale is likely sourced from detrital input rather than chemical conversion, while the dissolution of potassium feldspar may account for the elevated kaolinite content. …”
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  4. 264

    UV-fs-LA-ICP-MS Analysis of CO2-Rich Fluid Inclusions in a Frozen State: Example from the Dahu Au-Mo Deposit, Xiaoqinling Region, Central China by Wei Jian, Moritz Albrecht, Bernd Lehmann, Jingwen Mao, Ingo Horn, Yanhe Li, Huishou Ye, Zongyan Li, Guanguan Fang, Yongsheng Xue

    Published 2018-01-01
    “…Here, we report the application of this technique through the case study of CO2-rich fluid inclusions from the quartz vein-style Au-Mo deposit of Dahu in the Xiaoqinling region of central China. …”
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  5. 265

    A sedimentological oxymoron: highly evolved glauconite of earliest diagenetic origin by Tribovillard, Nicolas, Bout-Roumazeilles, Viviane, Guillot, François, Baudin, François, Deconinck, Jean-François, Abraham, Romain, Ventalon, Sandra

    Published 2023-04-01
    “…Contrasted grain-size distribution patterns of glauconite and quartz grain populations (isolated after acid digestion and magnetic separation) evidenced that glauconite formed after sediment deposition. …”
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  6. 266

    The contrasting origins of glauconite in the shallow marine environment highlight this mineral as a marker of paleoenvironmental conditions by Tribovillard, Nicolas, Bout-Roumazeilles, Viviane, Abraham, Romain, Ventalon, Sandra, Delattre, Marion, Baudin, François

    Published 2022-12-01
    “…Being chemically and physically resistant, glauconite is a mineral that is often reworked, like quartz grains. This is frequently the case of the Jurassic deposits of the Boulonnais, where glauconite, almost ubiquitous, either in traces or in significant proportions of the sediments, presents a grain size sorting attesting to its transport and reworking. …”
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  7. 267

    Experimental Study on Impermeability Law of Aquiclude Reconstructed by Mudstone of External Dump in Arid Zone by Li Ma, Chendong Liu, Yinli Bi, Suping Peng, Kaisheng Jiang, Hui Zhang, Qiang Luo, Fei Xue, Tianxin Xu, Tianxiang Li, Jing Wu, Jiahao Tian, Dongxu Zhang

    Published 2021-01-01
    “…XRD diffraction experiments are used to determine the composition of red mudstone including kaolinite mineral, quartz, potash feldspar, albite, and illite. The moisture content of the red mudstone is 4.16% as measured by the indoor drying experiment. …”
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  8. 268

    Nature and Origin of Mineralizing Fluids in Hyperextensional Systems: The Case of Cretaceous Mg Metasomatism in the Pyrenees by Benoît Quesnel, Marie-Christine Boiron, Michel Cathelineau, Laurent Truche, Thomas Rigaudier, Gérard Bardoux, Pierre Agrinier, Michel de Saint Blanquat, Emmanuel Masini, Eric C. Gaucher

    Published 2019-01-01
    “…Talc-chlorite ore is characterized by the presence of brines trapped in dolomite, quartz, and calcite fluid inclusions in the vicinity of the talc-rich zone. …”
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  9. 269

    Hydrogen and hydrogen sulphide in volcanic gases: abundance, processes, and atmospheric fluxes by Aiuppa, Alessandro, Moussallam, Yves

    Published 2023-09-01
    “…The high H$_{2}$ concentrations (and low H$_{2}$S/SO$_{2}$ compositions, of ${\sim }$0.1 on average) in high-temperature (${>}$1000 °C) magmatic gases are overall consistent with those predicted thermodynamically assuming external redox buffering operated by the coexisting silicate melt, at oxygen fugacities ranging from ${\Delta }$FMQ $-$1 to 0 (non-arc volcanoes) to ${\Delta }$FMQ 0 to ${+}$2 (arc volcanoes) (where ${\Delta }$FMQ is oxygen fugacity expresses as a log unit difference relative to the Fayalite–Magnetite–Quartz oxygen fugacity buffer). Lower temperature (${<}$1000 °C) volcanic gases exhibit more oxidizing redox conditions (typically above the Nickel–Nickel Oxide buffer) that are caused by a combination of (i) gas re-equilibration during closed-system (gas-phase only) adiabatic cooling in a gas-buffered system, and (ii) heterogenous (gas–mineral) reactions. …”
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  10. 270

    Impacts of high CDW levels on the chemical, microstructural, and mechanical behavior of cement-based mortars by M.L. Peixoto, S.D. Jesus, H.S. Cavalcante, B.S. Teti, R.C. Manta, N.B. Lima, H.C.B. Nascimento, S. Fucale, N.B.D. Lima

    Published 2025-07-01
    “…Further, the XRD results revealed diffraction peaks associated with Quartz, Portlandite, and Ettringite phases, corroborating the technical feasibility of using CDW. …”
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  11. 271

    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. …”
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  12. 272

    Dacostaite, K(Mg<sub>2</sub>Al)[Mg(H<sub>2</sub>O)<sub>6</sub>]<sub>2</sub>(AsO<sub>4</sub>)<sub>2</sub>F<sub>6</sub>&thinsp; ⋅ &thinsp;2H<sub>2</sub>O, a new fluoride–arsenate mi... by C. Biagioni, C. Biagioni, D. Mauro, D. Mauro, J. Sejkora, Z. Dolníček, A. Dini, R. Škoda

    Published 2025-01-01
    “…In the type material, dacostaite is associated with quartz, sulfur, gypsum, and a pharmacosiderite-like mineral in a small cavity of silicified limestone. …”
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  13. 273

    Petrogenetic evidences in geodynamics and placement of Nordoz intrusive masses in Alborz-Azerbaijan structural zone by Shahryar Mahmoudi, Shiva Lavi, Shohreh Hassanpour, Amir Ali Tabakh Shabani, Mehran Yegane Far

    Published 2024-12-01
    “…The principal minerals of these rocks are plagioclase, alkali feldspar, quartz, amphibole, clinopyroxene, and olivine (in base samples). …”
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