Showing 281 - 300 results of 327 for search '"quartz"', query time: 0.05s Refine Results
  1. 281

    Analysis of the Particle Characteristics of Aeolian Sand in Yulin Area, China by Qinglong You, Zhang Yang, Jinglian Ma, Xili Yan, Taiwo Sesay, Haifeng Wang, Zhou Liang

    Published 2022-01-01
    “…SEM observation revealed different profile configurations on the surfaces of the Aeolian sand particles including intensive pitting, corrosion marks, and cracks, while the XRD results indicated the presence of quartz and feldspar in more than 95% of the entire mineral composition of the sand particles. …”
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    Article
  2. 282

    Separation Time of Aluminothermic Reduction Products for Sustainable Silicon Production [version 2; peer review: 2 approved] by Óscar Crego, Javier Bullón, Dolores Gómez, José Luis Ferrín, Luis Javier Pérez-Pérez, Iván Martínez

    Published 2025-01-01
    “…This new method relies on the aluminothermic reduction of quartz in slag, offering a more sustainable alternative to the traditional reduction of silica with carbon in submerged arc furnaces. …”
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  3. 283

    Deformation Failure and Support Test of Surrounding Rock in Deep Arched Roadway with Straight Wall by Shuqi Pan, Shuaitao Liu, Liming Cao, Jianqiang Guo, Chao Yuan

    Published 2021-01-01
    “…The similar simulation material of the roadway surrounding rock with quartz sand as the aggregate, cement as the cementing agent, and gypsum powder as the regulator was selected. …”
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  4. 284

    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
    “…Alkaline aqueous medium environment occurred in E2s1+2 where volcanic activities have insignificant influence on pore fluids, evidenced by typical alkaline diagenetic events such as K-feldspar albitization, quartz dissolution, feldspar dissolution, and carbonate cementation. …”
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    Article
  5. 285

    Experimental Study on Nanomechanical Properties of Yunnan Red-Bed Mudstone by Xian Ye, Yongcai Liu, Haibin Xue, Guo Li, Jin Xing

    Published 2022-01-01
    “…Overall, the elastic modulus and the hardness of sample 2 (Jingdong) are the greatest because of its high quartz crystal content. It shows that the nanomechanical properties of red-bed mudstone in Jingdong are better than those in Chuxiong and Nanhua. …”
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  6. 286

    Hydrogeochemistry, Geothermometry, and Genesis of the Hot Springs in the Simao Basin in Southwestern China by Yuqi Zhang, Xun Zhou, Haisheng Liu, Mingxiao Yu, Kuo Hai, Mengru Tan, Dongxue Huo

    Published 2019-01-01
    “…Due to the effect of mixing, the reservoir temperatures (51°C-127°C) calculated with the quartz geothermometer are regarded as the minimum reservoir temperatures. …”
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  7. 287

    Mycorrhizal fungi mitigate cadmium leaching losses by decreasing the inorganic cadmium proportion in soil solutions by Wei Li, Jiong Wu, Jie Yan, Xinran Liang, Xiaoyi Li, Yongmei He, Bo Li, Fangdong Zhan

    Published 2025-01-01
    “…The adsorption of Cd ions by quartz sand increased with the application of GRSP and LMWOAs, which resulted in a 27.6 %–69.5 % reduction in Cd leaching loss in the sand column. …”
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  8. 288

    Insights into the Regional Transport and Local Formation of Secondary Organic Aerosol in Delhi, India by Himadri Sekhar Bhowmik, Sachchida Nand Tripathi, Ravi Sahu, Ashutosh Kumar Shukla, Vipul Lalchandani, Shamitaksha Talukdar, Nidhi Tripathi, Lokesh Sahu

    Published 2022-09-01
    “…Abstract The organic carbon (OC) and elemental carbon (EC) content were measured from PM2.5 quartz filter substrates collected over 24 hours in Faridabad, a heavily polluted city in Delhi national capital region (NCR), during January–February 2018. …”
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  9. 289

    Fold-Related Faults Track Progressive Fold Development from Layer-Parallel Shortening to Subsequent Orthogonal Extension within an Appalachian Buckle Fold System: Bear Valley Mine,... by Arlo Brandon Weil, Mary Beth Gray, Kylie G. Cush, Mattathias D. Needle, Juliet G. Crider

    Published 2025-01-01
    “…A kinematic analysis of more than 900 outcrop-scale faults coupled with clearly established relative age relationships allows delineation of distinctive fault sets and their roles in accommodating strain within a quartz-dominated sandstone and an overlying silty shale. …”
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  10. 290

    Unraveling the risk of dredging on river bars for mineral sand mining: an engineering geological approach by Md. Shohel Rana, A.T.M. Shakhawat Hossain, Md. Fuad Hasan, Md. Aminur Rahman, Pradip Kumar Biswas, Mohammad Nazim Zaman

    Published 2025-02-01
    “…The study also identifies the risk of localized slumping and soil instability, which exacerbated by micaceous and quartz-rich sands. The CBR results further classify the subgrade as weak to medium-strong, indicating risks of slumping, erosion, and instability. …”
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    Article
  11. 291

    Surfactant-mediated transport behavior of zinc oxide nanoparticles in porous media by Yujue Wang, Zhou Cheng, Ming Wu, Yanru Hao

    Published 2025-01-01
    “…In this study, the transport of ZnO nanoparticles (nZnO) in quartz sand (QS) in the presence of cetyltrimethylammonium bromide (CTAB) is investigated by adsorption and column experiments in combination with XDLVO analysis and numerical simulation. …”
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  12. 292

    [retracted] Assessment of geochemistry and reprocessing capacity of old copper tailings in Province of Benguet, Philippines by Alexandria Tanciongco, Jessie Samaniego, Cris Reven Gibaga, Rico Neil Quierrez, John Henry Gervasio, Angel Bautista VII, Carlo Arcilla

    Published 2025-01-01
    “…The primary components of the tailings are quartz, biotite, and plagioclase feldspars, with minor amounts of calcite, magnetite, chalcopyrite, and pyrite. …”
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  13. 293

    Multi-scale characterization of tight carbonate rocks based on digital cores by Changsheng Wang, Changsheng Wang, Lili Tian, Lili Tian, Chuanrui Sun, Chuanrui Sun, Yuwei Deng, Yuwei Deng, Ying Zhou, Ying Zhou, Xin Nie, Xin Nie

    Published 2025-01-01
    “…The samples with more dolomite have the largest number of pores and throats, the largest coordination number, and the best connectivity; the samples with more calcite have the smallest pore radius. The presence of quartz is conducive to the preservation of pores. …”
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  14. 294

    New View on the Genesis of the Bashuihe Pluton, Laoshan Granites, China: Indications from Fluid Inclusions and H–O Isotopes by Huimin Liu, Zhaojun Song, Hongbo Yan, Wenyu Wang, Xinru Wang, Yifang Sun, Haonan Li

    Published 2021-01-01
    “…This study conducted microthermometry and stable isotope analysis of quartz inclusions from oval caves and host rocks from the Bashuihe pluton to reconstruct the diagenetic evolutionary history of the Laoshan area. …”
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  15. 295

    Depth variations as effective indicators for strength variation of Najran granites, Najran region, Saudi Arabia by Ahmed Abd El Aal, Yahya Al Zamana, Turki Dunquwah, Omar Alsalmi, Jabir Hussain, Javed Iqbal, Moustafa Abdulrahim Mohamedsalih, Ahmed E. Radwan, Hezam Al-Awah

    Published 2025-02-01
    “…Analyses of XRF data also considered the mechanical reasons for the strength with burial depth effects; findings suggested a direct relationship between burial depths and UCS values and inverse relationship with quartz content. For a better knowledge of the granites throughout the region, it is advised to carry out comparative studies on other granites in Saudi Arabia and create a comprehension model using numerical simulation.…”
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  16. 296

    Non-invasive analysis of faience necklace beads and scarabs from Late Bronze Age and Early Iron Age necropolises in southern Portugal by António M. Monge Soares, António P. Gonçalves, Luis C. Alves, Pedro Valério, Filipe Santos, Rui Monge Soares, Manuela de Deus

    Published 2025-02-01
    “…The results show that most of these small, high-value ornaments have a body of ground quartz covered by glaze. They are consequently classified as faience artefacts. …”
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  17. 297

    Evaluating the reinforcements efficiency of sawdust and corncob wastes in structural concrete: A comprehensive review by Abiodun Kilani, Ademilade Olubambi, Bolanle Ikotun, Oladipupo Oladejo, Babatunde Famodu

    Published 2023-07-01
    “…From the X–ray result, quartz (SiO2) shows an essential and main mineralogical content of CCA. …”
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  18. 298

    Aquathermolysis of heavy oil catalyzed by transition metal salts and clay by Du, Yingna, Zhang, Liyuan, Jing, Rui, Li, Yongfei, Yang, Bo, Chen, Gang

    Published 2023-09-01
    “…Currently, researchers have indicated that inorganic minerals in reservoirs, such as clay minerals, carbonates and quartz, can catalyze the evolution of organic matter into oil and gas. …”
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  19. 299

    Exploring seasonal dynamics of sea spray aerosol bioactivity: Insights into molecular effects on human bronchial epithelial cells by Zixia Liu, Emmanuel Van Acker, Maarten De Rijcke, Filip Van Nieuwerburgh, Colin Janssen, Jana Asselman

    Published 2025-01-01
    “…In this study, we exposed human bronchial epithelial cells (BEAS-2B) to natural SSA samples, collected monthly using quartz microfiber filters mounted on tripods within 15 m of the waterline, with air drawn through pumps, throughout a one-year period at the Ostend coast, Belgium, and measured cellular gene expression changes using RNA sequencing. …”
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  20. 300

    Nature and Evolution of the Ore-Forming Fluids from Nanmushu Carbonate-Hosted Zn-Pb Deposit in the Mayuan District, Shaanxi Province, Southwest China by Suo-Fei Xiong, Yong-Jun Gong, Shu-Zhen Yao, Chuan-Bo Shen, Xiang Ge, Shao-Yong Jiang

    Published 2017-01-01
    “…Detailed fluid inclusion study shows two types of fluids in the sphalerite, quartz, dolomite, calcite and barite, that is, aqueous-salt dominant inclusions (type I) and hydrocarbon-bearing inclusions (type II). …”
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