Showing 121 - 140 results of 273 for search '"quartz"', query time: 0.05s Refine Results
  1. 121

    Discovery of the Hailin impact crater in northeast China by Feng Yin, Ming Chen, Wenge Yang, Ho-kwang Mao

    Published 2025-01-01
    “…The bottom of the crater is filled by Quaternary sediments with large amounts of rock fragments underneath. The discovery of quartz planar deformation features in rock clasts on the crater floor provides diagnostic evidence for the impact origin of the structure. …”
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    Article
  2. 122

    Petrography of Sandstone Units of Injana Formation in Al-Teeb Area South Eastern Iraq by Hasan Kattoof Jasim, Maysoon Omer Ali

    Published 2025-01-01
    “…Ten samples of these sandstone were collected in order thin sectined for petrogtaphic decribtion. these sandstone are composed from quartz (both monocrystalline and polycrystalline), feldspar (potash feldspar and plagioclase feldspar), and rock fragments (sedimentary, igneous, and metamorphic rock fragmentd), the sedimentary rock fragments composed from; carbonate, chert, old sandstone, mudstone, and evaporate rock fragments. …”
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  3. 123

    THE LOWER PALEOLITHIC INDUSTRY OF ANKHE IN VIETNAM WITH THE SO-CALLED MOVIUS LINE by Nguyễn Khắc Sử

    Published 2019-09-01
    “…The An Khe industry is characterized by a collection of stone tools made of local river and stream quartz, quartzite pebbles which are large, hard, and fine grained. …”
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  4. 124

    Fractal Characteristics of Pore Structure of Longmaxi Shales with Different Burial Depths in Southern Sichuan and Its Geological Significance by Manping Yang, Yanyan Pan, Hongye Feng, Qiang Yan, Yanjun Lu, Wanxin Wang, Yu Qi, Hongjian Zhu

    Published 2024-12-01
    “…The fractal dimension has a positive association with the pore structure parameters (SSA, PV), TOC, and <i>R</i><sub>o</sub> and a negative association with the mineral component (quartz, feldspar, clay mineral) contents. Minerals like quartz, feldspar, and clay will slow down the expansion of pores, but when SSA and PV increase, the pore heterogeneity will be greater and the pore structure more complex.…”
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  5. 125

    Aggregation modes of anionic oxacarbocyanines with polycations in solution and in ESAMs by Andrea Lodi, Glauco Ponterini

    Published 2006-01-01
    “…On the contrary, the latter are extensively and almost exclusively obtained in electrostatically self-assembled multilayers (ESAMs) prepared by alternate polycation/dye adsorption on quartz substrates. The J-aggregate growth on supported polycations is qualitatively shared by the four cyanines, a fact that reveals the crucial role of the double anionic substitutions on the dyes. …”
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  6. 126

    The first experience of laser scalpel «LS-0,97» application at endoscopic ablation of rectal polyps by V. S. Rubtsov, Yu. V. Chalyk

    Published 2011-05-01
    “…The contact laser photocoagulation was applied in continuous mode using quartz monothread 600 microns in diameter. Totally 16 polyps of the rectum at 11 patients over 45 years old were removed by laser ablation.Results. …”
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  7. 127

    The measurement of the vertical relief on metal-graphic microscopes of production of OJC «Optoelectronic systems» by A. G. Anisovich, A. S. Buinitskaya

    Published 2019-08-01
    “…For a plane-parallel quartz plate, the measurement results were 0.435 µm when determined microscopically, as well as the object-micrometer. …”
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  8. 128

    Thermal behavior of calcite as an expansive agent by Shahraki B.K., Mehrabi B., Gholizadeh K., Mohammadinasab M.

    Published 2011-01-01
    “…XRD results show that quartz impurity in calcite samples at 900°C forms larnite phase (Ca2SiO4). …”
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  9. 129

    A Novel System for Measuring Optical Properties in Arterial Blood of Man by A. Castañeda-Miranda, L. D. L. Vizcaya

    Published 2006-01-01
    “…A device to obtain the electromagnetic spectrum in the blood has being designed and is presented in this work. This device uses a quartz lamp, emitting electromagnetic radiation between 200 nm and 2200 nm. …”
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  10. 130

    Effect of Temperature and Strain Rate on the Brittleness of China Sandstone by Xiuyuan Yang, Zhenlong Ge, Qiang Sun, Weiqiang Zhang

    Published 2021-01-01
    “…Under the condition of high temperature, the thermal damage to sandstone is intensified after 400°C, and the quartz phase changes after 600°C, which leads to the increase in microcrack density and the decrease in brittleness of sandstone. …”
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  11. 131

    Physicochemical Properties of Handere Clays and Their Use as a Building Material by Yasin Erdoğan

    Published 2015-01-01
    “…The mineralogical composition deduced from XRD is wide (smectite + palygorskite + illite ± feldspar ± chlorite ± quartz ± calcite ± serpentine) due to the high smectite contents (≈85%). …”
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  12. 132

    Development and Application of Analogous Materials for Fluid-Solid Coupling Physical Model Test by Mingyang Ren, Xiangjie Yin, Ningjing Li, Xuyang Wu, Heng Liu

    Published 2022-01-01
    “…In this study, a new type of analogous material reflecting the fluid-solid coupling effect is developed with iron powder, barite powder, and quartz sand as aggregates, white cement as a cementing agent, and silicone oil as a regulator. …”
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  13. 133

    50 eV O+ ion induced deposition of tin dioxide using tetramethyltin by Satoru Yoshimura, Takae Takeuchi, Masato Kiuchi

    Published 2025-02-01
    “…The aim of the present study was to deposit tin oxide films on Si wafers or quartz crystal microbalance plates acting as substrates, using low-energy ion beams. …”
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  14. 134

    COARSE-CRYSTALLINE PYRITE OF CENTRAL TIMAN by R.I. Shaybekov, M.Yu. Sokerin, V.G. Kotelnikov, A.Yu. Lysyuk, G.V. Ignatyev, E.M. Tropnikov

    Published 2021-06-01
    “…It contains galena, thorite, zircon, monazite, rutile, chlorite, muscovite, quartz, albite, apatite and calcite inclusions. The unit cell parameter of pyrite vary from 5.4137 ± 0.0002 to 5.4187 ± 0.0010 Å and correspond to an ideal pyrite. …”
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  15. 135

    INFLUENCE OF PURIFICATION PROCESS ON THE CHARACTERISTICS OF ROMANIAN CALCIUM BENTONITE by ANA-MARIA GEORGESCU, FRANÇOISE NARDOU, DENISA NISTOR ILEANA

    Published 2016-03-01
    “…., Satu Mare has the following mineralogical composition: 57 % montmorillonite, 40 % cristobalite, and 3 % quartz. Due to the relatively high percentage of impurities in natural calcium bentonite, we decided to purify the raw material, in order to improve the quality of montmorillonite. …”
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  16. 136

    Hydrophobic ZnO-TiO2 Nanocomposite with Photocatalytic Promoting Self-Cleaning Surface by Qiang Wei, Shaodan Wang, Wei Li, Xiaoxue Yuan, Yu Bai

    Published 2015-01-01
    “…The hydrophobicity and self-cleaning are the important influence factors on the precision and environment resistance of quartz crystal microbalance (QCM) in detecting organic gas molecules. …”
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  17. 137

    Research on the Disintegration Characteristics of Carbonaceous Mudstone and Properties of Modified Materials by Xinxi Liu, Yu Li, Shengnan Li, Yanming Zhou

    Published 2019-01-01
    “…The results show that the mineral composition of carbonaceous mudstone mainly contains illite, quartz, and kaolinite. It is found that the disintegration of carbonaceous mudstone can be divided into external factors and internal factors. …”
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  18. 138

    GEOCHEMICAL FEATURES OF HOST ROCKS OF THE POROKHOVSKOE TUNGSTEN DEPOSIT (SOUTH URALS) AND THEIR ROLE IN CONCENTRATION OF ORE MATTER by K.P. Maltseva, E.V. Belogub, K.A. Novoselov, D.A. Rogov, R.R. Irmakov

    Published 2023-12-01
    “…Statistical samplings were formed for various types of host rocks: andesites and their tuffs, shales, metasomatites (including sericite-quartz, epidote and chlorite-bearing) and skarns. …”
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  19. 139

    Wetting and Photocatalytic Properties of TiO2 Nanotube Arrays Prepared via Anodic Oxidation of E-Beam Evaporated Ti Thin Films by Soon Wook Kim, Hong Ki Kim, Jong Won Yun, Eui Jung Kim, Sung Hong Hahn

    Published 2015-01-01
    “…TiO2 nanotube arrays (TNAs) are fabricated on quartz substrate by anodizing E-beam evaporated Ti films. …”
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  20. 140

    Multiparameter Logging Evaluation of Chang 73 Shale Oil in the Jiyuan Area, Ordos Basin by Bobiao Liu, Chengqian Tan, Yinchao Huai, Yuhan Tan, Han Zhang, Zhao Feng

    Published 2023-01-01
    “…Brittle minerals such as quartz and feldspar were mainly found to be present in shale reservoirs and clay minerals which mainly consisted of illite. …”
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    Article