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    Spectroscopic Study on the Species and Color Differences of Gem-Quality Red Garnets from Malawi by Ming Li

    Published 2022-01-01
    “…To reveal the species of gem-grade red garnets with similar colors, especially the mechanisms underlying their subtle color differences, a series of tests, including conventional gemological tests, X-ray diffraction, Fourier-transform infrared spectroscopy, ultraviolet-visible spectroscopy, and X-ray photoelectron spectroscopy, were performed on gem-grade red garnets mined from Malawi. The results demonstrated that the color difference is not caused by the difference in species, and both the purplish-red and maroon-red garnets were magnesium-aluminum garnets (pyrope). …”
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    Effect of Bedding Structure on the Energy Dissipation Characteristics of Dynamic Tensile Fracture for Water-Saturated Coal by Shuang Gong, Lei Zhou, Zhen Wang, Wen Wang

    Published 2021-01-01
    “…The conclusions provide a theoretical basis for understanding the deterioration mechanism of coal after water saturation and the implementation of water injection dust prevention technology in coal mines.…”
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  20. 4620

    Stability of Close Chambers Surrounding Rock in Deep and Comprehensive Control Technology by Weijian Yu, Fangfang Liu

    Published 2018-01-01
    “…The stability and control technology of surrounding rock in the main shaft and auxiliary shaft system has been analyzed by the adjacent chamber and roadway group of −850 m level in Qujiang Mine, China, as an engineering background. Firstly, the numerical calculation of the excavation chamber was, respectively, carried out in different ways with the propagation theory of the excavation disturbance wave. …”
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