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    Gas drainage and utilization in coal mines in China: History, technological advances, and prospects by Guofu LI, Chao LI, Bichuan ZHANG, Yun XU, Zheng WANG, Xianjun ZHOU

    Published 2025-01-01
    “…In combination with the differences in geological conditions of gas in varying mining areas, three typical gas drainage modes have been formed: the surface-underground combined gas drainage mode through “four-zone linkage” in the Jincheng mining area in Shanxi Province (the new Jincheng mode), the protective layer mining mode for broken-soft and low-permeability coal seams in the Huainan-Huaibei area in Anhui Province (the Huainan-Huaibei mode), and the hydraulically enhanced permeability mode of the Songzao mining area in Chongqing City (the Songzao mode). …”
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    Research on Current Situation and Countermeasure of Chinese Primary Care Physicians' Community Rehabilitation Service Ability by LIAN Lu, WANG Di, CHEN Jiaying, LIU Wu

    Published 2025-02-01
    “…Methods The method of multi-stage stratified sampling combined with typical sampling was adopted to carry out an online questionnaire survey on doctors in primary health institutions in Jiangsu province, Anhui province, Henan province, Chongqing City and Gansu province. …”
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