A lightweight wheat ear counting model in UAV images based on improved YOLOv8 by Ruofan Li, Xiaohua Sun, Kun Yang, Zhenxue He, Zhenxue He, Xinxin Wang, Xinxin Wang, Chao Wang, Chao Wang, Bin Wang, Fushun Wang, Fushun Wang, Hongquan Liu, Hongquan Liu

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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

“…During this period, underground drilling was employed for gas pumping in target coal seams and their upper adjacent strata to ensure mining safety in the Fushun mining area in Liaoning Province, the Yangquan mining area in Shanxi Province, and the Tianfu mining area in Chongqing City. …”
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