1Research progress on geochemical characteristics of minerals in coalYANG Chengwei1-20,312Research progress of preparation of coal-based carbon foam and factors affecting its electrochemical performanceHU Di, LI Wenbo, HUANG Peng, LIU Min, ZHAO Peng21-313Research progress on ammonia-coal co-combustion in industrial applicationsWANG Shengye, CUI Mingshuang, NIU Fang32-424Research progress in separation technology of methane and nitrogen from coalbed methaneLI Xiaoliang43-52,605Numerical simulation of coalbed methane development in Linxing block based on segmented fractured horizontal wellsWANG Xiaodong, ZHANG Shouren, WU Jian, LIANG Yu, LIU Shiqi, HUANG Fansheng53-606Gas occurrence characteristics and gas pre-drainage on ground in the 15th mining area of Lubanshan North MineTAN Yuanbing, ZHANG Zhijun, SHI Xin, CHEN Zhihao, ZHOU Ruiqi61-727Experimental study on optimization of coking coal blending scheme based on coal quality characteristics of lean coalYUE Weiming, ZHOU Wenyan, HOU Xiaorui, ZHOU Rui, LI Hufei, SHEN Yanfeng, WANG Meijun73-79,868Experiment study and optimization reformation of the SNCR of the pulverized coal industrial fired boilerDUAN Lu80-869Research on coal quality and coking characteristics of typical mixed coking coal in Heilongjiang ProvinceWU Yang87-96