1Study on the properties and hydrocracking performance of tar residueGU Xiaohui1,2,3, ZHAO Yuan1,2,3, LI Peilin1,2,3, ZHONG Jinlong1,2,31-62Development direction of energy-saving and emission-reduction for coal enterprises in China under new situationYANG Yun7-143Dynamic analysis of ecological environment in Shenhua Hulunbeier mining areaZHAO Longsheng, LI Xiaonan, ZHAO Xiyang, JI Yuning, CHEN Mengyuan, ZHANG Kai15-204Simulation and optimization of pressure-swing batch distillation for separating the methanol-acetonitrile systemGUO Haoqian1,2,3, LI Xuefei1,2,3, LI Xiaoliang1,2,321-26,335Impact of different ways of coke quenching on 40 kg coke qualityWU Chenglin, TANG Shuai, HOU Jinpeng, ZHANG Shidong27-336Design and application of information management system for coal testing laboratoryHUANG Chao, SUI Yan34-397The development and application of coal testing data collection systemNI Lin, BAI Xiaobo, NI Haoran, CUI Xiaofeng, ZHAO Yongjun40-468Application and development of the plastic layer index detection technologyTIE Weibo, WANG Qi, ZHANG Song47-519Analysis of coal quality characteristics and coal-forming environment in Daijiatian coal mineJIANG Hongbing, YANG Lei, LIANG Jian52-5810Analysis of coal quality characteristics of Damochong coal mine in GuizhouQIE Rubing, ZHOU Ze59-64,7011Distribution characteristic analysis of sulphur in coal of Kaitai coal mine in Pu' an county of Guizhou provinceYANG Ruiqin65-7012Application of partial least-squares regression method and LIBS in rapid detecting of ash content of coalLU Maorong71-7413Discussion on the improvement of determination method of nitrogen in solid biofuelSHEN Guoxin75-78,8314Study on the effect of pressure on the determination results of lignite volatiles in pressure cake methodYANG Ni, FU Kun79-8315Application of quantitative loading system for spiral feeding in Longgang coal preparation plantLI Chao84-86,9216Spontaneous combustion tendency of coal using adiabatic spontaneous combustion test methodXIAO Bingqiu, WANG Qin, LI Dongjun, WU Shuyi87-92 