1Numerical simulation study on stress distribution around the roadway-type horizontal wells in coal reservoirs:A case study of Hudi coal mine of Jincheng mining areaZHANG Xiaodong, SUN Feiyang, ZHANG Bin, HENG Shuai, LI Xianzhong1-92Geological characteristics of gas occurance and technical countermeasures of Wulan abandoned coal mineWANG Bo, ZHU Qingzhong, LIU Wenge, YU Zhijun, LIU Chunchun, SHI Mingjian, ZHOU Xiaogang, HAN Jiaye, GUO Qishan10-173Study on microscopic damage characteristics of coal under liquid nitrogen soakingREN Yongjie, WEI Jianping, LI Bo, ZHANG Lulu, WANG Zeqi18-254Determination method and application of reasonable level in high pumping roadwayFAN Shangchong, YANG Hongmin, QIU Xianglei, YIN Hai26-315Experimental study on the seepage evolution model of coal floor subsided karst collapse columnJIANG Quanle, ZHANG Boyang, HAO Ming32-386Targeting drainage technology of roof sandstone water in super-long working face of Muduchaideng coal mineWANG Guowen, YAN Xin, HE Xiaolang, DING Xiang, XIAO Lele39-457Milankovitch cycle and sedimentary response of the Es42s fine-grained sedimentary rocks in Dongying depressionDONG Xinjun, FENG Zhendong, NING Shuyuan, ZHANG Pengfei, CHEN Tao, ZHANG Lin, GAO Di, WU Wei46-568Research on the gradual refinement fusion strategy of land survey data and forest subgroup data based on semantic modelFENG Yongyu, YANG Shiyong, WANG Fang, WANG Xue, LIU Wei, WANG Yan57-669Evaluation study on health damage caused by PM2.5 in Henan Province from 2015 to 2018CHUAI Xiaoming, HAN Yanjun, ZHOU Haixia, FAN Chao67-7610Study on the migration and transformation regularity of natural organic matter in the low-temperature pore geothermal waterLI Yusong, ZHAO Li, ZHANG Panqun, ZHAO Yu, WANG Xinyi, LI Yaqi, KONG Maoran77-8411Study on optimization of NH3/NOx molar ratio in the whole area of SCR denitrification systemTAN Zengqiang, YAO Hao, ZHOU Mengwei, ZHANG Anchao, NIU Guoping, YAO Wei, PAN Dong85-92,10112Research on fault diagnosis method of MCCB based on multi data fusionLI Kui, LIANG Qiming, ZHAO Chengchen, HU Bokai, MA Dianliang, ZHAO Weizhuo93-10113Research on load sharing characteristics of double-ring herringbone planetary gear transmission system with eccentricity faultREN Fei, WANG Dexi, SHI Guiqin, LIANG Dong, WANG Ning, WANG Qi102-11014Study on body characteristics recognition model based on sitting dataDUAN Jiaqi, YANG Jianfeng, LIAO Yunting, TANAKA Eiichiro111-11615Multi-scene distributed generation planning based on clustering by fast search and find of density peakWU Xiaomeng, SHI Zheng, FU Ziyi, LIU Xinyu, DANG Jian, LI Fei117-12316An adaptive firefly algorithm improved ant colony algorithm for path planning of mobile robotDU Li, XU Guanghui, WANG Fanrong124-13017Fusion recommendation algorithm based on user attributes and item attributesSHEN Yanmei, LI Yaping, WANG Yan131-13718Research on improved genetic algorithm for job-shop scheduling problem based on association rulesQIAO Dongping, BAI Wentong, WEN Xiaoyu, LI Hao, Wang Yajing138-14819Influence of ceramsite pore on performance of concrete strength and chloride ion permeability resistanceYANG Jianhui, FANG Bin, GAO Tengfei, YU Jianyu149-15520Study on infrared radiation characteristics of layered gneissYAN Shunxi, HUANGFU Run, WANG Xiaolei, JIANG Pengcheng, ZHAN Sibo156-163 