1Extraction and characterization of coal pitch from tar residue of rapid distillation of low rank coalYUE Jiaxing, ZHU Yaming, GU Zishuo, PENG Lichun, LIU Huimei, CHENG Junxia, ZHAO Xuefei1-9,202Research progress in extraction chemicals from coal tar by high-value utilization technologyCHANG Qiulian, HE Guofeng, CHEN Mingbo, SUN Hongxing, LIU Yewei, LIU Jinqiu, YAN Jian10-203Application advance of combined technology of Micro-Nano Bubbles and catalytic ozonationWANG Guanyu, KOU Lihong, LIU Ming, Li Lanting, WANG Hao, WANG Yaqiang21-28,384Study on the migration path of nitrogen in coal during O2/N2 and O2/CO2 oxygen enriched combustionWEI Yanrong29-385Application status of fixed bed dry bottom crushed coal pressurized gasification technology in ChinaGUO Liangyuan39-456Study on the influence of coal ammonia mixed combustion method and ammonia mixing ratio on fuel emission characteristicsGONG Yanyan46-52,607Study on the pyrolysis,gasification and combustion characteristics of Inner Mongolia Changtan coal by isothermal thermogravimetric methodWANG Xueyun53-608Study on coal ash viscosity temperature characteristics and regulation experiment for gasification coal in Shendong mining areaWANG Dongsheng61-65,709Comparative analysis of standard technical indexes of coal transportation antifreeze and snow-melting agentSHEN Dong66-7010Application and operational maintenance of integrated full-automatic sampling and sample preparation system for coalZHANG Zhifang, ZHANG Hongyue71-7811Research on the relationship between the stability and optimal storage time of reserve coal samples with different particle sizesHE Chengyou79-8512Experimental comparative study on determination of calorific value of coal by isothermal calorimetry and adiabatic calorimetryGONG Wanli86-90,9713Study on influencing factors of uncertainty of oxygen bomb thermal conduction in calorimeterWEI Jian, HUANG Chao, ZOU Lechun, SHEN Jing, YANG Yong91-97 