1Research on shear wave velocity and predominant period of soils of Jiaozuo urban districtPAN Guo-ying, XU Zhao-ping, ZHAO Yuan-song1-42On the essential principle of the dynamic testing piles by PIT and its several problems in the engineering testingWAN Shi-ming, GAO Zhong-he5-83The content and precise definition of cohesionZHANG Chun-ming, DU Yun9-104Fuzzy distinguishing of the style of machine working mining for gently inclined thin seamCHEN Liang-peng, WANG Wei-jun, ZHU Chuan-qu11-145Improvement on Shimada′s public-key cryptosystemLI Zi-chen, ZHANG Juan-mei, YANG Li-shen15-186The effect of D-quick-setting additives on strength of cementFAN Wen-xi, XU Yong-an, ZHENG Yong-bao19-207Studies of the vulcanization joints of the steel cord conveyor beltsZHANG Guo-yue, ZHANG Rui-cai, FU Bao-quan, MIAO He-jun, ZHANG Yong-ling, CAI Jie21-248The causes of the beams and slab cracks of the bathrooms and the reinforcement methodsZHANG Yu-bo, WAN Fu-cang25-279The permanent locking wellhead performances of the auxiliary shafts of Xingdong coal mineLI Yin-qiao, HAN Xiao-dong28-3010The application of singlechip advanced language-Franklin C51 in developing the program of displaying Chinese characters on LCDXIA Dai-lin, YU Ben-sheng, JIN Hai-liang, JI Chun-he31-3411As any form profile gear numerical control machining theory and computer simulate studyJI Xiao-hong, CUI Ying35-4012An application of computer control system to the production of alumina ripe staff agglomerationQIU Yuan, ZHAO Yang41-4413Measurement and analysis of local resistance on flow section expanded and narrowed suddenlyZHOU Ai-ping45-4914On construction of Pn matrix-gather with different-trace and establishment of MD[Pn]ZHENG Yu-ge, HAO Qin-dao, ZHENG Yu-min50-5315On the application of the analytical hierarchy process to the market comparison approachJIN Hai-liang, LIU Wen-kai, CHU Hai-lin, ZHANG Guang-sheng54-5816Discussion on the error bound of underground trigonomertrical levelingLI Wan-mu, WANG Shao-an59-6117The feature of talcum mines in Yexian county and its development and utilization studiesHAN Xing-xia, LIU Yu62-6518Seismic response analysis of the high pier of long span T -type rigid bridgeLAI Yong-xing, CHENG Li-she, ZHENG Guan-sheng66-6919Phase formation during aging of ZA27 alloy at 100℃WANG Kuang-fei70-7220Studies of the mine gas from urban mixed gases and its utilizationGUO Feng, JI Jun-hong, HUO Peng73-77 