Fertility dynamics of three types of tea garden soils in western Sichuan, China von Yuan, D. (Sichuan Agricultural Univ., Chengdu (China). Coll. of Resources and Environment), Yang, D. (Dazu Urban Planning Bureau, Dazu (China)), Pu, G. (Sichuan Agricultural Univ., Ya'an (China). Coll. of Forestry), Zhang, Q, Chen, X, Peng, W, Sun, J, Xiong, S, Li, J

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Anti-cone-milling PDC drill bit von YAN JIZENG, LI SHIBIN, WANG QIANWEI, ZHANG LIGANG, ZHANG HUI, CHEN XIAOHUA, FENG YONGCHAO, LIU ZHAOYI, WANG XIANG, NIU SICHENG, YANG DAZU

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Well cementing device for well of well cementation circulation instrument and branch that uses this instrument von WANG JIAN, MEI JIE, ZHANG HUI, ZHAO WENBIN, NIU MENGMENG, YANG DAZU, DENG HONGLIN

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Insulating liquid film-builder and preparation method thereof von BU YUHUAN, YANG DAZU

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High Capacity Information Hiding Algorithm for DCT Domain of Image von Xie, Jianquan, Yang, Chunhua, Huang, Dazu

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A Large Capacity Blind Information Hiding Algorithm von Jianquan Xie, Chunhua Yang, Dazu Huang, Duosi Xie

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Visual dispatching command platform and talkback terminal von PENG WEI, WU YIFAN, LI DAZU, YANG CHANGQING, LI HUALONG, CHEN CONGMIN, WANG LONG

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