On the basis of immune algorithm, the authors propose a new method of text categorization called clonal selection algorithm based on antibody density.

Through screening concentration of kanamycin and hygrimycin from culturing explants of Isatis indigotica Fort, the result showed that resistance concentration is different from different explant.

Through screening concentration of Hygrimycin and Kamamycin on millet explant, the result showed that resistance concentration is different from different millet explant.

By bench scale and pilot tests using PAC and PAM as agents for Wool Scouring Effluent(WSE),the effect of influent density on the flocculation process was investigated.