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This paper aims to provide valuable experience to the laboratory of university by studying on the construction of China national teaching demonstration centre for chemistry experiment. This paper introduced experiment teaching, experiment management, experiment technician, experiment environment, and demonstration and diathermaneity of demonstration centre. For construction of China national teaching...
The nature of catalase, immobilized in sodium carboxymethyl cellulose (CMC) and poly(n,n-dimethylaminoethyl methacrylate)(PDM), were primarily studied. The results showed that the CMC/PDM capsules, which were made by 2.0% of mass concentration of CMC and 25% of mass concentration of PDM, were the smoothest, the hardest, and the most effective. The optimum pH and temperature were 7.0 and 40°C respectively...
6-Carboxychitosan (6-CC), prepared by selectively oxidization of chitosan powder with NO2 gas in glacial acetic acid, was sulfated with chlorosulfoni acid in formamide to give sulfated 6-carboxylchitosan (S6CC). In S6CC, -SO3H groups were primarily grafted on -NH2, next on secondary -OH, and thirdly on -CH2OH positions. Sodium salt of S6CC (Na-S6CC) was more similar with heparin sodium than sulfated...
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