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浅草漫漫银虫 (小有名气)
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[求助]
外文翻译，求助
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| Unfortunately, we could not obtain any induction of stereoselectivity because of the backbone chirality of the chitosan polymer. The present chitosan hydrogels behave more like a supported base. Higher accessibility of the amine functional groups in the hydrogel, which has a porous network, unlike to the commercial material and dried chitosan beads, may be responsible for the higher activity observed.Accessible free amines were determined by reacting chitosan with salicylaldehyde to form a Schiff base complex, and analysing the remaining unreacted salicylaldehyde by GC, using nitrobenzene as an internal standard. |
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2楼2014-08-10 13:30:46
cmds1907
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