Ntrimethyl chitosan chloride, a partially quaternised derivative of chitosan, which is soluble in neutral and basic environment, can be used as an absorption enhancer of oral peptide drugs.
氯化N-三甲基壳聚糖是壳聚糖的部分季铵化衍生物，能溶于中性及碱性环境中，可作为肽类药物的口服吸收促进剂。
It is implied by the transient absorption spectrum that, under neutral and acid conditions, 4-chlorophenol is first transformed into OH-adduct, and then dechlorinates through further reactions;
用脉冲辐解方法得到的瞬态吸收光谱显示，在近中性和酸性条件下，4 氯酚主要经由4 氯酚的OH加合物进一步转化而脱氯；
The reaction from Light-Adaptation form to Dark-Adaptation form of neutral red-regenerated purple membrane(PM)and the light absorption change of bound neutral red in regenerated PM were studied.
研究了中性红再生紫膜从先适应状态到暗适应状态的反应及再生紫膜中中性红的光吸收变化。
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