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浏览/检索结果: 共3条，第1-3条 帮助 限定条件 学科主题：chemistry    内容类型：期刊论文     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Directly suspended droplet microextraction combined with single drop back-extraction as a new approach for sample preparation compatible with capillary electrophoresis 期刊论文 TALANTA, 2011, 卷号: 83, 期号: 5 - 收藏  |  浏览/下载：1/0  |  提交时间：2014/12/05 Directly suspended droplet microextraction  Single drop back-extraction  Capillary electrophoresis  Alkaloids  Urine samples   Studies on the separation and extraction of alpha-amylase and proteinase from fermented liquor of alpha-amylase by aqueous two-phase partitioning 期刊论文 CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE, 1998, 卷号: 19, 期号: 3 - 收藏  |  浏览/下载：3/0  |  提交时间：2014/12/05 alpha-amylase  proteinase  aqueous two-phase system  polyethylene glycol  extraction  back-extraction   Large artificial neural networks applied to the prediction of retention indices of acyclic and cyclic alkanes, alkenes, alcohols, esters, ketones and ethers 期刊论文 COMPUTERS & CHEMISTRY, 1998, 卷号: 22, 期号: 5 - 收藏  |  浏览/下载：4/0  |  提交时间：2014/12/05 artificial neural network  extended delta-bar-delta back propagation  gas chromatography  retention index  molar volume  boiling point