利用絮凝剂、PH调节以及D101和聚酰胺树脂纯人银杏黄叶,制备银杏叶黄酮醇甙,得率约1.3%,纯度大于24%。 王成章,郁青 - 《中国医药工业杂志》 被引量: 52发表: 1998年 芽变黄叶银杏光合和叶绿素荧光特性 为探究芽变黄叶银杏与普通银杏的光合生理特性,以芽变黄叶银杏母株在3个发育时期的黄叶和绿叶为材料,研究叶中...
The system comprises a plurality of circuits for modifying the image to be processed, and a plurality of circuits for determining characteristic magnitudes of the image to be processed. Each (3) of the circuits is provided with circuits (33, 32, 64) for testing its correct operation. A micro...
为了提高天然产物Palmarumycin B_(6)的生物活性,通过取代四氢萘酮烯醇醚和1,8-二羟基萘的缩酮化反应以及吡啶重铬酸盐和过氧叔丁醇参与的苄位氧化反应作为关键步骤完成了多个Palmarumycin B_(6)A环含氯和含氟类似物的合成,它们的结构经过^(1)H NMR,^(13)C NMR和HR-ESI-MS的表征.对它们的杀蚊活性进行了...
申请(专利权)人: INNOVIT PTY LTD 发明人: CB Thinh 摘要: A kind of sorting articles electronic directory, this method include incidence relation identifier and a pair of of article, and wherein the relation identifier specifies the relationship between classification the pair item.收藏...