答案A堆密度 答案B真密度 答案C粒密度 答案D高压密度

Abstract: Several 13-alkyl substituted analogs of berberine and palmatine were found to be highly active against two types of Staphylococcus aureus(SI and S2)of different origin. The most active 13-hexylberberine was 8 times more active(against SI)and the same order active(against

Antibiotic drugs Among the hundreds of compounds produced by microorganisms that have inhibitory action on other microorganisms, only a relatively small number have a favorable therapeutic index. These are the clinically useful antibiotics. In the present discussion, particular attention will be paid to the potency, antibacterial spectrum

Gonorrhoea What is gonorrhoea? Gonorrhoea is a yenereal disease caused by the bacteria Neisseria gonorrhoeae. The disease most frequently 15-25 affects 15-25-year-olds, although the number of cases has fallen in recent years. How do you contract gonorrhoea? Gonorrhoea is mainly transmitted through sexual contact. However, mothers infected with gonorrhoea can also

How does it work? Ofloxacin belongs to a group of broad spectrum antibiotics called the quinolones. It works by entering the bacterial cell and inhibiting a chemical called DNA-gyrase which is involved in the production of genetic material (DNA). This therefore prevents the bacteria from reproducing

性质 一、酸碱两性既含有酸性的酚羟基,又有碱性的叔氨基团 二、易被氧化成伪吗啡(双吗啡)和N-氧化吗啡 酸性条件下稳定,PH3-5

先导化合物的发现 (Discovery of Lead compound) 新药开发的基本途径与方法 之 药物分子设计(Mo1ecu1a《drug design)是指通过科学的构思和理 性的策略,构建具有预期药理活性 的新化学实体(new《chemica1 entities)的分子操作

药剂学是研究药物剂型及制剂的一门综合性学科 其主要研究内容包括:剂型的基础理论、制剂的生产 技术、产品的质量控制、合理的临床应用 研究、设计和开发药物新剂型及新制剂是其核心内容。 随着科学技术的飞速进步,特别是数理、生命、材料、电子和信息等科学领域的发展和信息等科学领域的发展和创造,极大地推动了药剂学的发展,使药剂学从经验探索阶段入了科学研究阶段

一、按溶解性质分 A.脂溶性:维生素A、D、E、K B.水溶性:维生素B1、B2、B、B

中国药科大学：《药物化学》PPT教学课件_四环素类抗生素 Tetracycline Antibiotics、氨基糖甙类抗生素