北方铜业冶炼厂硫酸系统风机单机运行实践

详细介绍了S1200-16型鼓风机在北方铜业冶炼厂的使用情况，以及S1200-16型鼓风机的结构、技术参数，提出了为确保风机的正常运行所采取的处理措施。     

顺铂与DNA相互作用下的CD谱的测试

本文报导了ＤＮＡ与顺铂相互作用下的ＣＤ谱的测试过程及实验结果，并对作用机理做了初步分析．     

英语构词活前缀anti-的剖析

英语活前缀anti-是现代英语中构词力最强的词缀之一。随着其构词力的不断增强，这个前缀的构调特点有了新的变化，语义范围也得以进一步的扩展。本文对前缀anti-的构词特点与变化进行探讨，对其语义特点和范围进行研究，以阐明这个前缀的应用规律，便于人们在阅读、翻译和撰写英语文章时，能正确理解和运用这个前缀及其派生词。     

茴香酸乙酯的合成

从茴香油生产茴香醛的废渣、废液中提取副产品茴香酸，合成茴香酸乙酯。对合成条件进行了研究，取得了满意的结果。     

无机离子在硅胶薄层上的色谱行为研究

以甲基异丁基甲酮（ＭＩＢＫ）－甲酸（ＦＡ）为流动相，对一些无机离子在硅胶薄层上的色谱行为进行了研究，得出了无机离子的Ｒ＿Ｆ值与流动相中强极性溶剂甲酸的体积百分浓度Ｃ＿ｐ之间的关系以及所用流动相的溶剂性质参数Ｂ值．利用该流动相体系对部分多元离子混合液进行了分离．     

A new indolic antiauxin, α-(5,7-dichloroindole-3-)isobutyric acid: its chemical synthesis and biological activity

Summary A new potent antiauxin, -(5,7-dichloroindole-3-)isobutyric acid has been synthesized and shown to inhibit auxin-mediated elongation ofAvena coleoptiles and to stimulate root growth of rice seedlings. Its activity is stronger than -(p-chlorophenoxy)isobutyric acid and is comparable to that of 2,3,5-triiodobenzoic acid, which are typical antiauxins.     

Comparative aspects of structure and action of molluscan neuropeptides

A number of neuropeptides were isolated from the ganglia and muscles of molluscs, and their actions were examined. Diverse neuropeptides, in addition to several classical neurotransmitters, were suggested to be involved in the regulation of the anterior byssus retractor muscle ofMytilus. A wide structural variety of members of theMytilus inhibitory peptide family was observed in each of the generaMytilus, Achatina andHelix. Gly-Trp-NH₂, the C-terminal dipeptide fragment of the neuropeptide AGPWamide, showed a more potent action than the parent peptide in all of the muscles examined. Peptides related to some molluscan neuropeptides were found to be distributed interphyletically. Some neuropeptides containing ad-amino acid residue were found inAchatina andMytilus. These aspects of molluscan neuropeptides are thought not to be exceptional.     

Biosynthesis of 1-aminocyclopropanecarboxylic acid: Steric course of the reaction at the C-4 position

Summary Under the action of the appropriate synthase from ripe tomatoes a 11 mixture of (3S, 4R)-[3,4-²H₂] and (3R, 4S)-[3,4-²H₂]-(2S)-adenosylmethionine is transformed into a 11 mixture of the two meso forms of [²H₂]-1-aminocyclopropanecarboxylic acid, a result which proves the operation of an inversion mechanism and which is consistent with direct nucleophilic displacement of the leaving group in the substrate.     

微型计算机中西文表格自动处理软件的算法设计

本文讨论了在微机中西文表格自动处理技术中一些特殊功能的算法设计,分析了设计思想,提供了部份实用算法,并对某些算法的时间复杂度进行了评述。这些算法均已在本校研制的“IBM-PC/XT微型机中西文数据库管理系统”的表格自动处理软件中实现,并已应用于百多家企、事业单位的计算机管理系统中。