PHYSICAL SUBALGEBRA CHAINS IN A SEMISIMPLE LIE ALGEBRA

Using the defining matrices of A_1 in classical algebras A_n, B_n, C_n and D_n, deduce the embedding indices of the physical A_1 algebra in classical algebras, The Ginocchio so (8) model is as an example.     

我国南方九孔鲍工厂化养殖可持续发展的探讨

综述了九孔鲍工厂化养的现状和存在问题，并对九孔鲍养殖业走出困境，恢复持续发展提出四点看法：１）减少污染，保持良好的生态环境；２）提倡养殖废水的综合利用；３）加强的鲍的健康苗的种培育及交育种研究工作；４）加强鲍病的综合防治。     

行政自由裁量权之程序控制

行政自由裁量权与行政执法密不可分。合法、合理地运用行政自由裁量权是建设法治国家的根本保证。从程序层面来探究如何合理规制行政自由裁量权．对进行法治国家的建设有重要的实践意义。     

IM型参考咨询工具的研发——基于图腾图书集成管理系统

为了满足新形式下参考咨询需求，充分保障图书馆参考咨询工作服务，本文在图腾图书集成管理系统数据库基础上，通过VB、PHP等开发工具，建立IM型参考咨询系统．该系统实现了咨询者与咨询员之间即时讯息交流，增强了信息参考咨询效果．     

高熵合金及其相关复合材料的粉末冶金综述

High-entropy alloys (HEAs) have attracted increasing attention because of their unique properties, including high strength, hardness, chemical stability, and good wear resistance. Powder metallurgy is one of the most important methods used to fabricate HEA materials. This paper introduces the methods used to synthesize HEA powders and consolidate HEA bulk. The phase transformation, microstructural evolution, and mechanical properties of HEAs obtained by powder metallurgy are summarized. We also address HEA-related materials such as ceramic–HEA cermets and HEA-based composites fabricated by powder metallurgy.     

多节挤扩支盘灌注桩在高层建筑中的应用

分析了支盘的受力特点及多节挤扩支盘桩在成桩过程中的影响因素、施工要点,并对比其经济价值.结合工程实例,介绍了在高层建筑的桩基施工中采用多节挤扩支盘灌注桩的施工技术.     

服务流程对提高4S店售后服务客户满意度的影响

通过对4S店服务流程的详细分析,使得我们认识到通过认真执行服务流程的每个环节这一基本服务要求,对提高客户满意度起着十分关键的作用。     

奥迪轿车新型数据总线及数据传递特点

文章以奥迪A8车型为例,介绍并分析了在CAN总线基础上采用的新型数据总线技术及其特点,对了解使用奥迪系列轿车,特别是对其进行故障诊断时提供帮助.     

基体改进效应电热原子吸收法测定海水中铝

文中提出不同作用机理的双基体改进剂用于电热原子吸收法,建立直接测定海水中铝的方法.EDTA铵盐、氯化镁双基体改进剂有效地排除海水基体和微量元素干扰,测定铝的灵敏提高五倍以上。用标准曲线法计算铝含量,回收率为93.7—104.3％,相对标准偏差为2.6％,检出限为0.9μg/1.可分别测定铝总量,颗粒志铝及总溶解志铝.     

Biosynthesis of selenosubtilisin: A novel way to target selenium into the active site of subtilisin

Glutathione peroxidase （GPx, EC1.11.1.9）, an important anti-oxidative selenoenzyme, can catalyze the reduction of harmful hydroperoxides with concomitant glutathione, thereby protecting cells and other biological issues against oxidative damage. It captures considerable interest in redesign of its function for either the mechanism study or the pharmacological development as an antioxidant. In order to develop a general strategy for specifically targeting and operating selenium in active sites of enzymes, the catalytically essential residue selenocysteine （Sec） was first successfully bioincorporated into the catalytic center of subtilisin by using an auxotrophic expression system. The studies of the catalytic activity and the steady-state kinetics demonstrated that selenosubtilisin is an excellent GPx-like biocatalyst. In comparison with the chemically modified method, biosynthesis exhibits obvious advantages： Sec could be site-directly incorporated into active sites of enzymes to overcome the non-specificity generated by chemical modification. This study provides an important strategy for specifically targeting and operating selenium in the active site of an enzyme.