单走廊办公用楼改建为清洁级动物实验室的探讨

为了提高动物实验水平 ,我所将原单走廊办公用楼改建为符合国家标准的 114m2 的清洁级动物实验设施 ,并且通过了北京市实验动物管理委员会的认证 ,为单走廊办公用楼改建为清洁级动物实验室开创了新的模式     

一种新的多准则分类方法及其在电能质量综合评估中的应用

针对电网中不同监测点电能质量的综合评估问题,在传统的UTADIS(utility additives discriminates)方法基础上,提出了一种UTADIS-like方法。该方法将等级界限看作是各指标效用的分段节点,利用决策人或专家已有的经验信息,建立了一个线性规划模型,计算出不同节点的效用值;进而对待评监测点进行分类评级。最后,将该方法应用到含有9个重要指标的电能质量综合评估问题中,对几个监测点的电能质量进行综合评级。结果表明,该方法能有效地评估电能质量的等级,具有一定的可行性。     

A Convenient Preparation of Enantiopure 1, l'-bi-2-naphthols via an Inclusion Complexation in the Solid State

Inclusion reaction of racemic 1, l'-bi-2-naphthol and (S)-proline was examined under the solid state and the solid-liquid conditions. The results indicated that a solid mixture of racemic 1, l'-bi-2-naphthol and (S)-proline in a 1 :1 molar ratio was kept at 50-80 C for 3-4 h, followed by treatment with benzene to give an insoluble solid and a benzene solution, from which (S)-(-)- and (R)-(+)-1, l'-bi-2-naphthols of a modest level of optical purity were obtained. After "kinetic" crystallization, both essentially enantiopure iso-mers were provided in 15%-35 % overall yields, respectively.     

A convenient preparation of enantiopure 1,1′-bi-2-naphtholsvia an inclusion complexation in the solid state

Inclusion reaction of racemic 1,1′-bi-2-naphthol and (S)-proline was examined under the solid state and the solid-liquid conditions. The results indicated that a solid mixture of racemic 1,1′-bi-2-naphthol and (S)-proline in a 1∶1 molar ratio was kept at 50–80 °C for 3–4 h, followed by treatment with benzene to give an insoluble solid and a benzene solution, from which (S)-(−)- and (R)-(+)-1,1′-bi-2-naphthols of a modest level of optical purity were obtained. After “kinetic” crystallization, both essentially enantiopure isomers were provided in 15%–35% overall yields, respectively. Foundation item: Supported by the National Natural Science Foundation of China (29972033) and the Key Science Research Foundation of Hubei Province (891P1305) Biography: Shan Zi-xing (1945-), male, Professor, research direction: asymmetric synthesis.     

Solution of Cauchy's Problem for Wave Equations in Higher Space Dimensions by Means of D'Alembert's Formula

A simple method for solving Cauchy's problem of wave equations in higher space dimensions with initial condition of separated variables, has been given by using D'Alembert's formula and some examples have been shown.     

不同环境条件下水稻叶片中叶绿体内碳酸酐酶活性的变化

以水稻(Oryza．Sativa L．)为材料,在不同光照、高盐、高温及缺N、K培养等条件下研究碳酸酐酶活性的变化。结果表明;在16μmolES^-2-64μmolES^-2。光强范围内,随着光照的增加,碳酸酐酶活性并无明显的变化．在高盐逆境条件下碳酸酐酶活性降低2-3倍,在高温逆境条件下碳酸酐酶活性降低了2～4倍,在缺N培养条件下碳酸酐酶活性降低了7-8倍,在缺K的培养条件下碳酸酐酶活性降低了2—3倍。     

Web模式下的医院网络管理信息系统

以一个小型医院为实际案例,比较了Ｗｅｂ模式下的网络管理信息系统和以往客户机／服务模式下的网络管理信息系统的区别,说明了Ｗｅｂ模式的巨大优点。并结合实际情况,详细说明了该系统的结构及所需的关键技术。     

质粒消除选育苏云金杆菌杀虫菌株

利用 4 2℃高温及其与 SDS复合消除质粒法处理本室分离保存的 80 10、WB2、WB3、WB6 4菌株 ,利用小菜蛾对突变株进行生测筛选 ,获得一高毒力菌株 TS16 ,其小于 2 Kb的质粒带丢失 ,6 .6 Kb的质粒带明显变淡 ,毒力比原菌株提高 50 %左右。室内摇瓶培养基的筛选表明 ,其发酵产孢量主要受 C、N源影响 ,无机盐影响较小     

2n端口旋转器和反照器的级联与直积构造

证明了2n端口线性变换器能分解为2n端口旋转器、变标器和反照器的适当组合的级联.提出用二端口旋转器和反照器传输参数矩阵直积构造2n端口旋转器和反照器传输参数矩阵的方法.     

带有逆断面的正则半群研究概述

带有逆断面的正则半群是一类非常重要的正则半群 ,对它的研究始于 1 982年。本文对十八年来国内外对它的研究作一综述。