糖类新的药用价值

糖在人类的健康和疾病过程中扮演重要的角色逐渐被人们所认识。越来越多来自生物技术学术界和产业界的研究人员开始加倍努力,以求了解糖的详细结构和活动性能,并将这些发现转变成新的药剂。     

伸缩方程Lpc解的讨论

研究一般扩张矩阵伸缩方程L^pc解的性质，相同分形中的选代函数系统构造tile和tiling性质，克服了通用方法中的不足，得到了这类方程存在紧支撑解的充要条件，从而推广了有关的结果．     

On the Foundations of Constructive Mathematics – Especially in Relation to the Theory of Continuous Functions

We discuss the foundations of constructive mathematics, including recursive mathematics and intuitionism, in relation to classical mathematics. There are connections with the foundations of physics, due to the way in which the different branches of mathematics reflect reality. Many different axioms and their interrelationship are discussed. We show that there is a fundamental problem in BISH (Bishop’s school of constructive mathematics) with regard to its current definition of ‘continuous function’. This problem is closely related to the definition in BISH of ‘locally compact’. Possible approaches to this problem are discussed. Topology seems to be a key to understanding many issues. We offer several new simplifying axioms, which can form bridges between the various branches of constructive mathematics and classical mathematics (‘reuniting the antipodes’). We give a simplification of basic intuitionistic theory, especially with regard to so-called ‘bar induction’. We then plead for a limited number of axiomatic systems, which differentiate between the various branches of mathematics. Finally, in the appendix we offer BISH an elegant topological definition of ‘locally compact’, which unlike the current definition is equivalent to the usual classical and/or intuitionistic definition in classical and intuitionistic mathematics, respectively.     

论大学思想政治教育网站建设

网络的出现已影响到青年大学生的世界观、人生观、价值观的形成，这是一种不以人的意志为转移的新的社会现象。为了应对网络给青年学生带来的负面影响，应该以网络手段解决网络带来的学生思想政治教育问题的观点，并结合工作实际讨论在思想政治教育网站建设中需要注意的问题。     

基于对偶基的比特并行算法实现RS编码

以DVB-C系统中的RS编码为例，参照Berlekamp比特串行乘法器，提出了一种基于对偶基的比特并行乘法器的方法来实现RS编码器，可以达到较高的吞吐率，从而可以采用FTGA／CPLD实现高速RS编码。     

大型径向和推力滑动轴承试验台结构设计与应用

对径向滑动轴承、推力滑动轴承试验台以及实验台的结构设计、试验范围、功能和工业产品实验进行了介绍。该试验台在滑动轴承的实验研究中得到了很好的应用。     

双机串口互联实现GPS数据的模拟读取

提出了一种利用两台以串口互相连接的计算机来实现对GPS全球定位系统定位信息的模拟发送和接收的方法。     

~(13)C-NMR研究溶液法丁苯共聚物的微观序列

本文利用~(13)C-NMR,对“准”稳态下以n-BuLi-THF引发的丁苯共聚物的序列结构进行了研究。获得了THF与n-BuLi在不同比例下产物的数均嵌段长度、混合单体嵌段长度和交替结构的变化情况。     

ICP-AES法测定录音带磁粉中七种痕量元素

用顺序ICP光谱仪测定录音带磁粉中Ca、Mg、Cr、Co、Mn、Zn和Ti等痕量元素。样品用H_2SO_4/H_3PO_4/HNO_3混合酸分解。利用仪器的扫描程序,确定被测元素的分析线及背景校正点波长,并求干扰元素校正系数。估计了七个元素的检出限。测得平均回收率在90～104%之间。     

Goniothalamicin and annonacin: Bioactive acetogenins fromGoniothalamus giganteus (Annonaceae)

Summary Using brine shrimp lethality for activity-directed fractionation, goniothalamicin (I), a new tetrahydroxy-mono-tetrahydrofuran fatty acid -lactone (acetogenin), has been isolated from ethanolic extracts of the stem bark ofGoniothalamus giganteus Hook. f., Thomas (Annonaceae). This novel compound was found to be cytotoxic and insecticidal and inhibited the formation of crown gall tumors on potato discs. Annonacin (II), the only other reported mono-tetrahydrofuran acetogenin, was also isolated; the previously reported 9ASK (astrocytoma reversal) activity ofII was confirmed, andII is now also found to be weakly active against 3PS murine leukemia.