诱导不等式和诱导相关度量

本文主要用诱导不等式的方法,得出了关于两个随机向量的协方差不等式,并由此引导出新的相关性的度量的意义,作为随机变量之间的相关系数的一种推广形式。     

用OOP编程对空间桁架内力进行分析

介绍了空间桁架内力计算方法和采用位移法编制的空间桁架内力分析程序流程图，结合实例阐述了面向对象语言Visual C 在空间桁架内力分析中的应用。     

Kinetic studies on the single electron transfer reaction between 2, 2, 6, 6-tetramethylpiperidine oxoammonium ions and phenothiazines: the application of Marcus theory

Electron transfer reactions take place readily between 2, 2, 6, 6-tetramethylpiperidine oxoammonium ions (1a, 1b) and phenothiazines (2a—2g), giving corresponding nitroxides (3a, 3b) and phenothiazine radical cations (4a—4g). The rate constants for the electron self-exchange reactions between 1 and 3, as well as between 2 and 4, are determined by EPR and ~1H NMR line-broadening effect in acetonitrile. By application of the Marcus theory, the kinetics of the cross-exchange reactions between 1 and 2 is studied.