STABILITY CRITERIA FOR A CLASS OF UNCERTAINSYSTEMS WITH TIME—DELAY

Some stability criteria are obtained for a class of uncertain systems with time-delay usingLyapunov functional and analytic techniques. It is easy to check the criteria by making use of theboundedness of the uncertainties.     

果胶溶液粘度的研究

本文研究了浓度、温度、酸度、Ｃａ２＋、糖等因素对果胶溶液粘度的影响，在酸度为０．９ｇＨＣｌ／１０Ｏｍｌ下来胶容液的粘度最低、而Ｃａ２＋，糖在研究的范围内对果胶溶液粘度的影响不大。     

关于原子光谱项的推导

本文介绍了几种推导原子光谱项的方法,并对其中某些方法作了改进,使得推导工作得以简化.     

现代颚式破碎机设计与展望

根据现有的文献记载,作者对颚式破碎机的设计理论及应用、机型及其系列、结构和创新等进行了较全面的回顾与展望。     

Iterative Method for Constructing Complete Complementary Sequences with Lengths of 2^mN

Complete complementary sequences are widely used in spectrum spread communications because of their ideal correlation functions. A previous method generates complete complementary sequences with lengths of N^nN （n,N ∈ Z^＋）. This paper presents a new iterative method to construct complete complementary sequences with lengths of 2^mN （m,N ∈ Z^＋）. The analysis proves that this method can produce many sequence sets that do not appear in sequence sets generated by the former method, especially shorter sequence sets. The result will certainly increase the application of complete complementary sequences in communication engineering and related fields.     

次子空间的同构

引入了次子空间同构的概念，并得到次子空间同构的充要条件．     

仲丁醇,水,碳四烃高压液液相平衡系统的气相色谱分析

本文通过对仲丁醇、水、碳四烃的气相色谱分析方法的研究，确定了气相色谱柱及其分析该系统时的条件，测定了成份分析的校正因子，为仲丁醇、水、碳四烃三元体系的高压液液相平衡研究提供了可靠的方法，也为生产过程中的分析提供了方法。     

原子外层空轨道相对最稳定顺序及周期性规则

本文提出原子外层空轨道相对稳定性可作为电子填充的粗略判据;给出由中性原子轨道能数据直接导出原子外层轨道相对最稳定顺序的图表及周期性规则;用以简明、清晰、合理地推引解释元素基组态和解释元素周期律。提出在中心势场模型基础上推引全部元素基组态的方法。