Abstract:得到了两个自共轭四元数矩阵和特征值的一个不等式，并指出和修正了ＨｏｒｎＲ．Ａ．和Ｊｏｈｎｓｏｎ Ｃ．Ｒ．在“矩阵分析”一书中关于Ｈｅｒｍｉｔｅ矩阵的特征值的定理中的一处错误。

Abstract:Taking poly(bis(p toluene sulphonate)ester of 2,4 hexadiyne 1,6 diol)(PDA TS) as example,the doping mechanism and conductive character for polymers with conjugated triple bond were studied in this paper.After comparing presented doping models of poly

Abstract:This paper gives the nonlinear fundamental equations of plane membrane acted under internal pressure.The approximate solution for rectangular plane membrane is solved by energy mothed.The exact solution for unlimited long strip plane membrane is obtained

Abstract:Based upon our previous work on the synthesis of the pure stage 1 FeCl 3 GIC,the experimental program of the synthesis of the pure stage 2 FeCl 3 GIC was designed.The influences of the reaction temperature,the ratio of C/FeCl 3 and the soaked time

Abstract:The new process,from the starting material N phenyl 2,6 dichloroaniline through chloroacetylation,cyclization and hydrolysis,gained 73 % total yield.It is comparably simple,with better quality of the product and much lower costs.

Abstract:以盆栽法研究了Ｄｅｎｄｒｏｎｔｈｅｎａ ｍｏｒｉｆｏｌｉｕｍ Ｔｚｖｅｌ，Ｓａｂｉｎａ ｐｒｏｃｕｍｂｅｎｓ，ｏｓａ ｃｈｉｎｅｎｓｉｓ Ｊａｃｑ等１０种植物对土壤Ｃｄ的吸收及其生物净化效应，试验结果表明：在每千克土壤（风干重）含Ｃｄ３０ｍｇ的处理条件下，短期内未发现植物生长明显受影响现象。在土壤－植物系统中，经过５０ｄ的植物吸收，土壤中的Ｃｄ下降幅度最小值为０．３５４２ｍｇ／Ｌ，最大值为６．３７

Abstract:利用κ－ε湍流模型对室内三维浓度扩散特性进行了数值预测，计算结果表明作者所提出的一种差分格式可以获得较好计算结果，并可防止出现“负浓度”和“数值扩散”现象。

Abstract:The latest development in China and abroad in computer simulation of working process of automobile airbag has been discussed, and the research character and key technology on these topics have been analyzed. Some opinions of future research in this field

Abstract:The composition and properties of plaster mould have been introduced,and the technological process and applied characteristics of plaster mould investment casting is discussed.When the technology is used to produce integrated,complicated and precise alumi

Abstract:According to the mathematical model of technological parameters and the optimal theory,based on the lowest roughness of surface and high efficiency,the grinding technological parameters was optimized.

Abstract:According to actual field instance of enterprise, a kind of real time supervision and management system based on C/S structure for industrial production process is presented.The analysis and design of this system are given with the example of some mill r

Abstract:We introduce a whole plan about how to develop the 3D plastic injection mould system with CAD . Through the specialized improvement of AutoCAD,the methods of automatical transform from plastic products size to cavity size,construcing the part storehouse a

Abstract:The effects of skewed slot angle on the starting torque of a single phase asynchronous motor are demonstrated by theoretic analysis and by experiments.Moreover,a method of choosing the proper skewed slot angle is raised through the example of 24/22 slot.

Abstract:On the basis of the optimization method of the parameters of energy dissipation braces,this paper discusses several forms of the objective function. The most appropriate form of the objective function is found through the analysis of an example. On the ot

Abstract:In order to trace the nonlinear equilibrium paths and to simulate the hysteretic curves of structure under cyclic loads,a general solution procedures for nonlinear equilibrium equations is suggested in mathematics by introducing a set of generalized const

Abstract:The continuous box bridge with bend and slope is computed using the spatial finit plate element method.The distribution laws of the stress components and displacement in every plate are presented.The dangerous regions in the birdge are analyzed.The analys

Abstract:In this paper,combined with advanced IC(image compression) technology,an IC system suitable for telescience environment is introduced.Because of the flexibility and high efficiency of this system,customers can set parameters freely in various applications

Abstract:The sorting problems often appear in production management system.In this paper,we discuss a class of sorting problems about assigning n tasks to m equipments on the basis of models which have been established for the sorting problems.We extend th