Abstract:The basic state of pre bending prestressed reinforced concrete beam which is a new structure is introduced.The application of pre bending beam in the junction of ring road and Shaoshan Road in Changsha city is compared and analysised with economic benef

Abstract:The asymptotic and oscillatory behavior of n th order forced delay differential equations is studied.A suffcient condition is obtained,under which all solutions of equation are oscillatory for n even,and every solution of equation either oscillator

Abstract:This paper introduces a set of self made discharge device,a continuous real time inlet sampling device and an improved inlet sampling interface card of gas chromatographic mass spectrometer which can determine the transient on line components of gases

Abstract:The preparation method on catalyst for liquid phase oxidization of benzene to phenol with one step process is studied.The catalyst activity in the process is appraised.The rules of reaction temperature and the time influencing the process are investigate

Abstract:A new intellectualized corrosion monitor for the manufactured equipments is introduced.It combines single chip microcomputer technology with coulostatic method.The portable apparatus was carried out in the laboratory and a factory.The checking results sh

Abstract:在０．０５０ｍｏｌ／Ｌ ＨＣｌ和０．０１５ｍｏｌ／Ｌ ＫＮＯ３溶液中，安定在碳糊是极上于－０．７７Ｖ左右产生一灵敏的吸附阴极溶出伏安峰。线性范畴为１．０×１０＾－７￣４．０×１０＾－５ｍｏｌ／Ｌ，检测下限为５．０×１０＾－８ｍｏｌ／Ｌ，测定了血清中的安定含量，结果满意，循环伏安实验结果证实安定在碳糊电极上的吸附为反应物吸附。

Abstract:Some chemical reactions,such as the reaction of C 60 and metal,oxidation reduction reaction,addition reaction,replacement reaction and polyreaction are discussed.

Abstract:The paper presents a numerical analysis method based on flow continuity for analyzing pressure of oil film bearing.The method is simple in mathematics and meaning in physics.The method is suitable for numerical analysis of oil film bearing under the condi

Abstract:The various factors leading to bus front tire wear are analysised.Taking model PK6970 bus as example,some effective improvement methods to decrease the tire wear are provided.

Abstract:It is difficult to design triangle surfaces on autobody surface.first,a brief introduction to the methods usually applied in the design of triangle surfaces on autobody surfaces is given.Then,a simplified model on rectangular degradation surfaces is set u

Abstract:A nonlinear characteristic of taper leaf springs is presented by using the model of curved beam and the principle of virtual force.

Abstract:Based on the matrix norm and discrete time Lyapunov theorem,this paper proposes some criterion for the closed loop asymptotic stability of discrete time state feedback controllers with control input subject to nonlinearity.

Abstract:Considering the deficiency of Traditional Genetic Algorithms(TGA)in solving combinatorial optimization,a Partheno Genetic Algorithm(PGA) is proposed.PGA does not use crossover operators of TGA,while use gene exchange operators that have the same function

Abstract:Network topologic method is adopted to resolve the transient temperature field in armature of universal motor under the rated votage's locked rotor condition,and concrete realizing method is given out.The results show that network topologic method is con

Abstract:Firstly commodity character of electric power is discussed,and the structure and setting way of spot price in electric power market is analyzed.Finally,the paper sets forward newly control model of spot price.

Abstract:The dynamic lumped heat and moisture balances of indoor air involving moisture absorption and desorption by building interior materials have been modeled and indoor air humidity conditions and space cooling load have been simulated.The simulated results s

Abstract:The frequency dependence of the dynamic impedance of soil results in the fact that the stiffness and the damping matrix of the motion equations of soil structure systems are the functions of the motion frequences.The effect of an approximate method for

Abstract:The basic components of a optimal control system for water distribution network are discussed.Examined components include hydraulic network models,demand forecast models and optimal control models.Current optimal control methodologies are classified into

Abstract:首次把系统级故障诊断中的集团概念引入Ｃｈａｗ＆Ｈａｋｉｍｉ模型中，并由此对满足Ｋ（Ｇ）≥ｔ的ｔ－可诊断系统提出ｔ－可诊断算法，对任意测试图首次通过求构造函数最小值的方法得到最优诊断算法。

Abstract:An environmental input output model is introduced to the regional solid waste management sectors.This model can reflect the direct and indirect effects of regional solid waste generation and the specific relationships to the development of a regional eco