Abstract:In this paper we shall demonstrate that under certain conditions the three basis distribution models to describe the gap state density of a-Si,i.e.uniform distribution,exponential distribution and hyperbolic distrition are all equivalent,for calculating t

Abstract:with the exterior-penalty-function method,this paper presents a new method that decides the most unfavourable positions of livingsr loads on bridge and calculates corresponding transverse distribution coefficient by a compuer.The results obtained indicate

Abstract:In this paper,the microstrainer,which is researched and produced by the Department of Civil Engineering and the Mechanical Works of Hunan University and used as a filtration process in China waterworks practice since 1982. is described.A brief introduct

Abstract:This paper presents an active generation scheduling method,which takes the Loading rate into account.The optimization problem is solvd by the dual linear programming.The method proposed in this paper is reliable and flexible.It facilitates the programming

Abstract:In this paper,the coring and nonequilibrium eutectic formation and the peritectic reaction during crystallization as well as the spinodal decomposition and eutectoid transformation in solid state are investigated.The effects of some alloy elements on the

Abstract:Based on the analysis of electric conducting and heating mechanism of metallic materials,a kind of resistance wire microalloyed gray cast iron,whose specific resistance is close to that of Fe-Cr-Al or Ni-Cr resistance wire,is developed and applied to th

Abstract:In this paper,a new technology is introduced for making copper compression connecting ends,which are widely used in radio industry,instrument industry,mechanical and electrical installations and automation equipments.The products obtained are characteri

Abstract:In this paper,an equivalent circuit is proposed for T mutual inductance network.This circuit is used to get rid of the coupling in networks including T mutual inductance so that the circuit calculations are greatly simpli- fied.Applying this metheod to

Abstract:In this paper,a calculation method and the relevant plotting programs are proposed for the transformation of digital data to isograms and velocity vectors is the fields of thermal conduction and fluid flow.The application of this method to explain the c

Abstract:本文试图从理论上探讨人机工程学产生和发展的一些基本问题,以利于我国建立自己的人机工程学。本文就四个问题提出了一些观点:判断人机工程学产生的理论基点、人机工程学的综合化和分支趋势、人机工程学的系统科学化、人机工程学的高技术化。

Abstract:In this paper,the mineralogical constituents,the alkaline coefficients and the alumina-sulphur ratios of the sulphoaluminate cement clinker are designed in term of the chemical compositions of slag and the properties of the minerals in the clinker.Some

Abstract:In this paper,a new process for the catalytic chlorination of solid paraffin is investigated.The catalytic effectiveness of PC-04 catalyst on the chlorination of solid paraffin and the influence of different factors upon the catalytic reaction are exami

Abstract:In this paper,Navier's double triangular series method for rectangular plates with all edges simply supported is generalized to the geometrically nonlinear analysis of trapezoidal shallow shells.Under Margueree's assumption of shells,the order of differen