塑料注射模具冷却水道CAD

介绍了塑料注射模具冷却水道的计算机辅助设计。本软件为Ｐｃ级，主要应用传热学、化工原理的基本原理，开发设计了模具冷却水道计算模块，并对模具的冷却系统进行设计。     

具有转向点的积分微分方程奇摄动非线性边值问题

本文对一类具有转向点的Volterra型积分微分方程奇摄动非线性边值问题,证明了解的存在性并给出了解的一致有效渐近估计。     

加强工科院校人文素质教育的思考

加强工科院校人文素质教育势在必行，为此，必须确立专业科技教育与人文素质教育并重的教育思想，重视人文素质教育，努力探索，并构建符合本校实际的人文素质教育的模式。     

块对称加速超松弛迭代法及其收敛性

给出了解线性代数方程组Ａｘ＝ｂ的一个新的迭代算法模型——块对称加速超松弛迭代法（ＢＳＡＯＲ迭代法），并在系数矩阵Ａ为块Ｈ－矩阵的条件下，证明了该模型的收敛性．在该模型中，对参数取特殊值可得到块对称Ｇａｕｓｓ－Ｓｅｉｄｅｌ迭代法和块对称ＳＯＲ迭代法等常用的块对称迭代算法，并且还可产生许多新的块对称迭代法．即事实上建立了块对称迭代法的一般性收敛理论．     

The strong cooperativity of dioxygen binding by dicobalt (II) diporphyrin compounds in nonaqueous solution at room temperature

Thermodynamic data were determined for the reversible binding of O₂ to two compounds of dicobalt(II) di(meso-tetra-phenyl)porphyrin derivatives with different lengths of diamidoaliphatic bridge (abbreviated to Co₂PP₈ and Co₂PP₄) in N,N-dimethylformamide at room temperature. The partial pressure of dioxygen necessary for half-oxygenation (P _1/2) and hill coefficient (n) at 298 K were determined as follows:P _1/2=54.2 kPa,n=2.0 for Co₂PP₈ andP _1/2=6.8 kPa,n=1.8 for Co₂PP₄, respectively. The rate equations of reversible oxygen binding by Co₂PP₈ were determined and the reaction path was proposed. The results of ther-modynamic and kinetic studies indicate that there exists strong cooperative effect during oxygenation of the compounds. The ESR observation reveals that the dioxygen complexes formed in the solutions are of superoxo (Co-O ₂ ⁻ ) type. Supported by the Research Foundation of the State Education Commission of China Zhou Xiaohai: born in 1962, Ph.D. Associate professor     

Studies on the reaction between Laccase ando-methoxyphenol by microcalorimetry

The reaction between Laccase ando-methoxyphenol have been studied by LKB-2107 batch microcalorimetry system. Thermodynamic parameters Δ _r H _m , ΔG _o , ΔG _T ^≠ and kinetic parameters (K _m ,k ₂) have been determined. The process of the reaction has been analyzed from changes in energy by using the transition state theory. Two methods for enhancing catalytic power of Laccase are proposed. The results shown that formation of an enzyme-substrate complex is “anticatalytic”. The enter and sole source of catalytic power is the stabilization of transition state; reactant-state interactions are by nature inhibitory and only waste catalytic power. Supported by the National Natural Science Foundation of China Wang Tianzhi: born in 1968. Ph D     

Collaborative applications based on the internet

The basic concepts of collaborative applications and some relevant aspects about network communications are introduced. With the examples of some collaborative applications developed by us, several technical problems about collaborative applications, such as loss of data packets, unknown IP address and timedelay, are discussed in detail. And the methods of solving these problems are also provided. Supported by International Cooperation Project (Japan, Jincheng Co. Ltd) Fang Rui: born in 1975, Graduate student     

岩爆条件下的开采技术

论述了在有岩爆危险的矿山所使用的采矿方法，并对岩爆的性质、危害、预报、防治作了较详细的阐述．为进一步开展岩爆研究，提供了有益的启示．