壳聚糖／聚丙烯酸钠聚离子复合膜的醇－水渗透汽化分离性能

研究了壳聚糖－醋酸溶液与聚丙烯酸钠溶液形成的复合膜用于水－乙醇混合物的渗透汽化分离，在膜组成Ｃ＝０．８０时，分离系数出现最大值，对异丙醇－水体系的分离系数为∞。溶解－扩散过程对渗透汽化过程起着重大作用。由－ＮＨ＋３…ＯＯＣ－交联的聚离子复合膜对醇－水体系具有稳定的分离性能。     

超滤装置自动控制系统的研制

本文介绍了一种用于纯水制备的超滤装置的自动控制系统，该系统在设备在日常操作，超滤膜的清洗等方面不仅大大减少工作强度，提高了工作效率，而且延长了超滤器件的使用寿命，取得较好的经济效益。     

关于决策支持系统的结构与进化

本文在总结作者开发决策支持系统的实践经验的基础上，从ＤＳＳ的结构分析入手，探讨了ＤＳＳ的进化问题，首先通过软件开发方式，程序设计风范，人工智能道路和系统科学发展等方面的深入剖析，指出了进化能力的强弱是ＤＳＳ成败的关键。其次展开了关于ＤＳＳ结构的研究，提出了ＤＳＳ的外延结构和内涵结构的新概念并进行了比较。随后讨论了ＤＳＳ的进化问题，分析了传统的第一代决策支持系统存在的缺陷，阐述了第二代和第三代决策支     

基于DOS的多窗口系统的设计与实现

窗口系统是人机交互的基本环境，与目前ＤＯＳ上的窗口系统相比，本文力求突出高效，低开销，具有多任务模拟能力，满足可移植性，实用性和开放性目标，本文首先提出一个基于ＤＯＳ的多窗口系统ＷＩＮＤ的总体设计，采用面向对象技术，讨论了其多窗口管理机制的特征和方法，并设计和实现了该系统相关的基本工具，最后通过编程环境、界面风格和应用实例等进一步介绍该窗口系统的应用接口。     

Stabilization of inter-area and/or oscillatory modes in large-scale power system by voltage impedance power system (VIPS) apparatus based on decentralized control scheme

New technologies such as power electronics have made it possible to change continuously the impedance of a power system not only to control power flow but also to enhance stability. A power system incorporating a variable impedance apparatus such as a variable series capacitor (VSrC) and high-speed phase shifter (HSPS) is called VIPS (Variable Impedance Power System) by the authors. This paper proposes a novel control method of VIPS apparatus such as VSrC and HSPS installed at an interconnecting point for stabilizing inter-area unstable and/or oscillatory modes. The proposed design method of the control system is a kind of hierarchical decentralized control method of a large-scale power system based on a Lyapunov function. Under the proposed control scheme, each subsystem can be stabilized independently by local controllers such as AVR, speed governor and PSS, and then the whole interconnected system can be stabilized by VIPS apparatus taking into account interactions between subsystems. The effectiveness and robustness of the VIPS apparatus control are shown by numerical examples with model systems including a large-scale power system.     

反应堆材料热物性数据库管理系统

衡量一个数据库的质量，不以要看其所包含的数据还应考虑数据库管理系统的使用功能。为了更有效地实施ＩＡＥＡ的ＣＲＰ（ＣｏｏｒｄｉｎａｔｅｄＲｅｓｅａｒｃｈＰｒｏｇｒａｍｍｅ）中有关建立反应堆材料热物性数据库的计划，并考虑到能使所收集的数据方便地为用户服务和进行广泛的国际交流，为此设计并编制了该数据库的软件管理系统ＴＰＳＹＳ。这个系统可在ＩＢＭ－ＰＣ（３８６，４８６）等兼容机上运行，采用人机对话、菜单提示、全屏幕操作。其主要功能有：数据库维护、数据检索、与大型计算程序ＭＡＴ－ＰＲＯ接口和与国际上现有的数据库ＴＨＥＲＳＹＳＴ接口。     

Measurements ofPVTx properties of refrigerant mixture HFC-32+HFC-125 in the gaseous phase

The experimental 156PVTx properties of an important binary refrigerant mixture, HFC-32 (difluoromethane)+HFC-125 (pentafluorethane), have been measured for three compositions, i.e., 50, 60, and 80 wt% HFC-32, by a constant-mass-method coupled with expansion procedure in an extensive range of temperaturesT from 320 to 440 K, of pressuresP from 1.8 to 5.3 M Pa, and of densities p from 50 to 124 kg · m^–3. The experimental uncertainties of the present measurements are estimated to be within ±7 mK in temperature, ±2 kPa in pressure, ±0.2% in density and ±0.02 wt% of HFC-32. The sample purities are 99.998 wt% for HFC-32 and 99.99 wt% for HFC-125. Seventy-eight second and third virial coeflicients for temperatures from 320 to 440 K have been determined by the present measurements.Paper presented at the Twelfth Symposium on Thermophysical Properties, June 19–24, 1994, Boulder, Colorado, U.S.A.     

Synthesis and characterization of poly(ethylene aspartate)-metal complexes

Poly(ethylene aspartate) [PEA] was synthesized by the melt condensation of D,L-aspartic acid and ethylene glycol. PEA containing pendent amino and carbonyl groups in its repeating chain was used as the polymeric ligand for complexation with transition metal ions, viz. Co(II), Ni(II), Cu(II), Mn(II), Zn(II), Cd(II), Ca(II), Mg(II), Pb(II) and Hg(II). Complexation was found to be most effective in DMSO. The resulting polyester-metal complexes were solid coloured materials which have been characterized by IR spectroscopy, elemental analysis and magnetic susceptibility measurements. The thermal stability of the polyester-metal complexes was investigated by thermogravimetric analysis (TGA). On the basis of the physico-chemical studies, an oxygen and nitrogen coordinated structure for the polyester-metal complexes is proposed.