雷电信息分析显示终端在电力系统的应用

雷电信息分析显示终端（LIADS）是雷电定位系统的三个组成部分之一。根据雷电信息分析显示终端的特点，探讨了雷电定位分析显示终端在电力系统中的应用，提出了在电力系统中一些新的应用范围。这对充分发挥雷电信息分析显示终端的作用，提高电力系统的安全，经济，可靠运行水平，具有重要意义。     

Research on Dynamics Design for Active Sludge System

In order to describe the relationship between dynamic process and sludge-removing load in active sludge system, a new method for designing the volume of aeration tanks was put forward based on the Michaelis and Menten cquation. the influence of sludge returning was considered in the design. The result shows that the parameter of sludge reflux ratio plays a very important role in tbe design of active sludge systan. In some given conditions, there exists an optimum reflux ratio which can make the volume of aeration tank be the minimum.     

用小直径空心纤维薄膜分流过滤葡萄酒

介绍了当今世界上葡萄酒生产过程中，对过滤工序的要求。采用小直径空心纤维薄膜的分流过滤法具有很多优点，在德国占据了很大的市场份额，将在欧洲市场上快速发展起来，具有光明的前景。     

消除京广微波干线乌山站互调干扰的方案研究与实施

分析了互调干扰的危害，讨论了乌山微波站十余年互调干扰的生成原理和抗御过程。经验是成功的，共同行们参考。     

Factors influencing the Development and Adoption of Knowledge Based Decision Support Systems for Small,Owner-Operated Rural Business

This paper provides an analysis of existing literature and practical problems associated with the adoption of a developed knowledge-based decision support system (KBDSS) within small rural businesses. The rural small businesses selected for this study were individual farms within the Australian dairy industry and the developed KBDSS was called DairyPro. The object was to determine the factors that could help with future KBDSS development and improve adoption rates. These factors were tested against DairyPro to determine their effectiveness. This analysis indicates that system developers need to have a good working knowledge of the target industry and to understand the types of decisions that are made by managers in order to develop systems that will be used. A review of the literature also suggests that adoption rates can be influenced by cultural, political, educational and age factors as well as individual characteristics of information technology itself. Small business managers needed more ownership in the process of KBDSS development. The author suggests that the factors affecting KBDSS adoption by dairy farmers can be equally applicable to other small, owner-operated rural businesses. This approach advocates the use of domain experts to provide estimates of expected production levels rather than that of the traditional approach of using the results from mathematical or simulation models to make these estimates.     

二维信号Wigner分布的数值计算

Wigner分布函数作为一个同时表达空间 频率变量的函数 ,在光学领域中有着广泛的应用。提出了二维信号Wigner分布函数的数值计算方法 ,并模拟了一些二维实信号 (圆孔 ,圆环和方孔 )的Wigner分布函数     

Hot compaction of polyoxymethylene. II. Structural characterization

The structural characterization of sintered polyoxymethylene was carried out to determine the mechanism of sintering. Thermal behavior and small‐angle X‐ray scattering (SAXS) of sintered samples reveal that an improvement in either crystal size or perfection, or both, takes place during the sintering process, in comparison with compression‐molding from the melt. The loss modulus data also give evidence of crystal reorganization during sintering that improves the continuity of the crystalline phase and enhances its mechanical contribution. These findings eliminate the occurrence of major melting during sintering. However, the high mobility of the chains in the crystalline phase in the temperature range of the melting onset suggests that short range rearrangements of the chains in the crystalline lamellae are likely to occur during the time of the process. The proposed mechanism of sintering is that of crystallographic welding of crystals from neighboring particles, as a result of the combined effect of plastic flow and temperature during the hot compaction operation. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2007     

Identification in the rat neurotensin receptor of amino-acid residues critical for the binding of neurotensin

In order to identify charged amino-acid residues of the cloned rat brain neurotensin (NT) receptor (NTR) that are critical for NT binding, we performed site-directed mutagenesis on the cDNA encoding this protein, followed by transient expression into mammalian COS-7 cells and in Xenopus laevis oocytes. Point substitutions of charged residues in the N-terminal part and in the 2nd and 3rd extracellular loop of the receptor either did not affect (125)I-Tyr3-NT binding or resulted in a decrease in binding affinity by a factor of 2-3. Mutations of amino acids Asp113 in the second transmembrane domain (TM) and of Arg149 or Asp150 in TM III yielded receptors that bound NT as efficiently as the native receptor. By contrast, replacement of the Asp139 residue in the 1st extracellular loop, or of Arg143 or Arg327-Arg328 residues at the top of TM III and in TM VI, respectively, completely abolished ligand binding. Confocal and EM immunocytochemical studies of the expression of these affected receptors, tagged with the C-terminal sequence of the vesicular stomatitis virus glycoprotein (VSV-G), indicated that this loss of binding was not due to altered receptor expression or to their improper insertion into the plasma membrane. When these mutated forms of neurotensin receptor were expressed into Xenopus oocytes, Asp139-Gly- and Arg143-Gly-modified receptors remained functional in spite of a lowered response to NT whereas the Arg327-Arg328 mutant form was totally insensitive to NT at concentrations up to 10 microM. In the case of the Arg327-Arg328 mutation, the observed insensibility to NT could be the result of a drastic conformational alteration of this mutant protein. By contrast, it would appear that Asp139 and Arg143 residues located in the first extracellular loop of the receptor may be directly involved in the interaction of the receptor with neurotensin.