量热器法系统含油量对压缩机冷量测量精度影响的研究

通过理论发析研究,探讨了量热器试验台系统中的制冷制含油量对压缩机测量精度的影响,提出了提高试验台测量精度的措施,所获得的结论可以为修订制冷压缩机测试标准和研制制冷压缩机测试装置提供参考。     

平面图与面的并区域

Sachs,Kozyrev和Grinbery指出平面图具有Hamilton圈的一个必要条件是2,其中φi和φ'i分别为Hamilton圈内、外应为i的面数．本文探讨面的度相等的平面图的面数,面并成顶点在边界上的连通区域与Hamilton圈.     

RLPG高压射流初始段测试及分析

再生式液体发射药火炮（ＲＬＰＧ）中,液体药在喷口处的流动特性影响到液体的雾化和燃烧,是控制ＲＬＰＧ内弹道过程的关键因素之一。该文针对园柱形轴对称射流建立了自由湍流射流模型,得到了射流的流速分布规律,利用该模型分析了射流的初始扩张角和完整射流核长度,并与实验结果进行了比较。     

计算机网络通信工具TalkBench

本文首先介绍了一些已有的通信机制和通信协议,在此基础上论述了一个在软件过程工程环境中计算机网络通信工具ＴａｌｋＢｅｎｃｈ 的系统构成及其特点－     

β-环糊精与苯基甘氨酸超分子化合物的制备与性质研究

本文报道β－环糊精与苯基甘氨酸超分子化合物的合成方法,以及该化合物的ＩＲ和ＵＶ光谱研究结果,并采用相溶解度法测定了其生成常数．     

Mathematical Model for Application of Simulated Tikuanyin Tea Residues on Wool Dyeing Process

The central composition experimental design of multiva-riate Response Surface Method was used to formulate mathematical models aiming to predict (1) the optimum dyeing conditions of simulated waste Tikuanyin tea for wool fabric and (2) the optimum extraction conditions of a natural mordant originated from common waste eggshell. The pre - mordanting eggshell was applied to wool fabric before dyeing with simulated waste Tikuanyin tea under the optimum dyeing conditions. After mordanting the wool fabric with extracted natural eggshell solution, the prominent effect of increment in dye uptake and improvement of the properties of light fastness, washing fastness and rubbing fastness were evaluated.     

Kinanthropometry Study of the Physique of Hong Kong and the Interior of China Correctional Services Recruits

In this paper,the physique of the Hong Kong Correc-tional Services recruits were identified and reported.Kinanthropometry has been applied in the study of Olympic athletes and researchers concluded that specificsports were correlated with a specific type of physique.Athletes involved in the same sports have a similar phys-ique as well as body shape.Gold medal winners could beidentified by their specific type of body shape.And ath-letes in different sport have different and specific bodyshape.Hence,by applying kinanthropometry study,people in different occupations could be identified by their specific body shape and physique.The finalisedbody shape can be used as reference in the vetting stan-dards.The somatotyping and anthropometric input canbe used to improve the uniform sizing system.     

平面图与面的并区域

Ｓａｃｈｓ,Ｋｏｚｙｒｅｖ和Ｇｒｉｎｂｅｒ,指出平面图。有Ｈａｍｌｉｔｏｎ圈的一个必要条件是∑ｓｕｍ　ｆｒｏｍｉ＝３（ｉ－２）φ_ｉ＝∑ｓｕｍｆｒｏｍｉ＝３（ｉ－ ２）φ＇_ｉ＝ｎ－２,其中φ_ｉ和φ＇_ｉ分别为Ｈａｍｉｌｔｏｎ 圈内、外度为ｉ的面数．本文探讨面的度相等的平面图的面数,面并成顶点在边界上的连通区域与 Ｈａｍｉｌｔｏｎ 圈．     

国人Ⅱ型长QT综合征临床特点及KCNH2基因变异

遗传性长QT综合征(LQTS)是一种常染色体遗传性心脏病。特征性表现为心电图上QTc延长,及尖端扭转型室性心动过速(TdP)导致的晕厥和猝死。近年来随着分子遗传学的发展已明确遗传性LQTS是由于编码离子通道的基因或细胞骨架蛋白基因突变造成的,目前已发现1￣8种类型,致病基因分别为KCNQ1、KCNH2、SCN5A、ANK2、KCNE1,KCNE2、KCNJ2和Cav2.1。本研究目的是观察中国遗传性II型LQTS(LQT2)患者的临床特点及KCNH2突变。应用聚合酶链反应和测序分析,对来自中国19个省市自治区的77个遗传性LQTS家系筛查了LQT2致病基因KCNH2,观察临床表现和心电图改变。77例LQTS家系先证者中,心电图表现为LQT2者42例(54.5%),平均年龄(26.7±12.7)岁,QTc(580±70)ms,发病年龄(17.3±11.5)岁。晕厥触发因素包括运动、情绪激动和铃声刺激等。目前已经发现了9个KCNH2突变,其中4个为首先发现;另外还发现5个KCNH2的核苷酸多态性。证明LQT2为中国最常见的LQTS;中国LQT2患者心电图表现与临床特点与欧美LQT2患者有所不同。     

A complex of Shc and Ran-GTPase localises to the cell nucleus

The three isoforms of the adaptor protein Shc play diverse roles in cell signalling. For example, the observation of p46 Shc in the nuclei of hepatocellular carcinoma cells suggests a function quite distinct from the better characterised cytoplasmic role. Ligands responsible for the transport of various Shc isoforms into organelles such as the nucleus have yet to be reported. To identify such ligands a far western approach was used to determine the p52 Shc interactome. The Ran-GTPase nuclear transport protein was identified and found to bind to p52 Shc in vitro with low micromolar affinity. Co-immunoprecipitation, pull down and fluorescence lifetime imaging microscopy experiments in stable cells confirmed cellular interaction and nuclear localisation. The nuclear transport factor protein NTF2, which functions in cohort with Ran, was shown to form a complex with both RAN and Shc, suggesting a mechanism for Shc entry into the nucleus as part of a tertiary complex. Electronic supplementary material  The online version of this article (doi:) contains supplementary material, which is available to authorized users. Received 20 October 2008; received after revision 04 December 2008; accepted 15 December 2008