片状陶瓷材料高低温电性能参数的自动检测

由进口电性能仪配上自制的高温系统，计算机自动采集数据，配置成一套高低温电性参数测定装置，该装置的特点是，升温快，炉体小巧，炉芯可更换盛液氮装置，屏蔽良好，等温区长，温工及参数测量精确可靠。     

PPS：基于PROSITE数据库检索蛋白质功能位点的计算机程序

用标准Ｃ语言在ＩＢＭ－ＰＣ兼容微机上开发了基于ＰＲＯＳＩＴＥ数据库检索蛋白质序列功能位点的ＰＰＳ程序，ＰＲＯＳＩＴＥ是Ｂａｉｒｏｃｈ建立的蛋白质功能位点或结构模式的资料库，为蛋白质序列分析和结构功能研究提供了新工具。     

钢管内径光电检测装置

介绍了一种检测细长钢管内径的光电检测装置。该装置利用线阵ＣＣＤ作传感器，采用８０３１单片机作为主控制。     

浅谈降低电解槽氟化铝单耗的方法

氟化铝是电解生产中十分重要的原料，它对控制电解槽电解质温度，保持电解槽技术条件发挥着重要的作用。但随着电解生产成本的逐渐降低，氟化铝的消耗成为电解生产成本中的一项重要内容。本文就某分厂电解槽氟化铝添加的生产工艺、设备、控制以及管理等方面，提出降低氟化铝单耗的简要方法。     

Impact of temperature cycle profile on fatigue life of solder joints

In this paper the influence of the temperature cycle time history profile on the fatigue life of ball grid array (BGA) solder joints is studied. Temperature time history in a Pentium processor laptop computer was measured for a three-month period by means of thermocouples placed inside the computer. In addition, Pentium BGA packages were subjected to industry standard temperature cycles and also to in-situ measured temperature cycle profiles. Inelastic strain accumulation in each solder joint during thermal cycling was measured by high sensitivity Moire interferometry technique. Results indicate that fatigue life of the solder joint is not independent of the temperature cycle profile used. Industry standard temperature cycle profile leads to conservative fatigue life observations by underestimating the actual number of cycles to failure.     

液态混合有机标准物质研究

本研究采用重量法配制有机液态混合标样 ,并对配制方法、混合标样的均匀性、稳定性及影响不确定度的因素进行了研究 ,并用气相色谱法进行了比对分析。经稳定性监测 ,稳定度大于等于一年 ,不确定度小于± 2 %。     

聚苯乙烯溴代并接技聚二甲基硅氧烷

聚苯乙烯（PS）在苯溶液中与溴代丁二酰亚胺（NBS）反应，经分离提纯得到了固体溴代聚苯乙烯（PSB）。将所得PSB溶于苯并与低分子量的聚二甲基硅氧烷硅醇锂（PDMSOLi）反应，经分离提纯得到固体的溴代聚苯乙烯接枝聚二甲基硅氧烷（PSB－g-PDMSO),所得PSB-g-PDMSO的结构经^1H-NMR、IR及TEM表征。     

Data mining of resilience indicators

In recent years, the Asia-Pacific region has experienced several financial setbacks, including speculative attacks in 1998 and the SARS outbreak in 2003. Financial stresses of this nature are unanticipated, and not all of the dangers can be predicted by the examination of market information and macroeconomic indicators. The Early Warning System (EWS) that has been adopted by the International Monetary Fund may not be able to predict future financial crises for all possible scenarios, because shocks come in many different forms. To supplement the EWS, this paper proposes a data mining framework to measure the resilience of an economy. The resilience framework does not predict a crisis, but rather assesses the current state of health of an economy and its ability to withstand a financial shock should one occur. The framework is based on a feedback system consisting of two stages. The first stage assigns a resilience score to each economy based on a fuzzy logic scoring scheme that is built on the ambiguous reasoning of experts. The second stage uses the classification tree approach to estimate thresholds for each economic indicator, and examines the quality of the fuzzy score. The result from the second stage is then passed back to the first stage as feedback. The final result is obtained when the feedback system reaches its equilibrium state. The proposed resilience framework is applied to the external-sector and the public-sector economies of several countries to illustrate its applicability.     

屏蔽电泵运行中存在问题的分析与改进

对屏蔽电泵在非设计流量下工作存在较大的轴向力不平衡，造成前端轴承磨损严重进行了分析。在不降低效率的情况下，在屏蔽电泵的泵头加入平衡盘使轴向力得到平衡，并取得了满意的效果。