水质硬度传感器性能研究

水质硬度传感器是以P.V.C为载体，磷酸酯类的钙盐为电活性物质研制而成，对传感器性能进行测试，其响应时间≤5 s，检测范围广，实验证明它是一种较为方便的水质硬度快速检测仪器设备。     

Power Builder编程技巧

本文简单地介绍了数据库应用软件开发语言Ｐｏｗｅｒ Ｂｕｉｌｄｅｒ，提出了几种新的编程技巧，着重讨论了如何在Ｐｏｗｅｒ Ｂｕｉｌｄｅｒ编程中缩短响应时间，如何合理分配网络服务器／客户的负载等问题，并对其实施方法作了具体说明。此外，还对不同方法的响应时间作了比较，说明了这些方法是行之有效的。     

On-line monitoring applications in nuclear power plants

The nuclear power industry is working to reduce generation costs by adopting condition-based maintenance strategies and automating testing activities. These developments have stimulated great interest in on-line monitoring (OLM) technologies and new diagnostic and prognostic methods to anticipate, identify, and resolve equipment and process problems and ensure plant safety, efficiency, and immunity to accidents. This paper provides examples of these technologies with particular emphasis on eight key OLM applications: detecting sensing-line blockages, testing the response time of pressure transmitters, monitoring the calibration of pressure transmitters on-line, cross-calibrating temperature sensors in situ, assessing equipment condition, performing predictive maintenance of reactor internals, monitoring fluid flow, and extending the life of neutron detectors. These applications are discussed in the following sections. Emphasis is placed on the principles of a core OLM method - noise analysis - and the technical requirements for an integrated OLM system are summarized.     

网络数据库响应时间的多维分析

对网络数据库的响应时间分别从物理网络响应时间、数据库系统级响应时间和SQL语句级响应时间3个方面进行了剖析，并给出了大量的实例，从而使网络数据库的性能得以优化，缩短了网络数据库的响应时间。