An investigation of the relation between the temperature dependences of the initial unbalance and the output signal of resistance strain sensor bridge circuits

The relation between the initial unbalance and the output signal of bridge circuits when acted upon simultaneously by the physical factor being measured and the temperature of the surroundings when the bridge is supplied from a voltage or current source is investigated. Analytic relations are obtained which explain the temperature dependence of the useful output voltage under external physical action. __________ Translated from Izmeritel’naya Tekhnika, No. 1, pp. 48–49, 2007.     

斜拉桥动力特性的参数分析

建立了斜拉桥动力分析的三维有限单元模型 ,研究了单元类型和参数变化对斜拉桥动力特性的影响。详细地讨论了斜拉桥非线性来源 ,并运用 6节点薄壁单元和 4节点索单元分别考虑了斜拉桥弯曲构件和索的非线性特性。通过对一斜拉桥的数值分析 ,得到了关于斜拉桥动力参数敏感性的一般结论。     

试谈高炉冷却壁的检漏及维护

高炉冷却壁的检漏及维护，是炼铁工作者十分关心的问题，本文针对邯钢高炉具体情况，探讨了高炉冷却壁漏水的原因，检漏方法，漏水冷却壁的维护及预防措施。     

Cryogenic temperature measurement for large applications

We have developed a resistance thermometry system for the acquisition, control and monitoring of temperature in large-scale cryogenic applications. The resistance of the sensor is converted to a voltage using a self-balancing AC bridge circuit featuring square-wave excitation currents down to 1 nA. The system is easily scalable and includes intelligent features to treat special situations such as magnet quenches different from normal operation.     

浅析体系转换法和粘贴碳纤维加固法在桥梁加固中的应用

通过对桥梁加固技术的研究，讨论了体系转换法和粘贴碳纤维布加固法的具体应用。     

门式脚手架在已建高层建筑外装修中的应用

介绍门式脚手架在已建高层建筑外排栅中的整体搭设和应用实例。     

Experience with Applying Formal Methods to Protocol Specification and System Architecture

In the last three years or so we at Enterprise Platforms Group at Intel Corporation have been applying formal methods to various problems that arose during the process of defining platform architectures for Intel's processor families. In this paper we give an overview of some of the problems we have worked on, the results we have obtained, and the lessons we have learned. The last topic is addressed mainly from the perspective of platform architects.     

电子辐照加速器大功率工频高压电源

文章介绍目前两种用于烟气脱硫加速器的不同形式直流高压电源，分析了它们各自的特点。针对它们存在的不足之处，提出了一种全新的倍压型桥式整流线路，并对此线路进行了理论推导和计算机模拟仿真。     

提速列车作用下上承式钢板梁受迫振动实验研究

本文通过对京哈线下行大清河桥第9孔33.6m上承式钢板梁桥的现场实验结果的分析，以测试孔跨中实测横、竖向振幅为依据，较为详尽地研究了在提速列车作用下桥梁的自身的动力特性及其在提速列车作用下的动力响应，给出了在不同列车运行速度、不同列车编组情况下桥梁横、竖向振幅以及一阶受迫振动频率的变化关系，并对桥梁在列车通过时的桥梁的振动形态、结构的薄弱点及其加固方向进行了初步的探讨。