煤质检验过程中对热电偶冷端温度的补偿

简要介绍了热电偶的工作原理及其补偿导线的选用,论述了在煤质检验过程中时热电偶的冷端温度进行补偿的必要性和补偿方法.     

四次幂交换作用的稀疏伊辛铁磁系统

本文应用新近发展的有效场重整化群方法,研究了四次幂交换作用和自旋浓度对于稀疏伊辛(Ising)铁磁系统的居里温度的影响.     

电磁铸轧铸嘴支撑面板热应力分析和结构改进

利用ANSYS有限元分析软件建立了铸嘴支撑面板温度-应力耦合分析的三维有限元计算模型．为了优化面板内的应力分布。减小热位移，特别是与铸嘴平面稳定性直接相关联的竖直方向热位移，对面板进行了结构改进，并对实际工况下面板的热应力分布进行了计算研究．研究结果表明：面板内存在显著的热应力，应力集中现象明显；面板总体上出现了较大的热位移，特别是在竖直方向，热位移量为最大，导致面板因变形过大失效．改进后面板的热应力在总体数值上有所升高，但应力集中现象有所改善，在竖直方向的热位移量已显著减小，能很好地满足电磁铸轧的工艺要求．     

集成电路温度传感器的原理和制造工艺

本文提出了集成电路温度传感器的版图设计原则.实验证明效果良好.     

逆温下发菜脯氨酸含量及质膜透性的变化与含水量的关系

研究了发菜（Ｎｏｓｔｏｃ ｆｌａｇｅｌｌｉｆｏｒｍｅ Ｂｏｒｎ ｅｔ Ｆｌａｈ）在风干状态（含水量１０％－１４％）和湿润状态（含水量８０９％）高温和低温处理后脯氨酸和细胞质量透性的变化。结果是－１５－１００℃处理２４ｈ对风干发菜质膜透性无显著影响，但湿润发菜在处理温度升至３５℃时其电解质渗率已达９％．－５℃的低温对风干和湿润发菜的脯氨酸含量无显著影响；在５５℃的高温处理后，风干和湿润状态的发菜脯氨     

Serotonin levels in fish brain: Effects of hydrostatic pressure and water temperature

Summary The contents of serotonin (5 HT) and its metabolite 5 hydroxy indoleacetic acid (5 HIAA) have been measured (HPLC technique) in the brains of eels exposed to different conditions of hydrostatic pressure and temperature (HP=1 or 101 ATA in winter, Tw=14°C, and in summer, Tw=19°C). It appears that an increase of Tw induces a significant increase of the 5 HT/5 HIAA ratio. In contrast, eels exposed at 101 ATA of HP for 1 h do not exhibit any modification in the 5 HT/5 HIAA brain ratio at a given temperature. The involvement of 5 HT under the conditions studied is discussed.     

四种负载型Pt／Al2O3重整催化剂性能和表征的研究

以四种不同来源的Ａｌ２Ｏ３为载体，采用相同浓度的Ｈ２ＰｔＣｌ６·６Ｈ２Ｏ水溶液浸渍方法制取了四种Ｐｔ／Ａｌ２Ｏ３催化剂。同时使用程序升温还原技术，程序升温脱附技术以及微型脉冲催化色谱技术对其催化剂性能进行表征。实验结果表明，四种催化剂的ＴＰＲ谱，Ｈ２－ＴＰＤ谱以及正己烷脱氢环化活性和选择性是有差别的。     

塑性变形对间隙原子碳、氮、硼扩散速度的影响

本文综合论述了在化学热处理过程中室温形变对间隙原子(C、N、B)扩散速度的影响.认为位错对扩散即有促进作用也有阻碍作用,其主要原因是温度的影响,     

In Situ Measurement of the Undisturbed Ground Temperature for Ground Source Heat Pump System

The undisturbed ground temperatures are important for design of the ground heat exchangers in ground source heat pump （GSHP） systems. In this paper, the undisturbed ground temperatures measured in two different methods are presented. The investigation was carried out in two cases. The temperature measured with the direct method is assumed to give the correct undisturbed ground temperature profile. The temperature measured with indirect method overestimates the undisturbed ground temperature by 2.1℃ and 1.7~C. This difference is mainly caused by the circulation pump and ambient air to the fluid. Therefore, the results that are decreased about 2℃ as compared with the indirect measured are recommended to estimate the undisturbed ground temperature in situ measuring. A smaller pump or deeper borehole or mild weather would result in a more correct temperature. Because the undisturbed ground temperature is affected by many factors. Whether or not these conclusions are correct to other areas, this would need further investigation.