聚二甲基亚硅烷链均方回转半径及温度系数

利用在旋转异构态模型基础上的构象统计方法,研究侧基高分子聚二甲基亚硅烷的无扰尺寸.得到其长链分子的均方回转半径的特征比和温度系数分别趋向于稳定值2.04和-1.66×10-3deg-1.     

新假相当位温对大气不稳定度的影响

本文利用华南实际探空资料计算了新假相当位温的时空分布,结果表明,水滴冻结潜热项在大气中存在零贡献高度,它对θ_se的净贡献,平均达3.2K,最大达3.9K,加上水质物比热的贡献,两项台计通常可达5.2K,最大达6.7K,两项热量都可增加大气中的不稳定性,增加大气的潜在对流深度,增加对流系统的净浮力,使穿透对流能够到达视高度,这种温度可用于对流和积云发展的业务应用和理论研究。     

Application of Thermal Science to Tongue Inspection in Traditional Chinese Medicine

The study on Traditional Chinese Medicine (TCM)by the technology and method of thermal science is a new cut-in point in interdisciplinary science, and its purpose is to study the tongue inspection in TCM from the view of the bio-heat transfer theory. In this paper human tongues were studied with the infrared thermal imaging technology. And the characteristic relationship between temperature distribution and age, tongue color as well as infrared thermal tongue image concerning the characteristic of viscera was analyzed by the experimental data, which confirms that the change in temperature distribution in different positions of the tongue is related to the diseases of different internal organs of the body. From a series of invasive experiments in animals, the blood perfusion rate was measured with the equipment of CBI-8000 Doppler Blood Flow Meter and MP-100 Physiologic Research System for the first time and the characteristic relationship curve between the temperature on the surface of the tongue and the blood perfusion rate was obtained. From the experiments the temperature on the surface of the tongue reflects objectively the tongue color which is influenced by the blood perfusion rate. This will help to develop some new cognition in the theory of TCM.     

温度对大鳞副泥鳅胚胎发育的影响

通过不同温度水平下大鳞副泥鳅受精率,胚胎发育历时及孵化率、死亡率、畸形率的统计与分析,得出大鳞副泥鳅胚胎发育可耐受水温为16~30℃。最适水温为26℃。温度与胚胎孵化时间呈幂函数关系,H=166889T-2.6074(R2=0.9907)。该实验有利于培养学生对生物学实验的兴趣,加深对动物胚胎发育过程的了解。     

数量增长还是科学发展——毕节试验区经济与人口协调发展应切实关注的核心问题

毕节试验区成立近20年来的实践表明,经济的快速增长与人口总量的扩张在保持着同一的趋势。但我们应从哲学理性的层面,借助数量与质量的内在联系,正确处理经济和社会发展中"快"与"好"的关系,切实破解试验区发展问题中的种种难题,抓住协调发展中的核心问题,不断推进毕节试验区经济与人口的协调发展。     

隧道围岩温度场变化规律理论分析

通过对隧道内二次衬砌表面温度及二次衬砌背后一定深度的围岩体温度场的理论分析，得出隧道内不同部位的温度变化规律，为寒区隧道采用抗防冻措施提供理论依据．     

基于μ＇nSP处理器的太阳能热水器智能控制系统

对太阳能热水器的控制制系统进行了全新的智能设计，可以实现：水箱中水位、水温的智能控制与显示；自动排空水箱至淋浴间管道（也是上水管道）中的存水；智能处理再利用管道排空的水；语音控制浴室的辅助设备（浴霸、换气扇、除湿机等）等．使太阳能热水器操作性能、利用功能、扩展范围、产品档次等诸多方面得到质的飞跃．解决了普通太阳能热水器上水时水满益出；冬天太阳能水温偏低；上（下）水管道需要保温；使用前需要放出水管中大量冷水等问题．     

DCS系统在冶金加热炉中的应用

DCS(Distributed Control System)系统是一种在功能上分散,管理上集中的新型控制系统,与常规仪表相比具有可靠性高,控制功能丰富,自动化整体性能好等优点.随着微电子技术的发展,DCS系统的控制功能更加完善.DCS双交叉温度控制系统用于冶金加热炉燃烧控制,较好地解决了传统温度控制燃料热损失大、热效率低、环境污染严重的缺点,提高了劳动生产率、降低了能源消耗,极大地提高了生产的自动化水平和管理水平.     

Winkler地基梁在温度场中受简谐激励的主参数共振分析

应用弹性理论和Galerkin方法建立Winkler地基梁在温度场中受简谐激励作用的非线性动力方程,应用非线性振动的多尺度法,求得系统主参数共振的近似解。分析不同参数对主参数共振响应曲线的影响。     

Effects of Temperature and Strain Rate on Dynamic Properties of Concrete

To study the dynamic properties of the concrete subjected to impulsive loading, stress-time curves of concrete in different velocities were measured using split Hopkinson pressure bar (SHPB).Effects of temperature and strain rate on the dynamic yield strength and constitutive relation of the con-crete were analyzed. The dynamic mechanical properties of the reinforced concrete are subjected to high strain rates when it is at a relatively low temperature. But with temperature increasing, the temperature softening effect makes the strength of the concrete weaken and the impact toughness of the concrete is saliently relative to strain rate effect. So, strain rate effect, strain hardening and temperature softening work together on the dynamic mechanical capability of concrete and the relation between them is relatively complex.