茶溶液中饱和吸收产生热致非线性效应的研究

本利用单光束扫描法研究了在４８８ｎｍ波长下，一种花茶酒精溶液因饱和吸收所产生的热致非线性效应，测得其热光系数ｄｎ／ｄＴ为＝１．２×１０＾－５℃，饱和光强为５．４ＫＷ／ｃｍ＾２。     

消除光源波动等因素影响的光纤网络补偿技术

光纤网络补偿方法是提高强度调制光纤传感器精度行之有效的方法之一，它能消除因光源波动、耦合系数的变化、传输特性的变化以及光电器件漂移等因素的影响，文中介绍了常见的几种网络补偿方法的机理，最后介绍了我们近来的工作－数字式全光纤优化网络补偿技术的研究。     

一种新型LED发光矩阵测试系统

由于ＬＥＤ信息显示屏快速发展的需要，一种新颖的ＬＥＤ发光矩阵测试系统已研制成功。它采用微机技术和具有ＣＩＥ标准观察者曲线光谱响应的多通道光电检测系统。能测试各种ＬＥＤ发光矩阵每个发光元的发光强度，正向压降和反向电流。测试数据显示在计算机显示屏和存在计算机内存中。     

分形相位屏的衍射（Ⅰ）：平均衍射强度

本文通过引入带限Ｗｅｉｅｒｓｔｒａｓｓ分形函数描述大气折射率的起伏，研究平面 波在大气分形相位屏衍射的平均衍射强度分布问题。     

Attitude intensity and dissonant cognitions.

Balance and dissonance theory postulate that tension may be reduced by decreasing the importance of dissonant cognitions. 232 students at a southern university and 261 students at a northern university responded to 3 forms of an attitude scale toward integration. Attitude intensity was used as a measure of importance and was correlated with dissonance as measured by perceived discrepancy between Ss' attitude and those of their parents and close friends. The results suggest that: (a) individuals may markedly disagree with primary reference groups when these groups are perceived to be against the broader norms of his culture, and (b) dissonance may result in an increase as well as a decrease in attitude intensity. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

￠138超高压釜体螺纹联接处的强度分析

用有限元混合法对φ138超高压釜体的热接触应力进行厂综合分析.所用数学模型把确定接触力的大量迭代计算凝缩到少数螺纹牙齿接触点上执行,避免了原方程的多次形成和求解,大大提高了计算速度,减少了计算量,通过引用伪弹簧解决了总刚度矩阵奇异性问题.两年来多次射孔爆炸试验证明理论分析结果正确,釜体安全可靠.     

Stress intensity factor computation using the method of fundamental solutions

In this paper, we study the application of the method of fundamental solutions to the computation of stress intensity factors in linear elastic fracture mechanics. The displacements are approximated by linear combinations of the fundamental solutions of the Cauchy–Navier equations of elasticity and the leading terms for the displacement near the crack tip. The applicability of two formulations of the method is demonstrated on two mode I crack problems, where it is shown that accurate approximations for the stress intensity factors can be obtained with relatively few degrees of freedom. Parts of this work were undertaken while the first author was a Visiting Professor in the Department of Mathematical and Computer Sciences, Colorado School of Mines, Golden, Colorado 80401, U.S.A.     

提高7#沸腾炉焙烧强度的改造

由于沸腾焙烧炉酸化焙烧强度较低，提出了改造水套、冷却器、连接等部位。改造后工艺指标得到了提高。     

谈我国城市各类建筑物耐震安全性的对策

针对建筑物耐震安全性的问题 ,从地震预报、地震转移、分散、地震工程等方面提出了减轻地震灾害的基本对策 ,并对结构隔震体系、结构消能减震体系、结构主动控制减震体系等作了介绍。     

Polarization artefacts of an FTIR microscope and the consequences for intensity measurements on anisotropic materials

The infrared beam on both the main Nicolet Nexus bench and the attached Spectra‐Tech Continuum microscope has been shown to be partially polarized. The degree of polarization is ≈ 30%. Although the state of polarization of the infrared beam is of no consequence when measuring the spectra of isotropic materials (gases, liquids), there is a potential problem when considering the spectra of anisotropic materials. Single band intensities are particularly prone to error as small changes in sample thickness or orientation directly affect the intensity. Thickness effects can be overcome by measuring intensity ratios. However, because of the partially polarized nature of the infrared beam, even intensity ratios, illustrated here by the ratio amide I/II of collagen fibres, vary with sample orientation. If overlooked, this effect can be problematic when measuring infrared spectra with an FTIR microscope from samples that are anisotropic or contain anisotropic domains, even though they may appear isotropic on a macroscopic scale. Because dichroic ratios remain unaffected, the intensity ratio from two bands with different transition moments may be used to give a strong indication of the orientation of the sample. This work is illustrated by reference to the FTIR spectra of orientated polyethylene, collagen tape and human trabecular bone.