In flight MTF monitoring and compensation for CCD camera on CBERS-02

All image systems cause a blurring of the scene radiance field during image acquisi- tion. Accurate characterization of this blurring is referred to as the modulation transfer function (MTF)[1]. The MTF is a fundamental imaging system design specification and system quality metric often used in remote sensing. It results from the cumulative effects of the instrumental optics (diffraction, aberrations, focusing error), integration on a pho- tosensitive surface, charge diffusion along the arra…     

论当前家庭装修的几个误区

分析了当前家装存在的破坏结构，一味追求奢华，施工质量差等种种误区，提出了搞好家庭装修的关键环节，对促进家装行业健康发展有积极的意义。     

Simulating Experiment for Temperature Field of Frozen Subgrade Using Regulation Tubes

The main factors that influence the temperature field of frozen subgrade were analyzed.The experimental equipment for simulating frozen subgrade was built up,and the declining regulating tubes were placed at the foot of the embankment. By means of this equipment two simulating experiments of controlling temperature filed of frozen subgrade were carried out in the laboratory. One method is to collect natural cold energy, and the other one is to collect natural cold energy ccompanied by artificial refrigeration simultaneously. The result indicates that the latter is an effective method for maintaining the stability of the frozen subgrade.     

新型银铁电触头材料试验研究

对采用粉末冶金与化学热处理相结合的方法研制的电触头材料进行了理化性能、显微组织和抗氧化性能试验，探讨其机理及对性能的影响因素。试验表明：所研制的触头的理化性能基本达到了国标规定的相近触头的指标，其显微组织和抗氧比性能则优于国标规定。Ａ＿（ｃ４）加速模拟电寿命试验的结果证实该种触头材料应用前景良好。     

核测井仪器中的磁屏蔽研究

核测井仪器受套管剩磁的影响比较严重，常常用在探测器的周围缠绕多层坡莫合金带的方法进行磁屏蔽，由于缠绕的坡莫合金圆筒不能闭合，加上缠绕过程中坡莫合金带的形变造成材料本身磁导率的下降，传统的磁屏蔽方法的效果不好。本文介绍一种简单易行、磁屏蔽效果较好的方法，实验的结果说明用电工纯铁做探测器的外壳可以达到令人满意的效果。     

激光加热在Al2O3/Ti系梯度功能材料制备过程中的作用及机理

梯度功能材料是一种界面连续化的新型复合材料,本文研究了激光加热在合成Al2O3/Ti系梯度功能材料过程中的作用和机理,同时用激光大光斑加热方法制备出直径11mm厚度3mm完整的FGM试样并加以分析,以及首次采用在试样中埋设微细热电偶成功地测出了激光加热造成的温度梯度分布。     

聚合物复合材料填充剂的改性

在前人研究的基础之上，归纳总结了聚合物复合材料填充剂的种类，综述了对其进行表面改性的目的、条件、方法、工艺以及对改性结果的表征等。文章还分析了影响填充聚合物复合材料性能的因素，指出了今后发展的方向。     

Prediction of High-Temperature Long-Term Strength for Damaged Structures

A method is proposed for analytical estimation of the high-temperature long-term strength of structures with material discontinuities, which are stress raisers. We consider the processes involving the formation of diffusion pores. Diffusion processes in metals are strongly enhanced with increasing temperature and stresses.     

绿色包装材料——生物降解塑料

对绿色包装材料-生物降解塑料的降解机理、特点，国内外研究现状和进展及存在的问题和发展前景进行了介绍。     

漏斗贮料压力计算公式

本文从平衡条件和常系数假定出发，建立贮料压力微分方程，导出了正倒锥漏斗、倒锥漏斗贮料压力计算公式。文中说明，圆柱仓筒贮料压力微分方程为上述方程的特殊情形。本文成果可供筒仓工程设计使用，还可供确定斗口给料机贮料荷载参考。