Nanometer edge and surface imaging using optical scatter

Imaging of edges to nanometer resolution using a novel non-contact technique is presented. This technique relies on positioning an optical beam to the edge, and simultaneously scanning, and measuring differential changes in off-specular scatter. Data may be used to calculate the radius at the edge to high accuracy. The experimental apparatus is capable of producing diffraction images of features on surfaces arising from processes used in sample preparation. Images of the cleaved edge of an optical fiber, an Au pad on Si, and cleaved quartz measured on this apparatus are presented. This technique could also be utilized to analyze cleaved laser diodes, micro-optics, MEMS devices, and diamond cutting tools.     

计算机控制与检测气动换向阀试验台

介绍一种采用计算机控制与检测气动换向阀试验台的特点和测试系统设计。     

振动监测在强夯试验中的应用

以工程实例为基础,较深入地探讨了强夯试验中振动监测在确定最大夯击数、划分强夯振动影响范围以及计算地基能量吸收系数等方面的应用。     

实施在线监控,科学构建环境监管平台

本文以空气质量检测系统（简称AQMS）为例,探讨了通过建设在线自动监控系统来构建科学的环境监管平台,以提高厂区环境监管水平,推进企业环境管理自动化、信息化、科学化建设。     

A ctivation measurement of neutron distribution in intermediate energy heavy ion target area

The distribution of neutrons produced by the reaction of 50MeV/u ^12C-ion on a thick Cu target are studied.The neutrons are measured with threshold activation detectors.Al.F,C,Al and In activation samples were used to measure neutrons with energy greater than 7,11,20,50MeV and thermal neutrons,respectively,The fluence rate,energy and angular distributions of neutrons,total neutron yield of 12C-ion and the emission rate in the forward direction of neutrons over 11 and 20MeV were obtained.     

An improved outer pipe method for expansive pressure measurement of static cracking agentsOA

Static cracking agent(SCA) is actively investigated as an alternative to explosive blasting for rock breakage due to its immense expansion property. SCA can eliminate the negative effects of shock, noise and harmful gases encountered in explosive blasting processes. Accurate measurement and deep understanding of the expansive properties of SCAs are important in their industrial application. An improved outer pipe method(OPM), termed the upper end surface method(UESM), is proposed in this paper t...     

基于多幅图像的有效点扩散函数的高精度测量

将图像融合以及高精度测量方法应用于天文图像处理,对图片进行处理得到有效点扩散函数,并将有效点扩散函数拟合星像,得到星体的位置与光度信息．结果表明, 方向平均定位精度为0．036 pixel,Y方向平均定位精度为0．O44 pixel,平均测光精度达到0．032 magnitude,测量结果验证了该算法的有效性．     

输气管道音波泄漏检测技术的研究

输气管道泄漏的检测与定位，是管道维护及管道安全运行的重要研究课题.将音波检测方法应用于输气管道的泄漏检测，介绍了音波泄漏检测与定位的基本原理.阐述了采用相关分析法进行泄漏定位的数据处理方法.设计完成了传感器信号提取、模拟信号滤波和A/D数据转换等硬件电路.在单片机上移植Small Rtos51嵌入式实时操作系统，有效管理检测任务，实现信号采集、数据传输和异常情况处理，从而提高了系统的实时性和可靠性.通过搭建输气管道试验平台，对试验数据采集、处理及仿真，论证了音波检测方法应用于输气管道泄漏检测的可行性.     

超高压汞灯配光曲线的自动测量

为了准确获得超高压汞灯配光曲线数据，通过分析光源尺寸以及光源与探测器距离对测量结
果的影响，利用计算机接口技术和光电转换技术构建一套自动测量装置对超高压汞灯的配光曲线进行自动
测量。利用程序延时以及软件滤波消除超高压汞灯驱动电流、电压、测量装置机械振动对测量结果的影响
，从而提高了测量数据的准确性和稳定性。装置测量所得数据不仅可以满足投影系统仿真对配光曲线精度
的要求，而且可以为超高压汞灯的泡壁和电极设计提供参考。     

端面热电阻在高炉炉皮测温上的应用

炼铁高炉到炉役后期,炉缸已腐蚀严重,原炉体测温用热电耦大部分已损坏并无法修复,采用端面热电阻组成的测温系统,准确快速地检测炉皮的温度,能间接反映内部陶瓷杯的腐蚀情况,在实际应用中取得了很好的效果。