显微镜产品质量光电检测的研究

显微镜产品质量光电检测的实施是光、机、光电、计算机技术的综合运用。本文是笔者多年来研究成果总结，包括了已研制出的ＸＪ－１型生物显微镜多功能光电质检仪及其改进；对显微镜离焦性能检测的探索，共可实现显微镜产品质量七个考核项目的检测与等级分拣。这些成果给显微镜行业提供了先进的检测工具；同时为发展我国显微镜产品检测技术、提高检测水平起积极的促进作用。     

10.1007/s10955-006-9040-z

We derive hydrodynamic equations describing the evolution of a binary fluid segregated into two regions, each rich in one species,which are separated (on the macroscopic scale) by a sharp interface. Our starting point is a Vlasov-Boltzmann (VB) equation describing the evolution of the one particle position and velocity distributions, f_i (x, v, t), i = 1, 2. The solution of the VB equation is developed in a Hilbert expansion appropriate for this system. This yields incompressible Navier-Stokes equations for the velocity field u and a jump boundary condition for the pressure across the interface. The interface, in turn, moves with a velocity given by the normal component of u.     

监测Lévy稳定过程均值变点的平均运行时间估计

平均运行长度(时间)(ARL)是判断一控制图监测变点效果好坏的一个重要工具.本文主要研究Lévy稳定过程的均值变点监测问题.我们给出了三个控制图,即EWMA,GEWMA和GLR的ARL估计,并通过数值模拟比较了4个控制图监测均值变点的效果和差异.     

Infrared detection of a planet next to a bright star

Humans have always dreamt about the possibility of existence of planets in solar systems other than our own. After flying by, dropping probes, and even landing devices on most planets within our own solar system, the search for extra-solar planet is included in every proposal to either build a larger and better earth-, space-, or moon-based telescope, or observatory facility. The preliminary analysis seems to indicate that wavelength band from 25 μm to 30 μm is most promising in solving this problem. A number of IR technological challenges are to be overcome before the actual detection system can even be considered in a detailed design. The significant technical challenges of finding a planet will be described. Then details are given on the feasibility of detecting a planet with an instrument concept designed specifically for this purpose, a space-based, rotating rotationally shearing interferometer.     

Diffusion study of multi-organic layers in OLEDs by ToF-SIMS

A model organic light-emitting diodes (OLEDs) with structure of tris(8-hydroxyquinoline) aluminum (Alq₃)/N,N′-diphenyl-N,N′-bis[1-naphthy-(1,1′-diphenyl)]-4,4′-diamine (NPB)/indium tin oxide (ITO)-coated glass was fabricated for diffusion study by ToF-SIMS. The results demonstrate that ToF-SIMS is capable of delineating the structure of multi-organic layers in OLEDs and providing specific molecular information to aid deciphering the diffusion phenomena. Upon heat treatment, the solidity or hardness of the device was reduced. Complicated chemical reaction might occur at the NPB/ITO interface and results in the formation of a buffer layer, which terminates the upper diffusion of ions from underlying ITO.     

A coincidence transmission electron microscope with digital waveform measuring system for analytical microscopy

We have been developing a new analytical transmission electron microscope (TEM), called a coincidence TEM, which in principle enables elemental mapping images to be observed at a high signal‐to‐noise (S/N) ratio under very low dose radiation conditions. In this paper, we report the development of a coincidence TEM with a digital waveform measuring system for obtaining a coincidence elemental mapping image. In this system, analog signals detected by a Si(Li) detector and a multianode, position‐sensitive photomultiplier (PSPM) are continuously converted into 12‐bit digital waveform data at a rate of 100 MHz, and transferred to a PC. From the transferred digital waveform data, information on X‐ray photon energy, electron incident position, and detection times of both X rays and electrons are calculated by digital waveform measurement, which lead to the observation of a successful coincidence elemental mapping image. Copyright © 2005 John Wiley & Sons, Ltd.     

透射式跑道能见度激光测量仪的研究

介绍了一种利用激光测量跑道水平及斜视能见度的智能化仪器。该仪器主要由光学系统、信号放大与处理系统及显示系统三部分组成。简要介绍了该仪器的基本结构、工作原理和主要技术指标，讨论了其中的技术难点及其相应的解决办法。     

Novel All Digital Scheme for Open Loop Fiber Optic Gyroscopes

ＮｏｖｅｌＡｌＤｉｇｉｔａｌＳｃｈｅｍｅｆｏｒＯｐｅｎＬｏｏｐＦｉｂｅｒＯｐｔｉｃＧｙｒｏｓｃｏｐｅｓＹＡＮＧＹｕａｎｈｏｎｇ（Ｔｈｅ５ｔｈＲｅｓｅａｒｃｈＤｉｖｉｓｉｏｎｏｆＢｅｉｊｉｎｇＵｎｉｖｅｒｓｉｔｙｏｆＡｅｒｏｎａｕｔｓ＆Ａｓｔｒｏｎａｕ...     

毛细管电泳-柱端安培检测法用于抗癌药物2-氨基-6-巯基嘌呤和8-氮杂鸟嘌呤的研究

采用毛细管电泳-安培检测法建立一种简单、快速、有效的同时分析抗癌药物2-氨基-6-巯基嘌呤和8-氮杂鸟嘌呤的新方法.在长50 cm、内径为25μm的未涂层毛细管中,采用20 mmol/L磷酸盐(pH为7.0)缓冲液作为运行液,当分离电压为21 kV时,两组分在12 min内达到基线分离.在上述最佳分离条件下,当电极电位为1.050V、进样时间为10 s时,2-氨基-6-巯基嘌呤和8-氮杂鸟嘌呤的峰电流和浓度之间呈良好的线性关系,其相关系数分别为0.999 20、.999 0,检测限分别为3.0×10-7、2.0×10-7mol/L.7次重复实验2-氨基-6-巯基嘌呤和8-氮杂鸟嘌呤的日间峰电流RSD分别为2.44%3、.46%.利用该法检测了牛血清蛋白中的2-氨基-6-巯基嘌呤和8-氮杂鸟嘌呤,回收率分别为100%-113%,93.0-102%.