毛细管气相色谱法测定中药中有机氯农药残留量

建立了江西省两种中药中有机氯农药残留量的气相色谱分析方法。样品以丙酮提取,在NaCl存在下,以正已烷进行液—液分配,提取液用H2SO4净化,采用DB—1701毛细管柱,GC—ECD检测有机氯农药残留量。最低检测限为1.0×10-3-5.0×10-3mg/kg,添加回收率为85.7%-115.2%,应用于实际样品中有机氯农药残留量的检测,获得了较为满意结果。     

医学文稿实用性的审读

从编辑的角度对医学文稿实用性的审读内容和方法作初步探讨，认为“效、数、简、廉’’是医学文稿(主要是临床类医学文稿)实用性的具体体现，指出编辑不妨从“效、数、简、廉’’入手，对医学文稿的实用性作初步审读．     

一种小波域音频信息隐藏方法

提出了一种基于量化的小波域音频隐藏算法，将保密语音隐藏到载体音频中．为提高隐藏重和保密语音传输的安全性，对保密语音进行了小波域压缩编码和m序列的扩频调制，生成待隐藏的比特序列；通过量化方法，将编码和调制后的保密语音隐藏到载体音频的小波系数中；保密语音的恢复过程不需要使用原始音频、仿真结果表明，隐藏有保密语音的载体音频听觉质量没有明显下降，提取的保密语音感知质量较好；该算法对重量化、加噪、低通滤波等攻击均有良好的鲁棒性．     

A universal method for camera calibration in UITS scenes

A universal approach to camera calibration based on features of some representative lines on traffic ground is presented. It uses only a set of three parallel edges with known intervals and one of their intersected lines with known slope to gain the focal length and orientation parameters of a camera. A set of equations that computes related camera parameters has been derived from geometric properties of the calibration pattern. With accurate analytical implementation, precision of the approach is only decided by accuracy of the calibration target selecting. Final experimental results have showed its validity by a snapshot from real automatic visual traffic surveillance (AVTS) scenes.     

对朝鲜弹道导弹能力的初步分析

根据收集到的公开数据，从弹道导弹的种类和数量，导弹的射程，精度，可靠性，再入体设计能力等方面，对朝鲜的弹道导弹能力进行初步分析，在此基础上计算分析了日本导弹防御系统对朝鲜导弹的防御能力。     

原子物理学的学术战略地位与素质教育中的作用

探讨了原子物理学在现代科学技术中的学术战略地位以及素质教育中的重要作用，指出了在科教兴国、大力发展高科技的今天，原子物理学的教学只能加强、不能削弱。     

光纤任意反射面速度干涉系统的应用

“任意反射面的速度干涉仪”VISAR（Velocity Interferometer System for Any Reflector）技术，已成为诊断冲击作用下样品自由面速度剖面或粒子速度剖面的主要技术。其主要优点在于能够对高速度、高加速度运动事件进行非接触的连续测试。     

A New High Efficiency Multiwave Cerenkov Generator Operating at Low Magnetic Field

With a resonant cavity inserted between the second slow-wave-structure section and the tapered wavegulde, a new structure of the multlwave Cerenkov generator (MWCG) operating at low guiding magnetic field is proposed to produce high efficiency and high power microwave. Some features and potential advantages of the proposed device are analysed. The 2.5-dimensional partlcle-in-cell simulation is employed to verify the initial expectation.The results show that, with the use of an electron beam of 640keV and 8.4kA guided by the magnetic lield of 0.6 T, a stable and monochromatic X-band microwave output of 4 GW in peak power is achieved, and the average efficiency is over 30%.