Novel intelligent and high performance conductivity detector for ion chromatog-raphy

结合电子测量技术和计算机智能控制技术,设计了一种新型高性能智能化的离子色谱电导检测系统。系统采用两级分布式控制方式,在有效抑制噪声的同时,能够精确并且智能化的完成离子色谱信号的放大、采集、处理、谱图显示等功能。文章介绍了该系统的硬件组成、软件设计以及系统工作的基本原理,并给出测量实例。实验结果表明系统运行良好,结果可靠,完全可应用于实际的离子色谱检测。Combined with the technology of electronics measurement and computer intelligent control, a novel conductivity detector for ion chromatography with high performance and intelligence is presented in this article. The system implements a two-level distributed control, so it can not only suppress the noise effectively, but also accomplish such functions as magnifying, gathering and processing the ion chromatography signal precisely and intelligently, as well as displaying the spectrum of the ion chromatography signal. This article introduces the hardware construction and software design of the system and the principle of the system working. A measurement instance is also presented in this paper. The experimental result shows that the system runs well and the datum are reliable, so it can be applied in practical detection for ion chromatography completely.福建省科技资助项目(2001H081);; 厦门市科技计划资助项目(3502Z2001251

大型ヘリカル装置のIC聾アンテナと加熱特性

Ion－cyclotron heating was applied to the Large Helical Device by using single, trap loop antennas located at the outward side of the toroid. Good experimental results were obtaine with adequate plasma　confining configurations and antenna conditionings．Loading resistance of the antenna was2－8Ohm and　this was a sufficiently large value. Various heating characteristics were investigated by changing the　heating modes, ion species and magneticfield configurations．The minoriy-ion heating mode resulted in the best heating performances，and the heatin gcharacteristics largely depended on the cyclotron resonance positions．There were some unique features due to the heliotron configuration．These results showed the　effectiveness of the ICRF heating in a helical device and the appropriateness of the ICRF antenna design　in the LHD

Research on The Multi-Channel Embedded ECG Monitor

心脏疾病是威胁人类健康的一大杀手，其发病具有很大的偶然性和突发性，因此，利用心电监护仪对心脏病患者的心电图进行监测报警，具有很重要的临床应用价值。自从心电监护仪问世以来，小型和便携化一直是其研究与发展的重要方向之一。 嵌入式技术是计算机技术广泛应用和发展的结晶之一，是现代计算机应用的扩展和外延。嵌入式技术具有硬件体积小、软件代码精练、高度自动化、响应速度快等特点，特别适合于要求实时和多任务的应用体系。 本文旨在把嵌入式技术应用到心电监护上，研究一种嵌入式心电监护系统，使得心电监护系统在小型、便携化的同时，又能保持多功能。 本文结合嵌入式实时操作系统VxWorks，在PC/104工控机上具...Cardiac disease is one of the great threats to human health, and it comes on accidentally and paroxysmally. So it has very important value in clinical application to surveil the patient’s ECG by heart monitor. Miniaturization and portability has always been an important field for study and development since ECG monitor came into being. Embedded technology is the outcome of extensive application o...学位：理学硕士院系专业：计算机与信息工程学院电子工程系_无线电物理学号：20003000

酸浸法从黏土钒矿中提钒

研究采用直接加氧化剂酸浸法处理河南浙川黏土钒矿，对酸浸提钒阶段各影响因素进行优化。结果表盟，在100℃，二氧化锰用量为3％，硫酸浓度为30％，酸浸时间为9h，液固比为4：1的条件下，V2O5浸出率可达92％。与传统的钠化氧化焙烧法相比，减少了焙烧过程，有利于环境保护

酸浸法从黏土钒矿中提钒

研究采用直接加氧化剂酸浸法处理河南浙川黏土钒矿，对酸浸提钒阶段各影响因素进行优化。结果表盟，在100℃，二氧化锰用量为3％，硫酸浓度为30％，酸浸时间为9h，液固比为4：1的条件下，V2O5浸出率可达92％。与传统的钠化氧化焙烧法相比，减少了焙烧过程，有利于环境保护

沼泽绿牛蛙病毒的分离及其细胞感染的初步研究

沼泽绿牛蛙病毒的分离及其细胞感染的初步研究张奇亚，李正秋，江育林，梁绍昌，桂建芳（中国科学院水生生物研究所，武汉４３００７２）关键词沼泽绿牛蛙（美国青蛙），病毒，细胞感染ＰＲＥＬＩＭＩＮＡＲＹＳＴＵＤＩＥＳＯＮＶＩＲＵＳＩＳＯＬＡＴＩＯＮＡＮＤＣＥＬ..

中华鳖病毒病原的发现

<正>中华鳖(Trionyx sinensis)由于其独特的营养和药用价值,近年来其养殖业迅速发展,产量直线上升.但随着养鳖业的发展,鳖的疾病日趋严重,已成为制约养鳖业发展的关键因素.当前虽然已观察到了穿孔病(也称疖疮病、空穴病)、红脖子病(也称红斑病)、腐皮病、水泡病、白斑病、白点病、水霉病等病症,但由于病原研究的滞后状况,一病多症、一症多病原的情况迄今尚无法正确判断,造成防治工作的被动.特别是在养殖过程中,一旦发病,往往是多病并发,很难治愈,经济损失十分严重.最近,我们在养殖过程中就遇到了多症并发、