Research on an active and continuous monitoring system for human respiratory system

Continuous and dynamic measurements of human respiratory parameters are very important for vital diseases of respiratory system during mechanical ventilation. This paper analyzed the structure and mechanical properties of the human respiratory system, and designed an active intervening monitoring micro system for it. The mobile mechanism of the micro system is soft and earthworm-like movement actuated by pneumatic rubber actuator, the measurement and therapy unit of the system is an extensible mechanism with sensors in the front. The micro monitoring system can move in respiratory tract and measure the respiratory parameters in bronchium continuously. Experiments had been done in swine＇s respiratory tract, the results proved that the micro robot system could measure the respiratory parameters in real-time successfully and its movement was smith in swine＇s respiratory tract.     

浅谈青藏高原高含冰量冻土路基施工

文章介绍了青藏铁路格拉段第八标段高含冰量冻土路基工程的施工特点,针对高含冰量冻土所采取的保护措施,即片石通风路基的施工技术作了主要介绍,同时,以实际施工为例,对路基的施工工艺、质量和环境保护所采取的措施也作了一定的说明。     

Compact fiber-optic diode-laser sensor system for wide-dynamic-range relative humidity measurement

A compact fiber-optic diode-laser sensor system for measuring relative humidity is studied. In such a system, a distributed feedback laser lasing near 1877 nm is used as light source while a high-precision Pt resistance as temperature sensor, an accuracy of 0.1% relative-humidity can be achieved. The laser sensor system is able to lock to the absorption peak and calculate the density of water vapor without any additional reference measurements. Using programs built in to the microcontroller unit, the laser system can switch functions between direct measurement at high density and second-harmonic detection at low density. The system can switch between the two modes automatically and work in a wide dynamic range.     

怎样慎戴隐形眼镜

指出配戴隐形眼镜有副作用,须引起配戴者的重视,介绍了不适宜戴隐形眼镜的人群,强调配戴隐形眼镜的清洁保养方法。     

试论科学技术与道德的关系

简明介绍道德对科学技术工作者的影响,分析现有形势,提倡应在科学技术发展时注重道德伦理,并说明了科技对道德的影响因素。     

关于对高速公路养护管理的探讨

通过对高速公路养护管理特点、原则、主要内容的阐述,分析并指出现阶段我国高速公路养护管理存在的问题,并对高速公路养护管理的发展提出了的几点建议。     

先进核能技术研究新进展

利用核能发电世界范围内经历了20世纪70年代的发展高潮和80、90年代的低潮后,现正走向复苏。本文概述：①对新一代(第三代)商用核电机组提高安全性和经济性的要求和研究开发简况;②对更新一代(第四代)核能利用系统的研究前沿动向;③可控热核聚变反应堆的前景展望;④我国核电的发展。     

谢尔宾斯基地毯的稳态势场

对于多孔介质和复合媒质的物理特性的研究,数年来人们普遍采用的是属于“平均场”     

(PrGdYb)_(3-x)(FeAl)_5O_(12)石榴石外延膜及其磁光特性

文中详细讨论了新型磁光材料(PrGdYb)_(3-x)Bi_x(FeAl)_5O_(12)单晶薄膜的外延生长法及所得样品的测试数据。样品比法拉第旋转θ_F～1.6×10~4deg/cm,并有较宽的光谱透过区.     

一种工业过程计算机测试系统模式及实现

针对集中型计算机过程测试系统,本文提出了一种基于三台计算机的系统模式。文中论述了该模式的特点,实现方法及可靠性设计。目前,根据该模式设计的系统已获得实际应用。