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    CONSTRUCTION AND FEATURES OF A ON LINE MOLTEN TARGET GAS THERMOCHROMATOGRAPHY APPARATUS
    在线熔化靶气相热色谱分离装置的结构和主要特性
    The paper selects carbon monoxide as target gas for fire detection according to combustion product in fire,and combines smoke particles to make multiple detection.
    本文从火灾燃烧产物着手进行分析,确立了以CO作为火灾探测的目标气体,并结合烟雾参量构成复合探测。
    Gas sensor is a kind of sensor that detects the target gas in the atmosphere, for it can induct the physical and chemical property of the target gases rapidly, and transform the chemical signal into electrical signal.
    气体传感器是对气体中所含的特定成分的物理、化学性质做出迅速感应,并将其转化为适当的电信号或光信号,从而对气体种类及浓度做出检测的装置。
    If the catalytic activity is too high, target gas or its reaction intermediates are consumed out at the surface region of gas sensing layer, being unable to induce a change in electrical resistance.
    催化活性太高,则仅能引起材料表层、而不能引起材料整体的电学性质改变,从而灵敏度也低;
    Quartz crystal microbalance gas sensor is a new-fashioned mass effect sensor. By using an AT-cut quartz crystal as an energy-exchange organ and the sensitive film on quartz crystal surface as a sense organ, it transfers the concentration signal of target gas to frequency signal, accordingly achieves detecting of gas concentration.
    石英晶振微天平(Quartz Crystal Microbalance,QCM)气体传感器,是以石英晶体表面敏感薄膜为敏感元件,以AT切型石英晶体为换能元件,利用石英晶体的质量—频率变化关系,将待测气体的浓度信号转换成频率信号输出,从而实现气体浓度的检测。
    A study of doubly charged ion mass spectra (2E spectra), the substituents effect and the target gas pressure deppendence of biphenyl derivitives was presented in this work.
    本文研究了联苯取代物双电荷离子2E谱及其取代基效应和靶气压力影响。
    While the TIC of 2E spectra was markedly influenced by the target gas pressure, but the fragmentation pattern of the 2E spectra is independent of it.
    升高靶气压力,2E谱的总离子流迅速升高,而样品离子流占总离子流的百分数却直线降低。 靶气压力影响样品的检测灵敏度,但不影响离子的碎裂途径。
    The spectral features of target-gas and several interfences by Fourier transform infrared spectrometer (FTIS) are analysed. Infrared spectral pattern-recognition methods are applied to the environmental monitoring.
    分析了傅里叶变换红外光谱仪(FTIS)遥测的目标气体和几种干扰物的红外光谱特征,给出红外光谱的模式识别方法用于远距离有毒气体环境的监测。
    In order to carry out the investigations on the short life Hg isotopes produced by the intermediate energy heavy ion reactions with a natural Pb thick target,on line molten lead target gas thermochromatography separation apparatus with a rabbit system has been designed.
    为研究中能重离子轰击天然Pb厚靶生成的较短寿命的Hg同位素产物,研制成功一套带有跑兔系统的气相热色谱分离装置。
    Using large background and target-gas spectrawhich are measured by passive Fouriertransform infrared spectrometer(FTIS) and model of quantitative remote detection pollution cloud spectra, we have quantitatively analysed spectra of pollution cloud. Simultaneously, we discuss in detail the effect of weather conditions of the field, column density and effective radiative temperature of gas.
    在定量遥感污染云团光谱的模型下,对被动傅里叶交换红外光谱仪(FTIS)遥测目标气体和背景光谱做定量分析,讨论了试验场地大气条件、目标气体柱数密度和目标气体等效辐射温度对定量分析结果的影响。
    Using large background and target-gas spectra which are measured by passive Fourier transform infrared spectrometer (FTIS) and least-squares fitting procedures, we have simulated successfully the spectra of pollution gas. Simultaneously, the feature Parameters for pollution cloud, column density and effective radiative temperature of gas are given.
    利用被动傅里叶变换红外光谱仪(FTIS)遥测目标气体和背景光谱数据及最小平方误差拟合方法,成功地解决了探测目标气体柱数密度和目标气体等效辐射温度。
    Especially, the resistance of V2O5 film could be recovered after removing the target gas without conducting an additional desorbing process at the tested temperatures.
    在SO2气体去除后,薄膜的电阻值能恢复到初始状态,气敏过程可反复进行。
 

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