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METHODS: Radix Pseudostellariae from different habitats were analyzed and the total ion current(TIC) chromatographic fingerprint were determined by HPLC-MS. 方法:用HPLC-MS联用技术对不同产地太子参进行分析,测定其总离子流指纹图谱,确定共有峰,并对部分色谱峰进行了初步归属。
total ion current 总离子流
Membrane conducts so little ion current that it almost can not be measurable. 膜所通过的离子流小得几乎无法测量。
The increasing trend of the total ion content from east to west is consistent with their spatial autocorrelation. 河水离子总量自东部向西部递增的趋势在该水系空间自相关图中得到很好的反映.
When the water mass fraction is higher than 50%, its EC is determined only by the total ion content without connection with the moisture. 当基质质量含水率大于50%25后，电导率主要受基质内离子总量的影响，可忽略水分的影响。
A method by cumulative intensity of ion current to analyse isotopic ratio is proposed in present paper. 本文介绍了离子流强度累计测定同位素比的方法。
Associated with ion current detection device, this system can test and compare different kinds of spark plugs. 该系统配合火花塞离子电流检测装置，可以实现对不同火花塞热值进行测试比较的目的。
Figure 2-11 illustrates guarding as applied to measuring the ion current (IC) from an ionization chamber. 图2-11说明保护技术应用于测量电离室的离子电流。
The knock and misfire of the engine are detected by ion current method which is a new way of engine diagnosis. 用离子电流法检测到了发动机爆震和失火的故障现象,为发动机故障诊断提供了一种新的方法;
By using the spark plug, in a spark-ignited engine, as a probe it is possible to measure the ion current. 若使用多个燃烧器，当燃烧器间距缩小至一定距离后，火焰间有使火焰互相加热，减少热散失，进而稳驻火焰的现象。
The arc source produces the arc discharging of cold cathode so that metal plasma is formed and it supplies the high density of metal ion current. 弧源因产生冷阴极弧光放电而产生金属等离子体，形成高密度的金属离子流。
The ash of samples was soaked and dissolved in 0. 5 mol/L HC1. After the addition of total ion strength adjustment buffer(TISAB) , the fluoride contents were detected with the fluoride selective electrode. 灰分用0.;5mol/L HCl浸泡;加入总离子强度调节缓冲剂(TISAB)后用氟电极测定氟。
The isotopic ratio of lithium was determined by cumulating intensity of ion current during evaporation of all samples on evaporation filament. 用热表面离子源测定了锂同位素丰度,在样品全耗尽过程中累计离子流强度。
In order to reduce the potential drift due to the difference of total ion strength on both sides of the electrode, the internal electrlyte consists of a solution with 0.01 M NH_4Cl and 1 M Na_2SO_4. A determination takes 3-5 min. 氨电极内电解质溶液由0.;01M氯化铵和1M硫酸钠溶液组成;以减少电极内外溶液离子强度差别所引起的电位飘移。氮的适用分析范围为5×10~(-3)至略小于1%25。
It indicated that the simulation model was able to well predict both electron number density and ion current density of plume of SPT. 研究表明，所建立的仿真模型能够较好地预测SPT羽流电子数密度和离子电流密度等参数。
From the relation between ion current and multiphoton dynamic parameters photon-ionization cross-section of 4D state in atomic sodium was determined. 由电离流与多光子动力学参数的关系,得到了4D态的光电离截面。
With the aid of this technipue the premature evapora-tion of uranium sample can be precluded and the stablity of ion current isimproved. 本方法不仅提高了热电离效率,改善了离子流的稳定性,而且有效地避免了铀样品的早期蒸发。
Beyond the upper limit of the linear region of an ionization gauge, there is a falloff in the ion current with the increase of the measured pressure. 在电离真空规的线性测量上限部分,离子流随着压强上升而衰降。
We also measured the dependence of fragmental ratio of each ions on laser intensity and laser power index of total ions. 实验还测得了各产物离子信号分支比对激光强度的依赖性和总离子信号的光强指数。
Patch clamp technique is a kind of technique which reflecting membrane molecular activity of one or more ion channel by record ion current of ion channel. 膜片钳技术是一种以记录离子通道的离子电流来反映细胞膜上单一的或多个的离子通道分子活动的技术。