half life

Research on the Relationship of Citing Half Life and Price Index

引文半衰期与普赖斯指数之间的数量关系研究

Type and Its Applications of the Half Life Calculation of Scientific Literatures

文献半衰期的类型及其应用

A measurement system for the half life of radionuclide

放射性核素寿命测量系统

This half life of technical skills is without parallel in any other industry .

技能的日新月异是其它任何行业都无法相提并论的。

On half life and plateau concentration of nonlinear elimination drugs

关于非线性消除药物半衰期和坪浓度的研究

The half life time of the enzyme was 10 min at 70 ℃ .

酶在70℃的半衰期为10min。

Recovery half life and degrees of gas exchange variables ? were ? calculated .

连续测量运动及其恢复期气体交换参数，并计算气体交换参数恢复半衰期和恢复程度。

CONCLUSION : The elimination half life of NGF in mice was short .

结论：NGF在体内消除半衰期较短。

A method for burning of actinides and fission products with long half life

一种烧毁锕系元素和长寿命裂变产物的方法

Objective To explore the half life and retention of Imipenem in the third space .

目的探讨严重烧伤后抗生素在第三间隙水肿液中的半衰期和潴留状况。

The half life time was about 12 hours for both the active and passive smokers ;

主、被动吸烟者的代谢半衰期均约为12小时；

Before ablation , stop all cardiovascular active medicine for more than 5 half life .

消融前均停用各种心血管活性药物5个半衰期以上。

The Sun is near half life expectancy .

太阳快到其生命的一半了。

Most macro lenses can produce an image which is half life size on the film .

多数微距镜头可以产生实物一半大小的影像。

The cases of the time of having medicine arrived at 5 half life were 10 ( 20.8 % ) .

用药时间达5个半衰期（T1/2）10例，占20.8%；

It is the author 's self-description of his half life 's academic achievements .

本文为作者半生学术经历的自述。

Epithermal neutron activation analysis of trace uranium using short half life nuclide 239 U

微量铀的快速超热中子活化法测定

To study the half life period of carotin in spirulina and its forecast methods .

[目的]探讨螺旋藻主要成分胡萝卜素的半衰期与预测方法。

The half life period of modified SOD is 14 h and the effective survival time is 43 d.

修饰SOD的半衰期为14h，有效保存期为43d。

Cytokines have short half life , and only promote the wound healing by about 10 % .

细胞因子疗法存在半衰期短的问题，促愈速率仅增加10%左右；

In the present work , the half life of ￣( 79 ) Se has been measured using radioChemical method .

本工作应用放化法测量了￣（79）Se的半衰期。

The activity energy is about 7 KJ , and the half life in 200-240 is 40 min.

反应活化能约为7KJ左右。200～240℃时反应的半衰期约在40min左右。

In serum , the half life of modified enzyme was 90 h , 45 times of native enzyme 's.

在血清中PEG化蒜酶的半衰期为90h，是蒜酶的45倍。

Objective : To study stability of stable chlorine dioxide , and predict its half life and term of validity .

目的：研究稳定态二氧化氯的稳定性能，并预测其半衰期及有效期。

Half life of ranitidine in patients with peptic ulcer , hepatic cirrhosis and chronic renal failure

消化性溃疡、慢性肾功能衰竭和肝硬化病人中雷尼替丁半衰期的观察

Usually free radical has better activity and shorter half life , hence there have many methods for us to study free radical .

由于自由基活性高、半衰期短，其研究方法呈现多样化的特点。

Half life time , simulated by a dispersion model , can represent the exchange ability of an area more completely and objectively .

认为以水质模型模拟半交换时间研究海域的水交换能力更全面、客观。

The half life of endosulfan was shorter than it in soil for the complexity of wetlands .

由于人工湿地的复杂性，其降解半衰期比土壤中明显缩短。

Determination of the half life for a new nuclide 239 pa by analyzing the decays of a radioactive series

利用递次衰变关系确定新核素~（239）Pa的半衰期

Half life determination of bcl-2 and GAPDH mRNA in sinusoidal endothelial cells and Kupffer cells of rat liver

肝窦内皮细胞和枯否细胞中bcl-2和GAPDHmRNA半衰期的测定