1) alterable preexponential factors
变指前因子
2) pre-exponential factor
指前因子
1.
42 kJ/mol,pre-exponential factor is lnA=13.
42kJ/m o l、指前因子lnA=13。
2.
The results show that the assumption that activation energy E and pre-exponential factor A change with temperature is approximate.
结果表明,Arrhen ius公式中活化能E和指前因子A与温度无关的假设是近似的。
3.
The results show that there are obvious effect of the size on the reaction order,the rate constant,the activation energy and the pre-exponential factor,that with the particle size decreasing,the rate constant and the reaction order increase,the pre-exponential factor and the apparent activa.
结果表明:反应物粒度对多相反应的反应级数、速率常数、表观活化能和指前因子均有较大的影响;随着反应物粒径的减小,表观活化能和指前因子减小,而反应级数和速率常数增大,并且速率常数和表观活化能与反应物粒径的倒数呈线性关系;这些影响规律与理论模型是一致的。
3) fixed preexponential factors
固定指前因子
4) pre-exponential frequency factor
指前频率因子
1.
By varying separately the pre-exponential frequency factors,the simulations show that smoldering spread rate increases with the increasing of A2(fuel oxidation),but decreases with A1(fuel pyrolysis) and A3(char oxidation).
通过改变3个反应指前频率因子发现:增大A2(燃料氧化频率因子)会加速阴燃,增大A1(燃料热解频率因子)和A3(焦炭氧化频率因子)均会减小燃料阴燃传播速度。
5) antecedents
[英][,æntɪ'si:dnt] [美]['æntə'sidṇt]
前因变量
1.
A Study on Antecedents and Performance Consequence of Export Market Orientation;
出口市场导向的前因变量与绩效结果研究
2.
The paper reviewed and analyzed some important issues about CWB, including its conceptual structure, antecedents and the appraisal sources.
文章对反生产行为的概念结构、前因变量和评价源问题等方面进行了回顾和分析。
3.
imulated team experiments were conducted to examine group composition characteristics as antecedents of shared mental models in two different information-sharing teamwork settings.
以192个被试组成64个三人团队,通过计算机完成团队合成任务,从群体合成特征的视角出发探讨共享心理模型的前因变量。
6) proinflammatory factors
炎前因子
1.
Expression of nuclear transcription factor-κB and proinflammatory factors mRNA in membrane of proliferative vitreoretinopathy;
增生性玻璃体视网膜病变增生膜内核因子κB与炎前因子mRNA表达
2.
Detection of mRNA production of proinflammatory factors in cultured RPE using in situ hybridization;
原位杂交法检测视网膜色素上皮细胞炎前因子mRNA的表达
3.
Objective To observe the expression of nuclear transcription factor-κB protein and proinflammatory factors messenger RNA(mRNA) in periretinal membrane (PRM)of proliferative vitreoretinopathy(PVR).
目的 观察炎前因子mRNA和核因子κB(nucleartranscriptionfactor κB ,NF κB)在增生性玻璃体视网膜病变 (PVR)增生膜中的表达情况。
补充资料：指前因子
分子式：
CAS号：
性质：阿伦尼乌斯公式k=A·e-Ea/RT中，k、R、T、Ea分别是化学反应速率常数、摩尔气体常数、反应温度及活化能，式中的A称为指前因子。它是一个只由反应本性决定而与反应温度及系统中物质浓度无关的常数，与k具有相同的量纲。A是反应的重要动力学参量之一。
CAS号：
性质：阿伦尼乌斯公式k=A·e-Ea/RT中，k、R、T、Ea分别是化学反应速率常数、摩尔气体常数、反应温度及活化能，式中的A称为指前因子。它是一个只由反应本性决定而与反应温度及系统中物质浓度无关的常数，与k具有相同的量纲。A是反应的重要动力学参量之一。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条