查询词典 activation energy

Analysis also indicate that activation energy of degradation in compound-stabilizer systems are considerably greater than others, among these POM/COPA/EVOH48 has the highest activation energy reaching220.19 KJmol-1 in nitrogen which is three times the value of blank POM (77.74 KJmol-1), and 530.37 KJmol-1 in air which also exceeds the blank POM (354.59KJmol-1) by fifty percent.

分析结果还表明复合稳定剂体系的活化能要明显高于其它体系。

The new elucidation of distributed activation energy was given in which not only an analytic expression of activation energy was obtained for the first time,but also the theoretical proof of Miura′s integration method in DAEM model was realized.

对分布活化能模型进行了新的理论阐述，不仅给出了分布活化能模型中活化能项的解析表达式，得到了Miura积分法的理论证明，还系统研究了这一新的DAEM表述对焦油馏分模拟蒸馏二级反应体系的适用性。

The results show that the recrystallization activation energy of both materials is larger than that of aluminum self-diffusion activation energy.

结果表明，两种材料的再结晶激活能均大于纯Al的自扩散激活能，并且复合材料的再结晶激活能略大于铝合金基体的再结晶激活能。

Activation energy of deformation is close to self-diffusion activation energy of α-Fe grain boundary.

与α Fe晶界自扩散激活能接近。

Yet, at the temperature range of 700～750℃, the deformation activation energy was much higher than the self-diffusion activation energy of grain boundary.

在700-750℃，变形激活能远大于晶界自扩散激活能，位错运动是激活能升高的原因。

At the temperature range of 800～850℃, the deformation activation energy was very close to self-diffusion activation energy of grain boundary, which shows the main deformation mechanism is grain boundary sliding controlled by grain boundary diffusion.

在850℃变形激活能与晶界自扩散激活能十分相近，表明晶界扩散控制的晶界滑动是超塑性变形的主要机制。

Based jellification dynamics theory that the larger the jellification activation energy, the greater the lubricant's jelling tendency, it is advisable to analysis the whole jellification process in attempt to find out maximum jellification activation energy Emax and its ambient temperature Tmax, as a ground for judging the lubricant's pumpability.

根据凝胶动力学理论，凝胶活化能越大，润滑油的凝固趋势越大，因此对润滑油应分析其凝胶全过程，从中找出最大凝胶活化能Emax以及开始出现最大活化能的温度Tmax，作为润滑油低温可泵性判据。

Marmatite ; pressure leaching ; iron kinetics ; reaction activation energy ; diffusion activation energy

高铁闪锌矿；加压酸浸； Fe动力学；反应活化能；扩散活化能

The research show that from anthracite, lean coal to bituminous, reaction rate become more and more large and ignition activation energy become more and more small; ignition activation energy falls and reaction rate increases as the volatile content increases;With the carbon content of dry ash-free basis increasing, ignition activation energy increases and reaction rate falls.

结果表明：从无烟煤，贫煤到烟煤，其反应速率越来越大，频率因子越来越小，着火活化能越来越低；挥发分增加，活化能减小，反应速率变大；干燥无灰基固定碳含量增加，着火活化能增加，反应速率减小。

The calculated results with B3LYP/6-31G-DFT show:(1)the molecular total energy of benzofuroxan is lower than that of o-dinitrosobenzene;(2)the activation energy(Ea+=51.0kJ/mol)of forward reaction that benzofuroxan isomerises into o-dinitrosobenzene,is in agreement with the experimental(58.6kJ/mol)provided by reference,and the activation energy(Ea-=4.6kJ/mol)of back-ward reaction is very small.It is concluded thereby that benzofuroxan is more stable than o-dinitrosobenzene.In addition,the corresponding ab initio calculations at the level of HF/3-21G,HF/6-31Gand MP2/6-31G//6-31G were completed,and it was found that the calculated results by B3LYP-DFT method are superior to those from ab initio calculation.

结果表明，苯并氧化呋咱的分子总能量比邻二亚硝基苯的低；由苯并氧化呋咱异构为邻二亚硝基苯的正向反应活化能（Ea+=51.0kJ/mol），与文献实测值（58.6kJ/mol）较接近，而其逆向反应活化能（Ea-=4.6kJ/mol）很小，从而揭示了苯并氧化呋咱比邻二亚硝基苯更稳定·此外，进行了HF/3-21G、HF/6-31G和MP2/6-31G//6-31G水平下相应的计算，发现B3LYP-DFT的结果较abinitio为优。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。