在受动力学限制的化学反应中,活化能 Ea 为活化碰撞的平均摩尔能量与所有碰撞的平均摩尔能量之差;而能垒E为活化络合物与反应物的零点能之差。
...状态:一种是天然构象,一种是非天然构象,而且处于这两种低能量状态的多肽链的相互转变由于要克服较高的能垒(Energy Barrier)而难以实现,那么在蛋白质折叠过程中就会有两种途径相互竞争,一种是正确折叠形成天然构象的途径(On-pathway),另一种是错误折...
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In which the ethylene protonation shows the highest energy barrier and is confirmed as the rate-limiting step.
其中乙烯质子化反应能垒最高,为速控步骤。
参考来源 - HHowever, the external electric field in tranverse direction or the substitution atom N on the CNT surface can obviously lower the energy barrier for water chemisorption.
但是,当存在外加横向电场或掺杂N原子时,水分子在(8,0)碳纳米管表面吸附的能垒都有明显地降低。
参考来源 - 小分子在碳纳米管表面吸附和扩散的第一性原理研究·2,447,543篇论文数据,部分数据来源于NoteExpress
进一步的研究表明,低1,2-链节含量对应着较低的分子链内旋转势垒和内旋转异构化能。
It has shown that less 1, 2-unit content corresponds to lower potential barrier of internal rotation and hence to lower energy of rotational isomerization.
桃李明年能再发,明年闺中知有谁?三月香巢初垒成,梁间燕子太无情。
Next year, though once again you may peck the buds, From the beam of an empty room your nest will fall.
由于较低的入射道库仑位垒、较低的不对称裂变谷中的条件鞍点和较小的中子分离能,一般地说,丰中子同位素的超重核形成截面明显增强。
The formation cross sections of the neutron-rich isotope are, generally speaking, obviously enhanced due to the lower Coloumb barrier, lower height of the conditional saddle-point…
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