活化

The apparent degradation reaction activity energy of PET and PC are evaluated to be 27. 19kJ. mol〓 and 35. 75kJ. mol〓 in system noncritical region respectively. The mass transfer and scatter, which are the controlling factors of degradation in system noncritical region, change into chemical reaction in system critical region, where the activity energy of PET and PC are evaluated to be 89. 79kJ. mol〓 and 80.61kJ. mol〓 respectively.

在系统的非临界区域，PET、PC的降解为液固相反应，反应速率很低，其降解反应表观活化能分别为为27.19KJ.mol〓和35.75KJ.mol〓，为传质、扩散控制；在系统的临界区域，PET、PC的降解为液态均相反应，降解反应速率显著提高，其降解反应表观活化能分别为89.79KJ.mol〓和80.61KJ.mol〓，为化学反应控制。

The values of enthalpy and entropy for monomers interacting with solvents have been calculated. In accordance with these results, the dependance of monomers reactivity radio on the polymerization temperature has been discussed.

用NMR法测定了单体与溶剂的络合常数；计算了单体与溶剂相互作用的活化能和活化熵，依此对共聚活性与温度之间的关系进行了讨论。

Likewise, brief spontaneous increases in [Ca2+]i, sensitive to BMI and TTX, are observed at the same ages, suggesting that endogenous synaptic GABAA receptor activation can depolarize cells and activate VGCCs.

同样，短暂的[Ca2+]i自然上升对BMI和TTX敏感，可以在相同年龄上观察到，这显示出内圣突触GABBA受体活化可以为细胞去极化，并活化VGCCs。

Here we show that phenylarsine oxide and diamide (both were inhibitors for protein tyrosine phosphatases), but not genistein (an inhibitor for protein tyrosine kinases), adenosine, wortmannin and LY294002 (all were inhibitors for phosphatidylinositol 3- and 4-kinases), could inhibit P-selectin exocytosis on activated platelets and could abolish the P-selectin mediated aggregation of activated platelets to neutrophils.

我们发现蛋白酪氨酸磷酸酶的抑制剂phenylarsine oxide和diamide能够抑制P-选凝素从活化的血小板中外排出来，并能够抑制P-选凝素介导的活化的血小板在白细胞表面的粘附，而蛋白酪氨酸激酶的抑制剂genistein，磷脂酰肌醇3-或4-激酶的抑制剂adenosine、wortmannin和LY294002在这些实验中没有作用。

Here we show that phenylarsine oxide and diamide (both were inhibitors for protein tyrosine phosphatases), but not genistein (an inhibitor for protein tyrosine kinases), adenosine, wortmannin and LY294002 (all were inhibitors for phosphatidylinositol 3-and 4-kinases), could inhibit P-selectin exocytosis on activated platelets and could abolish the Pselectin mediated aggregation of activated platelets to neutrophils.

我们发现蛋白酪氨酸磷酸酶的抑制剂phenylarsine oxide和diamide能够抑制P-选凝素从活化的血小板中外排出来，并能够抑制P-选凝素介导的活化的血小板在白细胞表面的粘附，而蛋白酪氨酸激酶的抑制剂genistein，磷脂酰肌醇3-或4-激酶的抑制剂adenosine、wortmannin和LY294002在这些实验中没有作用。

The effect of temperature on effective diffusivity and the effect of activation on effective diffusivity are discussed.

实验结果表明，活化状态下该催化剂的有效扩散系数略大于制备态，因此制备态下测得的有效扩散系数可用于活化状态下的计算。

The activated donor-type NK cells could prevent gVHD and produce significant GVT effects and also resulted in greater hematopoietic reconstitution if they were at the initial stage of allogeneic BMT in mice. Thereafter, the activated donor-type NK cells were detrimental and could exacerbate the subsequent GVHD, these results also demonstrated that GVT and GVHD could be dissociable phenomena.

①在小鼠异基因骨髓移植的初始阶段，输注供鼠的活化NK细胞能促进造血重建，预防GVHD并同时增强移植物抗肿瘤效应；输注骨髓细胞之后，输注供鼠的活化NK细胞则起到加重GVHD的不良作用；②GVT和GVHD是能够被分开的。

The derived activation energies for both grain-boundary and surface diffusion are obtained from the Cu drift velocity under EM stressing.

对於线宽大於1微米时，主要的晶粒边界扩散的活化能大约比起表面和晶粒边界扩散的活化能高0.2 eV。

The effect of different reaction conditions,such as catalyst concentration,molar ratio of reactants,reaction temperature,reaction time,on the coupling reaction of trioxane and methyl formate synthesizing methyl glycolate and methyl methoxy acetate using sulfuric acid as catalyst has been studied.Through the analysis for the yield of products and system pressure,and comparison with other different acidity catalysts,we considered that the activation of formaldehyde was the control step of reaction rate to the...

以硫酸为催化剂，研究了三聚甲醛与甲酸甲酯偶联合成乙醇酸甲酯和甲氧基乙酸甲酯的反应中，催化剂浓度、原料配比、反应温度、反应时间等条件对反应过程的影响，通过对产物收率和系统压力变化的分析，并结合与其它不同酸强度催化剂的对比，得到甲醛的活化是偶联反应的速率控制步骤，催化剂的酸强度决定其对甲醛的活化能力，是影响偶联反应的主要因素。

Cyclic voltammetry indicated that there were Cr→Cr, Cr →Cr oxidation reaction on anode, while there were Cr→Cr, Cr→Cr, Cr →Cr deoxidization reaction on cathode. The graphite electrodes treated by acid and heating could enhance the reversibility and kinetic of the electrode reaction. The nature graphite electrodes had been eroded during charge/discharge process, while the graphite electrodes by activation could avoide corroding by hexad chromium ion. The reversibility and kinetic of the electrode reaction of chromium ion on activation electrode had been increased, so which indicated that graphite surface augment oxygenous function corps which could increase electrode hydrophile capability.

循环伏安实验表明：铬液流电池的电极反应非常复杂，在阳极存在Cr→Cr，Cr→Cr的氧化反应，在阴极存在Cr→Cr，Cr→Cr，Cr→Cr的还原反应；热处理的石墨电极和重铬酸钾处理的石墨电极能提高电极反应的活性和可逆性；在充放电实验中未处理的石墨电极发生严重腐蚀；分别用这两种方法处理过的石墨电极具有防止六价铬侵蚀的功能；铬离子在活化处理过的石墨电极上的反应活性和可逆性增加，可以认为：重铬酸钾溶液活化处理和加热处理后的石墨表面的含氧官能团增加，电极亲水性增强。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。