反应作用

In conjunction with experimental data and curve fit, we can obtain the relative rate constants of various paths of type Ⅰ and Ⅱ mechanisms in photosensitization.

结合实验数据和曲线拟合，可求得光敏作用过程中Ⅰ、Ⅱ型机制各反应历程(产生〓O〓、〓及PQP·〓)的相对速率常数。

It was found that 〓 and 〓 are all the important intermediate species in both solutions and DNA complexes, moreover, the quantum yield of 〓 is competitive to that of 〓 These results suggest that the photosensitization of AMD proceeds via both type Ⅱ and type Ⅰ mechanisms.

这些实验结果说明，放线菌素D的光敏作用是通过能量转移和电子转移两种反应途径进行的。

Compared with HA in water-contained organic solvents, the pigment in micelle had higher pKa value and higher fluorescence quantum yield. Moreover, the quantum yield of active species produced from photosensitization, 1O2 and ·OH, increased as well. As a result, the photosensitivity of HA was enhanced.

相对于含水有机体系，HA在胶束中基态的 pKa值升高，荧光量子产率增大，光敏反应产生的活性中间体1O2 和·OH的产额增加，从而提高了其光敏活性，这在光敏损伤作用中具有重要的生物学意义。

The change of photosensitizer diffuse characteristic have a great effect on the producing of singlet oxygen in epidermis and dermis , but no use in vessel.

光敏剂的特性对光动力治疗鲜红斑痣有明显的影响，数学仿真能较全面地反应这种作用的特点和意义。

Phototropism plays an important role during early stage of plant development, and it is a favorable biological characteristic for plant organs to adapt environmental requirement.

摘 要：向光反应在植物早期发育过程中具有重要的作用，是植物器官适应环境、向有利方向生长的一种良好生物学特性。

A rapid synthesis and the mechanism of the reaction have been discussed.2.5 Synthesis of Phthalein Indicators under Microwave Irradiation.

提供了一种简便快速合成标题化合物的方法，并对反应机理进行了讨论。 2.5 微波作用下酞类指示剂的快速合成。

Based on the known physiologic behavior of T cells, the following may clarify the role of inflammation in COPD.

基于已经对T细胞的生理行为有很好的认识，下一步需要阐明的是在COPD炎症反应中的作用。

Vesicatoria and compatible bacterial phytopathogen Xoo with Nipponbare were used to investigate the production of NO, the activities of iNOS and the role of NO in hypersensitive response.

NO在过敏性反应中的作用。研究结果表明，1。

BFGF immune positive cell was found in cerebral pia mater ependyma and choroid plexus.2 NO determination resultCompared with control group, NO levels in drug - taking group at 12 h, 24 h, 3 d of reperfusion decreased remarkably.

提示BFGF表达的增加，对促进缺血周围区的损伤修复有重要作用。是脑组织抵抗缺血＼缺氧的一种生理性反应，从而保护神经元。

The characteristics of glass microelectrode recorded electrical activity of nociceptive neurons in the caudate nucleus elicited by microinjection of GABA and blockage by picrotoxin were studied in 53 Wistar rats.

在53只成年W istar大鼠上，用玻璃微电极引导神经元放电，观察了尾核内注射Y-氨基丁酸后，尾核痛反应神经元放电的变化和印防己毒素(picrotoxin， PIC)对GABA作用的阻断效应。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。