查询词典 free radical

The AM1 method was used for a quantum chemistry study of the phenol hydroxylation reaction mechanism. The possible reaction path of the phenol and oxyhydrogen free radical was optimized, and the structures of stable intermediates in the reaction mechanism were also obtained.

本文还首次采用AM1方法对苯酚羟基化反应机理进行了量子化学研究，将苯酚与氢氧自由基的反应沿可能的反应路径进行几何优化，得到反应历程上相关驻点稳定构型的三维结构。

AIM:To investigate the effects of oxygen free radical metabolism on pathogenic mechanism of chronic obstructive pulmonary disease.

目的 ：探讨氧自由基代谢在慢性阻塞性肺疾病发病机制中的作用。

The free radical will bring about lipid peroxidase and the damage of protein andDNA in human body.

自由基增多会造成机体脂质过氧化和蛋白质、DNA等分子的损伤，可对生物膜系统造成危害。

It was first certified that the reaction of 〓/phosphine insome solvent happen through free radical mechanism in our study.

本研究首次证明了〓与膦反应在某些溶剂中是以自由基机理进行的。

Riboflavin undergoes photodecomposition with resulting production of free radical containing products.

核黄素，经光解作用而生成含有自由基的产物。

Photopolymerization can be divided into two categories, one is free radical polymerization, and another is cationic polymerization.

紫外光聚合技术主要分自由基光聚合和阳离子光聚合两种机理。

The oxygen of output in phototrophic culture is much more than the input in the heterotrophic culture, the active high concentration oxygen bring out free radical O_2~- to a great extent, which is tremendously devastating.

螺旋藻混合营养培养过程中光合自养放氧量远大于异养耗氧量，高浓度的活性氧极易生成O_2~-自由基，具有极大的破坏性。

The role of the reclaimed rubber: smoke sticky pine tar containing other renewable agent, during which small molecules can penetrate into uniform knot so that sulfur containing rubber between macromolecules to swelling, reticular structure of relaxation, an increase of molecular the distance between chain and oxygen penetration, the other can also serve as free radical acceptor, has inhibited the role of gelation, but also contribute to activating agent to the rubber matrix to speed up the regeneration process of proliferation and can enhance regeneration and plasticity of sticky glue and less polluting, process performance.

对再生胶的作用：粘稠的松焦油吸含其他的再生剂，其间的小分子能均匀渗透到含有结使硫的橡胶的大分子中间，使其溶胀，网状结构松驰，增加了分子链间的距离及氧的渗透，另外还可作为游离基的接受体，有抑制凝胶化的作用，还有助于活化剂向橡胶基质扩散加快再生过程，并能提高再生胶的粘性和可塑性，且污染较小，工艺性能好。

Objective: To study the extraction process of effective components for scavenging free radical from Polygonum multiglorum Thunb.

目的：探讨何首乌中各种清除自由基组分的提取工艺。

Objective To study the effect of progesterone on free radical and apoptosis of hypoxic-ischemic brain damage in newborn rats.

目的 探讨孕酮对缺氧缺血性脑损伤新生鼠神经细胞凋亡及自由基变化的影响。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。