查询词典 radicals

TCM may modulate the glial cells through the following mechanisms: inhibiting expression of iNOS, thereby minishing the toxicity of NO and its oxygen free radicals; inhibiting overactivation of astrocytes and overexpression of GFAP in acute cerebral ischemia and cerebral hemorrhage; promoting glial cells' secretion of NGF which can be caused by ischemic injury; inhibiting the nervous system's immune inflammatory response; and so on.

中药调节神经胶质细胞活性的机制可能包括：（1）抑制iNOS表达，从而抑制NO及其产生的氧自由基的毒性；（2 抑制脑缺血和脑出血急性期星形胶质细胞的过度活化和GFAP的过度表达；(3)上调缺血损伤导致的神经胶质细胞分泌NGF；(4)抑制神经系统的免疫炎症反应等各种途径。

The analysis of decomposition mechanisms of the catalyst surface revealed that one of the mechanisms is that activated gas phase O2 captures the hydrogen of the organic pollutants to produce free radicals, which then initiate the catalytic reaction, and produce CO2 and H2O ultimately; and the other mechanism is that the activated organic compounds attack the crystal lattice oxygen, which reduces the valances of the transition metals, then the oxidant of the oxygen oxidizes the transition metals to high valances, which realize the self oxidation-reduction of the catalyst.

催化剂表面有机物降解的机理分析表明，一种反应机理为气相中的O2活化后直接夺取有机污染物的氢，产生自由基，并引发催化反应，最终生成CO2和H2O；另一种反应机理为活化后的有机物直接进攻催化剂的晶格氧，并且使得过渡金属由高价态变为低价态，反应气中的O2再将低价态的金属氧化为高价态，实现催化剂自身的氧化还原循环。

While using Id閎閚one, which has a short chain and hence is almost identical to the ubiquinone, one obtains an efficient protection against the free radicals , generated by the iron overload.

当使用具有一条短链的醌时，机体获得了一个有效的对抗由铁超载产生的自由基的蛋白质。

The humidity resistance and the sensitivity to chemical warfare agents simulants of the tuned films were also investigated.Self-assembled LBL polyaniline films were prepared from aniline monomers by in situ polymerization and the mechanism of film formation was discussed. It was proposed that the self-assembly of polyaniline occurred through the quick absorption of aniline monomer cations or aniline monomer cation radicals on the glass surfaces by electrostatic attractions to form homogeneous polymerization centers, then increased gradually by the way of upright to the glass supports for extensity, leading to the polyaniline chain growth. The polyaniline was doped under acidic condition to absorb anionic polyelectrolyte, such as sodium polystyrene sulfonate based on the electrostatic force, or to adsorb polymer based on hydrogen-bonding interactions, for example Polyvinyl Alcohol, and then recycled to fabricate_n or_n self-assembled multilayer films.

跟踪了原位聚合的具有纳米结构的聚苯胺多层自组装膜的成膜过程，提出了该自组装膜的成膜机理：聚合反应初始阶段的苯胺阳离子或苯胺阳离子自由基通过静电作用快速吸附到带负电荷的基片表面，形成均匀的聚合中心，然后以垂直于基片的方式进行链增长生成PANI；PANI在酸性条件下经现场掺杂后带正电荷，再通过静电作用吸附带负电荷的聚电解质如聚苯乙烯磺酸钠，或通过氢键作用吸附聚合物如聚乙烯醇，这样循环LBL-SA即得到_n或_n等原位聚合聚苯胺自组装膜。

Despite a crackdown in Pakistan, its cities remain hosts and seedbeds for radicals.

尽管在巴基斯坦开展了打击活动，各城市仍活跃着并产生出狂热分子。

Electron transfer reaction between the radical cations of purine nucleotides and some aromatic amino acids was studied by use of pulse radiolytic techniques. Time-resolved spectroscopic evidence revealed that the one-electron-oxidized radicals of dAMP and dGMP can be efficiently repaired by tyrosine and tryptophan.

鉴于在DNA光敏损伤过程中主要生成嘌呤碱基阳离子自由基，利用脉冲辐解技术研究了嘌呤碱基阳离子自由基与部分芳香氨基酸的相互作用，获得了酪氨酸和色氨酸对单电子氧化的dAMP和dGMP经快速电子转移修复的瞬态吸收光谱证据。

John Limbert, one of the American embassy hostages and now a professor of politics, sees striking parallels with the way that radicals in 1979 set out to create a fait accompli to radicalise the climate.

约翰·林伯特曾是当年美国大使馆人质中的一员，如今身为政治学教授的他认为：1979年的激进分子在制造一种既成事实、并以此来激化气氛的方法上，与如今的人质危机有着惊人的相似之处。

Formation cross sections of complexes of the electronically excited NCO radicals and quenchers were calculated by means of a collision complex model.

我们还用碰撞络合物模型模拟了NCO自由基的碰撞猝灭过程，并计算了NCO与碰撞伴侣间的络合物生成截面。

Formation cross sections of complexes of the electronically excited NCO radicals and quenchers were calculated by means of a collision complex model.

在G2（B3LYP／MP2／CC）水平上对NCO+O反应体系进行了ab initio理论计算。得到了反应势能面上的各物种的优化构型参数和能量，并对可能的反应通道进行了计算和分析。

Fever, endogenous pyrogens (IL-1, IL-2, TNF, IFN), and oxygen free radicals in inflammation can all induce the synthesis of HSPs in cells.

已有报道表明，某些病毒和化学物质转化的细胞，肿瘤细胞系以及人类肿瘤细胞中HSPs的表达增加。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。