查询词典 free radical

Objective To study the effect of progesterone on free radical and apoptosis of hypoxicischemic 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。

Results showed that the hybrid monomer could photopolymerize effectively and both free radical and cationic polymerization processes were improved. When 2-Hydroxy-2-methyl-1-phenyl-1-propanone (1173) was introduced into hybrid system containing UVI-6976, the final conversion of propenyl ether double bond and polymerization rate increased obviously. The comparison of photopolymerization kinetics between hybrid and blend system was investigated as well.

结果表明，以硫鎓盐为光引发剂时，这三种杂化单体均可以有效进行杂化光聚合反应，丙烯基醚和丙烯酸酯双键都显示出较快的反应速度和较高的最终转化率，同时在简单结构的硫鎓盐（UVI-6976）引发体系中加入自由基引发剂2-羟基-2-甲基-1-苯基-1-丙酮（1173）后，丙烯基醚双键的阳离子聚合速率和最终转化率都有了很大提高。

Objective To study the physiopathological character of pneumonia in the aged from the changes of free radical and prostaglandin.

目的 从自由基和前列腺素代谢研究老年肺炎的病理生理特点。

The results showed that the amorphous iron oxide has highly catalytic activity. The intermediate products are pyrocatechin, hydroquinone, benzoquinone and low-grade fatty acid. The mechanism of catalyst oxidation is assumed that the free radical OH attacks benzene cycle at the adjacent position and para-position of OH on phenol so that the benzene cycle is opened and low-grade fatty acid is produced and transformed into CO2 and H2O.

结果表明，非晶铁氧化物催化剂在催化氧化降解苯酚时具有较高的催化活性，苯酚降解的中间产物有：对苯二酚、邻苯二酚、苯醌和低级脂肪酸，其降解机理是羟基自由基攻击苯环上OH的部位或对位而使苯环开环，生成低级脂肪酸，并最终转化成二氧化碳和水，从而使苯酚得以降解。

Several newer methods, such as in vivo spin-trapping, have become available to monitor oxygen free radical flux and quantitate oxidative damage.

通过几种新方法，比如体内自旋俘获，我们已经能够观察到氧自由基的流动，也能够对氧化损伤进行定量。

Hydroquinone could be oxidized into quinone under alkaline condition, and simiquinone free radical was formed as a intermediate of this process.

氢醌在碱性条件下容易被氧化为醌，半醌自由基是这一过程的中间产物。

Manganese and cerium is the oxidative reagents usually employed. In recent years, the oxidative free radical reactions of quinone derivatives have been studied in this laboratory.

锰以及铈是最常使用的氧化性试剂，本实验室也将锰以及铈运用在醌类化合物的环合反应上。

warming kidney and invigorating spleen can decrease the effect of disease oneself to procreation function. At the same time, it possibly could avoid or decrease the harm of CTX on gonad from two directions which are dearing free radical and adjusting gonad axis.

补肾健脾方能减轻疾病本身对生殖功能的影响，并可能通过调节下丘脑-垂体-性腺轴和清除自由基而减轻或对抗CTX所致的性腺损害，为临床安全有效地应用CTX提供科学依据。

This effect may be due to the components of blueberry which function as free radical scavengers.

"他们补充道"这个功效来源于蓝莓本身带有的清除净化的自由基成份。

Objective To investigate the effect of fasudil on learning and memory function and free radical metabolism in cortex and hippocampus of the rats with chronic cerebral ischemia.

目的 观察法舒地尔对慢性脑缺血大鼠学习记忆及皮层线粒体自由基代谢的影响。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。