自由基

它通过稳定正常组织中DNA分子，消除氧自由基，延迟由细胞因子启动的细胞凋亡过程等而发挥保护作用。

It can stabilize DNA molecule , eliminate free radical of oxygen and delay apoptosis by cytokines .

OH自由基属于活性氧自由基，具有强氧化作用，在生物体内可损伤机体。

OH radical is one of the reactive oxygen species , and is very oxidative .

按照这一图式，自由基rc是由某些未详细说明的方法产生的。

According to this scheme , radicals RC are generated by some unspecified means .

这些丁基自由基促使苯乙烯聚合速度加快。

These butylraidicals bring about a rapid polymerization of styrene .

被ScienceDirect数据库描述为“化学清洗剂”的羟基自由基是大气中发现的重要化合物，可以和其他有机分子发生反应。

Hydroxyl radicals , described as a " chemical scavenger12 " by Science Direct , are important chemical compounds found in the atmosphere due to the reactive nature with other organic molecules13 .

如果没有第二个电子，这些自由基是不稳定的，因此它们会清除其他细胞，以找到一个与之配对的电子。

Without a second electron , these free radicals are unstable7 , so they scavenge other cells to find an electron to pair with .

在日常生活中，体内的化学反应会将氧分子分裂成带有未配对电子的原子，这些电子称为自由基。

During daily life , chemical reactions in your body can split oxygen molecules5 into atoms with unpaired electrons , which are called free radicals6 .

研究人员先前了解到，闪电可以有助于清洁大气，但是没有证据表明闪电可以产生羟基自由基这样的化合物。

Researchers previously understood that lightning could help to clean the atmosphere , but there was no evidence that it could generate compounds like these radicals .

激光诱导荧光法测量OH自由基中激光产生的OH自由基转动能级布居及其对测量的影响

The population of hydroxyl rotation level and it 's influence to LIF

类黄酮化合物对AGE的抑制机理与其抗氧化性、消自由基作用有关。

It was considered that the inhibitory mechanism on AGE is concerned with antioxidation and dissolving the free radical .

OH自由基引发的甲烷光化学氧化体系中有机过氧化物的研究

Studies on the formation of organic peroxides in the oh - initiated oxidation of ch_4

对流层中的OH与HO2自由基的研究进展

Advances in the Study of Tropospheric OH and HO_2

仿SOD催化剂的合成及其清除氧自由基作用

The Synthesis of the Catalyst Imitating SOD and Its Functions of Scavenging Oxygen Free Radicals

所得FA和HA均含有烷基和稳定自由基。

All of the FA and HA contain alkyls and stable free-radicals .

大气氢氧自由基（OH）是对流层大气中的主要氧化剂之一，在大气化学过程中占有重要地位。

Hydroxyl radical ( OH ) is one of the most important species in the atmosphere as a major oxidant .

慢性脑缺血诱导的自由基损伤、谷氨酸神经毒性作用的AD病因学意义

The Etiological Meaning of the Neurotoxic Lesions of Free-radical and Glutamic Acid Induced by Chronic Cerebral Ischemic in AD

纳米TiO2光诱导产生羟基自由基的ESR研究

ESR Study on the Photoinduced Production of Hydroxyl Radicals by Nano-TiO_2

紫外光诱导下的固体胆红素自由基性质的ESR研究

ESR studies on powder bilirubin free radicals induced by UV

对瞬态吸收光谱中的主要吸收峰作了归属，表明中间产物为OH加合物、H加合物、苯自由基等。

The main absorption peaks in these spectra were attributed to OH-adduct , H-adduct and C 6H 5 as the intermediate products .

高等植物光系统Ⅱ中强光照射产生超氧阴离子自由基的ESR探索

ESR Studies on the Superoxide Radicals Generated in Photosystem ⅱ of Higher Plant

用超氧化物歧化酶可抑制的铁化细胞色素C还原法测量氧自由基（superoxideanion，O·2-）的产量；

Superoxide anion ( O2 · - ) generation was measured by superoxide dismutase - inhibitable ferricytochrome C reductase ;

目的：观察注射维生素C和芦丁后，急性疲劳性游泳运动小鼠机体各组织自由基代谢的变化情况。

AIM : To observe the changes of metabolism of free radical of every constitution of acute tired swimming exercise mice after injecting with vitamin C and rutin .

方法采用紫外可见分光光度仪等先进设备检测临床结肠癌标本中氧自由基中间产物MDA含量，进而分析氧自由基与结肠癌发病的内在联系。

Methods Using ultraviolet visible light spectrometer to determine the content of oxygen free radical in colonic cancer cell .

溴甲酚绿测定Fenton产生的羟基自由基

Detection of Hydroxyl Radical in Fenton Reaction by Bromocresol Green Oxidative Assay

目的：探讨精神分裂症自由基代谢酶超氧化物歧化酶（SOD）在氟哌啶醇治疗前后的变化。

Objective : To study of effect of haloperidol treatment on superoxide dismutase ( SOD ) in chronic schizophrenic patients .

用ESR研究纸张中的自由基

ESR Studies of Free Radicals in Paper

OH自由基捕捉剂加速超声引发乳液聚合的研究六氯苯与OH自由基的反应

Enhancement of ultrasonically initiated emulsion polymerization rate of styrene using aliphatic alcohols as hydroxyl radical scavengers Studies on the Reaction of OH Radical with Hexachlorobenzene

GSH对氧自由基介导的细胞凋亡保护机制研究

Study of Mechanisms Underlying Protective Effects of GSH on Apoptosis Mediated by Free Radicals

用对苯二甲酸测定铜催化Fenton反应产生的羟自由基

Determination of · oh generated in copper ion catalyzed Fenton reaction by terephthalate

NH2自由基电子激发态荧光寿命的理论计算

Theoretical investigation on the emission lifetime of electrical excited state for NH_2 radical