free radical

noun

1. 自由基；游离基
   an atom or group of atoms that has an electron that is not part of a pair, causing it to take part easily in chemical reactions. Free radicals in the body are thought to be one of the causes of diseases such as cancer.

1. 自由基;游离基
   Free radicals are atoms that contain one or more unpaired electrons. Free radicals are believed to be a cause of ageing, heart disease, and some cancers.

1. Protein helps repair cells that have suffered free radical damage.
   蛋白质帮助修复被自由基破坏的受损细胞。
2. The high quality high-solids hydroxyl acrylic resins with low viscosity were prepared by free radical polymerization.
   合成的改性物对羟基树脂有极好的相容性，可以与羟基丙烯酸树脂配成涂料。
3. Fluorine-containing polymer-base fatliquoring agent was prepared through free radical copolymerization with maleic anhydride and natural oil.
   通过动、植物油与马来酸酐共聚，然后用十二氟庚醇和高级脂肪醇酯化，合成了含氟聚合物加脂剂。
4. This reaction has been classified as a free radical chain process.
   这种反应是按自由基连锁反应的历程进行分类的。
5. Objective to study the scavenging effect of Cheqiancao on oxygen free radical.
   目的研究车前草对氧自由基的清除作用。
6. Antioxidants are also called free radical scavengers.
   抗氧化剂也被称为自由基的清道夫。
7. The oxygen free radical scavenging activities and anti-lipoprotein oxidative effects of green tea polysaccharides were studied.
   研究绿茶多糖体外清除氧自由基与抗脂蛋白氧化作用。
8. Copper-containing enzymes play important roles in iron and catecholamine metabolism, free radical scavenging, and in the synthesis of hemoglobin, elastin and collagen.
   含铜的酶在铁和儿茶酚胺的代谢、自由基清除、合成血红蛋白、弹性蛋白和胶原蛋白中发挥重要作用。
9. Conclusion Formaldehyde can injury free radical eliminated system to cause lung injury.
   结论：甲醛可损伤小鼠自由基清除系统。
10. Furthermore, the mechanism of free radical scavenging reactions of Magnolol and Honokiol were proposed.
    此外，初步探讨了其自由基清除活性反应机理。
11. The role of oxygen free radical in experimental keratitis a minute hairlike projection on mucous membrane.
    氧自由基在实验性角膜炎中的作用黏膜上起保护作用的细小的毛。
12. The Effect of Dioxin on Expressions of AhR Genes and the Free Radical
    二恶英中毒对AhR基因表达和自由基水平的影响
13. The majority of vinyl monomers can be used for free radical polymerization catalyst.
    乙烯基类单体大多数可以采用游离基型催化剂进行聚合。
14. They also dramatically increase free radical generation in the brain.
    他们还大幅增加自由基的生成在大脑中。
15. Vitamin E is the main body of biological free radical scavenger and antioxidant one.
    维生素E是体内最主要的生物自由基清除剂和抗氧化剂之一。
16. The paper reviewed the modification of chitosan by free radical polymerization and atom transfer radical polymerization ( ATRP), emphasized the application of ATRP on graft copolymerization of chitosan.
    综述了普通自由基聚合和原子转移自由基聚合（ATRP）反应对壳聚糖及其衍生物进行修饰改性的研究现状。着重介绍了ATRP技术在壳聚糖接枝改性方面的应用。
17. Secondary inflammatory reaction and free radical damage existed in the tissue around intracerebral hemorrhage.
    脑出血后血肿周围存在继发炎性反应与自由基损伤。
18. Study on the ability of scavenging free radical of the different extracts from leaves of Eucalyptus
    桉树叶不同提取物对自由基的清除能力研究
19. Free Radical Scavenging Effects of Extracts from Various Parts of Citrus
    柑橘不同部位提取物对羟自由基的清除作用研究
20. Iron and copper increase oxidative stress ( free radical damage), which is a major problem in CFIDS.
    增加铁和铜的氧化应激（自由基损伤），这是一个重大问题在CFIDS。
21. Study on synthesis and scavenging capacity of free radical of hesperidin-zinc complex
    橙皮苷锌配合物合成及清除自由基能力的研究
22. We studied the effect of scavenging hydroxyl free radical by Se-polysaccharide and Se-protein under the best condition of Fenton system.
    结果表明：硒多糖和硒蛋白清除羟自由基的效果比与之相同浓度的无机硒和相同浓度的多糖及蛋白都要明显；
23. OBJECTIVE: To study the effects of anaerobic interval training on free radical metabolism in rats.
    目的：观察无氧间歇训练对大鼠体内自由基代谢的影响。
24. This investigation reveals that carminic acid has certain free radical scavenging activity, thereby providing a food additive.
    结果表明胭脂红酸是一种对自由基具有一定清除活性的食品添加剂。
25. Mitochondria play an important role in energy metabolism, free radical production, aging and cell apoptosis.
    线粒体在能量代谢、自由基产生、衰老、细胞凋亡中起重要作用。
26. They are large molecules that are able to maintain stability even if they are in a free radical form.
    抗氧化剂是很大的分子团，即使是在自由基的状态下它们仍能保持稳定。
27. Abstract: A water dispersed SBS grafted polymer was synthesized by free radical polymerization.
    文摘：采用自由基接枝共聚的方法合成了亲水性SBS接枝丙烯酸共聚物，同时进行了结构表征。
28. Status of free radical and water in ultradried seeds with distinct moisture content were investigated in safflower seed.
    研究了不同超干度的红花种子自由基和水分状态。
29. Objective To investigate the mechanisms of nonenzymatic glycosylation inducing myocardial aging and free radical theory.
    目的以非酶糖基化和自由基学说探讨心肌老化的发生机制。
30. The anti-oxidizing function can prevent the aging of skin caused by free radical.
    具有抗氧化功能，可抵御自由基所造成的肌肤老化。

noun

1. an atom or group of atoms with at least one unpaired electron
   1. in the body free radicals are high-energy particles that ricochet wildly and damage cells

   Synonym:    radical