查询词典 free radical

It is then "a freedom from nature" and "a freedom for values." 3. The "will-contingency" structure of Scotus' theory might then offer the room for free choice of alternative possibilities, a radical indeterminism in the nature of things, a more correct understanding of physical reality, the image of a free, dynamic and creative God, and an evolutive history of humanity as well.

董思高对於「意志－偶然」的结构之提供其它的可能性的自由选择，是一个彻底的、非决定的自然世界；也给予一个物质实相的正确解，同时介绍一位生活与创造的天主之概，他以这样的积极性表达他对人史发展的看法。

Methods: From January 1995 to December 2003, 117 patients with tongue carcinoma were performed with radical surgery, and repaired with platysma flap, sternocleidomastoid myocutaneous flap, pectoral major myocutaneous flap, free forearm flap or free dorsal flap of foot.

对1995年1月至2003年12月间舌癌根治术后即刻修复采用的颈阔肌皮瓣、胸锁乳突肌皮瓣、胸大肌皮瓣、前臂游离皮瓣和足背皮瓣共117例的临床资料进行分析。

To get more insight into the mechanism and kinetics of the RAFT process,it would be helpful to build a small molecular model reaction mimicking the RAFT process but free of a chain-propagation event. We hereby propose a model cross reaction between dithioester and alkoxyamine as a probe of the RAFT process,in which the alkoxyamine plays the role of the radical source.The generating rate of the transient alkyl radical and the nitroxyl radical can be described by the law of persistent radical effect.Thus,the advantage of the model cross reaction is that it affords a radical concentration determined by the known equation of the persistent radical effect.

为了更深入的理解RAFT聚合过程，我们构建了一个模型反应：即由烷氧基胺与双硫酯进行交换反应，烷氧基胺均裂产生的烷基自由基将会向双硫酯进行链转移，双硫酯的引入对纯烷氧基胺分解动力学造成的影响可以提供RAFT过程的许多信息。

Mild hypothermia may enhance liver ability of oxidation-resistance, and reduce the oxygen free radical injury to liver after ischemia-reperfusion.

亚低温能增强肝组织自身抗氧化能力，减轻肝缺血再灌注后氧自由基对肝脏的损伤。

Liver free radical injury may be one of the important mechanisms of hepatic injury induced by biliary obstruction. Tet can protect liver effectively from the injury after biliary obstruction.

自由基损伤可能是胆道梗阻导致肝损害的重要机制之一，Tet对胆道梗阻所致肝损害有明显保护作用。

Abstract］ Objective To evaluate the effects of ulinastatin on proinflammatory cytokines and oxygen free radical during orthotopic liver transplantation.

摘要］ 目的评价蛋白酶抑制剂乌司他丁（ulinary trypsin inhibitor，UTI）对原位肝移植术（orthotopic liver transplantation，OLT）中血浆促炎性细胞因子和氧自由基代谢水平的。

This research utilized the method of organic synthesis, researching different amounts and positions of hydroxy-substituted benzoic acid and serotonin into amide reaction, so as to produce a series of polyhydroxy substituted N-benzoylserotonin derivatives (compound 1-10). Accordingly, this study conducts the following four tests. I. The activity of antioxidant and the experiment of ability to scavenge DPPH free radical, II. The ability of overall antioxidant—the activity of TEAC, III. The activity test of inhibit Tyrosinase, and IV. The study of absorbing UV / VIS Spectrophotometers. This study use trolox, arbutin, and octyl salicylate as the control groups, and to test the ability of anti-oxidation, the activity of inhibit Tyrosinase, and the ability of absorbing UV. This research ultimately intends to investigate the applied value of those compounds into cosmetics.

本研究主要利用有机合成的方法，将不同数量及不同位置的羟基取代苯甲酸化合物与色洛冬宁进行醯胺化反应后，得到一系列的多羟基取代之N-色洛冬宁苯甲醯胺衍生物（化合物1 ~ 10），进行四种不同活性测试方法：一、清除DPPH自由基能力抗氧化活性测试；二、总抗氧化能力活性测试；三、抑制酪胺酸酶活性美白测试；四、紫外线／可见光光谱仪吸收测试，并以水溶性维生素E、熊果素、水杨酸辛酯当作对照组，探讨其抗氧化能力、抑制酪胺酸酶的活性能力与吸收紫外线能力，再进一步探讨其应用於化妆品上的价值。

Learn addition of double bond with various halide, including electrophilic addition and free-radical addition.

了解各种含卤素化合物对碳碳双键的加成，包括亲电加成和自由基加成。

Objective To study the effect of Ginaton on free radical in serum and brain of chronic alcoholism rats.

目的：探讨金钠多对慢性酒精中毒大鼠血及脑组织自由基的影响。

Applications of free radical theory are increasing in biomedicine field.

自由基理论在生物医学领域中的应用越来越多。

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。