在"英语"词典里free radical}的意思

在英语中FREE RADICAL的发音

free radical

FREE RADICAL在英语中的意思是什么？

激进（化学）

Radical (chemistry)

在化学中，自由基是具有不配对的价电子或开放电子壳的原子，分子或离子，因此可被视为具有一个或多个“悬空”共价键。 除了一些例外，这些“悬挂”键使自由基对其他物质甚至对自身具有高度化学反应性：如果它们彼此接触，它们的分子通常会自发地二聚或聚合。 大多数自由基在非常低的浓度下在惰性介质或真空中是相当稳定的。 自由基的一个显着的例子是羟基自由基，这是一个分子，它是一个比水分子短的氢原子，因此有一个键与氧“悬挂”。 另外两个实例是卡宾分子，其具有两个悬挂键; 和超氧阴离子，氧分子O 2与一个额外的电子，具有一个悬挂键。 另一方面，羟基阴离子，氧化物阴离子和碳鎓阳离子不是自由基，因为可能看起来是悬挂的键实际上通过加入或除去电子来分解。

In chemistry, a radical is an atom, molecule, or ion that has unpaired valence electrons or an open electron shell, and therefore may be seen as having one or more "dangling" covalent bonds. With some exceptions, these "dangling" bonds make free radicals highly chemically reactive towards other substances, or even towards themselves: their molecules will often spontaneously dimerize or polymerize if they come in contact with each other. Most radicals are reasonably stable only at very low concentrations in inert media or in a vacuum. A notable example of a free radical is the hydroxyl radical, a molecule that is one hydrogen atom short of a water molecule and thus has one bond "dangling" from the oxygen. Two other examples are the carbene molecule, which has two dangling bonds; and the superoxide anion, the oxygen molecule O 2 with one extra electron, which has one dangling bond. On the other hand, the hydroxyl anion, the oxide anion and the carbenium cation are not radicals, since the bonds that may appear to be dangling are in fact resolved by the addition or removal of electrons.

FREE RADICAL的翻译

通过我们的英语多语言翻译器,找到free radical的25种语言翻译

该章节所呈现的将free radical由 英语向其他语言的翻译是通过自动统计翻译获得的；在英语中基本的翻译单位是单词«free radical»。

• 翻译者英语 - 中文: 自由基
• 翻译者英语 - 西班牙语: radicales libres
• 英语: free radical
• 翻译者英语 - 印地语: कट्टरपंथी मुक्त
• 翻译者英语 - 阿拉伯语: الجذور الحرة
• 翻译者英语 - 俄语: свободный радикал
• 翻译者英语 - 葡萄牙语: radical livre
• 翻译者英语 - 孟加拉语: ভিত্তিগত বিনামূল্যে
• 翻译者英语 - 法语: de radicaux libres
• 翻译者英语 - 马来语: Radikal bebas
• 翻译者英语 - 德语: Radikal
• 翻译者英语 - 日语: 遊離基
• 翻译者英语 - 韩语: 자유 라디칼
• 翻译者英语 - 印尼爪哇语: Radikal bebas
• 翻译者英语 - 越南语: gốc tự do
• 翻译者英语 - 泰米尔语: இலவச தீவிரம்
• 翻译者英语 - 马拉地语: मुक्त मूलगामी
• 翻译者英语 - 土耳其语: serbest radikal
• 翻译者英语 - 意大利语: radicale libero
• 翻译者英语 - 波兰语: wolnych rodników
• 翻译者英语 - 乌克兰语: вільний радикал
• 翻译者英语 - 罗马尼亚语: radicali liberi
• 翻译者英语 - 希腊语: ελεύθερων ριζών
• 翻译者英语 - 布尔语(南非荷兰语): vrye radikale
• 翻译者英语 - 瑞典语: fri radikal
• 翻译者英语 - 挪威语: frie radikaler

与 «FREE RADICAL»相关的英语书籍

在以下的参考文献中发现free radical的用法。与free radical相关的书籍以及同一来源的简短摘要提供其在 英语文献中的使用情境。

Free Radical Damage and its Control

This book provides a comprehensive treatise on the chemical and biochemical consequences of damaging free radical reactions, the implications for the pathogenesis of disease and how this might be controlled endogenously and by radical ...

C.A. Rice-Evans, R.H. Burdon, 1994

Free Radical Toxicology

The book focuses on target organ toxicity, and the concluding section offers an overview of the evidence implicating free radicals in the aetiology of various chemical toxicities, challenging the possibility of misguided use of biomarkers ...

Kendall B Wallace, 1997

Techniques in Free Radical Research

Techniques in Free Radical Research assembles and critically assesses the most relevant and reliable experimental approaches used towards the measurement of radicals and radical-mediated damage in chemical systems, in cells and in tissues ...

A.T. Diplock, M.C.R. Symons, C.A. Rice-Evans, 1991

Handbook of Free Radical Initiators

The Handbook of Free Radical Initiators presents an up-to-date account of the physicochemical data on radical initiators and reactions of radical generation.

E. T. Denisov, T. G. Denisova, T. S. Pokidova, 2005

Free Radical

In 2001, Tony Benn, one of the most influential socialist politicians in Europe, retired from the British House of Commons after almost 50 years in politics, to 'devote more time to politics'.

Tony Benn, 2004

Free-Radical-Induced DNA Damage and Its Repair: A Chemical ...

Both chemists and molecular biologists will find this an invaluable reference work for the study of free radical induced DNA damage and its repair.

Clemens Sonntag, 2006

Advanced Free Radical Reactions for Organic Synthesis

The book usefully provides experimental details for the most important reactions as well as numerous references to the original literature.

Hideo Togo, 2004

Immunopharmacology of Free Radical Species

This volume deals with various basic mechanisms of free radical processes and injury. The emphasis in each case is on potential therapeutic strategies developing fromthis new knowledge.

‎1995

Handbook of Radical Polymerization

Chapters written by internationally acclaimed experts in their respective fields include: * Theory of Radical Reactions * The Kinetics of Free Radical Polymerization * Industrial Applications and Processes * Nitroxide Mediated Living ...

Krzysztof Matyjaszewski, Thomas P. Davis, 2002

Free-Radical Retrograde-Precipitation Polymerization ...

The book pertains to unique phenomenological features of a potentially runaway polymerization reaction process that is apparently brought under control through a mass and energy confining mechanism.

Gerard Caneba, 2010

包含词语«FREE RADICAL»的新条目

找出国内和国际出版社所讨论的内容，以及词语free radical在以下新条目的上下文中是如何使用的。

10 Reasons to Love the Herb St. John's Wort

Because free radical damage is involved in aging and many diseases, these findings suggest that St. John's Wort may have many other ... «Care2.com, 七月 15»

Health: Nutrients to reduce heart disease risk

While there is debate whether homocysteine is a primary or a supporting risk factor we know that homocysteine increases free radical activity in ... «New Zealand Herald, 七月 15»

Natural News: Wisdom of Nature Welcomes BritEyes

... integrity of blood vessels, promote healthy circulation and even help to prevent free radical damage to the delicate structures within the eyes. «PR.com, 七月 15»

We all get sunburned - here's how to deal with it

"Exposure to the sun's rays can increase free radical damage, contributing to the breakdown of collagen and elastin (the structures that keep ... «Business Insider, 七月 15»

The New Superfruit You've Never Heard of But Need to Try

One in particular, chlorogenic acid, is one of the most potent free radical scavengers found in plant tissues. Serving size: one cup cooked ... «TIME, 七月 15»

Mukti Antioxidant Facial Serum

Strengthens capillaries and reduces free radical damage, protecting the skin from breakdown and aging." Wild Roselia (Hibiscus) extract: ... «Truth In Aging, 七月 15»

Therapeutic benefit of melatonin in refractory central serous …

Protective effects of melatonin in experimental free radical-related ocular diseases. J Pineal Res 2006; 40: 101–109. | Article | PubMed |; Alio JL ... «Nature.com, 七月 15»

Dr. Jen's surprising news about sunscreen

You put sunscreen on, to avoid free radical generation from the sun. But if you're putting chemical sunscreens on, you're actually doubling up ... «KING5.com, 七月 15»

MitoQ Protects Donor Transplant Hearts From Damage During Storage

Researchers have found that the reperfusion of blood into an ischemic heart can lead to free radical production in the mitochondria. «Cardiovascular Disease News, 七月 15»

Healing, stress reducing, immune-boosting power of tea

These polyphenols are antioxidants, and protect the body's cells from free radical damage, help prevent premature blood clotting, and boost the ... «Tryon Daily Bulletin, 七月 15»