Free radicals play an important role in a number of biological processes, some of which are necessary for life, such as the intracellular killing of bacteria by neutrophil/ granulocytes. Free radicals have also been implicated in certain cell signalling processes. The two most important oxygen-centered free radicals are superoxide and hydroxyl radical. They are derived from molecular oxygen under reducing conditions. However, because of their reactivity, these same free radicals can participate in unwanted side reactions resulting in cell da ...

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Radical chemistry, Radical chemistry - Depicting radicals in chemical reactions, Radical chemistry - The chemistry of radicals, Radical chemistry - Terminology, Radical chemistry - Formation, Radical chemistry - Persistence and stability, Radical chemistry - Combustion, Radical chemistry - Polymerization, Radical chemistry - Atmospheric radicals, Radical chemistry - Free radicals in biology, Radical chemistry - Diagnostics, Radical chemistry - External link

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Radical chemistry, Radical chemistry - Depicting radicals in chemical reactions, Radical chemistry - The chemistry of radicals, Radical chemistry - Terminology, Radical chemistry - Formation, Radical chemistry - Persistence and stability, Radical chemistry - Combustion, Radical chemistry - Polymerization, Radical chemistry - Atmospheric radicals, Radical chemistry - Free radicals in biology, Radical chemistry - Diagnostics, Radical chemistry - External link

Read more here: » Radical chemistry: Encyclopedia II - Radical chemistry - Free radicals in biology

One of the underlying concepts that guided Harman to his theory of aging was the involvement of free radicals in disease. Free radical damage within cells, and subsequent damage has been linked to a range of disorders including cancer, arthritis, atherosclerosis, Alzheimer's disease, and diabetes. this involvment is not at all surprising as free radical damage is an important aspect of phagocytosis, inflammation, and apoptosis. Cell suicide, or apoptosis, is the body's way of controlling cell death and involves free radicals and redox signalling. Redox factors play an even greater part in o ...

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Free-radical theory, Free-radical theory - Theory of disease, Free-radical theory - Evidence, Free-radical theory - Antioxidant therapy, Free-radical theory - Calorie restriction

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Can we choose to be joyful, free of fear and worry? Can we remain unaffected by circumstances? And what about letting go of deeply inflicted hurt and pain? Would that not mean cheaply letting off the hook someone who deserves to be punished? Can we choose our emotional states?

Emotional Freedom Techniques (EFT), a radical and quick-acting proclaims that Òall negative emotions are caused by a disruption in the bodyÕs energy systemÓ. If this disruption is removed, the physical or emotional pain magically disappears.

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The theory implies that antioxidants (e.g. Vitamin A, vitamin C, and vitamin E) — which prevent free radicals from oxidizing sensitive biological molecules, or reduce the formation of free radicals — will slow the aging process and prevent disease. The antioxidant chemicals found in many food-stuffs (such as the well known vitamins A, C and E) are frequently cited as the basis of claims for the benefits of a high intake of vegetables and fruits in the diet. In particular, antioxidant therapy forms the basis of many basic pharmacol ...

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Free-radical theory, Free-radical theory - Theory of disease, Free-radical theory - Evidence, Free-radical theory - Antioxidant therapy, Free-radical theory - Calorie restriction

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Radical chemistry - Terminology. In chemistry free radicals take part in radical addition and radical substitution as reactive intermediates. Reactions involving free radicals are usually divided into three categories: initiation, propagation, and termination. Initiation reactions are those which result in a net increase in the number of free radicals. They may involve the formation of free radicals from stable species as in Reaction 1 above or they may involve reactions o ...

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Radical chemistry, Radical chemistry - Depicting radicals in chemical reactions, Radical chemistry - The chemistry of radicals, Radical chemistry - Terminology, Radical chemistry - Formation, Radical chemistry - Persistence and stability, Radical chemistry - Combustion, Radical chemistry - Polymerization, Radical chemistry - Atmospheric radicals, Radical chemistry - Free radicals in biology, Radical chemistry - Diagnostics, Radical chemistry - External link

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An Alkyl is a univalent radical containing only carbon and hydrogen atoms arranged in a chain. The alkyls form a homologous series with the general formula CnH2n+1. Examples include methyl, CH3· (derived from methane) and butyl C4H9· (derived from butane). They are normally not found on their own but are found as part of larger branched chain organic molecules. On their own they are free radicals and therefore extremely reactive.

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An antioxidant is a chemical that prevents the oxidation of other chemicals. In biological systems, the normal processes of oxidation (plus a minor contribution from ionizing radiation) produce highly reactive free radicals. These can readily react with and damage other molecules: in some cases the body uses this to fight infection. In other cases, the damage may be to the body's own cells. The presence of extremely easily oxidisable compounds in the system can "mop up" free radi ...

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Antioxidant - Types of antioxidants Antioxidant - Commercial antioxidants Antioxidant - Antioxidants in fuels

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In written chemical equations, free radicals are frequently denoted by a dot placed immediately to the right of the atomic symbol or molecular formula as follows: Cl2 + hν → 2 Cl· Radical reaction mechanisms use ...

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Radical chemistry, Radical chemistry - Depicting radicals in chemical reactions, Radical chemistry - The chemistry of radicals, Radical chemistry - Terminology, Radical chemistry - Formation, Radical chemistry - Persistence and stability, Radical chemistry - Combustion, Radical chemistry - Polymerization, Radical chemistry - Atmospheric radicals, Radical chemistry - Free radicals in biology, Radical chemistry - Diagnostics, Radical chemistry - External link

Read more here: » Radical chemistry: Encyclopedia II - Radical chemistry - Depicting radicals in chemical reactions

BHT is the common abbreviation for butylated hydroxytoluene. BHT is a fat-soluble organic compound primarily used as an antioxidant food additive (E number E321). It also used as an antioxidant in cosmetics, pharmaceutical drugs, jet fuels, rubber and petroleum products, and embalming fluid. BHT is produced by the reaction of p-cresol with isobutylene. It was patented in 1947 and received approval of the Food and Drug Administration for use as a food additive and preservative in 1954. BHT reacts with free radicals, slowing the rate of autoxidation in food, preventing cha ...

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BHT - Controversy

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A name attributed to a group of radical free thinkers emerging from Hindu College, Kolkata in the early 19th century. They were also known as Derozians, after their firebrand teacher at Hindu College, Henry Louis Vivian Derozio. See also. Banglapedia Article ...

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Oligomeric proanthocyanidins or OPCs are a class of flavonoid complexes found in grape seeds and skin, that act as antioxidants (free radical scavengers) in the human body. Thus, OPCs may help protect against the effects of internal and environmental stresses (that is, cigarette smoking, pollution, and supporting normal body metabolic processes). The effects are; depressing blood fat, emolliating blood vessels, lowering blood pressure, preventing blood vessel scleroses, dropping blood visc ...

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The American Aging Association (AGE) is a non-profit, tax-exempt biogerontology organization of scientists and laypeople dedicated to biomedical aging studies intended to slow the aging process. The abbreviation AGE is intended to be representative of the organization, even though it is not an acronym. American aging association - History and Organization. AGE was founded in 1970 by Denham Harman, MD,PhD, who is often known as the "father" of the "Free-Radical Theory of Aging". Dr. Harman was Executi ...

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American aging association - History and Organization American aging association - Activities

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Air was a jazz trio founded in 1971 by saxophone player Henry Threadgill, double bassist Fred Hopkins and drummer Steve McCall. They combined radical free imrpovisation while retaing a strong sense of tune and equal emphasis on each instrument in the group. They began when Threadgill was asked by Columbia College in Chicago, Illinois to arrange a number of Scott Joplin songs. Joplin was so strongly associated with piano that the musicians enjoyed the challenge of performing his trademark songs without piano. They opted to p ...

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Liberalism and radicalism in Hungary - Opposition. 1847: Liberal oppositionals, like Ferenc Deák and Lajos Kossuth formed the Opposition (Ellenzék). 1849: The party is banned Liberalism and radicalism in Hungary - Radical Party. 1849: Radical liberals formed the illegal Radical Party (Radical Pá ...

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Liberalism and radicalism in Hungary, Liberalism and radicalism in Hungary - Introduction, Liberalism and radicalism in Hungary - The timeline, Liberalism and radicalism in Hungary - Opposition, Liberalism and radicalism in Hungary - Radical Party, Liberalism and radicalism in Hungary - From Adress Party to Liberal Party, Liberalism and radicalism in Hungary - From Extreme Left to Kossuth Party, Liberalism and radicalism in Hungary - Independence Party, Liberalism and radicalism in Hungary - From Independent Liberal Party to National Party, Liberalism and radicalism in Hungary - From Communal Democratic Party to Civic Democratic Party, Liberalism and radicalism in Hungary - Left Party, Liberalism and radicalism in Hungary - Countrywide Republican Party, Liberalism and radicalism in Hungary - Independence and 1948 Károlyi Party, Liberalism and radicalism in Hungary - Countrywide Civic Radical Party, Liberalism and radicalism in Hungary - Liberal Citizens'Party, Liberalism and radicalism in Hungary - From Independence Party of Smallholders Agrarian Workers and Citizens to Civic Freedom Party, Liberalism and radicalism in Hungary - Alliance of Free Democrats, Liberalism and radicalism in Hungary - Liberal leaders

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Behaviorism or behaviourism (not to be confused with behavioralism in political science) is an approach to psychology based on the proposition that behavior can be researched scientifically without recourse to inner mental states. It is a form of materialism, denying any independent significance for the mind. Its significance for psychological treatment has been profound, making it one of the pillars of pharmacological therapy. One of the assumptions of behaviorist thought is that free will is illusory, and that all behaviour is determined by a combination of forces comprised of genetic factors and the environ ...

Including:

Behaviorism - Approaches Behaviorism - Versions
Behaviorism - J. B. Watson Behaviorism - Methodological behaviorism
Behaviorism - B.F. Skinner and radical behaviorism
Behaviorism - Definition Behaviorism - Experimental and conceptual innovations Behaviorism - Relation to language
Behaviorism - Molar versus molecular behaviorism Behaviorism - Behaviorism in philosophy Behaviorism - Behaviorists Behaviorism - References and further reading

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From the starting of liberalism in Hungary its program is combined with the strive for independence from of more autonomy inside Austria Hungary. The two currentis, Deákists and Kossuthists, differ in their attitude towards the Austrian rulers. Both currents are in the beginning of the 20th century conservative liberal or even conservative parties. In the interbellum liberalism is originally very successful with the Károlyi-ans, but after the communist revolution of 1919 and during the conservative regency, liberalism is limited to ...

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Liberalism and radicalism in Hungary, Liberalism and radicalism in Hungary - Introduction, Liberalism and radicalism in Hungary - The timeline, Liberalism and radicalism in Hungary - Opposition, Liberalism and radicalism in Hungary - Radical Party, Liberalism and radicalism in Hungary - From Adress Party to Liberal Party, Liberalism and radicalism in Hungary - From Extreme Left to Kossuth Party, Liberalism and radicalism in Hungary - Independence Party, Liberalism and radicalism in Hungary - From Independent Liberal Party to National Party, Liberalism and radicalism in Hungary - From Communal Democratic Party to Civic Democratic Party, Liberalism and radicalism in Hungary - Left Party, Liberalism and radicalism in Hungary - Countrywide Republican Party, Liberalism and radicalism in Hungary - Independence and 1948 Károlyi Party, Liberalism and radicalism in Hungary - Countrywide Civic Radical Party, Liberalism and radicalism in Hungary - Liberal Citizens'Party, Liberalism and radicalism in Hungary - From Independence Party of Smallholders Agrarian Workers and Citizens to Civic Freedom Party, Liberalism and radicalism in Hungary - Alliance of Free Democrats, Liberalism and radicalism in Hungary - Liberal leaders

Read more here: » Liberalism and radicalism in Hungary: Encyclopedia II - Liberalism and radicalism in Hungary - Introduction

In biological systems, the normal processes of oxidation (plus a minor contribution from ionizing radiation) produce highly reactive free radicals. These can readily react with and damage other molecules. In some cases the body uses free radicals to destroy foreign or unwanted objects, such as in an infection. However, in the wrong place, the body's own cells may become damaged. Should the damage occur to DNA, the result could be cancer. Antioxidants decrease the damage done to cell ...

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Antioxidant, Antioxidant - Antioxidants in biology, Antioxidant - Nutritional antioxidants, Antioxidant - Antioxidants in fuels

Read more here: » Antioxidant: Encyclopedia II - Antioxidant - Antioxidants in biology

Carotene - α-carotene. Carotene - β-carotene. β-carotene can be found in yellow, orange, and green leafy fruits and vegetables. These can be carrots, spinach, lettuce, tomatoes, sweet potatoes, broccoli, cantaloupe, orange, and winter squash. As a rule of thumb, the greater the intensity of the color of the fruit or vegetable, the more beta-carotene it contains. β-carotene is an anti-oxidant and such can be useful for curbing the excess of damaging free radicals in the body ...

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Carotene, Carotene - Carotenemia, Carotene - The two forms, Carotene - α-carotene, Carotene - β-carotene, Carotene - Carotenoids, Carotene - Production, Carotene - Nomenclature

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Azelaic acid is: Antibacterial: it reduces the growth of bacteria in the follicle (Proprionibacterium acnes and Staphylococcus epidermidis); Keratolytic & comedolytic: it returns to normal, the disordered growth of the skin cells, lining the follicle; and Scavenger of free radicals: it reduces inflammation. Reduces pigmentation: it is particularly useful for darker-skinned patients, who have melasma, or whose acne spots leave persistent brown marks; Non-toxic, and ...

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Azelaic acid, Azelaic acid - Properties, Azelaic acid - Uses of azelaic acid, Azelaic acid - Acne treatment, Azelaic acid - Hair loss

Read more here: » Azelaic acid: Encyclopedia II - Azelaic acid - Properties