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1 half-life
<med.pharm> ■ Halbwertszeit f (HWZ) -
2 half-life period
<med.pharm> ■ Halbwertszeit f (HWZ) -
3 physical half-life
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4 цезий
цезий
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
caesium
A soft silvery-white and highly reactive metal belonging to the alkali group of metals. It is a radiation hazard, because it can occur in two radioactive forms. Caesium-134 is produced in nuclear reactors, not directly by fission, but by the reaction. It emits beta- and gamma-radiation and has a half-life of 2.06 years. Caesium-137 is a fission product of uranium and occurs in the fallout from nuclear weapons. It emits beta- and gamma-rays and has a half-life of 30 years. Caesium-137 was the principal product released into the atmosphere, and hence the food chain, from atmospheric testing of nuclear weapons and from the Windscale fire and Chernobyl nuclear accidents. After the Chernobyl accident, which spread a radiation cloud across Europe, the European Commission proposed new and more restrictive limits on levels of caesium in food and drinking water. (Source: WRIGHT)
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Русско-немецкий словарь нормативно-технической терминологии > цезий
См. также в других словарях:
radioactive half-life — radioactive half life. См. радиоактивный полураспад. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) … Молекулярная биология и генетика. Толковый словарь.
Half-life (disambiguation) — Half life is a mathematical and scientific description of exponential decay.Half life may also refer to: * Biological half life, pertaining to organisms (also refers to elimination half life , a pharmacokinetic parameter in medicine) ** Effective … Wikipedia
Half-life — (h[aum]f l[imac]f ), n. (Physics) the time it takes for one half of a substance decaying in a first order reaction to be destroyed. For radioactive substances, it is the time required for one half of the initial amount of the radioactive isotope… … The Collaborative International Dictionary of English
Half-Life (jeu vidéo) — Half Life Pour les articles homonymes, voir HL et Halflife. Half Life … Wikipédia en Français
Half-Life 1 — Half Life Pour les articles homonymes, voir HL et Halflife. Half Life … Wikipédia en Français
Half-Life Generation — Half Life Pour les articles homonymes, voir HL et Halflife. Half Life … Wikipédia en Français
Half-life — Pour les articles homonymes, voir HL et Halflife. Half Life … Wikipédia en Français
Half Life — Pour les articles homonymes, voir HL et Halflife. Half Life … Wikipédia en Français
Half life — Pour les articles homonymes, voir HL et Halflife. Half Life … Wikipédia en Français
half-life — half lives also half life N COUNT The half life of a radioactive substance is the amount of time that it takes to lose half its radioactivity … English dictionary
half-life — half′ life or half′ life n. pl. lives [[t] ˌlaɪvz[/t]] 1) phs the time required for one half the atoms of a given amount of a radioactive substance to decay 2) pha the time required for the activity of a substance taken into the body to lose one… … From formal English to slang