4) residence half-life [放射性灰尘从平流层落下的]半落下期,半停留期5) radioactive dust 放射性灰尘6) early fallout 早期放射性落下灰补充资料:放射性碘标记的放射性药物 分子式:CAS号:性质: 131I是最早用于临床的放射性核素之一。临床上常用的碘标放射性药物有:(1)Nal31I,用于甲状腺显像和甲亢治疗...
9 RegisterLog in Sign up with one click: Facebook Twitter Google Share on Facebook radioactive half-life [¦rād·ē·ō′ak·tiv ′haf‚līf] (chemistry) half-life McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc. ...
half-lifeThe consequences of atmospheric releases of radioactivity and, in ; particular, the important nuclides in worldwide fallout and their movement in ; food chains are discussed. The main deposition of worldwide fallout is in rain, ; and concentration of radioactivity in rainwater at a given...
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What is the Half-Life of this thread? I would estimate it to be n = -0.008219 years, so each time a unit of n passes, the amount of posts decay by half. Last edited: Nov 4, 2024 Reactions: woodgoldtwo, Adeleine, realaccountami? and 2 others internet no longer getting paid to...
nontransuranic radioactive isotopes such as niobium-94 (94Nb, an impurity in the stainless steel), which emits highly penetrating gamma rays and has a half-life of 20,000 years. These wastes are unacceptable for shallow-land disposal as low-level wastes. Disposal in a geologic repository is ...
The concepts of radioactivity, half-life and nuclear fission are delivered with poetic ease, and used as metaphors to parallel steps in the protagonists' lives. The result is a linguistically rich and visually captivating portrait of two formidable scientific figures and their extraordinary discoveries...
Twitter Google Share on Facebook radioactive decay Thesaurus Medical Encyclopedia Wikipedia Related to radioactive decay:alpha decay,half life,radioactivity radioactive decay n. 1.Spontaneous disintegration of a radionuclide with the emission of energetic particles or radiation, such as alpha or beta par...
In the case of radioactive material, the half-life is the amount of time necessary for one-half the initial number of radioactive atoms to change or transform into another atom (that is normally not radioactive). From: Encyclopedia of Environmental Health, 2011 ...
The long-term residual radioactivity in the affected areas after the nuclear weapons use and nuclear power plant accidents comes largely from radiocaesium (137Cs, half-life 30.05 years, and 134Cs, half-life 2.06 years) aerosol deposited onto soils (Yasunari et al. 2011). The Chernobyl accident...