Internally deposited

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• Average dose due to natural radioactivity deposited internally — ▪ Table Average dose due to natural radioactivity deposited internally isotope radioactivity in millibecquerel (mBq)* radiation dose in mSv (per year) critical organ carbon 14 2.2(10−7) per kilogram beta rays 0.016 gonads potassium 40 3.9(10−7)… …   Universalium

• radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… …   Universalium

• Alexander Catsch — (Katsch) (1913 ndash; 1976 in Karlsruhe) was a German Russian medical doctor and radiation biologist. Up to the end of World War II, he worked in Nikolaj Vladimirovich Timefeev Resovskij’s Abteilung für Experimentelle Genetik at the Kaiser… …   Wikipedia

• Relative biological effectiveness — (RBE) is a health physics concept introduced in the 1950s, after it was noted that different types of radiation might affect living organisms differently. A higher RBE equates with greater biological damage for equivalent radiation exposure.The… …   Wikipedia

• Radioactive contamination — The radiation warning symbol (trefoil) …   Wikipedia

• Polonium — (] [cite journal author = Momoshima N., Song L.X., Osaki S.,Maeda Y., title = Biologically induced Po emission from fresh water journal =J Environ Radioact. year = 2002 volume = 63 issue = 2 pages = 187–197 doi =10.1016/S0265 931X(02)00028 0]… …   Wikipedia

• Rayonnement ionisant — Pouvoir de pénétration (exposition externe). Le rayonnement alpha (constitué de noyaux d hélium) est simplement arrêté par une feuille de papier. Le rayonnement bêta (constitué d électrons ou de positrons) est arrêté par une plaque d aluminium.… …   Wikipédia en Français

• Computational human phantom — Computational human phantoms are models of the human body used in computerized analysis. Since the 1960s, the radiological science community has developed and applied these models for ionizing radiation dosimetry studies. These models have become …   Wikipedia

• BEIR Committee — Das BEIR Committee, voller Name National Academy of Sciences Advisory Committee on the Biological Effects of Ionizing Radiation ist eine von der US amerikanischen Akademie der Wissenschaften gebildete Arbeitsgruppe aus Medizinern und Physikern,… …   Deutsch Wikipedia

• Europe, history of — Introduction       history of European peoples and cultures from prehistoric times to the present. Europe is a more ambiguous term than most geographic expressions. Its etymology is doubtful, as is the physical extent of the area it designates.… …   Universalium

• Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry       The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …   Universalium