![]() Beta particles are generally electrons (with negative charge) but may be positrons.īiological shield: A mass of absorbing material (e.g. (In practice, GBq or TBq are the common units).īeta particle: A particle emitted from an atom during radioactive decay. One Bq indicates one disintegration per second and is thus the activity of a quantity of radioactive material which averages one decay per second. Approximately equivalent to the minimum daily load.īecquerel: The SI unit of intrinsic radioactivity in a material. The positive charges on the protons are balanced by a number of negatively-charged electrons in motion around the nucleus.īackground radiation: The naturally-occurring ionising radiation which every person is exposed to, arising from the Earth's crust (including radon) and from cosmic radiation.īase load: That part of electricity demand which is continuous, and does not vary over a 24-hour period. Atoms have a nucleus consisting of positively-charged protons and uncharged neutrons of almost the same mass. Alpha particles are helium nuclei, with 2 protons and 2 neutrons.Ītom: A particle of matter which cannot be broken up by chemical means. ![]() This is the optimisation principle of radiation protection.Īlpha particle: A positively-charged particle emitted from the nucleus of an atom during radioactive decay. Expressed in becquerels.ĪLARA: As Low As Reasonably Achievable, economic and social factors being taken into account. in the steel of a reactor core) which has been created by neutron bombardment.Īctivity: The number of disintegrations per unit time inside a radioactive source. Minor actinides are americium, curium and neptunium.Īctivation product: A radioactive isotope of an element (e.g. They are therefore significant in wastes arising from nuclear fission, e.g. Actinides are radioactive and typically have long half-lives. Usually applied to those above uranium – 93 up (also called transuranics). Index A B C D E F G H I L M N O P R S T U V W Y ZĪctinide: An element with atomic number of 89 (actinium) to 103. 38, W138-W143 (2010).The following is a list of terms commonly used in discussion of nuclear energy. PathPred: an enzyme-catalyzed metabolic pathway prediction server. ![]() Moriya, Y., Shigemizu, D., Hattori, M., Tokimatsu, T., Kotera, M., Goto, S., and Kanehisa, M.Systematic analysis of enzyme-catalyzed reaction patterns and prediction of microbial biodegradation pathways. Oh, M., Yamada, T., Hattori, M., Goto, S., and Kanehisa, M.E-zyme: predicting potential EC numbers from the chemical transformation pattern of substrate-product pairs. Yamanishi, Y., Hattori, M., Kotera, M., Goto, S., and Kanehisa, M.Modular architecture of metabolic pathways revealed by conserved sequences of reactions. Muto, A., Kotera, M., Tokimatsu, T., Nakagawa, Z., Goto, S., and Kanehisa, M.Computational assignment of the EC numbers for genomic-scale analysis of enzymatic reactions. Kotera, M., Okuno, Y., Hattori, M., Goto, S., and Kanehisa, M.Development of a chemical structure comparison method for integrated analysis of chemical and genomic information in the metabolic pathways. Hattori, M., Okuno, Y., Goto, S., and Kanehisa, M.PathPred: prediction of biodegradation/biosynthetic pathways.E-zyme: automatic assignment of EC numbersįurthermore, based on the observation that specific RDM patterns are uniquely or preferentially found in specific categories of KEGG metabolic pathways, the following tool was developed for predicting metabolic fate of a given chemical compound.The RDM patterns are the basis for predicting reaction types given a pair (or pairs) of chemical compound structures as implemented in the following tool. PathSearch: search for similar reaction pathways.For any sequence of reactions or reaction classes, the following tools may be used to search similar reaction sequences.
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