Faibles doses d'irradiation — En radiobiologie, les faibles doses d irradiation sont des accumulations de petites irradiations d origine variées, qui se situent à un niveau très faible, largement inférieur à celui où l on commence à voir apparaître un effet déterministe… … Wikipédia en Français
chemical reaction — Any chemical process in which substances are changed into different ones, with different properties, as distinct from changing position or form (phase). Chemical reactions involve the rupture or rearrangement of the bonds holding atoms together… … Universalium
photochemical reaction — Chemical reaction initiated by absorption of energy in the form of visible (light), ultraviolet, or infrared radiation. Primary photochemical processes occur as an immediate result, and secondary processes may follow. The most important example… … Universalium
Transfusion reaction — In medicine, a transfusion reaction is any adverse event which occurs because of a blood transfusion. These events can take the form of an allergic reaction, a transfusion related infection, hemolysis related to an incompatible blood type, or an… … Wikipedia
Post Irradiation Examination — (PIE) is the study of used nuclear materials such as nuclear fuel. It has several purposes. It is known that by examination of used fuel that the failure modes which occur during normal use (and the manner in which the fuel will behave during an… … Wikipedia
Réticulation par irradiation UV — Le séchage par UV, appelé UV curing en anglais, est un domaine spécialisé. Il faut déterminer la puissance, le temps d exposition et surtout le procédé d exposition pour que la méthode fonctionne correctement. Il existe deux types de… … Wikipédia en Français
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
RADIOÉLÉMENTS ET RAYONNEMENTS IONISANTS — Les radioéléments sont des isotopes dont les noyaux sont instables, car ils possèdent un trop plein d’énergie; ils s’en libèrent spontanément, tel un ressort qui se détend, en une ou en plusieurs étapes, pour revenir à un état plus stable, en… … Encyclopédie Universelle
food preservation — Any method by which food is protected against spoilage by oxidation, bacteria, molds, and microorganisms. Traditional methods include dehydration, smoking, salting, controlled fermentation (including pickling), and candying; certain spices have… … Universalium
Nuclear technology — A residential smoke detector is the most familiar piece of nuclear technology for some people Nuclear technology is technology that involves the reactions of atomic nuclei. Among the notable nuclear technologies are nuclear power, nuclear… … Wikipedia
Radiation chemistry — is a subdivision of nuclear chemistry which is the study of the chemical effects of radiation on matter; this is very different from radiochemistry as no radioactivity needs to be present in the material which is being chemically changed by the… … Wikipedia