it is necessary to terminate the chain reaction
41fusion reactor — Physics. a reactor for producing atomic energy by nuclear fusion. Cf. reactor (def. 4). * * * Introduction also called fusion power plant or thermonuclear reactor a device to produce electrical power from the energy released in a nuclear… …
42evolution — evolutional, adj. evolutionally, adv. /ev euh looh sheuhn/ or, esp. Brit., /ee veuh /, n. 1. any process of formation or growth; development: the evolution of a language; the evolution of the airplane. 2. a product of such development; something… …
43DNA replication — DNA replication. The double helix is unwound and each strand acts as a template for the next strand. Bases are matched to synthesize the new partner strands. DNA replication is a biological process that occurs in all living organisms and copies… …
44Nuclear program of Iran — See also: Iran and weapons of mass destruction Nuclear program of Iran …
45Avicennism — (PerB|فلسفه سینایی) is a school of early Islamic philosophy which began during the middle of the Islamic Golden Age. The school was founded by Avicenna (Ibn Sina), an 11th century Persian philosopher who attempted to redefine the course of… …
46Bicycle brake — Animation of a single pivot side pull calliper brake for the rear wheel of a steel framed road bike. A bicycle brake is used to slow down or stop a bicycle. There have been various types of brake used throughout history, and several are still in… …
47angiosperm — /an jee euh sperrm /, n. Bot. a plant having its seeds enclosed in an ovary; a flowering plant. Cf. gymnosperm. [ANGIO + SPERM] * * * ▪ plant Introduction any member of the more than 300,000 species of flowering plants (division Anthophyta) …
48Social Protection — ▪ 2006 Introduction With medical costs skyrocketing and government programs scaled back, citizens bore more responsibility for their health care costs; irregular migration, human trafficking, and migrant smuggling posed challenges for… …
49UNITED NATIONS (UN) — UNITED NATIONS (UN), a worldwide organization of states established in 1945, in the wake of World War II, with a view, primarily, to maintain international peace and security and also bring about cooperation among nations in the economic, social …
50Operation Deny Flight — Part of NATO intervention in Bosnia An F 15C is met by maintenance personnel at …
