uranium.

Английский Язык - Турецкий язык

Определение uranium. в Английский Язык Турецкий язык словарь: {i} uranyum; (Nükleer Bilimler) (u) uranyum; (Tıp) U sembolü ile bilinen, atom no: 92 ve atomağırlığı 238.07 olan kimyasal element, uranyum; (isim) uranyum; i., kim. uranyum

Английский Язык - Английский Язык

Определение uranium. в Английский Язык Английский Язык словарь: urano-; The element with atomic number 92 and symbol U; (Kimya) The chemical element of atomic number 92, a grey dense radioactive metal used as a fuel in nuclear reactors. (Symbol: U); A mildly radioactive element with two isotopes which are fissile (U-235 and U-233) and two which are fertile (U-238 and U-234) Uranium is the basic fuel of nuclear energy; the heaviest naturally occurring (metal) element in the earth's crust, exists as three isotopes in the following percentages by weight: U-238, 99 283%; U-234, 0 711%; and U-235, 0 0054%; by radioactivity: U-238, 48%; U-234, 50%; and U-235, 2%; U-235 is the only fissile isotope (capable of sustaining a nuclear chain reaction), i e it is the uranium "bomb material" and nuclear reactor fuel isotope; A chemical element, U, that has an atomic number 92 It reactive with nearly all nonmetals and is used as fuel for nuclear reactors; Hard, grey radioactive metal; and reduced as a heavy, hard, nickel-white metal which is quite permanent; Uranium is a naturally occurring radioactive metal that is used to produce nuclear energy and weapons. a heavy white metal that is radioactive and is used to produce nuclear power and nuclear weapons. It is a chemical element : symbol U (Uranus; because the substance was discovered soon after the planet). Chemical element of the actinide series (with many transition element properties), chemical symbol U, atomic number; A heavy, naturally radioactive, metallic element of atomic number 92 Its two principally occurring isotopes are uranium-235 and uranium-238 Uranium-235 is indispensable to the nuclear industry because it is the only isotope existing in nature to any appreciable extent that is fissionable by thermal neutrons Uranium-238 is also important, because it absorbs neutrons to produce a radioactive isotope that subsequently decays to plutonium-239, an isotope that also is fissionable by thermal neutrons; The heaviest naturally occurring trace element and also a naturally occurring radioactive element which spontaneously "decays" into lighter elements Uranium was originally mined for use as the principal component of atomic bombs Since about 1971, it has been mined exclusively for use as fuel in nuclear power reactors; A naturally radioactive and very dense element Mine Uranium contains 0 7 percent of the isotope Uranium-235, needed for fission Uranium-235 is the principal nuclear fuel material used in today's nuclear power reactors; The basic material for nuclear technology, it is a slightly radioactive, naturally occurring heavy metal that is more dense than lead; A natural and commonly occurring radioactive element which is a mixture of three isotopes; U-234, U-235, and U-238 By weight, natural uranium is about 0 01% U-234, 0 072% U-235, and 99 27% U-238; A heavy silvery-white metallic element, highly radioactive and easily oxidized Of the 14 known isotopes of uranium, 238U is the most abundant in nature; A naturally-occurring element found in some 160 minerals, including phosphate rock; A mildly radioactive element with two isotopes which are fissile (U-235 and U-233) and two which are fertile (U-238 and U-234) Uranium is the basic raw material of nuclear energy; A radioactive element with the atomic number 92 and, as found in natural ores, an average atomic weight of 238 The two principal natural isotopes are uranium-235 (0 7 percent of natural uranium), which is fissionable, and uranium-238 (99 3 percent of natural uranium), which is fertile uranium-233 - A fissionable isotope bred in fertile thorium-232 Like plutonium-239 it is theoretically an excellent material for nuclear weapons, but is not known to have been used for this purpose Can be used as reactor fuel uranium-235 - The only naturally occurring fissionable isotope Natural uranium contains 0 7 percent U-235, light- water reactors use about 3 percent and weapons grade, highly enriched uranium noramlly consists of 93 percent of this isotope uranium-238 - A fertile material Natural uranium is composed of approximately 99 3 percent U-238; A heavy radioactive metal, used chiefly as fuel for nuclear reactors and weapons, but it also has uses in pigments Around 1950, uranium was considered a major factor in United States power and prestige, and did not have nearly the amount of negative connotation it has today; A heavy metal The two principal isotopes of natural uranium are U-235 and U-238 U-235 has the only readily fissionable nucleus which occurs in appreciable quantities in nature, hence its importance as nuclear fuel Only 1 part in 140 of natural uranium is U-235; A silvery, heavy, radioactive, polyvalent metallic element that is found especially in pitchblende and uraninite and exists naturally as a mixture of three isotopes of mass number 234, 235, and 238 in the proportions of 0 006 percent, 0 71 percent, and 99 28 percent, respectively (U, Atomic Number: 92); {i} silvery white radioactive metallic element whose atomic number is 92 used in nuclear reactions and atomic bombs; A heavy element, containing ninety-two protons and varying numbers of neutrons Uranium-235, containing one hundred forty-three neutrons, is used as a fuel in nuclear fission Many forms of uranium are radioactive - WebElements: Uranium; the basic material for nuclear technology It is a slightly radioactive naturally occurring heavy metal that is more dense than lead Uranium is 40 times more common than silver (BEMR, June 1996, pg GL-9); Its yellow oxide is used to impart to glass a delicate greenish- yellow tint which is accompanied by a strong fluorescence, and its black oxide is used as a pigment in porcelain painting; An element of the chromium group, found in certain rare minerals, as pitchblende, uranite, etc; A dense, hard, silvery white metal that tarnishes in air, it is isolated from such ores as pitchblende. Until the discovery of the first transuranium element in 1940, uranium was believed to be the heaviest element. Radioactivity was discovered in uranium by A.-H. Becquerel. All its isotopes are radioactive; several have half-lives long enough to permit determination of the age of the Earth by uranium-thorium-lead dating and uranium-234-uranium-238 dating. Nuclear fission was discovered in 1938 in uranium bombarded with neutrons, and the self-sustaining nuclear chain reaction, the atomic bomb, and the generation of nuclear power followed. Uranium has various valences in compounds, some of which have been used as colours in ceramic glazes, in lightbulb filaments, in photography, and as dyes and mordants; The heaviest naturally occurring element, with an atomic number of 92; a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons; Symbol U; Atomic weight 239; This metal is one of the heaviest of all known elements It was named after the planet Uranus Uranium gives off radioactivity As it loses atomic particles, it decays and ends up, after millions of years, as lead People working with uranium often need protective clothing to shield their bodies from radiation damage Uranium is the fuel used to make nuclear energy in nuclear power plants It is mined in many countries; A radioactive element with two isotopes which are fissile (uranium-235 and uranium-233) and two which are fertile (uranium-238 and uranium-234) Uranium is the basic raw material of nuclear energy; The heaviest element found in nature Approximately 997 out of every 1000 uranium atoms are uranium-238 The remaining 3 atoms are the fissile uranium-235 The uranium-235 atom splits, or fissions, into lighter elements when its nucleus is struck by a neutron One of four primary radionuclides in FUSRAP wastes, including radium-226, radon-222 and thorium-230; A metallic element used in nuclear bombs, with many radioactive and unstable istopes