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uranium    音标拼音: [jɚ'eniəm]
n. 铀

铀

uranium
n 1: a heavy toxic silvery-white radioactive metallic element;
occurs in many isotopes; used for nuclear fuels and nuclear
weapons [synonym: {uranium}, {U}, {atomic number 92}]

Uranium \U*ra"ni*um\, n. [NL., from Uranus the planet. See
{Uranus}.] (Chem.)
An element of the chromium group, found in certain rare
minerals, as pitchblende, uranite, etc., and reduced as a
heavy, hard, nickel-white metal which is quite permanent. 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. Symbol U. Atomic weight 239.
[1913 Webster]

Note: Uranium was discovered in the state of an oxide by
Klaproth in 1789, and so named in honor of Herschel's
discovery of the planet Uranus in 1781.
[1913 Webster] Uran-ocher


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  • What is Uranium? | IAEA
    Uranium is a naturally occurring radioactive element, which has the atomic number of 92 and corresponds to the chemical symbol U in the periodic table It belongs to a special group of elements called “actinides” — elements that were discovered relatively late in history
  • What is Uranium? | IAEA
    Uranium is a naturally occurring radioactive element, which has the atomic number of 92 and corresponds to the chemical symbol U in the periodic table It belongs to a special group of elements called “actinides” — elements that were discovered relatively late in history
  • Les ressources en uranium sont suffisantes, mais des investissements . . .
    Les ressources en uranium sont suffisantes pour permettre à la fois l’utilisation ininterrompue de l’énergie d’origine nucléaire et une expansion importante du secteur jusqu’en 2050 et au-delà Il sera néanmoins primordial d’investir en temps voulu dans de nouvelles techniques de
  • What is Uranium? | IAEA
    Uranium is a naturally occurring radioactive element, which has the atomic number of 92 and corresponds to the chemical symbol U in the periodic table It belongs to a special group of elements called “actinides” — elements that were discovered relatively late in history
  • Uranium production for nuclear reactors | IAEA
    Uranium is the primary fuel for nuclear reactors and must be managed properly, in a safe and sustainable manner Recent annual production of natural uranium world-wide has been between 55,000 and 65,000 tons of uranium metal, similar to the fuel demand Additionally, thorium is also being investigated as a potential alternate source of nuclear
  • What is Uranium? | IAEA
    Uranium is a naturally occurring radioactive element, which has the atomic number of 92 and corresponds to the chemical symbol U in the periodic table It belongs to a special group of elements called “actinides” — elements that were discovered relatively late in history
  • World Distribution of Uranium Deposits - International Atomic Energy Agency
    World Distribution of Uranium Deposits (UDEPO) is a database of uranium deposits in the world UDEPO contains information on the classification, geological characteristics, geographical distribution and technical characteristics of the uranium deposits worldwide
  • What is Nuclear Energy? The Science of Nuclear Power
    What is nuclear fission? Nuclear fission is a reaction where the nucleus of an atom splits into two or more smaller nuclei, while releasing energy For instance, when hit by a neutron, the nucleus of an atom of uranium-235 splits into two smaller nuclei, for example a barium nucleus and a krypton nucleus and two or three neutrons
  • Uranium Extraction Technology | IAEA
    The purpose of this publication is to update and expand the first edition, which was published in 1983, and to report on later advances in uranium ore processing It includes background information about the principles of the unit operations used in uranium ore processing and summarizes the current
  • Depleted uranium: sources, exposure and health effects
    Information is given on sources of depleted uranium exposure, the likely routes of acute and chronic intake, the potential health risks from both the radiological and chemical toxicity standpoints and future research needs Several ways of uptake of compounds with widely different solubility characteristics are also considered





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