See Also: uranium-234-uranium-238 dating(encyclopedia)
Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
uranium(encyclopedia)
uranium(dictionary)
Uranium(medicine)
uranium(dictionary)
uranium compounds(medicine)
uranium nephritis(medicine)
International Uranium(finance)
uranium-thorium-lead dating(encyclopedia)

McDonald's manoeuvre (medicine) and uranium (sh)


McDonald's manoeuvre (medicine)


McDonald's manoeuvre
Measurement of uterus from the upper border of the symphysis to a line tangential to the fundus over the abdomen with a tape to determine the height of the uterus; each centimeter approximately corresponds to the gestational age in weeks.


uranium (sh)




Chemical element of the actinide series (with many transition element properties), chemical symbol U, atomic number 92.

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.