See Also: alpha-hydroxymethyl-alpha'-(N-acetylaminomethylene)succinic acid hydrolase(medicine)
15-hydroxy-11 alpha,9 alpha-(epoxymethano)prosta-5,13-dienoic acid(medicine)
5 beta-cholestane-3 alpha,7 alpha-diol 26-hydroxylase(medicine)
alpha-dextrin endo-1,6-alpha-glucosidase(medicine)
7 alpha-hydroxy-4-cholesten-3-one-12 alpha monooxygenase(medicine)
CMP-acetylneuraminate-alpha-N-acetylneuramide alpha-2,8-sialyltransferase(medicine)
cholesterol-5 alpha,6 alpha-epoxide hydrase(medicine)
NAD 3 alpha-hydroxy-5 alpha-pregnan-20-one-oxidoreductase(medicine)
5 alpha-dihydroprogesterone 3 alpha-hydroxysteroid oxidoreductase(medicine)
CMP-N-acetylneuraminate-alpha-N-acetylgalactosaminide alpha-2,6-sialyltransferase(medicine)

alpha decay (sh) and pug(1) (iou)


alpha decay (sh)




Type of radioactive disintegration (see radioactivity) in which some unstable atomic nuclei dissipate excess energy by spontaneously ejecting an alpha particle.

Alpha particles have two positive charges and a mass of four atomic mass units; they are identical to helium nuclei. Though they are emitted at speeds about one-tenth that of light, they are not very penetrating and have ranges in air of about 1-4 in. (2.5-10 cm). Alpha decay commonly occurs in elements with atomic numbers greater than 83 (bismuth), but can occur in some rare-earth elements in the atomic-number range of 60 (neodymium) to 71 (lutetium). Alpha decay half-lives range from about a microsecond (10-6 second) to billions of years (1017 seconds).


pug(1) (iou)



pug noun1. Now dial. LME.
[Origin unkn.]
The chaff of wheat, oats, small seeds, etc.; the refuse corn separated in winnowing.