| alpha radiation |
The most energetic but least penetrating form of radiation. It can be stopped by a sheet of paper and cannot penetrate human skin. However, if an alpha-emitting isotope is inhaled or ingested, it will cause highly concentrated local damage.
출처: www.lrb.usace.army.mil/fusrap/glossary-ab.htm
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| alpha particle |
A particle consisting of two protons and two neutrons which has a double positive charge and a mass four times that of a proton. This is not the same as an alpha emitting particle - which is a lump of one of the elements (eg Plutonium and Uranium) which release alpha particles when atoms of that element undergo radioactive decay. A half micron particle of Uranium would be about 5000 times the diameter of an alpha particle. ...
출처: www.llrc.org/jargonbuster.htm
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| alpha radiation |
Radiation consisting of helium nuclei (atomic wt. 4, atomic number 2) that are discharged by radioactive disintegration of some heavy elements, including uranium-238, radium-226, and plutonium-239.
출처: www.ieer.org/clssroom/glossary.html
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| alpha particle |
A specific particle ejected from a radioactive atom. It has low penetrating power and short range. Alpha particles will generally fail to penetrate the skin. Alpha-emitting atoms can cause health effects if introduced into the lungs or wounds.
출처: www.orau.gov/reacts/definitions.htm
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| alprazolam |
generic name: alprazolam BRAND name: XANAX DRUG CLASS AND MECHANISM: Alprazolam is a member of the benzodiazepine family. Benzodiazepines are sedatives that cause dose-related depression of the More Detail Info ...
출처: www.medicineonline.com/Default.asp
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