| alpha-fetoprotein |
High levels of this protein in the mother's blood or amniotic sac. Often associated with a neural tube defect.
출처: www.azspinabifida.org/gloss.html
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|---|---|
| alpha particle |
A radioactive particle equivalent to a helium nucleus (2 protons, 2 neutrons)
출처: misterguch.brinkster.net/vocabulary.html
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| alpha particle |
A helium nucleus made up of two neutrons and two protons. An alpha particle can be stopped in a piece of paper a few microns thick. It produces substantially more ions than an x ray or gamma ray or an electron and, therefore, the potential for cellular damage is greater.
출처: www.hc-sc.gc.ca/hecs-sesc/ccrpb/publication/safety...
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| alpha particle |
A 4 He nucleus. It is made up of two neutrons and two protons. It is the least penetrating of the three common forms of radiation, being stopped by a thin sheet of paper. It is not dangerous to living things unless the alpha-emitting substance is inhaled or ingested or comes into contact with the lens of the eye.
출처: www.lbl.gov/abc/wallchart/glossary/glossary.html
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| alpha ray |
A 4 He nucleus. It is made up of two neutrons and two protons. It is the least penetrating of the three common forms of radiation, being stopped by a thin sheet of paper. It is not dangerous to living things unless the alpha-emitting substance is inhaled or ingested or comes into contact with the lens of the eye.
출처: www.lbl.gov/abc/wallchart/glossary/glossary.html
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