| ultrasound |
A procedure in which high-energy sound waves (ultrasound) are bounced off internal tissues or organs and make echoes. The echo patterns are shown on the screen of an ultrasound machine, forming a picture of body tissues called a sonogram. Also called ultrasonography.
출처: www.stjude.org/glossary
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| ultraviolet radiation |
UV radiation. Invisible rays that are part of the energy that comes from the sun. UV radiation also comes from sun lamps and tanning beds. UV radiation can damage the skin and cause melanoma and other types of skin cancer. UV radiation that reaches the Earth's surface is made up of two types of rays, called UVA and UVB rays. UVB rays are more likely than UVA rays to cause sunburn, but UVA rays pass deeper into the skin. ...
출처: www.stjude.org/glossary
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| ultrasonic |
Referring to sound waves with frequencies higher than those at the upper limit of unimpaired human hearing, usually between 16 and 20 KHz.
출처: amsglossary.allenpress.com/glossary/browse
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| ultraviolet |
(Abbreviated UV.) Pertaining to or same as ultraviolet radiation.
출처: amsglossary.allenpress.com/glossary/browse
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| ultraviolet radiation |
(UV) The portion of the electromagnetic spectrum with wavelengths from about 100 to 400 nm; between ionizing radiation (X-rays) and visible light. UV is absorbed by DNA and is highly mutagenic to unicellular organisms and to the epidermal cells of multicellular organisms. UV light is used in tissue culture for its mutagenic and bactericidal properties.
출처: www.fao.org/docrep/003/X3910E/X3910E24.htm
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