| radiographer |
means any individual who performs or who, in attendance at the site where the sealed source or sources are being used, personally supervises industrial radiographic operations and who is responsible to the licensee for assuring compliance with the requirements of the Commission's regulations and the conditions of the license.
출처: www.nrc.gov/reading-rm/doc-collections/cfr/part034...
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| radiography |
means an examination of the structure of materials by nondestructive methods, utilizing ionizing radiation to make radiographic images.
출처: www.nrc.gov/reading-rm/doc-collections/cfr/part034...
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| radio frequency |
An alternatingAC current or voltage having a frequency above about 100kHz, so-called because these frequencies are radiated as electro-magnetic waves by radio and television, and as high as 30 GHz (30,000 MHz). The constant frequency of the carrier wave (the frequency which you tune into) falls within this range. This is then modulated by the audio (or other) signal, according to some process such as AM or FM.
출처: www.dilettantesdictionary.com/index.php
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| radionuclide ventriculography |
Assessment of cardiac chamber size and performance by intravenous radioisotope injection.
출처: www.iacpr.net/services/glossary_terms.php
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| radioactivity |
The spontaneous emission of radiation from the nucleus of an atom. Radionuclides lose particles and energy through this process.
출처: www.eia.doe.gov/cneaf/nuclear/page/umtra/glossary....
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