| radioisotopic culture |
a bacterial culture in a medium containing 1 4 C-labeled carbohydrate. Metabolism is detected by the release of 1 4 CO 2 , offering earlier detection of growth than do conventional methods.
출처: www.merckmedicus.com/pp/us/hcp/thcp_dorlands_conte...
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| radio frequency |
1. (Abbreviated RF.) The number of oscillations per second of the electric and magnetic fields in the radio portion of the electromagnetic spectrum, generally that portion between 10 4 and 10 12 Hz; specifically, the frequency of a given radio carrier wave. 2. In radio or radar, pertaining to a signal at the transmitted or received frequency, as opposed to a signal translated to a different frequency (IF signal) or detected (video signal).
출처: amsglossary.allenpress.com/glossary/browse
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| radiant |
1. Pertaining to the emission or the measurement of electromagnetic radiation. Compare luminous. 2. In describing auroras, a projected point of intersection of lines drawn coincident with auroral streamers, that is, the point from which the aurora seems to originate.
출처: amsglossary.allenpress.com/glossary/browse
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| radiometry |
The technique of measuring radiant energy, especially radiant energy in that portion of the total electromagnetic spectrum lying adjacent to the visible region. Radiometry is to be distinguished from the closely related subject of photometry, the latter being specifically concerned with the quantitative response to visible radiation of the human eye. See actinometer.
출처: amsglossary.allenpress.com/glossary/browse
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| radicle |
(L. radix, root) That portion of the plant embryo which develops into the primary or seed root.
출처: www.fao.org/docrep/003/X3910E/X3910E21.htm
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