nitrogen-15
A surname transferred from the given name.
(physics) A stable isotope of nitrogen, ¹⁵₇N, having seven protons and eight neutrons; it accounts for less than 0.4% of the natural element; it is used in nuclear magnetic resonance spectroscopy
Alternative spelling of Ch'orti'
plural of E♯
その研究では、土壌微生物における窒素の同化を追跡するために、安定同位体の窒素15（15N）を使用した。
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