Isotopes of nitrogen - Wikipedia

Nitrogen-15 is a rare stable isotope of nitrogen. Two sources of nitrogen-15 are the positron emission of oxygen-15 and the beta decay of carbon-15. Nitrogen- ...

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Изотопы азота — Википедия

Изото́пы азо́та — разновидности атомов (и ядер) химического элемента азота, имеющие разное содержание нейтронов в ядре. Природный азот состоит из двух стабильных изотопов 14N и 15N с атомными концентрациями 0,99636 и 0,00364 соответственно.

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Functionalized N,N-Diphenylamines as Potent and Selective EPAC2 ...

28 мар. 2016 г. ... N,N-Diphenylamines were discovered as potent and selective EPAC2 inhibitors. A study was conducted to determine the structure–activity ...

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Isotopes of nitrogen - Wikipedia

Natural nitrogen (7N) consists of two stable isotopes: the vast majority (99.6%) of naturally occurring nitrogen is nitrogen-14, with the remainder being nitrogen-15.

Cancer Statistics Review, 1975-2017 - SEER Statistics

Released April 15, 2020. This is a past version of the SEER Cancer Statistics Review that includes statistics from 1975 through 2017. ... Howlader N, Noone AM, Krapcho M, Miller D, Brest A, Yu M, Ruhl ...

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A leader in the user experience field, NN/g conducts groundbreaking research, trains and certifies UX practitioners, and provides UX consulting to clients.

NMR studies of double proton transfer in hydrogen bonded cyclic N ...

28 авг. 2007 г. ... Using dynamic NMR spectroscopy, the kinetics of the degenerate double proton transfer in cyclic dimers of polycrystalline (15)N ...

Variation in discrimination factors (Δ15N and Δ13C): the effect of diet ...

3 мар. 2009 г. ... We found a significant negative relationship between both, Δ13C and Δ15N, with their corresponding diet isotopic ratios. This relationship was ...

Report on Carcinogens, Fifteenth Edition - N-Nitrosamines: 15 Listings

Formation of N-nitroso compounds: chemistry, kinetics, and in vivooccurrence. Toxicol. Appl Pharmacol31:325-351. NRC. 1995. Nitrate and Nitrite in the Drinking ...

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Executive Order N-15-19

EXECUTIVE ORDER N-15-19. WHEREAS, in the early decades of California's statehood, the relationship between the State of California and California Native.

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Nitrogen-15 (15N) | Isotope-Labeled Compounds | MedChemExpress

Nitrogen-15 (15N) is a stable isotope atom of nitrogen-14 (14N), it contains seven protons and eight neutrons, and its atomic mass is 15.

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Structure of N,N'-bis(amino acids) in the solid state and in solution. A ...

7 нояб. 2008 г. ... ... (15)N) corresponding to a double proton migration between two proximal tautomers. Publication types. Research Support, Non-U.S. Gov't. MeSH ...