Results 111 to 120 of about 128,824 (253)

Carbon and nitrogen isotope fractionation of amino acids in an avian marine predator, the gentoo penguin (Pygoscelis papua) [PDF]

open access: gold, 2015
Kelton W. McMahon   +4 more
openalex   +1 more source

Nitrogen isotopes [PDF]

open access: yesEnvironmental Science & Technology, 2007
openaire   +1 more source

Nitrogen Transport Pathways and Source Contributions in a Typical Agricultural Watershed Using Stable Isotopes and Hydrochemistry [PDF]

open access: gold
Zhi Tang   +10 more
openalex   +1 more source

Research on Production of 15N Isotope with N2 by Gas Diffusion Method

open access: yesYuanzineng kexue jishu
There are two natural stable isotopes of nitrogen, 14N and 15N, with isotopic abundances of 99.636% and 0.364%. 15N is widely used in research and analysis in atmospheric tracing, agricultural and forestry research, and origin tracing.
HAN Yilun, ZHOU Mingsheng, WANG Fei
doaj   +1 more source

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