Medicine & Life Sciences
Nitrogenase
100%
Methane
86%
Hydrogen
73%
Isotopes
68%
Nitrogen
27%
Greenhouse Gases
13%
Dermatoglyphics
9%
Carbon
7%
Rhodopseudomonas
7%
Carbon Isotopes
7%
Nitrogen Fixation
6%
Noble Gases
5%
Vanadium
5%
Agriculture & Biology
isotope fractionation
89%
nitrogenase
70%
methane
61%
hydrogen
57%
nitrogen
16%
microorganisms
10%
greenhouse gases
9%
methane production
8%
carbon dioxide
6%
Rhodopseudomonas palustris
5%
carbon
5%
vanadium
5%
Earth & Environmental Sciences
hydrogen isotope
76%
fractionation
52%
methane
48%
nitrogen
26%
greenhouse gas
10%
enzyme
10%
biological nitrogen fixation
9%
isotopic fractionation
7%
methanogenesis
7%
carbon
7%
biogeochemical cycle
7%
vanadium
7%
energy
6%
carbon isotope
5%
byproduct
5%
isotopic composition
5%
stable isotope
5%
microbial community
5%