Physics & Astronomy
algae
75%
China
69%
bacteria
66%
hydrocarbons
39%
petrology
37%
oil exploration
35%
geochemistry
33%
gas chromatography
26%
sediments
25%
hydrogenation
22%
isomers
20%
mass spectroscopy
20%
rocks
19%
oils
18%
Engineering & Materials Science
Algae
84%
Bacteria
69%
Biological materials
54%
Petrology
39%
Hydrocarbons
36%
Geochemistry
35%
Isomers
30%
Oils
26%
Mass spectrometry
26%
Hydrogenation
26%
Gas chromatography
25%
Sediments
25%
Rocks
17%
Earth & Environmental Sciences
alga
51%
Cretaceous
45%
bacterium
39%
basin
31%
hydrocarbon
28%
organic matter
27%
organic geochemistry
27%
oil exploration
23%
isomer
21%
petrology
21%
diagenesis
19%
gas chromatography
19%
mass spectrometry
17%
indicator
12%
oil
12%
rock
10%
sediment
9%
distribution
7%
analysis
5%
Chemistry
Hopane
100%
Organic Matter
66%
Hydrocarbon
44%
Geochemistry
43%
Indicator
27%
Gas Chromatography Mass Spectrometry (GCMS)
23%
Hydrogenation
22%
Compound Isomer
21%
Environment
17%