Agriculture & Biology
anaerobic digestion
82%
cattle manure
81%
bioenergy
78%
pyrolysis
78%
biochar
67%
animal manures
53%
carbon
46%
nitrogen
41%
byproducts
39%
soil
35%
nitrous oxide
32%
sandy soils
30%
loess soils
22%
nitrous oxide production
19%
isotope labeling
19%
soil minerals
18%
loess
17%
greenhouse gas emissions
15%
ecosystem services
15%
mineralization
14%
soil fertility
13%
bioactive properties
12%
minerals
10%
Earth & Environmental Sciences
bioenergy
78%
cattle
71%
anaerobic digestion
70%
manure
68%
pyrolysis
63%
byproduct
51%
biochar
50%
nitrogen
42%
carbon
40%
soil
30%
sandy soil
24%
loess
22%
mineral
13%
soil fertility
12%
biological activity
12%
nitrous oxide
12%
labeling
11%
respiration
10%
greenhouse gas emissions
10%
incubation
9%
mineralization
8%
isotope
8%
laboratory
6%
loss
6%
Engineering & Materials Science
Manures
100%
Anaerobic digestion
92%
Pyrolysis
66%
Nitrogen
65%
Soils
55%
Carbon
53%
Byproducts
40%
Minerals
15%
Bioactivity
10%
Isotopes
9%
Gas emissions
8%
Greenhouse gases
7%
Labeling
7%
Oxides
6%