Engineering & Materials Science
Anaerobic digestion
89%
Biogas
78%
Students
75%
Aluminum sulfate
72%
Turbidity
71%
Electricity
62%
Gas stoves
60%
Information technology
60%
Education
57%
Internet of things
57%
Information systems
55%
Error correction
53%
Absorption cooling
51%
Developing countries
50%
Nonprofit organization
50%
Climate change
46%
Blowouts
46%
Coagulation
45%
Solar radiation
44%
Water treatment
42%
Greenhouse gases
41%
Seed
41%
Problem-Based Learning
39%
Zigbee
38%
Carbonates
38%
Sustainable development
37%
Potential energy
37%
Linear equations
37%
Water
37%
Brick
36%
Lighting
36%
Refrigeration
36%
Biodiesel
36%
Fuel burners
35%
Renewable energy resources
34%
Temperature
34%
Gases
34%
Cooling systems
33%
Particle size
32%
Methane
31%
Solar energy
30%
Biomass
30%
Biofuels
30%
Economics
29%
Membranes
28%
Steam
27%
Costs
26%
Leakage (fluid)
26%
Carbon
25%
Health
25%
Earth & Environmental Sciences
turbidity
47%
stove
43%
refrigeration
43%
aluminum
42%
size effect
39%
lighting
37%
information technology
37%
environmental conditions
35%
seed
35%
brick
35%
anaerobic digestion
33%
biogas
33%
information system
32%
coagulation
32%
comparative study
30%
water treatment
30%
sulfate
30%
public health
30%
removal
28%
biofuel production
28%
health care
28%
socioeconomics
28%
communication
26%
methane
26%
cooling
24%
particle size
23%
services
23%
biofuel
23%
health
23%
public
22%
oil extraction
22%
monitoring
21%
nanoparticle
21%
physicochemical process
21%
technology adoption
20%
regulation
20%
rural area
20%
oil
20%
station
19%
developing world
19%
torque
18%
water
18%
water purification
18%
esthetics
17%
agroindustry
16%
electricity
15%
method
14%
plastic waste
13%
experiment
13%
metal oxide
13%
Agriculture & Biology
Estonia
100%
methane
99%
energy crops
82%
biogas
66%
organic wastes
42%
Miscanthus sacchariflorus
41%
Colombia
34%
dairy farming
34%
animal manures
30%
energy
30%
Setaria italica
29%
biomass
29%
methane production
27%
lignin content
27%
chemical composition
26%
Helianthus tuberosus
24%
alternative crops
23%
swine
22%
silage
21%
cattle manure
19%
hay
16%
Helianthus annuus
16%
sour cream
14%
non-food crops
13%
anaerobic digestion
13%
milk industry
13%
Setaria (Poaceae)
12%
environmental science
12%
Luvisols
11%
Jerusalem artichokes
11%
livestock
11%
industrial crops
11%
Cannabis sativa
11%
agricultural sciences
10%
brewing industry
10%
industrial wastes
10%
hemp
10%
pig manure
9%
local government
9%
large farms
9%
rural development
8%
phytomass
8%
lignin
8%
Latin America
7%
economic development
7%
renewable energy sources
7%
organic fertilizers
7%
food industry
7%
industrial sites
7%
confidence interval
7%