Earth & Environmental Sciences
nutrient
30%
fish
27%
hydroponics
26%
emergy
25%
aquaculture
25%
rice
21%
sensor
19%
aquaculture system
19%
anaerobic treatment
17%
sustainability
15%
desulfurization
13%
vegetable
13%
modeling
12%
sulfide
11%
nutrient use efficiency
11%
electricity
11%
farm
10%
sulfur
10%
reactor
10%
water use efficiency
10%
volatilization
10%
aquaculture production
10%
bioreactor
10%
adsorption
9%
demand
9%
biogas
9%
digestion
9%
energy
9%
drinking water
9%
plant production
9%
ammonia
8%
water
8%
biomass
8%
market
8%
gas
8%
parameter
7%
water efficiency
7%
energy recovery
7%
environmental impact
7%
desalination
7%
phosphate
7%
food product
7%
biofertilizer
7%
sizing
7%
monitoring
6%
growth modeling
6%
mineralization
6%
hydrogen sulfide
6%
sludge digestion
6%
membrane
6%
Agriculture & Biology
aquaponics
100%
biofloc technology
25%
emergy
24%
aquaculture
23%
hydroponics
14%
nutrients
13%
fish
12%
electricity
12%
tilapia (common name)
12%
sludge
10%
Kenya
9%
systems engineering
9%
sensors (equipment)
9%
aquaculture systems
8%
farming systems
8%
lettuce
8%
water
8%
synthesis
8%
potatoes
8%
recirculating aquaculture systems
7%
mineralization
7%
renewable electricity
7%
circular economy
7%
nutrient use efficiency
7%
anaerobic treatment
7%
digestion
7%
potato protein
7%
physical models
6%
markets
6%
fish ponds
6%
economic sustainability
6%
bioenergy
6%
renewable energy sources
6%
nitrogen
6%
storage quality
5%
foods
5%
water use efficiency
5%
frying
5%
energy
5%
Tilapia (Cichlidae)
5%
temperature
5%
kinetics
5%
Engineering & Materials Science
Nutrients
19%
Sulfides
16%
Fish
15%
Water
14%
Desulfurization
14%
Potable water
13%
Biomass
12%
Electricity
12%
Acoustic fields
12%
Anaerobic digestion
12%
Ammonia
11%
Sensor data fusion
11%
Wastewater treatment
11%
Desalination
11%
Pore size
11%
Phosphates
11%
Vaporization
11%
Sulfur
10%
Recovery
10%
Adsorption
9%
Environmental impact
9%
Parameter estimation
8%
Data Analytics
8%
Bioreactors
8%
Monitoring
8%
Adsorbents
7%
Aquaculture
7%
Biogas
7%
Carbon
7%
Polysulfides
7%
Vegetables
7%
Environmental impact assessments
7%
Pressure sensors
7%
Crops
7%
Oxygen supply
7%
Hydrogen sulfide
6%
Sour gas
6%
Gases
6%
Water distribution systems
6%
Stoichiometry
6%
Sustainable development
6%
Particle size
6%
Iron oxides
6%
Sulfates
6%
Set theory
6%
Bacteria
6%
Sensitivity analysis
6%
Activated carbon
5%
Uncertainty analysis
5%
Feedforward control
5%