Earth & Environmental Sciences
acidification
7%
ammonium
6%
animal waste
97%
biochemical oxygen demand
17%
biomass
44%
chemical oxygen demand
7%
chlorophyll
7%
chlorophyll a
7%
dry matter
19%
environmental factor
6%
irradiance
47%
multiple regression
8%
nitrate
17%
nitrification
14%
nitrite
7%
nitrogen
14%
nutrient removal
18%
phosphorus
11%
photosynthesis
7%
piggery
11%
pond
62%
rate
24%
reactor
5%
removal
12%
slurry
7%
temperature
12%
urea
8%
waste treatment
79%
Agriculture & Biology
absorbance
17%
acidification
9%
alkalinization
11%
ammonium nitrogen
11%
animal wastes
96%
biochemical oxygen demand
35%
biomass
39%
biomass production
16%
chemical oxygen demand
11%
chlorophyll
13%
dissolved oxygen
19%
environmental factors
5%
liquids
6%
nitrate nitrogen
11%
nitrates
15%
nitrification
21%
nitrite nitrogen
13%
nutrients
11%
phosphorus
6%
photoperiod
22%
photosynthesis
6%
pig manure
10%
regression analysis
7%
Scotland
9%
temperature
14%
total nitrogen
9%
total phosphorus
11%
urea
7%
waste treatment
100%