Medicine & Life Sciences
Natural Gas
100%
Radium
87%
Water Quality
86%
Waste Water
78%
Bromides
51%
Chlorides
42%
Oils
40%
Water
40%
Gases
33%
Radioactive Waste
33%
brine
33%
Strontium
28%
Hydrogen
23%
Barium
23%
Formal Social Control
20%
Oxygen
14%
Earth & Environmental Sciences
shale gas
63%
radium
54%
effluent
42%
wastewater
40%
water quality
39%
bromide
32%
fluvial deposit
28%
isotopic composition
25%
chloride
23%
shale
23%
liquid waste
18%
background level
16%
strontium
16%
environmental risk
15%
gas production
14%
oil production
14%
bioaccumulation
14%
waste disposal
14%
radioactive waste
14%
brine
13%
hydrogen
11%
regulation
10%
surface water
10%
oxygen
9%
water
9%
pollutant
8%
oil
8%
gas
7%
sediment
7%
Chemical Compounds
Wastewater
48%
Radioactive Waste Disposal
34%
Gas
31%
Bromide
29%
Bioaccumulation
26%
Chloride
23%
Surface Water
21%
Volume
11%
Liquid
10%
Hydrogen
10%
Dioxygen
9%
Time
7%