Earth & Environmental Sciences
compressed air
87%
energy storage
83%
cavity
59%
analysis
18%
air
12%
safety
10%
limit analysis
10%
gas storage
9%
twentieth century
8%
energy production
7%
shaft
7%
contraction
7%
turbine
7%
electricity
6%
dating
5%
iron
5%
demand
4%
project
4%
energy
3%
comparison
3%
parameter
2%
water
2%
effect
1%
Physics & Astronomy
compressed air
100%
energy storage
75%
cavities
42%
safety
14%
air
13%
dating
10%
internal pressure
9%
electricity
8%
turbines
8%
electric power
8%
contraction
7%
theorems
6%
grids
6%
scalars
5%
iron
5%
evaluation
4%
expansion
4%
water
4%
gases
3%
energy
2%
Engineering & Materials Science
Compressed air energy storage
98%
Analytical models
35%
Iron mines
23%
Air
22%
Electric power systems
11%
Numerical models
11%
Turbines
10%
Electricity
10%
Gases
7%
Water
7%