Engineering & Materials Science
Ammonia
100%
Decarbonization
80%
Economic analysis
62%
Engines
59%
Hydrogen
55%
Powertrains
52%
Freight transportation
50%
Rails
39%
Nitric oxide
38%
Carbon
25%
Proton exchange membrane fuel cells (PEMFC)
17%
Economics
16%
Dynamic models
15%
Fuel cells
13%
Energy utilization
12%
Electricity
11%
Taxation
10%
Fuel storage
10%
Alternative fuels
10%
Reaction kinetics
10%
Hydrogen storage
9%
Combustors
9%
Pistons
9%
Hot Temperature
9%
Costs
8%
Propulsion
8%
Solid oxide fuel cells (SOFC)
8%
Mechanics
8%
Thermodynamics
8%
Oxygen
7%
Crankshafts
7%
Logistics
7%
Diesel engines
6%
Energy balance
6%
Air
5%
Business & Economics
Techno-economic Analysis
74%
Ammonia
65%
Fuel Cell
53%
Rail
48%
Freight
47%
Hydrogen
21%
Hydrogen Storage
15%
Membrane
14%
Hydrogen Fuel
13%
Diesel Engine
11%
Electricity Generation
9%
Train
7%
Electricity
6%
Logistics
5%
Costs
5%
Earth & Environmental Sciences
economic analysis
53%
fuel cell
43%
ammonia
37%
hydrogen
24%
cost
12%
membrane
10%
diesel engine
8%
electricity generation
8%
diesel
7%
train
7%
electricity
6%
logistics
6%
oxide
5%
infrastructure
5%