Business & Economics
Hydrogen
100%
Rail
76%
Train
70%
Prediction
59%
Japan
50%
Energy
5%
Rail Network
5%
Decarbonization
5%
Rail Transport
5%
Carbon Dioxide Emissions
4%
Environmental Benefits
4%
Fossil Fuels
3%
Energy Sector
3%
Disposal
3%
Renewable Energy
3%
Environmental Impact
3%
Rural Areas
3%
Electricity
3%
Earth & Environmental Sciences
train
68%
hydrogen
56%
prediction
36%
diesel
6%
rail transport
5%
energy production
3%
energy
3%
alternative energy
3%
travel
3%
fossil fuel
3%
rural area
3%
electricity
3%
carbon dioxide
2%
vehicle
2%
environmental impact
2%
demand
2%
policy
2%
Engineering & Materials Science
Rails
62%
Hydrogen
58%
Decarbonization
13%
Fossil fuels
8%
Environmental impact
8%
Carbon dioxide
8%
Renewable energy resources
7%
Electricity
6%
Social Sciences
Japan
54%
energy
11%
Environmental benefits
10%
energy production
10%
renewable energy
8%
electricity
8%
environmental impact
7%
travel
7%
rural area
6%
demand
5%