Classification
ETFD - Solid oxide fuel cells ( SOFC )
30
ETF - Fuel cells - general
29
ETFP - Fuel cell construction and modeling
14
ETFG - Polymer electrolyte membrane fuel cells ( PEMFC )
13
ETFK - Direct methanol fuel cells ( DMFC )
4
CNW - Electrochemical energy production and conversion
2
CXA - Coal and fossil fuel - chemistry and technology
2
CXGK - Desulfurization of coal and oil
2
ETC - Energy conversion
2
EUU - Cogeneration
2
EWA - Energy economy
2
FGKC - Vacuum deposition, MBE
2
FGKF - Chemical vapor deposition
2
THD - Design and construction in mechanical engineering
2
TKJ - Traffic
2
CLM - Catalytic processes
1
CNU - Electrochemical synthesis, electrochemical engineering
1
CNWE - Electrochemical cells
1
CXRU - Synthetic fuels
1
CXX - Hydrogen production - chemistry and technology
1
EIP - Photovoltaics
1
ESB - Hydrogen energy
1
EUC - Energy conservation - civil engineering
1
FDKH - Ion transport in solids, solid state ionics
1
FMPJ - Steels and ferrous alloys for specific applications
1
FMXG - Metal hydrogen systems - specific aspects, specific systems
1
FNP - Ceramics - specific materials
1
FNPH - Ceramics for specific applications
1
THN - Heat exchanger
1
THQD - Gas flow
1
TIE - Process engineering
1
TKF - Power plants
1
TKH - Air flight, space flight
1