SCR Chemistry Abbreviation

Selective Catalytic Reduction

This after–treatment technology reduces NOx emissions by using a urea–based additive, sometimes referred to as DEF. The ammonia in the urea mixes with engine exhaust gases in the SCR catalyst, converting NOx to nitrogen and water vapor.

Solar Cosmic Rays (related To Spacecraft and Space Travel)

Spectral Collocation Representation (of Basis Sets)