background: measuring and monitoring of air pollutants are one of environmental and all' pollution controls tools. due to lack of widespread data in iran, this study was performed to estimate the trends of major pollutant emissions to atmosphere in the uk from 1980 to 1996. methods: this investigation is a retrospective study that the data were collected from the departments of environment, tra...

This work expands upon previous on a moving bed cryogenic carbon capture (CCC). Cryogenic using fixed packed captures CO2 frost deposited the surface of material; this build-up fouls heat transfer column and requires periodic shut down process to regenerate material collect for further storage. Using continuously removes frosted from preventing excessive eliminating need regeneration step withi...