… 2012). Use and Applications Professor Khalil used the content of this research in three courses at the Yale School of Forestry & Environmental Studies: Air Pollution Control, … 2012). Use and Applications Professor Khalil used the content of this research in three courses at the Yale School of Forestry & Environmental Studies: Air Pollution Control, … 2012). Use and Applications Professor Khalil used the content of this research in three courses at the Yale School of Forestry & Environmental Studies: Air Pollution Control, …