e-mail:  emeljack@uofk.edu 

Office: University of Khartoum

            Faculty of Engineering

           Department of Mechanical Engineering

            Engineering Tower

            5th Floor

e-mail:  eljack@kau.edu.sa 

Office: King AbdulAziz University

            Faculty of Engineering

           Department of Aeronautical Engineering

            Building 42 B

            2nd Floor