1. Dr. Abdalla Ahmed Elbashir ( Associate professor)
Department of Chemistry
Faculty of Science
University of Khartoum
Tel: +249912989405
Email: hajaae@yahoo.com

2. Professor. Yousif Sulfab Ahmed
Department of Chemistry
Faculty of Science
University of Khartoum
Tel: +249908777041
Email: yousifsulfab@yahoo.com