1. Chemistry Department, Faculty of Science, Garyounis University, Benghazi, Libya
2. Life Science Department, Faculty of Education (Qemeenes Branch), Garyounis University, Benghazi, Libya
3. Chemistry Department, Faculty of Science (Derna Branch), Omar El-Mukhtar University, El-Beida, Libya
4. Botany Department, Faculty of Science, Garyounis University, Benghazi, Libya