Anass A. Alnedhary
Chemistry Department, Faculty of Education, Khawlan Branch, Sana'a University, Sana'a, Yemen.
Abdualqawi A. Numan
Taiz University, Faculty of Applied Sciences, Chemistry Department, Taiz, Yemen; Aljanad University for Science and Technology, Faculty of Medical Sciences, Pharmacy Department, Taiz, Yemen.
Mahfoudh M. AL-Hammadi
Chemistry Department, Faculty of Science, Sana'a University, Sana'a, Yemen.
Taiseer H. Al-Hoded
Chemistry Department, Faculty of Science, Sana'a University, Sana'a, Yemen.