On Tuesday May16th ,2023, Two seminars consequently at 11:00 am and 11:30 am under related titles : 1- "Enhancing Enzymatic Activity of Mn @ Co3 O4 nanosheets as memitic Nanozyme for colorimetric assay of ascorbic acid " and 2- "Thensis of Mn O2 sub_ microspheres with Effective Oxidates_mimicking nanozymes for the colorimetric assay of ascorbic in orange fruit and juice " have been presented by assist prof dr Nidhal Meena Sher Mohammed from college of Pharmacy/Department of Medicinal Chimestry in the seminar hall.