By Mrs. Saidatul Radhiah binti Ghazali, University College Tati
| 1 | Comment from Dr. Arlina Binti Ali, 2023-08-27, 1:10:42 PM | Why HAp added with Mn and Fe |
| 2 | Question from Dr. Hamdi Muhyuddin Barra, 2023-08-29, 9:16:18 AM | Is there a relationship between the HOMO-LUMO energy band gap of the three samples and their UV absorption properties? |
| 3 | Question from Mr. Sunny John A. Lood, 2023-08-29, 11:18:47 AM | Is there any possible increased in the SPF value if Fe and Mn are mix? Thanks |