1. Hydroxyapatite (HAp) From Tenggiri Fish Bones As Abrasive Material In Toothpaste Formula 2. Synthesis of Mn(II) Complexes-Carboxymethyl Chitosan Schiff Base Salicylaldehyde and Antibacterial Activity 3. Synthesis and Characterization of Ag/TiO2 Nanoparticles using Mirabilis jalapa Plant Extract 4. Antibacterial Activity of Sugarcane Bagasse Nanocellulose Biocomposite with Chitosan Against…