1. Determination of Cu and Pb concentrations based on urease activity inhibition of Durio zibethinus L. seeds 2. Phosphorous fractionation distribution in surface sediments of the Jobokuto Bay 3. Antioxidant Activity and Total Phenol Extract of Kecombrang Flower, Stem and Leaves with Different Types of Solutions 4. Two Limonoids from The Seeds of Chisocheton Macrophyllus and Their Cytotoxic …