Effect of Graphene Oxide on the Characteristics of sPEEK-Chitosan Membranes for Direct Methanol Fuel Cells

by Herry Purnama, Indra Viki Hartoko, Muhammad Mujiburohman, Nur Hidayati
Published 2020-04-01

Catalytic Transesterification of Used Cooking Oil to Biodiesel: Effect of Oil-Methanol Molar Ratio and Reaction Time

by Diah Ayu, Rizca Aulyana, Esti Widya Astuti, Kusmiyati Kusmiyati, Nur Hidayati
Published 2019-10-01