Validasi Metode Penentuan Mn Dalam Oli Lubrikan Dengan Metode Pengenceran Langsung Menggunakan Spektrofotometer Serapan Atom

by Rona Maningting Napitupulu, Dirgarini Julia, Aman S. Panggabean
Published 2019-01-01

Modification of Spent Bleaching Earth with WO3 and the Application for Photocatalytic Degradation of Waste Dyestuff under Solar Light

by Noor Hindryawati, Aman Sentosa Panggabean, Dirgarini Julia Nurlianti Subagyono, Rinda Anisyah Putri, Prilianda Kusmiaty, Gaanty Pragas Maniam
Published 2019-12-01