1. Non-alcohol route of biodiesel synthesis from used cooking oil using immobilized biocatalyst in packed bed reactor
H. Hermansyah, R. Arbianti, D.A. Prameshwari

2. The effect of reaction time on the quality of hydrogen and carbon nanotubes produced through catalytic decomposition of methane
P.P.D.K. Wulan, W.W. Purwanto, Y. Muharam, S. Shafa, E. Listiani

3. The effect of solvent for extraction for removing nicotine on the development of charcoal briquette from waste of tobacco stem
S. Purwono, B. Murachman, J. Wintoko, B.A. Simanjuntak, P.P. Sejati, N.E. Permatasari, D. Lidyawati

4. Separation of methyl ester from water in a wet neutralization process
S.C. Low, G.K. Gan, K.T. Cheong

5. Indonesian building codes and its influence on future electricity demand
N.A. Utama, K.N. Ishihara, T. Tezuka, S.H. Gheewala, Q. Zhang

6. Optical studies of the microwave-treated tio2 photocatalyst by mir-fel
T. Sonobe, K. Yoshida, K. Hachiya, M.A. Bakr, T. Kii, S. Yoshikawa, H. Ohgaki