1. Post Graduate Student, Program Study Agricultural Industrial Technology, Bogor Agricultural University
2. Program Study of Mechanical Engineering, Pasir Pengaraian University
3. Department of Agricultural Industrial Technology, Faculty of Agricultural Industrial Technology, Bogor Agricultural University
4. Surfactant and Bioenergy Research Center, Bogor Agricultural University
5. Forest Fire Laboratory, Division of Forest Protection, Department of Silviculture, Faculty of Forestry, Bogor Agricultural University