Abstract :
ACKNOWLEDGMENTS
I would like to express my sincere gratitude to my supervisor, Professor Masayuki
Sakakibara for his lecture, encouragements, guidance, and invaluable suggestions during my
experiments, writing papers and all of my study activities.
I would like to extend many thanks to Professor Koichiro Sera and Professor Sakae
Sano for sharing his knowledge about PIXE analysis and ICP-MS analysis.
I wish to thank Dr. Idham Andry Kurniawan for his assistance of conducting mapping
analysis and sharing knowledge about geology science. I also wish to dr. Ana Zaharina for
her assistance of medical checkup and neurological assessment in my research.
I also wish to thank Mrs. Kyoko Jomae, Mrs. Miho Otani and Mr. Myo Han Htun for
their assistance to arrange my study.
My great appreciation to Sakaken?s laboratory members: Ms. Hazuki Tokai, Mrs.
Nurfitri Abdul Gafur, Mr. Hendra Prasetya, Mr. Basri Mahmud (Chairman of Association of
Indonesian Students (PPI)), Mr. Masulili Febryanto, Mrs. Sri Manovita Pateda and Ms. Andi
Arumansawang for their willing cooperation.
I am deeply grateful to Professor Ruth Vergin and Mr. Ozaki Kimiyuki for their
invaluable supports during my stay in Matsuyama. I would like to thank management staffs
of Graduate School of Science and Engineering, Ehime University for their sincere help and
assistance during my study period. Also, I would like to acknowledge Indonesian government
and Universitas Muslim Indonesia (UMI) for providing DIKTI-BLN scholarship.