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Ryuichiro Oshima
Faculty of Engineering Science, Osaka University
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Seiji Sugimoto
Student, Osaka University
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Masaaki Sugiyama
Graduate Student, Osaka University
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Tokio Hamada
Isehara Works, Tanaka Kikinzoku Kogyo K. K.
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Francisco Eiichi Fujita
Faculty of Engineering Science, Osaka University