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Hiromichi OHTA
Faculty of Engineering, Ibaraki University
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Tomohiro AKIYAMA
Institute for Advanced Materials and Processing, Tohoku University
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Kimihito HATORI
Faculty of Engineering, Ibaraki University
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Jun-ichiro YAGI
Institute for Advanced Materials and Processing, Tohoku University
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Yoshio WASEDA
Institute for Advanced Materials and Processing, Tohoku University