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Ikuo Hara
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Tsugio Shiota
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Kang Ji Hoon
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Nobuo Sakakibara
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Toru Takeshita
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Author's Organization:Department of Earth and Planetary System Science,Faculty of Science,Hiroshima University Department of Material Science,Faculty of Integrated Arts and Sciences,Tokushima University Department of Earth and Planetary System Science,Faculty of Science,Hiroshima University Department of Earth and Planetary System Science,Faculty of Science,Hiroshima University Department of Earth and Planetary System Science,Faculty of Science,Hiroshima University