*Kazuki Oura¹, Koyomi Nakazawa², Osamu Nagafuchi³, Shigejiro Yoshida⁴, Kenshi Tetsuka⁵, Seiichi Kanetani⁶ (1.The graduate school of Toyama prefectural university, 2.Toyama prefectural university, 3.Fukuoka Institute of Technology, 4.The Kyushu university museum, 5.Yaku-shima Yakutane-goyo Research Group, 6.Kyushu Reseach Center, Forestry and Forest Product Institute)

*Osamu Nagafuchi¹, Koyomi Nakazawa², Kazuki Oura³, Ken’ichi Shinozuka⁴, Tetsuo Sueyoshi⁶, Masanobu YamamotoYamamoto⁵, Tomoaki Watanabe⁷, Akihiro Mitsui⁷ (1.Fukuoka Institute of Techology, 2.Toyama Prefectural University, 3.Graduate school of Toyama Prefectural University, 4.Gifu University, 5.Hokkaido University, 6.JAMSTEC, 7.Nippon Instruments Corporation)