*KAZUSA NAKAGAWA¹, KAZUYUKI KAZUYUKI², YASUHIRO KAMADA², HIDEO WATANABE³ (1. Iwate Univ., 2. Iwate Univ., 3. Kyushu Univ.)

*Yusuke KOKUBU¹, Kiyohiro Kiyohiro³, Kazuhiro MORISHITA² (1. 京大エネ科（院生）、2. 京大エネ研（准教授）、3. 京大エネ研（助教）)

*Ryoji SAKAI¹, Masaaki Masaaki², Masatoshi TAKEDA² (1. Nagaoka Univ. of Tech., 2. Nagaoka Univ. of Tech.)

*Daiki SAITO¹, Masaaki Masaaki², Masatoshi TAKEDA² (1. Nagaoka Univ. of Tech., 2. Nagaoka Univ. of Tech.)

*Shunsuke Sumi¹, Teruyuki Teruyuki² (1. Grad. Sch. Sci. Eng., Ibaraki Univ., 2. Dept. Mater. Sci. Eng., Ibaraki Univ.)