*Tatunari Yasutomi¹, Hiroshi Ogasawara², Akimasa Ishida², Hiroyuki Ogasawara², Raymond Durrheim³, Alex Milev⁴, Makoto OKUBO⁵, Teruhiro Yamaguchi⁶, James Mori¹ (1.Kyouto university, 2.Ritsumeikan university, 3.Univ.Witwaterarand,South Africa, 4.CSIR,South Africa, 5.Kouchi university, 6.Hokkaidou university)