11:00 AM - 11:15 AM
*Daisuke Tsumune1, Tsubono Takaki1, Kazuhiro Misumi1, Yutaka Tateda1, Yasushi Toyoda1, Yuichi Onda2, Michio Aoyama3 (1.Central Research Institute of Electric Power Industry, 2.Center for Research in Isotopes and Environmental Dynamics, University of Tsukuba, 3.Institute of Environmental Radioactivity, Fukushima University)