*Luis Salala^1,2、Noriaki Watanabe¹、Noriyoshi Tsuchiya^1,3 (1.Department of Environmental Studies for Advanced Society, Graduate School of Environmental Studies, Tohoku University, Japan、2.Department of Mechanical Engineering, Faculty of Engineering and Architecture, University of El Salvador, San Salvador, El Salvador、3.National Institute of Technology, Hachinohe College, Hachinohe, Japan)