1. Graduate School of Science and Engineering Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi 755-8611, Japan
2. Department of Environmental Science, College of Sciences, Hue University, Hue 470000, Vietnam
3. Graduate School of Sciences and Technology for Innovation Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi 755-8611, Japan
4. Division of Urban Infrastructural Engineering, Mien Trung University of Civil Engineering, Phu Yen 56000, Vietnam