1. Key Laboratory of Nondestructive Test (Ministry of Education), Nanchang Hangkong University, Nanchang 330063, China
2. Department of Mathematics, Physics and Electrical Engineering, Northumbria University, Newcastle upon Tyne NE1 8ST, U.K.
3. Laboratoire de Physicochimie de l’Atmosphère,Université du Littoral Côte d’Opale, 189A Av. Maurice Schumann, Dunkerque 59140, France