1. State Key Laboratory Breeding Base of Nonferrous Metals and Specific Materials Processing; College of Material Science and Engineering; Guilin University of Technology; Guilin 541004 P. R. China
2. Department of Machine Intelligence and Systems Engineering; Faculty of Systems Science and Technology; Akita Prefectural University; Yurihonjo 015-0055 Japan
3. College of Chemistry and Chemical Engineering; Yantai University; Yantai 264005 China