This work was supported by the grants from the National Natural Science Foundation of China ( 81200217 , 81370376 ), the Natural Science Foundation of Hunan Province ( 2015JJ4097 ), the Key Project of Science and Technology Department of Hunan Province ( 2015JC3081 ), the Key Project of the Education Department of Hunan Province ( 15A137 ), the Visiting Scholar Foundation of Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education ( CQKLBST-2014-002 , CQKLBST-2015-004 ), and by the Construct Program of the Key Discipline in Hunan Province ( [2011] 76 ).