This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal).
This article has been retracted at the request of the Editor-in-Chief. At the request of the University of Wyoming’s Office of Research Integrity, based on an institutional finding of research misconduct by Dr. Jun Ren, this article has been retracted following an institutional investigation which found evidence of falsification in Figures 5, 6 and 7 that affect the reported results and conclusions. All authors have been notified of the retraction of this article.
Footnotes
DOI of original article: https://doi.org/10.1016/j.yjmcc.2010.10.023.