Submitted on: 08 February 2013.
Revised on: 11 April 2013.
Accepted on: 23 April 2013.
___________________Advances in Nano Research---TECHNO-PRESS
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Submitted on: 17 June 1999.
Revised on: 20 July 1999.
Accepted on: 15 September 1999.
___________________Advances in Nano Research---TECHNO-PRESS
http://reply.papertrans.cn/1/8/779/779-34.png
Submitted on: 17 October 2012.
Revised on: 11 December 2012.
Accepted on: 16 January 2013.
___________________Advances in Nano Research---TECHNO-PRESS
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