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Submitted on: 23 July 2010.
Revised on: 16 August 2010.
Accepted on: 30 September 2010.
___________________JOURNAL OF ENHANCED HEAT TRANSFER
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Submitted on: 27 November 2010.
Revised on: 21 January 2011.
Accepted on: 20 March 2011.
___________________JOURNAL OF ENHANCED HEAT TRANSFER
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