- Worked at the National Institute for Environmental Studies (NIES), Tsukuba, Ibaraki, Japan (October-November 2010)
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- Associated for work with HMR International Environmental Consultants, Sultanate of Oman since September 2010
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- Worked at the Department of Civil and Environmental Engineering, University of Ulsan, Korea, October 2007 – Sept 2008
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- Worked at the Department of Civil and Environmental Engineering, University of Ulsan, Korea, January 2007
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- Worked at Urban Environmental Division, Institute for Global Environmental Strategies, Japan, 2004-05
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- Worked as Consultant at Urban Environmental Division – Kitakyushu Office, Institute for Global Environmental Strategies (IGES), Kitakyushu, Japan (2003-04)
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- Worked as Post-doctoral research fellow at School of Environment, Resources and Development, Asian Institute of Technology (AIT), Bangkok, Thailand (May – July 2002).
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- Worked as Post-doctoral research fellow at School of Environment, Resources and Development, Asian Institute of Technology (AIT), Bangkok, Thailand (Jan – June 2001).
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- More than 50 aboard trips on various assignments to various international bodies.
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