Director and Senior Principal Research Officer

Forest Research Institute, Dehradun, India

Distinguished Professor of Chemistry, The University of Texas at Arlington

Oak Ridge National Laboratory

Professor of Chemistry, University of British Columbia

Aarhus University

Shizuoka University, JAPAN

Associate professor, University of Milan

Professor of Horticulture and Crop Science, The Ohio State University

Head of the Lab., Polar-Alpine Botanical Garden-Institute, KSC, RAS