Professor Nigam is Assistant Professor of Chemical Engineering at the Indian Institute of Technology, Delhi, India. In 1985-6 he was awarded the Humbolt Fellowship to work on problems related to multiphase reactors and was a visiting scholar at the University of Cambridge from 1989-90. He has authored over 50 research in the field of chemical reaction engineering. Professor Schumpe is currently at the Technische Universität Braunschweig, Germany. Prior to this, he was a research scientist at the Biochemical Engineering Department of the National Research Centre for Biotechnology in Braunschweig. His particular research interest is multiphase reaction engineering, and he has authored over 80 papers in this field.