Recently we have heard the sad news of Prof. UT, as he was kindly called by everyone, has passed away. He was a value member of the Department of Chemical and Petroleum Engineering at Schulich in Calgary, Alberta, Canada. He did an undergraduate course of Chemical Engineering at University of Alberta, Canada and got his Ph.D. in 1996 from University of Minnesota, EUA. From 2000 to 2009 he was a Professor at University of Alberta, Canada and since then as a Professor and Schulich Industry Research Chair at University of Calgary, Canada.