Yi Hua Ma (IMAGE) Worcester Polytechnic Institute Caption Yi Hua (Ed) Ma, Frances B. Manning Professor of Chemical Engineering at Worcester Polytechnic Institute Credit Worcester Polytechnic Institute Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.