This email is to announce that An-Hsuan Hsieh, will be defending his thesis EFFECTS OF THE METHOD OF PREPARATION ON THE OPTICAL PROPERTIES AND STABILIZATION OF SUSPENSIONS AGAINST SEDIMENTATION OF AQUEOUS DISPERSIONS OF A DOUBLE-CHAIN CATIONIC SURFACTANT, Wednesday, July 20, 2022 at 10:00 AM by WebEx. The dissertation is directed by Dr. David Corti and Dr. Elias Frances. The abstract is attached, the WebEx information is below, and all are welcome to attend. https://purdue-student.webex.com/meet/hsieh25 Bev Johnson Graduate Program Administrator Chemical Engineering Forney Hall 2037D Purdue University 765-494-4057 [P bling]