Within the scientific activities of the Department of Chemical Engineering, a doctoral thesis for the student Areej Dalaf Abbas entitled (Evaluation of Nano-Additives Effect on the Performance of Multiphase flow Systems in Petroleum and Gas Sector) was discussed on Tuesday, June 28, 2022. The discussion committee consisted of Prof. Dr. Adnan Abdul-Jabbar Abdul-Razzaq, chairman, Asst. Prof. Dr. Saleh Abdul-Jabbar Saleh, member, Asst. Prof. Dr. Riyad Sadiq Muhammad, member, Asst. Prof. Dr. Yasser Emad Abdel Razzaq, member, Asst. Prof. Dr. Zainab Talib Abed Zaid, member, and under the supervision of Prof. Dr. Khalid Ajami Sukkar. As well as the scientific evaluation of the thesis by Prof. Dr. Bassem Obaid Hassan from Al-Nahrain University and Prof. Dr. Raheeq Ismail Ibrahim from the University of Technology, and linguistically by Asst. Prof. Dr. Alaa Abdel Hadi from the University of Technology.