1. Visiting scholar, Civil, Environmental, and Ocean Engineering Department Stevens Institute of Technology, Hoboken, NJ
2. Assistant professor, Faculty of Science, Alexandria University, Egypt
3. Department of Chemical Engineering & Material Science, Stevens institute of technology, Hoboken, NJ
4. Professor, Department of Biological Sciences, Michigan Technological University, Houghton, MI
5. Professor, Civil, Environmental, and Ocean Engineering Department Stevens Institute of Technology, Hoboken, NJ