Prof. Dr. Donia Khairallah Khassaf, from the Dept of Applied Marine Sciences has participated in the debate committee of the doctoral candidate, Riyad Shaker Badih, from the College of Agriculture, Department of Soil Sciences and Water Resources. His thesis was entitled “Study of Equilibrium and Kinetics of Adsorption and Liberation of Boron from Soils Treated with Zeolite and Organic Residues and its impact on the Growth of Cowpea Vigna Unguiculata L”.