We are pleased to announce that Dr. Joanna Drzeżdżon received the award for the best presentation during the 15th International Conference on Inorganic Chemistry and Material Chemistry, which took place on December 2-3 2021 by presenting the oral communication entitled "Optimization of the Conditions of Oligomerization and Polymerization Processes of Selected Olefins with the Use of Complex Compounds of Transition Metal Ions", co-authored with Dr. hab. Marzena Białek, prof. UO from the Department of Chemical Technology and Polymer Chemistry, Opole University.