On December 20, 2021, at 14.00, the dissertation work of Ikramova Mukaddas Eralievna was defended on the topic: "Development of multifunctional import-substituting composite chemicals based on local raw materials and production waste for drilling fluids and for flotation of copper-molybdenum ores", specialty: 02.00.07 - Chemistry and technology of composite, paint and rubber materials (technical sciences) and 05.02.01 - Materials science in mechanical engineering. Foundry. Heat treatment and pressure treatment of metals. Metallurgy of ferrous, non-ferrous and rare metals. (technical sciences) for the degree of Doctor of Science (DSс).