19.07.2025 у. at 14:30 pm o'clock Khursanov Abdullo Khalmuradovich was defended on the topic: «Scientific basis for the creation of composite chemical flotation reagents-foaming agents based on organo-inorganic ingredients and their use in the flotation process of non-ferrous and precious metal ores», in the specialty: 02.00.07 - "Chemistry and Technology of Composite, Paint-and-Varnish, and Rubber Materials (Technical Sciences)" and 05.02.01 - "Materials Science in Mechanical Engineering. Foundry Engineering. Heat and Pressure Treatment of Metals. Metallurgy of Ferrous, Non-Ferrous, and Rare Metals (Technical Sciences)" (technical sciences) for the degree of Doctor of sciences (DSс).