30.04.2024 у. at 14:30 o'clock Xujaqulov Amirjon Murodovich was defended on the topic: «Research and development of technology for rhenium extraction from mining wastes», in the specialty: 05.02.01 - "Materials science in mechanical engineering. Foundry production. Heat treatment and pressure treatment of metals" (technical sciences) for the degree of Doctor of Philosophy in technical sciences (РhD).