13.02.2024 y. at 14:30 o'clock Makhammadjanov Xusanboy Alisher ugli was defended on the topic: «Development of effective composite thermosetting polymer materials and coatings based on them by stabilizing tribotechnical properties», in the specialty: 02.00.07 – "Chemistry and technology of composite, varnish and rubber materials" (technical sciences) for the degree of Doctor of Philosophy in technical sciences (РhD).