25.09.2023 y. at 14:00 o'clock Umirova Nilufar Omonboyevna was defended on the topic: «Development of composite polymer materials using finely dispersed wollastonites for the production of linoleum», 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).