North-Eastern Federal University

Epidemiological features of primary glaucoma in the Republic of Sakha (Yakutia)

OBJECTIVE: The study aimed to investigate the epidemiological features of primary glaucoma in the Republic of Sakha (Yakutia) over a 20-year period from 2005 to 2024. MATERIAL AND METHODS: Based on annual statistical reports submitted by ophthalmologists from cities and districts...

A method for diagnosing inflammatory periodontal diseases

Relevance. Periodontal diseases are widely studied today; however, a trend towards reduced morbidity has not been observed. Problems related to their diagnosis, treatment, and prevention remain not fully resolved, which necessitates further research. Objective. To improve the eff...

Describing edges in triangle-free 3-polytopes

An edge e in a 3-polytope is of type ( k 1 , k 2 , k 3 , k 4 ) if the set of degrees of the vertices and faces incident with e is majorized by the vector ( k 1 , k 2 , k 3 , k 4 ) . In 1940, Lebesgue proved that every 3-polytope has an edge of one of the types ( 3 , 3 , 3 , ∞ ) ,...