The Acta et Commentationes scientific journal, the Exact and Natural Sciences series is a periodical publication, whose purpose is to reflect and develop the modern scientific phenomenon in the field of Exact and Natural Sciences (Mathematics, Physics, Computer Science, Chemistry, Biology, Geography); dissemination of the results of the scientific performance researches (fundamental and applicative) in the fields of profile; publicizing new technologies in order to implement them; addressing and elucidating the scientific investigative problems specific to the journal profiles.