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Annotation. Among the various destructive phenomena that negatively affect the harmony of an individual's life, the issue of overcoming the feeling of inferiority takes on special importance. The study of this phenomenon among the population of Ukraine in the modern conditions of martial law and the COVID-19 pandemic is extremely relevant. The aim of the study is to translate, adapt and validate the questionnaire "Comparative Feeling of Inferiority Index", as well as to determine the feeling of inferiority index among student youth with its help. The following descriptive and analytical statistics methods were used in the research: arithmetic mean with standard square deviation (М±SD), percentages with error (Р±m, %), Cronbach's alpha coefficient (α-coefficient), correlation according to Spearman's rank (R). Within the framework of the research, a verified translation of the questionnaire into Ukrainian was carried out for the first time with adaptation of the terminology to the specifics of the language. Pilot testing of the translated questionnaire and repeated re-testing with the same participants was conducted, which proved excellent reliability and diagnostic discriminative ability of the method (R=0.74, p

We demonstrate that the phase diagram of a Lyotropic Chromonic Liquid Crystal (LCLC) is affected by ultraviolet (UV) light irradiation. UV-irradiation induces a phase transition from the nematic (N) to isotropic (I) state at a fixed temperature. Birefringence measured in-situ decreases under irradiation, until the moment when the isotropic phase starts to nucleate and the initial homogeneous nematic transforms into a biphasic state. On further irradiation the birefringence of the N fraction of the biphasic I-N state increases revealing redistribution of the composition components between the two coexisting phases. The efficiency of the irradiation-induced changes depends on the orientation of the chromonic aggregates w.r.t. the polarization of UV light. Changes of the birefringence are noticeably higher for light polarization perpendicular to the nematic director. The effect can be understood as a photo-induced weakening of the face-to-face molecular attraction within the chromonic aggregates and the resulting shortening of these aggregates.