[The competence in health issues of population of circumpolar region of the Russian Federation].

The health literacy of citizen is determined by a set of demographic and social factors. The deficiency of health literacy of population in the Russian Arctic Zone conditions delay in indicators characterizing population health from their all-Russian values and menaces ability to achieve the targets of the National Strategy of Development of Russian Arctic Zone and Ensuring National Security up to 2035.The purpose of the study is to assess level of health literacy of patients and healthy population residing in circumpolar territories of Russia (Arkhangelsk Oblast).The level of general health literacy in the subgroups of respondents varied in narrow range of 26.9-36.3 points. The most significant difference was established between scores of interactive health literacy (Δ = 4.1 points) and critical health literacy (Δ = 3.4 points), which were higher in group of healthy respondents. The predictors of level of general health literacy are clinical status (value of dependent variables in healthy respondents was on average higher on 0.75-1.73 points), self-assessment of one's positioning in society (every additional point increases average level of general health literacy by 0.47-0.79 points) and age (every additional year of life reduces level of general health literacy by 0.08 - 0.09 points). The results of the study indicate on dependency between clinical status and the level of health literacy, determine social characteristics of risk group with low health literacy as object of additional preventive measures directed at citizen residing in in circumpolar terrotories of The Russian Federation.

Sub-lattice of Jahn-Teller centers in hexaferrite crystal.

A novel type of sub-lattice of the Jahn-Teller (JT) centers was arranged in Ti-doped barium hexaferrite BaFe12O19. In the un-doped crystal all iron ions, sitting in five different crystallographic positions, are Fe3+ in the high-spin configuration (S = 5/2) and have a non-degenerate ground state. We show that the electron-donor Ti substitution converts the ions to Fe2+ predominantly in tetrahedral coordination, resulting in doubly-degenerate states subject to the [Formula: see text] problem of the JT effect. The arranged JT complexes, Fe2+O4, their adiabatic potential energy, non-linear and quantum dynamics, have been studied by means of ultrasound and terahertz-infrared spectroscopies. The JT complexes are sensitive to external stress and applied magnetic field. For that reason, the properties of the doped crystal can be controlled by the amount and state of the JT complexes.

[The rational approach to the estimation of the myocardial infarction size].

The paper contains review of published data on various methods of quantitative assessment of myocardial infarction (MI) with demonstration of their advantages and drawbacks. Comparative analysis of applicability of existing biochemical markers of necrosis for measurement of the volume of myocardial damage is also presented. Troponin I level measured in 72 hours after onset of chest pain appears to be the most reliable predictor of MI size but its use is justified only in patients with restored perfusion. Troponin T level measured in 72 hours after onset of acute coronary syndrome also correlates closely with MI size but does not depend on the character of reperfusion. Estimation of MI size based on blood concentration of troponins is more precise than methods based on levels of creatine phosphokinase and its MB fraction.