Crystal structure and conductivity of bismuth-containing complex oxides

In the paper, a comprehensive systematic study of different classes of bismuth containing oxide compounds was carried out. The relationship between composition, temperature and concentration regions of existence of stable, specific structure and properties of solid solutions on the basis of vanadates, molybdates, niobates and bismuth was found. The general regularities of synthesis of solid solutions with different variants of solid-phase and soluble methods were determined. On this basis, the optimal conditions for obtaining single-phase materials were formulated. For the first time the temperature and concentration boundaries of the regions of homogeneity and areas of stable existence of polymorphic modifications of solid solutions were defined and/or refined. The structural parameters of the synthesized phases were determined. By the method of electrochemical impedance spectroscopy the nature and features of impedance spectra, the temperature and concentration dependences of electrical conductivity of ceramic materials based on bismuth containing complex oxides were identified

Materials based on BIFEVOX and bismuth or iron simple oxides nanopowders

Received: 22.09.2017; accepted: 17.10.2017; published: 20.10.2017.Compositions of composite materials based on BIFEVOX and nanopowders of bismuth and iron oxides have been obtained. The absence of chemical interaction between the components has been proved, the total electrical conductivity of materials in the average temperature region has been determined. It has been shown that under the selected formation conditions, it has not yet been possible to achieve significant improvement of the functional characteristics of heterogeneous compositions in comparison with individual phases. However positive results on chemical and structural stability give way to further investigations.The work was partially supported by the Scholarship of the President (SP-3376.2016.1) and Russian Foundation for Basic Research (project No 17-53-04098)

Influence of the family socialization on the formation of gender features of modern teenagers

© 2015, Mediterranean Center of Social and Educational Research. All rights reserved. The relevance of the investigated problem is due to insufficient knowledge about the impact of parent-child relationship features on the development of the adequate teenager gender identity. The purpose of the article is to study the effect of the family socialization on the formation of gender features of modern teenagers. The leading approach to the study of this problem is the system-activity approach. In the course of empirical study it was found that the formation of masculine features of modern teenagers during the family socialization is associated with a positive attitude on the part of the father, and the formation of feminine traits is due to a positive attitude on the part of the mother and too rigid and inconsistent attitude on the part of the father. The article’s materials may be useful for psychologists, teaching staff, social workers

Organization of rational and environmentally sound use of forest resources, taking into account the economic factor on the example of the Kartopsky forestry of the Khanty-Mansi Autonomous Okrug (Yugra)

Balanced ecological and economic development is possible only with the development and implementation of a single comprehensive program for the use of natural resources, taking into account the need for environmental protection, restoration of natural resources, restoration and production of flora and fauna resources. The scale of the impact of anthropogenic factors has not yet been fully assessed, however, it can be said with confidence that the environmental losses that nature incurs from all types of negative impact on the environment significantly exceed the currently calculated economic losses

ELECTRICAL AND MAGNETIC PROPERTIES OF HEUSLER ALLOYS Ni47-xMn42+xIn11 (x = 0, 1, 2)

The electrical and magnetic properties of Ni47-xMn42+xIn11 (x = 0, 1, 2) Heusler alloys were studied. These alloys with a giant magnetocaloric effect (MCE) are of great scientific and practical interest due to their potential application in a field of magnetic refrigeration.Работа выполнена в рамках государственного задания ФАНО России (тема «Спин», № 01201463330) при частичной поддержке РФФИ (проект № 18-02-00739), Правительства Российской Федерации (постановление № 211, контракт № 02.A03.21.0006) и гранта № 14.Z50.31.0025 Министерства образования и науки РФ

The possibilities of quantitative analysis of the relationship between the severity of the COVID-19 pandemic and the institutional characteristics of the countries of the world

The interrelation of the severity of the epidemiological situation in a particular country and its institutional characteristics (including the level of health care, quality of management, the level of public trust, cultural characteristics, etc.) is considered. As a result, using the developed index of the severity of the epidemiological situation, the institutional characteristics that most affect the effectiveness of the measures applied were determined. It was figured out that of the 16 characteristics considered, only two (the level of employment and trust in the government) have a medium statistical correlation with the severity of the pandemic. Three more characteristics (prevalence of secular-rational values, degree of urbanization, GDP PPP per capita) have a correlation close to the medium. The remaining characteristics (including health care costs, government efficiency, etc.) have either a weak correlation wiыth severity, or actually do not have it. The results obtained indicate insufficient use and reassessment of existing institutional capacities at the initial stage of the pandemic, as well as insufficient reliability of morbidity and mortality statistics in a number of countries. In conclusion, based on the analysis of statistical indicators, recommendations are given to improve the effectiveness of the use of institutional capacity to counter epidemiological threats, improve this potential, increase the effectiveness of protective and restrictive measures that reduce the severity of the epidemiological situation