Hydrothermal synthesis of zeolites from coal fly ash

The fly ash, from the combustion of coal to produce energy and heat, is an industrial waste, in which large accumulations represent a serious environmental threat. To reduce the environmental burden and improve the economic benefits of energy production, the science and industry focus on the transformation of coal combustion byproducts into new functional materials. The fly ash was studied by modern analytical methods. As a result of the hydrothermal reaction, several types of zeolites were synthesised from the fly ash: analcime, faujasite (zeolite X) and gismondine (zeolite P). It was shown that the experimental conditions (temperature, reaction time and alkali concentration) have a significant influence on the type of zeolite and its content in the reaction products. The series of experiments resulted in building approximate crystallisation field of zeolites and other phases as the first stage of the formation of ceramic membrane and other materials

Foundation of psychological support in the emotional experience of professional identity crisis by teachers

The background of the researched problem is determined by the psychological and pedagogical science’s and practice’s need to supplement the ideas about teachers’ professional development and about the course of their getting through the emotional experience due to difficulties of this process; as a result, it is necessary to study psychological foundations of building of psychological support programs in the process of school teachers’ getting through a professional crisis under conditions of permanent changes in the educational system. The main approach to studying this problem is the interview and phenomenological method that allows to identify and justify psychological basis of building of teacher support programs. The theoretical analysis allows to identify the nature of the support process, its goals and objectives, and to justify the methodological basis of the support program realization. The empiric results demonstrated that the process of teachers getting through the professional identity crisis goes hand in hand with the value-semantic transformation of a person and with “launching” of reflexive processes which, in turn, justifies resorting to them as to the psychological basis of building of teacher support programs. The research results expand the understanding of the nature of professional identity crisis phenomenon, the process of coming through it and supplement the data of the basis of building of teacher support programs. © 2018 by the authors

Semantic context of professional identity crisis experience by teachers

The topicality of the problem under research is predetermined by the need of psychology and pedagogy for the study of the phenomenology of professional identity crisis, the process of its experience by school teachers as well as for the development of the system of psychological and pedagogical support of teachers' professional development in the situation of permanent changes in the education system. The objective of the study is to reveal the content of the professional identity crisis, to describe its main features and analyze the semantic context of its experience by teachers. The principal methods of study of this problem are the phenomenological method, tests to identify the semantic context of the process of the professional identity crisis experience by teachers. The results of the study broaden the understanding of the phenomenon of professional identity crisis and its experience, the content of professional crisis and the phenomenology of professional development of teachers. The materials of the article may be useful for psychologists when designing programs of psychological support of teachers´ professional development. © 2017, Slovenska Vzdelavacia Obstaravacia. All rights reserved.Russian Humanitarian Foundation: No.16-36-01031The research is performed thanks to the support of the Russian Humanitarian Scientific Foundation within the framework of scientific and research project "Psychological mechanisms of professional identity crisis experience by teachers", project No.16-36-01031

Specifics of defense and coping behavior among teachers experiencing a professional identity crisis

The issues addressed in the article are of particular relevance due to the necessity to provide research background for creating the system of psychological and pedagogical support for the professional development of teachers in the conditions of permanent changes in the system of education. The aim of the article is to describe specific interrelations between the reflection and the parameters of the teacher's axiological sphere (in particular, life-purpose orientations). The following research methods were used: theoretical analysis of psycholog-ical and educational literature, phenomenological method, questionnaires, and methods of mathematical and statistical data processing (descriptive statistics, comparative analysis (the Mann-Whitney U test). The results of the theoretical and empirical research provide ade-quate grounds for the conclusion that there is a definite interrelation between the parameters of reflection and the parameters of life-purpose orientations. It is proved that in the conditions of a professional identity crisis the teachers experience a significant reduction in the levels of life-purpose orientations, which in turn leads to intensification of reflection processes. At the same time, the obtained results suggest that the teachers can successfully overcome their professional crisis in case of formation of the cognitive component of the biographical reflection, aimed at the analysis of actions and means of understanding and organizing their life events. Implications of the research results. The research results expand our understanding of the essence and emotional experience of the professional identity crisis. They can be used in the designing the process of psychological support for the activities and professional development of teachers. © 2018 Authors

Low molecular weight thymic factor inhibits histamine release from basophils

Low molecular weight thymic factor stimulates the suppressor function of T-lymphocytes, increases cAMP content (but not cGMP) in lymphocytes and inhibits histamine release from sensitized basophils. The mechanisms of LTF action are discussed

Technology psycho-pedagogical assistance to development of new types of activities of teachers of vocational school in terms of networking

The relevance of the problem stated in the article is due to the fact that currently the process of interaction between a person and a profession is complicated.Актуальность заявленной в статье проблемы обусловлена тем, что в настоящее время усложняется процесс взаимодействия человека и профессии

The effect of the laser-induced structures’ surface morphology on the luminescence of thermostable polybenzimidazoles

This study was performed in the framework of the RFBR grant Mol_а 18-33-00645

Genetic diversity of hepatitis C virus in Nanaian region, Khabarovsk territory

Examining hepatitis C virus (HCV) genetic diversity is of great practical value in molecular-epidemiological research, development of specific prevention tools and outlining therapeutic strategy.Aim of study is to conduct analysis assessing HCV genetic diversity circulating in the Nanaisky Region population of the Khabarovsk Krai.Materials and methods. Molecular and genetic analysis of 124 blood plasma samples collected from patients with chronic hepatitis C and residing in the Nanaisky Region was conducted.Results. HCV RNA was detected in 84 (67.7±4.2%) plasma samples. HCV genotyping was performed by using AmpliSens — 1/2/3 kit (Central Research Institute of Epidemiology, Moscow, Russian Federation) showing that genotype 3 dominated reaching up to 47.6±5.4% (n = 40). Genotype 1 was detected in 30 patients (35.7±5.2%). In thirteen cases (15.5±3.9%) genotype 2 was identified, whereas in one case (1.2±1.2%) virus genotype was unidentified. Phylogenetic analysis of the nucleotide sequences in HCV NS5B region was performed for 60 HCV RNA-positive samples showing subtype ratio as follows: 1a — 2 (3.3±2.3%), 1b — 23 (38.3±6.3%), 2а — 6 (10.0±3.9%), 2с — 2 (3.3±2.3%), 3а — 27 (45.0±6.4%). Three samples of RF2k/1b recombinant virus were found. A full NS2 gene nucleotide sequence was cloned in order to confirm the recombination event. The results of the study evidence about a need to conduct multi-layered examination of patients with chronic hepatitis C by using current molecular and biologic methods for assigning proper therapy coupled to characteristics of the isolated strains. The data regarding hepatitis C virus molecular and genetic parameters circulating in the Far Eastern Federal District, Russia, are rather limited. Hence, our study would contribute to current understanding of HCV genovariants circulating in territories of the Russian Federation

Association of Heart Rate Variability with the Psychosocial Stress Level in Men 41-44 Years Old Living in Moscow

Aim. Research of the association of heart rate variability (HRV) with the level of psychosocial stress (PS) and other indicators of the risk of cardiovascular diseases in a sample of 41-44-year-old men living in Moscow.Material and methods. A total of 299 men aged 41-44 years were examined. The study included a clinical examination and a survey using a standard questionnaire. The categorization of risk factors (RF) for cardiovascular diseases (CVD) was carried out in accordance with generally accepted criteria The psychosocial stress was assessed using the Reeder scale. Depending on the psychosocial stress level, all surveyed men were divided into 3 groups by terciles: group 1 (3,28-4,0 points) – mild stress, group 2 (2,71-3,14) – moderate stress, group 3 (1,28-2,57) – severe stress. The analysis of HRV was performed on the basis of a short recording of an electrocardiogram using the original software package.Results. Nonparametric ANOVA showed that the mean [M (95% CI)] values of the HRV time domain (SDNN, rMSSD and the state of regulatory reserves) were lower in the group of men with high PS compared with the group with low PS [25.3 ms (20.9-29.7) versus 40.5 ms (30.7-50.3), p=0.007; 29.5 ms (24.6-34.3) versus 49.5 ms (36.7-62.3), p=0.030; and 46.7 (44.7-48.6) versus 49.7 (48.1-51.4), p=0.019; respectively]. On the contrary, the mean values [M (95% CI)] of the integral indicators of HRV (SI and IVR) were higher in the group of men with high PS [635.8 c.u. (556.2-715.4) versus 488.9 (423.8-554.1), p=0.005; 1172.6 (1045.1-1300.1) versus 904.7 (790.0-1019.4), p=0.003; respectively]. The results of correlation and multiple regression analysis confirmed that these HRV indicators are statistically significantly associated not only with PS, but also with other indicators (age, waist / hip ratio, diastolic blood pressure). However, their predictive value turned out to be low, and the proportion of the explained variance of HRV indices ranged from 2.5 to 13.1%.Conclusion. The weakening of the autonomous regulation of the heart rate with a decrease in the activity of the parasympathetic link, the activation of the central circuit of regulation with the prevalence of sympathetic influences, a decrease in the functional reserves of the heart rate regulation system are associated with an increase in the level of PS and other indicators of the risk of cardiovascular diseases

Research of antioxidant activity of icelandic moss as a component of biologically active supplement

The article discusses the results of a study of the antioxidant activity of a biologically active food supplement "Heritage of Nature" Icelandic moss. Acetone, ethyl alcohol, and distilled water were used as extractants for obtaining extracts from moss. It was found that Icelandic moss has a high content of polyphenolic complexes and pronounced AOA.В статье рассмотрены результаты исследования антиоксидантной активности биологически активной добавки к пище «Наследие природы» исландский мох. В качестве экстрагентов для получения извлечений из мха использовали ацетон, этиловый спирт и дистиллированную воду. Установлено, что исландский мох обладает высоким содержанием полифенольных комплексов и выраженной АОА