KATCHAR
SCIENTIFIC PERIODICAL
I, 2019
Recommended by the Scientific Council of the International
Scientific–Educational Center of NAS RA
SERGEY NIKOGHOSYAN
PhD in Physical and Mathematical Sciences
YERJANIK ZARGARYAN
PhD in Physical and Mathematical Sciences
ALBERT SARGSYAN
Doctor of Physics and Mathematics
FEATURES OF SHORT-TERM HEAT TREATED ELECTRICAL TRANSPORT PROPERTIES IN LONG-TERM STORED HIGH-TEMPERATURE YBA2CU3OX SUPERCONDUCTORS
Temperature (77-290) K has been studied in terms of the electrical transport of the polycrystalline YBa2Cu3Ox samples stored in the room for 30 years after the synthesis, depending on the subsequent heat treatment modes. The following main results were obtained:
- In case of rapid cooling of the sample after heat treatment, increase of the low temperature resistivity and a superconducting (SC) transition width accompanied by a decrease in the critical transition temperature Tc. However, the resistivity in the region of linear temperature dependence, in case of slowly frozen sample, gradually decreases in comparison with the original state.
- The samples are characterized by a temperature Tp>>Tc below which, the pseudogap mode is established in the sample, characterized by a significantly different deviation from the linear dependence of resistivity. The temperature of the pseudogap mode Tp decreases faster than Tc, depending on the sample freezing rate.
- In the original, slow and rapid frozen samples, the resistivity in temperatures T> Tp varies linearly, but in the first and second cases it is a metal, and in the third case, semiconducting behavior. In addition, in the latter case, the quasi-metal behavior was observed in the narrow temperature range, preceding the onset of the (SC) transition.
These results are qualitatively interpreted in the frame of the model of inhomogeneous distribution of previously present, as well as, new structural defects, caused by heat treatment in the Cu-O chains of the spatial lattice of samples.
UDC 577.332
ARAM SHAHINYAN
Academician of NAS RA
ARMEN POGHOSYAN
Doctor of Physics and Mathematics
TIGRAN VARDANYAN
Master of Biophysics and Bioinformatics
ACETYLCHOLINESTERASE DOCKING ANALYSIS
Abstract
The struggle with Alzheimer's disease (AD) and the increase rate of nerve agents used in the world makes us study more closely the mechanisms of generation and termination of the neural signal. One of the most important enzymes involved in mechanisms is acetylcholinesterase (AChE).
The AChE is an enzyme that hydrolyses the acetylcholine (ACh) neurotransmitter in the neuromuscular junctions and in other cholinergic synapses to terminate the neuronal signal.
Docking of molecular compounds into the active sites and the evaluation of the binding affinity is a key of drug-design issues.
In this paper, a docking study was carried out using Autodock software package. We find out the minimum of complex total energy -5.3kcal/mol and the maximum -4.5kcal/mol. We also show the optimal conformation of ACh in the active site of AChE before the hydrolysis starts.
Keywords: Acetylcholinesterase, acetylcholine, Molecular docking, Alzheimer's disease, nerve agents, acetylhydrolase.
PIPOYAN DAVIT
Doctor of Food Science (Italy)
BEGLARYAN MELINE
PhD in Technical Sciences
STEPANYAN STELLA
Master Student at the Department of Environmental Protection and Nature Management, ISEC NAS RA
EXPOSURE ASSESSMENT OF NICKEL IN HONEY PRODUCED IN ARMENIA
The aim of this study is to assess non-carcinogenic and carcinogenic risks of nickel through the consumption of honey. The obtained results indicate that the estimated daily intake of nickel through honey consumption does not exceed the acceptable daily intake. Nevertheless, carcinogenic risks caused by chronic exposition of Ni through use of honey were found.
ZHOZEPH PANOSYAN
Doctor of Physics and Mathematics
PREPARATION OF EFFICIENT PHOTOVOLTAIC MODULE
WITH APPLYING HIGH TECHNOLOGIES
Renewable Energy Sources (RES) were the most discussed and up-to-date topic of 20th-century energy, as the country's economic development capability was determined by the extreme dependence of electricity. In the 20th century, the combustion of fossil carbohydrates by traditional methods was used and polluted the planet's atmosphere with its emissions and waste.
Solar energy is the most widespread and most powerful source of energy for the planet Earth, it is also known as a renewable energy source in the ecological point of view. The fastest growing branch of renewable energy sources is solar photovoltaic energy. Therefore, the development of solar photovoltaic energy with efficient batteries and modules is needed both for the world economy and for Armenia, one of whose primary goals is energy-technical development. Especially when their development is done by nanotechnology methods called high technology. In order to mitigate the expected energy crisis in the 30s and '40s of the 21st century, it is necessary to solve the problem of the use of solar energy with the production of more efficient photovoltaic devices. This can be possible with Si as well as thin film semiconductor modules, whose photoconductivity range covers the possible maximum part of the Sun's spectrum. In this work, it has been described how to ensure the production and use of Solar photovoltaic devices with a new solar cell manufacturing technology based on Si crystals and a new photovoltaic device. Today's worldwide technical production is based on the use of alloyed silicon crystals, the preparation of which was elaborated and well-researched. For this reason, an alloyed silicon crystal or a crystal with n-p potential barrier was taken for the preparation of silicon solar cell on the surface of which it has been grown various nanostructured carbon thin-films to increase the effectiveness and the duration of continuous operation. The developed high technology enables the production of these cells in Armenia, importing only the silicon semiconductors. New technology for the production of photovoltaic modules has been developed, which does not use polymer membranes that reduce the effectiveness but are used to regulate the temperature of the device in metal aluminium foil.
For such a radical change in the country's energy-system, 10-20 years is a very short period of time, and therefore it is necessary to invest a lot of money, energy, and dedication both with Armenian and global investment to achieve the goal.
MANUK HARUTYUNYAN
Doctor of Philosophy, Professor
SICK SOCIETY:
FROM DIAGNOSIS TO RECOVERY STRATEGY
The article reveals the conceptual analysis of the systemic alienation of the Armenian society. Disclosed is the undeniable fact that under the previous regime sentiment of political estrangement applied not only to the executive, legislative and judicial authorities but also to the main parties and public organizations. To overcome them, the author has developed and launched a new logic or project for Armenia’s ‘recovery’, or normalization. In other words, the national-democratic model of Armenia's revival, fully focused on the values of patriotism, democracy and social justice, points to the important role of the new Armenian authorities in their establishment. The implementation model provides a whole system of measures for the improvement of the Armenian society.
TIGRAN ZARGARYAN
PhD in Technical Sciences
HAYKANUSH GHAZARYAN
STATISTICAL INFORMATION DATABASE OF THE ARMENIAN
PERIODICAL PRESS BIBLIOGRAPHIES
The bibliographic lists of the Armenian periodicals are rich in information database, which are presented in periodicals published in 1794, with a detailed bibliography, in places of detention, often in the contents of a journal and, most importantly, with information and statistical component. Based on the auxiliary bibliographic lists, one can obtain statistical information on the number of periodical publications in different countries, cities, periods, and other aspects.
Due to historical, political, demographic and other reasons, there are data from the same periodical, from city to city, from country to country, from continents to continents in the same journal.
The possibilities of modern software applications provide excellent conditions for rapid, high-quality, reliable and multi-disciplinary information about serial publications.
ARMEN SAHAKYAN
Doctor of Sociologocal Scienses, Professor
SYUZANNA YEGHIAZARYAN
YSU, Applicant at the Faculty of Sociology
VALUES OF THE LABOR BEHAVIOR OF MODERN YOUTH
The authors of this scientific article consider an actual problem related to the value of the labor behavior of young people. It is relevant not only for the Russian scientific reality, but also for the Armenian. The authors provide empirical data that clearly show that the values of labor behavior are in constant change.
Summarizing the above mentioned, the authors come to the conclusion that today's youth is well aware of the needs of society and, in particular, the demands of the economic environment.
NADEZHDA POKROVSKAYA
Doctor of Sociological Sciences, Professor
SOCIOLOGICAL ANALYSIS OF MODERNIZATION AS A FACTOR IN THE DEVELOPMENT OF INTELLECTUAL CAPITAL
The study was sponsored by RFBR in the framework of a research project № 16-29-12965 \ 18
The intellectual capital of the country is now seen primarily in economic science.
Socio-economic study of the intellectual potential are focused on the use of human resources to enhance the country's role in the global knowledge economy. Sociological globalization on the development of intellectual capital analysis of industrialization and post-industrialization influence, urbanization and focuses on social processes and structures that are needed for the effective formation of intellectual capital, ranging from the organization of intellectual activity processes, attracting human resources to them, and up to registration systems intellectual property rights, the formation of a market for patents, licenses and other formal intellectual property rights.
Sociological studies of human resources do not provide a sufficient understanding of the consistency and integrity of the influence of social factors and mechanisms on the development of the country's intellectual capital.
In this respect, the article is an attempt to justify the need for the modernization of the sociological approach to the understanding of the processes and tendencies of development of the intellectual capital of the society.
The insufficiency of modern theoretical -conceptual research in the field of analysis and evaluation of intellectual capital is reflected, in particular, in the fact that most of such research is undertaken by economics, within which, even taking into account the institutional direction in the economy, it is not possible to fully determine the mechanisms and factors of formation development of intellectual capital, the bearer of which are individuals. Meanwhile, the value-normative regulation of the attraction and retention of individuals within and Intellectual activity cannot be carried out solely on the basis of economic factors, as noted by economists themselves, referring to economic sociology with questions of the fundamental bases for the development of intellectual capital as the most important characteristic of society.
UDC 373(71)
LORENZO CHERUBINI
Professor of Brock University, St. Catharines
SCHOOL PRACTICES AND EDUCATION POLICY: ABORIGINAL STUDENTS’ CHALLENGES AND SUCCESSES
Summary
The academic success of Aboriginal students remains particularly concerning across Ontario, Canada, the United States and abroad. Less than half of all Aboriginal students in Canada receive a secondary school diploma since they often do not discern meaning in both the provincial curriculum and the priorities of public schools. In the province of Ontario (Canada), the Ministry of Education (OME) 2007 policy document, The Ontario First Nation, Métis and Inuit Education Policy Framework (the Framework) addresses the achievement gap between Aboriginal and non-Aboriginal learners in public education.The Framework points to the epistemological learning preferences of Aboriginal students and aims to make all stakeholders more accountable for the academic success of Aboriginal students․ This study examines the perceptions and experiences of Aboriginal students in northern Ontario publicly-funded schools in the context of the objectives of the OME policy Framework.
The findings of this longitudinal qualitative study include two categories that are described as ‘Schools as Spaces of Socialization’ and ‘Principled Actions and Variability.’
The categories, as the discussion of the paper suggests, bring to light the potential of Aboriginal students to first flourish in the imagination of their individual and collective identity, and second, to undertake the challenges associated to public schooling and thrive in what can be adverse environments.
However, the findings of this study also point to the fact that some Aboriginal students perceive the various injustices of school practices and relations but in most instances, consider themselves as having very limited opportunities to enact change.
Keywords: Aboriginal students, education policy, the achievement gap
ARAIK FIRYAN
Armenian State Pedagogical University after Kh. Abovyan, Applicant
SOCIO-PSYCHOLOGICAL DESCRIPTION OF THE ARMENIANS’ ETHNIC SELF-CONSCIOUSNESS IN ARTSAKH REGION
The article presents the socio-psychological description of the national self-consciousness of Armenians in Artsakh region. Some written evidence is given that describes the characteristics of national identity. Dynamics of national and international perceptions of the current situation in Artsakh and the impact of these perceptions on the development of national self-consciousness of Armenians living in Artsakh are presented. Some factors of manifestation of national self-consciousness in the current Artsakh society are considered.
OLGA CHUPRIS
Doctor of Juridical Sciences, Professor
ADMINISTRATIVE-TORTIOUS SANCTIONS POLICY IN THE CONDITIONS OF ECONOMIC LIBERALIZATION OF THE REPUBLIC OF BELARUS
In a legal state, administrative sanctions are called to execute not only a punitive function, but also to act as a guarantor of recognition, observance and protection of human rights and legal entities.
In order to reach a rational consensus, person’s interests in harmony, society and state the legislator along with the content definition of right determines administrative sanctions and thus the scope of restrictions.
Development of economic relations, changes in the investment climate, promoting business activity requires the business community of liberal legislation in the administrative responsibility, reflecting the merit of the response.
GAYANE POGHOSYAN
PhD in Biological Sciences
ANAHIT GASPARYAN
PhD in Biological Sciences
THE INTRODUCTION OF OPEN AGRARIAN SCHOOL MODEL AS A SOCIO-ECONOMIC, ETHNO-CULTURAL MANIFESTATION OF RURAL COMMUNITIES
The article aims at increasing the education quality and reputation in rural communities.
It reveals the system components of the open agrarian school model. The model enables to preserve the national cultural traditions and values and transmit them to the generations in the rural communities. At the same time, contacts are established between older and younger generations giving the opportunity to create a mutual transfer of knowledge and skills, providing a lifelong education. The article is also in line with the 17 goals of sustainable development included in the UN Sustainable Development Agenda 2030. For the implementation of the “Open Agrarian School" mission objectives, tasks, resources, methods, functions and results have been clarified.
