359 research outputs found
Spark Plasma Sintering of Boron Carbide Powder
The results presented in this article demonstrate that boron carbide ceramics of a perfect microstructure, of a high density (up to 99.8%) and microhardness (36.1 GPa) can be made from the industrial micron fraction powder thanks to spark plasma sintering, that opens prospects for wide SPS application in economical production of high-quality boron carbide ceramic products. Optimal ceramics production mode is based on B4C (technical powder), which makes the best combination of physical and mechanical properties and uniformmicrostructure. The experimentally set mode of spark-plasma sintering of highdensity B4C ceramics allows to lower the sintering temperature by 300 ∘C and to shorten the process time by 20 minutes relative to the corresponding values when traditional hot pressing.
Keywords: spark - plasma sintering, boron carbide, densit
The acoustic model of oscillations of gas combustion in coaxial pipes
© Published under licence by IOP Publishing Ltd. Organization of pulse combustion mode is one of the possible solutions to the problem of energy efficiency installations using hydrocarbon fuel. For grate combustion of solid fuels, in particular, solid industrial wastes are considered to be promising coaxial system, allowing the admission of secondary air to the combustion zone. In this paper we proposed an acoustic model of oscillations of gas when burning solid fuel in the system is coaxially arranged pipes with natural air supply. The description of the motion of the gas in the system during one period of oscillation
Personalized patterns of teachers training in document science course subjects in a vocational pedagogical university
The article is focused on the study of challenging issues which occur when updating methodological-pedagogical support and applying personalized educational paths in the training of future teachers of document science course subjects for intermediate vocational education institutions, as well as according to various other programmes of students training as part of the "Vocational training (by branches)" course. The key method of the given problem research is meant to be analysis and experience summarization of vocational-oriented, academic, teaching and guiding and scientific work with the students of Russian State Vocational Pedagogical University, being taught according to principal educational programme "Document management in an organization" as part of "Vocational training (by branches)" preparation as well as learning methodological approaches for creating personalized educational paths for them. Research results: developed approaches to applying personalized educational paths in the training of students in a vocational pedagogical university; drawn-up recommendations on updating methodological-pedagogical support in the training of future teachers of document science course subjects for intermediate vocational education institutions, undertaken analysis of the possible ways of improving their training. The content of the article may prove helpful for: university faculty and universities chief executives for the improvement of the training quality of future professionals, for more effective educational process organization, for forming personalized educational paths in the training of students; for chief executives of intermediate vocational education institutions where the specialized training "Document support of management and archive science" is provided; for students being trained as part of "Vocational training (by branches)" course. © Authors
PEDAGOGICAL POTENTIAL OF PROVERBS AS TRADITIONAL RULES OF HEALTHY LIFESTYLE IN FOREIGN LANGUAGE TEACHING
Proverbs contain precious experience gathered and selected by many generations in short and vivid linguistic
form, thus preserving cultural values and mentality of different nations. Health is the key value of any world culture.
The purpose of the article is to analyze pedagogical potential of proverbs about health in teaching healthy lifestyle
in foreign language classes. Research methods are analysis, system approach, generalization, inter-disciplinary
approach.
The authors divided proverbs about health into the following groups: 1. proverbs about environmental factors
influence on human health; 2. physical activity, sport; 3. daily routine and hygiene; 4. healthy eating; 5. importance of
work; 6. optimism, positive attitude to life.
Discussing proverbs about health with students in English classes develops their lingua-cultural competence, and
makes a valuable contribution into the health of future generations
Impact of International Sporting Events on the Economy: Foreign Experience
The contribution of sporting mega-events to the growth of the host economy remains an open question in the academic and expert communities. Their preparation requires enormous investments in the construction and modernization of infrastructure, as well as trade development and tourism expansion. Theoretically, this may seem to be fertile ground for economic growth and high investment performance. However, in practice, major sporting events, as a rule, induce budget overruns and huge debt of the host country; investment strategies are rarely successful; and financial expectations from such events are overestimated. This article is devoted to the comparative analysis of foreign and Russian experience in the implementation of sports mega-events. This research helps to systematize the effects of such events for the socioeconomic development of the country
Training practice as a modern tool of formation competitive specialist
The article notes that the modern quality of training, laid down in the standards of the new generation, focuses on the practical orientation of training, the joint use of the material and technical base of the educational organization and the enterprise as a future employer of graduatesВ статье отмечается, что современное качество подготовки специалистов, заложенное в стандартах нового поколения, ориентирует на практическую направленность обучения, совместное использование материально-технической базы образовательной организации и предприятия, как будущего работодателя выпускников. среды, стимулирующей процессы профессионального развити
Improvement of organizational conditions for the development of teaching staff in the average professional education
Due to modernization of Russian education, in modern society the status and function of the teacher are radically changing. It leads the process of approving of new qualification requirements. The article describes the experience of Nizhny Tagil College metalworking industries and service on this problemВ связи с модернизацией российского образования в современном обществе радикально меняются статус педагога, его функции, требования к профессиональным и личным качествам, что ведет за собой процесс утверждения новых квалификационных требований. В статье представлен опыт Нижнетагильского техникума ме-таллообрабатывающих производств и сервиса по рассматриваемой проблем
Estimation of factors and projected growth of the metallurgical branch of Russia under unstable market conditions
The results of the performed analysis of the development indexes of the Russian metallurgical industry, the production dynamics and export tendencies of the largest exporters were represented. The estimation of the specific factors of price formation in the market of steel products of the Russian Federation, the record of the growth of prices for ore and coal in the world, together with the analysis of the main financial values of the activity of the largest metallurgical companies allowed calculating the projected indexes basing upon their activity for 2017-2018. On the base of these projected indexes of the companies’ activity and worldwide trends of demand for steel products, the estimations of the products demand were given taking into account the determining factors of the branch development
Septoriablotch epidemic process on spring wheat varieties
The Septoriablotch of spring wheat leaves and ears is one of the most economically significant infections in the Siberian region. In the control systems of Septoriablotch the main ecologically safe element is resistant varieties, which are designed to slow down the pathogens reproduction rate and slow down or stop the development of the epiphytotic process. The purpose of the work was to clarify the species composition of Septoriablotch pathogens for West Siberian regions and spring wheat varieties, to study the epiphytotic process of Septoriadifferentially on the leaves and ears of varieties, and to evaluate the activity of seed transmission of Parastagonospora nodorum. Studies were carried out in 2016–2018 according to generally accepted methods. Septorialeaf and ear blotch of spring wheat is widespread in West Siberia and the Trans-Urals, causing a decrease in yield by up to 50 % or more with the deterioration in grain quality. The causative agents of the disease are P. nodorum, Septoria tritici, and P. avenaef. sp. triticae, and the species ratio varied across the regions and varieties, and within plant organs. In Novosibirsk Region, P. nodorumcompletely dominated; S. triticiwas 13.8 times less common; and P. avenae f. sp. triticaewas a singleton. In Tyumen Region, the dominance of P. nodorumwas disrupted in some geographic locations by S. triticiand P. avenaef. sp. triticae. In Altai Krai, P. nodorumpredominated at all points studied; S. tritici and P. avenaef. sp. triticaewere found everywhere, but 5.6 and 8.6 times less often, respectively. The study of spring wheat varieties of different origins has not revealed any samples immune to Septoriablotch. A differen tiated manifestation of resistance to Septorialeaf and ear disease has been established. Some varieties show complex resistance, combining reduced susceptibility to Septorialeaf and ear disease. Seed infection with P. nodorumin the regions of Siberia reached 7 thresholds and was largely (52.5 %) determined by the August weather conditions. The study of the collection of spring wheat varieties from three Siberian regions has revealed the following trend. Transmission of P. nodorumwith the seeds of varieties was the most active (7.6 %) in Novosibirsk Region and somewhat weaker in Omsk Region (5.7 %). The most favorable phytosanitary situation was in Kurgan Region, where varieties transmitted P. nodorumto a low degree (2.1 %), below the threshold
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