670 research outputs found

    ΠšΠΎΠ½Ρ†Π΅ΠΏΡ†ΠΈΡ ΠΎΠ±Ρ€Π°Π·ΠΎΠ²Π°Ρ‚Π΅Π»ΡŒΠ½ΠΎΠ³ΠΎ Ρ†ΠΈΠΊΠ»Π°, ΠΎΡ€ΠΈΠ΅Π½Ρ‚ΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ Π½Π° ΠΏΡ€ΠΈΠΎΡ€ΠΈΡ‚Π΅Ρ‚Ρ‹ ΠΈ Ρ†Π΅Π»ΠΈ развития Π² сфСрС образования

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    The educational course had been worked out on the basic items of Model Education peculiarities as conception of lifelong learning with the gradual foreign language cover by the age-grade increase and content complication.ΠŸΡ€Π΅Π΄Π»ΠΎΠΆΠ΅Π½Π½Ρ‹ΠΉ ΠΎΠ±Ρ€Π°Π·ΠΎΠ²Π°Ρ‚Π΅Π»ΡŒΠ½Ρ‹ΠΉ Ρ†ΠΈΠΊΠ» ΠΎΡ‚Π²Π΅Ρ‡Π°Π΅Ρ‚ всСм трСбованиям ΠΌΠΎΠ΄ΡƒΠ»ΡŒΠ½ΠΎΠ³ΠΎ образования Π² ΠΊΠΎΠ½Ρ†Π΅ΠΏΡ†ΠΈΠΈ «обучСния Π² Ρ‚Π΅Ρ‡Π΅Π½ΠΈΠ΅ всСй ΠΆΠΈΠ·Π½ΠΈΒ». ΠŸΡ€Π΅Π΄ΠΏΠΎΠ»Π°Π³Π°Π΅Ρ‚ ΠΏΠ°Ρ€Π°Π»Π»Π΅Π»ΡŒΠ½ΠΎΠ΅ ΠΈΠ·ΡƒΡ‡Π΅Π½ΠΈΠ΅ иностранного языка с постСпСнным ΠΏΠΎΠ³Ρ€ΡƒΠΆΠ΅Π½ΠΈΠ΅ΠΌ Π² ΠΈΠ½ΠΎΡΠ·Ρ‹Ρ‡Π½ΡƒΡŽ срСду ΠΏΠΎ возрастным катСгориям ΠΈ ΠΏΠΎ ΠΌΠ΅Ρ€Π΅ услоТнСния курса

    Population dynamics of wild reindeer (Rangifer tarandus L.) on the Taimyr Peninsula: A simulation model

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    A simulation model, based on original and published data, has been developed to determine the period and amplitude of natural population cycles of wild reindeer on the Taimyr Peninsula and reveal the role of hunting in these cycles. The results of simulations show that hunting in the late 20th century has smoothed out the cycles. Considering natural factors of population regulation, uncontrolled elimination of part of the population by hunting should maintain the average long-term abundance at a level lower than potentially possible under natural dynamics, leading to negative ecological and economic consequences. Β© 2013 Pleiades Publishing, Ltd

    Thermal stability of a laser-clad NiCrBSi coating hardened by frictional finishing

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    Frictional treatment decreases surface roughness of a NiCrBSi laser coating and increases its microhardness and abrasive wear resistance. Even after softening annealing at 900 Β°C, the coating subjected to frictional treatment preserves its advantage in hardness and wear resistance over the original clad coating. Annealing at 1000 Β°C after frictional treatment ensures less effective growth of the hardness and wear resistance of the coating as compared to annealing of the undeformed coating due to the limited precipitation of large Cr23C6 carbides on the deformed surface, which form a wear-resistant framework. Β© 2017 Author(s).Russian Foundation for Basic Research,Β RFBR: 16-38-00452-mol-a01201375904108692015Federal Agency for Scientific Organizations: 01201463331Federal Agency for Scientific OrganizationsUral Branch, Russian Academy of Sciences,Β UB RAS: 15-9-12-45The study was financially supported by the Russian Foundation for Basic Research (RFBR), grant No. 16-38-00452-mol-a, by the Foundation for Assistance to Small Innovative Enterprises (FASIE), project UMNIK No. 108692015; the work was done within the Complex Program of UB RAS, project No. 15-9-12-45, within the state order for IES UB RAS, No. 01201375904 and within the state order of The Federal Agency for Scientific Organizations (FASO Russia) on the subject β€œStructure”, No. 01201463331. The experimental research was done on the equipment installed at the Plastometriya Collective Use Center of IES UB RAS

    On the modeling of water obstacles overcoming by Rangifer tarandus L

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    Seasonal migrations and herd instinct are traditionally recognized as wild reindeer (Rangifer tarandus L.) species-specific behavioral signs. These animals are forced to overcome water obstacles during the migrations. Behaviour peculiarities are considered as the result of the selection process, which has chosen among the sets of strategies, as the only evolutionarily stable one, determining the reproduction and biological survival of wild reindeer as a species. Natural processes in the Taimyr population wild reindeer are currently occurring against the background of an increase in the influence of negative factors due to the escalation of the industrial development of the Arctic. That is why the need to identify the ethological features of these animals completely arose. This paper presents the results of applying the classical methods of the theory of optimal control and differential games to the wild reindeer study of the migration patterns in overcoming water barriers, including major rivers. Based on these animals' ethological features and behavior forms, the herd is presented as a controlled dynamic system, which presents also two classes of individuals: the leader and the rest of the herd, for which their models, describing the trajectories of their movement, are constructed. The models are based on hypotheses, which are the mathematical formalization of some animal behavior patterns. This approach made it possible to find the trajectory of the important one using the methods of the optimal control theory, and in constructing the trajectories of other individuals, apply the principle of control with a guide. Approbation of the obtained results, which can be used in the formation of a common "platform" for the adaptive behavior models systematic construction and as a reserve for the cognitive evolution models fundamental development, is numerically carried out using a model example with observational data on the Werchnyaya Taimyra River. Β© 2019 Natalia V. Malygina, Platon G. Surkov

    The influence of temperament and character to preserve the mental health of young athletes

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    The article discusses the psychodynamic features of the behavior of young athletes, which integrate in temperament and character, health saving technologies in the competitive period, and their impact on the mental health of young athletes involved in track and field all-aroundΠ’ ΡΡ‚Π°Ρ‚ΡŒΠ΅ Ρ€Π°ΡΡΠΌΠ°Ρ‚Ρ€ΠΈΠ²Π°ΡŽΡ‚ΡΡ психодинамичСскиС особСнности повСдСния ΡŽΠ½Ρ‹Ρ… спортсмСнов, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Π΅ ΠΈΠ½Ρ‚Π΅Π³Ρ€ΠΈΡ€ΡƒΡŽΡ‚ Π² Ρ‚Π΅ΠΌΠΏΠ΅Ρ€Π°ΠΌΠ΅Π½Ρ‚ ΠΈ Ρ…Π°Ρ€Π°ΠΊΡ‚Π΅Ρ€, Π·Π΄ΠΎΡ€ΠΎΠ²ΡŒΠ΅ ΡΠ±Π΅Ρ€Π΅Π³Π°ΡŽΡ‰ΠΈΠ΅ Ρ‚Π΅Ρ…Π½ΠΎΠ»ΠΎΠ³ΠΈΠΈ, примСняСмыС Π² ΡΠΎΡ€Π΅Π²Π½ΠΎΠ²Π°Ρ‚Π΅Π»ΡŒΠ½Ρ‹ΠΉ ΠΏΠ΅Ρ€ΠΈΠΎΠ΄, ΠΈ ΠΈΡ… влияниС Π½Π° психичСскоС Π·Π΄ΠΎΡ€ΠΎΠ²ΡŒΠ΅ ΡŽΠ½Ρ‹Ρ… спортсмСнов Π·Π°Π½ΠΈΠΌΠ°ΡŽΡ‰ΠΈΡ…ΡΡ лСгкоатлСтичСским ΠΌΠ½ΠΎΠ³ΠΎΠ±ΠΎΡ€ΡŒΠ΅

    Effect of frictional treatment on the microstructure and surface properties of low-carbon steel

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    The microstructure of annealed low-carbon (0.17 wt% C) steel subjected to frictional treatment with a sliding hard-alloy indenter is studied by EBSD analysis, as well as its micromechanical characteristics. It has been found that frictional treatment results in high dispersity of the structure in the steel surface, down to the submicro- and nanocrystalline state. Instrumented microindentation has revealed that, under all the loads, the values of the contact elastic modulus E βˆ— of low-carbon (0.17 wt% C) steel after frictional treatment are lower than those in the initial annealed state. Particularly, the mean value of E βˆ— decreases from 208 to 168 GPa under a load of 1 gf on the indenter, from 213 to 176 GPa under a load of 25 gf and from 204 to 155 GPa under a load of 200 gf. It is for the first time that the effect of a decrease in the elastic modulus is observed for a carbon steel subjected to frictional treatment. It also follows from the microindentation data that frictional treatment increases the capability of the surface of annealed low-carbon (0.17 wt% C) steel to withstand higher contact loads prior to plastic deformation. Β© 2018 Author(s)

    Increasing the resistance of a NiCrBSi coating to heat wear by means of combined laser heat treatment

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    Testing of NiCrBSi coatings formed by gas-powder laser cladding and combined laser heat treatment, including laser cladding and high-temperature annealing, were conducted under conditions of sliding friction on the Kh12M steel according to the pin-on-disk scheme. The combined processing resulting in the formation of large carbides and chromium borides in the coatings is shown to increase their wear resistance by a factor of 1.8 at sliding velocities of 6.1 and 9.3 m/s, when there is significant frictional heating of the friction surfaces. Β© 2018 Author(s)

    АдаптивныС измСнСния сСзонных ΠΌΠΈΠ³Ρ€Π°Ρ†ΠΈΠΉ Π΄ΠΈΠΊΠΈΡ… сСвСрных ΠΎΠ»Π΅Π½Π΅ΠΉ Π½Π° Π’Π°ΠΉΠΌΡ‹Ρ€Π΅

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    As the largest in the world the Taimyr population of wild reindeer displays pronounced seasonal migrations from forest zone to tundra for fawning in spring and return motion in fall. These motions are characterized with dynamics varying from year to year. Evidences of experience suggest that migration course cannot yet be interrupted or curtailed with artificial constructions or anthropogenic disturbance. By results of long-term observations carried out by one of the authors during 20 years, migration timing and speed were related to current ambient temperature and varied from year to year. As foreseen temperature rise happens more intensively inArcticthan upon an average through the Planet and is higher overland than it is over ocean it must apparently exert influence on the pattern of reindeer migrations. We hold that this phenomenon consists with changes in migration activity for recent decades and manifests increasing all-year-round separate reindeer groups presence in tundra. Some of these groups are registered and presented on the skeleton map. In the light of current climatic trend the ecological mechanism of migrations decrease should be grounded on reindeer bioenergetics and derived from ecological function of their migrations. Energy expenditures for far movements are getting less appropriate and the proportion of total heads staying in tundra zone all-year-round will increase. Available bioenergetics parameters and the simple model let to make a prediction. In the end we propose some preventive conservation arrangements to secure the mass heads of wild reindeer staying in tundra against adverse factors, mainly pending anthropogenic.ΠžΠ±ΠΈΡ‚Π°ΡŽΡ‰Π°Ρ Π½Π° Π’Π°ΠΉΠΌΡ‹Ρ€Π΅ популяция Π΄ΠΈΠΊΠΈΡ… сСвСрных ΠΎΠ»Π΅Π½Π΅ΠΉ характСризуСтся Ρ‡Π΅Ρ‚ΠΊΠΎ Π²Ρ‹Ρ€Π°ΠΆΠ΅Π½Π½Ρ‹ΠΌΠΈ сСзонными миграциями, Π΄ΠΈΠ½Π°ΠΌΠΈΠΊΠ° ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Ρ… Π²Π°Ρ€ΡŒΠΈΡ€ΡƒΠ΅Ρ‚ ΠΎΡ‚ Π³ΠΎΠ΄Π° ΠΊ Π³ΠΎΠ΄Ρƒ. На основС ΠΌΠ½ΠΎΠ³ΠΎΠ»Π΅Ρ‚Π½ΠΈΡ… ΠΏΠΎΠ»Π΅Π²Ρ‹Ρ… наблюдСний ΠΏΠΎΠΊΠ°Π·Π°Π½Π° Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡ‚ΡŒ Π½Π°Ρ‡Π°Π»ΡŒΠ½ΠΎΠ³ΠΎ Π²Ρ€Π΅ΠΌΠ΅Π½ΠΈ ΠΈ скорости сСзонных ΠΌΠΈΠ³Ρ€Π°Ρ†ΠΈΠΉ ΠΎΡ‚ Ρ‚Π΅ΠΊΡƒΡ‰Π΅ΠΉ ΠΏΡ€ΠΈΠ·Π΅ΠΌΠ½ΠΎΠΉ Ρ‚Π΅ΠΌΠΏΠ΅Ρ€Π°Ρ‚ΡƒΡ€Ρ‹ Π²ΠΎΠ·Π΄ΡƒΡ…Π°. РассмотрСно влияниС Π½Π° ΠΌΠΈΠ³Ρ€Π°Ρ†ΠΈΠΈ ΠΏΡ€ΠΎΠ³Π½ΠΎΠ·ΠΈΡ€ΡƒΠ΅ΠΌΡ‹Ρ… климатичСских ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΠΉ, приводится картосхСма ΠΎΡ‚ΠΌΠ΅Ρ‡Π°Π΅ΠΌΡ‹Ρ… ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΠΉ Π² ΠΌΠΈΠ³Ρ€Π°Ρ†ΠΈΠΎΠ½Π½ΠΎΠΉ активности популяции Π·Π° послСдниС дСсятилСтия. Π’ свСтС наблюдаСмой Ρ‚Π΅Π½Π΄Π΅Π½Ρ†ΠΈΠΈ обоснованы экологичСскиС ΠΏΡ€ΠΈΡ‡ΠΈΠ½Ρ‹ сокращСния ΠΌΠΈΠ³Ρ€Π°Ρ†ΠΈΠΉ ΠΎΠ»Π΅Π½Π΅ΠΉ с ΠΏΠΎΠ·ΠΈΡ†ΠΈΠΉ биоэнСргСтики. ΠŸΡ€Π΅Π΄Π»Π°Π³Π°ΡŽΡ‚ΡΡ ΠΏΡ€Π΅Π²Π΅Π½Ρ‚ΠΈΠ²Π½Ρ‹Π΅ ΠΏΡ€ΠΈΡ€ΠΎΠ΄ΠΎΠΎΡ…Ρ€Π°Π½Π½Ρ‹Π΅ ΠΌΠ΅Ρ€Ρ‹, ΠΏΡ€ΠΈΠ·Π²Π°Π½Π½Ρ‹Π΅ ΠΎΠ±Π΅Π·ΠΎΠΏΠ°ΡΠΈΡ‚ΡŒ поголовьС ΠΎΠ»Π΅Π½Π΅ΠΉ Π² Ρ‚ΡƒΠ½Π΄Ρ€ΠΎΠ²ΠΎΠΉ Π·ΠΎΠ½Π΅ ΠΎΡ‚ нСблагоприятных, ΠΏΡ€Π΅ΠΆΠ΄Π΅ всСго Π°Π½Ρ‚Ρ€ΠΎΠΏΠΎΠ³Π΅Π½Π½Ρ‹Ρ… Ρ„Π°ΠΊΡ‚ΠΎΡ€ΠΎΠ²

    ΠžΡΠΎΠ±Π»ΠΈΠ²ΠΎΡΡ‚Ρ– явища Ρ–ΠΌΡƒΠ½ΠΎΠ΄Π΅Ρ„Ρ–Ρ†ΠΈΡ‚Ρƒ Π² стійкості ΠΎΠ·ΠΈΠΌΠΎΡ— ΠΏΡˆΠ΅Π½ΠΈΡ†Ρ– Π΄ΠΎ ΡˆΠΊΡ–Π΄Π½ΠΈΠΊΡ–Π²

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    Decrease in a winter wheat immunity to pests owing to various mutations, which caused by application of insecticide Bi–58 (new), is established.УстановлСно сниТСниС ΠΈΠΌΠΌΡƒΠ½ΠΈΡ‚Π΅Ρ‚Π° растСний ΠΎΠ·ΠΈΠΌΠΎΠΉ ΠΏΡˆΠ΅Π½ΠΈΡ†Ρ‹ ΠΊ врСдитСлям вслСдствиС Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… ΠΌΡƒΡ‚Π°Ρ†ΠΈΠΉ, Π²Ρ‹Π·Π²Π°Π½Π½Ρ‹Ρ… использованиСм инсСктицида Π‘ΠΈ-58 (Π½ΠΎΠ²Ρ‹ΠΉ).ВстановлСно зниТСння Ρ–ΠΌΡƒΠ½Ρ–Ρ‚Π΅Ρ‚Ρƒ рослин ΠΎΠ·ΠΈΠΌΠΎΡ— ΠΏΡˆΠ΅Π½ΠΈΡ†Ρ– Π΄ΠΎ ΡˆΠΊΡ–Π΄Π½ΠΈΠΊΡ–Π² внаслідок Ρ€Ρ–Π·Π½ΠΈΡ… ΠΌΡƒΡ‚Π°Ρ†Ρ–ΠΉ, Π²ΠΈΠΊΠ»ΠΈΠΊΠ°Π½ΠΈΡ… використанням інсСктициду Π‘Ρ–-58 (Π½ΠΎΠ²ΠΈΠΉ)
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