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Количество страниц: 5 с.
The purpose of the study is to identify the priorities of physical activity, previous experience of classes and motives for attending physical education and health classes in men aged 40-60 who lead a sedentary lifestyle. The objectives of the study are conduct a survey in order to identify the priorities of physical activity, previous experience of classes and motives for attending physical education and health classes in men aged 40-60 who lead a sedentary lifestyle. The hypothesis of the study is as follows: identification of the priorities of physical activity, previous experience of classes and motives for attending sports and recreation classes will determine the starting positions for developing a program of sports and recreation classes with elements of martial arts for men aged 40-60 years who lead a sedentary lifestyle. The research methods are analysis of scientific and methodological literature, questioning, survey, conversations. The results are as follows: the answers received to the proposed seven questions made it possible to identify the initial positions for the development of a program of physical culture and recreation classes with elements of martial arts for men aged 40-60 years who lead a sedentary lifestyle.
Выявление приоритетов двигательной активности на занятиях оздоровительной направленности мужчин 40-60 лет, ведущих малоподвижный образ жизни / Хуан П., Черкашин И. А., Черкашина Е. В. [и др.] ; Московская государственная академия физической культуры, Северо-Восточный федеральный университет им. М. К. Аммосова, Чурапчинский государственный институт физической культуры и спорта // Глобальный научный потенциал. - 2022. - N 3 (132). - С. 131-135.
Количество страниц: 4 с.
This article deals with the rehabilitation of students of the preparatory medical group of the university in physical education classes using folk games and exercises of the indigenous peoples of Yakutia. The aim of this study was to identify the role of games and exercises of the indigenous peoples of Yakutia in promoting the health of students in modern pandemic conditions. The following research methods were used: analysis of literary sources on the topic of scientific work, analysis of specialists in the field of medicine on the studied topic, analysis of the results of the study. To achieve this goal, the following research objectives were set: to study scientific and methodological literature on the topic of research; to investigate the impact of folk games and exercises of the indigenous peoples of Yakutia on the health promotion of students in isolation. The research hypothesis is as follows: the process of raising a healthy lifestyle of students will be effective if national games and exercises are introduced into the educational and educational process. The results of the pedagogical experiment confirmed the effectiveness of the developed technique of physical education of students. Traditional exercises and games of the indigenous peoples of Yakutia contribute to the preservation and improvement of the health and physical fitness of students.
Воспитание здорового образа жизни обучающихся с использованием народных игр и упражнений коренных народов Якутии / Борохин М. И., Олесов Н. П., Чэ С., [и др.] ; Северо-Восточный федеральный университет им. М. К. Аммосова, Арктический государственный агротехнологический университет // Глобальный научный потенциал. - 2022. - N 2 (131). - С. 18-21.
Издательство: Дани-Алмас
Год выпуска: 2022
Количество страниц: 112 с.
Издательство: Стандарт
Год выпуска: 2015
Количество страниц: 252 с.
Количество страниц: 6 с.
- Прикладные науки. Медицина. Ветеринария. Техника. Сельское хозяйство > Инженерное дело. Техника в целом > Строительство подземных сооружений. Земляные работы,
- Математика. Естественные науки > Общая геология . Метеорология. Климатология. Историческая геология. Стратиграфия. Палеогеография,
- НАУКА ЯКУТИИ > ПРИКЛАДНЫЕ НАУКИ. МЕДИЦИНА. ТЕХНИКА. СЕЛЬСКОЕ ХОЗЯЙСТВО > Инженерное дело. Техника в целом > Строительство подземных сооружений. Земляные работы,
- НАУКА ЯКУТИИ > МАТЕМАТИКА. ЕСТЕСТВЕННЫЕ НАУКИ > Геология. Геологические и геофизические науки.
The large amount of peaty soils on the territory of the Russian Federation, especially in the Arctic zone, necessitates the study of their temperature regime and thermophysical properties. The paper presents the results of an experimental study of the thermal conductivity and amount of unfrozen water in sandy soils with varying degrees of peat content. Experiments were carried out on samples with a damaged structure, which were represented by slightly decomposed peat, medium-grained river sand and their various mixtures. It has been established that the degree of peat content affects such physical values as porosity, thermal conductivity and the amount of unfrozen water. For thawed peaty sandy soils, as the degree of peat content increases, the porosity value increases. For both thawed and frozen peaty sand soils, thermal conductivity decreases with increasing degree of peat content. Moreover, the thermal conductivity for frozen soils are higher than for thawed soils. The amount of unfrozen water also depends on the degree of peat in the soil and decreases as it increases. The measured thermophysical properties of peaty sand soil can be used to model the temperature regime in the area of frozen and thawed peat soils.
Теплофизические свойства торфов и заторфованных песчаных грунтов / Протодьяконова Н. А., Степанов А. В., Тимофеев А. М. [и др.] ; Институт физико-технических проблем Севера им. В. П. Ларионова // Успехи современного естествознания. - 2024. - N 1. - С. 52-57. - DOI: 10.17513/use.38207
DOI: 10.17513/use.38207
Количество страниц: 5 с.
- Прикладные науки. Медицина. Ветеринария. Техника. Сельское хозяйство > Инженерное дело. Техника в целом > Горное дело. Горные предприятия (рудники, шахты, карьеры),
- НАУКА ЯКУТИИ > ПРИКЛАДНЫЕ НАУКИ. МЕДИЦИНА. ТЕХНИКА. СЕЛЬСКОЕ ХОЗЯЙСТВО > Инженерное дело. Техника в целом > Горное дело. Горные предприятия (рудники, шахты, карьеры).
The article is devoted to the study of the effects of cryogenic treatment on the hydrophobic and hydrophilic properties of clay sands in order to increase the efficiency of their disintegration and enrichment processes. Experiments have shown that cryogenic treatment leads to selective destruction of dispersed formations, where processes occur that precede the process of disintegration, in which the weakest mechanical bonds are broken, and at the same time passivation of surface energy occurs, which is proved by experimental studies to establish the phenomenon of hydrophobization of the surface of finely dispersed mineral particles. The mechanism of this process is due to complex cyclic phenomena of cryogenic treatment, such as crystallization and recrystallization of water in microcracks and pores of dispersed particles. As a result of the cumulative effect, new pores and spaces are formed inside the conglomerates, which, upon subsequent freezing, forms a new ice structure that contributes to the rupture of the conglomerate. An important factor in the efficiency of cryoprocessing is the pre-saturation of samples with water, which gives the disintegration a volumetric character. The research methodology included the use of a new method of direct flotation without collectors, which makes it possible to assess the hydrophobicity of particles. The experiments were carried out on a laboratory flotation machine using a foaming agent to intensify the flotation process. Samples with a certain initial humidity were cryogenically processed using freeze-thaw cycles. The yield of the foam product was studied depending on the number of cycles and the use of the foaming agent. Studies have revealed stable dynamics of the hydrophobization process, with an increase in the disintegration effect from cycle to cycle. Cryogenic treatment, by breaking the bonds between the particles and opening the pores, allows air bubbles to fix on the surface of the particles, enhancing the process of disintegration in the water-air environment. The phenomenon of hydrophobization during cryogenic treatment explains the high disintegration effect of high-clay sands in the water-air environment. The work was carried out within the framework of the state assignment of the Ministry of Science and Higher Education of the Russian Federation (topic No. 0297-2021-0022, Unified state information system for recording the results of research and development work No. 122011800089-2) using the equipment of the Center for Collective Use of the Federal research center ҺYakut Scientific Center of the Siberian Branch of the Russian Academy of Sciencesһ (grant No. 13.TSKP.21.0016).
Ширман, Г. В. Гидрофобизация поверхности минеральных форм глинистых песков при криогенной обработке: механизм и последствия в области дезинтеграции и обогащения / Ширман Г. В. ; Институт горного дела Севера им. Н. В. Черского // Успехи современного естествознания. - 2023. - N 12. - С. 230-234. - DOI: 10.17513/use.38197
DOI: 10.17513/use.38197
Количество страниц: 6 с.
- Прикладные науки. Медицина. Ветеринария. Техника. Сельское хозяйство > Инженерное дело. Техника в целом > Горное дело. Горные предприятия (рудники, шахты, карьеры),
- НАУКА ЯКУТИИ > ПРИКЛАДНЫЕ НАУКИ. МЕДИЦИНА. ТЕХНИКА. СЕЛЬСКОЕ ХОЗЯЙСТВО > Инженерное дело. Техника в целом > Горное дело. Горные предприятия (рудники, шахты, карьеры).
For the effective enrichment of gold-containing concentrates and heavy concentrate with a high content of magnetic minerals, a beneficiation method in a jigging machine with a magnetic system has been proposed in the laboratory of the Laboratory mineral processing of the Institute of Mining of the North SB RAS. In the proposed method, a combination of gravitational enrichment and magnetic separation is carried out in a jigging machine. The most important factor in the process of effective extraction of gold from concentrate enrichment products containing iron scrap and minerals with high magnetic susceptibility in a jigging machine is the constant loosening of the forming natural bed. Subsequently, the method was improved and an electric pulse source was developed to create a pole-alternating magnetic field, which makes it possible to ensure a loosened state of the bed. A physical and mathematical model has been developed based on a Fokker - Planck type equation to determine the probability of particles passing through the thickness of a bed under the condition of the required state of loosening. Approbation of the model shows that the obtained calculations correlate with the results of experiments on a jigger with an electromagnetic installation under the conditions of the jiggering process: jigger cycle frequency 210 min-1, bed height 80 mm, amplitude 6 mm and pulse duration of the pole-alternating magnetic field from 0,1 sec. The work was carried out within the framework of the state assignment of the Ministry of Science and Higher Education of the Russian Federation (topic No. 0297-2021-0022, Unified state information system for recording the results of research and development work No. 122011800089-2) using the equipment of the Center for Collective Use of the Federal research center ҺYakut Scientific Center of the Siberian Branch of the Russian Academy of Sciencesһ (grant No. 13.TSKP.21.0016).
Слепцова, Е. С. Физико-математическая модель проницаемости тяжелых частиц через магнитную постель отсадочной машины с полюс опеременным магнитным полем / Слепцова Е. С., Яковлев Б. В., Матвеев А. И. ; Институт горного дела Севера им. Н. В. Черского // Успехи современного естествознания. - 2023. - N 12. - С. 218-223. - DOI: 10.17513/use.38195
DOI: 10.17513/use.38195
Количество страниц: 6 с.
- Прикладные науки. Медицина. Ветеринария. Техника. Сельское хозяйство > Инженерное дело. Техника в целом > Строительство подземных сооружений. Земляные работы,
- НАУКА ЯКУТИИ > ПРИКЛАДНЫЕ НАУКИ. МЕДИЦИНА. ТЕХНИКА. СЕЛЬСКОЕ ХОЗЯЙСТВО > Строительство. Строительные материалы. Строительно-монтажные работы.
The study is aimed at solving the urgent problem of stabilizing the temperature regime of construction sites and operation of engineering structures in the permafrost zone of the Republic of Sakha (Yakutia) and a changing climate. The currently used method of soil cooling using seasonally operating cooling devices, despite its effectiveness, requires a long exposure time and significantly delays construction time, which in some cases is unacceptable. In order to evaluate the effectiveness and prospects of the technology of rapid soil freezing using solid carbon dioxide (dry ice) for cooling permafrost soils, a full-scale experiment was carried out. To conduct the experiment, a test site was equipped at one of the construction sites in Yakutsk with the installation of cooling and thermometric wells. During the experiment, the temperature field of the soil and the temperature inside the cooling well were recorded. As a result of the experiments, actual data were obtained on the distribution of temperature in the soil depending on the temperature and distance from the cooling well during the cooling effect and after it. The results obtained provide grounds for assessing the tested technology as promising in the conditions of permafrost soils in Yakutia.
Экспериментальные исследования процесса охлаждения грунта с применением твердого диоксида углерода в условиях криолитозоны Якутии / Большев К. Н., Степанов А. В., Малышев А. В. [и др.] ; Институт физико-технических проблем Севера им. В. П. Ларионова, Якутский государственный проектный научно-исследовательский институт строительства // Успехи современного естествознания. - 2023. - N 12. - С. 204-209. - DOI: 10.17513/use.38193
DOI: 10.17513/use.38193
Количество страниц: 6 с.
- Прикладные науки. Медицина. Ветеринария. Техника. Сельское хозяйство > Инженерное дело. Техника в целом > Горное дело. Горные предприятия (рудники, шахты, карьеры),
- НАУКА ЯКУТИИ > ПРИКЛАДНЫЕ НАУКИ. МЕДИЦИНА. ТЕХНИКА. СЕЛЬСКОЕ ХОЗЯЙСТВО > Инженерное дело. Техника в целом > Горное дело. Горные предприятия (рудники, шахты, карьеры).
The results of experimental studies to identify changes in the aerodynamic properties of particles of a malleable useful component (gold) during the disintegration process on a fundamentally new laboratory two-stage cone impact mill are presented. Lead markers of various configurations, as well as random particles of ore gold, act as gold simulators. This mill is designed specifically for the chain of dry concentration devices. The mill includes two zones of destruction of geomaterials. The upper elongated cone-shaped zone formed between the working rotor and the inner surface of the installation housing. Due to the narrowing of the space between the working surfaces, close contact of ore particles is created with each other and with the working bodies. In the lower sequential zone, in the zone of free movement of particles by rolling along the surface of the external working rotor, intensive forging of lamellar particles of the useful component of the ore occurs by the flow of pelitic ore material formed during the destruction process in the upper zone of the mill. In the process of conducting laboratory research on the particles of the useful component, a close analogy was discovered in the properties of their behavior in an aerodynamic and liquid environment. The soaring speed (SV) of gold particles less than 2 mm, with the same physical parameters, as well as their hydraulic size (HF), depends only on the thickness. At the same time, in the mill during the grinding process, the particles of ore gold undergo thickening of the edges. Processed particles of lead markers and gold retain their physical weight, and their degree of extraction by dry enrichment increases by 1.5-2 times due to isometrization of forms. The work was carried out within the framework of the state assignment of the Ministry of Science and Higher Education of the Russian Federation (topic No. 0297-2021-0022 of the unified state information system for recording research, development and technological work for civil purposes No. 122011800089-2) using the equipment of the Center for Collective Use of the Federal research center ҺYakut Scientific Center of the Siberian Branch of the Russian Academy of Sciencesһ, grant No. 13. Center for collective use 21.0016.
Осипов, Д. А. Изменение аэродинамических свойств частиц полезного компонента в двухступенчатой конусной мельнице / Осипов Д. А. ; Институт горного дела Севера им. Н. В. Черского // Успехи современного естествознания. - 2023. - N 11. - С. 180-185. - DOI: 10.17513/use.38161
DOI: 10.17513/use.38161
Количество страниц: 8 с.
- Прикладные науки. Медицина. Ветеринария. Техника. Сельское хозяйство > Инженерное дело. Техника в целом > Горное дело. Горные предприятия (рудники, шахты, карьеры),
- НАУКА ЯКУТИИ > ПРИКЛАДНЫЕ НАУКИ. МЕДИЦИНА. ТЕХНИКА. СЕЛЬСКОЕ ХОЗЯЙСТВО > Инженерное дело. Техника в целом > Горное дело. Горные предприятия (рудники, шахты, карьеры).
This work is carried out in the laboratory of the Laboratory of mineral processing Institute of Mining of the North and is a continuation of research conducted on a steep-slope concentrator protected by a patent of the Russian Federation. Earlier, on the basis of experimental work carried out on a steeply inclined concentrator, unsatisfactory extraction of the useful component, clogging of the concentrate in the storage chambers, uneven dynamic processes over the entire area of the working surface of the concentrator were revealed. In order to further improve the concentrator, a shut-off valve was installed at the nozzle for water supply throughout the entire volume of the concentrator. Experimental studies have been carried out to improve the efficiency of mineral separation, where special attention is paid to the stability of the dynamic processes occurring throughout the working chamber of the concentrator, the exclusion of the formation of stagnant zones due to flow control and improving the quality of the concentrate as a whole. Thanks to the adjustment of the operating modes of the concentrator by the shut-off valve, it is generally possible to get rid of these negative phenomena and significantly increase the area of the effective working area. The most rational results are determined when the deck of the concentrator 700 is tilted, where the extraction of heavy fraction (magnetite) reaches 91.16 % at a speed of 0.35 l/s. The use of a shut-off valve makes it possible to regulate the flow of water inside the concentrator, at which conditions for effective separation of mineral particles are found. The work was carried out within the framework of the state assignment of the Ministry of Science and Higher Education of the Russian Federation (topic No. 0297-2021-0022 of the unified state information system for recording research, development and technological work for civil purposes No. 122011800089-2) using the equipment of the Center for Collective Use of the Federal research center "Yakut Scientific Center of the Siberian Branch of the Russian Academy of Sciences", grant No. 13. Center for collective use 21.0016.
Лебедев, И. Ф. Экспериментальные работы для определения параметров лабораторной модели крутонаклонного концентратора / Матвеев А. И., Еремеева Н. Г., Нечаев П. Б. ; Институт горного дела Севера им. Н. В. Черского // Успехи современного естествознания. - 2023. - N 11. - С. 160-167. - DOI: 10.17513/use.38158
DOI: 10.17513/use.38158