Purpose. Determination of rational modes and parameters of vibration separator operation on the basis of physical and mechanical properties of components of separated mineral raw materials to ensure high efficiency of vibration separation.
Technique of researches. Selection of rational parameters and estimation of operation efficiency of vibration separator were carried out by means of mathematical simulation of real vibration process. For this purpose, a mechanoreological elastic-viscoplastic model of mineral raw material particles was used. The motion algorithm of the model was presented as a block diagram. Various stages of movement of the particle model along the vibration organ were considered: movement in contact with the vibration organ by sliding, free movement at the flight stage. Based on the obtained mathematical model and presented algorithm, computer research programs were developed.
As a result of the numerical experiment, the mathematical model determined the main parameters and modes of operation of the equipment, providing the required technological characteristics of the process of enrichment or classification of mineral raw materials.
When solving the task of detecting rational operating modes and parameters of the vibration separator, the adjusted parameters of the equipment varied according to the specified plan.
At the same time, the optimization criterion was the angle of divergence of the paths of movement of the separated particles.
Study results and discussion Mathematical model of movement of mineral raw material particles has been developed to study process of movement of mineral raw material particles on working member of vibration separator. In the course of studies to identify rational operating modes and parameters of the vibration separator, ranges and order of variation of parameters according to the experimental plan were determined, and efficiency of separation was evaluated. At the same time optimization criterion is angle of divergence of paths of separated particles motion. Algorithm of mathematical model functioning is developed and presented in the form of logical block diagram including considered conditions and equations of model motion. The logic of its functioning is discussed in detail. Based on the algorithm and mathematical model, research computer programs are developed. They allow to solve the problems of studying the vibration process of interaction of mineral raw materials particles with the vibration organ and optimization of the separator according to the main parameters.
The research object. The proposed article discusses the state of energy resources and the emission of greenhouse gases in the countries of Central Asia. The possibility and prospects of countries for the widespread involvement of alternative energy sources are considered on the example of the intensification of research and applied work on the development of technology for producing hydrogen by the electrolysis of idle discharges of water from reservoirs in the Republic of Tajikistan.
Research objective. Analysis of the fuel and energy resources state of the region of Central Asia, assessment of the potential possibilities of alternative energy sources indicating the need for their widespread use to mitigate climate change and preserve the snow and ice resources of the region.
Methodology research. Extensive use of archival and up-to-date data on potential energy resources in Central Asian countries, assessment of renewable energy resources and their ability to displace organic energy sources and a significant contribution to climate change mitigation and the preservation of snow and ice resources in the region.
Research results. It is shown by analysis the fuel, energy potentials, and greenhouse gas emissions of the countries of the Central Asian region that the implementation of the Sustainable Development Goals requires the widespread introduction of alternative energy sources. The technological scheme of hydrogen production as a representative of green energy is presented and its principal applicability in a wide range of industries and, primarily, in providing vehicles with environmentally friendly fuel is shown.
Conclusion. Thus, as a result of the conducted analyzes of the fuel and energy sector state in the countries of Central Asia, their share in the total number of greenhouse gas-factors of climate change has been established on the need to accelerate the production technology of green energy. It has been established that the Central Asian region has all the necessary capabilities for a sharp reduction in greenhouse gas emissions.
The enormous hydropower potential in upstream countries and a wide network of agro-industrial industries in the lower reaches creates a favorable condition for the development of the region and its contribution to the achievement of sustain-able development goals. The widespread involvement of hydropower and other types of alternative energy sources (solar, hydrogen) leads to a sharp increase in the energy supply of industries and small enterprises, populations in the foothills and mountain settlements, and the development of farms. To implement such measures, it is necessary to establish an appropriate intergovernmental body and develop legal, economic regulatory standards.
The complex development of mining industry, science and higher education plays a decisive role in the successful development of mining regions. Success in the field of subsoil use is possible only with the training of appropriate specialists with knowledge of modern mining Sciences, and only in this case can real progress in the development of mining production be achieved. Therefore, the achievements of mining Sciences should be made a mandatory part of the educational process with studying existing and promising geotechnologies. Modern problems of effective development of mining education are determined by the gap between modern achievements in science, production and the state of the educational process as a whole. The development of mining operations requires new content of training, the development of mining Sciences and the necessity of combination of various physico-technical and physico-chemical processes for a more comprehensive exploitation of mineral resources requires a more complete implementation in the educational process knowledge of such basic disciplines as physics, chemistry, theoretical and applied mechanics, biochemistry, genetics, microelectronics, and robotics, all require experts of wider profile, with a more profound and universal education. Developing and making mining design decisions requires a risk-oriented approach with deep knowledge of risk theory, mathematical statistics, system modeling, and programming.
An example of the experience of interaction of the gold mining company JSC “UGС” with scientific and educational organizations, the result of which was the formation of a strategy for the integrated development of gold deposits in the Urals at the final stage, the development of the logistics scheme of mines to ensure stability of operation. It is shown that successful development of mining territories is possible only on the basis of coordination of the interests of the owner of the subsoil, subsoil users and the population of mining regions with the coordinated development of higher mining education and science and the leading role of mining companies.
Risk management concept is a good instrument for systematic approach to the problems of the rational land use. Measures for risk reduction could be legislative; organizational and administrative; economic, including insurance; engineering and technical; modelling; monitoring; and informative. Engineering and technical methods are very important for rational land use planning and landslide risk management and reduction. Monitoring system organization and construction are two of the most important methods for natural hazard forecasting, prognosis, and early warning
Modern digital technologies greatly influence all the areas of public life, economy, culture and science, thus creating principles. The research community points out that mankind have entered the digital age. The Internet and associated digital technologies (broadband and wireless communication, computers and software) have created communication environment via which enormous data volumes pass through, being an integral part of social and economic interactions in the modern context.
Over the past few decades the world witnessed an increase in various challenges and threats, in particular with regard to ecology. Rapid seizure of some territories resulted in environmental contamination, and in some instances in its degeneration. In this respect digital technologies gained a significant role in sustainable development processes, especially of the territories which are under intensive human and man-made impact.
Thus, currently the data bank is being generated regarding the environment condition and change hereof on the entire territory of the Russian Federation. The nationwide operator for generation of such data bank is Federal Service for Hydrometeorology and Environmental Monitoring. The data bank is generated for the purpose of possible forecasting of natural and man-made processes development on certain territories, as well as for control of these processes with application of efficient environmental protection measures. In this case the basic tool is digital technologies, with the help of which submission of timely information is possible about environmental condition to the nationwide operator (in the form of charts, tables, schedules and reports).
However, in our opinion, due to accumulation of ever greater data volume, systematization of environmental activity digitalization trends is required, which is the objective of this work. Systematic digitalization of environmental activity will ensure optimum maintenance of environmental policy within natural resource user enterprises and harmonious development of natural and social-economic media.
The analysis of some modern conferences in the North Caucasus, in particular, the results of the conference held in September 2018 in Grozny on the sustainable development of mountain territories is given. The importance of regional initiatives in the development of a methodology for the sustainable development of mountain areas is noted. The conclusions and recommendations of the conference noted that the current stage of mountain research is characterized by a high degree of activity at the international level, while there is a relatively weak implementation of the ideas and principles of sustainable development of mountain territories in specific regions. The implementation of the accumulated experience should go to the subjects of the Russian Federation, most of which to one degree or another have mountains in their composition. The current regional science is forced to independently build its relations with federal and international centers, to formulate and conduct regional studies in the field of sustainable development of mountain territories, based on its own sources of financing. Nevertheless, as the conference demonstrated, such a strategy not only helps regional academic science survive in modern conditions, but also makes itself known in various forums. However, state support should contribute to reaching the proper level of scientific and practical work in mountain regions.
Environmental problems of the mountain zone of RSO-Alania appeared as a result of long-term exploitation of natural resources, largely aimed at the extraction and processing of polymetallic ores. As a result-today a number of unique landscapes of mountain basins was unsuitable for human activity. In addition, further irrational use of natural resource potential can lead to further deterioration of the biosphere of the region. Therefore, the aim of this study is to search for the most rational models of environmental management within the mountainous areas of RNO-Alania. To identify the prospects of environmental management it is necessary to identify both the main centers of accumulated negative anthropogenic impact and potential sources of natural resources, the use of which is possible within the framework of environmental and economic environmental management (EEM), by using methods of comparison and analogies, mathematical calculations and modeling based on environmental management paradigms, i.e. principles of minimal, environmentally friendly and efficient use of natural resources. Environmental and economic management is a system in which: - raw materials are processed in depth; - renewable resources are recover; - the waste production is fully utilized. As one of options of application of the EEM models there can be a symbiosis of a number of the directions of traditional environmental management with the tourism industry. As a result quite viable model representing network of small farms with high extent of differentiation of the made goods and services which will allow turns out: a) to provide the region with food; b) to create jobs and to improve a demographic situation; c) to create a wide range of the recreational services based on esthetic, spiritual or recreational assets, such as ecotourism, agro-tourism and so forth; d) to stabilize spontaneous ecological processes (a mountain erosion of soils, to regulate a part of a rain drain, and so forth). As an indicator of the economic efficiency of the proposed model, the profitability of the environmental protection measure is used, based on the dependence of the results of the environmental protection measure on the costs of their implementation. The proposed model can be implemented in the form of a form of socio-zones of special regime of nature management (SZSRNM), already successfully tested in a number of similar natural and geographical conditions of regions of Russia. The implementation of the proposed methods will make it possible to accelerate the socio-economic development of the study areas, will provide an increase in the standard of living of the local population, while allowing to preserve the natural ecological balance.
Research objective – to reveal dependence of techno-sphere objects of the Siberian Federal District (SFD) from the complex emergency situations (ES) of natural and man-made of a mountain part of the SFD. For realization of the purpose the following problems were solved: 1. To reveal dependence of techno-sphere objects of the SFD from complex emergencies of natural character. 2. To reveal dependence of techno-sphere objects of the SFD from complex emergencies of man-made character. 3. To make the rating of subjects of the SFD on vulnerability from complex emergencies of natural and man-made character.
Research methods: in the work methods of the risks forecast emergence of multiple-factor and complex emergencies of natural and man-made character taking into account climatic features of regions of the country on the example of the SFD were used. In the article the assessment primary (temperature, wind, rainfall) and the secondary factors causing emergence of complex emergencies of natural and man-made character in a mountain part of the Siberian Federal District (SFD) is carried out. Extent of influence of these factors on subjects of the SFD is established and the gradation of indicators on the level of influence of each factor is carried out. As a result of the conducted research the following conclusions were formulated: 1. The SFD shares two geographical zones: mountain and flat. Each of zones differs in physiographic conditions and levels of natural and man-made danger. Levels of danger are formed by a combination of primary and secondary factors in various territories. 2. Primary (temperature, rainfall, wind) natural sources of emergency are the defining factors of formation of natural emergency situations in the territory of the SFD, at the same time the combination of primary and secondary sources forms complex natural and natural and man-made emergencies. 3. On the basis of the obtained data it is possible to carry out comparison of resistance of mountain and flat parts of the SFD to primary and secondary factors of emergence of emergency. According to the obtained data the air temperature, fire hazard, flood danger, ice jams on the rivers, avalanche danger, torrential danger, landslide hazard have the greatest impact on a mountain part of the SFD. According to the total indicator including all above-stated indicators in the sum, a mountain part of the SFD has the greatest indicators of total natural danger. 4. The wear of the equipment is also the important factor promoting accidents in a techno-sphere in territories of a mountain part of the SFD. Subjects of a mountain part of the SFD have indicators of influence of wear of the equipment above, than on a flat part of the district.
The purpose is to investigate dynamics of climatic characteristics of air temperature in mountainous areas of Kabardino-Balkaria and Karachay-Cherkessia during instrumental measurements with data from the nearest meteorological stations. Research methods. Methods of mathematical statistics is the choice for data processing and calculation of climatic indicators and their dynamics. The periods of averaging for climate indicators correspond to the recommendations of the World Meteorological Organization. To eliminate the inhomogeneity of the initial data, we used the mean values of the air temperature in 24 hours for the temperature levels before 1966. The series have the same length by regression methods according to the nearest meteorological station. Research results. The research on correlation of mean month and season indicators of air temperature on meteorological stations Terskol (Kabardino-Balkaria) and Klukhorsky pereval (Karachay-Cherkessia) has shown high coherence of climate parameters in the region. The research of change in the annual course of air temperature in the region reveals that minimum shift since January for February in 1981–2000 in the highlands of Karachay-Cherkessia. Dynamics of average annual amplitude of air temperature shows statistically doubtful increase. In the explored region the maximum of 10-year mean values are at the beginning of the research period. The same is for 30-year means. The exception makes the summer parameter of 1981–2010 in Terskola which exceeds initial values on 0, 07 °C. At the beginning of the period (in 1951–1960), all seasonal anomalies of mean decade temperature, exceeds norm. The situation repeats only in 2006–2015 (except for winter anomaly in Terskol). Conclusion. Climatic characteristics and indicators of their dynamics in mountainous areas of the republics are close thanks to small distance between them and to location in the same altitude zone. It gives the grounds to consider the climatic regularities of activization of dangerous processes revealed in more studied areas of Kabardino-Balkaria for all considered territory. At all observed fluctuations of climatic indicators of air temperature in mountainous areas of Kabardino-Balkaria and Karachay-Cherkessia their change doesn't exceeds the standard deviation of levels during 1951–2015.
This field research based on the seven Biosphere reserves of Asturias, looks for identify: i) the perception of sustainability among their tourists, and ii) the sociodemographic factors linked to the propensity to increase expenses in sustainable accommodations as a proxy variable of environmental motivation. A personal survey - based on a convenience sampling - is used to find the answers to the research questions posed. The respondents' perceptions of sustainability were analysed using the best-worst scale method. Experiencing nature in an intense and deep way was considered the most important aspect of sustainable tourism, while dealing with the culture of the host region was perceived as the least important aspect of sustainable tourism.
The identification of relevant sociodemographic factors was carried out through a simple regression model. Age, housing category and family income have a positive effect on the propensity to spend more on sustainable accommodations. On the contrary, neither gender nor training seems to have a significant impact on the propensity to spend on sustainable accommodations.
ISSN 1998-4502 (Print) ISSN 2499-975Х (Online)