bluuebunny/crossref_metadata_2025_split huggingface dataset:
Approach to Estimate Rational Parameters of Rock Destruction from a Function of a Cutting Force
Authors: Averin E A , Zhabin A B , Polyakov A V 
Published: June 2019

Abstract
One of the main topics in modern mining science is the prediction of the excavation performance. The most used indicators describing excavation efficiency are specific energy and cutting force. At this the last one is of primary concerns of practicing engineers and researchers. Cutting force depends on physical properties of a destructed rock, tool’s geometry and technical parameters of the process such as penetration, spacing, etc. Rock properties are almost always considered as unchangeable parameters of the process. So in order to use rationally limited power resources of a machine mechanical excavator’s manufacturers and miners only optimize tool’s geometry and technical parameters of the process. Most of them are hardly changeable during exploitation. Thus, it is a responsible challenge to estimate optimal values of the parameters that is not still properly executed. The proposed approach is a mathematical, which defines cutting force as a function of a variable. It depends on estimation of such a value of the variable that relates to a specific relation λ between changes of the argument δχ and the function δy. The approach could be used not only on the designing stage of a project but also for in-situ decision-making on the changing of a specified parameter depending on permanently build function of cutting force.
The Method of Assessing and Substantiating the Influence of Factors’ Groups on the Reproduction of Mineral Resource Base
Authors: Dadykin V S 
Published: June 2019

Abstract
Mineral resources potential is the basis for a sustainable and balanced development of the modern economy in the case of its rational and integrated use across the entire spectrum of the diversity of minerals’ types represented. The method of estimating and substantiating the influence of groups of factors on the reproduction of mineral and raw material base is considered, consisting in the formation of an additive mathematical model for the reproduction of the mineral resource base, consisting of factors selected as a result of a two-stage ranking, and designed to analyze the influence of factors on the resulting integral index. As a result, a mathematical model was created that allows to assess and justify the influence of groups of factors on the reproduction of the mineral and raw materials base. The introduction of this methodology in practice will contribute to improve the management effectiveness of the mineral and raw materials complex, the formation of cluster economic structures on the territory of regions that are built taking into account the existing natural and mineral and raw materials potentials that are locomotives for the development of regional economy.
Site Location and Construction of Ski Resorts Using Geographical Information System (GIS) in Isfahan Province
Authors: Gabdrakhmanov N , Hosseini S 
Published: June 2019

Abstract
Considering the dry and hot climate governing Isfahan province, development of winter tourism (tourism development and providing the conditions for tourism) can bring in a different attraction for this province adding to its tourism potentialities i.e. the countless historical and cultural tourism attractions. The availability of high mountainous regions appropriately covered with snow can provide a susceptible field for winter tourism. This research is applied-developmental in nature aimed to locate and identify the appropriate areas and points for the construction of ski resorts in Isfahan province. For positioning and identifying the susceptible areas for the construction of ski resorts, the Isfahan’s high areas over than 2300 m were taken into account which were identified by applying analytic functions technique and satellite images. For locating, 7 measures including height, slope degree, temperature, snow depth, distance from the residential areas, infrastructure facilities and accessibility to communication roads were used. Besides, the statistical data obtained from 21 synoptic stations including that of Isfahan as well as nearby stations of Borujen, Saman, Si Sakht and Yasuj were also used. As per the obtained maps, Fereydunshahr, Semirom and a part of Chadegan were of high capability for the construction of ski resorts and winter tourism, respectively. In addition, the near distance between several villages and towns located close to these regions not only can play an effective role in the economic variety and development of these regions but also can significantly assist the management and maintenance of the ski resorts which should be deemed as a very important issue for the survival of such ski resorts.
To the Question of the Production of Silicon Carbide
Authors: Doshlov I O , Chizhik K I 
Published: June 2019

Abstract
The issue of qualified use of the whole granulomeres composition of petroleum coke is considered. The possibility of using petrochemical fines for the production of silicon carbide is shown. Various technologies for upgrading petro-coke fines are presented and their advantages and disadvantages are revealed. An optimal variant of the preparation of petrochemical fines, in which the main driver for the production of silicon carbide is proposed. The possibility of a significant increase in the reactivity and specific surface area of oil reducing agents due to precision sifting by refined petrochemical fines and removal of excess moisture from petrochemical fines is shown. Due to the evaporation of moisture and the action of water vapor on the carbonaceous material, a positive effect can be created, consisting in the vapor activation of the reducing agent, accompanied by an increase in its reactivity and resistivity. It has been established that the increased humidity of the reducing agent degrades the heat balance of the electric smelting because of the heat costs for evaporation and, in part, the dissociation of water, and also causes an increased consumption of the reducing agent due to its active oxidation with water vapor and water dissociation products.
Development of a Rental Mechanism for Reducing the Technogenic Risks in the Coal Industry
Authors: Fedulova E A , Potapov A L 
Published: June 2019

Abstract
The article examines reducing the technogenic risks in the coal industry by differentiating the withdrawal of mountain rents from mining enterprises of different types (cuts and mines). It is shown that the general level of the technogenic risks when using the open method of extraction is not inferior to the underground one. Consequently, the increase in the specific gravity of this method in the coal mining structure increases technogenic risks and requires protection from them. The purpose of the article is to develop a technical and economic mechanism capable of removing mining differential rent for coal mines in order to improve the balance of the production structure. The methodology of the study is based on the of use correlation-regression, factor analysis, expert assessments. The value of the differential mining rent arising in the Russian coal industry is determined using an open mining method in comparison with an underground mine method. The ratio of man-made risks and the value of mountain rents are estimated using different mining methods. A mechanism has been developed for the withdrawal of differential rent cuts, supplementing the existing model of the tax on the extraction of minerals. The possibilities of using a collection or a target payment for the use of an open coal mining method are shown to protect against the corresponding technogenic risks, to compensate for the accumulated damage.
The Assessment of the Loss of Economic Benefits from Ecosystem Services and Biodiversity at the Stage of Design and Function of Coal Companies
Authors: Mekush G E , Elgina Y M 
Published: June 2019

Abstract
At present time ecosystem services are of big importance in improving the quality of human life as well as the sustainable development of the economy of the country or a particular region. However, ecosystem services, which have been «inexhaustible» earlier, now are losing their potential, what leads to the decreasing of their functioning. World practice shows the actuality of studying this issue, because the important problem in the most highly urbanized industrial regions, which include the Kemerovo Region, is the accounting of economic value of ecosystem services in the development of industrial areas. During the research we have used logical and statistical analysis methods to account the value of ecosystem services in the coal mining region. The article presents the results of the losses of value of ecosystem services at the design stage of coal companies. The research of the possibility of ecosystem services restoration in areas with high anthropogenic loading (in the context of the Kemerovo Region) has shown the impossibility of a full recovery. However, the recultivation can restore soil fertility processes and their further economic use. Today the active environmental management has the strong impact on the environment and this leads to the using of the resource-saving type of output.
Analysis of the Relationship Between Thermal and Baric Subsurface Conditions in the Northern Part of the West Siberian Plate
Authors: Gorbunov P 
Published: June 2019

Abstract
Reservoir pressures and temperatures are the most important parameters that characterize the energy state of reservoir systems. They determine the amount of hydrocarbons that are contained in the bowels of the earth, as well as the operating modes of the deposits. The values of reservoir pressures and temperatures have a direct impact on the safety of drilling wells. It is known that within the interior of the northern part of Western Siberia there is one of the most harsh thermobaric regimes. The researchers recorded numerous manifestations of abnormally high reservoir pressures and high reservoir temperatures. In this article, the author sets the task of detailing the regularities of changes in reservoir temperatures and pressures in the interior of the study area. The second task is to find the relationship between these parameters and explain its nature. The results of the research should be aimed at improving the safety of exploratory drilling, and can also be used in oil and gas exploration.
Lemna Minor Cultivation for Biofuel Production
Authors: Kuznetsova T , Politaeva N , Smyatskaya Yu , Ivanova A 
Published: June 2019

Abstract
In this paper we consider usage of duckweed for national economy: for lifestock feed, for bioethanol and biogas production, in medicine and for phytoremediation. Cultivation of duckweed Lemna minor in conditions of St.Petersburg was carried out in order to obtain biomass. Two cultivation variants were studied: in a natural reservoir and in an artificial reservoir during a period from May to July 2017. The following cultivation conditions were determined: lighting, temperature. The population growth intensity was estimated. The most favourable conditions appeared to be at natural pond in Petergof. Daylight features, lightning intensity of the Leningrad Oblast’ are less favourable than that for south Russian regions, so biomass production rate is drastically lower. The obtained L. minor biomass was dried out under the infrared lamp up to constant weight. The obtained dry biomass was used to produce lipids extracts by Sohxlet technique. Lipids output was 4% of dry biomass for duckweed grown in natural pond and 6% for duckweed grown in artificial pond. Most likely it is driven by stress factor of duckweed growth, which is limited by insufficient solar illumination. The lipid output of duckweed is not high, but we are planning to choose optimum cultivation conditions for duckweeds, which will result in increased lipids output.
Research into Factors Influencing Traffic and Freight Capability of the International Transport Corridors in the Far East
Authors: Balenko V V , Kalikina T N , Serova D S 
Published: June 2019

Abstract
This paper distinguishes major factors that restrain the growth of volumes of export freight turnover and considerably impede they work of transport corridors. The authors suggest measures aimed at decreasing the necessary train traffic capability and increase in freight capability at the expense of the incremental growth of train mass.
Determining Coalbed Methane Content Structure
Authors: Kiryaeva T A , Oparin V N , Yatsenko D A 
Published: June 2019

Abstract
The study provides experimental evidence of scientific ideas that are important for developing the phenomenological basis of the theory of phase transformations in the ‘coal – methane’ system accompanying the formation of gas-dynamic processes in coal beds when their initial stress-strain state and temperature background are disturbed during mining. Residual gas content of coal was determined versus the time after its recovery from coal beds and the weighted mean particle size; the effect of the pore structure of natural coals on the gas-dynamic activity of coal beds was estimated. It was shown that the major part of volatile compounds (mostly methane) is dissolved in the bulk of carbon layers.
Fire Safety of 1, 2 and 2l Refrigerants: Myths and Reality
Authors: Kopylov S N , Kopylov P S , Eltyshev I P 
Published: June 2019

Abstract
For many years fire safety measures for refrigerants were based on experimental data on their burning velocity and flammability limits in air. The analysis conducted in the paper and obtained experimental results show that knowledge of the flammability limits and the burning velocities is not enough to ensure the fire safety of the refrigerant. “Low flammable” substances may form explosive mixtures with air in wide range of conditions (initial concentration, pressure, temperature, ignition source (open hydrocarbon flame, hot surface)), even being a part of non-combustible mixture. One of the most underestimated things is an influence of open hydrocarbon flame as ignition source for halogenated substances not just from Class 2L (low flammable), but also from Class 1 (non-flammable). Mixtures of Class 1, 2L and 2 (lower flammable) refrigerants with lubricant oil should be also tested more carefully for their fire and explosion safety. In some cases the danger of “low flammable” substances may be underestimated due to the mismatch between test conditions and real conditions of use. It is also important that due to peculiarities of the process of mixing “low flammable” partially halogenated substances may form explosive mixtures with air at any mass of partially halogenated substance – the influence of mass factor must be also estimated more carefully.
Comparative Analysis: Innovative Performance of Accommodation Facilities in Primorye as a Basis of a New Infrastructural Model of Rapid Sectorial Development in the Russian Federation
Authors: Pavlenko I G , Rudenko L L , Valantsevich A F 
Published: June 2019

Abstract
The research is focused on the analysis of innovation activity of accommodation facilities in Primorsky Krai and elaborating recommendations for its enhancement based on strategic partnership and business. The study evolves around hotel facilities carrying out innovation activity. Primorsky Krai is characterized by low level of global innovations in general; yet the hotel segment is undergoing a certain kind of innovative transformation (changes or improvements in product, service, process, etc.). The innovation was evaluated according to the applied classification of changes (in service offers, concepts, technology and business processes). Such evaluation of hotel facilities innovation is based on four major criteria: openness for innovation, innovation management, resource availability and innovation efficiency (both social and economic).The carried out analysis showed that third parties involved in the processes contribute to the innovation activity of the hotel facilities. Additionally, it has been found that innovation activity of hotel facilities in the city of Vladivostok comes up to a satisfactory standard of 55%, which has to be further improved.
Advanced Topics in Assessment of the Atmospheric Air Chemical Pollution And its Impact on the Population Health in the City of Kazan
Authors: Stepanova N V , Fomina S F 
Published: June 2019

Abstract
The assessment of non-carcinogenic risk for the population health from chemicals coming with exhaust gases of motor transport citywide and in certain districts of the city of Kazan was performed. The calculation was carried out according to the results of the laboratory and instrumental tests carried out by FBHI “Center of Hygiene and Epidemiology in the Republic of Tatarstan” for the period from 2010 to 2016. Suspended solids (to 28.0%), carbon (soot) (to 24,6%), and nitrogen dioxide (to 19,2%) contribute most to the value of total risk for the population health in the districts. Organs of the respiratory system (HI=11,93; 13,06 and 10,51) are highly vulnerable to the risk of developing unfavorable non-carcinogenic toxic effects on chronical exposure to chemicals coming from atmospheric air in the city and districts due to exposure to TSP, PM2,5 and PM 10 total fracture (from 42,5 to 62,0%). The expected number of additional cases of total mortality associated with chronical exposure to TSP made 1244 cases per year among the whole city population without taking into account the external causes. A monitoring system available in large cities, undercount of the atmospheric air pollutants prevents from correct assessment of the potential risk and actual damage for the population health.
Underground Storage of Natural Gas in Hydrate State: Numerical Experiment
Authors: Bondarev E A , Rozhin I I , Argunova K K 
Published: June 2019

Abstract
The paper is devoted to simulation of the initial stage of natural gas hydrate underground storage: gas injection into aquifer just below permafrost rocks. It is based on the mathematical model of multiphase non-isothermal real gas and water flow in porous media. The model takes into account the transformation of gas and water into hydrate at certain temperature which depends on gas flow pressure. The dynamics of hydrate and water saturation as well as the pressure and temperature fields in a reservoir with given porosity, permeability and initial values of pressure, temperature and water saturation have been studied. An implicit finite-difference scheme is used to approximate the original boundary-value problem. The finite-difference equations have been solved using simple iteration and sweeping algorithms. Several examples of calculations corresponding to real cases are given. Calculations have revealed that the final result strongly depends on the combination of porosity and permeability of a reservoir.
Development of Drilling and Casing Technologies for Permafrost Areas
Authors: Atlasov R , Nikolaeva M , Karamzin V 
Published: June 2019

Abstract
During the well drilling operations in permafrost there are a number of specific complications that often lead to serious accidents: soil bulging, destruction of wellheads, collapses of wells walls, breakage and crushing of casing columns due to inefficient cementing in the frozen soil, griffins, etc.
The above-mentioned complications are predetermined by incorrect drilling and fastening of wells. The article gives the main recommendations that contribute to the successful wells completion in permafrost:
1. Construction of wells without descending shaft and elongated directions;
2. Drilling on low-temperature drilling fluids;
3. Drilling in the summer period by drilling bit of smaller size with the subsequent reaming to the required diameter;
4. Achieving the maximum commercial speeds.
Discovering and Assessing the Ecological Risks in the Crimea
Authors: Smirnov V O , Kozlova A T 
Published: June 2019

Abstract
This paper gives assessment to the ecological threats and risks in the Crimea. Ecological risks of natural, anthropogenic and social character are investigated in practice and mapped. The Crimea is distinguished by its regional features and it stipulates the peculiarities of ecological risks within the territory. The diversity of landscapes, the contrast of natural conditions and their spatial-temporal variability are the reasons of many dangerous natural and technogenic processes on the territory of the peninsula. The risks are classified according to different principles. There are several types of risks according to the type of environment: natural, technogenic and social. The risks and hazards have been studied and assessed in practice in the Crimea. The natural and anthropogenic risks have been considered and mapped. Key words: natural ecological risks, anthropogenic risks, social ecological risks, Crimea, assessing, mapping.
Reuse of Construction Materials after Demolition of Buildings
Authors: Nasonova T V , Zolotukhin S N , Potekhin I A 
Published: June 2019

Abstract
In Russia each year appears 15 million tons of building scrap. According to statistic agency data, there were 10% of this measure is reused, almost for backfill pits and some for use as material filler. At Voronezh state technical university in the chair of Building structures and basements, realized experience of construction new low-rise houses made from reused building materials (scrap), which came from demolition places by lean dismantle. From the 2011 year till today by this technology have constructed not less 5 days each year in Voronezh region. The purpose of this research work is an evaluation of the growth the volume of reuse building scrap in Voronezh region. The main task is elimination obstacles of the growth potential of using this dismantle technology with following construction low-rise houses made from reused materials.
Features of Fastening Very Unstable Rocks with Combined Support on the Basis of SZA and Shotcrete
Authors: Kalmykov V N , Neugomonov S S , Volkov P V 
Published: June 2019

Abstract
The results of industrial tests of a reinforced combined support based on self-fastening anchors are presented. The approved versions of reinforced combined supports that ensure the stability of contours of mine workings in difficult mining and geological conditions of the mine “Orlovskaya” LLP “Vostoktsvetmet”.
Paragenesis of the Upper Jurassic-Lower Cretaceous Sediments in the Priverhoyansky and Indigiro-Zyryansky Basins
Authors: Sivtsev A I , Zueva I N , Chalaya O N 
Published: June 2019

Abstract
The results of comparison geological-geochemical study of the Upper Jurassic-Lower Cretaceous sediments of the Preverkhoyansky and Indigiro-Zyryansky basins are considered from the positions of uniform sedimentary basin evolution. Based on lithologic-petrographic data the differences were established in the catagenetic transformations degree of the organic matter (OM) of the Upper Jurassic-Lower Cretaceous deposits from MC3 within the Preverkhoyansky basin and up to MC5 - in the Indigiro-Zyryansky. The distinctions are due, mainly, by a post-collision stage of development of the territory of the Indigiro-Zyryansky basin. The geochemical characteristic of organic matter is given. The identity of composition and distribution of hydrocarbons-biomarkers indicates a common source of the initial OM formed in the conditions of continental facies in the Preverkhoyansky basin. Contrary, OM accumulation of the Upper Jurassic deposits of the western part of the Indigiro-Zyryansky basin occurred in sea and lagoon facies. OM enriched by sapropel material that indicated more oil generation potential of rocks. Based on analysis of the received results the map of prospects of oil-and-gas bearing with allocation of sites for conducting prime exploration works on oil and gas is constructed for the Upper Jurassic-Lower Cretaceous deposits of the Preverkhoyansky and Indigiro-Zyryansky basins.