bluuebunny/crossref_metadata_2025 huggingface dataset:
Formation the Parametric Model of an Operational Status Transport Interchanges System
Authors: Panteleeva M , Borozdina S
Published: April 2020

The article is devoted to the analysis of possible solutions to traffic congestion, which have become an integral part of the modern space of the cities and regions population vital activity, especially near houses and shopping complexes. It is impossible to characterize the modern transport system without mentioning errors when planning the organization of traffic, as well as in the design and construction of transport hubs. Attempts to solve the problem of traffic congestion have been made repeatedly in various countries of the world, but all of them were of a differentiated nature and national specificity. Many researchers believe that in order to level transport problems, it is necessary to build new road junctions and separate traffic flows. However, according to the authors, the most suitable, in particular, for our country, can be a comprehensive approach to solving these problems. This approach involves the creation of a parametric model of forming an indicators system for assessing the operational state of road interchanges in the living environment formation conditions. This system allows taking into account the integral impact of technological, economic, environmental and social factors that affect the efficiency of transport interchanges.
Hierarchy Analysis Technique in Solving the Problem of Choosing a Place to Build the Incinerator Plant
Authors: Rizaev I S , Takhavova E G
Published: April 2020

Approach to choose a place for the incinerator plant is considered in the paper. One of the ways to solve the problem of continuous growth of household and industrial waste in the world is construction of incinerators. In Russia, there is still a great fear that the incineration of waste will dramatically worsen the environmental situation. It is significant to take into consideration the cost of construction, the necessary conditions for construction and the opinion of citizens when choosing the appropriate location of the plant. Since this problem is multi-criterion, the method of hierarchy analysis was suggested to consider the site selection. This approach refers to the problem of decision-making in conditions of certainty, but in a situation when the quantitative indicators are determined on the basis of the scale of preferences and on the basis of feelings and emotions. The stages of solving problem with the help described method are described. The hierarchy analysis technique was demonstrated by the example of the task to find a place for the location of the waste incineration plant
Ecological and Economic Assessment of the Impact of Industrial and Consumer Waste on the Quality of Gray Forest Soil
Authors: Verkhovets I A , Tuchkova L E , Tikhoykina I M
Published: April 2020

This article deals with the assessment of the degree of soil contamination with solid municipal waste (SMW), solid household waste (SHW), and the waste of sugar production (sugar lime) in the area of grey forest soils of Orlovskaya oblast. The data obtained demonstrate that SMW has a high impact on soil contamination. The analysis of the pollution load factor value for soils shows moderately dangerous contamination category. Across the territory under analysis, the soil pollution exceeds the maximum permissible concentration (MPC). The evaluation of the sugar lime pollution degree and its overall values exceed the background values by 7.3-246 times. The research conducted explicates the impact of various types of waste on the surrounding areas and their contamination with a set of heavy metals.
Simulation of the Centrifugal Compressor Flow Part of the Internal Combustion Engine to Determine Areas of Non-Evaporated Moisture Effective Discharge during Charge Air Evaporative Cooling
Authors: Afanasyev M P
Published: April 2020

The article presents the results of modeling the operating parameters of an engine pressurization assembly centrifugal compressor at evaporative air cooling. A step-by-step method for calculating a centrifugal compressor is described in order to evaluate the effect of evaporative cooling and air humidity on the temperature behind a centrifugal compressor. The proposed method for calculating the operating parameters of an engine pressurization assembly centrifugal compressor of an internal combustion engine with evaporative air cooling is used to evaluate the effect of humidity on the operation of a turbo compressor using an author program (certificate of state registration of the computer program № 2016611761). A series of calculations of a centrifugal compressor parameters was carried out with finely dispersed water in front of the compressor, which allowed the air humidity to be maintained at 100% with changes in temperature and pressure during the compression process. Analysis of the results showed areas in which it is advisable to organize the separation and removal of excess moisture. The presented research results are necessary for choosing the methods for separating moisture during evaporative cooling of charge air in turbocharged internal combustion engines.
Reduction of Technological Risks through Effective Human Factor Management Based on Modern Information Tools
Authors: Kolobashkina L V , Zabiyaka D A
Published: April 2020

The relevance of effective human factor (HF) management with the aim of reducing modern technological risks is shown. Professional and psychological testing (PPT) is highlighted as one of the HF main management tools. A technology is proposed for increasing the objectivity of PPT by taking into account individual information parameters (IIP). Developed methodological and software tools for remote network registration of IIP. The software is based on the use of a database (DB) containing the original psychological tests, as well as keys for processing the test results, taking into account the IIP. The results of an experimental study of the effectiveness of testing technology are presented.
Calculation of Quantum Chemical Values of Corrosion Inhibitors Molecules by Heterocyclic Compounds
Authors: Gabitov A I
Published: April 2020

Theoretical concepts of inhibition mechanism in metal corrosion and forecasting of protective properties of substances are connected with experimental (electrochemical, adsorption, mechano-chemical) research. Inhibition mechanism may be fully demonstrated by comparing experimental research data with results of calculating quantum-chemical values of the proposed corrosion inhibitors molecules. The latter therewith enable to detect those physico-chemical characteristics that directly demonstrate protective properties of the inhibitor. Molecular moment, number of atoms in molecule and number of electrons in outer molecular orbitals are found to have maximum affect on the protection level. Application of petrochemical products including semi-finished products and petrochemical wastes for making new highly efficient and relatively inexpensive corrosion inhibitors is shown to be promising. Calculation results of quantum chemical values of corrosion inhibitors molecules by heterocyclic compounds may be used in learning corrosion inhibition mechanism by the compounds studied.
Development of Optimum Mixture for Multicomponent Inhibiting Composition by Methods of Mathematical Modeling of Experiment
Authors: Gabitov A I
Published: April 2020

Great loss of metals, numerous economic losses take place due to accidents in pipelines, industrial chemical and technological installations, etc. because of acceleration of corrosion processes. Therefore, actually all the developed countries of the world pay much attention to protection against corrosion in all manifestations thereof. Highly efficient multicomponent inhibiting composition to be obtained by modification of 4,4-dimethyl-1,3-dioxane wastes is developed and proposed to be industrially implemented by methods of mathematical design of experiment. Component mixture of each composition to be tested was optimized by maximum protective efficiency. Concentration of components in the mixture analyzed was considered as the major factor. Regression equation analysis enabled to find best component ratio. Synthesis of inhibitor obtained under 4,4-dimethyl-1,3-dioxane wastes enables to solve the problem of rational utilization thereof.
Determination of Formation Water Toxicity with the Use of Wheat Seeds (Tríticum)
Authors: Ovsyannikova I V , Pryanichnikova V V
Published: April 2020

The article is devoted to the study of the toxic properties of formation and model waters prepared in accordance with their chemical composition. The assessment of hazardous properties was carried out by phytotesting using wheat seeds (triticum) as a test object. Two varieties of wheat – “Salavat Yulaev” and “Omskaya-35” were used for the experiments. The study analyzed such indicators as seed germination, the seedling underground and aboveground parts length, the total length of the seedling. Research results showed good responsiveness of seeds to this toxicant. The acute toxicity of the studied model medium and formation water was revealed. A comparative toxicity analysis showed a slight deviation between the tested aqueous media. The studies show the importance of taking into account the toxic properties of oil waters for environmental monitoring and in the recultivation of water resources and land.
Management of Explosive Crushing of Rock Mass in Quarries
Authors: Shevkun E B , Leshchinsky A V , Shishkin E A
Published: April 2020

The article deals with improving the quality of rock blast crushing due to increase in delay intervals. The recent decades change in understanding of the rock destruction mechanism under the blast loads influence is shown. The blast mechanical effect reveal itself in rock crushing as well as in the loss of strength away from a charge. The blast waves are acting as compressive and tensile loads in this area. Existing micro-defects and micro-cracks grow as a result. The rock mass strength properties changes. A new condition of the rock mass is called pre-destroyed. The blasts time delay increasing causes cracks merging and a gradual size decrease of the rocks structural elements.
Computational Experiment of Non-Isothermal Filtration of Real Gas during at Injection through a Short Borehole
Authors: Ivanov G I , Nikolaev V E
Published: April 2020

In this paper, a computational experiment of injecting real gas through a single borhole, revealing 80% of the capacity of the gas-bearing formation, taking into account the heat exchange of the reservoir formation with the host rocks. The experiment is performed within the modified mathematical model of non-isothermal gas filtration, which is derived from the laws of mass and energy conservation, as well as from the Darcy law. Physical and caloric equations of state and Newton-Richmann’s law describing the heat exchange of the gas-bearing layer with the host rocks were used as closing relations. The results obtained in this experiment were compared with the results obtained earlier in the case when the borehole revealed the entire formation capacity. When injecting gas through a short borehole, significant changes in the dynamics of the temperature field in the bottomhole zone were revealed.
Regulation of the Operation of Ejector Systems under Unsteady Gas Pipage
Authors: Buranshin A R , Godovskiy D A , Tokarev A P
Published: April 2020

During the natural gas trunk transportation, the need for the repair work demanding cutting off the pipeline’s section and gas etching occurs periodically. According to established repair practice on a linear part considerable volumes of natural gas are pitted in the atmosphere. Jet pumps — ejectors can participate in the offered processes of the cut section’s pumping, however because of not stationarity of process it is necessary to save high coefficient of ejection by regulation of the ejector operation. Regulation of the ejector operation by means of the needle with constant pressure of working gas and gas at the exit from the ejector and gas-intaking variable pressure is offered. Operation parameters of the ejector are determined by means of ANSYS Fluent CFD packet. The adjusting diagram of dependence of the ejection coefficient and a consumption of the inhausted gas on pressure of the inhausted gas and the provision of the needle in the snivel is constructed.
Identification of Priority Areas of Digitalization of Underground Coal Mining to Enhance the Stability of Mining Regions
Authors: Fedulova E A , Mishchenko V V , Alabina T A
Published: April 2020

The study solves the problem of choosing the most promising, effective digital technologies to increase the sustainability of the development of coal enterprises that mine opencast mining. The classification of digital technologies for underground coal mining in four blocks is used. Specific technologies are subjected to expert evaluation by the method of medians of ranks with the control of the coefficient of concordance and the chi-square test. In geological exploration and mining planning, the most effective technologies are the use of drones, the compilation of 3D models of subsoil and work, and the formation of large data bases. For coal mining, priority technologies are a deserted mine, an intellectual mine, automated monitoring, mining and geological information analytics. In the direction of coal and waste processing, an expert assessment has not been agreed; priority technologies have not been identified. The research results expand the understanding of the impact of various digital technologies on the sustainable development of the coal industry and can be used by coal companies and authorities in the development of the technical policy of the coal industry.
Using the Resource Potential of Drill Cuttings in Road Construction
Authors: Vaisman Y I , Pugin K G , Vlasov A S
Published: April 2020

The article discusses one of the national environmental problems - a negative impact on the environment from improper placement of drill cuttings. The main source of pollution is oil products, chemical reagents added to drilling mud and heavy metals that are part of drill cuttings. Methods for the treatment of drill cuttings, which consist of burial, neutralization and disposal are presented. A more promising and cost-effective method is the disposal of drill cuttings. A disposal method was chosen, consisting of the use of dried drill cuttings as a mineral powder for the preparation of asphalt concrete mixture. Samples of drill cuttings from different fields of Russia were selected. Laboratory studies of drill cuttings samples were carried out and the results of the content of heavy metals, physical and chemical indicators, physical and mechanical indicators of asphalt concrete samples were given. During the research it turned out that the content of heavy metals does not exceed the established norms, the physical and chemical indicators have exceeded the established standards, the physical and mechanical indicators of asphalt concrete samples comply with the requirements of regulatory documents.
Mine Tailings: Environmental Damage and Resource Potential
Authors: Provornaya I V , Yurkevich N V , Dzuba Y A
Published: April 2020

In this paper, the authors constructed a simulation model that allows economic assessment of environmental damage. Using the example of sulfide-bearing wastes from a mining and processing plant in the Kemerovo region, the total damage caused to water and land natural resources in 2018 was calculated. 659.7 million rubles. This damage amounted to 659.7 million rubles. The authors also made a forecast estimate, according to which the environmental damage in 2030 will amount to 950 million rubles. This forecast can be realized in case of failure to take any measures to eliminate or reduce the negative impact on the environment.
Study of Fuel Efficiency of Hybrid Vehicles
Authors: Kiseleva E V , Kaminskiy N S , Presnykov V A
Published: April 2020

The article presents the results of studying the fuel consumption rate of hybrid vehicles operated in Primorsky Krai. The research is directed at the identification of phenomena causing the difference in average fuel consumption rates of hybrid vehicles stated by the manufacturer and the actual values of such consumption provided by vehicle owners. Revealing the factors which have the impact on the average fuel consumption rate of hybrid vehicles is also covered in the paper. The authors compared the vehicle fuel consumption rates of the manufacturers of Honda and Toyota cars.
The Rare Metal Mineralas of the Albazinskoe Gold-bearing Deposit: Addition Sourch of Non-ferrous and Ferrous Metals
Authors: Kemkin I V , Kemkina R A
Published: April 2020

The paper presents new data on mineral composition and geochemical peculiarities of ores from the Albazinskoe gold-bearing deposit (Khabarovsk region, Far East of Russia). Excepting earlier known ore minerals represented by sulfides of iron, arsenic, lead, zinc and copper, we have established about two tens ore minerals, new for this deposit. Among them there are sulfides of antimony, bismuth and molybdenum, native bismuth, copper, nickel, silver, tellurides of bismuth, cobalt sulphoarsenite, nickel sulphoantimonite, silver sulphobismuthites, lead-antimony-bismuth sulphosalts, oxides of tin, titanium, tungsten and some others. The revealed specificity of material composition of the ores indicates the belonging of this deposit to the gold-rare metallic ore-formational type.
Strength Assessment of Enclosing Rocks from the Coal Deposits of South Yakutia Via the Point Load Method
Authors: Melnikov A E , Grib N N , Rochev V F
Published: April 2020

The paper presents some results of comparative tests for the strength properties of enclosing rocks from the coal deposits of Southern Yakutia. For example, the ultimate compressive strength of fine-grained sandstones from the Chulmakansky coal deposit was determined in two ways. In the former case, the authors determined maximum collapse pressure for cylindrical samples. In the latter case, arbitrary-shaped samples were tested by loading a sample with opposing indenters of conical shape. As a result, it was established that the difference in rock strength characteristics determined in the above-mentioned ways, does not exceed 20%. When determining rock strength by loading arbitrary-shaped samples with opposing indenters of conical shape, overestimated values are obtained as compared to the classical test. Nevertheless, point load method can be used in order to promptly determine the strength characteristics of sandstone in the course of mining operations provided the number of test samples in a series is increased.
Changes of Characteristics of Soil Contaminated by Oil Products during Electrochemical Cleaning
Authors: Shulaev N S , Pryanichnikova V V , Damineva R M
Published: April 2020

The article deals with the actual problem of cleaning and remediation of soils contaminated in oil industry. The transmission of a small electric current through polluted soil leads to a decrease of pollutants concentration because of various processes. The paper presents the results of the study of changes in soil characteristics as a result of passing the electric current. Such parameters as the content of chlorides and organic matter of the soil (humus), electrical conductivity, density and soil moisture were studied. The research showed that carrying out low amperage electricity through the soil contaminated with oil and highly mineralized reservoir waters using does not entail critical changes in the soil properties. It was proved that this method can be effectively applied on various soils of oil fields and will not impede the subsequent restoration of plant communities at the treatment site.
Distribution and Regularities of Placing Clinic Raw Material in the Far East of Russia
Authors: Gadiyatov V G , Kalugin P I
Published: April 2020

Shows the distribution and patterns of placement of gemstone raw materials deposits of Primorsky Krai. Mineragenic zoning of the territory was carried out. The taxononomic units of different hierarchical levels are taken as the basis. The province is taken as the largest unit. The selected Far Eastern province includes the Sikhote-Alin sub-province and the Primorsk region, including the Upper-Bureya, Upper-Anyuy, Bikin, Dalnerechenskaya, Ussuri and Coastal mineragenic zones. The characteristic of ore regions with known deposits and promising manifestations of noble opal, sapphire, zircon, chrysolite, agate and garnet, which constitute the mineral and raw material base of colored stones of the Russian Federation, is given.
Mathematical Modeling of the Process of the Gas Generation and Gas Purification of the Biogas on Polygon of Residential Solid Waste
Authors: Medvedeva O N , Perevalov S D
Published: April 2020

The article presents the prospects of using biogas fuel. Mathematical model of processes proceeding at the gas purification in amine installation unit has been developed. A software package has been proposed that allows to determine the quantitative yield of methane, design and thermal insulation characteristics of a biogas reactor by anthropogenic load. We determine the main parameters and energy efficiency of the biogas plant for the conditions of the Saratov, efficiency of energy-saving measures at the biogas fuel usage is shown. The practical significance of the work lies in the use of the developed model in the design of anaerobic reactors on polygon of residential solid waste (RSW), small settlements and microdistricts distant from other sources of energy supply.
Analysing and Assessing the State of Safety Culture at the Mining Industry Facilities in the Irkutsk Region
Authors: Aleksandrova A Yu , Timofeeva S S
Published: April 2020

Safety at work is an important factor in the successful operation of an enterprise. In practice, it is quite difficult to achieve safety at work, but there exist all necessary conditions for this. The article considers the role of the systematic management of an enterprise, which helps to ensure safety at all stages of the production life cycle. In the paper, we discuss the system of organizational culture that supports the management system, the concept of safety culture and how it can be implemented. Also in this study, we discuss the history of systematic safety management drawing on the experience of mining enterprises in the Irkutsk Region. The article contains practical research and calculated data on the evaluation of safety culture at such enterprises as Angasolsky Crushed Stone Plant, Pereval Quarry, and the stone-cutting production of Baikalquartzsamotsvety OJSC. The article concludes with a discussion of how to achieve high safety culture at these enterprises taking into account the regulatory environment that can encourage the development of the systematic safety culture management without this being a burden for organizations.
Prospects of Wasteless Technologies of Selective Alcohols Oxidation
Authors: Zhukova I Y , Papina E N , Tyaglivaya I N
Published: April 2020

The effect of aliphatic and heterocyclic amines on the selective oxidation reaction of alcohols by the catalytic system 4-acetylamino-2,2,6,6-tetramethylpiperidine-1-oxyl (4-acetylamino-TEMPO) - iodine was researched. Diethylamine, triethylamine, piperidine, 2,2,6,6-tetramethylpiperidine (pKa 11.01-11.12 ) and pyridine, 4-acetylpyridine, quinoline, isoquinoline ( pKa 4.8-5.4) were used for research. An almost waste-free method was developed for preparation esters from aliphatic alcohols by oxidizing in a two-phase medium CH2Cl2 - an aqueous solution of NaHCO3 by a two-mediator 4-acetylamino-2,2,6,6-tetramethylpiperidin-1-oxyl - iodine catalytic system, which allows selective oxidation alcohols in one stage. The results of the study may find application in the chemical, pharmaceutical and agrochemical industry, since the developed method is environmentally and economically beneficial, and the oxidation of alcohols in order to obtain various carbonyl and carboxyl compounds in these industries is one of the priority areas.
Development and Implementation of Methods for Behavioral Safety Audit Conducting in the Fuel and Energy Complex
Authors: Glebova E V , Volokhina A T , Vikhrov A E
Published: April 2020

The analysis of the accident and industrial injury statistics shows that the majority of accidents and industrial accidents (more than 70%) are caused by the mistakes of the operational personnel servicing the hazardous production facilities connected with violation of requirements of the organization and production of hazardous works. One of the priority directions of the state policy of the Russian Federation in the field of industrial safety till 2025 is the development of industrial safety culture, awareness of personal responsibility for a condition of industrial safety, formation of the intolerant relation to violations of safety requirements, in particular, due to implementation of scientific and technical achievements and the best practices. This study proposed a new approach to ensuring safety on objects of fuel and energy complex establishing rules of conducting the behavioral safety audit (BSA), assessment of identified hazardous actions and use of preventive measures. Within approbation of this new approach to safety ensuring we have made the procedure of mathematical processing of results of 264 conducted BSA on one of gas transmission companies. Implementation of approach boosts safety culture of production, prevention of the industrial accidents and accidents caused by unsafe behaviour and actions of workers.
Cleaning of Atmospheric Air from Organic and Inorganic Industrial Toxicants and Microorganisms by High-Tech Functional Sorbent
Authors: Evsina E M , Alikova T V , Zolotareva N V
Published: April 2020

The physicochemical and absorption properties of the new sorbent obtained by mixing finely ground 100 g of Portland cement - 500, 100 g of the molded glass of the Astrakhan region with 100 cm3 of 10% aqueous sodium chloride solution and forming granules of the required size (from 0.5 to 5 cm in diameter), the formed mass after setting and hardening is placed in running water and maintained until the water has a negative reaction to chloride ion, after drying at 80-850 ° C, the granules are placed in a 40% aqueous solution of diethanolamine (DEA) for 1 h, then the granules are transferred to a sieve, wherein the excess of DEA is removed, and the granules are dried in a stream of air (fan) at 20 - 400 C. From the physico-mechanical characteristics, the main ones are defined as follows: bulk density, water resistance, vibration wear, mechanical crush strength at T 105 ° and 300 ° C, conditional mechanical strength, abradability, grindability and particle size distribution. These indicators are interrelated and allow you to predict changes in the strength characteristics of adsorbents and sorption-filtering materials in the processes of their long-term operation. Experiments have shown that the sorbent strongly adsorbs DEA and DEA salts, which are not destroyed by water and are not diluted with acid solutions. Sorbent is used to purify atmospheric air from acidic gases and water vapor, such as hydrogen sulfide, sulfur dioxide, carbon dioxide and microorganisms. The results indicate high sorption properties of the sorbent, which allows purifying atmospheric air from acidic gases to below 0.01 MPC.
Combined Scheme Application for Liquid Hydrocarbons Pumping Through QMU
Authors: Ayupova A , Artemyeva E
Published: April 2020

For accuracy of quality parameters measurements and product sampling it is necessary to ensure that flow of hydrocarbons through QMU was enough to meet requirement of isokinetic condition of sampling device. Currently, this is achieved by using of pump or pumpless control circuit. This paper discusses advantages and disadvantages of these schemes, as well as an alternative scheme for pumping liquid hydrocarbons through QMU. Possibility of fluid pumping without a pump and flow control with pressure regulator is discussed and justified. The problem solution of ensuring equality of product speed in both branches of parallel pipelines is achieved by selecting such a ratio of cross-sectional areas of hole FP and collector, which creates a pressure difference between the QMU input and QMU output of the pipeline necessary to overcome hydraulic resistance in it at a speed equal to the speed in the collector.
Specific Features of the Composition of Petroleum from the Usinsk Oil Deposit
Authors: Korol I , Petrenko T , Chuikin D
Published: April 2020

The research studied petroleum from Permian-Carboniferous fields from the Usinsk oil deposit in the north-east of the Komi Republic, Russia, well-bores No. 5339 (middle production zone) and No. 2956 (upper and middle production zone). Permian-Carboniferous petroleum has high viscosity (up to 11980 MPa*s), density (up to 0.987 g/cm3), average grade of sulphur (up to 2.5% mass) and are hard to recover. The element, component and micro-element composition of the petroleum and its fractions was established. The share of vanadyl and nickel porphyrins was measured by chromatographic separation. The research has established that the petroleum and fractions from the Usinsk oil deposit are a complex mixture of hydrocarbons and hetero-organic compounds with an elevated aromatic level and with oxygen-containing compounds playing the most important part. Total content of micro-elements in the studied samples does not exceed 0.5% mass of the petroleum’s mass. The concentration of microelements in petroleum is reducing in this order: Cl, Ca, Na, V, Ni, Mg, Fe, Si, Ba, Cs, Cu, Zn, Mn, Co, Cd, P. The share of vanadyl porphyrins (VO-P) is higher than that of nickel porphyrins (NiP). The distribution of VO-P by fractions for the petroleum in both well-bores is the same and reduces in terms of resins-asphaltens-oils. The distribution of NiP does not have a clear correlation. This distribution can be associated with the chemical composition, thermodynamic and kinematic stability.
Occupational Risks in the Extraction and Processing of Mineral Raw Materials
Authors: Gorlenko N V , Leonova M S , Murzin M A
Published: April 2020

The aim of this paper was to assess the man-made risks arising in the process chain from the extraction of primary raw materials in the form of quartzite and its further processing into the final product in the form of silicon. As the objects of research, we chose quartzite extracting enterprises, Cheremshansk Quartzite Mine and Kremny JSC which processes quartzite into silicon. To assess the occupational risk, we applied the method of assessing the individual occupational risk (IOR) level developed by the Klin Institute of Occupational Safety and Working Conditions. As a result, it was established that, in general, the level of occupational risks in the extraction of quartzite corresponds to the “average” level of risk. The occupation of Screener was classified to have the highest level of IOR (0.2). For the most part, a significant contribution to the level of occupational risk for the considered occupations is made by the dust factor, as well as - for the occupations connected with the steering of large-sized machines - by general vibration. In the processing of quartzite, the IOR level corresponds to the “average” level of risk in most occupations. However, for some of the workers, the risk level is set to the “high” value. This is due to significant concentrations of dust in the air of the working area, as well as unfavorable microclimate parameters.
Analysis Risk Factors Forest Ecosystems the Krasnoyarsk Territory
Authors: Rihter E E , Taseiko O V
Published: April 2020

A database on indicators of forest ecosystems for risk assessment has been formed. The method risk assessment forest ecosystems in the conditions of intensive anthropogenic impact by the multidimensional method are developed. An example of environmental risk assessment based on ground-based observations is shown, forest ecosystems status indicators, space sensing obtained by remote sensing methods. Rationing factors were performed using the coefficient of the variation series. Combining heterogeneous data is carried out on a single normalized scale, taking into account the characteristics of authenticity and taking degree participation in each factor. With help cluster analysis the ranking territories performed. In the course data analysis for 2018, 4 clusters were identified, for each which priority risk factors are analyzed. The greatest contribution is made by climatic factors and high population density.
Temperature Field of the Permafrost Zone in Northeastern Siberia
Authors: Spektor V B , Shestakova A A , Torgovkin Ya I
Published: April 2020

The Northeastern Siberia includes the coasts of the Sea of Okhotsk, part of the North Siberian Lowland, the Central Siberian Plateau and the Lena Delta. Based on field measurements and calculations, this study characterizes the regional distribution of permafrost temperature in the layer of zero annual amplitude (ZAA). Permafrost temperatures vary over a wide range from -2 to -13°C. Analysis of ZAA temperatures indicates that permafrost is transient in much of the study region. In its northern part, especially where diluvial deposits are present, temperature profiles are isothermal or have inverse (negative) gradients. The temperature field in the areas of pre-Quaternary carbonate rocks is characterized by wide scatter of the values and often by higher ZAA temperatures. This is due to the karst process in carbonate rocks which is associated with heat release. This process likely occurred below the bottom of post-catastrophic basins, resulting in greater heat flow and disturbance of the equilibrium state of permafrost. The layers of dolomite flour over the pre-Quaternary carbonate rocks provide additional evidence of the high water contents in upper permafrost during deposition of the diluvial sequence. Temperatures below ZAA in these areas may reach -4°C, while similar settings without carbonate rocks have temperatures below ZAA as low as -8 to -11°C. This study has confirmed the high variability of ZAA temperatures in the region.
The Prospects of Expanding the Raw Materials Source of Gold-Silver Ore Occurrence in Sentyabrskoe SV (Chukotka Autonomous Area)
Authors: Grebennikova A A , Sayadyan G R
Published: April 2020

The Chukotka autonomous area of Russia holds one of the leading positions in Russia in the gold mining. Various formational types’ deposits are known to this region. Among the most industrially interesting types are bonanza gold-silver sites in Kupol, Dvoinoye, Sentyabrskoe and many others. This article studies the prospects of extending the raw materials’ source of the gold-silver ore occurrence in Sentyabrskoe on the basis of its comparison with the known sites of this type.
Reliability of Billboards Fixing Constructions in the Operational Period
Authors: Kaverzneva T T , Nikolaeva I P , Idrisova J I , Solovev D B
Published: April 2020

In the article the control actions providing reliability of billboard fastening during the whole term of operation is proved. Also correction of the operational period of billboard fixing constructions is justified. The example of testing calculation of a billboard rack diameter, which satisfies the permissible values of tension in the rack basis under loading of wind force is given. Due to the frequent cases of billboards falling under the wind load influence in the different cities all over the world, inspection actions for control of thickness of supporting rack are offered.
Development of the Theoretical-Practical Model of Protection of the Means of Transport of Radioactive Materials
Authors: Tumanov A , Solovyov A , Kulinkovich A , Tumanov V
Published: April 2020

Ensuring the safety of transportation of radioactive materials is of great importance due to the presence of the potential risk of damage to people, the environment and property during transportation, loading and unloading operations and intermediate storage. This article describes the means of storing liquid radioactive waste, as well as the process of their transportation. During the study, emergency situations during the transportation of LRW were considered. A security model has been developed for the storage of radioactive materials during multimodal transport.
Vapor Recovery Unit of Gasoline from the Tanks of Filling Stations with Gas-Dynamic Cooling
Authors: Vlasenko V S , Karakozov A A , Perveev A A
Published: April 2020

This study presents a gasoline vapor recovery unit of a gas station, which is based on a vortex tube and a shell-and-tube heat exchanger. The calculation of system is made and technological scheme is presented. Shown effectiveness of the device and drawn conclusions about its rationality
Turbidity Caused by the Construction of a Bridge in the Water Extraction Zone
Authors: Seleznev V A , Rahuba A V , Selezneva A V
Published: April 2020

The article considers turbidity in a water storage basin during dredging in water extraction zones for household and drinking needs. Turbidity zones are calculated with the help of a math model based on the solution to the shallow water equations in the advective diffusion equation for impurity distribution. The model was verified on the basis of a field experiment in the Kuibyshev water storage basin. The data on additional turbidity in the water extraction zone collected with the help of a suction dredge shows that the turbidity is higher than the maximum allowed concentration (MAC), but when a crane boat is used, the calculated value does not exceed MAC.
Assessment of Air Basin Pollution within the Limits of the Technogenic System (Dalpolimetall) Impact Using Mathematical Modeling
Authors: Filatova M Yu , Krupskaya L T , Golubev D A
Published: April 2020

The article presents the results of research of air technogenic pollution within the limits of the natural-mining system impact formed by Dalpolimetall mining-metallurgical enterprise activity in the Primorsky Krai. Its development is due to intensive polymetallic ore development and accumulation of significant amount of its processing toxic waste, stored in two tailing dumps, located at the area of 80 hectares, withdrawn from the forest land fund, their volume being 32.2 mln tons. The studies found that in general the waste on the surface of the tailing dump is of the second class of danger (high-hazard), which is currently in the stage of active formation, being a powerful negative impact factor for the environment. The study of the air pollution degree, carried out by gas survey on transversal profiles, shows that the largest number of different heavy metal compounds is contained in the dust selected for analysis near the tailing dump. Its maximum concentration, reaching 86 MAC, was revealed near the concentrating factory. The average concentration throughout the territory of the object under study is 38 times higher than the allowable limits. High concentrations of carcinogenic elements (arsenic, chromium and antimony) are found in the dust samples. The assessment of the air basin impact carried out by the method of computation monitoring using GIS-technology and the Ecologist Software, allows to assert that its pollution by mineral processing waste within the limits of Dalpolimetall impact in Dalnegorsk refers to an extremely high level for toxic dust, heavy metal compounds and sulfate-ion aerosols. The results of the research of air basin technogenic pollution using mathematical modeling allowed to reveal spatial and temporal regularities of the main pollutants distribution.
Behaviour of the Ice Cover under the Conditions of Flexural-Gravity Resonance with the Pair Movement of the Load
Authors: Zemlyak V L , Vasilyev A S , Rogozhnikova E G
Published: April 2020

The nature of ice cover failure technology implemented with amphibian hovercrafts (AHC) is represents generation of a wave system in an ice cover under the effect of moving load on the ice cover. If gravity wave in water accompanies flexural wave in an ice plate, this combination of waves will be called flexural gravity wave (FGW), the speed of moving load υc equal to the speed of FGW propagation will be called critical. However, during the implementation of ice breaking works by single (AHC), AHC’s parameters may appear insufficient for failure of the ice cover of specified thickness at specific ice conditions. In these cases, efficiency of ice breaking works may be increased by simultaneous use of several hovercrafts, i.e. by interference of FGWs generated by hovercrafts. This work is dedicated to research of the ice cover deformation during the motion of several (paired) loads over it. a comparison of the theoretical and experimental data obtained confirmed the operability of the selected criterion for the failure of the ice cover, which allows it to be used to develop practical recommendations for use FGWs generated by several loads to failure the ice cover. Original results obtained.
How Adding Wood Dust Affects the Properties of Composite Construction Materials
Authors: Cherkasova N G
Published: April 2020

Composite materials based on wood dust are promising construction materials that have recently gained traction in the market. Their success is attributable to the benefits such materials represent for construction: they are eco-friendly and resistant to atmospheric effects; they are well-disposable and easy to machine. Utilizing wood dust is essentially recycling the waste of woodworking, furniture-making, and lumbering industries, as well as the waste associated with the use of low-grade wood. The present paper covers the processes that occur in the structure of a composite materials when using abrasive wood dust as a filler. The research team has made pilot samples of various composition; analysis revealed the composition affected such properties as density, flexural strength, and water absorption. The effects were further analyzed to attribute them to specific mixture components. Refining the production technology and the recipe is one of the key objectives of producing and applying constructional composites today. Maximizing the performance while reducing the energy costs and the production costs requires a focus on rheological properties. The properties of a composites material mainly depend on the type and properties of its organic filler. Understanding that is fundamental to optimizing the composition, i.e. to finding such filler that will provide sufficient strength at a maximum fill factor. It is also known that using fillers makes the composition significantly cheaper.
Analysis of Methods for Determining Emissions from Oil Storage in Russia and the United States
Authors: Levitin R E
Published: April 2020

There are different approaches to the standardizing of hydrocarbons’ emissions in Russia and the USA. In Russia there are levels of techniques of vaporizations’ determination, of ecological standards of emissions, there are norms of natural losses. In the USA the technique is identical at different services. The Russian techniques are much like to American. Some differences and uncertainties in the emissions’ determination by different techniques are presented in the paper.
The Research and Well Performance Simulation under Conditions of West Siberia
Authors: Levitina E E , Mamchistova E I , Nasyrova A I
Published: April 2020

The paper proposes a new method of calculating the pressure at the pump intake, taking into account changes in the density of the gas-liquid mixture in the well depth. An algorithm for performing the pressure calculation is presented. Graphs of pressure distribution in the well depth with different gas content in comparison with the traditional method for calculating pressure are given. The importance of taking into account the physical properties of gas depending on the depth was proved.
Development of the Underwater Robotics Complex for Laser Cleaning of Ships from Biofouling: Experimental Results
Authors: Bykanova A Yu , Kostenko V V , Tolstonogov A Yu
Published: April 2020

Periodic cleaning of a hull from biofouling provides high efficiency motion of a vessel. Inspection and cleaning of the underwater part of the vessel afloat is usually carried out by divers aimed with an underwater video system, non-destructive devices for hull structures monitoring, as well as tools for cleaning surfaces from biological fouling and corrosion products. The aim of the study was to develop a new technical tool for remote survey and cleaning of vessels based on the remotely operated uninhabited underwater vehicle (ROV) with build-in underwater laser cleaning equipment. As a result of the research, the prototype of an underwater robotic inspection and laser cleaning system for vessels afloat was designed and developed. The experimental results of the motion control system of the ROV with a hybrid propulsion system both in air and under water are presented. The efficiency of the laser cleaning equipment in stand-alone mode and as part of the vehicle was confirmed. The technical solutions obtained during the development of presented cleaning system allow efficiently and safely inspecting and cleaning the hull without docking of the vessel to be conducted.
Recycled Sorbents for Wastewater Treatment
Authors: Pugacheva I N , Zueva S B , Molokanova L In
Published: April 2020

The today’s continuous industrial growth of major industrial centers has caused the discharge of heavy metal-polluted wastewaters to skyrocket. Improperly treated wastewater may reach natural water reservoirs, where heavy metals will accumulate in water and bottom sediments, resulting in secondary pollution and thus deteriorating the ecological conditions. Thus, it is imperative to improve the existing wastewater treatment technologies and invent new ones, as well as to find new efficient sorbents. Meanwhile, a variety of enterprises generate waste that could be used for adsorption. For instance, the textile industry generates considerable amounts of pulp-containing waste that could be used to make promising sorbents. The paper presents a method of producing powdered sorbents from pulp-containing waste of textile industry. The team researched how the pH of thus produced sorbents and the mixing time affected the adsorption of heavy metals (nickel). The finding is that the produced powdered sorbents are suitable for tertiary wastewater treatment.
Reducing the Level of Injury through the Management of Professional Stress
Authors: Kuleshov V V , Serdyuk V S
Published: April 2020

The article characterizes the importance of occupational risk assessment in order to reduce injuries. The study show that the level of professional stress of employees influences the magnitude of occupational risk. A study was conducted to assess the professional stress of workers according to the method of K. Weisman The influence of the factors of a healthy lifestyle and the “work-family conflict” on the level of professional stress in the engineering industry has been confirmed. Authors propose and implement actions to improve the stress tolerance of workers and reduce the level of professional stress. The study conducted confirms the effectiveness of the implemented actions to reduce the level of occupational risks in the organization.