bluuebunny/crossref_metadata_2025_split huggingface dataset:
Study of the effective performance of the diesel engine when working on methanol and methyl ether rapeseed oil
Authors: Likhanov V A , Lopatin O P , Yurlov A S 
Published: December 2019

Abstract
The experience of solving the world’s environmental problems from the use of diesel engines allowed us to develop numerous ways to solve them, including the transfer to work on alternative fuels. The article presents the classification of alternative fuels. The article discusses the use of biofuel for the diesel engine. The use of alternative biofuels with different chemical composition and local conditions leads to the distinctive performance of the diesel engine. Therefore, for the scientific representation of the actual picture of the power and economic indicators of the diesel engine, experimental studies were conducted when it was operated on methanol and methyl ether of rapeseed oil. According to the results of laboratory and bench studies of load working processes of a diesel engine running on methanol and methyl ether of rapeseed oil, important information about hourly and specific fuel consumption, filling coefficients and excess air, effective efficiency and exhaust gas temperature were obtained. At the same time dependences of influence of modes of operation of the diesel engine on characteristics of power and economic indicators are established and their numerical values are defined. The presented research performance and economic performance of diesel engine demonstrate the applicability of methanol and methyl ester of rapeseed oil as an alternative bio-fuel is not only to improve the excellent service standard and performance indicators, but also to reduce the toxicity and smoke opacity of the exhaust gases, since alcohol, with its more simple structure and small size of molecules is one of the determining factors for a more “clean burning” fuel.
Mass transfer apparatus for a wide range of environmental processes
Authors: Merentsov N A , Golovanchikov A B , Topilin M V , Persidskiy A V , Tezikov D A 
Published: December 2019

Abstract
The paper presents the construction of a continuous multifunctional mass transfer apparatus which can perfectly adjust to meet technological requirements for a wide range of environmental, chemical, petrochemical, biological processes. The processes include absorption, adsorption, desorption, chemisorption, ion exchange, rectification, drying, extraction, gas scrubbing. The apparatus can carry out processes under the influence of intensifying electric fields of a given intensity, as well as performance of the nonisothermal mass transfer processes and the gas and liquid phase exothermic and endothermic catalytic reactions. The article also provides the most promising modifications of the developed mass transfer apparatus and the main details relating to the durability and adjustment to meet the requirements of a particular mass transfer process. The authors emphasize the prospects of using modifications of the developed mass transfer apparatus as a foamy bubbling dust collector for industrial gas scrubbing and for performance of electro-absorption, electro-adsorption, electro-desorption, ion exchange under the influence of a given electric field intensity in the environmental equipment for industrial applications and urban economy.
Relief flow swirlers to control wax deposition formation inside downhole equipment
Authors: Bashmur K A , Petrovsky E A , Geraschenko Yu A , Makolov V A , Shadchina Yu N , Tynchenko V S 
Published: December 2019

Abstract
The present study describes problems of wax deposition formation on the surface of oil field equipment. In particular, the problem of wax deposition prevention inside tubing walls is considered. Wax prevention techniques and wax removal techniques were analyzed and the main advantages and disadvantages of these techniques were highlighted. The technique for controlling wax deposits by means of fluid swirl is proposed, which is carried out using a process module for controlling downhole deposits based on a flow swirl. Simulation flow modeling in the direct-flow swirler was performed. The simulation was carried out with the help of SolidWorks Flow Simulation program for different profiles of flow section, number of turns, and swirling pitch. An increase in temperature due to a fluid swirl and a significant pressure gradient in the wall layers of the tubing after the swirler were revealed.
Mathematical model and numerical algorithms to analyze gas filtration process in a porous medium
Authors: Ravshanov N , Aminov S , Kravets O Ja 
Published: December 2019

Abstract
The paper deals with the problem of gas filtration process in a porous medium using a mathematical model of an object; the model is described by a nonlinear partial differential equation and the corresponding boundary and internal conditions. The paper presents the main stages in construction of mathematical model of the process of gas filtration in porous media, taking into account the changes in hydrodynamic parameters of the object of study. To solve the above problem, the following numerical methods have been used: local-one-dimensional schemes and longitudinal-transverse direction schemes. To solve the problem of nonlinear gas filtration in a porous medium, several methods of constructing an iterative process have been checked. To study the responses of the principal parameters of the process, a series of computational experiments on a computer, their analyses and conclusions are given in the paper.
Discharge-impulse methods application in technologies of mineral resources mastering
Authors: Korostovenko V V , Korostovenko L P , Stepanov A G , Sukhanova A V 
Published: December 2019

Abstract
Present-day condition and objectively established trends of developing mineral and crude base of non-ferrous metallurgy have predetermined two main directions in mineral raw materials processing. The first direction is based on some traditional technologies of free-milling ore processing with receiving of mono selective concentrates at the enrichment stage with following recycling them using already known pyro-, chemico-, hydrometallurgical methods. The main way of developing this direction is invention of high-performance combined processes and combined technological schemes. The second direction covers difficult raw material. It is based on combined technologies providing a discharge of advantageous components into the mono selective concentrates at the step of enrichment. At the other steps – transfer of refractory mineral assemblages into a polymetallic products and their further selection using enrichment, pyro- and hydrometallurgical methods. Among various methods of influence on the mineral assemblages, there are two groups, applicable in combined technology systems, to highlight. These are enrichment based on energy and chemical-metallurgical impacts at the finalizing step, where the necessary increase of completeness and complexity of crude ore applying might be provided only by processing it using combined technologies, which optimally match the both of selected groups.
Influence of carbon-containing additives on sintering of limestone-nepheline furnace charge in alumina production
Authors: Sizyakova E V , Fokina S B , Ivanov P V 
Published: December 2019

Abstract
The article is devoted to the influence of brown coal additives on the sintering of the lime-nepheline charge in the technology of alumina production from nepheline. It is shown that carbon-containing materials added to the limestone-nepheline charge intensify sintering, and thus, contribute to a more uniform heat distribution along the furnace, improve the passage of the sintered material in the chain curtains, accelerate interaction of the charge components and increase recovery of alumina from the sintered mass. The mechanism of influence of coal during its combustion on the passage of solid-phase reactions in the charge is studied. Fossil brown coals with a high content of volatile substances and carbon graphite materials were used as coal additives.
Phytoremediation efficiency of duckweed communities for mining enterprises wastewater treatment from nitrogen compounds
Authors: Petrov Denis S , Kuznecov Vladimir S , Suprun Igor K , Zhuravkova Maria A , Solnyshkova Margarita A 
Published: December 2019

Abstract
The main purpose of the work was to determine the methods of mining enterprises wastewater secondary treatment from nitrogenous compounds. The chemical analysis of wastewater was carried out, and substances with exceeding concentrations were established. The accumulating power of indigenous species of higher aquatic vegetation has been estimated. The absorption regularities of nitrates of duckweed (Lemna minor) in solutions with different concentrations were determined. The expediency of duckweed cultivating with the aim of phytoremediation has been proved.
Working out of an effective energy-saving technology for crushing of worn out tires on a hammer mill
Authors: Ganin E V , Antimonov S V , Kuzmin A Yu 
Published: December 2019

Abstract
The article discusses the development of an effective technology for the conversion of worn out tires from the sight of energy consumption and depth, by preproduction in various types of solvents, followed by crushing. The use of methods of physical impact on the material, in particular, the procedure of the use of aggressive media, is justified. The results of experimental researches showed that breakage reduces energy consumption, improves the separation of metal and textile from rubber, increases the yield of rubber under the influence of various aggressive media (solvents).
Analysis and calculation of optimum parameters of electric arc furnace
Authors: Rakhmonov I U , Reymov K M , Najimova A M , Uzakov B , Seytmuratov B T 
Published: December 2019

Abstract
In this article, the role of electric arc furnace in the process of “Uzmetkombinat” is regarded, as well as an analysis of the mode of the unit integrated processing of steel, the continuous casting of steel. The actual value is the specific energy consumption by type of equipment shop EAF for 2018.
Effect of diffusion processes on the movement and cooling of droplets in the air washers of heat power systems
Authors: Pushkarev A E , Varfolomeeva O I , Khvorenkov D A , Pushkareva L A 
Published: December 2019

Abstract
The work explores the processes of movement, evaporation, change of temperature and weight of water droplets in the air washers of heat power systems. The motion of the evaporating drop is described by the variable-mass body mechanics equation without regard to reactive force. Two laws of movement resistance of water droplets in the air washer are considered. The diffusion and evaporation of droplets are calculated using traditional equations, taking into account the conditions of the air washer. Changes of droplet temperature were found from the heat balance equation. Numerical calculations of the change of the weight and temperature of the droplet are given depending on the distance droplet travelled in the air washer. Conclusions have been drawn on the effect of evaporation and changes in droplet temperature on mechanical movement and associated processes. A rational range of droplet sizes is defined for efficient operation of air washers.
Influence of ethanol on the combustion process and soot formation in the diesel cylinder
Authors: Kozlov A N , Anfilatov A A , Chuvashev A N 
Published: December 2019

Abstract
Ethanol is an attractive alternative fuel because it is a renewable bio-based resource and it is oxygenated, thereby providing the potential to reduce particulate emissions in compression–ignition engines. Thus, the use of ethanol in a diesel engine can simultaneously solve two important problems - the replacement of non-renewable diesel fuel and improving the environmental performance of diesel by reducing soot emissions into the atmosphere. Thus, the use of ethanol in a diesel engine can simultaneously solve two important problems - the replacement of non-renewable diesel fuel and improving the environmental performance of diesel by reducing soot emissions into the atmosphere. The presented work considers the main reasons for reducing the formation of solid particles in the diesel cylinder, taking into account the transformation of the combustion process. The article presents the results of experimental studies to reduce the soot content in the exhaust gases by direct injection of ethanol into the combustion chamber with ignition from the burning fuel jet. The implementation of this method somewhat complicates the design of the diesel engine but allows you to control the combustion process and exclude the maximum amount of diesel fuel. The characteristics of the combustion process of alternative fuels in the diesel cylinder and the main patterns of change are described. In conclusion, the main problems of the use of ethanol and promising directions of its use as a fuel for the engine with compression ignition are considered, taking into account the peculiarities of the combustion process and the formation of harmful components of exhaust gases.
Dynamic method of controlling the traction force driving wheels of vehicle
Authors: Egorov A V , Lysyannikov A V , Kaizer Yu F , Dorohin S V , Smirnov D U , Bogdanov E N , Lysyannikova N N , Kuznetsov A V 
Published: December 2019

Abstract
The contemporary stage of development of methods and means of control traction force developed on the driving wheels of vehicles is used as one of the diagnostic parameters of the angular acceleration of the drive wheels and the angular acceleration of transmission units, however, scientific and technical studies of the methods take into account the law of generation of mechanical power during one revolution shaft engine vehicle. Also developed methods that are used to control the torque developed by the drive wheels of the vehicle, the acceleration time to a certain speed. At the contemporary stage of development of methods and means, there is an incomplete justification for the use of angular accelerations of transmission units, driving wheels for controlling traction force developed on the driving wheels of vehicles, and the non-use of linear accelerations of vehicles for controlling developed traction force. No disadvantages from the above is a dynamic method of controlling traction force the drive wheels of a vehicle, the scientific and technical justification of which is given in this article.
Monitoring the current state of rural territories ecology in the Oryol region and some areas of their environmental development
Authors: Afanasieva E E , Koreva O V , Kondrashova I N , Kondykova N N , Tikhii V I 
Published: December 2019

Abstract
This article proves that one of the main conditions for improving the ecological condition of rural areas is continuous monitoring. The current environmental situation in rural areas of almost all regions of the Russian Federation is characterized by many problems which impede their sustainable socio-economic development. In the article, based on the example of the Oryol region, an assessment is made of the environmental situation prevailing in rural areas, and typification of the regions is carried out. The authors formulated a set of proposals, the implementation of which will improve the environmental situation. Particular attention is paid to the development of the implementation of the proposal for the introduction of innovations in the production of agricultural products based on organic farming. substantiated the need to develop state programs for the development of environmentally friendly organic farming, adapted in each region in accordance with the peculiarities of its development and the climatic conditions of agriculture, and presented a set of measures that make up their basis. The implementation of the proposed measures will improve the environmental situation in rural settlements of the country as a whole, and, in the Oryol region in particular, which will contribute to the rural areas entering the trajectory of dynamic sustainable socio-economic development.
Technology of receiving a ferriferous pigment from production wasters of synthetic rubber
Authors: Luzina M S 
Published: December 2019

Abstract
In article the technology of processing of one of production wastes of synthetic rubber – the fulfilled adsorbent applied in the course of production of butadiene and containing significant amounts of compounds of copper and iron is offered. The description of laboratory researches on receiving from the specified withdrawal of a ferriferous pigment for paint and varnish and construction materials and also copper vitriol is shortly given. The schematic diagram of installation developed by results of the conducted researches is provided, the short description of technological process is given.
Experimental research of the diesel engine with modernized system of air supply
Authors: Razuvaev A V , Biryuk V V , Blagin E V 
Published: December 2019

Abstract
This article deals with experimental research of the diesel engine with modernized system of air supple (MSAS). This system considers steam injection in turbo-compressor which provides increase of its power and also increase air supply in engine cylinders. The results of the experiment show that specific fuel consumption will be decreased on 2.6%, gas temperature before turbocompressor will be decreased on 87 °C. Indeed, diesel power increase of 4% (from 617 kW) was achieved without increase of the cylinder heat temperature.
Development of standards for industrial control materials to improve quality control of rubbers
Authors: Efremova M A , Sulaberidze V Sh 
Published: December 2019

Abstract
The development of standards for industrial control materials is the basis for improving the quality control of commercially available synthetic rubbers. The presence of such technical standards is important for the formation and implementation of an integrated approach of modern quality control. In developing the standards, international experience was used, adapted to the domestic characteristics of production and technical documentation, which contributes to the development of the industry’s innovative infrastructure, the elimination of technical barriers in the interaction of various industries and the acceleration of the introduction of new types of rubbers. It is shown that such works unite the industry to solve complex problems, contributing to the additional interaction of science and production.
Development of theoretical bases of analysis of reliability of marine oil and gas constructions with regard to temperature impact
Authors: Starokon I V 
Published: December 2019

Abstract
Offshore oil and gas installations, located on the offshore fields are exposed to intense heat. The result is a change of temperature condition and having variable thermal stresses that cause fatigue damage and reduce resource. The paper proposes a method which allows to simulate the processes of heating and cooling offshore oil and gas installations in various environmental conditions, and proves the necessity of taking into account the thermal effects in the evaluation of their resource.
Static and dynamic approach to estimation of spring water hardness cation content as a natural factor of groundwater formation
Authors: Vasyukov A E , Korzhavyi A P , Nikulina S N , Zhukova Y M 
Published: December 2019

Abstract
To assess the degree of influence of natural factors on the groundwater mineralization, it is proposed to simultaneously consider in a static and dynamic position the results of titrimetric determination of the total mineralization and concentration of calcium and magnesium ions in spring water. This is shown by the example of four springs located in the territory of Kaluga. The study made it possible to establish: the average annual background concentrations, as well as to justify the relative variable for groundwater in springs No. 1, No. 3 and No. 4 and the influence of the natural factor on the formation of the total hardness and concentration of calcium and magnesium ions in the study period, relatively stable for groundwater in spring No. 2 by the value of the molar ratio of the concentrations of calcium and magnesium ions.
FMMA and FMECA for analysis of reliability of a wind turbine
Authors: Magomedov I A , Magomadov V S , Rahimov A A , Alikhadzhiev S Kh , Gudaev M-A A 
Published: December 2019

Abstract
This work is designed to highlight the technical data regarding reliability and maintainability of a modern-day Wind Turbine. With the ever-increasing demand for cleaner energy and reduction of greenhouse gases, Wind Turbines offer a feasible solution in contributing towards a greener future as a whole. In spite of this, they must provide both a reliable form of energy production and an economic benefit to corporations investing in this technology, as an individual wind turbine can be considered a large financial investment, both to set-up and to maintain.
Analysis of the causes of failures of pyrolysis units
Authors: Kolenchukov O A , Petrovsky E A 
Published: December 2019

Abstract
This paper presents the classification of pyrolysis units for the disposal of oil waste (oil sludge). Using statistical methods of quality control (Ishikawa diagrams and Pareto diagrams), the main factors affecting the process of oil sludge pyrolysis were identified, as well as the causes of defects that are of paramount importance in eliminating them.
Alternative method for evaluation of vehicle static transverse stability
Authors: Blyankinshtein I M , Fedotov I A , Khudyakov D A , Smolenkov F Y , Makhova E G , Kovalev A G , Kolesnikov I M 
Published: December 2019

Abstract
Methods of testing vehicles for static lateral stability are considered. The object of the study is service of vehicles (trucks and specialized equipment) which have undergone the conversion. Subject of research is the procedure for testing vehicles for static lateral stability and the resulting errors. This article discusses the original method of testing vehicles for static lateral stability, eliminating the need for a stand with a tilt table and ensuring the equivalence of measurement to the method regulated by GOST 31507-2012. The authors proposed a method for testing a vehicle (RF Patent No. 2693140, published on July 1, 2019), which provides its placing on a horizontal supporting surface, creating a tipping moment relative to the longitudinal axis of the vehicle and brining the vehicle to an unstable position by means of a lifting device with a cargo system slings and safety ropes. In this position, the roll angle φ of the sprung masses is measured, the height of the center of mass h is determined; the angle α
су of the static lateral rollover stability of the vehicle is calculated. It is shown that the developed test method will be equivalent to the method regulated by GOST 31507-2012.
Effect study of Mao-coatings heat treatment on their structure, phase composition, physical and mechanical properties
Authors: Tchufistov O E , Tchufistov E A 
Published: December 2019

Abstract
The structure, phase composition and physical and mechanical properties of MAO-coatings on deformable aluminum alloys after heating with subsequent holding were studied. It is revealed that in the temperature range from 50 to 600 °C in MAO-coatings there are changes of three types, manifested in increasing the porosity of MAO-coatings and increasing the content of substances with higher physical and mechanical properties. It is shown that the surface hardness, wear resistance and electrical resistance of MAO-coatings increase, but the breakdown voltage decreases. It is established that the simultaneous happens of changes of different types leads to an increase in number of cracks and ruptures in the structure of MAO-coatings and a decrease in their physical and mechanical properties. To maximize the surface hardness, wear resistance and electrical resistance of MAO-coatings, it is proposed to conduct their heating with sequential stepped holding, ensuring a consistent implementation of changes of all three types.