bluuebunny/crossref_metadata_2025_split huggingface dataset:
The research of thermoelastic deformation models with thin elliptic boundary contours plates and accounting uncertainty factors
Authors: Bolnokin V E , Storozhev V I , Hai Duong Minh , Mutin D I 
Published: November 2020

Abstract
Consider thin plates with external or internal boundary elliptical contours. It is necessary to take into account the scattering errors of the values of the initial physical, mechanical and geometric parameters based on the use of the heuristic principle of generalization. Known research methods for such systems based on the methodology of accounting for plate deformation under the influence of thermometric factors. Of particular interest is the assessment of the endogenous characteristics of the process using a hybrid technology for accounting for displaying the variability of inputs to these characteristics. Significant relationships of low-variant versions of the model are created for the base component, which is a homogeneous orthorhombic area of nonzero thickness and nonzero area in given coordinates. Axes passing through the middle of the element are defined. Half shafts define an elliptical contour. Stresses in the element are generated by the heat flux, which is symmetric and axial with respect to the coordinate system in the heat flux part.
Environmental problems of gasoline and diesel fuel use in Russia
Authors: Kovaleva M A , Ganzha V A , Tsygankova E V , Slashchinin D G , Matkerimov T I 
Published: November 2020

Abstract
The present study considers an environmental analysis of gasoline and diesel fuel use in Russia. Volume dynamics of atmospheric pollutant emission from stationary and mobile sources is presented. Chemical composition of vehicle exhaust gases is examined and toxicity of components is estimated as well as their adverse health effects in exposed people. The changes in the concentrations of detected substances in recent years are analyzed. Prospects for the use of NGV (natural gas vehicle) fuels are defined. Comparative characterization of toxic substances emissions into the environment when using natural gas instead of petroleum fuel is provided.
An embodiment of a compact circular directional coupler for maritime communications equipment
Authors: Hung L Q 
Published: November 2020

Abstract
The article is devoted to the design and configuration of a circular directional coupler with a small size for maritime communications equipment. In the course of the work, the model of the device and its characteristics were analyzed. It has been determined that a compact device has a significantly smaller area while having comparable characteristics. The process of miniaturization itself consisted in replacing traditional quarter-wave segments with their analogies implemented on a printed circuit board in the form of inductive and capacitive elements.
Control of a non-stationary dynamic system with estimating a strategy of human resources management by the integral indicators method
Authors: Masaev S N , Vingert V V , Musiyachenko E V , Salal Y K 
Published: November 2020

Abstract
A general idea research is a lack of articles to estimate system indicator of the effectiveness of the strategy of human resources management (HR) at an economic object (enterprise). We are use the method of integral indicators for a comprehensive assessment of the activities of an economic object (enterprise). The economic object is formalized as a non-stationary dynamic system. The system has a dimension of 1.2 million parameters. The parameters of the object under research (business processes) are compared with staff responsibilities. The sanctions mode is set by blocking staff responsibilities in the interval in each time period t. The integral indicator is calculated according to the standard mode (Strategy 1) of the economic object (enterprise) and without blocking the staff responsibilities. Also, the integral indicator is calculated according to the non-standard operating mode of the enterprise (Strategy 2) with the blocking of staff responsibilities. The difference between the integral indicator of Strategy 2 and Strategy 1 is an estimation of the impact of the imposed sanctions. The resource consumption for the restoration of the normal operation of an economic object after the imposed sanctions is give (61.63 million rubles). Example 2 introduces equipment sanctions from America for a new project. An analysis of the indicators of a new project is carried out with the search and use of analog equipment
Comparative capability analysis of laser multispectral methods for measuring oil slick thickness
Authors: Belov M L , Kopysova T I , Gorodnichev V A 
Published: November 2020

Abstract
The remote laser multispectral method capabilities to measure the thickness of the oil slicks on the sea surface in various spectral bands have been analysed. The best option (in terms of the band and the recovery accuracy of the oil film thickness on the water surface) is to use the eye-safe spectral band of about 2.1 μm. It is shown that a use of the discretely wavelength-tuneable laser for 5 wavelengths in spectral interval about 2.1 μm and the quasi-solution search method for mesurement data processing, enables us, with the mean square value of measurement noise 2 %, to recover the thickness of the oil slicks on the sea surface from ∼ units μm to ∼ 200 μm with an error of no more than 30%.
Grain crop defect fixing method based on digital image statistical parameterization
Authors: Kovalev Andrey , Pribylsky Alexey 
Published: November 2020

Abstract
The article examines the main stages in the development of a statistical method for localizing and classifying grain crop defects in conditions of low resource consumption of hardware and software of modern agricultural sorting systems. The developed methodology allows: to form a set of coefficients that make it possible to quantify the area under study; the use of the variation coefficient enables to unambiguously assess the homogeneity of the contents of the investigated area; the analysis of the obtained groups of variation coefficients provides for localization of the alleged defect against the general background of the contour, with its contents heterogeneity.
Decrease in average traffic speed and increase in harmful emissions of vehicles at unregulated pedestrian crossings in cities
Authors: Atabekov K K , Sarymsakov B A , Maksimovich K Yu , Voinash S A , Kamenchukov A V , Gamilia O N , Sokolova V A 
Published: November 2020

Abstract
The problem of environmental pollution is one of urgent problems of mankind. This problem especially applies to large cities of any state. Atmospheric air, which performs life-supporting, protective and other functions, is subject to the greatest change. Increased air pollution leads to a negative impact on public health. So, every year number of social movements and various events is growing, expressing great concern about the state of air in the city of Bishkek. Basically, organizational and technical measures are aimed at improving road safety by reducing speed. But along with a decrease in traffic speed, fuel consumption increases, which in turn leads to a proportional increase in exhaust gas emissions. Especially in places where artificial irregularities are established, intensive braking occurs, followed by acceleration of the vehicle. This article is devoted to assessing the impact of unregulated pedestrian crossings on average speed of traffic and emission of harmful substances by vehicles. Relationship between the average traffic speedat unregulated pedestrian crossings and the total delay of vehicles has been established. An increase in emissions from vehicles at unregulated pedestrian crossings is substantiated, which makes it possible to calculate the cumulative emissions from vehicles on the sections of the city’s road network more accurately. This article presents the results of experimental studies of the influence of artificial irregularities, stopping points and parking places on the traffic speed and emissions of exhaust gases into the atmosphere.
Risk assessment in the activities of testing laboratories of mechanical engineering products
Authors: Blyankinshtein I M , Makhova E G 
Published: November 2020

Abstract
A methodological approach to risk assessment in the testing laboratory of mechanical engineering products has been developed, based on the provisions of GOST R 58771-2019 “Risk management. Risk Assessment Technologies”. To identify risks, a list of hazards was created and structured using the Ishikawa method. For the analysis and comparative assessment of risks a “consequences / likelihood” matrix was created taking into account the social, legal, financial, reputational and professional consequences of risks.
Eco-friendly equipment of the Vyatka state agricultural academy
Authors: Simbirskikh E S 
Published: November 2020

AbstractThe inevitable tightening of requirements for preserving the planet’s climate and reducing the negative impact of energy technology emissions into the environment is already beginning to influence the choice of technologies in all areas of industrial and social activities. In this regard, there is an urgent need to find more reliable and cheaper technologies that can replace traditional technologies. The paper presents mock-up models of eco-friendly equipment for transport, national economy and agro-industrial complex developed at the Department of heat engines, cars and tractors of the Vyatka state agricultural academy.
Analysis of effect of carbon black on plugging mixtures
Authors: Nikolayev N I , Kovalchuk V S 
Published: November 2020

Abstract
This study is devoted to the study of grouting mixtures for cementing oil and gas, hydrogeological and exploration wells. In order to improve technical and operational parameters, a number of highly effective modifiers are used, including nanocarbon materials. The article provides the properties of carbon black obtained by processing tires, and also shows an analysis of its effect on the physical and mechanical properties of grouting mixtures made from ordinary Portland cement CEM-I. The research on receiving a high-strength grouting composition for well cementing is presented. The optimal content of carbon black and plasticizers in the binder has been estimated, which makes it possible to access the required technological properties of cement stone in comparison with a solution without additives. It has been determined that small doses of nanocarbon modifiers are needed to effectively affect the properties of the cement stone. The physical, mechanical and operational properties of the modified grouting mixture are considered.
Cluster analysis for modeling the cost of industrial land objects in Krasnoyarsk region
Authors: Panfilov I A , Alekseeva Y A , Shiryaeva A A , Karelin O I , Kustov D V 
Published: November 2020

Abstract
An assessment activity must have a legal justification. The regulatory documents are results of a land plot state assessment carried out in the Russia regions on a regular basis. In this research mathematical models for evaluating land plots in Krasnoyarsk region based on data from the state assessment of 2012 and 2017 were built. The models were supposed to formalize the mechanism for evaluating the state contractor when evaluating industrial land. Factor and cluster analysis methods were used. The factors were determined to a greater extent determining the change in the value of the objects of assessment. The data for the analysis was taken from open official sources. The simulation results showed unstable dependencies in the official results of the state contractor evaluation. Further analysis revealed errors in the official report.
Research of the impact of ultrasonic and thermal effects on oil to reduce its viscosity
Authors: Palaev A G , Shammazov I A , Dzhemilev E R 
Published: November 2020

Abstract
At the moment, reserves of low-viscosity oil fields are beginning to deplete, and therefore the need for the production of high-viscosity, heavy and bituminous oils is increasing. The difficulty lies in the fact that their transportation from production sites to consumption sites is difficult due to the high viscosity of oil. Currently, the thermal method is widely used to reduce the viscosity of high-viscosity oils. One of the promising and environmentally friendly methods of reducing oil viscosity is the method of using ultrasonic treatment. This paper will investigate the effectiveness of ultrasonic exposure versus thermal exposure to reduce oil viscosity.
Theoretical basis of selection of measurement measures in control of linear sizes
Authors: Leonov O A , Shkaruba N Zh 
Published: November 2020

Abstract
The important role of metrological support in machine-building production has been shown. It has been established that in connection with the introduction of quality systems and management systems for metrological support of measurements at machine-building enterprises and the need to assess the quality of measuring processes, it is necessary to develop methods for analyzing the effectiveness of the results of using one or another measuring instrument. The analysis of the existing methods of selection of measuring instruments for linear dimensions in the tolerance control of mechanical engineering products is carried out. It is proposed to solve the problem of economic optimization of measurement accuracy by taking into account both measurement costs and losses from measurement errors. An expression is obtained for calculating the theoretically optimal measurement error, which corresponds to the criterion of minimizing the amount of losses from the measurement error and the costs of the measuring process when organizing the control of a specific parameter by universal measuring instruments of linear dimensions.
Optimization of starch sulfation process with a deep eutectic solvent-mixture of sulfamic acid:urea
Authors: Kazachenko A S , Vasilyeva N Yu , Malyar Yu N , Kazachenko A S 
Published: November 2020

Abstract
The process of sulphation of potato starch with a deep eutectic solvent, a mixture of sulfamic acid: urea, was optimized. The influence of varying factors was established - the ratio of sulfamic acid: urea (SAA: U), the ratio of starch: sulfating complex (St: SC) and the duration of the process on the sulfur content (wt.%) in the obtained starch sulfate. The data of analysis of variance for the obtained mathematical models indicate good prognostic properties. The optimal conditions for starch sulfation, which provide water-soluble sulfated starch with a high (up to 11.2% wt.) sulfur content, have been established. The optimal conditions for the process of sulfation of potato starch are the ratio SAA: U 1: 2.0-1: 2.2, the ratio St: SC 1: 3.5-1: 4.0 and the duration of the process is 118-120 minutes.
Analysis of the time-frequency characteristics of seismic and electric fields over the Novomikhaylovskoye gas condensate field
Authors: Potylitsyn V S , Kudinov D S , Maykov O A 
Published: November 2020

Abstract
The article analyses the characteristics of seismic and electric fields over a gas condensate field. The horizontal electric component of the Earth’s electromagnetic field in the centre of the field has a pronounced frequency dependence and is localized in the frequency range up to 100 Hz. In the centre of the field, there is a fairly even electric component of the Earth’s electromagnetic field without sharp bursts and impulse noise, while from the edge of the field impulse dips of up to several seconds are observed. The high values of the seismic-electric coefficient at the Novomikhaylovskoye gas condensate field when it is calculated as the maximum of the cross-correlation function are due to the fact that the power of the recorded seismic field is more localized in the frequency spectrum up to 30 Hz and, as a consequence, when calculating the cross-correlation function, this makes the greatest contribution to its amplitude value.
On the possibility of predicting rock burst in mines by the seismic-electric method
Authors: Kudinov D S , Shaydurov G Y , Neverov A S , Agrovichenko D V 
Published: November 2020

Abstract
The article discusses a method for predicting a methane explosion in underground workings by observing simultaneously electrical and acoustic noises of the Earth on the surface of a mine field, highlighting their mutual correlation function. When used in the observation of acoustic noises by three-coordinate seismic receivers in two spaced along the Earth’s surface, an algorithm for determining the coordinates of the expected explosion site is described. The results of field tests of the method at the Minusinsk gas condensate field are presented.
Analysis of seismoelectric effects via tank experimental observations
Authors: Potylitsyn V S , Kudinov D S , Kokhankova E A , Shaydurov G Y 
Published: November 2020

Abstract
The purpose of the present research is to experimentally confirm the seismoelectric effects of the second type on the physical model, which is represented by a tank filled with sand (2.1 x 1.32 x 3.2 m). Analysis of the current state in the field of hydrocarbon search using seismoelectric effects was carried out. Physical modeling of microseismic and natural electromagnetic field was performed applying acoustic emitter and grounded electrodes at the tank edges; registration was carried out with the help of three axial seismic receivers manufactured by GS and grounded dipole using non-polarizing electrodes of VIRG design. The results show that the maximum of the cross-correlation function is highly noisy, and recording seismoelectric effects on physical models of such sizes using the existing element base is not possible, thus, it is necessary to either increase the sensitivity of the receiving equipment along with an increase in the size of physical models or increase the signal accumulation time from 20 minutes or more.
Nitrogen oxide formation with nonuniform fuel distribution in diesel engine
Authors: Chumakov V L , Devyanin S N , Bijaev A V 
Published: November 2020

Abstract
The high requirements for limiting the toxic components of exhaust gases of modern internal combustion engines require significant expenditures both for the improvement of existing engines and for the development and implementation of new types of engines. Some European organizations are raising the issue of limiting the use of diesel engines and even a possible cessation of their production in the next 5-10 years. This article reflects the results of studies on the formation of one of the most toxic components of exhaust gases - nitrogen oxides. The calculations were carried out according to the thermodynamic cycle model, which makes it possible to estimate the main characteristics of the operating cycle as the fuel-air charge burns out. Calculations are carried out with regards to a gas-diesel modification of an air-cooled engine with a dimension of 120 x 120 mm, which assumes the supply of the main gas-air charge through the inlet pipeline and a limited dose of diesel fuel injected into the cylinder to ignite the charge. The model shows the conditions for the burnout of the charge and the formation of nitrogen oxides in 10 equal in mass and successively burnout zones of the charge in the diesel cylinder. Calculations show that the formation of nitrogen oxides can be significantly reduced by 50 … 80% by adjusting the charge stratification scheme, that is, by changing the fuel concentration in the burnt-out portions, due to the mutual regulation of diesel and gas fuel supplies. The results of experimental verification of the calculations are presented below, which confirms the adequacy of the model. The effect in the total reduction of NOx emissions can be significantly improved by using partial charge throttling and using exhaust gas recirculation. The data obtained confirm the feasibility of further fine-tuning the working process of gas-diesel engine modifications and meeting the requirements of toxicity standards.
Analytical estimation of solution parameters for elliptic equations with variable coefficients in fluid dynamics
Authors: Lelekov T I , Lelekov E T 
Published: November 2020

Abstract
In this paper we consider multidimensional and two-dimensional elliptic partial differential equations of the second order with variable coefficients. They are often used in the oil and gas industry to calculate the inflow volume of liquids and gases from natural reservoirs to exciting structures. The analytical solution of that equations with variable values of the permeability coefficient is possible in rare cases, when the change in the formation permeability is expressed in the form of simple analytical dependencies over the area of fluid filtration. In this paper, we give estimated formulas for fluid inflow to structures under conditions of reservoir heterogeneity, which retain an analytical relationship with the permeability coefficient. The value of the proposed method lies in the ability to establish important qualitative regularities of an underground flow formation, based on simple formulas. The obtained expressions of the above theorems are consistent with the calculation formulas of underground fluid dynamics, and allows one to perform calculations of oil production in heterogeneous formations.
Influence of mass flow transfer on velocity profile formation
Authors: Ponikarov A 
Published: November 2020

Abstract
Heat and mass transfer processes underlie almost all processes in the chemical and petrochemical industry (rectification, absorption, drying, evaporation, etc.), and, as a rule, such processes take place in multicomponent systems. It should be noted that the accuracy of existing methods for calculating mass transfer processes does not exceed 85% (although it can reach 95-97% for well-studied problems). In general, separation processes are very energy-intensive, moreover, they often have a negative impact on the environment. In view of the above, it is advisable to in-depth study of the phenomena and processes occurring in the mass transfer equipment. One of the methods is numerical simulation in the ANSYS Fluent software package, which has proven to be a reliable tool for modeling mass transfer processes.
Ecodesign management modelling for petrochemicals manufacturing
Authors: Dyrdonova A N , Zinurova R I , Girfanova E Y , Andreeva E S 
Published: November 2020

Abstract
Creation of the necessary conditions for the sustainable development, design and manufacturing of competitive products, improvement of the environmental and industrial safety are the major tasks for the petrochemical manufacturers. Handling these tasks is impossible without applying the modern management systems that allow for establishment and implementation of the enterprise’s performance self-assessment approach in terms of quality assurance and control, compliance with the environmental legislation, and international standards of social responsibility and manufacturing greening. For making optimal decisions at the management level in regard to the petrochemical manufacturing greening, it is essential that a relevant efficiency parameters monitoring system is applied. In this context, the authors offer a mathematical model that demonstrates a method of improvement of the petrochemical manufacturers’ earning power through mastering the green technologies. The mathematical model parameters include the profit, resource productivity of produced petrochemicals, environmental R&D costs, as well as specific quantities of atmospheric emissions. The model proposed by the authors can be used to analyze and predict effectiveness of the petrochemical manufacturing greening.