bluuebunny/crossref_metadata_2025 huggingface dataset:
New methods of processing of Cuban nickel ores and technogenic slimes
Authors: Bazhin V Yu , Nikolaev A N , Turro A B
Published: May 2020

In this paper the problems of beneficiation of lateritic nickel ores of the Cuba Republic and passing extraction from them and slurry waste of elements of platinum group is discussed. For carrying out research 100 kg of ore and 130 kg of tails of beneficiation were selected. It is established that in the course of receiving nickel-cobalt go of a sinter in slimes concentrates rhodium (0,074 %) and platinum (0,018 %). The chemical composition of the ore is now determined at the specialized pilot processing research center in Cuba on eight elements only (Ni, Co, Si, Fe, Mg, Al, Cr), but rare and PGM metals content is not included in the assessment scope. Within the scope of science and engineering cooperation between the Mining University (St. Petersburg) and the Higher Institute of Mining and Metallurgy, Moa a dressability assessment of laterite ores involving recovery of other rare earth metals (REM) has been performed. The investigation of the performance data available allowed to arrive at a conclusion that the most expedient means of production cost reduction to make it competitive with no capital reconstruction of metallurgical shops will be a pre-concentration process.
The influence of manufacturing errors of cases on their assembly
Authors: Yamnikov A S , Rodionova E N , Matveev I A
Published: May 2020

The authors of the article propose a way to increase the accuracy of processing pipe casings included in special products. Currently, in the current production of these products, there is a need to increase the accuracy of manufacturing cases, so it was decided to conduct research work. The article discusses the process of processing long bodies from thick-walled workpieces using hoods, which ensures high precision workpieces and minimal impact on the properties of the initial type of workpiece. As a result of the research, the significance of the geometric errors of the component pipes of the product on its functionality is analyzed. The achieved accuracy of the manufacture of base surfaces and the parameters of their possible distribution are shown. The similarity of the parameters of the initial part and further assembly is determined, it is also shown that the runout of the end surfaces of the part has a significant effect. The optimal basing scheme for finishing the end surfaces of long bodies is shown.
Regulatory systems aimed at providing safety on railway transport
Authors: Khakimzyanov Rustam R , Mashtakov Alexander P , Nesterov Sergey V
Published: May 2020

The article presents the analysis of the existing regulatory and legal framework for the railway transport. The article includes the problems that appear in the process of certification, that is the contradictions in the regulatory system. It is proposed to improve the regulatory system and to develop a new procedural framework for the railway production connecting with the demands on the terms of the life cycle.
Selection of the optimal configuration of a signal transmission system through a rock depending on the mine geological structure
Authors: Kokhon’kova E A , Kudinov D S , Neverov A S , Romanov V V
Published: May 2020

The article gives numerical estimates of a wireless warning system model and individual call of personnel in mines using a low-frequency electromagnetic field (ULR-range) with account for low-resistivity ore reserves. The presence of such deposits is represented by the main problem of the implementation of TTE (Through-the-Earth) communication due to the large size and strong shielding properties, which are also evaluated. The article shows numerical estimates for two long dipole antenna configuration models (symmetric and asymmetric). The comparison provides an assessment of the benefits of different antenna installation options to neutralize the shielding properties of the deposits.
Theoretical grounds for the propagation of electromagnetic waves of low-frequency (URL) in low-resistivity rocks
Authors: Kudinov D S , Maykov O A , Kokhonkova E A , Romanov V V
Published: May 2020

The article describes and estimates the method of wireless data transmission through rocks using a long dipole antenna, and also describes the effect on the propagation of low-frequency electromagnetic low-resistivity inclusions in the form of non-ferrous metal deposits. Estimates of the methods from other articles and their assessment in the presence of such bodies are given. A numerical analysis of the proposed system was also made for given parameters of the field source and rocks with a special configuration of antennas.
Algorithms for replacing tools on multifunctional metal-cutting equipment
Authors: Shadsky GV , Isakov IN
Published: May 2020

The results of the work aimed at reducing organizational downtime of equipment associated with the readjustment of machines during the transition to the manufacture of another type of product are presented. A set of measures is proposed, which includes the formalization of the technological process in a matrix way, which allows describing the processing from the point of view of the cutting tool and machine tools used. After formalization, various methods of cluster analysis were applied to determine the sequence of starting parts into processing, at which the equipment readjustment time would be minimal. For the study, equipment having a block layout was selected. A key place in the article is given to the problem of determining the procedure for replacing equipment in machine blocks with a built-up sequence of starting parts for processing. Several algorithms are proposed, among which the best one in terms of the number of necessary replacements in the equipment blocks has been selected.
Change of magnetic properties of metal in the zone of stress concentrator
Authors: Khajbullina L V
Published: May 2020

Studies show that there are certain problems in assessing the stress-strain state of structures by magnetic control methods, so it is necessary to carry out additional theoretical and experimental studies of magnetic parameters on standard samples from structural steels, which will help to reduce uncertainty of magnetic control results. In operation, dependence of intensity of own magnetic field of scattering in eight directions is established from concentrator of stresses at tension of cylindrical sample with artificially created concentrators of stresses in the form of overcooler with diameter of 2 mm from steel C 20 in elastic area. The analysis of the obtained dependencies revealed a change in the intensity distribution of the own magnetic field of metal scattering in the vicinity of the stress concentrator. In general, the distribution of the strength of the intrinsic magnetic field of the metal scattering in the zone of the stress concentrator tends to increase when the stresses are removed from the concentrator, but there are areas where the strength of the intrinsic magnetic field of the metal scattering is reduced when the stress is removed from the concentrator, which may indicate an intended fracture zone. There are no sharp changes in the intensity values of the own magnetic field of metal scattering at increase of tension load in the elastic region.
Application of artificial neural networks to fault diagnostics of rotor-bearing systems
Authors: Kornaev N , Kornaeva E , Savin L
Published: May 2020

The article is dedicated to the pattern recognition of unbalanced rotor vibration trajectories. The diagnostics of rotary machines with fluid-film bearings is studied. The feed forward neural networks were used to analyze the measurement data of rotor vibrations and other parameters of the rotor-bearing system. The states of the system were studied at various values of the rotor unbalance. It was shown that the number of training samples and the number of neurons in the input layer have the greatest impact on recognition accuracy. As a result of training the neural network to recognize 3 classes of defects, an accuracy of more than 97% was achieved.
The e-objects family in simulation of mechatronic facilities
Authors: Zakoldaev D A , Shukalov A V , Zharinov I O , Zharinov O O
Published: May 2020

The very impotent modern industrial problem is to design a family of the mechatronic facilities electronic objects (e-objects). E-objects are an software of description of real mechatronic robotic objects being used in the engineering and production of future facilities. E-objects are placed in the cloud and let real mechatronic robotic objects to be described adequately and the properties of intelligent robotic systems (IRS), the properties of the device being manufactured, the properties of engineering and production processes, etc. To project e-objects is a component of the synthesis project problem of the future mechatronic robotic facilities. A family of e-objects, which are adequate for the product life-cycle is shown. The product lifecycle is shown. The place of each e-objects family are defined to realize product life-cycle.
Semantic analysis implementation in engineering enterprise content management systems
Authors: Ivaschenko A V , Stolbova A A , Krupin D N , Krivosheev A V , Sitnikov P V , Kravets O Ja
Published: May 2020

The paper introduces a new solution for semantic analysis implementation in modern enterprise content management (ECM) systems. The system of semantic analysis is intended for the intellectual analysis of enterprise official and technical documents based on machine learning, namely the extraction of the specified attributes from them for further use. In this paper it is proposed to implement semantic search using the extracted data configurator, which is responsible for creating and managing ontologies. From the configurator of the extracted data by the name of the document type, a graph is generated containing attributes to be extracted (official terms and sections, dates, etc.), regular expressions to search for sentences that probably contain the desired attribute, Yargy and regular rules for extracting attributes from the arrays of sentences. The proposed solution was successfully probated and tested on a dataset containing engineering enterprise contract agreements and protocols.
System analysis of the cognitive radio system operation algorithm efficiency
Authors: Blagodatsky Gregory A , Kopysov Andrej N , Khvorenkov Vladimir V , Baturin Ivan S
Published: May 2020

The report presents an algorithm for optimal control of a cognitive radio communication system. The algorithm is based on the application of decision-making criteria in a dynamic environment. The basis of the algorithm is to solve the problem of maximizing the system efficiency coefficient in a given mode. Thus, the cognitive radio communication system can choose the most optimal mode of operation, both in a specific situation, and choose the general preferred mode of operation for a comprehensive assessment of the external situation. From the effectiveness of the radio system in analog and digital modes, we can conclude that in the event of time limitations it is more useful to control the transmitter power (increase the energy of the radio line). However, when working in digital modes, the decrease in efficiency is much slower than when using analog modes. An analysis of the operation under conditions of restrictions on the transmission power also shows a slower decrease in efficiency in digital modes with slow consumption of resources, while consumption increases sharply in analog mode.
Assessment of planning methods at job-order manufacturing facilities
Authors: Kuznetsov A S , Noskova E E
Published: May 2020

An approach to assess the efficiency of solving the problem of production planning at job-order small-scale manufacturing is presented. In consideration of their dimensionality, initial data are analyzed to build an optimal plan based on known scheduling methods for the production of different types. Reducing performance time of production plans by 10 % at the increase in the size of the order with technological operations for processes of different types at the use of directed exhaustive methods is shown.
Digital algorithms for supply chain automation of mechanical engineering production
Authors: Borisoglebskaya L N , Sergeev S M , Provotorova E N , Zaslavskiy A A
Published: May 2020

The modern concept of the developing engineering production is based on a digital interaction. At the same time, management of all related processes is possible due to a digital shadow at each stage of work. This primarily related to supply, marketing and interoperational units within the enterprise. The solution of the automation problems of the industrial production, matching to the priorities of the Industry 4.0 program is ought to begin with the organization of the inter-machine interaction M2M. This article presents the results of a study devoted to a search for optimal algorithms for managing the flow of goods and cargoes of the engineering production in modern supply chain management concepts such as 3PL logistics, pick-by-line, cross-docking, as well as ensuring the implementation of managerial decision-making systems based on outrunning economic indicators.
Method of forming of the program of issue of competitive products of machine-building industry
Authors: Antamoshkina O I , Zinina O V , Stupin A O
Published: May 2020

Scientific and technical developments of the engineering industry are currently underutilized for the innovative development of the economy enterprises. The capabilities of the available technological base and personnel potential allow to significantly increase the profitability of financial and economic activity to the introduction of a new product into the market. At the same time, it is necessary to rely on models, which establish dynamic connection of parameters of state of production and operation spheres with characteristics of consumer cost of products and allow to create on their basis complex procedures of forecasting and optimal planning by selection of best options from among alternatives.
Intelligent quality management tools for digital production and knowledge management system for their application
Authors: Chesalin A N , Grodzenskiy S Ya , Nilov M Yu , Pham Van Tu
Published: May 2020

Due to the evolution of the digital production technologies and the transition to the cyber-physical systems, new methods of controlling technological processes and managing business processes of modern enterprises are needed. In the article we investigate the problem of improving quality management methods for the organization and management of modern digital production. Various methods of quality management, both traditional and modern, are considered. The concept of digital production quality management based on artificial intelligence and information technologies is proposed. As a basis for the implementation of the intelligent quality management methods in the management of digital production we consider the development of a knowledge management system for their effective application.
Ergonomics of the workplace in the lean production system
Authors: Vadulina N V , Abdrahmanov N Kh , Fedosov A V , Savicheva Yu N , Khlopina I D
Published: May 2020

The article considers the possibility of introducing ergonomic indicators of the workplace into the system of lean production of the machine-building enterprise. The feasibility of taking into account ergonomic indicators is proved by the main tool of lean production - mapping of the flow of creation of production of the “shaft” part. Studies have shown that the accounting of ergonomic indicators allows to identify losses related to psychophysical factors affecting the employee, environmental factors of the employee (including production equipment) and eliminate them by planning and developing appropriate measures.
Automation of Russian industry as an indispensable condition for sustainable economic development in the digital environment
Authors: Avdeeva E A , Averina T A , Davydova T E , Zhutaeva E N
Published: May 2020

Today, robots are actively being introduced in all sectors of the economy from the production of industrial goods to the service sector. The leader in this area is China, it is ahead of the United States and Europe. Russian industrialists are quite conservative in technological updates. It was emphasized that robotics and automation, combined with the cybernation, mark a radical turning point in society. The importance of industrial automation in solving technical, technological, socio-economic and environmental problems is shown. Models of economic growth in industry, in particular P. Romer, confirm that the rate of economic growth is directly dependent on the amount of technological innovations. The negative aspects of automation, which consist in a sharp reduction in employment, are also emphasized, but long-term forecasts, on the contrary, indicate its increase, but a change in the structure of professions.
Fundamentals of the economic growth of engineering enterprises in the face of challenges of the XXI century
Authors: Chursin A A , Grosheva P Yu , Yudin A V
Published: May 2020

The world economy is currently undergoing an irreversible transformation caused by the fourth industrial revolution, characterized by the merging of technologies and the blurring of borders between the digital, industrial and biological spheres. The main factor in creating a unique product in the face of the challenges of the 21st century, aimed at meeting future needs is the continuous growth of innovative potential associated with the development and implementation of new technologies and equipment, improving management methods. At the same time, companies need to constantly monitor the technological development of all market players and industries in order to maintain the competitiveness of existing and create new unique products that can lead a company to long-term competitive leadership.
Lean manufacturing - a method of managing a manufacturing enterprise
Authors: Moskvicheva E L , Mukhametshina A M , Erofeyev A N , Savelyev K V
Published: May 2020

The article describes the relevance of the concept of “lean production” based on the analysis of manufacturing enterprises. The main methods of lean production are highlighted. The features of the method implementation are formulated. To ensure the reliability of the conclusions, we used materials from scientific conferences, publications of domestic and foreign experts on the problems of lean production, and actual data of industrial enterprises. The methods of classification, comparison, system analysis, and generalization were used. The research results will allow industrial enterprises to correctly use such lean production tools as 5S, Kaizen, Kanban, Poka-Yoke, etc., and build a management model focused on continuous improvement. Both the positive aspects of the “lean production” concept and a number of specific difficulties and features that the company has to overcome to create an effective lean production system are shown.
Poly-model description of Industry 4.0 cyber-physical systems
Authors: Zakoldaev D A , Gurjanov A V , Shukalov A V , Zharinov I O
Published: May 2020

An actual task is to project a cyber and physical system (CPS) of industrial purpose based on a set of graphs and analytical models which describe the CPS behavior in the physical device level and in the virtual level. There is a scheme and description of CPS functionality principle as an automatic control digital system. The advantages of subtractive equations to describe a CPS are described and also the restrictions to use automatic models to synthesize the systems of higher order (digital production). There is a scheme and CPS functionality principle as a company cloud environment element is described (digital twin) which is based on a uml-diagram. There are advantages and disadvantages to describe a CPS with a uml-diagram given when they model CPS behavior as a part of digital production. There is a scheme given and CPS functionality principle is described using a Petri net model. It is clear that all three types of CPS description must be viewed together as a poly-model division which helps the CPS designers to create and research the project solutions of the Industry 4.0 digital production components synthesis.
Conceptual model of the empirical data multidimensional presentation on the state of forming critical information infrastructure
Authors: Kalach A V , Burkova K O , Kulikova T N , Buharov E O , Scherbin A N
Published: May 2020

Conceptual model presented in the work is based on the synthesis of generalized representations comprising of the separate processes and phenomena which describe behavior of the investigated system (object) in the critical informational infrastructure. Conceptual model of providing cyber-resilience for the objects of critical informational infrastructure within the departmental information network integrated by informational-telecommunication public network into cyber-space and representing stochastic dynamics of the destructive informational impacts on the objects is given in the form of a common framework and processes (functioning, impacts and providing of cyber-resilience) which gives their most significant links.
Analysis of routing processes in telecommunication networks with unsteady flows using Markov processes
Authors: Kravets O Ja , Shaytura S V , Minitaeva A M , Atlasov I V
Published: May 2020

This article is devoted to the problems of investigation of routing processes in the large distribution systems. The numerical decision systems of the nonlinear equations for a preset network, traffic and conditions of functioning allows to implement determination of a probability-time characteristics of a network, carry out a rating of used algorithms of routing, methods of streams control. The identification of parameters of model of the routing process close to best values is possible during a repetitive process of search of the solution of a system of nonlinear equations. The designed analytic model of processes of multiparameter routing in networks based the theory of finite Markov chains, queuing theory etc., allows to define probability-time characteristics of a networks. Structure and the methods of model construction provide its practical applicability for auto configuration of routing algorithms and traffic control for specific topological structures, channels characteristics and traffic between routers of a network.
Data processing of robotic parameters in intelligent robotic systems
Authors: Shukalov A V , Zakoldaev D A , Zharinov I O , Zharinov O O
Published: May 2020

The scientific problem of developing the processing of technological data generated by the intelligent robotic systems (IRS) in the mechatronic robotic process is considered. It is shown that mechatronic robotic data is generated simultaneously in the real IRS and in the cloud-based IRS. In the real IRS, data is captured by a system of sensors built into the IRS process chamber. In the cloud-based IRS, mechatronic robotic data is generated by simulating production processes in a modelling tools (in the cloud) using the IRS digital twins. It is shown that the quality of mathematical data processing acceptable for implementation in mechatronic robotic industry is achieved using mathematical methods of regression analysis. Regression analysis allows you to detect the disorder of difficult to control production processes, accompanied by the formation of time series of mechatronic robotic data having a stochastic nature. Structural schemes of the mathematical processing of mechatronic robotic data in industrial IRS is described.
Automation of information entropy assessment process for large production systems and their components
Authors: Polishchuk Y V , Chumakov R V
Published: May 2020

In the framework of this work, an assessment method is considered and an application is proposed that implements the ability to calculate information entropy for large production systems. The importance of informational entropy for large production systems and their components allows a group of decision-makers to assess the prospect of generating managerial decisions from the perspective of completeness of knowledge about the state of the system based on available factual data.
Convolutional neural network for detecting anomalies in the control system of a machine-building enterprise
Authors: Kusakina N M , Orlov S P , Kravets O Ja
Published: May 2020

The article is devoted to the study of the possibility of using machine learning methods and the apparatus of neural networks to ensure a given performance and security of the enterprise infrastructure. Continuous monitoring of computer networks and enterprise resource planning systems determines the stability of the enterprise. The infrastructure of any enterprise is gradually expanding and increasing, not only due to the growth of the geography of networks, but also due to the use of equipment from various manufacturers. Therefore, it is important to create intrusion detection and prevention systems with automated monitoring of equipment, processes and user activity. The article describes the use of convolutional neural networks for predicting indicators and technical characteristics of equipment and communication channels. An anomaly detection module structure has been developed for monitoring the operation of the enterprise resource planning system. An example of training data for a neural network is given. The experimental results confirmed the effectiveness of the proposed approach.
Augmented reality for SCADA
Authors: Byvaltsev Sergey V
Published: May 2020

Questions of construction of the Augmented Reality for application in SCADA-systems are considered. It is marked, that last years researchers from Russia actively started studying this branch. The author considers the augmented reality in a section of a reality-virtuality continuum taking into account restrictions of memory of the operator and social aspect of application augmented reality. Recommendations on environmental analysis and reading of data from display devices are given. The greatest efficiency of application augmented reality is seen in joint activity and carrying out of works which demand coordinated work. The necessity of the further researches for developing of network architecture, safety, confidentiality and protection against extraneous intervention is noted. Advantage of augmented reality is reuse of software, databases and knowledge. At the replacement of maintenance staff and users of SCADA-system there is no need to teach them all the knowledge and skills at once. They will receive them directly in the process of application.
Adaptive fuzzy model for detecting of vulnerabilities of unmanned vehicles interfaces based on evaluation of the information state of resources
Authors: Skatkov A V , Bryukhovetskiy A A , Moiseev D V
Published: May 2020

An adaptive model for detecting vulnerabilities in the interfaces of unmanned vehicles based on dynamic assessment of information states of resources is proposed. The method is based on fuzzy logic and immunological principles. Rules classify objects belonging to several classes at the same time with different degrees of belonging. Resource state recognition is performed under conditions of a lack of a priori information about the properties of the intrusion source and the stochastic nature of the recognized events. To increase the level of reliability of vulnerability detection, the model makes adaptive dynamic tuning of decision-making rules for classifying the information state of unmanned vehicle resources.
A conceptual model of communication for intelligent agents in the infrastructure of smart transportation systems
Authors: Shevchenko V I , Skatkov A V , Bryukhovetskiy A A , Chengar O V , Kokodey T A
Published: May 2020

In this article, at a conceptual level, the issues of data exchange between objects of a complex cyber-physical system using a multi-agent approach are considered. A multi-agent communication model of intelligent agents is described, which is the interaction of participants in the Smart Transportation information management space. Unmanned vehicles, pedestrian mobile devices, smart traffic lights, traffic signs and other infrastructure of the Smart City are considered as model agents.
Security threats of NB-IoT and countermeasures
Authors: Mentsiev Adam U , Magomaev Tamirlan R
Published: May 2020

IoT technology is already an integral part of our business and social life. This technology can be seen in almost every big city in Russia. Many leading countries are at a relatively high level of mass adoption of the Internet of Things technology. Many areas of the country’s activity are directly dependent on the Internet of things: “smart house”, “smart city”, digital agriculture, automation of production, Industry 4.0, etc. At the same time, it is necessary to take into account the fact that the multifaceted use of technology entails a special interest of attackers and an increase in security threats. Here, for specialists, the question of ensuring security arises. This article discusses the characteristics of the Internet of things devices, the main threats to the security of the narrowband Internet of things and provides recommendations for countermeasures.
A mathematical model for assessing security of restricted-access information
Authors: Rosenko A P , Petrenko V I , Tebueva F B , Gerasimova A A
Published: May 2020

An immediate problem of the theory on information security lies in measuring security of restricted-access information. The existing methods are not capable to solve the above problem due to lack of a priori background information. The paper is aimed at filling the gap created in the theory on assessing RAI security using quantitative approach.
Spectral curves for the multi-phase solutions of Manakov system
Authors: Smirnov A O , Frolov E A , Gerdjikov V S
Published: May 2020

The hierarchies of multi-component models of Manakov type are briefly outlined. Many of them have important applications to nonlinear optics. Next we develop a method for calculating the spectral curves for the multi-phase solutions of these equations. We discuss also other multi-component generalization of Manakov system to which our method can be extended.
Comparative analysis of methods for digital system debugging at the design stage
Authors: Ivannikov A D
Published: May 2020

The paper discusses debugging methods, that is, identifying and correcting errors in designss of digital systems specified by the circuit diagram of hardware and the text of software or firmware. Debugging is considered on a fabricated layout of hardware and on a software model of a digital system, as well as on a combination of the layout of individual blocks and a software model of the rest of the system. The methods of organizing debugging modes for all considered methods are analyzed. It is indicated that for digital systems on a chip, the most effective method is to debug design using a software model.
Electronic digital signature
Authors: Dzhangarov A I , Suleymanova M A
Published: May 2020

The object of this article is an electronic digital signature that allows to identify the author of the document. An electronic digital signature is some details of the source document obtained by converting information using special cryptographic algorithms. In addition to determining the author, it also allows to check the accuracy of the information and evaluate its distortion from the moment of the formation of the signature itself. As part of the scientific work, a software product was created that was able to sign electronic documents using one of the well-known cryptographic algorithms, and the prospects for the development of this direction were also analyzed. Despite the fact that the electronic signature has not yet become widespread, there is a high probability that its widespread adoption in public and private institutions is expected in the very near future.
An approach to algorithmizing the problem of vertex minimization of nondeterministic automata. Part I. Problem statement and the brief description of the basis methods
Authors: Abramyan M E , Melnikov B F
Published: May 2020

We consider our approach to the problem of vertex minimization of nondeterministic finite automata. It comes down to constructing a lot of grids and knocking out on its basis an optimal (or pseudo-optimal) subset. However, our problem is much more complicated than the classical problem of optimal coverage of a set, since we need to succeed (to build pseudo-optimal solutions in an acceptable time) in its particular case; in this particular case, we are considering has many specific features, which are not characteristic of most other variants of the problem of optimal coverage of a set. In the first part of the paper, we consider issues related to the brief description of the basic branch-and-bound method, testing approach to the basic method, and some modifications the basic algorithm.
Multi-chip assemblies combining wire bond and flip-chip package technologies
Authors: Ershova N Yu , Reginya S A , Lunkov P V , Kirienko D A
Published: May 2020

The paper considers technological solutions for the production of multi-chip package-on-package assemblies. To evaluate the capabilities of the manufacturer product line the PoP prototype samples were produced. The results of qualification tests of PoP prototype samples are presented. Conclusions have been drawn on the applicability of systems in package, combining the installation technologies of Wire Bond and Flip-Chip crystals.
Technology for reducing urease activity in soybeans
Authors: Morgunova N L , Rudik F Y , Semilet N A , Lovtsova L G , Ivanova Z I , Pfeifer Sh A
Published: May 2020

The main biochemical component of soy is protein, but it contains quite active anti-nutritional substances, such as proteolytic enzyme inhibitors, urease, lectins and others that reduce its nutritional value. This is the main deterrent to the use of soy in raw form for feeding farm animals and widespread use in the food industry. The article deals with the issues of inactivation of anti-nutrient substances using low-frequency ultrasound in water with hydrogen peroxide.
Bioindication methods in environmental engineering
Authors: Esyakova O A , Voronin V M
Published: May 2020

One of the activities in the field of environmental engineering is the monitoring of environmental pollution, in which a preliminary stage is carried out – bioindication studies. The Siberian spruce assimilation apparatus is a very reliable tool for the air environment estimation because of high sensitivity to pollutants and the possibility to perform an annual observation. The system of aerogenic pollution estimation in terms of biochemical parameters deviations is considered to be rather reliable. The anthropogenic air pollution leads to the change of the plant metabolism. The increase of the terpenoid compounds content in the needles is due to their biosynthesis intensification as the response of the plant to an unfavorable environment. Under similar conditions other secondary metabolites – phenol substances – are accumulated in tissues. The phenol compounds content in the Siberian spruce assimilation apparatus is increased by more than 60% in the polluted areas compared with the background one. The pigment system of the assimilation apparatus is influenced by the air pollution as well. This study suggests the Siberian spruce assimilation apparatus to be an indicator of air pollution. Results of its composition research and morphometric parameters give a full picture about environment condition.
Numerical-analytical method for determining the barodiffusion coefficient of technological process of ion-exchange suspension filtration
Authors: Palvanov B , Saidov U , Yusupova J , Kravets O Ja
Published: May 2020

A method for determining an experimental parameter of the barodiffusion coefficient for conducting computational experiments in technological process of filtering liquid ionized solutions is given in the paper. The developed mathematical model allows obtaining calculated data for the study of other parameters of the unit, taking into account the physicomechanical properties of fluid when cleaning solutions in an ion-exchange column. An analytical solution to the systems of linear equations of diffusion and mass transfer with a constant flow velocity and a variable pressure gradient is obtained. Using these data we can verify the adequacy of the developed mathematical models of the mass transfer process in porous media.
Analysis of some chemical indicators of soils of industrial-oil-polluted territories
Authors: Gerasimova L A , Eremina I Yu , Makarskaya G V , Kuklina A I
Published: May 2020

The object of the research is the territory of the military unit (Technical missile base). The subject of the research is chemical pollution of soil and structures on the territory of the former military unit. There remained destroyed structures for various purposes on the territory and there is visible soil pollution with various chemicals, presumably oil products and rocket fuel components. Methods of instrumental and titrimetric analysis of water extraction of soil samples were used to assess the pollution. A total of 13 soil samples and a control sample were analyzed. All samples were subjected to multicomponent complex analysis, during which acidity - Ph, salinity, electrical conductivity, alkalinity, Ca, Mg, Cl ion content were determined in each sample. An attempt is made to answer the question about the composition and danger of such anthropogenic pollution, as well as about the possibility of further use of these lands.
Synthesis of sulfated starch-casein complex
Authors: Kazachenko A S , Vasilyeva N Yu , Malyar Y N , Kazachenko A S , Slyusareva E A
Published: May 2020

In this paper, a new method for the synthesis of the sulfated starch-casein complex is proposed. The resulting new complex was characterized by FTIR and UV-spectroscopy. It has been shown by FTIR spectroscopy that both nitrogen atoms and the carboxyl group of amino acid residues are protonated in casein. The sulfated starch-casein complex obtained in this work may have biological activity, as well as its analogues isolated from plants, fungi, and microorganisms, as well as synthesized in laboratory conditions.
A dynamic model of the impact of engineering services on the parameters of the economic system
Authors: Shinkevich M V , Klimenko T I , Ostanina S Sh , Garipova G R
Published: May 2020

The article presents the author’s approach to the concept of engineering as a service sector of innovative infrastructure. The key components of engineering as a service are identified. A factor analysis of the impact of the engineering services sector on the development parameters of an innovative economy has been carried out. Based on it, a prognostic dynamic model of the contribution of the engineering services sector to the development of an innovative economy is proposed.
Calculation of the optimal number of redundant elements of power systems using the Lagrange multipliers method and information theory
Authors: Karandeev D J , Dulesov A S , Bazhenov R I , Karandeeva I J
Published: May 2020

The article analyzes the applicability of information theory tools in solving problems of analysis of functioning engineering networks. This applicability is justified by the laws of distribution of random variables. There is a need to develop methods for determining the number of redundant elements. A method for calculating the optimal number of redundant elements of an engineering network based on the method of Lagrange multipliers taking into account the measure of information uncertainty is proposed. At the end of the article, an example of calculating the number of redundant elements that should be added to the system to increase the system reliability level to the required value is shown.
Assessment of factors ensuring industrial safety of enterprises of the electric power complex
Authors: Gibadullin A A , Sorokina V V , Sadriddinov M I , Petrusevich T V , Izzuka T B , Kokurina A D
Published: May 2020

The presented study is devoted to the issues of industrial safety of workers employed in harmful and hazardous working conditions in the Russian electric power complex. Because of the analysis, it was revealed that about a third of the employees of the electric power complex are employed in harmful and dangerous working conditions, and the number of workers receiving compensation for harmful working conditions is reduced annually and in 2018 reached a minimum. At the end of the study, a model for ensuring industrial safety for working in harmful and hazardous working conditions was proposed, including material incentives, the issuance of special products, social assistance and medical and preventive measures. The implementation of the model will increase industrial safety for employees working in harmful and hazardous working conditions.
Research of an electromagnetic vibrator with a non-linear power supply
Authors: Ibadullaev M , Nuraliev A , Esenbekov A
Published: May 2020

Electromagnetic vibration exciters (EMW) are widely used in various sectors of the national economy (chemical, mining, engineering, oil and gas) for transportation and simultaneous processing of bulk cargo, mixing and batching, grinding, separation, etc. Recently, more and more attention has been paid to the problems of their automation. This is caused by the fact that controlled vibration machines can significantly increase and stabilize at a given level of technological processes. Automation of EMVV can be solved only by developing automatic stabilization of performance with closed feedback. Rational design of this kind of sustainability needs theoretical justification. This article discusses the analysis of self-oscillations in electromagnetic exciters with a nonlinear power source used in vibration technology. To analyze the equations, the averaging method was used. Using this method allows obtaining periodic solutions for current and mechanical vibrations. The results of the analysis can be used in the development of self-oscillating electromagnetic exciters.
On the issue of using a robotic manipulator to perform operational switching in electrical distribution devices and substations
Authors: Dmitriev A A , Martyanov A S , Yurkin V V
Published: May 2020

During the operation of power supply systems, a sufficiently large number of labor cost of operational personnel is required to perform operational switching. The classification of operational switching has been considered in the article; conclusions have been made about the possibility of using robotic manipulators for some of them. A description of the design of this device and the functions that it should have has been given. A block diagram of the collection and exchange of information and control signals for the power supply system is presented, in which the robot manipulator automatically performs a certain set of manipulations according to a predetermined algorithm or at the command of an operator. Conclusions are drawn on the appropriateness of using these devices in substations with large room for installing switchboards.
Assessment of the influence of weather conditions on the concentration of PM2.5 in the atmosphere of Krasnoyarsk
Authors: Tokarev A V , Shaparev N Ya
Published: May 2020

The influence of weather and terrain on the seasonal distribution of surface concentration PM2.5 in the atmosphere of the city of Krasnoyarsk (Russia) in 2018-2019 is analyzed. We use data from the Geoportal developed by the authors, which has a data connection with the regional monitoring system of weather conditions (wind direction and speed, relative humidity and air temperature, atmospheric pressure) and particle concentration PM2.5.
The beneficial using the heat of the exhaust gases of the furnaces of the technological unit for the ethylene oxide production
Authors: Balzamov D S , Balzamova E Yu , Bronskaya V V , Oykina G I , Rybkina E A , Shaikhetdinova R S , Kharitonova O S
Published: May 2020

The solution to the issues of increasing energy efficiency and optimizing the work of enterprises in the petrochemical industry is due to the constant increase in prices for primary energy resources. In this article, the technological site for the production of ethylene oxide, which is characterized by high energy intensity, is considered as an object of study. The largest consumer of energy in this area are technologically furnaces. In the framework of the study, an analysis of the operation of the furnaces was carried out, a balance of the heat-technological flows of the site was compiled, the potential for energy conservation in the utilization of the exhaust gases of the process furnaces was calculated, and the possibility of the beneficial use of the obtained heat was calculated. The economic efficiency and payback period of the proposed method of utilization of flue gases is determined.
Optimization of environmental performance of a car diesel engine running on natural gas by reducing carbon black in the exhaust gas
Authors: Likhanov V A , Rossokhin A V
Published: May 2020

The article considers ways to reduce the soot content in the exhaust gases of motor-tractor diesels (smoke) by using an alternative fuel-compressed natural gas. The influence of gas engine fuel on the parameters of the combustion process and soot content in the cylinder and in the exhaust gases of a high-speed diesel D-245.12C with a dimension of 4CHN 11,0/12,5 (turbocharged, liquid-cooled) is considered. The results of experimental and theoretical studies are presented, which allow us to draw a conclusion about the efficiency and feasibility of using this fuel to reduce the smoke content of exhaust gases.
Situational model of decision-making system based on environmental monitoring data in the conditions of urban development
Authors: Ivanova I G , Danilov A D , Burkovskii V L , Gusev K Yu , Gusev P Yu
Published: May 2020

Urban population growth is a trend of industrial society. According to the annual UN reports on the rate of urbanization of countries in 2007, the urban population became equal to the rural population in the world and continues to increase. As a result, following the population growth and the growth of cities. Development planning of urban areas is a complicated and important task, requiring the solution of a number of social issues: the optimization of the location of municipal facilities, improve the quality of life of citizens, the formation of leisure and recreational areas, the formation of the urban landscape and design, the formation of zones of residential development, the transport infrastructure, street and road network with minimal impact on the environment, placement of objects of social sphere, development of suburban areas. Compaction of the development of modern Russian cities, with narrow streets and often no sidewalks, makes the task of reducing the level of environmental safety in megacities difficult, and in some cases impossible. On the other hand, urban areas are constantly increasing due to the introduction of new districts, residential areas and cottage settlements, which requires taking into account the level of environmental safety at the planning stage of their development.