Pages Navigation Menu
Submit scientific paper, scientific publications, International Research Journal | Meždunarodnyj naučno-issledovatel’skij žurnal

2019

ISSN 2227-6017 (ONLINE), ISSN 2303-9868 (PRINT), DOI: 10.18454/IRJ.2227-6017
ПИ № ФС 77 - 51217, 16+

FEATURES OF CHEMICAL COMPOSITION OF SURFACE WATERS AND BOTTOM SEDIMENTS IN RIVERS AND LAKES OF KHMAD-YUGRA

Posted in 2019, GEOLOGY AND MINERALOGY, Issue № 12(90) December 2019 | 0 comments

The paper considers the chemical composition of surface waters (rivers and lakes) and bottom sediments in the Khanty-Mansyisk Autonomous District-Yugra, reveals the conditions for the formation of the chemical composition of water and the transition of chemical elements from liquid to a solid phase. A technique for analyzing the chemical composition of surface water and bottom sediments based on the combined use of cluster and correlation analysis methods is presented in the paper. The relationships between chemical elements in the water, bottom sediment system are studied as well.

Read More

ANALYTICAL FUNCTIONS OF AN COMPLEX VARIABLE WITH PARAMETERS

Posted in 2019, Issue № 12(90) December 2019, PHYSICS AND MATHEMATICS | 0 comments

In this paper, we consider the analytic functions of a complex variable with small parameters generated by some operators. We study the asymptotic behavior of a function with respect to a small parameter. The problem is solved using line-level harmonic functions. The analytic domain of the function is divided by some lines into parts, and in some parts the limits (by a small parameter) exist, but in others they are infinite or do not exist.

Read More

ON GRAVITATION MECHANISM

Posted in 2019, Issue № 12(90) December 2019, PHYSICS AND MATHEMATICS | 0 comments

The analysis of the gravitation process mechanism is carried out using the condition of a stationary state in wave-particle interactions and within the framework of non-relativistic mechanics. The author obtained an equation of the functional dependence of the constant of gravity on the electric constant. It is assumed that gravity is the wave contribution from the mass of charged particles when they move in the field of central forces.

Read More

SOME ASPECTS OF INTEGRAL GRAHANGE METHOD APPLICATION FOR DESCRIPTION OF FEATURES OF DEEP-WATER DRAINING OF OIL PRODUCTS IN CASE OF MARINE PIPELINES DAMAGE

Posted in 2019, Issue № 12(90) December 2019, PHYSICS AND MATHEMATICS | 0 comments

The author uses a mathematical model describing the propagation of a multiphase flooded jet caused by the damage to the oil-producing structure or the marine pipeline used for the transportation of hydrocarbons. The flow features of multiphase and single-phase (gas) jets are studied. The author also studied the effect of hydrate formation on the jet parameters. The integral Lagrange method is used to calculate the thermophysical parameters. As a result of these calculations, the author obtained the dependences of temperature and velocity on the vertical coordinate. Data analysis of dependencies allows predicting jet behavior and study the possibilities of application of devices for leak detection.

Read More

APPLICATION OF NEURAL NETWORKS FOR COGNITIVE STRUCTURES MODELING

Posted in 2019, ENGINEERING, Issue № 12(90) December 2019 | 0 comments

The article discusses issues related to solving the problem of constructing and processing cognitive structures based on the use of neural networks. The authors consider the organization of a specialized model that is configured to solve the problem and denoted as a “neural network cognitive model (NNCM).” They describe the main elements of this model, designated as a “neurocognitive element (NCE)” and the rules for its formation. The regulations of cognitive mapping structures to neurocognitive models are considered as well. Both structural descriptions of these models and procedural models of their formation are presented in the paper.

Read More

PROBLEM OF ENSURING AVIATION SECURITY IN TERRORIST THREATS

Posted in 2019, ENGINEERING, Issue № 12(90) December 2019 | 0 comments

This paper considers the issue of ensuring aviation security in case of terrorist threats. Terroristic acts carried out on air transport have a significant frightening effect on the world community, show the insufficient effectiveness of the security measures taken in the fight against terrorism, which defines the most important goal as reducing the risk of terrorist attacks on air transport. In the framework of the article, the relevance of the problem is substantiated, the existing methods for achieving the given goal and the author’s proposal are presented.

Read More

INFLUENCE OF GENOTYPIC WHEAT GRAIN FACTORS ON STRUCTURAL AND MECHANICAL PROPERTIES OF ITS MILLING PRODUCTS

Posted in 2019, ENGINEERING, Issue № 12(90) December 2019 | 0 comments

The article presents a comparative description of the structural and mechanical properties of wheat grain based on particle size analysis of grain grinding products. The most common indicator of these properties is the hardness index, which was evaluated: by the passage of a certain sieve, as well as by the advanced particle size distribution – fractographic method, which allows using “computer vision” to take into account not only the particle size, but also their shape. A study was made of the influence of the grinding method on the accuracy of assessing grain hardness.

Read More

MAIN DEVICES AND EQUIPMENT FOR AUTOMATED ASSEMBLY – TANK WELDINGS

Posted in 2019, ENGINEERING, Issue № 12(90) December 2019 | 0 comments

The article describes the main stages of assembly – welding of a tank of large length, which has a non-standard shape. The main technological problems of welding in inaccessible places were solved. 3D-models of devices are made, their basic elements are described in the paper. Welding by a robotic complex is considered in detail, and specific welding robots are selected, their geometric parameters are universal and suitable for working with most of the products. The main types of welding of various elements of the power set of the tank are selected.

Read More

TUBULAR CONDUCTORS USAGE FOR REDUCING POWER LOSSES IN POWER LINES

Posted in 2019, ENGINEERING, Issue № 12(90) December 2019 | 0 comments

This paper explores the possibility of using tubular conductors with solid aluminum as an alternative to classic stranded wires to reduce power and voltage losses during power transmission over power lines. The author carried a preliminary review of the modern types of wires used in overhead power lines, identified their advantages and disadvantages. According to the calculation it was found that the tubular conductors have less active resistance and less linear inductive resistance in a three-phase system, which reduces power losses and increases line throughput. The author considers a possible technical method of their production, and analyses the prospects of improving the mechanical properties of the proposed conductors through the use of a composite core.

Read More

CONTACTLESS PAYMENTS SECURITY RESEARCH

Posted in 2019, ENGINEERING, Issue № 12(90) December 2019 | 0 comments

The article descibes a new technique for ensuring the security of contactless payments. The new method significantly improves the contactless payment security with NFC-enabled smartphones and bank cards with a similar chip. The authors identified relevant threats in the contactless payment system, they conducted analysis of the security of the contactless payment system, and based on the identified security threats, developed recommendations to address them and increase the level of security with the use of contactless payments.

Read More

APPLICATION OF FOSSIL MEAL IN FACADE CERAMICS PRODUCTION, OBTAINED USING GLASS SCRAP

Posted in 2019, ENGINEERING, Issue № 12(90) December 2019 | 0 comments

This work presents the mixture composition development results, including low-plastic clay as the main component, boric acid as a fluxing agent, glass scrap as a flux-hardening additive and a fossil meal as a component forming a finely porous ceramic structure. The results of the work include the dependences of the bending strength and thermal conductivity of facade ceramics on the ratio of the components of the mixture, confirming the role of each of the additives and allowing to determine their ratio, ensuring the performance of ceramics. The work also contains information on the basic physical and mechanical properties of the developed material, from which it follows that the obtained ceramics is energy efficient, which allows obtaining products with reduced mass and meeting the regulatory requirements for tiles for external cladding of walls and socles.

Read More

AUTOMATION OF FIRST LIFT ON THE EXAMPLE OF WATER SUPPLY SYSTEM IN NOVOORLOVSK VILLAGE OF ZABAYKALSKY KRAI

Posted in 2019, ENGINEERING, Issue № 12(90) December 2019 | 0 comments

This work presents a brief description of the project on the development of a hardware-software complex for controlling pumping units of the first lift of a water supply system in Novoorlovsk village of Zabaykalsky Krai. The goal of the work is to increase the economic efficiency of the accumulating reservoir water filling process in the first lift. Besides, the complex should provide high reliability of the operation of the first lift by preventing freezing of the pipeline. The paper presents the analysis of the technical and economic efficiency of the proposed solutions.

Read More

ANALYSIS OF CARGO TRANSPORT STATE IN MOSCOW REGION AND PROSPECTS OF ITS MODERNIZATION

Posted in 2019, ENGINEERING, Issue № 12(90) December 2019 | 0 comments

The primary goal of this work is to define the parameters affecting the truck fleet modernization strategy, based on the analysis of the state of freight transport in the Moscow region. The following tasks were identified to achieve this goal: to study statistics on the average age of the truck fleet and types of vehicles used in the Russian Federation, to analyze the interview of the head of the Department of Transport and the Development of Road Transport Infrastructure of Moscow. Based on the information collected, the author draws a conclusion about the possibility of modernizing vehicles, its timing and development prospects.

Read More

MICROCLIMATE OF CULTIVATION STRUCTURES (GREENHOUSES) UNDER CONDITIONS OF FAR NORTH

Posted in 2019, ENGINEERING, Issue № 12(90) December 2019 | 0 comments

The paper presents the heat balance calculation of greenhouse plants in the Far North and the analysis of options for heat and ventilation equipment. The greenhouse farm with a total area of 576 m2 manufactured by Agrisovgaz LLC is taken as the design project. According to the results of this work, the construction of part of the greenhouse from the timber, and the rest of the enclosing structures from the double-glazed window was the best option. The analysis of four types of heating systems was conducted as well; the use of water-air heating turned out to be the most appropriate.

Read More

SYSTEM FOR REAL-TIME MOBILE ROBOT CONTROL

Posted in 2019, ENGINEERING, Issue № 12(90) December 2019 | 0 comments

This work is devoted to the development of a system for real-time mobile robot control. The system allows remote control of a robot, or its autonomous movement to the destination real-time by a user with a detour of obstacles, with simultaneous localization and map building.

Drive control and odometry are implemented on the stm32f7 nucleo board using the ChibiOS real-time operating system, and navigation on the raspberry PI 2B single-board computer is based on ROS packages such as move_base, gmapping and various drivers for interacting with sensors and the microcontroller. Development also includes the implementation of a simulation mode using gazebo_ros packages.

The developed control system was tested in the simulator, and then indoors – the tasks assigned to it were successfully completed.

Read More

HUMAN RESOURCES MANAGEMENT CONSTRUCTION COMPANY

Posted in 2019, ENGINEERING, Issue № 12(90) December 2019 | 0 comments

The article shows the relevance of human resources management in the construction industry. The problems of improving the efficiency of management decisions are analyzed. The content of the management decision through its main functions is revealed. The content of resource management planning through its function is disclosed: the establishment of permanent and temporary relationships between all departments of the construction enterprise, the definition of the order and conditions of their functioning. The principle of operation of the management process at the enterprise as the development of the vertical division of labor, that is, the organization of labor of managers to coordinate the activities of structural units and performers.

The analysis of the structure of the construction organization. The ways of increasing the efficiency of human resources management are shown.

Read More

INFLUENCE OF HARDENER AND MODIFIER TYPE ON ACID PERMEABILITY OF EPOXY COATINGS

Posted in 2019, ENGINEERING, Issue № 12(90) December 2019 | 0 comments

The authors studied and acidophilic sorption kinetics and diffusion profiles of a sulfuric acid solution in anticorrosive materials based on epoxy resin cured by amines or anhydrides. They also evaluated the prospect of using an acidophobic material based on anhydride curing to form the outer layer of the composite coating.

Read More

DEVELOPMENT OF POLYMER COMPOSITION WITH REDUCED FLAMMABILITY BASED ON PLASTICIZED POLYVINYL CHLORIDE USING SLUDGE WASTE FROM ENGINEERING PRODUCTION

Posted in 2019, ENGINEERING, Issue № 12(90) December 2019 | 0 comments

The paper presents the results of the development of a low flammability polymer composition based on plasticized polyvinyl chloride with the use of machine-building waste, galvanic sludge as a flame retardant. This polymer composition can be used in the cable industry for insulation of the inner and outer shells of wires and cables. Introduction of galvanic sludge to the formulation of plasticized PVC composition in the amount of 5-15 wt.h. allows us to reduce the flammability of cable compound, without deterioration of the main technological parameters, such as thermal stability and melt flow rate.

The use of galvanic sludge as a flame retardant additive in an amount of 5-15 wt.h. leads to a reduction in the cost of formulation of cable compound, reducing its combustibility, saving material resources, as well as solving the problem of safe disposal of galvanic sludge.

Read More

MODERN REQUIREMENTS FOR THE ACCREDITATION BODY ACCREDITING COMPLIANCE ASSESSMENT BODIES

Posted in 2019, ENGINEERING, Issue № 12(90) December 2019 | 0 comments

The article is devoted to a comparative assessment of two standards: GOST ISO/IEC 17011-2018 and GOST R ISO/IEC 17011-2008, which determine the requirements for accreditation bodies accrediting conformity assessment bodies, as well as the analysis of the results obtained to determine the significance of the introduction of provisions of new versions of standards and the adoption of new requirements in order to comply with them by accreditation bodies. Fulfillment of modern requirements by accreditation bodies makes it possible to improve the effectiveness and efficiency of ongoing activities.

Read More

APPLICATION OF GLOBAL INFORMATION SYSTEMS IN MEDICINE

Posted in 2019, ENGINEERING, Issue № 12(90) December 2019 | 0 comments

Information is not always accurate, complete and reliable in the real world; in fact, this makes it difficult to make a specific decision. This is one of the biggest problems in the medical field, since saving of a human life depends on the timely identification and diagnosis. Often, an asymptomatic or ambiguous course of mumerous oncological diseases leads to an erroneous diagnosis, and subsequently to an incorrect treatment. In order to avoid such cases and to minimize medical errors, medicine urgently needs to create and implement new automated decision-making systems that meet modern requirements with an enormous amount of information. The article discusses the main goals of medical decision support systems, using pancreatic cancer as an example.

Read More