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

2021

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

AN ANALYSIS OF PROMISING METHODS FOR THE PRODUCTION OF VACUUM INSULATION PANELS FOR PASSENGER CARS

Posted in 2021, ENGINEERING, Issue № 02(104) February 2021 | 0 comments

The current article discusses the main trends in the development of car building, the main objective of which is to improve their dynamic characteristics by reducing weight. One of the ways to reduce the weight of a passenger car without losing its dynamic properties is to use a vacuum thermal insulation based on honeycomb panels in its design; however, the production of these thermal insulation materials increases the requirement for equipment and production in general. The publication discusses two main methods of producing vacuum thermal insulation using an extrusion line and a 3D printer. Using the data of annual reports of the main supplier of passenger cars for JSC “Russian Railways” and the market value of materials, the study conducts a comparison of the costs for the production of a validation batch and calculates the production cost of vacuum thermal insulation. The article contains two variants of a comparison of investment projects for the production of vacuum thermal insulation for passenger cars.

Read More

ASPECTS OF THE BUDGET IMPLEMENTATION OF SUBSIDIZED FEDERAL SUBJECTS OF THE RUSSIAN FEDERATION

Posted in 2021, ECONOMICS, Issue № 02(104) February 2021 | 0 comments

The main condition for ensuring that the authorities of the federal subjects of the Russian Federation perform their functions is to ensure a proper budget condition. It is well known that there are two types of regions in the Russian Federation: the donor regions and the recipient regions. This distinction is due to the specifics of the budget formation of a particular region. The donor regions supplement the state budget with their own surplus revenues. There are 13 such regions in Russia, which is a fairly low figure by world standards. All the other subjects of the federation are recipients.

The article discusses the theoretical aspects of the subsidized nature of regional budgets and Investigates the causes and problems of subsidized budgets of the federal subjects of the Russian Federation. The study also contains an analysis of the dynamics of the implementation of the budget revenues of Saratov Oblast as a recipient region. The authors of the research identify characteristic trends and draw respective conclusions.

Read More

SIMULATION AND ANALYSIS OF A PUBLIC TRANSPORT NETWORK VIA VISUAL STUDIO

Posted in 2021, ENGINEERING, Issue № 02(104) February 2021 | 0 comments

Public transport plays a huge role in the life of a modern person because it helps get to the desired destination quickly and cheaply. However, traffic jams have a significant impact on the speed of transportation. The current article simulates and analyzes a virtual public network in order to assess the impact of traffic congestion on the travel time of public transport. The study obtains the following results: the average time spent by a public transport vehicle under study on weekdays exceeds the average time in the corresponding time intervals of the weekend. The results are due to the fact that traffic is lower on weekends. Also, the study establishes the dependence of the average time of completing a route from the time of switching of traffic lights: the rout completion time grows approximately with the exponential rate with increasing duration of switching of the red light and reducing the duration of the green light.

Read More

REFRIGERATION COMPRESSOR FOR OPERATING ON REFRIGERANTS THAT CHEMICALLY INTERACT WITH THE COPPER PARTS OF AN ELECTRIC MOTOR

Posted in 2021, ENGINEERING, Issue № 02(104) February 2021 | 0 comments

The current article provides a general overview of the problems and factors for the implementation of the designs of a refrigeration compressor that can work with refrigerants that chemically interact with the copper parts of the electric motor and its subsequent production. The study conducts an analysis of the advantages and disadvantages of each of the specific design solutions as well as describes the technological obstacles of the production of such compressors on the basis of available means of production and in the established industry of refrigeration engineering. The paper selects the most preferred options for their practical application based on the consideration of the potential of each compressor design for its subsequent implementation and the potential reliability and safety during their operation.

Read More

ON CALCULATING THE FILTRATION COEFFICIENT OF SANDY SOILS

Posted in 2021, ENGINEERING, Issue № 02(104) February 2021 | 0 comments

The current study examines the calculation of the filtration coefficient of sandy soils through laboratory tests. The existing standard methodology causes some difficulties in the calculation due to the inaccurate wording of the test, which leads to different interpretations. It also requires performing intermediate calculations, constructing an approximate schedule, which is a time-consuming procedure, especially for employees of production laboratories. The study demonstrates that the filtration coefficient of the sand mixture is affected, among others, by the gravel component, which is not taken into account in the standard method.

It is also established that before the start of the tests, there are no recommendations for selecting the mode and the device of the filtration. The study notes two filtering modes and the associated pressure gradient and the initial height of the water level in the device that affect the calculation as well as shows the possibility of simplifying intermediate calculations, including those without plotting. The research proves the efficiency of introducing the section on accounting for the gravel component of sandy soil into the calculation.

Read More

TECHNOLOGICAL SOLUTIONS FOR THE RENOVATION OF CARBURIZED AND NITRO-CARBURIZED PARTS

Posted in 2021, ENGINEERING, Issue № 02(104) February 2021 | 0 comments

The current study establishes that the permissible amount of wear on the restored carburized (nitro-carburized) parts depends on the technical conditions during the operation of a vehicle. An additional condition for increasing the wear resistance of the workpieces can be an increase in the anti-scuffing properties of the active surface, which are achieved as a result of thermal oxidation. The surface finish and the cooling rate of the parts after welding will have a direct impact on the formation of pores and the depth in the layer of the weld. A prerequisite for this is the preservation of no less than 0.4 % of carbon in the surface layer of the worn part. The study proposes to use induction-heating installations for fast heating of worn elements of the parts for plastic flow.

Read More

IMPROVING THE QUALITY OF BAKERY PRODUCTS VIA ALTERNATIVE RAW MATERIALS

Posted in 2021, ENGINEERING, Issue № 02(104) February 2021 | 0 comments

The article reveals the positive effect of watermelon concentrate on slowing down the staling process of bakery products. When it is applied in an amount of 5 % by weight of flour, the specific volume of bread increases by 14.5 %, the compressibility of the bread crumb both immediately after baking and after a day of storage was higher compared to the control. The degree of change in the compressibility index was the smallest. The paper presents the results of research on which of the components of watermelon concentrate has the main effect on slowing down the staling of bread and changing its properties, and describes the alleged mechanism of this phenomenon. We evaluated the effect of glucose, pectin, and fiber on slowing down the staling of bakery products, as well as the combined effect of these components. The greatest degree of slowing down the staling of bread is achieved due to the combined effect of sugar and pectin, which is due to an increase in the content of water-soluble components in bread and an increase in the amount of bound water.

Read More

SEARCHING FOR SOLUTIONS IN PRODUCTION SYSTEMS VIA GENERIC PROGRAMMING METHODS

Posted in 2021, ENGINEERING, Issue № 02(104) February 2021 | 0 comments

Currently, the concept of creating the basic elements of artificial intelligence systems is being actively developed. The article deals with the development of algorithmic and software tools for AI expert systems, the main component of which is inference. The study proposes an interpreter template for solving problems of modeling production systems in the state space with forward and backward chaining based on the depth-first searching method. Based on the strategy of creating lists of open and closed vertices, the study develops a polymorphic hierarchy of C++ classes that implement the main inference algorithms by means of generic programming.

Read More

DETERMINING THE VOLUME CAPACITY OF A FRESH AIR INTAKE VENT

Posted in 2021, ENGINEERING, Issue № 02(104) February 2021 | 0 comments

The current study describes the process of constant airflow into the room with the use of a technological device, namely the fresh air intake vent. The study found that the fresh air intake vent is able to develop a sufficiently high volumetric capacity, and thus can be used in industrial enterprises to maintain optimal parameters of indoor microclimate. The research also constructs the approximating function from the experimentally obtained data that allows for predicting the performance of the fresh air intake vent in the range of physical data that is not included in the data field of the experiment. A thermal imager image was obtained, which helps visually assess the temperature difference and thus prove the exterior flow of air into the room.

Read More

INFLUENCE OF RIVER BED DEFORMATIONS OF THE AMUR RIVER ON THE COASTAL INFRASTRUCTURE OF KHABAROVSK IN THE AFTERMATH OF THE 2013 FLOOD

Posted in 2021, ENGINEERING, Issue № 02(104) February 2021 | 0 comments

The 2013 Amur River flood, which can be described as an outstanding natural phenomenon, led to great material damage. The total damage from the flood, according to the statement of Deputy Prime Minister Yuri Trutnev made on April 25, 2014, amounted to 527 billion rubles. Having analyzed the situation, the authors note:

The Amur River in Khabarovsk is undergoing a decrease in water consumption because of its increase in the Pemzenskaya and Beshenaya channels.
The constant increase in water consumption in the Pemzenskaya channel poses a real threat (bridge scour) to the road-rail bridge over the Amur River.
The purpose of this study is a comprehensive assessment of river bed deformations, including those caused by catastrophic floods that lead to changes in the hydrological characteristics of the Amur riverbed in the Khabarovsk coastal zone. According to the results of the study, the authors conclude that it is necessary to regulate the flow of the Amur River to prevent the constant increase in water consumption in the Pemzenskaya channel.

As a preventive measure, it is proposed the construction of the above source Penzenskoy traverse the ducts of variable length. This will allow for the repulsion of the flow direction to the right bank of the Amur River in the area of Bolshoy Ussuriysky Island, reducing the flow of water into the channels with the subsequent construction of a permanent dam.

Read More

USING CLUSTER ANALYSIS METHODS TO COMPARE THE STRENGTH PROPERTIES OF TITANIUM ALLOYS AT 20-600 ° C

Posted in 2021, ENGINEERING, Issue № 02(104) February 2021 | 0 comments

The current article makes a comparison of the tensile strength of titanium alloys on the basis of cluster analysis, which allowed for identifying 8 groups of alloys with approximately the same intensity of strength reduction in the temperature range of 20-600°C. The study proposes models that allow for predicting the rupture resistance of alloys of different classes at different operating temperatures if the value of the rupture resistance of the annealed semi-fabricated products at room temperature is known.

Read More

POTENTIAL WAYS OF APPLYING INFORMATION TECHNOLOGIES IN THE ECOSYSTEM OF MUNICIPAL ENGINEERING

Posted in 2021, ENGINEERING, Issue № 02(104) February 2021 | 0 comments

The infrastructure of information objects has recently been increasingly introduced into everyday life in the form of a complex of “smart” devices as means of solving specific problems. Human life is the most expensive resource, and today it is possible to automate most processes, to ensure that technology monitors our safety and well-being. Despite the declared importance and the presence of positive trends, there are a number of objective and subjective problems in following this development trajectory. The article presents arguments on some popular issues related to this topic and provides a brief description of the finished project and its impact on a typical urban facility.

Read More

ANALYSIS OF THE EFFECT OF SEASONAL GROUND COOLING DEVICES ON THE AMOUNT OF EVAPORATION OF AN UNDERGROUND RESERVOIR OF LIQUEFIED NATURAL GAS

Posted in 2021, Issue № 02(104) February 2021, SCIENCES ABOUT THE EARTH | 0 comments

The current article discusses the possibility of underground isothermal storage of liquefied natural gas (LNG) in the permafrost layer. In today’s construction operations, seasonal ground cooling devices are widely used to minimize heat exchange between the ground and structures on it. The study analyzes the use of such devices for underground storage of liquefied natural gas. The authors propose a new design for a seasonal ground cooling device and perform a simulation of the interaction of the ground and underground storage with various options for the location of the SOW for two years. The study evaluates their influence on the number of daily LNG evaporations as well as draws conclusions on their effectiveness.

Read More

OPTIMUM RELATIONSHIP BETWEEN THE THICKNESSES OF THE LAYERS FOR ASYMMETRIC THREE-LAYERED MAGNETOSTRICTIVE-PIEZOELECTRIC STRUCTURE

Posted in 2021, Issue № 02(104) February 2021, PHYSICS AND MATHEMATICS | 0 comments

The current study examines the magnetoelectric effect in the three-layer magnetostrictive- piezoelectric magnetic-piezoelectric-magnetic material structure with opposite signs of magnetostriction of magnetic materials caused by flexural strain. The study demonstrates that the efficiency of the magnetoelectric transformation of the structure depends on the ratio of the thickness of the layers of magnetic and piezoelectric materials. The maximum conversion efficiency is achieved when the neutral line coincides with the interface between the piezoelectric and the magnetic materials. The research obtains the ratio between the layer thicknesses to achieve the maximum effect value. It is shown that the magnetoelectric coefficient can change the sign depending on the ratio of the thickness of the layers.

Read More

GEOMETRY OF WILD KNOTS AND WILD BRAIDS IN THREE-DIMENSIONAL WEBLIKE SPACE

Posted in 2021, Isssue № 01(103) January 2021, PHYSICS AND MATHEMATICS | 0 comments

This article describes an original method for constructing an analog of Antoine’s necklace in the vicinity of empty dots on the minimal surface of helixes of bent wild knots by means of knotted looping of 1-handles and the chaos probability measures with Hausdorff dimension that are related to the entire set of observed events in the entire direction of three-dimensional weblike space. In order to explore the pathological properties and helicoidal structures of bent wild knots and braids and to identify the features of the topological carpet, the study for the first time applies the method of “lattice with helical curvature” and demonstrates the distinct prospects for its further development.

Read More

GEOGRAPHICAL ASPECTS OF VARIABILITY OF GEOCRYOLOGICAL CHARACTERISTICS OF THE BOLSHEZEMELSKAYA TUNDRA

Posted in 2021, Issue № 02(104) February 2021, SCIENCES ABOUT THE EARTH | 0 comments

The current study presents generalized geocryological characteristics of the cryolithozone of the Bolshezemelskaya tundra. It is noted that their parameters are largely determined by geographical (natural) zoning. The distribution of permafrost rocks (MMP) by area and their thickness are zonal. The temperature regime is zonal to a lesser extent. The depth of seasonal thawing and freezing is almost not correlated with the landscape zoning, but is clearly related to the characteristics of the tracts, primarily with the composition of rocks, ground cover and mesorelief. Cryogenic processes and cryogenic structure partly correspond to landscape zoning, but largely depend on regional landscape categories. The territory is characterized by a multidirectional reaction of the permafrost to the warming climate trend.

Read More

FEEDING HABITS AND GEOGRAPHICAL DISTRIBUTION OF THE MANCHURIAN WAPITI (CERVUS ELAPHUS XANTHOPYGOS MILNE – EDWARDS, 1860) ON THE ACREAGE OF CHUGUYEVSKY SOCIETY OF HUNTERS AND FISHERMEN (PRIMORSKY KRAI)

Posted in 2021, AGRICULTURE, Issue № 02(104) February 2021 | 0 comments

The article provides data on the current condition and geographical distribution of the Manchurian wapiti population on the acreage of the Chuguyevsky Society of Hunters and Fishermen in Primorsky Krai. The study provides the results of an analysis of perennial population dynamics of the Manchurian wapiti and finds out the fluctuation reasons; the geographical and stationary distribution of the Manchurian wapiti on the land under study; the feeding preferences of the Manchurian wapiti. The research of the population condition of stationary distribution and feeding habits took place from 2017 to 2020 on 30 areas of 100 м² (10 х 10 м) in size. The research covered the 1000-hectare area of the Western part of the Chuguyevsky land in total. Woody forage plants make up 60-80% of the Manchurian wapiti feeding, occasionally it reaches up to 90-100%[6]. That corresponds with the gathered data on the tracked and obtained animals as well as the analysis of their gastric content (n = 3). The results also show that during winter woody forage plants make up 100% of their feeding. The population of the Manchurian wapiti on the land of Chuguyevsky Society of Hunters and Fishermen is on the increase, which indicates the completeness of their food supply. Throughout the year the Manchurian wapiti feeds on 120 feeding types that are produced by 75-80 plant species, the land food supply volume surpasses the current number of the animals under study.

Read More

FORMATION OF AGRO-INDUSTRIAL CLUSTERS WITH COMPREHENSIVE WASTE PROCESSING

Posted in 2021, AGRICULTURE, Issue № 02(104) February 2021 | 0 comments

The current article evaluates the efficiency of the agroindustrial clusters in Austria, Italy, France, and the United Kingdom. The research examines the issues of formation of agroindustrial clusters in Russia and establishes that the processing of agricultural waste in the agroindustrial clusters of the Russian Federation is not given enough attention and are not reflected in the guidelines. The study proposes and substantiates the structure of the agroindustrial cluster with comprehensive processing of agricultural waste as well as processing enterprises. The implementation of the proposed integration structure will allow for obtaining commodity products from waste and reduce the man-made impact on the environment. With the help of the best available technologies, comprehensive waste processing in the agroindustrial cluster will increase its competitiveness and attract additional investments.

Read More

EVALUATION OF THE EFFECTIVENESS OF VARIOUS LIME MATERIALS IN THE CULTIVATION OF VARIEGATED ALFALFA

Posted in 2021, AGRICULTURE, Issue № 02(104) February 2021 | 0 comments

The current article presents data on the effectiveness of liming with traditional and non-traditional (defecation mud) lime materials in the cultivation of alfalfa. When liming with traditional lime material, the increase in the green matter yield of alfalfa for the research period from 1996 to 1998 was 78.5 c / ha or 11.3 %, %­ while the dry matter yield amounted to 25.3 c / ha or 15.8 %. These data are confirmed by studies conducted in 2005-2007 (11.99 % of the green matter and 17.64 % of the dry matter). Liming increases the collection of feed units and digestible protein from 1 ha by 1.2 times. When using the defecation mud as an ameliorant (2009-2012), the study found that its use increases the yield of 1-3-year-old alfalfa by 15.73 % of the green matter and by 22.92 % of the dry matter. The collection of feed units and digestible protein increases by 1.3 and 1.5 times. In the course of the study, the authors obtained higher increases in the yield of green and dry matter of alfalfa as well as a higher collection of feed units and digestible protein from 1 ha when using defecation mud. In addition, waste management contributes to the protection of the environment, real and effective resource conservation while increasing soil fertility and crop yields. The use of defecation mud for liming acidic soils with limited financial resources of agricultural enterprises and a sufficiently high cost of liming in the Russian Far East (compared to the average Russian pricing) will contribute to the low cost, environmental safety and competiti­veness of modern agricultural production.

Read More

COLONIZATION OF AGRICULTURAL LAND BY WOODY VEGETATION IN THE ZONE OF MIXED CONIFEROUS AND BROAD-LEAVED FORESTS OF THE REPUBLIC OF UDMURTIA

Posted in 2021, AGRICULTURE, Issue № 02(104) February 2021 | 0 comments

The current study conducts an analysis of agricultural land colonization by woody vegetation on the basis of the Alnashsky municipal district of the Republic of Udmurtia. The specified municipal area is key for the forest area of mixed coniferous-broad leaved forests of the European part of the Russian Federation. Based on field surveys, surveys from unmanned aerial vehicles, and an analysis of departmental materials, the study identifies the area of arable land, hayfields and pastures excluded from active agricultural use for the period from 1992 to 2020. The authors of the study establish that during the analyzed period, the total area of used agricultural land decreased by 3.8%, the area of arable land decreased by 3.0, pastures by 7.4 and hayfields by 18.2%.

The process of returning most of the agricultural land colonized by woody vegetation to its original state presents certain challenges due to the significant labor and financial costs of cutting down and uprooting. Most of the colonized agricultural land is characterized by low soil fertility. It is advisable to use this land for creating fast-growing tree plantations.

Read More