bluuebunny/crossref_metadata_2025_split huggingface dataset:
Influence of the Shape of a Submarine Vessel on the Ice Breaking Capacity of Flexural-Gravity Waves
Authors: Zemlyak V L , Kozin V M , Vasilyev A S 
Published: February 2022

Abstract
The severe climatic conditions of the Arctic Regions impose great constraints on traditional methods of hydrocarbon extraction. That is why underwater technologies used for raw material extraction and handling are very promising. The influential factor for the safe operation of an submarine vessel (SV) during under-ice navigation is breaking the surface through the ice cover. The traditional method of coming to the surface does not always apply because of the difficult and dangerous maneuvering and ice partial depth of the broken ice. In fact, the load that arises in the ice moves generates a system of progressive flexural-gravity waves (FGW). In case the waves are intensive to a certain extent, the ice of heavy thickness can destruct. The paper informs on an experimental study of FGW ice-breaking capacity generated due to SV of different projects running. The experiments were conducted in an ice tank. The ice destruction efficiency is determined using the ice-breaking criterion. The authors conclude that the principal factor affecting the ice-breaking capacity is not the displacement of water, but a fineness ratio of a submarine ship, as well as a cross-section ship shape. The subject of the influence of the vessel depth on FGW characteristics is explored.
Bioanalytical Technologies for Safety Control of Fish and Seafood by Sensitive Rapid Tests for Phycotoxins
Authors: Eremin S A , Zherdev A V , Tokeshi M , Hibara A 
Published: February 2022

AbstractWide and operate safety monitoring of foodstuffs is highly demanded in modern society. This work aims to develop and characterize new test systems for control of phycotoxins, dangerous contaminants of fish and seafood. For rapid and productive testing, 2 methods have been implemented: immunochromatographic assay and fluorescence polarization immunoassay. Various approaches for reducing the limit of detection of target analytes have been considered, including changes in the use of optical and fluorescent labels and varied order of the detected complexes formation. Antibodies and aptamers have been considered as receptor molecules. The developed techniques provide rapid (20–30 minutes, including sample preparation) and sensitive testing. Their effectiveness has been shown for different kinds of fish and seafood. Portable detectors have been proposed that allow testing directly at the sampling points, without transportation to centralized laboratories.
Modern Trends in the Architectural and Planning Organization of Rehabilitation Centers for People with Pathology of the Musculoskeletal System
Authors: Zhdanova I V , Potienko N D , Kuznetsova A A 
Published: February 2022

Abstract
The purpose of the article is to reveal modern directions of architectural and planning organization of rehabilitation centers for people with locomotor apparatus pathology. The research is based on the study of world experience in the design and construction of rehabilitation centers in order to identify the functional composition of the premises and the planning organization. The attention is focused on the demand for the mentioned objects. The conclusion about the necessity of complex approach with attention to landscape organization and socialization is made which will increase comfort and quality of medical services. The results of the study have been tested in an experimental project of the rehabilitation center in Samara. As a result of the study the necessity of building such facilities in Russia is emphasized. The experience of foreign countries needs adaptation to Russian conditions.
Conduction of a Laboratory Experiment with the Goal of Researching Submerged Flow Peculiarities
Authors: Kildibaeva S R , Gimaltdinov I K , Kharisov E I 
Published: February 2022

Abstract
In connection with the decreasing hydrocarbon reserves on land, the interest of researchers in new alternative methods of hydrocarbon production is growing. One of the actively developing areas is the production of hydrocarbons from deep-water deposits, in connection with which the share of developed deposits in the water area of the World Ocean is growing every year. However, this production method is not completely safe, since any damage to the production structure can lead to leakage of hydrocarbons. In this case, hydrocarbons are distributed in the form of a submerged jet. Predicting the behavior of submerged jets, calculating their trajectories and thermophysical parameters is important in the elimination of leakage. The article discusses an experimental study of a submerged jet. The results of the experiment will make it possible to verify the mathematical model describing the propagation of a submerged jet. The experiment was carried out to study the trajectory of the jet and its temperature. This paper presents the results on the analysis of the jet trajectory. In the experiment, gasoline or diesel fuel was used as a liquid, air was used as a gas. The work shows a diagram of the experimental setup, describes the process of the experiment, and also shows a photograph of the experiment and a comparison with the results of calculations.
Mathematical Description of Dynamic Processes Occurring in Rolling Bearings Used in Oil-And-Gas Sector Rotor Machines as the Basis for Their Vibration-Based Diagnostics
Authors: Velichko E I , Inozemtsev D A , Muzykantova A V , Stepanov M S 
Published: February 2022

Abstract
The rolling bearings used in modern rotor machines in the oil-and-gas sector are seen as crucial components. The accuracy of their production complies with the highest operational requirements. However, bearings are also the most probable cause of rotor machine failures. This can be attributed to the friction in support assemblies.
This article considers the mathematical dependencies reflecting the dynamic processes occurring in rolling bearing during operation. It will help construct a modern test-range model for vibration-based diagnostics of bearing systems. The experiments with the practical use of this model showed a fault detection accuracy of 82-84%, which is a very good result.
On Food Security of the Northern and Arctic Regions of Russia (Using the Example of the Republic of Sakha (Yakutia)
Authors: Rodnina N V 
Published: February 2022

Abstract
The food security of a country or region is the main focus of agrarian policy and the specific characteristics of agricultural production explain the increased attention of most countries to the agrarian sector of the economy. From the perspective of the northern and Arctic regions with complex climatic conditions, food security is a complex multifactorial problem and consists of domestic opportunities for agricultural production and the import of food from other regions and even countries.
Regions with low agricultural potential are characterized by problems such as small volumes of local food production and the lack of a competitive market, the high cost of goods sold and non-compliance with medical nutrition standards. Most such regions are characterized by long distances, the complexity of the terrain (lakes, rivers) and the lack of transport infrastructure. In this regard, vital food is imported using the so-called “northern delivery” system.
The purpose of the study was to identify the problems of the food supply system of the northern and Arctic regions and to develop proposals for changing the negative situation.
The object of the study was economic and organizational approaches to the food supply of the population of hard-to-reach regions.
Research methods: comparative and economic analysis, statistical.
The following tasks are solved:
- characterize key indicators of regional food security;
- analyse the state of food security in the northern and Arctic regions;
- identify problems and propose solutions at the national (state) and local levels. The purpose of the study was to identify the problems of the food supply system of the northern and Arctic regions and to develop proposals for changing the negative situation. The scientific novelty of the study lies in the proposals developed by the author on the main directions of state policy in the field of food supply in the northern and Arctic regions.
Improving the Efficiency of Sewage Treatment Plants on the Example of Treatment Plants in the Cities of Artem and Vladivostok
Authors: Volkova V N , Kundenok S V , Golovin V L 
Published: February 2022

Abstract
Fugate water, when it enters the beginning of sewage treatment plants (STP), increases the load on the biological treatment system. Methods of purification of the STP return water are considered. A new composite composition has been developed for the reagent precipitation of ammonium and phosphates from water, which is formed as a result of thickening and dewatering of sludge. On the basis of the experimental data obtained, a technological scheme for the treatment of water formed after mechanical dewatering of excess activated sludge and sludge from the operation of treatment plants at biological wastewater treatment plants has been developed. The developed technological solution makes it possible to exclude the effect of aluminum on activated sludge and minimize the negative effect of ammonium and phosphates, with minimal construction and operating costs. The proposed cleaning method is applicable to both existing treatment facilities and newly designed ones.
Sources of Ingress and Distribution of Marine Litter Along the Coast of Primorsky Krai
Authors: Okhotkina V E , Blinovskaya Ya Yu , Vysotskaya M V , Chernysh O G 
Published: February 2022

Abstract
The World Ocean pollution with production and consumption waste is one of the hottest global environmental problems of today. The term “marine litter” has already become firmly established in the scientific use, and in both Russian and world research literature it is defined as any manufactured or processed material, directly or indirectly, intentionally or unintentionally left in the marine environment. It is plastics and its elements that account for a considerable share of marine litter. Research on the pollution of the beaches of Primorsky Krai. with marine litter been carried out since 2007 to the present. These were first conducted on the shores of the Amursky and Ussuriysky bays (Japan sea) and were timed to coincide with the International Coastal Cleanup (ICC) action to clean up the shoreline from marine litter. Over the period of from 2007 to 2021, more than 160 studies were carried out at 74 locations along the Primorsky Krai coast. The findings from the monitoring have revealed 85 per cent of waste found the Primorsky Krai coastal-marine areas have been formed through recreational activities. The analysis of the monitoring results made it possible to work out a number of recommendations to control the situation with Primorsky Krai coastal-marine areas’ pollution with marine litter.
On the Issue of Technical Re-Equipment of Production Bases of Track Machine Stations of JSC “Russian Railways”
Authors: Skripachev I F , Klementov A S , Skripacheva N L 
Published: February 2022

Abstract
In the proposed work, based on the analysis of the existing technical equipment of the track machine stations production bases and the prospective volumes of laying and removing the rail-sleeper lattice during track repairs, to be offered ways to solve the required development of the production capacities of the link-assembly, link-disassembly, link-repair bases of the track machine stations.
Pressure Drop and Particle Collection Efficiency of Multivortex Separator
Authors: Madyshev I N , Kharkov V V , Bolotnov V G , Dmitriev A V 
Published: February 2022

Abstract
The purification of gas emissions from dispersed particles is presently one of the mandatory measures to protect the air basin for most industrial enterprises. The authors developed a device for gas cleaning with separation elements in the form of a profile with rectangular vertical slots. Such a design creates numerous small vortices, which leads to an increase in collection efficiency. The paper aims to numerically determine the effect of the design and operating conditions on the particle deposition efficiency and the pressure drop of the multivortex separator. The height of the rectangular slots varied from 55 to 94 mm. In addition, the size of the dispersed particles changed from 1 to 15 μm in diameter. The results show that a decrease of resistance coefficient is observed with an increase in the height of the rectangular slot in the separation element. The results indicate that separation elements should be designed with a small height of rectangular slots and located in the lower part to collect fine particles in the multivortex separator efficiently.
Visual Landscape Analysis of the Territory of the Squares of the City of Orel and Assessment of the Dynamics of Urban Ecosystems According to the State of Woody Vegetation
Authors: Zolotareva E V , Korenkova E A 
Published: February 2022

Abstract
The authors analyzed the territory of the squares in Orel to determine the influence of the types of spatial structures on the features of the functioning of the landscape objects, forecast the stability of the studied landscape and assess the dynamics of urban ecosystems according to the state of woody vegetation. In order to develop a scientifically-based design of sustainable urban ecosystems and to reconstruct urban objects of landscape architecture, a method for analyzing the territory of squares on the selected contours of the types of spatial structures (TSS) is proposed, which allows to identify positive and negative factors that affect the development of design solutions. It is found that for the majority of squares whose age of plantings is close to the limit in urban conditions, the closed type of spatial structure is typical. As a result of the analysis of the placement and the ratio of the types of spatial structures for a comprehensive assessment of territories, it was found that the closed type of spatial structure caused a decrease not only in the attractiveness, but also in the sanitary and hygienic role of landscape architecture objects. The most favorable conditions for the sustainable functioning of tree stands in urban squares are semi-open and open spaces.
Visions of the Future of Post-Industrial and Post-Pandemic Housing Architecture
Authors: Klochko A R 
Published: February 2022

Abstract
The article is devoted to the visions and problems of the future of post-industrial and post-pandemic housing architecture. Architecture always strives for society and trends in it, sometimes anticipating, sometimes lagging behind in its expressions. Now there is another industrial revolution, which should lead to a transition from an industrial to a post-industrial society. The main directions in the change of modern society affecting the architectural design of the living environment are analyzed. It is also alleged that the pandemic was Covid-19 a catalyst that identified serious gaps in the organization of the residential environment. Outbreaks of viruses have occurred and will occur, especially in megacities. The need for social distancing, restrictions on their stay in their own home called into question the accepted principles of designing a residential environment. In the context of the ongoing global socioeconomic changes, there is an urgent need for prudent modernization of traditional residential design models. Experimental housing architecture is a long tradition of finding new forms of housing, supported by the desire of society to find answers to the challenges of time, where the architect has a significant role. The article considers the recommendations of students of architects of the Moscow State University of Civil Engineering on the design of a residential environment with promising proposals for solving existing housing problems, which they carried out during architectural design.
Epizootic Situation of Brucellosis of Domestic Northern Reindeer in the Republic of Sakha (Yakutia)
Authors: Zakharova O I , Protodyakonova G P 
Published: February 2022

Abstract
Brucellosis is a highly contagious zooanthroponotic disease. Epizootics of brucellosis etiology registered in the regions of Yakutia significantly reduce the efficiency of reindeer husbandry. In most cases, brucellosis in animals manifests itself chronically for several years, which makes it difficult to eliminate this infection in the conditions of reindeer farms and contributes to the formation of persistent, epizootic active foci. Brucellosis has not only social significance, but also serves as a potential barrier to trade (sale and exchange) of animals, products and products of animal origin, and prevents breeding. The article provides data on the epizootic situation of brucellosis in domestic reindeer in the Republic of Sakha (Yakutia). The data on the livestock and research on brucellosis of northern domestic reindeer in Yakutia are presented.
Numerical Study of the Non-Azeotropic Mixture Outflow in Event Accident in the Building Cooling System
Authors: Zherlykina M N , Vorobyeva Yu A , Kononova M S , Yaremenko S A 
Published: February 2022

Abstract
The range of values of the pressure of the refrigerating agent at adiabatic compression of vapors in the compressor, within which the cycle of operation of the cooling machine should be carried out, is graphically represented. The distribution of concentrations of a harmful substance – a refrigerating agent in the volume of a room in the event of depressurization of the building’s cooling supply elements is studied and the most dangerous area for human health and the critical time spent in it are determined. The amount of refrigerating agent in the system is determined depending on the cooling capacity of the outdoor unit and on the length of the freon lines, taking into account the parameters of the outdoor air. An analytical dependence is developed for determining the time of leakage of the refrigerating agent into the volume of the room, depending on the configuration of the air conditioning system and its cooling capacity. Based on the study of changes in the amount of refrigerating agent and the time of its expiration before reaching the maximum permissible concentration in the working area of the room, recommendations are presented for optimizing the parameters for monitoring the content of harmful substances in the room air, depending on the characteristics of the system.
Formulas for Calculating Deformations of Power Line Supports
Authors: Astakhov S V , Kirsanov M N , Vorobyev O V 
Published: February 2022

Abstract
In this work, we investigate the static deformations of the spatial model of a statically determined truss of a power line support. The tetrahedral truss has a pyramidal extension at the base and a cross-shaped lattice. Brackets for attaching the supporting cables are located at the top of the truss. A spherical support hinge, a cylindrical one, and two vertical posts are located at the four corners of the structure base. We consider two types of loads: wind, and force. Horizontal forces applied to the nodes of one face model the wind load. The horizontal force is applied to the top of the structure. We aim to derive formulas for the dependence of the deflections of the truss on the number of its panels. We use the Maxwell-Mohr formula to determine the deflection. We find the efforts in the structural elements and the reactions of the supports from the general system of linear equations of equilibrium of all nodes of the truss. A series of solutions for trusses with different numbers of panels are summarized by the induction method in the Maple computer mathematics system. The sought formulas for the dependence of the vertical deflection of the console and the displacement of the top of the mast on the number of panels were obtained in the form of polynomials in the number of panels of degree not higher than the fourth. Some asymptotics of solutions is found in the work.
Simulating Interaction of Liquid Steel with Gate Wall at Harmonic Motion
Authors: Tsarenko S N , Kostenko A V , Ignatkina E L , Ponamareva E A 
Published: February 2022

Abstract
The problem of determining the forces of interaction of a viscous fluid with the cylindrical pipe wall is considered. It is assumed that near the pipe wall, the fluid motion is completely determined by viscous forces. The pipe moves along the streamline. The annular fluid element motion law is a special case of the Navier–Stokes equation in a cylindrical coordinate system. The equation is solved by the Fourier method in Bessel functions. Considering the orthogonality of the eigenfunctions, an equation for the squared norm is found. As an example, the case is considered when the pipe is subjected to vibration. Equations have been obtained for the velocities and viscous friction forces in the laminar sublayer. It has been found that when the pipe moves harmonically, the velocities and shear stresses at the pipe wall do not reach their maximum synchronously. The distribution of velocities and stresses in the section of the steel-pouring ladle gate channel has been considered for three vibration modes. The solution provided can be, in particular, used to determine the fluid–pipe wall interaction forces when the pipe is technologically affected by vibration, impulse, etc., as well as study moving joints such as piston, plunger, etc.
Design Education. New Approaches in New Conditions
Authors: Stratonova L M , Kvashnina O V , Gilmutdinova E V 
Published: February 2022

Abstract
Everything embraced by the contemporary educational content, requires a high-class professional design. Specialized graphics, infographics, typographics, and pictograms – all new forms of information transfer and educational technologies depend on the design quality. Russia’s university environment always strived to occupy leading positions in applying newest forms of training highly skilled specialists. The objective of the given article is to activate the efforts of the educational society to work out a fundamentally new content of training to make the exchange of knowledge and scientific cooperation on the leading world university platforms efficient and effective. The necessity of searches for efficient mechanisms of implementing projects of the country’s strategic development demonstrates that specialists in high priority lines of design are not simply wanted, they are vitally needed. Efforts should be focused on training specialists in media design, web design, digital image and augmented reality design, motion design, communication technology design, 3D technology design, modeling and moulage design, document design, etc.
Experiments in visual technologies made it possible to formulate main modes and methods of creating a digital educational content. Technologies of motion design made it possible to present the composition fundamentals didactic material in a concise form. This project was worked out by the Chair of Design and History of Art of the Ufa State Petroleum Technological University and appeared unexpendable when the education process became on-line. Such projects were few at the disposal of the teaching staff but particularly these ones were the most effective in the pandemic period.