bluuebunny/crossref_metadata_2025_split huggingface dataset:
Development and application of a complex model of titanium diboride plasmosynthesis
Authors: Galevskiy G V , Rudneva V V , Orshanskaya E G , Efimova K A 
Published: August 2020

Abstract
An integrated multifactor mathematical model of plasmosynthesis of titanium diboride was developed. The model includes 3 submodels: “Plasma generation”, “Evaporation of raw materials”, “Boride formation”. The model provides the implementation of multivariate research and engineering calculations of plasma processing technological indicators of various types of titanium-containing raw materials, industrial products and waste. The convergence of the predicted and practical results for various types of raw materials is 10.4-12.9%. In all cases, lower values of practical data are noted in comparison with the calculated ones, which is due to the influence of non-isothermal heat carrier gas.
Prediction of carbon dioxide emissions from fuel combustion
Authors: Sterligov V V 
Published: August 2020

Abstract
An objective method for estimating carbon dioxide emissions using specific emissions per 1 kJ of fuel energy is presented. To unify the calculations of the calorific value of gaseous and solid fuels, it is proposed to use a regression calculation model for both coal and gas. The applicability of this approach is proved and on its basis the calculation of possible CO2 emissions at a given unit power.
Mathematical modeling of the process of carbon bubbles formation in the interaction of a gas jet and a melt bath in the oxygen converter
Authors: Solonenko V V , Protopopov E V , Sarychev V D , Granovskii A Yu , Temlyantsev M V 
Published: August 2020

Abstract
The article discusses the issues of modeling the processes of interaction of gas jets and metal melt during blowing of a converter bath. The authors developed and implemented using the finite element method a mathematical model based on a direct numerical solution of the Navier-Stokes equation without using a turbulence model. This model helped to study the dynamics of the velocity field and the boundary of the penetration of the jet into the metal. According to the results of mathematical modeling, a mechanism for the formation of carbon monoxide bubbles is suggested.
Thermocyclic deformation, annealing, and physical properties of low-carbon steel 10
Authors: Prudnikov A N , Prudnikov V A , Fastykovskii A R , Umansky A A 
Published: August 2020

Abstract
The results of the influence of thermocyclic forging and annealing in the range of 100 ÷ 900 °C on the microstructure, coercive force and linear expansion of steel 10. Hot cyclic forging was carried out on slabs 900×700×500 mm in size on the hydraulic press with a force of 20 MN under industrial conditions of ZSMK OJSC (Novokuznetsk). Subsequently, the billets were rolled on a 3 mm thick sheet at OAO NMZ (Novosibirsk). The use of preliminary thermocyclic deformation increases the coercive force by no more than 8%. The possibility of reducing the coercive force of sheet steel made using thermocyclic forging was shown to be almost 3 times lower than the initial untreated state due to subsequent annealing at 900 °C for 10 hours. In addition, this annealing mode reduces the average linear expansion temperature coefficient of sheet steel by 6% in the temperature range of the test 50-450 °C.
Use of waste sludges from chemical enterprises as secondary metallurgical raw materials
Authors: Krivosheev S V , Gordievskiy O I , Nozdrin I V , Garaev R G 
Published: August 2020

Abstract
The characteristics of dump zinc-containing sludges from chemical enterprises producing artificial fibers are given. The analysis of quantitative, chemical and phase compositions of sludge fields is carried out. The possibility of pyro- and gyrometallurgical processing of these materials was established. The need for preliminary preparation of sludge for processing is shown. Technological recommendations for obtaining marketable sulfate and zinc oxide are formulated.
Mathematical modeling of radiant heat transfer in the melting furnace working space
Authors: Shvydkii V S , Lavrov V V , Devyatykh E A 
Published: August 2020

Abstract
The paper provides mathematical modelling results of radiation flow formation in the work space of the smelting (glassmaking, open-hearth) furnace with different heating patterns and flow distribution over the surface of the bath and enclosing structures. A significant influence of the flame length upon technical and economic parameters of furnace operation was found out.
Resource and energy saving technology for producing high-quality steel castings with heat-time treatment
Authors: Lubyanoy D A , Mamedov R O , Knyazev S V , Sokolov B M , Oznobikhina N V 
Published: August 2020

Abstract
Today, the current direction in the development of steel production is resource and energy saving. So, one of the problematic issues in the steelmaking process is to reduce the consumption of ferroalloys. The possibility of improving the quality of castings, due to the heat-time treatment of the melt is considered. The melt is overheated to high temperatures by holding in the furnace. Because of that, the yield of suitable products increases, the metal consumption of products decreases.
Hardness of low-alloy steel obtained by cold metal transfer in the magnetic field
Authors: Shlyarov V , Zagulyaev D , Chen X , Gromov V 
Published: August 2020

Abstract
In recent years, the technology of creating metal materials by the Cold Metal Transfer method has been actively developed, which helps to obtain products of various shapes and sizes. The hardness of 9CrMoV-N low-alloy steel obtained by the Cold Metal Transfer method in the field of a permanent magnet was investigated. The magnetic field induction did not change in the entire series of tests and was equal to 200 mT. As a result of the studies, it was found that the hardness of the obtained sample is more than 2 times higher than the hardness of the starting material and is 590.97±14.87 HV in comparison with the hardness of the wire before surfacing 265 HV. It was found that the distribution of hardness over the volume of the material is heterogeneous and depends on the place of testing. It was suggested that changes in hardness are associated with the structural features of the deposited material.
Development of ecotourism infrastructure at protected areas of Primorsky Krai
Authors: Maslovskaia Oksana , Kopeva Alla , Petrova Ekaterina , Ivanova Olga , Khrapko Olga 
Published: August 2020

Abstract
The paper discusses the features of the formation of ecotourism infrastructure in specially protected natural areas (PAs) of the Primorsky Krai. The need for the research is due to the lack of basic strategies for the development of Primorsky Krai protected areas, the lack of developed route programs for various categories of visitors and weak infrastructure of ecological routes at protected territories of the Primorsky Krai. Research method: a comparative analysis of the landscape structure of protected areas in the Primorsky Krai and the world. As a result of the study, the location and boundaries of nature reserves, recreational territories, economic zones in each of the functional zoning schemes of the two protected territories “Leopard Land” and “Call of the Tiger” were identified and depicted. Nodal points of the considered landscapes located in tourist centers and nearby villages are highlighted. As a result of the study, it was concluded that the infrastructure for nature tourism should be a subject to the principles of sustainable development of territories, minimize the negative impact on nature and increase the safety and comfort of tourists.
Perspectives for using a three-beam space-planning structure in creating residential grid structure development
Authors: Nureev Tagir , Popov Anton 
Published: August 2020

Abstract

Problem statement. The aim of the study is to reveal new urban planning possibilities in applying the three-beam architectural and planning structure under the changed sanitary regulations and standards (SanPiN 2017) in the central and southern zones of insolation in the Russian Federation.

Results. The main results of the study consist in the development of proposals for the central and southern zones of insolation in the Russian Federation, which allow achieving the maximum normative indicators of the building area density.

Conclusion. The significance of the results obtained for architecture is the geographical boundaries defined by the authors for the use of residential three-beam space-planning structure in modern conditions of housing development. The research is based on the analysis of urban planning indicators, including renovation of existing building area, and the typology on the basis of the rotation angles of the three sectors in different azimuth directions.
Features of modern methods of forming embankments
Authors: Kuleeva Lalya , Burova Tatyana , Listovskaya Ludmila , Ibragimova Ainaz , Saifullina Ilseyar 
Published: August 2020

Abstract
This article analyzes the functional urban development of embankments, identifies features used in the creation of recreational forms along, and offers suggestions as to functional planning organization.
Results. The main result of the study is to identify the primary methods of organizing embankments. Modern practice, characterized by the use of new technologies and materials, attracts people with their aesthetics and unique possibilities for spending time on the embankments.
Findings. Significant results were obtained for the design process in determining characteristics of organization along the embankment zone and integration into the urban environment. A variety of opportunities for the organization of the environment were being considered to create a comfortable atmosphere. Such factors as transport accessibility and safety of pedestrians, functional location of objects, proper arrangement of lighting and landing systems, creation of a unified environment throughout the area while maintaining natural and ecological balance are taken into account.
Creation of an architectural space in oncological rehabilitation centers
Authors: Gaiduk Albina 
Published: August 2020

AbstractIn the modern world, individual space features in architectural design are becoming a priority. A crucial task is the creation of clinical rehabilitation centers (CRCR), capable of providing high value care to oncological diseased (OD) children in remission [1]. According to the Ministry of Health of the Russian Federation for the last period, the disease incidence of children and adolescents with oncology diseases is 15 cases per 100,000 children. Over the past decade, the number of OD children, registered annually, has increased by 12 %. According to the State Statistics Committee data, published in 2019 in the Russian Federation, about 4,000 new cases of malignant neoplasms in children are registered. The study found the emergence of qualitatively new structural units in medical institutions, the activities of which are aimed at the partial rehabilitation of oncological diseased children [2, 3]. The absence of a complex approach in the rehabilitation of oncological diseased children is also noted.
Structural transformation of small cities
Authors: Arsenteva Yulia , Zaletova Elena , Ismagilova Svetlana 
Published: August 2020

Abstract
One of the key problems in urban planning is the present-day development of small cities experiencing negative consequences of new socio-economic reality. The need for searching the ways to raise the investment attractiveness of small cities becomes obvious as also the need to revise the goals of their planning structure development. On the example of Chistopol city possible ways of structural transformation, aimed at both preservation of small city natural attractiveness and opening up new opportunities for its urban development, are considered. One of the crucial goals of the research is to reveal the effective methods of small cities’ central part spatial transformation directed on satisfying new social needs of residents while maintaining the valuable historical heritage. As a result of comprehensive assessment of the current state of city’s central part spatial organization, its characteristic features are revealed and new city center formation model is proposed, which structural and functional organization is more complex and emphasizing the idea of creating high quality urban environment.
Principles of organizing new residential development in the peripheral areas of the single-industry towns of the middle Volga
Authors: Shaimardanova Camilla , Prokofiev Evgeny 
Published: August 2020

Abstract
The article discusses current problems and trends in the residential development in the peripheral territories of single-industry towns in Russia. Based on international research, a comparative analysis of the periphery state of cities in Europe, the United States and Asia is presented. An architectural and urban planning analysis of the territories of five single-industry towns in the middle Volga region of the Russian Federation was carried out in order to identify territories suitable for the organization of a residential environment. Based on the research carried out, the principles of organizing the spatial environment of the peripheral zones of single-industry towns in Russia are defined and formulated. The proposed methods of forming architectural and urban planning space can form the basis of urban planning activities at the stage of development of master plans, as well as become the basis for the formation of a new comfortable living environment.
Architecture of innovative educational spaces of a university campus. On the example of SYSTEMS Centre of Engineering Systems in Construction at KSUAE (Kazan, Russia)
Authors: Akhtiamov Ilnar , Akhtiamova Rezeda 
Published: August 2020

Abstract
University campuses in Russia require updating educational methods, modernizing buildings and territories, improving the material and technical base. Transformations should take place in accordance with the latest trends in the design of educational spaces. The article proposes an integrated approach in the design of innovative educational spaces, guided by the basic principles: openness and connectedness; multifunctionality and transformability; harmony. This method was used in the design and implementation of the modernization project of the Center for Engineering Systems in the construction of Kazan State University of Architecture and Engineering. The successful launch and operation of the center confirms the relevance of the method used.
Testing the methods of reconstruction of the spatial solution of the pedestrian street
Authors: Grishina Maria 
Published: August 2020

Abstract
This article describes techniques for designing a pedestrian city street in an existing building. At the beginning of this article, methods are described that determine the level of elaboration of the modernization of a city street into a pedestrian. Also publications on research into the problems of modern urban spaces are mentioned. Then the results of the analysis and the concept of the design solution are presented in the article. At the end, the assessment of the developed design solution is given. In conclusion, the results of adapting existing methods for designing urban improvement for modern engineering technologies are presented. As a result of the development of a design solution, wastelands were excluded from urban space and the promising urban development value of the territory as a whole was increased.
Analysis of the efficiency of obtaining reliable data when operating with number sets in simulation of bridges structural components
Authors: Maystrenko Igor , Zinnurov Tagir , Erohin Dmitriy , Maystrenko Tatiana 
Published: August 2020

Abstract
The issue of reducing the complexity of a multifactorial simulation experiment to an acceptable level is relevant. The simulation complexity is characterized by the computing capabilities of a PC while maintaining a given level of accuracy and certainty of the problem being solved. Many authors neglect the justification of the sample size, thereby reducing the experiment’s reliability. Loads are stochastic, therefore, in the calculations, they are determined by rated and design values. However, the Monte Carlo methods allow the specific realization of loads based on the distribution law chosen. Techniques for optimizing the multifactorial simulation experiment procedures have been proposed on a test example of adding permanent loads due to the bridge pavement layers. They allow excluding the procedure of building multidimensional laws of the final distribution of random parameters, while sequentially transforming them from input to output values. The minimum required simulation experiment size, which should exceed 7.5 106 realizations and is determined by the product of the number of tests N by the number of runs n, has been experimentally justified for the structural components of bridges.
Structures of steel-reinforced concrete beams of bench manufacture for bridge spans
Authors: Eremeev Valery , Shmelev Gennady , Eremeev Pavel , Eremeev Daniil 
Published: August 2020

Abstract
The issue of optimizing the span structure of road bridges is considered. The proposed method is excluding reinforced concrete from stretched zones and replacing it with steel. The combined work of reinforced concrete in a compressed zone and steel in a stretched zone makes it possible to achieve the most rational solution in terms of material consumption, but leads to additional costs. The article describes the history and experience of using steel-reinforced concrete beams with the span length varying from 12 to 33 m. The advantages of the proposed structure over the typical design of non-diaphragm beam spans are confirmed. Comparison of typical and proposed cross sections of span structures is given. Advanced design of steel-reinforced concrete beams was developed, excluding monolithic seam on concrete slab, which simplifies installation and reduces the complexity of spans. Design solutions are verified by patents of the Russian Federation. Photos of steel-reinforced concrete beams and bridge structures are provided-both built and under construction.
Energy method for calculating insolation of residential apartments
Authors: Kupriyanov Valery , Sedova Farida 
Published: August 2020

Abstract
The analysis of the current codes for the insolation in apartments has been done by the authors. It is shown that the insolation assessment during exposure is not sufficiently correct. The current codes do not take into account the amount of solar energy, the transmittance of UV radiation with double-glazed windows, the dimensions of light openings and the room parameters. The current codes for insolation do not contain requirements for the essential level of sanitation.
The proposed energy method of calculating insolation corrects the shortcomings of the existing Sanitary Codes method considering the climatic and structural factors. It introduces an unambiguous quantitative measure of insolation-the dose of UV radiation as well, which provides a given level of bactericidal efficiency of room sanitation.
Additionally a proposal to specify the bactericidal efficacy level of irradiation based on the most common microorganisms in living rooms (Staphylococcus aureus and Escherichia coli) has been made.
An example of the UV radiation dose calculation in rooms is given, which provides a necessary level of bactericidal efficiency.
New nodal connection of thin-walled cold formed profiles with a trapezoidal wall using separate welded bushings
Authors: Kuznetsov Ivan , Gainetdinov Rishat 
Published: August 2020

Abstract
The article suggests a new constructive solution of the node made of thin-walled cold-formed profiles with a part of concave flat wall with the use of separate welded bushings for bolt arrangement. To assess the load-carrying capacity of the proposed node numerical and experimental study of a prototype model, consisting of thin-walled cold-formed profiles connected by a gusset plate with a bolt, using separate welded bushings was fulfilled. By results of researches character of pressure distribution in places of bolts installation is revealed and actual carrying capacity of new node is defined. The significance of the obtained research results for the construction industry lies in the fact that the new design solution of the node with the use of separate welded bushings makes it possible to eliminate the gap between the gusset plate and trapezoidal wall of the profile, thus performing the bolt fastening in this place and improving the actual work of the node. It should be noted that the proposed solution of connection with the use of separate welded bushings allows increasing the carrying capacity of the node, taking into account the installation of bolts in the concave part of the profile wall.
Dynamic stability of viscoelastic orthotropic shells with concentrated mass
Authors: Khodzhaev Dadakhan , Vatin Nikolay , Abdikarimov Rustamkhan , Normuminov Bakhodir , Mirzaev Bakhadir 
Published: August 2020

Abstract
Viscoelastic thin-walled structures such as plates, panels and shells, with mounted objects in the form of additional masses are widely used in modern technology. The role of such additional masses is often played by longitudinal and transverse ribs, tie-plates and fixtures. When designing such structures, it is relevant to study their dynamic behavior depending on the mass distribution, viscoelastic and inhomogeneous properties of the material, etc. In this paper, the dynamic stability of a viscoelastic shell carrying concentrated masses is considered, taking into account the nonlinear and inhomogeneous properties of the material. A mathematical model of the problem is described by a system of integro-differential equations in partial derivatives. With the Bubnov-Galerkin method, the problem is reduced to solving a system of ordinary nonlinear integro-differential equations. To solve the resulting system with the Koltunov-Rzhanitsyn singular kernel, a numerical method based on the use of quadrature formulas is applied. The effect of the viscoelastic and inhomogeneous properties of the shell material, location, and the amount of concentrated masses on stability is studied.
On the stress state of thin-walled isotropic building constructions of the shell type
Authors: Timergaliev Samat , Uglov Aleksandr 
Published: August 2020

Abstract
The stress-strain state of elastic inhomogeneous isotropic shallow thin-walled shell constructions is studied in the framework of S.P. Timoshenko shear model. The stress-strain state of shell constructions is described by a system of the five equilibrium equations and by the five static boundary conditions with respect to generalized displacements. Equilibrium equations are second-order partial differential equations that are linear with respect to tangential displacements, rotation angles, and non-linear with respect to normal displacement (deflection). The aim of the work is to find generalized displacements from a system of equilibrium equations that satisfy given static boundary conditions. The research is based on integral representations for generalized displacements containing arbitrary holomorphic functions. Holomorphic functions are found so that the generalized displacements should satisfy five static boundary conditions. The integral representations constructed in this way allow to obtain a nonlinear operator equation with respect to the deflection. The solvability of the nonlinear equation with respect to deflection is established with the use of contraction mappings principle.