bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Current State of the Landscaping System of a Large Industrial Center (for Example, the City of Krasnoyarsk)
Authors: Avdeeva E , Kuhar I , Chernikova K 
Published: March 2021

Abstract
An important indicator of the state of comfort of urbanized territories is the provision of city residents with green areas. Green areas of common use include plantings of city-wide and district parks, inter-quarter gardens, squares, boulevards and embankments. Currently Krasnoyarsk is one of the largest centers in Eastern Siberia. Historical and new areas of Krasnoyarsk differ significantly from each other by the nature of landscaping. Protective zones located between residential and industrial areas along highways and railways should make a great contribution to the general greening system of the city. Analysis of the dendrological composition and distribution of species in plantings of the city shows that the main composition of plantations is represented by a limited number of species, among which balsam poplar and ash-leaved maple are unpromising species for plantings of general and limited use. The list of woody plants recommended for landscaping the city, tested in arboretums, plantations of the central part of the city and Akademgorodok, is represented by a fairly large variety, including both local species and species of various botanical and geographical regions. At the same time, an increase in the share of the main forest-forming species in the greening of urban areas, such as drooping birch, Siberian larch, Siberian spruce, their high decorative qualities will allow to more fully solve the problem of forming the individual appearance of a Siberian city. The combination of these rocks with the natural components of the landscape - relief, bodies of water and artificial elements (buildings, engineering structures) - will increase the artistic expression of urban development.
Noise Propagation in Urban Area from Chimneys of Thermal Power Plants
Authors: Gusev V , Ledenev V , Antonov A , Matveeva I 
Published: March 2021

Abstract
Large energy facilities are noise sources of the adjacent to them urban buildings. In case of noise propagation from pipes, the assessment of the noise mode of the urban building area is a complex scientific-practical problem of building physics. The solution of the problem is carried out consistently in two stages. At first, the noise distribution in channels from ventilator to the mouth of the pipe is determined. Proposed calculation model takes into account sizes and shape of channel and pipe, noise insulation properties of the walls and the mirrored-diffuse nature of the sound reflection from the fences. For metal ducts, 95% of reflected sound energy is mirrored, and other 5% of it is diffusely. The distribution of emitted by pipe sound energy within urban building is found at the next stage. A new method is suggested for solution of this problem. It is based on received analytical dependence of the sound energy directivity factor from the mouth of pipe and integration of its diffraction. To implement the method a computer program is developed. The program makes it possible to assess the propagation of noise inside ducts and in an open space from the mouth of the pipe to various sites of buildings. To realize the method, an example of calculation of noise emitted by the chimney of a steam boiler of a thermal power plant in Moscow is given. The example shows the potential of suggested calculation model and its computer realization for the noise mode assessment of the adjacent to energy facilities urban buildings.
High-strength Titanium Bolts Processing for the Manufacture of Fasteners
Authors: Afonina M B , Gurtovaya G V , Ruchina N V 
Published: March 2021

Abstract
This work is devoted to the development of a heat treatment technology in the manufacture process of cold deformed VT16 and VT35 fasteners with the diameter of 16mm or more. This work also investigated the influence of various types of lubricants on the friction coefficient at the “metal-tool” interface during cold deformation operations.
Singularity Point of the Russian Arctic
Authors: Sarvut T O , Tkachev V N 
Published: March 2021

Abstract
In the area of Yamal and Taimyr in the 20th century, a large industrial center developed. At the same time, the Eastern regions of the Arctic and Siberia remained outside the country’s integrated economic system. Only gold and diamond mines work here.
In the 90s, the organizational structure of economic relations disintegrates, and the region finally turns into a raw material appendage of the country — and this is a large part of its territory. Currently, falling interest of Western countries to Russian energy; the tangle of problems, the indicator of which was the Arctic, has generated the second crisis (a sharp in-depth “breakdown" of internal and external communications for pandemic COVID-19), impending disaster, as the natural ending of the impasse singularities, completes the life cycle of any system [1]. The article collects and analyzes information on the current situation in the production of energy resources, the state of transport, the demography of the region, and assesses prospects for its further development and restoration of the integrated mechanisms of the economy.
Modeling of Seismic Resistance of Spatial Larg-span Unique Structures in the Operational Stage
Authors: Razzakov S R 
Published: March 2021

Abstract
The paper presents the results of the research of the stress-strain state of long-span unique spatial and shell constructions, subjected to long-term static and dynamic effects, and performed by using experimental methods of physical modeling obtained on experimental models and full-scale structures.
To ensure the operational safety of buildings and structures, the change in the structural proper-ties of materials from unfavorable climatic conditions of long-term beyond design-basis static loadings dynamic effects of high intensity compliance of bearing diagrams and the presence of local damage to structures was investigated. The evolution of the dynamic parameters of spa-tial and shell constructions during operation is investigated.
Problems of Organizing Year-Round Urban Pedestrian Spaces in Vladivostok
Authors: Babenko A , Gavrilov A , Ogochonova E 
Published: March 2021

Abstract
Vladivostok is notable with significant limitations in arranging pedestrian spaces in the traditional way, namely along highways. Therefore, the most essential task is to develop those pedestrian spaces that connect areas separated by a significant difference in terrain, highways, and railways along the shortest distance. The article discusses the experience of national and foreign design of pedestrian spaces formed independently of city highways and assuring a comfortable traveling for pedestrians under any weather conditions. Studying the experience of using technical means and mechanisms will allow outlining the main ways of the architectural and spatial arrangement of year-round urban pedestrian spaces in the conditions of hostile terrain and monsoon climate.
The Route Selection Method for Natural Gas Pipelines
Authors: Medvedeva O N , Chilikin A Yu 
Published: March 2021

Abstract
The efficient functioning of gas distribution systems requires a feasibility study of rational gas transport circuit solutions and the choice of optimal parameters. The choice of gas pipeline routing has a significant impact on the functioning of the gas distribution system. The optimal solution to this issue will significantly reduce the cost of construction and operation of the gas supply system. This study formulates some provisions for the design of inter-settlement (intercity) gas distribution systems, designed to improve the efficiency of their operation. In this study, the choice of the optimal variant of the gas pipeline route is reduced to identifying such a position of the main pipeline, at which the costs of building and operating the system will be minimal. This task can be solved both analytically and supplemented by graphical methods. The possibility of using the least squares method and Newton’s method for solving problems in the field of gas supply to consumers is shown.
Improving Design of an Energy-Efficient Lighting System Based on Mirrored Hollow Tubular Light Guides According to the Criterion of Its Soundproofing
Authors: Pleshkov S , Bracale Gennaro , Kuznetsov A 
Published: March 2021

Abstract
This scientific work presents results of energy-efficient lighting systems based on mirrored hollow tubular light guides tests when sound waves of various intensities of low-frequency, mid-frequency and high-frequency ranges pass through them. In addition, technological changes in design of natural lighting systems, which were carried out in order to increase their vibration resistance and noise absorption are shown.
Studies have shown high reliability of lighting systems in terms of their soundproofing, especially in mid-frequency and high-frequency ranges, which can significantly reduce harmful effects of noise on human body, leading to fatigue, depletion of brain cells, insomnia, decrease in overall working capacity and human productivity. Conclusions of this work make it possible to further optimize the future prospect of widespread use of energy-efficient lighting systems based on mirrored hollow tubular light guides in construction of residential, administrative and industrial premises.
Application of Calculation Softs to Perform Verification Calculations during the Survey of Monolithic Reinforced Concrete Buildings
Authors: Kolleganov A V , Kolleganov N A , Levshekov S S 
Published: March 2021

Abstract
When performing verification calculations during the survey of building structures, the use of calculation software is limited by the standard algorithm, which does not always allow taking into account the impact of certain pathologies and damages on the bearing capacity and stability of structural elements and objects as a whole. The article offers a variant of using the software package “Lira 9.6” to assess the load-bearing capacity of a building with a monolithic reinforced concrete frame, taking into account the most characteristic pathologies for objects of this type.
Impact of Glass Window to Heat Load in Office Building in Different Climates
Authors: Van Luong Pham , Malyavina E G , Malikova O Y 
Published: March 2021

Abstract
The process of urbanization with the social and economic development in countries, the large and very large building are increasingly serving for administrative, office, commercial, and residential. Nowadays, buildings oriented to meet the aesthetic requirements, also the convenience and fast construction, the covering structure of these buildings is mostly glass. The experiment of heating and cooling loads of reference room has been conducted through the Japanese program for PC Heat load DACCS HkGS (Daikin) with embedded climate data. The raising of thermal load in reference room gets more impact from the values of WWR than the types of glass. In details, the cooling load of reference room increases 35% in Moscow and 40% in Hanoi when raising the WWR. The results show that, the window is a main impact of thermal load of office building with each typical climate. For the window characteristics in the building, the WWR take more impact to the thermal load than the type of glass. Therefore, the using of window into the facade is a major challenger to in the design of high-rise building when balance the aesthetics and energy consumption in the building.
HAZ Structure Formation of Carbonaceous Steel at Impulse Welding
Authors: Moskvitina L V 
Published: March 2021

Abstract
For increase of mining technique capacity at production and restoration wear resistant facings are widely applied. In this work, impacts of impulse welding of an intermediate layer on structural factors and facture toughness of wear resistant surfacing are studied. It, is established, that applying an intermediate layer with periodic impulse «teeth» forms a heterogeneous texture of intermediate layer, causing higher fracture toughness of wear resistant surfacing. It, is shown that defects made by current impulse have promoted a fine-grained structure of HAZ facing and grain-boundary allocation of grainy pearlite.
Biodestruction of Buildings and Constructions and Improvement of Their Longevity and Environmental Friendliness at the Basis of Application of Bio-Resistant Materials
Authors: Svetlov D A , Piksaykina A A , Vildyaeva M V , Piksaykin N V 
Published: March 2021

Abstract
The article discusses the problem of negative biological effects in buildings and structures. The analysis of microflora released from damaged objects is given. Risk groups for the development of diseases caused by microbial biodestructors that are potentially dangerous to humans are given. The biodegradation of residential and public buildings causes a decrease in the level of people’s health, and their disability occurs due to the deterioration of the urban environment. Microbes contained in building structures, in finishing and protective materials, can settle on the skin, enter the bloodstream through the lungs, and also with food into the human body. A number of pathologies that are difficult to cure and life-threatening have arisen recently due to a sharp drop in human immune reactivity.
The object of the study was cement composites, which include port-lance cement, a mixing fluid, a filler, a fine aggregate, and additionally silicon organic compounds. The hypothesis is that the latter in the form of aryl - (aryloxy) silanes, due to their hydrolysis in a humid environment, can become potent biocidal components.
During the research, generally accepted physical-mechanical and biological methods were used. To assess biostability, samples of cement composites were infected with a test by microorganisms from the following set of mycelial fungi: Aspergillus niger van Tieghem, Aspergillus terreus Thom, Aspergillus oryzae (Ahlburg) Cohn, Chaetomium globosum Kunze, Paecilomyces varioti Bainierulicomillumium Penicillium peniciumium Penicomium Thiumllium Penicillium peniciumium, Trichoderma viride Pers. ex Fr.
Tests have shown that silicon organic additives contribute to a significant increase in the biostability and strength of cement composites. Studies have revealed the presence of a correlation of the fungus resistance of building composites with the addition of silanes and their hydraulic activity.
Algorithm for Design of Steel Fiber Concrete Structures
Authors: Talantova K V 
Published: March 2021

Abstract
It is shown that the widespread use of structures made from such building composites as steel fiber concrete (SFC) is constrained due to the lack in regulatory documents of the necessary information on the choice of initial data, possible options for fiber reinforcement and principles of their rational use, features of their calculation and design, as well as the data with SFC properties in accordance with the operational requirements for such structures. During a long period of time since the idea of concrete reinforcement with steel fiber (“iron hair”) emerged at the end of the XIX and the beginning of the XX century, numerous studies have been performed by Russian and foreign scientists, which became the basis for the further development and improvement of building structures with fiber reinforcement. The algorithm for the design of SFC-based structures has been presented, including the peculiarities of the composite nature of the material.
On the Issue of Designing a Suspended Span
Authors: Kuzmenko O A , Chemodurov V T 
Published: March 2021

Abstract
As is known, suspension bridges are much lighter in their total weight than those of other designs. This is their indisputable advantage. It is no coincidence that these bridges are widely used in practice. However, along with the indisputable advantages, they are quite sensitive to wind loads generating bending and torsional oscillations of spans at certain transverse air velocities. If the bridge drag at a transverse airflow can be easily reduced by designing streamlined surfaces, then the bridge span surface stability under the action of bending and torsion forces can only be ensured by properly choosing its cross-sectional profile providing the required inertia moment as a required component of its stiffness.
The Methods of Producing Decorative Samples Using the “Hot Enamel” Technology
Authors: Aslanova E S , Moiseeva E S 
Published: March 2021

Abstract
The article presents the methods of creating decor samples using the technology of hot enamel of a certain color palette based on selected (suitable) materials. These methods allow expanding the artistic and aesthetic ways of obtaining works of applied art and design objects on the basis of color and interior design principles. Taking into account the functional requirements for the design of banquet halls, the interior space was modeled in the program ArchiCad 16 with implementation of decorative samples of hot enamel. The authors developed decorative samples (triptych composition) for decoration the interior space of the institution banquet hall.
Sulphur Concretes of Framework Structure
Authors: Erofeev V , Yausheva L , Bulgakov A 
Published: March 2021

Abstract
From the standpoint of the multi structure theory, the principles of the formation of sulphur concrete composite materials are proved. The regularities of structure formation and the manufacturing technology of frame composites at the levels of micro- and macrostructure are determined. Theoretically and experimentally substantiated the optimal composition of composites for the manufacture of coatings and floors, resistant to exposure to chemical and biological aggressive environments. The influence of the nature and dispersion of the filler, its quantitative content on the structure formation, transparency and durability of sulphur composites is investigated. Active additives for sulphur concrete are proposed, which make it possible to increase their mechanical-and-physical properties, as well as durability under conditions of exposure to chemical aggressive environments and microorganisms. The preparation technology is developed and the mechanical-and-physical properties of the frame structure composites are determined.
Research and Analysis of the State and Development of Woody Plants in The Squares of the City of Krasnoyarsk
Authors: Kuhar I , Avdeeva E 
Published: March 2021

Abstract
The article presents the results of studies in different areas of the city of Krasnoyarsk with different levels of anthropogenic load and different levels of air pollution. An analysis was made of the stability of the development of woody plants in the squares of the city of Krasnoyarsk using the example of birch drooping according to two indicators: the asymmetry coefficient for five parameters of the leaves and the asymmetry value for the area of the leaves. The results of the study showed that technogenic impacts lead to a change in the size and magnitude of the fluctuating asymmetry of the drooping birch leaves. In the area with average extent of pollution decrease in stability of the development, being expressed in increase of values of indicators of asymmetry is noted. The greatest decrease in stability of development is noted in selection with a maximum level of pollution. According to the conducted researches, wood plants react to influence of an urban environment, thus methods of a dendroindikation are a theoretical basis of development of recommendations for an assessment of a condition of an urban environment.
Calculation Features of Wooden-Composite Ribbed Plates with Splices in the Cover
Authors: Labudin B V , Popov E V , Sopilov V V 
Published: March 2021

Abstract
Wood-composite plate-ribbed bend structures with plywood and oriented strand board as covers with splices are considered. An overview of studies devoted to the study and increasing of the efficiency of such structures is presented. The theory of calculation of composite rods by A R Rzhanitsyn is taken for compilind a mathematical model for calculations of the the stress-strain state of these structures, taking into account the splices in the cover and the flexibility of mechanical joints of the covers and ribs. The graphs of the dependence of the maximum tensile stresses in the ribs in the criterion cross section and the maximum vertical displacements from the shear bond stiffness coefficient and the location of the splices in the cover are presented. The values of the coefficients for the engineering calculation of plates, taking into account the decrease in the strength and deformation characteristics of the composite section of panels with splices in the cover, compared to panels without splices in the cover, are proposed. Conclusions and recommendations are formulated based on the results of the research, which can be used in the design of wood-composite plate-ribbed structures.
Urban Planning Function of Architectural Monuments and Their Restoration Experience in the XX-XXI Centuries
Authors: Pryadko I 
Published: March 2021

AbstractIn the article, the author attempts to determine the position of restoration and preservation of architectural monuments in a range of actions aimed at designing architectural environments in contemporary Russian megalopolises. The author has proven that public and private funding of restoration can re-energize cultural heritage assets. They serve as dominant urban elements in present-day megalopolises and boost traveling. The author analyzes features of restoration funding and assesses private investment programmes focused on the restoration of cultural heritage assets. The author has analyzed several cases of the “One ruble for one square meter” programme implemented in the Russian capital and assessed the restoration of cultural heritage assets performed there. The set of methods, employed by the author in his research, includes the retrospective analysis, the comparative historical method, and the general research method of inductive generalization.
The Method of Contrast of Modern Architecture in the Historical Environment of the City
Authors: Pronina T V 
Published: March 2021

Abstract
The process of urban development is irreversible. As you know, this process goes in two directions - along an extensive and intensive path, that is, it affects not only the peripheral zones of the city, but also the established areas, including the historical centers of cities. At the present stage of development of post-industrial society, in the context of the observed shifts in its worldview, there is also a revision of society’s attitude to cultural heritage, including historical architecture. There are more and more cases of aggressive interference of new architectural objects in the historical environment of cities without taking into account its preservation. The purpose of this study is to identify the appropriateness of the applying of the contrast method of a new or built-in architectural form to the existing historical environment, as well as to identify techniques and means of achieving a harmonic contrast effect. The objects of research are new and reconstructed objects of architecture in the context of the historical urban environment.
Additive Technologies in the Production of Products by Hot Isostatic Pressing
Authors: Makarov V S , Molev Y I , Markov A I 
Published: March 2021

Abstract
In metallurgy, the production of castings and parts has undergone revolutionary changes in recent years, associated with the creation and expanding use of additive technologies that can fundamentally improve the quality indicators of manufactured products and production conditions. Hot isostatic pressing technology is a complex process in which a large number of parameters affect the quality of the final product. The complexity of the GUI process lies in many thermal, physical, and mechanical interactions and the influence of a large number of parameters on them. By properly understanding and managing these factors, as well as by using additive technologies, quality materials can be obtained that are not inferior to materials obtained by traditional production methods.