bluuebunny/crossref_metadata_2025_split huggingface dataset:
Items and proposals related to the suburban area-planning within the big city sphere of influence
Authors: Pankeieva A , Viatkin K , Zavalniy O 
Published: November 2020

Abstract
The paper is dedicated to the major aspects of formation and functioning of the suburban areas within the big city sphere of influence. A set of questions was determined to be studied, in particular, definition of essence of the concept of “suburban area”, definitions of suburban area. The new trend of territorial development is the processes of population decentering from the central districts per city, which is related to the factors of development of the objects of social and economic support of the population, as well as a number of environmental problems. The paper proposes a model of suburban area territory planning within the big city sphere of influence, which allows managing and using territories of suburban area a more efficient way.
Industrial architecture of the Russian Far East in the context of the activities of the first architects and engineers
Authors: Bazilevich M E 
Published: November 2020

Abstract
This article deals with professional activities of the Far Eastern architects and engineers of the second half of the 19th – beginning of the 20th century, who worked in the region on the construction of industrial facilities for various purposes. Brief information about a number of specialists of various profiles working in the region is presented. The article considers the importance of the professional activities of local architects and engineers in the development of the mining industry, electrification and architecture of factory enterprises in the Far East of Russia. Here some features of the industrial architecture of the Far East, which depended on the specifics of the development of the region and its individual cities, are revealed.
Accessible environment as a means of ensuring the rights of persons with disabilities and as a task of the modern social state
Authors: Kurbatova S M , Aisner L Yu , Naumkina V V 
Published: November 2020

Abstract
The article deals with a number of issues related to the essence of the modern social state, its responsibilities to ensure the ability of the entire population, including people with special needs, to exercise their rights, participate in the life of society and the state. The importance of an accessible environment for ensuring the rights of persons with disabilities is noted. The role of urbanism in this process is shown. The concept and essence of urbanism are given, and a new task of urbanism to provide an accessible environment for residents with disabilities is revealed. The types of urbanism and the features of their implementation, specifically in the concept of a new task to create an accessible environment for people with disabilities, are considered. The conclusion about the formation of a new essence of urbanism as an institution of the social state and one of the means of realizing the rights of persons with limited abilities, including access to justice, is made.
Formation of comfortable urban environment in Russia based on international experience
Authors: Shleenko A V , Volkova S N , Sivak E E 
Published: November 2020

Abstract
In this paper we consider the formation of such an indicator of the urban environment as comfort. The aim of the study is to identify factors affecting this indicator and to draw up possible development paths in the conditions of our country. The main method used to study this topic is the analysis of received information on carrying out activities in foreign countries. As a result, it has been concluded that some projects can be implemented in Russia, but this topic requires more detailed study, as well as the development and implementation of a large number of projects in order to create a truly comfortable urban environment.
Environmental and economic assessment of the impact of oil and gas production on the state of landscape and botanical complexes in the Urals
Authors: Anhalt E.M. , Dobrodomova L.A. , Ryabinina Z.N. 
Published: November 2020

Abstract
The article presents the results of environmental and economic assessment of the impact of oil and gas industry objects on the state of landscape and botanical complexes in the Urals. Using the example of two oil and gas fields, the complex impact of the construction and operation of this type of facility is shown. The greatest disturbances to the land are caused by the construction and operation of industrial sites for integrated gas treatment plants and gas distribution networks, wells and service pipelines, crane assemblies and piston start-up and intake assemblies. Despite the fact that according to the point system, the impact of the enterprise on biocenoses is assessed as “weak negative,” the impact of oil and gas production facilities has led to a significant change in landscape and botanical complexes. In addition to changing the geochemical state of landscapes and the redistribution of natural geochemical cycles, a change in the ecological structure of species of edificators, a change in their physiological and morphological functions has been established. This impact directly affects the state of forest ecosystems, water conservation, water regulation, and absorption functions of the forest. Economic damage from the operation of oil and gas production facilities is 137042, 00 rubles.
Approach to substantiation of rational decisions on protection of fuel and energy complex objects to the impact of emergency explosions
Authors: Rybakov A V , Ivanov E V 
Published: November 2020

Abstract
The article presents in a formalized form the formulation of the problem of finding rational values of the parameters of the basic elements that make up the object of protection and external protection systems of the object (fuel and energy complex) from the impact of an air blast wave. A scientific and methodological apparatus for solving the problem of increasing the security of objects to the impact of an air blast wave in the conditions of restrictions on the parameters of the protection system and resources for the implementation of these measures is formulated. The proposed methodology is based on the security indicator, which makes it possible to interconnect both the intrinsic characteristics of the object and the most probable parameters of the damaging air blast waves. The solution to the optimization problem of delivering the values of the security indicator to the maximum is carried out using the gradient method. The rational parameters of the protection system obtained on the basis of the described approach will make it possible to plan measures to protect the objects of the fuel and energy complex against the impact of emergency explosions in conditions of restrictions on the cost of their implementation.
Project concepts for combined fire-extinguishing systems
Authors: Bukeikhanov N R , Gvozdkova S I , Butrimova E V 
Published: November 2020

Abstract
Based on the analysis of the functioning of the sprinkler fire-extinguishing system and the chemical reaction of the interaction of ammonia with water, the article considers the formation of an integrated fire extinguishing system to ensure the safety of processes and production plants where ammonia is used in the main and auxiliary processes. Analysis of the functioning of the system allows creating a project for a unified combined fire-extinguishing system based on an automatic sprinkler system and including the function of reacting and responding to the presence of ammonia vapors in the air of the production rooms. The paper proposes a supplement by the method of aggregation of automatic sprinkler systems with ammonia sensors, which, while maintaining the basic fire extinguishing function, can suppress emergency ammonia releases. As an example, the paper describes the formation of the project of a combined automatic sprinkler fire-extinguishing system with ammonia sensors and implements an additional function to ensure production safety in case of a possible ammonia emergency release.
Analysis of sources of dust and poisonal gases in the atmosphere formed as a result of explosions at quarries of the mining and integrated works
Authors: Zvyagintseva A V , Sazonova S A , Kulneva V V 
Published: November 2020

Abstract
In the process of developing a mineral deposit into the open pit atmosphere, dust and toxic gases are emitted from a number of sources. The intensity of such emissions depends on the properties and condition of the rock, weather conditions, engineering and development technology, the effectiveness of the application of methods for suppressing dust and harmful gases. In this regard, dust and gas contamination in the workplace can vary widely and have a negative impact on humans and the environment. The aim of the work is to analyze the processes of dust formation during blasting operations at the quarry of the mining and integrated works (for example, OAO Mikhailovsky in the city of Zheleznogorsk, Kursk Region). During mass explosions at the quarry of the mining and integrated works, the sources of dust and gas emissions were investigated, and a qualitative and quantitative assessment of their components was given.
The forecast of changes in the natural and technogenic conditions of the built-up territory on the example of the “Northern” district of the city of Kursk
Authors: Melkumov D N , Pogoreltseva E I , Khaustov V V 
Published: November 2020

Abstract
Today, the impact of urbanized territories on the geological and hydrogeological environment is of paramount importance. The studied section of the city of Kursk “Severny” district is intensively built up, therefore, it is characterized by a high degree of technogenic impact.. This article presents the results of engineering and geological surveys on the built-up territory of the Kursk city agglomeration. A hydroisogypsum map was built, the flow filtration rate was calculated, and it’s direction was determined. Protective measures were also proposed to prevent flooding of the built-up area. Statistical processing of the primary material was performed, followed by modeling of hydrogeological conditions in the software package ArcGis, Autocad..
Methodology for comprehensive assessment of atmospheric air state in populated areas
Authors: Ignatyev A V 
Published: November 2020

Abstract
The article describes the development of a methodology for a comprehensive assessment of the main sources of pollution and factors affecting the state of atmospheric air in populated areas. Its main distinguishing feature is that it takes under consideration the type of development of the selected area when assessing the impact of vehicles. Another important feature is the consideration of the estimated impact of new construction facilities, demolition of buildings and structures on populated areas, as well as the impact of unfavorable (dusty) areas as air pollution sources. The application of the proposed methodology makes it possible to conduct a comprehensive assessment of the main pollution sources and factors affecting the state of atmospheric air in the populated areas and categorize the city territory for making decisions on the possibility of locating new construction facilities in the urban area.
Devising an integrated procedure for assessing fragmentation effects
Authors: Yasyreva A N , Poluyan L V , Guryev E S 
Published: November 2020

Abstract
The paper presents a comparative analysis of Russian and foreign investigations in fragmentation effects and methods for assessing parameters of fragments formed by explosions of the equipment used for storing hazardous substances. Based on the results of the analysis, a conclusion was made as to the necessity of developing an integrated procedure for assessing fragmentation effects. The procedure is to be implemented as an ordered systematized algorithm comprising the analyzed methods for calculating individual parameters of fragments. The procedure devised was tested during the accident at the «Cosmo Oil» petroleum refinery in Japan, on March 11, 2011. Practical relevance of the procedure proposed is justified by the calculation results agreeing with the accident events.
Technological aspects of waste incinerator slag processing
Authors: Kolodezhnaya E V , Shadrunova I V , Garkavi M S 
Published: November 2020

Abstract
Incineration is a modern global trend in the disposal of combustible solid waste. When burning garbage, solid incombustible residues are formed – slags containing aluminum, copper, zinc and lead, in quantities many times higher than the maximum permissible concentrations of these elements in soils. The material composition and morphostructural features of the material were analyzed to determine possible areas of use and ways of utilization of waste incineration plant slags. As a result of microprobe researches forms of finding of ecologically controlled elements in slag are established. Test results of slag concentration by gravitational methods and results of magnetic separation are given. Based on the studies, a basic outline of slag product processing is proposed.
Study of the state of atmospheric air in the vicinity of non-ferrous metallurgy facilities and the power line tower damage
Authors: Begunova L A , Soboleva V G , Filatova E G 
Published: November 2020

Abstract
In the studies of the state of land areas performed using the advanced methods, in images from space, the industrial region around the city of Norilsk can be seen as a blurred spot that occupies an area of more than 900 km2. Among diverse pollutants forming the picture, sulfur and nitrogen compounds, nitrates, sulfates, phenols, industrial dust, and heavy metals have a particular impact. The release of sour gases results in acid rains, which are among the major pollutants forming the whole picture. These substances affect humans, all objects of the environment, and sources of anthropogenic activities including engineering installations of power plant enterprises. The direct impact on the state of metal towers decreases significantly their lifetimes and increases the risk of emergencies. In this paper, the research data on the state of power line towers of different types are provided and the effect of acid precipitation on structures is shown.
Statistically distributed characteristics of wastewater discharged from Kamskiy Kabel, LTD and containing organic phenolic compounds
Authors: Bukalova N P 
Published: November 2020

Abstract
A method of drawing up a statistically distributed characteristics of wastewater with the specified accuracy has been considered, which allows to study the patterns of fluctuation in the concentrations of organic phenolic substances in wastewater, on the example of the water discharged from Kamskiy Kabel, LTD. Based on the performed research, a model of the expected value and of mean square deviation of the fluctuation in the concentrations of organic phenolic substances has been built. It has been found that the fluctuation in the concentration of organic solvents in wastewater is seasonal, and the statistically distributed curve of the concentrations fluctuation has three extremum points.
Phytoremediation potential of aquatic plants in Uzbekistan for the treatment of cyanide-containing wastewater
Authors: Timofeeva S S , Timofeev S S , Boboev A A 
Published: November 2020

Abstract
For over a century now, the mining industry has been using cyanides for gold and silver recovery. Cyanides are highly toxic for human beings, animals, and aquatic organisms. The available physical and chemical methods of wastewater treatment are cost-ineffective. Certain microorganisms are capable of use cyanides as sources of carbon and nitrogen and turn those into ammonia and carbonate. Some plants are also efficient for the processes of cyanides destruction. Phytoremediation of cyanides may be efficient, cost-effective, environmentally friendly, and be used as an attractive alternative to traditional physical and chemical processes. This article considers the capability of aquatic plants, which grow in the valley of Zerafshan River on the territory of Uzbekistan, to dispose of cyanides and recover the cyanides-contaminated tailings of Navoi Mining & Metallurgical Combinat. Such aspects as the mechanisms of enzymatic detoxification of cyanides by aquatic plants and microorganisms are discussed. The most promising plants to be bedded in the tailings dump are selected.
Study of peak temperatures in friction stir spot welding of AA2024-Al/polycarbonate and AA2024-Al/polypropylene systems
Authors: Mohammed R K , Mohammed S S , Mahmoud T S 
Published: November 2020

Abstract
Compared to ordinary fusion welding processes, friction stir spot welding (FSSW) have significant advantages for example: joining of conventionally non-weldable alloys, improved mechanical properties and reduced distortion of weldable alloys joints due to the pure solid-state joining of metals. This welding technique gives the online feedback control and opportunity of automation, allowing automatic adaptation to geometrical and environmental variations of the component. However, several fundamentals of the process such as the temperature inside the stirred zone of the weld and its power on mechanical properties, are not yet fully understood. In the present study, FSSW was adopted to weld AA2024 aluminium alloy sheets with both polycarbonate (PC) and polypropylene sheets using two different tools having two different pin configurations. The two tools have conical pin with 2.5 mm height, however, tool (T1) has draft angle of ≈ 16.69° and the tool (T2) has a draft angle of ≈ 6°.The effects of FSSW parameters of the process, typically, the tool rotational speeds and dwell time, on temperature variation in the tool/work piece interface was also recorded, via an infrared camera. The results revealed that, increasing the tool rotational speed and/or the dwell time increase(s) the peak temperature in FSSW of both AA2024Al/polycarbonate and AA2024Al/polypropylene welded joints. For AA2024Al/polycarbonate joints, the peak temperatures recorded for tool T1 are higher than those recorded using tool T2. The peak temperature ranges were found to vary from 54 to 150 °C and from 45 to 136 °C, for joints welded using T1 and T2 tools, respectively. While, for AA2024Al/polypropylene joints, the peak temperatures recorded for tool T2 are higher than those recorded using tool T1. The peak temperature ranges were found to vary from 40 to 115 °C and from 61 to 143 °C, for joints welded using T1 and T2 tools, respectively.
Passive vibration attenuation: a comparison study
Authors: Abdelghany A A , Hegazy M M , Badawy A 
Published: November 2020

Abstract
A comparison study between two different approaches for passive vibration attenuation of solar array had been presented. A powerful finite element software “Ansys” was used to perform this study. Finite element models of a cantilever rectangular aluminum plate are created in order to model the satellite solar array. Stiffeners and circular patches (passive masses) are used separately in order to attenuate the vibration of the plate. The output results of the mode shapes and the FRF of the plate are investigated in order to figure out the best and adequate vibration attenuation technique for satellite solar array, the results showed that using stiffeners have a better effect on vibration attenuation more than using circular patches. A further investigation for vibration attenuation using stiffener is conducted to study the effect of changing the aspect ratio of stiffener.
Fracture toughness assessment of axial partially through cracks in X65 and X70 steel pipes
Authors: Said A E , Hassan H A , Abu-El-Yazied T G , Makady A M 
Published: November 2020

Abstract
This paper presents analysis of fracture assessment methods of axial partially-through crack in X65 and X70 steel pipes with internal pressure. Two analytical methods Folin–Ciocalteu method (FC method) and Gauss–Seidel method (GS method)) are used to make assessment for two steel pipes (steel X65 and X70). Finite Element model of X65 and X70 steel full-scale pipes with axial part-through crack was established. In this work, a comparison is made between results obtained from FC and GS methods and finite element model with previous experimental results. The GS is more conservative assessment method as it provides smaller crack depth (a) corresponding to (Jcr). Finite Element model in case of steel X70 is more conservative than the analytical methods and its results close to the experimental values.
Transient heat transfer for GPMG’s barrel 7.62x51mm
Authors: Ghanem M , Abdelsalam O 
Published: November 2020

Abstract
In this paper, a modified analytical solution for time-dependent one dimension heat diffusion equation in cylindrical coordinate had been mathematically solved to calculate the temperature distribution through thick-walled weapon barrel subjected to successive shots. The analytical solution has been compared with experimental measurements for the temperature at the outer surface of the barrel at two different positions. The General Purpose Machine Gun (GPMG) 7.62X51 mm was considered as the case of study. The results show a good agreement between the analytical model and the experimental work with a difference less than 3 %. The main difference between them mainly as a result of the very short time of the heating phenomena as it takes about 6 (ms) only, although the used Data Acquisition System was able to take a high sampling rate and a high sensitive thermocouple type k with only 0.5 mm thickness had been used.
Passive vibration damping of a cantilever plate
Authors: Mohamed A , Hassan A , Omer A A 
Published: November 2020

Abstract
Vibration control of mechanical systems divided into two types active and passive, this case study illustrates other approach of passive control of the cantilever plate by using double layers of the viscoelastic material (Dyad 606) one in the upper face of the Al substrate (5051) and the second one in the lower face. This layers are affected by axial uniform distributed force by applying tension load, the damping level depend on the value of this axial force where the vertical component of this force consistently the other way of the vibrating element that reduce vibration amplitude in this direction by about (95%) of the original amplitude without damping layers. Computational analysis using ANSYS program are used firstly to verify that the results from the software are compatible with that obtained from analytical and experimental evaluation by comparing the values of natural frequencies. Then using ANSYS model to calculate the reduction occurs in the lateral vibration with changing of the axial loads on the viscoelastic plates. The benefits of this model are enhancing the reliability and reducing the cost.