bluuebunny/crossref_metadata_2025_split huggingface dataset:
Electrical conductivity of uniaxial-deformed monocrystals Tli-xAgxInSe2(0 < X < 0,03)
Authors: Matiev A , Uspazhiev R , Khamkhoev B , Kodin V , Sidorkina N , Nalgieva M , Evteeva R , Khamsurkaev Kh 
Published: August 2020

Abstract
We have studied the effect of uniaxial compression (stretching) deformation on electrical conductivity along the crystallographic axis [00l] of monocrystals TlInSe2 and derivant solid solutions. It has been found that substitution of Tl atoms with Ag atoms in crystals of solid solutions based on TlInSe2 leads to a shift of the energy of indirect transitions to the long-wave zone. The obtained results have been compared to both theoretical calculations of the zone structure of TlInSe2 crystals and the multi-valley model.
The use of wind potential in the local energy of Yakutia
Authors: Ivanova I Yu , Nogovitsyn D D , Tuguzova T F , Shakirov V A , Sheina Z M , Sergeeva L P 
Published: August 2020

Abstract
The article is devoted to the possibility of using renewable energy sources for electricity supply to consumers in remote regions of Russia, isolated from power systems. The use of wind energy resources for power supply will reduce the consumption of diesel fuel and, thus, improve the reliability and efficiency of electricity supply to consumers. At the same time, wind power stations are considered as a complementary energy source when working together with diesel power plants, which are the main ones for power supply to decentralized consumers. The construction of wind farms in addition to existing diesel power plants in modern price conditions is cost-effective in the Arctic regions of Yakutia. The extent of the use of renewable energy sources is currently very small. Justification of the use of wind energy for each locality requires a separate specific study to assess the financial and economic efficiency with a preliminary determination of the optimal capacity of wind farms.
Obtaining sodium silicate solutions for the activation of mineral powders
Authors: Salamanova M Sh , Ismailova Z Kh , Nahaev M R , Bisultanov R G 
Published: August 2020

Abstract
Currently, the creation of clinker-free binders that do not require high-temperature processing and a substantial natural resource, and have high technical indicators, is an urgent task. The active component of alkali metals characterizes alkaline cement. A distinctive feature of alkali cement is its ability to interact with aluminosilicate minerals during hydration, which leads to the formation of active and hardly soluble compounds. The basis for the production of concrete composites based on chemical activation binders is the domestic and foreign experience in the use of slag-alkali composites in construction. In this work, an energy-dispersive microanalysis of clinker-free compositions based on alkaline silicate of sodium solutions from silica-containing rocks is carried out. The developed formulations of clinker-free binders based on highly dispersed powders of different nature, sealed with an alkaline solution prepared by the wet method at temperatures up to 95 °C and atmospheric pressure. This technology expands the scope of alkaline cement and produces concrete with desired properties. This work was carried out as part of research on the implementation of scientific project No 05.607.21.0320. “Development of technology for new building composites on clinkers alkaline binders using substandard natural and secondary raw materials,” which received support from the federal target program “Research and Development in Priority Directions for the Development of the Russian Science and Technology Complex for 2014–2020.”
Structure and properties of comenic acid and complex compounds of magnesium, copper (II) and zinc
Authors: Shamsutdinova M Kh , Dzhabrailova L Kh , Kurbanov Yu Ya , Volynkin V A , Bukov N N , Ivashchenko L I , Lindt D T , Panyushkin V T 
Published: August 2020

Abstract
The paper studies the features of complex formation of comenic acid with Mg2+, Cu2+ and Zn2+ ions. Besides, the paper presents the forms of binding of comenic acid with magnesium, copper (II) and zinc ions as well as the composition of complex compounds formed. Using IR and NMR (1H, 13C) spectroscopy, there was studied the structure of compounds the geometry of which was confirmed by quantum chemical calculations.
Surface Properties of Melts Based on Tin
Authors: Kasumov Yu N , Kutuev R A , Manukyants A R , Sozaev V A 
Published: August 2020

Abstract
This paper presents the results of the surface properties of the tin-based melts. It has been shown that the best wetting of Al-4 at. % Li grade aluminum, silicon, and piezoceramics are achieved by the eutectics and terectics of tin-aluminum, tin-zinc, and aluminum alloys, respectively. Preliminary photon annealing of the substrates for 3–4 sec improves the wetting of silicon and ceramics. Solder wetting is also improved by the addition of copper and nickel micro powders, alkaline, and alkaline earth elements.
Justification for increasing the performance of hydrochloric acid treatment in wells of fields with carbonate reservoir
Authors: Mukhametshin V Sh 
Published: August 2020

Abstract
The geological and technological parameters, which have a prevailing influence on the success of the treatment, were established on the basis of analysis and synthesis of experience of hydrochloric acid treatments in the conditions of Tournaisian oil deposits of the Volga-Ural oil and gas-bearing province. The algorithms, which allow selecting wells for hydrochloric acid treatment, determining the parameters of treatment taking into account peculiarities of geological structure of formations, time factor, peculiarities of technology of wells and deposits operation, were proposed. The conditions for the most successful implementation of this type of treatment on the bottomhole zone to intensify oil production and reduce the water cut in order to increase the level of profitability of deposits in carbonate reservoirs with hard-to-recover reserves were established.
On the determination of design and geometric parameters of a upper bit slurry grinder
Authors: Zaynagalina L Z 
Published: August 2020

Abstract
Experimental and field studies have identified the rational geometric dimensions of elements of upper bit sludge grinder, ensuring its operation’s stability. Laboratory studies of upper bit device model showed that the amplitude of drum oscillations depends on the shaft rotation frequency, spring stiffness, and drum inertia moment. To determine the dimensions of working channels and drum openings of a upper bit device, the analysis of slurry samples from directional and horizontal wells was carried out. Designs of a slurry grinder for drilling wells with cone bits with diameters of 146 and 215.9 mm have been developed. Field tests showed that the use of the developed design of near-bit sludge grinder allows to increase the mechanical speed by 18% compared to the conventional method of drilling.
The Basic Principles of Ecovillage Design
Authors: Blahovestova O O , Pechertsev O O , Dansheva S O 
Published: August 2020

Abstract
The article discusses the basic prerequisites for the emergence and development of ecological settlements, analyses the concepts of eco-settlement and sustainable development. As a result of the analysis of literature sources, the basic principles of eco-settlement’s design were identified: the principle of ecological functioning, the principle of using traditional building materials, the technogenic principle and the principle of sustainable transport development.
Symbolism and functional organization of architecture of the Orthodox religious and educational complex
Authors: Khaidukov V , Sleptsov O 
Published: August 2020

Abstract
The focus of the article is a scientific investigation of the symbolism, functional organization and peculiarities of the formation of the Orthodox religious and educational complex and its components: the spiritual and educational centre and the monastery complex. The topic of the article is devoted to the study of cruciform structures and the actual scientific and applied problem of forming the conceptual foundations of religious and educational complexes. A place of worship is one of the few visually recognizable types in the entire architectural typology. It is the symbolism, which is one of the foundations of sacred architecture, that formed the visual expressiveness of the structures. The cross, as one of the main symbols of Christianity, influenced the formation of temple architecture. In general, the evolution of the symbol of the cross in architecture has created three basic types of structures: cruciform, cruciform transitional and circular. The above structures directly affect the formation of the architectural space of the sacral structures. On the basis of the established principles and techniques of construction of architectural and spatial solutions of buildings and structures of Orthodox architecture and the proposed method of architectural organization of Orthodox centres and complexes, it becomes possible to develop rational architectural and construction solutions.
Design features of low-rise buildings walls erected from permanent formwork ComBlock units
Authors: Spirande K V , Bondarenko Yu V , Iakymenko M V , Shemet R M , Bielka V V 
Published: August 2020

Abstract
The study focuses on the design of load-bearing monolithic concrete and reinforced concrete walls of low-rise buildings erected from permanent formwork ComBlock units for construction, in areas without episodic influences and analysis of their work. While developing the recommendations the main attention was paid to working out design solutions of load-bearing monolithic walls with minimal reinforcement consumption. The guidelines contain general provisions for the design and calculation of load-bearing vertical elements of a house; numerous studies of the stress-strain state of monolithic vertical load-bearing elements of low-rise buildings with different structural schemes.
Nanomodified cement composites for thin walled architectural structures
Authors: Plugin Andrii , Pushkarova Kateryna , Sukhanevych Maryna 
Published: August 2020

Abstract
The article presents the studies of the processes of structure formation in the system “cement-plasticizer - crude carbon nanotubes”, established the relationship with the parameters of the structure, physical-mechanical and operational properties of composite materials from the standpoint of physico-chemical mechanics of dispersed systems and shows the influence of processes on the physical-mechanical properties of cement composites. The plastic strength and physical and mechanical properties of nanomodified cement mortars and fine-grained concretes have been studied and it has been shown that the use of the developed composite materials should be used to obtain fine-grained concretes for thin-walled architectural structures.
Influence of whitening additives on the properties of decorative slag-alkaline cements
Authors: Gots V I , Gelevera A G , Petropavlovsky O N , Rogozina N V , Smeshko V V 
Published: August 2020

Abstract
Traditional decorative cements are made on the basis of white cements and the demand for them is constantly growing. But such cements have all the disadvantages of clinker cements, namely, high energy intensity and high price. An alternative may be slag-alkali cements having higher physical and mechanical characteristics and lower price. Therefore, these studies were aimed at choosing such additives that would have the maximum whitening properties and would enhance the stabilization of bleaching processes during hydration and hardening of slag in the presence of alkalis, to determine the simultaneous effect of three additives on the whiteness and physical-mechanical characteristics, as well as to determine the optimal the content of these additives in slag-alkali decorative compositions. In this work, as a result of the studies performed, the possibility of obtaining effective slag-alkali white cements as the basis for the production of decorative concrete with acceptable economic characteristics is proved. The influence of each of the bleaches on such characteristics of decorative slag-alkali cements as strength, setting time, whiteness is established. Methods for optimizing compositions are identified.
Processes of structure formation and neoformation of basalt fiber in an alkaline environment
Authors: Berdnyk O Yu , Lastivka O V , Maystrenko A A , Amelina N O 
Published: August 2020

Abstract
Several approaches can be used to determine the effect of an alkaline environment on glass materials (basalt fibers). One of the most common approaches for the determination of the alkali resistance of a substance is to measure the relative mass loss after the interaction of the object of research with the alkaline environment. According to the practice guidelines, the approach involves determining the alkali resistance of a glass by measuring the mass loss per unit area of the glass under test after boiling it in an alkaline solution. But the disadvantage of this approach is it can’t be applied to basalt or another multicomponent fiberglass as it doesn’t introduce different speeds of fiber dissolution.
Application of the easy concentration effect in concrete technology
Authors: Shishkina Alexandra , Shishkin Alexander 
Published: August 2020

Abstract
The results of studies of the influence of nano-modifiers on the appearance of dimmers of colloidal surfactants on the compressive strength of concrete and the rate of its formation are presented. It has been shown that colloidal aliphatic surfactant increases the strength of concrete. Moreover, the joint introduction of a colloidal aliphatic surfactant and traditional hydrophilic surfactants leads to an even greater increase in the strength of concrete. A significant increase in concrete strength occurs at an early age in concrete.
A source of thermal energy for roasting phosphogypsum – incinerators flue gas
Authors: Vinnichenko V I , Krot O P , Krot O Y 
Published: August 2020

Abstract
The existing technologies for phosphogypsum utilization during its handling into building materials have been analyzed. Functioning equipment for joint utilization of municipal solid waste and phosphogypsum has been presented. An additional product of the installation, in addition to electrical and thermal energy, is gypsum. The waste gases from the incinerator are a heat source for roasting phosphogypsum. Fuel for the handling of phosphogypsum into gypsum is not used. A methodology for determining the specific amount of gases from a waste incinerator required for roasting phosphogypsum has been described in the article. The quantitative indicators for the reduction of polluting gases during the joint utilization of two waste types compared with operating independently waste treatment have been presented.
Complex multifunctional additive for anchoring grout based on alkali-activated portland cement
Authors: Krivenko P V , Petropavlovskyi O M , Rudenko I I , Konstantynovskyi O P , Kovalchuk A V 
Published: August 2020

Abstract
Complex multifunctional additive (further, CA) which consists of aluminum powder, surfactant, salt-electrolyte (NaNO3) and calcium sulfate hemihydrate (CaSO4·0.5H2O) is proposed for ensuring necessary properties of anchoring grouts based on alkali-activated portland cement (further, AAPC) presented by the system «ordinary portland cement clinker - sodium metasilicate». Specified consistency of fresh AAPC mortar along with it strength after hardening are provided by water reducing due to application of modified polyethylene glycol characterized by stability of molecular structure in AAPC hydration medium. CA influence on shrinkage mitigation in AAPC mortar is explained both water-reducing effect and gas release with volume increasing during formation of dispersive-coagulation structure. Expansion of crystallization-condensation structure is ensured due to stress of calcium hydrosulfoaluminate 3CaO·Al2O3·3CaSO4·32H2O and calcium hydronitroaluminate 3CaO·Al2O3·Ca(NO3)2·10H2O which form due to presence of CaSO4·0,5H2O and NaNO3 in CA. Time matching of gas release with structure formation insures dense microstructure due to filling of pores by hydrated phases that causes lower excess stress during crystallization. CA ensures necessary performances of AAPC anchoring grout: consistency 190 mm; workability retention time 15 min; tensile strength in bending / compressive strength 6.1 / 25.7 MPa and 12.9 / 68.5 MPa in 1 d and 28 d agreeably; adhesion 0.9 MPa; linear extension up to +0.37 mm/m.
Modeling of thermal conductivity of reed products
Authors: Tsapko Yu V , Tsapko A Yu , Bondarenko O P 
Published: August 2020

Abstract
The present work researches processes of heat transfer by samples of mats manufactured from reed. Due to the unique properties of the reed, such as medium density, low thermal conductivity, relatively high weather resistance, high chemical resistance, possibility to produce parts on-site, cost-effectiveness and others, reed products are widely used in building construction despite the high rate of development of new technologies. The mechanisms of heat insulation in the result of energy transfer through the material are established, which makes it possible to influence this process. It is proven, that the mechanisms are conditioned upon the increased porosity of the material. Thus, decreasing volume weight results in decreasing thermal conductivity, and vice versa. The simulation of the heat transfer process with the flameproof coating is carried out, the dependencies of the thermophysical coefficients on the temperature are determined. Based on the obtained dependencies, the coefficient of thermal conductivity for the products made of dry pine wood is calculated and makes 0.056 W / (m · K). Features of slowing down the process of heat transfer to material made of wood wool and glue binding agent with the formation of pores were studied. This is explained by the fact that there is no movement of air in large pores, accompanied by heat transfer. Thus, there are grounds to argue for the possibility of directed regulation of the processes of the formation of thermal insulation products using the reeds characterized by voids in the stems.
Introduction of innovative water treatment technologies - the key to sustainable development of the modern city
Authors: Petrushka K.I , Malovanyy M S , Petrushka I M , Pohrebennyk V D , Mokryy V I 
Published: August 2020

Abstract
The mechanism of conductivity of natural ion exchangers and resin KU-2 in ammonium and chlorine ions. On the basis of experimental data obtained dependence for pure solution and ionit-solution systems allowed to set the concentration of isoconductive solution (in which the concentration of electrical conductivity of the solution is the same as in the ionic). The method of measuring of resistance of a layer of grains of granulated ionite after removal of equilibrium solution by centrifugation is suggested. On the basis of experimental studies the types membrane backfill and determined the optimal modes of implementation of electrodialysis in the cell with membranous backfilling. The conducted researches give the possibility to implement the principle model approach to describe the conductive properties of ion-exchange materials and its experimental verification. The mathematical model of the conductivity of ion-exchange resins and columns, which combines the theoretical approaches of three wired and microheterogeneous model. To check the adequacy of the developed model was investigated the electrical conductivity of synthetic and natural ion exchangers materials, as well as columns of these materials in solutions of different salts. This has allowed us to develop a model to describe the electrical conductivity of ion-exchange materials and to measure the proportion of current which flows through the gel, solution and a mixed channel conductivity in an ion-exchange system containing two-chargers ions. The algorithm of calculation of physical-chemical parameters of water purification process by electrodialysis with ionite membranes with use of ionization in the form of granules, as a intermembrane backfilling. The use of the obtained results will predict parameters of process of ion-exchange purification of model solutions of wastewater and multicomponent industrial solutions.
The conceptual framework of sustainable development and the role of environmental and technogenic safety in achieving it
Authors: Hunchenko O , Voloshkina O , Korduba I , Kravchenko M , Stefanovych P 
Published: August 2020

Abstract
The article deals with the issues related to the environmental aspects of the development of economic production performance and their impact on the sustainability of production development. Reaching a certain level of technogenic safety and the ability to influence it through a number of organizational and technical measures are the factors for improving environmental safety. The formation of the optimal direction and value of the «vector of sustainable development» (VSD) which includes the «security vector» (SV) that currently may be limited by the economic development and stability indicators, the requirements of environmental legislation and the quality of the ecological fund, the labour legislation, the level of the technological effectiveness and the environmental compatibility of production, the quality of labour potential, the health and well-being standards, the social aspects of development and protectability, the level of understanding of personal safety and personal responsibility for the safety of others were justified. The directions of risk formation and technological and environmental safety reduction for the construction industry, among which the main ones are those that are being formed at the level of the global world economic and political processes, the state, the construction industry itself, the local communities, the external organizations and contractors and a specific construction organization were outlined.
Developing Requests in Multilingual Classroom Interaction: A Case of Second Language Development in Middle Childhood
Authors: Routarinne Sara , Ahlholm Maria 
Published: August 2020

Abstract
Much research has been conducted in adult second language learning through interaction, but knowledge about the child language learner has remained scarce. To address social language development in middle childhood, the article presents a longitudinal case study concerning a nine-year-old L1 Russian-speaking learner of Finnish. The data consist of 48 h of video-recorded lessons. By examining requests, the article demonstrates how a learner’s actions built on interaction, the affordances of the local context and embodiment, and access to multiple languages identifiable as Russian, English, and Finnish. The analysis focuses on the very beginning of language learning and the middle of the academic year. Through a detailed analysis of multimodal interaction, the study demonstrates the progress from simple language such as free-standing nouns and adjectives to more complex language in actions such as requests constructed as clauses by the focal learner. In addition, the analysis enhances understanding of the development of multilingual competence in interaction. Finally, the results indicate that learning a language is intertwined with embodied interactional competence and growth in linguistic repertoires.