bluuebunny/crossref_metadata_2025_split huggingface dataset:
Study of adhesion characteristic of a surface alloy formed by a low-energy high-current electron beam
Authors: Yakovlev E V , Markov A B , Shepel D A , Petrov V I 
Published: November 2019

Abstract
In the present work, the adhesive strength of the surface alloy with different transition layer thickness was measured. A Ni-Cu surface alloy is formed using successive operations of Ni film deposition followed by mixing in a melted phase with the Cu substrate by a low-energy, high-current electron beam (LEHCEB). A different thickness of the transition layer was obtained by varying the thickness of Ni film deposited during the formation of the surface alloy. The study includes characterization of formed Ni-Cu surface alloys by scanning electron microscopy, in-depth elements distribution and scratch test. The results obtained showed correlation with thickness of the transition layer and adhesive strength of the surface alloy.
Interaction of cold atmospheric plasma jet with bio targets: different sensitivities of human cell lines
Authors: Zakrevsky Dm , Yelak E , Gugin P , Golubitskaya E , Troizkaja O , Koval O , Vagapov S , Schweigert I 
Published: November 2019

Abstract
Cold atmospheric plasma (CAP) jet device is developed and CAP jet was applied for the treatment of normal and cancer cells. The characteristics of plasma jet consisting of a sequence of cathode directed streamers are studied in the experiment and numerical fluid model simulations. A content of mixture of active radicals and ions due to plasma enhanced chemical reactions is calculated with 0D chemical model near the surface of biotarget. The evolution of spatial distribution of the streamer parameters (electric field, electron and ion density, electron energy) delivered by the streamer to the biotarget is calculated. The results of cell viability analysis of normal cells, HEK 293 (kidney embryonic stem cells) and malignant cells, A431 (skin carcinoma) demonstrate the different sensitivity to the indirect CAP jet treatment.
Influence of gas discharge plasma on forming process and properties of complex films
Authors: Zhidik Y S , Danilina T I , Chistoedova A A , Zhidik E V , Bitner L R 
Published: November 2019

Abstract
In this paper, we present the research results on the formation mechanism of stoichiometric compounds of complex thin films formed by ion-plasma sputtering in reactive gases environment. The kinetics of complex films’ formation and growth is studied as well as the change in characteristics of microelectronics elements formed on the basis of thin films during their electron-ion bombardment.
Modelling of Mossbauer spectra of layered metal systems obtained by ion-plasma sputtering
Authors: Zhubaev A K , Yerezhepova S K , Mukhanbetzhan T S 
Published: November 2019

Abstract
The layered Zr(2 μm)-Fe(10 μm), Sn(4 μm)-Fe(10 μm) and Sn(4 μm)-Zr(2 μm)-Fe(10 μm) systems subjected to isochronous annealings have been studied. The sequence of phase transformations is determined. In the three-layer system, the formation of intermetallic compounds with a high content of Zirconium and a solid solution α-Fe(Sn, Zr) is established. The spectra of 57Fe nuclei in Iron-based alloys of various concentrations were calculated. A comparison with the experimental spectra of the layered systems obtained by ion-plasma deposition of Tin and Zirconium on an armco iron substrate and subjected to thermal annealing at 750 °C showed a good correlation.
A comprehensive data-based assessment of forest ecosystem carbon stocks in the US 1907–2012
Authors: Magerl Andreas , Le Noë Julia , Erb Karl-Heinz , Bhan Manan , Gingrich Simone 
Published: November 2019

Abstract
The consistent and robust assessment of ecosystem carbon stocks remains central to developing and monitoring climate change mitigation strategies. Here, we investigate the dynamics of forest ecosystem carbon stocks in the conterminous United States between 1907 and 2012 at national and regional levels. We build upon timber volume records from historical forest inventories and use a modelling approach to include all relevant pools, e.g. soil carbon, to derive a comprehensive long-term dataset. We find a consistent increase in forest carbon stocks across the country, from 27 PgC in 1907 to 39 PgC in 2012, with persistent regional variations between western and eastern United States, signalling pronounced land use and land management legacy effects. We identify additional potential to increase forest C sinks in both west and east, on diverging levels. Extended forest C stocks stem from forest biomass thickening i.e. increases in biomass C densities, rather than forest area expansion. Our study reflects the first such effort to collectively understand the effects of environmental change and land management on contemporary biomass C stocks at the national level, and critically engages with ongoing initiatives towards assessing the potential for carbon sequestration in forest ecosystems.
Distribution features of yeasts in soils of South Vietnam (case study of the biogeocenoses of the National Park Cát Tiên)
Authors: Glushakova A , Maksimova I , Morozova A , Kachalkin A 
Published: November 2019

Abstract
The yeast communities of tropical soils of two biotopes in monsoon tropical forest in the specially protected natural territories of the National Park Cát Tiên were studied. It was possible to establish that the distribution of yeasts in the profile of studied soils differed markedly. Of particular interest was the isolation from the tropical soils of Vietnam the pedobiont yeast species Saitozyma podzolica, which is regularly found in soils of temperate latitudes of Russia and other regions.
Relationship between soil rheological properties and water retention curves
Authors: Khaidapova D 
Published: November 2019

Abstract
The interdependence between the rheological properties and the water retention curve was determined on the example of typical chernozems of Kursk region. The strength of the aggregates of humus horizons of a virgin chernozem, an arable chernozem, and aggregates of Bca horizon in a wide range of water content was investigated by the conical Rebinder’s plastometer. It was shown that the strength of the aggregates depends on water content. The dependence of aggregates strength on moisture is exponential. Comparison of virgin and arable soils revealed a positive effect of organic matter on the structural state of the soil. At high water content, aggregates of the virgin soil are more stable than aggregates of the arable soil and ones of the lower horizons Bca. In air-dry conditions, the strength of aggregates from the arable soil significantly exceeds the aggregates’ strength from the virgin soil, which indicates degradation processes in the arable soil, a decrease of organic matter content leads to an increase of interparticle interaction and an increase in a block-like structure. These experimentally obtained data confirmed the existence of a close relationship between logarithm’s values of the soil moisture full potentials’ moduli and the strength of soil aggregates and the presence of an appropriate linear regression dependence. Voronin’s structural-functional concept is confirmed by the fact that hydrophysical, mechanical and rheological properties of soils are functions of the soil structure.
Vermiculite-lizardite ameliorants from mining waste
Authors: Kremenetskaya I , Tereshchenko S , Alekseeva S , Mosendz I , Slukovskaya M , Ivanova L , Mikhailova I 
Published: November 2019

Abstract
Beneficiation products of phlogopite mining waste have been studied in terms of their use in soil engineering to improve soil hydro-physical and physicochemical properties. Vermiculite and lizardite minerals, parts of the obtained products, can interact with acid solutions and can be used to reduce the acidity of agricultural soils as well as to rehabilitate acidified industrial landscapes. The plant testing results indicate a positive effect of vermiculite-lizardite materials on plant growth and development.
Changes in soil conditions after application of biochar
Authors: Mukhina I M , Rizhiya E Y , Buchkina N P , Balashov E V 
Published: November 2019

Abstract
Biochar is a carbonized, stable product obtained by pyrolysis. Due to its structure, chemical composition and characteristics biochar can change soil properties over a long period. To study the effect of woody biochar on loamy sand Spodosol, a small-scale field experiment was conducted. Following treatments were used in the experiment: soil-control, soil with biochar at a rate of 5 t ha−1, soil with nitrogen fertilizer at a rate of 90 kgN ha−1 and soil with combined application of biochar and N fertilizer. Application of biochar increased water-holding capacity of the soil in the range of plant-available water by 7%, in average, increased soil moisture 1.13-1.19 times, reduced the soil bulk density by 5% and led to a short-term increase in soil pH.
Estimation of surface properties of Kostroma region soils formed on the Triassic clay deposits
Authors: Shvarov A P , Tyugai Z , Ivanov A V , Bykova G S , Dembovetskiy A V , Lebedev I E 
Published: November 2019

Abstract
The main indicators characterizing the surface properties of soils formed on the eluvium of Triassic clays of the Kostroma region have been studied. The categories of specific surface area and the degree of soil hydrophilicity have been calculated. Levels of sorption capacity and parameters of ultraporosity of the solid phase of the investigated soils have been identified.
Economical Study of a Boiler Fueled with DME
Authors: Song Xiao , Xiaoyu Chen , Lin Qi , Yanna Liu 
Published: November 2019

Abstract
In this paper, the cost-based function has been used to study the economy of a DME boiler (operating costs). The contribution of the emissions of major pollutants (CO2, NOx and CO) to the external costs are calculated. About 88% external costs is produced by CO2 emission. In addition, the internal costs and external costs and total operating costs are calculated. Subsequently, the operating costs of DME are used to compared with fuel oil. Clearly, not only the internal costs but the external costs of fuel oil are higher than that of DME. Importantly, the emissions of SO2 and SO3 are produced when boiler fueled with fuel oil. The use of DME leads to annual saving 299375.68 US$ (saving efficiency about 41%) comparing with fuel oil.
Neural network monitoring and predictive control of the reliability and safety of gas distribution networks using deep learning algorithms
Authors: Zemenkova M Yu 
Published: November 2019

Abstract
The work deals with the development of an algorithmic, mathematical complex based on neural networks of deep learning to assess and predict the reliability and safety of gas distribution equipment based on diagnostic data. The article describes the features of creating a predictive control system within the framework of the CI-TREMS complex. The work describes the algorithms and presents an example of the implementation of the system on one of the nodes of the gas distribution network.
Temperature condition of a stopped underground oil pipeline
Authors: Yakupov A U , Voronin K S , Cherentsov D A 
Published: November 2019

Abstract
Carrying out thermal calculations of “hot” oil pipelines, through which highly viscous and high pour point oils are transported, is one of the main ones. Determining the cooling rate of oil in a stopped oil pipeline is of great practical importance. The cooling time is used to calculate the safe stop time of the “hot” oil pipeline. The time at which there will be no freezing of the “hot” oil pipeline, and the station pressure is enough to overcome the shear stresses that arise when cooling highly viscous and high pour point oil. The methods of finding the cooling time of oil in a stopped pipeline are considered, which allow determining the time of a safe stop of the pipeline. Installed thermal stabilizers designed for cooling the soil can affect the cooling rate of the “hot” oil pipeline.
Improving the production activities of a unit of an industry-specific company
Authors: Chizhevskaya E L , Fedorova O B 
Published: November 2019

Abstract
The goal of finding ways to optimize the production and economic activities of enterprises is usually cost optimization. In this case, the solution of the indicated problem should occur without compromising the organization of production processes of the enterprise units. In this regard, the most urgent is the search for possibilities to increase the efficiency of the use of resources available to the economic entity. The article presents the results of an analysis of indicators of production activity of a unit of an industry-specific company, considers the areas of searching for and utilization of reserves for the growth of production organization efficiency.
High-tech drilling of wells in offshore fields using import-substituting technologies
Authors: Alekseev A G , Egorova E V 
Published: November 2019

Abstract
The article considers the relevance of increasing the efficiency of development of offshore shelf deposits in the North Caspian, using the example of the oil and gas condensate field named after Y. Korchagin. The development of offshore fields is associated with the use of the latest expensive technologies aimed at highly efficient development of facilities with hard-to-recover hydrocarbon reserves. The involvement of field operators in the development of expensive imported technologies leads to a significant increase in the cost of oil produced. In this regard, there is a need for testing and introducing similar domestic technologies into the offshore field development process to optimize the hydrocarbon production process.
Possibility of using renewable energy sources in the Republic of Ingushetia
Authors: Malsagov M I , Elbazurov A R , Titova G R 
Published: November 2019

Abstract
The article is devoted to an acute problem of the humanity - the scarce of energy sources, in particular in the Northern Caucasus. Therefore it is necessary to use renewable energy as a pure and undeveloped source. In this paper the authors explore the situation in Ingushetia. Nowadays the Republic has got a serious problem of electricity liabilities non-transparency of accounting system, quality and reliability of electricity supply. In the article it is possible to find general features of the region, the analysis of the current situation in the electric industry of the Republic, the power system characteristics, the electric industry development program and profitability of wind, water and geothermal energy analysis. The issue of switching to renewable energy is also considered.
Principles of cadastral valuation and usage of water reservoirs in the Republic of Kalmykia
Authors: Staselko E A , Erdniev O V , Balinova T A , Germasheva U S , Snagadjieva S A , Baryshev A V 
Published: November 2019

Abstract
The article deals with the principles of the cadastral valuation in the area of water reservoir construction site. Rules of using water resources, technical maintenance and water reservoir improvement are given. Special attention is paid to the land-use planning in the area of the water reservoir construction. Basing on the results of the pre-design and land-use planning, a number of land plots and active areas of water utilization scheme and participants who receive profit from the water reservoir have been determined. These data can be used to determine the cadastral value and the land tax.
The simulation of high-pressure water vapor injection using core material
Authors: Krivova N R , Kolesnik S V , Chebykina Yu B 
Published: November 2019

Abstract
Effective reservoir development and economically viable development of high-viscosity oil require experience and comprehensive experimental studies on the physical modeling of oil recovery processes using various technologies and displacement agents. The article discusses the filtration processes occurring in the reservoir during the injection of high-pressure water vapor. The results of the filtration experiments show that increasing the temperature to 90 °C makes it possible to effectively displace viscous oil from the reservoir models, while the displacement coefficient reaches 76 % after pumping 1.59 pore volumes of distilled water. It should be noted that the injection of low or demineralized aqueous fluids at reservoir temperature and pressure leads to rapid swelling of clay minerals of the formation rock, attenuation of filtration and loss of reservoir properties of the rock.
Influence of drilling fluids on the filtration properties of reservoirs
Authors: Lipatov E Yu , Krivova N R 
Published: November 2019

Abstract
Currently, during the opening and testing of productive formations, as well as during repair work in wells, specialized water- or oil-based technical fluids are used. All of them are characterized by compatibility to varying degrees with the lithological and physical properties of reservoirs in Western Siberia and have different effects on the filtration properties of the porous reservoir of productive formations. It is known that when using fresh water-based drilling fluids, due to the interaction of the fresh water filtrate with rock cement and some rock-forming minerals, the permeability of the bottom-hole zone changes. The paper presents the results of an experimental study of the effect of drilling fluids on terrigenous rocks of one of the fields. The impact of drilling fluids on the core, with the exception of FLO-PRO and NaCl, led to a decrease in the oil-permeability of core samples. In the core of the terrigenous reservoir, filtering FLO-PRO does not cause a negative result. The curves of permeability changes with increasing filtration pressure before and after FLO-PRO flow are identical in dynamics. According to the results of the study, it can be concluded that technical fluids FLO-PRO and IES (invert emulsion solutions) can be recommended for use as they do not violate the structure of the pore space of the reservoir and do not lead to a significant decrease in oil-permeability of all core layers.
Fisher–Tropsh synthesis technology evolution
Authors: Loseva N I , Niyazbakiev I I , Silman A V 
Published: November 2019

Abstract
the article considers the development stages of technologies for producing hydrocarbons based on syngas. XTL technology is based on the Fischer–Tropsch process. Carbon-containing substances in any aggregate state can be used as a raw material of XTL technology, which will affect the chemistry and process parameters. Currently, interest in these technologies has increased in connection with the advent of scientific and technological innovations. The latest generation of XTL technology has already entered the industrial production phase. The article presents the results of a comparative analysis of XTL technology of different generations, the main indicators of which were the state of raw materials, the type of reactor devices, the chemical composition of the catalytic systems and the resulting product. The advantages of the technology proposed by INFRA Technology Company involving an innovative reactor design for a high-performance multifunctional catalyst, are shown. At the same time, the necessity of combining gas and liquid flows in an innovative microchannel reactor, increasing the conversion of synthesis gas, as well as the high cost of the fourth-generation XTL technology are urgent problems that need to be addressed at the current stage of the evolution of Fischer–Tropsch processes.
Investigation of the ozone treatment effectiveness of urban wastewater containing biologically-resistant organic pollution
Authors: Alekseev Stanislav , Pipko Daria 
Published: November 2019

Abstract
When developing the technology of using ozone for the subsequent purification of municipal wastewater from biologically resistant organic pollutants, it is important to determine the required ozone dose and the duration of oxidation. Post-treatment of wastewater after biological treatment is used, for example, for the destruction of biologically resistant textile dyes and surfactants. It is known that, for example, during the process of ozonation, decrease in color occurs earlier than the decomposition of the organic matter of the dyes. Therefore, the water treatment process is controlled by several indirect indicators, such as oxidation, total organic carbon, etc. It is difficult to determine the necessary dose of ozone for the decomposition of pollutants. We carried out the experimental studies and examined the material balance of the process of destruction of pollution by ozone. A method is proposed for measuring and calculating ozone consumption in the destruction of pollution in wastewater. According to the results of test ozonation of waste water, the dependence of ozone consumption on the processes of pollution destruction is built. The method allows to determine the required specific dose of ozone for the destruction of pollution and the duration of ozonation for equipment design.
Lean production in investment-construction industry. Adaptation to phases of customer business cycle
Authors: Anokhov Igor 
Published: November 2019

Abstract
Lean production is being effectively used in many areas. Construction sector has its own conceptual differences such as necesssity of relocation of materials and production divisions between construction sites. Besides, every construction project is unique in a sense that even a standard project requires consideration of local conditions, and differs in terms of resources delivery, storage conditions, etc. Construction project involves many different parties (project designer, contractor, subcontractors, and suppliers), creating numerous management challenges. Lean production technology in this situation recommends the interpenetration of customer and contractor units. However, such a measure only partally increases flexibility of the construction industry, but does not eliminate the reasons for the descrepency between the periods of activity of customers and contractors. The article discusses ways to ensure maximum adaptability of the construction firm to the changes in customer business cycle. Construction companies are invited to create supersystem of common universal production, labor, and service units, which will significantly increase the flexibility of the construction industry. In addition, lean production technology should be complemented with tools for monitoring changes in the physical, communicaiton, technological and design activities of construction customers.
Test calculation of steel I-beams with non-standart cross-section at restrained torsion
Authors: Dmitrieva Tatiana , Lukin Alexey , Khukhuudei Ulambayar 
Published: November 2019

Abstract
Solved the test problem to determine the stress-strain state of a steel I-beam with non-symmetrical flat web in conditions of restrained torsion. In the first version, the problem is solved analytically using the formulas of the mechanics of materials. The second version of the calculation is performed numerically in «ANSYS 14.5» software package based on the spatial model, where finite elements of shell type are used. A comparative analysis of numerical solution with an analytical calculation revealed the adequacy of the FE model of shell type.