bluuebunny/crossref_metadata_2025_split huggingface dataset:
Exponentially varying suction and injection on MHD viscous oscillatory stratified flow between parallel porous plates
Authors: Prasanna Venkatesh L. , Manoharan R. 
Published: November 2019

Abstract
Start your abstract hereIn this paper we consider Magenetohydrodynamic viscous oscillatory flow of incompressible linearly density stratified fluid in a long vertical rectangular channel with injection through y – axis and suction through the plate parallel to y - axis. In the undisturbed state the density distribution is assumed to be linearly distributed. Closed form solutions are obtained using similarity transformation. The effects on axial and transverse velocity profiles due to various parameters involved in the problem are illustrated in the figures. The graphical representations of the investigation show that the stratification effects are more on transverse velocity profiles than that of axial velocity. For constant density and zero electromagnetic induction the result reduces to that of viscous oscillatory flow between parallel plates
Impact of Heat Transfer and Viscous Dissipation on Unsteady MHD oscillatory Dusty Fluid Flow Through a Vertical Porous Channel
Authors: Vijayalakshmi R. , Govindarajan A. 
Published: November 2019

Abstract
This work discusses the effect of heat transfer and viscous dissipation on unsteady MHD (Magneto Hydro Dynamic or Hydromagnetic) oscillatory dusty fluid flow through a vertical porous channel. The governing equations for both fluid and particle phase are solved separately to get the exact solution for velocity and temperature profiles. The effect of various dimensionless parameters are displayed graphically and discussed qualitatively.
Some Subclasses of Analytic Functions With Respect to (j, k)-Symmetrical Points
Authors: Ramachandran K. , Vanaja R. , Ramamoorthy K. 
Published: November 2019

Abstract
In this paper, the author introduces a new subclasses of analytic functions with respect to (j, k)-symmetric points and investigate various inclusion properties for these classes.Integral representation for functions in these classes and some interesting applications.
Fuzzysequencing problemwith uncertain processing time
Authors: Leelavathy T. , Kowsalya M. 
Published: November 2019

Abstract
In this paper, we suggested a new approach to obtained an optimal sequence “for fuzzy sequencing problem with trapezoidal fuzzy number.” Using new fuzzy arithmetic operation and ranking method, an improved algorithm is proposed to obtain the fuzzy total elapsed time for processing all the jobs without converting problem into classical form. The approach is efficiently illustrated with a numerical example.
Assessment and mapping of transport load in the central ecological zone of the Baikal natural territory to ensure tourism and recreational activities
Authors: Dashpilov Ts B 
Published: November 2019

Abstract
Without a stable working transport infrastructure, intensive development of tourism and recreational activities is impossible; therefore, it is necessary to assess the possibilities of transport on the territory of the Central Ecological Zone of the Baikal Natural Territory (CEZ BNT). For this purpose, the author has analyzed the transport infrastructure in CEZ BNT within the boundaries of the districts of the Irkutsk Region. The author has studied in detail the main types of the transport system, their geographical location as well as infrastructure facilities of transport in the territory of CEZ BNT. Moreover, the author has assessed the functioning of transport in this area to ensure the development of tourism and recreational activities. The author has also analyzed the volume of transported passengers in the regular passenger routes and the number of transported passengers and vehicles on ferry crossings. The analysis of transport has identified some problems, the solution of which is necessary for better service to the population and the economy. In this regard, the author has proposed some recommendations for solving problems as well as scenarios for the optimal development of transport in the territory of CEZ BNT. For a more holistic analysis of the territory, geoinformational mapping of transport areas of the Irkutsk Region included in CEZ BNT has been performed, which shows the main types of transport (railways, highways and waterways), temporary accessibility to the regional center and main infrastructure facilities (gas stations, ports, wharves, airports, runways, and helipads).
Analysis of lightning discharges activity within the territory of Buryatia in 2010-2016 based on WWLLN data
Authors: Yu Karanina S , Karanin A V , Baranovsky N V , Kocheeva N A , Yu Belikova M 
Published: November 2019

Abstract
Thunderstorm activity is the main natural cause of forest fires. The development of new or modernization of existing systems for monitoring and forest fires forecasting requires the involvement of data on the spatial and temporal distribution of thunderstorms in monitorable forest areas. This article discusses the territory of the Republic of Buryatia (Russian Federation). The study of the spatial and temporal components of thunderstorm activity was carried out based on the World Wide Lightning Location Network (WWLLN) data. WWLLN data on thunderstorms locations for 2010-2016 were used. The network registers lightning discharges during the year. The thunderstorm season lasts from May to September. Archival WWLLN data for this period were selected. The resulting dataset allowed us to distinguish areas with different lightning activity. A high degree of spatial nonuniformity of thunderstorm activity in Buryatia was established. The number of lightning discharges begins to increase in May, the maximum is observed in July, and a recession occurs in August. Two daily maximum were revealed: the first maximum of number of lightning discharges is in the interval from 12 to o’clock and the second is about 19 o’clock of local time.
The features of landscape mapping in the environmental assessment
Authors: Konovalova T I , Plyusnin V M 
Published: November 2019

Abstract
Along with the General scientific methodology of mapping of geosystems, special cartographic models are developed for practical purposes, which take into account the needs of the industry for which they are created. The article deals with the main methods of mapping to solve the problems of environmental impact assessment of objects Verkhnechonskoye oil and gas condensate field and the system of external transport of oil. Due to the specifics of the Northern territory in the legend of the map reflects the geological and permafrost characteristics of each landscape, as well as the main processes taking place in them. Analysis of the set of factors displayed for each landscape made it possible to divide the latter into three degrees of stability (the ability to restore its original appearance after external influence). For convenience of perception of the cartographic image, each area is shown in the color scale with separate numbering of contours. Colors within each district differentiate according to certain basic typology landscape on different landforms, which alter hydroclimatic conditions. The article gives examples of legend maps and explanations to assess the transformation of landscapes in natural and anthropogenic conditions. The modern transformation of landscapes and the forecast of their changes are based on a detailed assessment of natural conditions, their dynamic and evolutionary transformations, ecology of plant species, and the nature of anthropogenic impact.
The influences of climate on runoff: a case study of four catchments in Western Siberia
Authors: Kopysov S G , Erofeev A A 
Published: November 2019

Abstract
Currently, dynamic processes, affecting runoff in catchments, are poorly understood. Among all the elements of water balance calculations, the streamflow is the most accurately measured and largely reflects the current moisture content of the active layer. Devices for automatic measurement of water level and temperature of soil, water and air were installed in four small catchments with different climatic conditions. The studied catchments are located in a zone of oligotrophic swamps of the southern taiga, a zone of hilly swamps of the forest-tundra, a foothill zone of the southern taiga, and a mountain-glacial basin. Runoff in the mountain-glacier basin is determined using an acoustic level meter of the water flow. As a result: Site 1) We have revealed a change in the water-physical properties of the active layer in the marshy catchment, which resulted from the 2012 drought; Site 2) We have shown the linkages of the moisture content of the soil above the water table with extreme water discharge in active watersheds; Site 3) The increase in autumn runoff is due to thawing of seasonal permafrost and snow-melt in the tundra; Site 4) In the mountain-glacier basin, our studies are at an initial stage.
Landscape-hydrologic systems and erosion processes across the middle Ob region
Authors: Korkin S E , Isypov V A , Korkina E A 
Published: November 2019

Abstract
The present paper considers landscape and hydrological systems and erosion processes in the middle Ob territory. In the monograph by A.N. Antipov and V.N. Fedotov [1], the middle Ob territory belongs to Ob-and-Irtysh forest-boggy, lowland accumulative landscape hydrological system of Western Siberia. In recent years, many significant events of natural character within the middle Ob territory (high level of floodwater in 2002, 2007 and 2015 and unusually warm and low water summer in 2003, 2012 and 2016) bring into focus the role of climatic changes. Variations of meteorological parameters provoke spikes in the development of the leading class of factors related to the complex of natural processes. A map of the key sector of the studied region is drawn to spatially visualize the structure of valley landscapes of the middle Ob region. Erosion processes are observed at the initiative station called “Ust-Vakhsky”. Within the sector of the station, the maximum bank recession rate measured by Tymen complex geological survey expedition in 1988 is 25 m/year, and the long-term average is 5.26 m/year (1983-1994). Long-term average annual bank recession rate by monitored cross section over 2002 - 2018 is 2.9 m/year. The maximum bank recession rate measured in 2004 is 17.5 m/year at the fifth cross section.
Landscape and mapping support of regional geoecological analysis
Authors: Kuznetsova T I , Lopatkin D A 
Published: November 2019

Abstract
The aim of the study was to develop a methodology for geographic synthesis of knowledge based on the polygeosystem concept and the idea of interpretative landscape-ecological mapping using GIS technologies, ranging from the study of general principles and logic of research to solving specific problems of geographic information mapping. The mapping strategy is to display the natural landscape as a complex of human living conditions in comparison with anthropogenic impact and possible consequences. The methodology for creating an outfit of landscape maps represents a combination of traditional mapping methods and geo-information methods for organizing thematic spatial data and their modification using GIS technologies. The basic principle of the creation of the cartographic information system (CIS) is the principle of complexity, which presupposes the existence of a system of landscape classification that is uniform for all thematic electronic layers of the CIS, and which can combine their natural and anthropogenic components. Such an approach provides a means of presenting a series of conjugated landscape-ecological interpretation maps of the Baikal region in the form of a holistic CIS consisting of an outfit of thematic layers, united by a common concept and created on a single landscape basis.
Ecological and economic balance modeling for regional multifunctional sustainable forest management
Authors: Makar S V 
Published: November 2019

Abstract
Balance as a principle of long-term sustainable development is considered in the context of forest management results in Russian regions (forest industry production) in comparison with results of carbon storage of forest ecosystems. These results reflect two main functions of forest potential: socio-economic (consumer) and socio-natural (carbon depositing). Considering various quantitative and qualitative aspects of their relevance, the latter should be recognized as an emphasis. Five concepts characterize effects of forests ecosystem function. To determine the value of carbon stocks used, two variants of income function in the regional ecological and economic system are considered. The models were approved using regions typology adapted for state forest management purposes according to the criteria of forest cover and development. In each group, representing a separate type of regions (multi-forest, medium-forest, low-forest and underdeveloped), new spatial configurations were formed, which indicated fundamental differences in carbon cost by Russian regions. Calculations make it possible to justify charges introduction for carbon stocks consumption in the region and differentiation of fee rates. Modelling allows to substantiate imperative of compliance with ecological and economic balance between deforestation (timber harvesting) and carbon storage. The study results provide a basis for differentiated state policy of forest management based on regional characteristics.
An assessment of environmental flow for modelling the operating conditions of Mongolian hydropower plants in the transboundary basin of the Selenga River
Authors: Nikitin V M , Abasov N V , Osipchuk E N , Berezhnykh T V 
Published: November 2019

Abstract
The decision of Mongolia’s Government to implement the projects for the construction of hydropower plants (HPPs) in the transboundary basin of the Selenga River caused the need to study their possible impact on the Russian part of the basin and Lake Baikal. To assess the impact of planned in Mongolia HPPs on the territory of the Russian Federation (water resources and ecosystem), we have studied the expected changes in the yearly hydrological regimes due to flow regulation. A methodology developed at the Melentiev Energy Systems Institute (MESI) allows integrating various models (hydrological, energy, environmental, etc.) into a single system. We have employed this system to model the parameters of the planned HPPs reservoirs and their regulation modes, as well as the deviations of hydrological regimes of Selenga River due to the HPPs construction from those under natural conditions. The concept of “environmental flow” is used to assess changes in the intra-annual hydrological regime of a river. We determine the boundaries of the environmental flow for each month based on an analysis of a variety of biotic and abiotic restrictions for the entire river bed from the border of the Russian Federation to the Selenga River delta.
Environmental studies and support economic activities in regions the Western-Siberian north
Authors: Popova N B , Ryapolova N L 
Published: November 2019

Abstract
Economic activity in any territory involves compliance with certain environmental parameters. The specialization of economic activity of the West Siberian North is not environmentally safe, as it is mainly associated with oil production. The ecological justification of the impact of activities on the surrounding area is an urgent scientific and practical objective of time. Climatic conditions form ecological stability of natural ecosystems to anthropogenic loads. The numerical values of the elements of heat and moisture turnover are necessary to assess the natural potential of territory. They are parameters required for the analysis and assessment in the environmental regulation of economic activity. The maximum permissible technogenic load, which reflects the degree of impact of activity on natural landscapes, is important. On the basis of the calculated characteristics of heat and moisture supply, the energy equivalents of the maximum permissible technogenic load of the surface layer of air, surface waters and phytocenoses of the studied region are determined. On the basis of the calculations and analysis their latitudinal distribution from South to North in the studied territory is revealed. The results can serve as a basis for environmental regulation of economic activity in order to evaluate the modern and long-term environmental sustainability.
Water-resource substantiation of strategic planning in the regions of the Ob-Irtysh basin
Authors: Rybkina I D 
Published: November 2019

Abstract
The paper substantiates the need to conduct water assessment for the strategic planning documents of the regions, including the elaboration of strategies and the forecasts of long-term socio-economic development of the Russian Federation. In this regard, we present the theoretical and methodological approach and the algorithm of such assessments. The approach is based on the landscape-basin principle of territory organization. On the example of the Ob-Irtysh basin regions, the assessing has revealed water availability in the territories, anthropogenic load, water intensity, water consumption forecast, and prospects for water resources use. They indicate local water shortage in some landscape provinces of Omsk Oblast with a total population of more than 130 thousand people. Within the boundaries of river basins, we have estimated the anthropogenic load of low and medium intensity and calculated water intensity of territories (municipal districts), including for different types of economic activity and yearly dynamics. These results have been also a basis for forecasting the prospective use of water resources for drinking, industrial, irrigation and agricultural purposes. Using the forecasts, we have developed scenarios of the water supply of the regions, considering water content (minimum, maximum and average) of the period.
Tree-ring reconstruction of the level of endorheic lakes in the south of West Siberia
Authors: Rygalova N V , Galakhov V P 
Published: November 2019

Abstract
The paper presents the dendrochronological method applied in reconstructing the changes in the water level of endorheic lakes from arid areas (on the example of two large endorheic lakes Kulundinskoye and Chany). Chronologies of annual ring width of Scots pine (Pinus sylvestris L.), growing in the pine belt forests in the south of West Siberia, were used as indicators of climate change. To obtain the longest reconstructions, we used the lengthen chronologies. For analysis, specimens of living trees and old wooden houses in the Altai Krai villages (adjacent to pine-belt forests) were used. Due to the dendrohydrological analysis, we have determined the relationship between the lake level and the radial pine growth. We have revealed a one-two-year lag in the response of hydrological objects to climate fluctuations. Correlation between the tree-ring chronologies and the average annual water level of Lake Kulundinskoye occurred more often due to proximity of both geosystems, i.e. the lake and pine-belt forests. At the same time, there was the best correlation for Lake Chany and the drysteppe chronology Uglovskoye 42_LL. In the course of investigations, we have extended the series for lakes Chany and Kulundinskoye up to 1584 and 1763, respectively. Spectral analysis of the series of the water level in both lakes allowed us to identify common cycles (i.e. 25-26, 40-46 and 80-100-year ones). For Lake Kulundinskoye, the 8 and 11-year cycles turned out to be the most significant. The analysis of secular cycles of hydrological series enabled to specify the trends in water-level changes of the studied lakes in the future.
Sino-Russian Oil Security: Evolution and Structure
Authors: Yang Y , Dong S , Li F , Cheng H , Boldanov T , Liu Q , Li Z , Li Y 
Published: November 2019

Abstract
Sino-Russian oil cooperation is of great significance to Sino-Russian oil security. This research evaluates the evolution pattern of China’s external oil supply risk and Russia’s export risk in 2005-2016 and the impact of Sino-Russian oil cooperation on Sino-Russian oil security. It was obtained: The concentration degree of China’s oil import is gradually decreasing, Russia plays an important role in balancing China’s external oil supply and reducing its concentration. When bringing in oil export potential (OEP), China’s external oil supply risk shows the trend of wavy increase, and the continued declining OEP of Russia increases the risk in a certain degree. When bringing in oil price (OP), China’s external oil risk shows an M-style decrease, and the sanction against Russia by western countries led to cliff drop of OP, which led to sharp fall of risk in the short term. The concentration degree of Russia’s oil export shows a wavy increase. The increasingly important role of China in the Russian oil export market (OEM)exacerbates the concentration degree. When bringing in oil import potential (OIP), Russia’s oil export risk shows an M-style increase, and the positive effect of China’s exuberant OIP has largely counterbalanced the negative effect of the continued declining OIP of other major Russian oil export markets. When bringing in OP, Russia’s oil export risk shows an M-style increase, especially under the sharp fall of OP in recent years, the risk increases dramatically.
Investigation of the optimal modes of electron-beam wire deposition
Authors: Dragunov V K , Goryachkina M V , Gudenko A V , Sliva A P , Shcherbakov A V 
Published: November 2019

Abstract
The paper is devoted to the definition of the minimum electron beam power that is required to obtain stable layer formations during the additive electron beam wire deposition. Correlation between the minimum energy that is needed for stable deposition and the deposition speed has been established. Additionally, the influence of the electron beam oscillation type on geometrical parameters of single layers have been investigated.
Structure and mechanical properties of 09Mn2Si steel surfaced layers and welds modified by adding titanium carbonitride nanoparticles
Authors: Galchenko N K , Samartsev V P , Kolesnikova K A , Vlasov I V , Panin S V , Yakovlev A V 
Published: November 2019

Abstract
The study on structure and mechanical properties of surfaced coatings and welded joints of 09Mn2Si steel formed with the use of a standard electrode as well as one modified by adding titanium carbonitride nanoparticles was carried out. Optical and scanning electron microscopy, microhardness measurement were employed to investigate the structure at welding with a standard electrode, as well as to illustrate changes resulting from the electrode modification through adding titanium carbonitride nanoparticles. Evaluation of mechanical properties was performed by conducting tests on static, cyclic and impact loading. It is shown that welding with the use of the modified electrode gives rise to decreasing the size of ferrite grains and increasing impact toughness and fatigue life.
Digital visualization of thermal processes accompanying welding of small-diameter pipes
Authors: Krektuleva R A , Perovskaya M V , Saraev Y N , Semenchuk V M , Cherepanov R O , Bezginov R O 
Published: November 2019

Abstract
The work investigates the specificity of the thermal processes occurring during formation of a molten pool in curvilinear specimens. The process is exemplified by welding of small-diameter pipes. A numerical 3D-model of the interaction of a moving heating source and thick-walled pipes of various curvature was built. The material, diameter and thickness of pipes were selected as per active standards. The numerical calculations were performed. The practical experiment was performed using argon tungsten-arc welding. The results establish the effect of the welded part geometry on the dynamics of thermal processes in the molten pool.