bluuebunny/crossref_metadata_2025_split huggingface dataset:
Factors affecting distribution of precious metals in rocks of the South Sopchinsky massif and the ‘Moroshkovoe Lake’ target (southern framing of the Monchegorsk pluton, Kola Peninsula): experience of applying statistical methods
Authors: Miroshnikova Ya A , Martynov E V 
Published: August 2020

Abstract
Three types of vein bodies are developed within the southern framing of the Monchegorsk pluton, in metapyroxenites of the South Sopchinsky massif: 1) plagioclase-pyroxene; 2) quartz-feldspar, and 3) amphibole-plagioclase composition. PGM mineralization is related to sulfide-oxide dissemination in these vein bodies (they are also found in the neighboring ‘Moroshkovoe Lake’ target) and mainly occurs as tellurides, arsenides, bismuthides, and Pt and Pd sulfides. A correlation analysis of non-ferrous and precious metal contents in the veins and metapyroxenites enclosing them was carried out using the Spearman’s rank correlation nonparametric coefficient. It showed an inheterogenous distribution of Cu, Ni, Pt, and Pd in these bodies. In conjunction with geological observations and petrochemical studies, the implementation of this statistical method allowed drawing a conclusion about a possible mechanism of formation of the low-sulfide PGM mineralization in rocks of the South Sopchinsky massif.
Study of sorbents of oil and oil products for emergency oil spills response in the Arctic seas
Authors: Pavlov A , Vasileva Z , Smirnova I 
Published: August 2020

Abstract
The possibility of using sorbents with immobilized microorganisms to eliminate oil spills in the sea in the climatic conditions of the Arctic is investigated.Based on the research results, the appropriateness of using these sorbents was assessed.Studies have also been conducted on the effectiveness of using commercial sorbents for the elimination of oil spills and oil products on the surface of seawater at positive and negative ambient temperatures.
The Kandalaksha-Kolvitsa gabbro-anorthosite complex: Nd-Sr isotope-geochronological evidence of its affinity to the East-Scandinavian Large Igneous Province
Authors: Steshenko E N , Serov P A , Kunakkuzin E L , Ekimova N A , Bayanova T B 
Published: August 2020

Abstract
The article provides new Sm-Nd and Nd-Sr isotope-geochronological data on rocks of the Paleoproterozoic Kandalaksha-Kolvitsa gabbro-anorthosite complex. The isotope Sm-Nd dating on metamorphic minerals (apatite, garnet, sulfide) and rock of the Kolvitsa massif yielded the age of 1887±37 Ma (high-temperature metasomatic transformation) and 1692±71 Ma (regional fluid processing). The model Sm-Nd age of metagabbro is 3.3 Ga with a negative value of εNd=-5.5, which indicates processes of crustal contamination or primary enriched mantle reservoir of initial magmas. According to geochronological and Nd-Sr isotope data, rocks of the Kandalaksha-Kolvitsa complex seem to have a common anomalous mantle source with Paleoproterozoic layered intrusions in the Baltic Shield.
Perspectives for Asian countries for entering into Oil and Gas assets of Sakhalin island Shelf and Arctic shelf of Russia
Authors: Volodichev K 
Published: August 2020

Abstract
The article is devoted to the analysis of the participation of foreign companies in the development of oil and gas projects in the Russian Federation from both a historical and current point of view. The article clearly outlines the basics of the history of the development of the oil industry in the Russian Federation, the experience of involving foreign partners, both from around the World and from Asian countries, in particular, special attention is made to the prospects for Asian countries on joining oil and gas projects offshore Sakhalin island and the Arctic shelf of the Russian Federation, state policy of the Russian Federation and the current geopolitical situation in the World.
Arctic LNG cluster: new opportunities or new treats?
Authors: Razmanova Svetlana , Steblyanskaya Alina 
Published: August 2020

Abstract
Construction and further operation of the “Nord stream”, “Nord stream 2” and “Power of Siberia” gas pipelines are a crucial element in the development of cooperation between Russia, the EU and China in the gas sector. Nevertheless, the Russian Federation considers not only gas exports via pipelines but also the supply of liquefied natural gas (further-LNG) as a priority area in the regional markets. Nowadays, the LNG market is a derivative of the traditional gas market and has certain competitive advantages over pipeline gas supplies. Many countries, including the Russian Federation, are trying to consolidate their positions in the relatively new and growing LNG market. In the Paper, the Authors consider the main Russian LNG project’s strength and weaknesses. At the same time, there are several of specific problems that need to be taken into account in the development of Arctic hydrocarbon reserves. The creation of an LNG cluster with an annual capacity of up to 140 million tons on the territory of the Yamal-Nenets Autonomous district is associated with significant risks. Among the most crucial risks are: competition for the LNG market share in the EU and Asia-Pacific countries started between the US and Russia, as well as Australian, Indonesian and Middle Eastern companies; significant volatility in energy prices on the World markets, and in particular in the EU and Asia-Pacific markets; high cost of Russian LNG projects and their limited funding under sanctions restrictions.
Pt-bearing Fedorovo-Pansky Layered Complex (Kola Peninsula): Sm-Nd geochronology and Nd-Sr characteristics
Authors: Serov P A 
Published: August 2020

Abstract
Results of isotope-geochronological Sm-Nd studies of the Paleoproterozoic platiniferous Fedorovo-Pansky layered intrusive are presented. Implementation of a complex of isotope-geochemical methods (Sm-Nd, U-Pb, Rb-Sr) allowed a more reliable and precise study of the age, formation patterns, and conditions of ore substance localization in the major units of the complex, i.e., the Fedorova Tundra and Kievey deposits. Geological, mineralogical, and isotope-geochronological data combined facilitate the identification of three ore-magmatic systems within the Fedorovo-Pansky ore area: 1) early troctolite-gabbronorite (2526-2507 Ma); 2) major ore-bearing norite-gabbronorite-anorthosite (2502-2470 Ma); 3) anorthosite (2447 Ma). The main industrial PGE mineralization of the Fedorovo-Pansky ore area is related to the norite-gabbronorite-anorthosite ore-magmatic system with the age of 2500-2470 Ma. Analysis of Sm-Nd model ages for the Fedorova Tundra (2.9 - 3.4 Ma) and West-Pana (2.8 - 3.1 Ma) blocks of the complex indicated that the age range for the Fedorova Tundra intrusive chamber is inclined to more ancient ages, which is confirmed by geological observations of individual intrusive chambers of the complex blocks.
Elderly families of indigenous peoples of the Arctic in the sociological dimension
Authors: Barashkova K D 
Published: August 2020

AbstractThe increasing share of older people in the demographic structure of society, the increasing instability of family and marriage relations, the transformation of the traditional family model in the context of global social and natural changes – this is not a complete list of factors that affect the institution of the family. The phenomenon of old age, including the elderly family, is a complex ideological problem of the value of life.Demographic aging requires a special infrastructure focused on meeting the social needs of people over 65 years of age. Such modernizations primarily concern the sphere of health and social services. Together with various types of social services, conditions are created that ensure the active longevity of elderly citizens. Family development is based on the social and personal needs of a person. In modern Russia, there is instability and transformation of family relations, which, in our opinion, is an indicator of crisis phenomena in its development, as well as institutional changes. Statistics for 2018 in Russia show that 65 % of marriage relationships have broken up, whereas 70 years ago, divorce was rare. And the forecast is quite negative, under such circumstances, there will be more and more divorces every year. And all the more valuable is the role of families who have a long family history and life experience. Their accumulated family values, proven over time, can help strengthen the institution of the family, preserve its significance for society and the individual, especially in the harsh conditions of life in the Arctic, when mutual assistance and mutual support becomes even more meaningful for a person.
The concept of social justice in the economy of traditional households of the Kola Peninsula
Authors: Ivanova M , Shabalina O , Kazakova K 
Published: August 2020

Abstract
The article is based on the analysis of ethnographic literature of the late 19th – early 20th centuries, folklore and archival sources and examines the historical and cultural context and the current existence of a specific subjective concept of social justice in the economy of a traditional household, historically formed by the local Arctic population – the Sámi of the Kola Peninsula. When thinking on this concept, criteria of strict equality in distribution, productivity and principles of satisfaction of needs were identified. It is noted that in the conditions of the state colonization policy of the Murmansk coast of the Kola Peninsula, starting with 1860, the region initiated new economic relations, governed by the norms of all-Russian legislation and “colonization” legal acts prepared speculatively, without taking into account the specific rights of the indigenous people. By the example of analysis of archival sources deposited in the funds of the State Archive of the Murmansk region, it is shown that in 1870-1871 in the case of legal way of upholding their ideas about social justice in the process of resolving possessory conflicts the Sámi of the Kola-Lopar district had declarative justice on their side, unlike the colonists though they had state resettlement privileges.
Features of summer ice-edge bloom in the Barents sea
Authors: Druzhkova E I , Ishkulova T G , Pastukhov I A 
Published: August 2020

Abstract
The paper is devoted to the study of hydrochemical complex and pelagic phytocene in the ice-edge area of the Barents sea during summer. The peak of ice-edge area phytoplankton bloom with a characteristic set of biomass values and complex of dominant species was recorded in the course of the study in the surface layer zone of drifting ice. At the same time in sub-surface horizons diatom transition to the stage of sporulation and mass development of nanoalgae, which is characteristic of seasonal oligotrophy was observed. Based on these data, quite a relevant supposition concerning the intensive development of ice-edge blooming under the solid ice cover off the north of the area studied could be made. To the south of the ice edge area the dominance in the phytoplankton community is shifted: nanoforms occupy a leading position in the community in numbers and biomass compared to microalgae, the composition of the lattest is completely replaced by the summer forms of dinoflagellates. The distribution of silicon and nitrogen consumed in euphotic layer, is fully consistent with the biomass and the number of microphytoplankton – a decrease of these parameters off the north, from the station located in the ice edge towards the south is observed. The maximum depletion of phosphates corresponds well with the area of active proliferation of nanophytoplankton in the southern part of the study area.
Estimation of pine forest timber volume in the European part of Russia’s Subarctic region: Evidence from the Kola Peninsula recovering from catastrophic disturbances
Authors: Evdokimov A S , Pankratova I V , Ruschina E A , Shamrov I I , Yandovka L F 
Published: August 2020

Abstract
The study provides a comparative assessment of the volume of pine forests growing in the European part of the Subarctic region of the Russian Federation (the Kola Peninsula). This characteristic is one of the most important indicators in the forest inventory during the economic assessment of forest stands. The study considers forest communities at various stages of recovery after catastrophic disturbances with a special focus on forest cutting and forest fires. These catastrophic violations are of a different nature when exposed to elements of the forest ecosystem. Therefore, it can be assumed that different communities may experience differences in the estimated characteristics in the process of staged recovery. An alternative hypothesis of this study is the assumption that a comparative assessment of timber volume will vary between communities with different types of catastrophic disturbances (cutting and forest fire) at least in the early stages of recovery.
Optimization of mass-transfer processes of fish convective dehydration
Authors: Ershov M A , Ershov A M , Selyakov I Y , Ereshchenko V V 
Published: August 2020

Abstract
This article presents the efficiency considerations of the dehydration process in production of dried and cold-smoked fish. Fish loses its moisture more intensively at the stage of constant dehydration rate, then at the stage of drying rate decline the intensity of moisture removal decreases. The task of this research is to design the technology allowing the effective moisture removal not only during the stage of constant dehydration rate, but also during the stage of drying rate decline. During the dehydration the moisture of macro- and microcapillaries of the near-surface area of fish disappear from the product with the most and constant rate. As a result of this phenomenon, a dry area with low moisture conductivity features appear near the surface. The dehydration may be turned to the phase of active moisture transfer, if the crust is removed by refilling the capillaries of the dehydrated area with the remained moisture from inside the product. The suggested method involves looped processes of drying and relaxation of the material at the stage of drying rate decline. The dehydration and eigen relaxation of the material occur on every linear element of transfer. The relaxation of the dehydrated near-surface area is caused from entering the internal moisture of the product in that area. On the next interval of the moisture content change, the product enters the dehydration process with high conductivity features in its all parts again. The calculation method for the beginning of relaxation regime in the dehydration process has been advised. The beginning should align with the time of the second critical point appearing on the kinetics curve of fish dehydration. According to the proposed technology of producing smoked fish, the electricity consumption decreases by 8 – 12 % in comparison with the traditional technology at the same process duration.
Cryoextrusion in technologies for processing aquatic biological resources
Authors: Golubeva O A , Titova S A , Malaeva A V 
Published: August 2020

Abstract
The Murmansk region is a coastal region and an integral part of the Arctic economic zone of Russia with its unique geographical location. The development of the regional fishing industry reaches a high level, which makes it possible to fully use the entire range of hydrobionts both for food and forage purposes. Freezing is used as a way to preserve such products in the conditions of fish processing enterprises and fishing vessels in order to improve the safety of proteins, vitamins and minerals in the composition of extracted marine products. To involve in the processing of certain types of raw materials that are difficult to traditional cutting and grinding in thawed form (small fish raw materials, secondary fish raw materials, including waste from cutting fish-heads, gills, vertebrae, trimmings), as well as for algae, it seems rational to carry out technological processes for their processing (including grinding) in conditions of negative temperatures, preventing the phase transition of moisture into a liquid state. Due to grinding in the final product (semi-finished product, minced mass), the availability of nutrients increases. Grinding using the cryoextrusion method, that is, pressing frozen raw materials through a die with holes of a certain diameter, which is based on the cutting ability of intracellular and intercellular ice, allows you to eliminate moisture and nutrient losses, reduce the time and energy costs of defrosting. The semi-finished product obtained by cryoextrusion can be stored for a long time in a frozen state or used to produce a finished product.
Development and creation of an innovative scientific and educational cluster for the integrated use of coal and its products
Authors: Murko V I , Protopopov E V , Temlyantsev M V , Chaplyigin V V , Litvinov Yu A , Volkov M A 
Published: August 2020

Abstract
The article proposes to implement a cluster approach to training, development and creation of high-tech industries in the field of processing of coal raw materials with obtaining end products with high added value. The main technological processes used are: preparation and burning of coal water slurry, based the finely dispersed coal preparation waste as well, liquefaction of demineralized coal and coal slime using a complex of high-energy influences (cavitation, ultrasonic and electric pulse), processing of waste from coal processing plants, bottom ash wastes as a basis for filling mixtures in the dead underground workings and open-pit mines. The implementation of the proposed cluster approach will allow the current scientific and practical problems facing the region in the field of coal mining and processing to be solved.
Functional status technological equipments modelling
Authors: Makarov G V , Tamarkina E V , Lyakhovets M V , Salamatin A S 
Published: August 2020

Abstract
The paper deals with the modeling of the functional states of technological equipment that receive logical values “0” and “1” depending on the combination of input and output signals. The following functional states are possible: “Work”, “Ready”, “Not ready”, “Fault”. Model development these states and their minimization are possible by various methods, for example, with the help of Karnaugh maps, terminal machines, etc. The model variant for the simplest unit, obtained with the help of Karnaugh maps method, is presented. The application of this type of models is necessary for the typification of technological equipments, can be used to create logical control systems and integration into digital twins of complex production.
Technology for producing high-quality manganese concentrates from ferromanganese concretions and polymetallic manganese-containing ores
Authors: Nokhrina O I , Rozhikhina I D , Proshunin I E 
Published: August 2020

Abstract
The results of studies of ferromanganese concretions enrichment using various solvents are presented. Universal technologies were proposed for processing manganese raw materials, including its autoclave leaching with aqueous solutions of chlorides, which allow manganese to be extracted into solution from compounds of various oxide and carbonate forms. Manganese recovery is over 90%. The introduction of ferrous manganese concretions into the chlorine-calcium enrichment process allows the extraction of manganese to be increased by 2.3, cobalt by 3.2, and nickel by 2.5 times. The leaching of ferromanganese concretions by aqueous solution of hydrochloric acid with the neutralization of its excessive concentration by the introduction of carbonate manganese ore makes it possible to extract non-ferrous metals in the solution of 99.80 – 99.88% and up to 95.4% Mn. As a result of enrichment, manganese, copper-nickel-cobalt and iron concentrates can be obtained.
Development of methods for calculating the solidification time of castings and ingots in metal mold
Authors: Deev V B , Prikhodko O G , Prusov E S , Protopopov E V , Temlyantsev M V , Kutsenko A I , Shunqi Mei , Ri E Kh , Bazlova T A , Smetanyuk S V , Sokorev A A 
Published: August 2020

Abstract
A technique has been developed for calculating the solidification time of castings and ingots in metal form, taking into account not only the thermophysical properties of the casting materials and molds, but also the heat transfer conditions at the “casting – mold” interface, the dissipation of the heat flux from the crystallization front to the heating of the chill mold and into the environment.
New production technology of screw sections by drawing
Authors: Fastykovskii A R , Chinokalov E V , Prudnikov A N , Oskolkova T N 
Published: August 2020

Abstract
The development of engineering and technology necessitates the search for new solutions related to the release of innovative products with high added value, which include long-length cold-worked screw sections. An analysis of the methods for producing long screw profiles is made, as a result of which a new method is proposed that differs from the known methods by the absence of a twisting operation for forming a helical surface. This feature of the new method for producing long screw profiles simplifies the design of the device and reduces energy consumption. The influence of the workpiece diameter and the number of passes of the helical surface on energy consumption was studied, and a comparative schedule was constructed that proves the advantages of the proposed method for producing screw sections by drawing. For the strength analysis of equipment, a dependence is proposed by which the force that occurs when drawing long screw profiles can be found, taking into account the deformation conditions and design features of the device forming the screw surface. Using the fourth theory of strength, a dependence is obtained to determine the condition that guarantees the absence of breaks in the process of drawing a screw profile.
Modelling of conditions of manganese reduction with carbon, silicon and aluminum
Authors: Rybenko I A , Nokhrina O I , Rozhikhina I D , Proshunin I E , Golodova M A 
Published: August 2020

Abstract
The paper contains the research results of the process of manganese oxides reduction by various types of reducers − carbon, silicon and aluminum, the purpose of which is definition of a possibility of the use of carbon-bearing material (coke, silicon carbide), ferrosilicon and aluminum by production of alloys of manganese and direct alloying of steel in a ladle by manganese and definition of optimal conditions of implementation of these processes.
Software and hardware for integrated ACS of casting quality
Authors: Knyazev S V , Usoltsev A A , Skopich D V , Sokolov B M , Oznobikhina N V 
Published: August 2020

Abstract
The implementation of the “Automated system for the operational control of castings production (AS OCCP)” is the first stage and the basis of the integrated automated production control system. It performs three main tasks: control and accounting (the course of production, products, materials, etc.), improvement of the casting quality and the operational control of technological processes. The second stage is based on mathematical processing and analysis of data coming from AS OCCP, which allows the optimal ranges of parameters of technological processes – “Automated system for optimization and analysis of production progress (AS OAPP)” to be determined. AS OAPP consists of two subsystems: quality analysis (QAS) and technology Control (TCS). The first one solves the problems of data analysis and modeling, the second one – real-time calculation of optimal process parameters and forecasting. The tasks of the first and second stages compete for access to different hardware resources. The most critical parameter for the AS OCCP is the performance of the server disk arrays, for the AS OAPP is the processor performance. In both cases, the scaling of the system is effectively solved by parallelizing operations on different servers that make up the cluster, and on different processors (cores) on the same server.