bluuebunny/crossref_metadata_2025_split huggingface dataset:
Design and Research of Micro Pile Drilling Rig for UHV Transmission Line in Mountainous Area
Authors: Liu Ruijun , Liu Quan , Liu Fuhai , Tu Lei , Zhang Jixu , Guan Qing 
Published: March 2021

Abstract
In order to comply with the local economic development and reduce the project investment, the UHV line projects are mostly along the hilly areas, and the mountainous areas are mostly difficult to construct. At the same time, the mountainous environment is complex, the traffic is inconvenient, and it is difficult for large machinery to transport to the operation site, which makes the construction of UHV line foundation pile less mechanized, and has always relied on manpower and small tools. With the large-scale development of power grid construction, the problems of labor intensity, poor operation safety and low construction efficiency caused by relying on human construction are increasingly apparent. In view of this kind of problem, the micro pile drilling machine realizes the mechanized construction of micro pile foundation in UHV transmission line project through modular design scheme. Micro pile foundation is a new type of light foundation pile foundation (pile diameter is generally 300-400mm) specially designed for mountainous UHV transmission line engineering. It has the advantages of small pile diameter, small working surface, small hole digging torque, high bearing capacity, and small excavation volume, which is conducive to environmental protection. It is a special equipment suitable for the construction of micro pile foundation under complex mountain conditions.
Design of WZFT Mountain Rig in Mining Industry
Authors: Liu Ruijun , Wang Guigen , Li Yong , Fu Yanlong , Huang Guanglong , Ding Xiaowu 
Published: March 2021

Abstract
With the development of China’s mining industry, in order to promote China’s mineral exploration to the deep to meet the new round of industry demand, mining enterprises on mining machinery and equipment demand is increasingly high, especially drilling, field mining equipment; Improve mining machinery equipment level and efficiency of artificial intelligence is necessary, and can eliminate the safety hidden trouble, the comprehensive implementation of related equipment localization, an urgent need to study to design new functional drill, solution to meet the construction efficiency, reduce the risk of construction personnel safety, reducing the project cost and reduce soil and water loss protect the environment. The mine machinery equipment WZFT designed in this paper is specialized in drilling equipment used for blasting in various mines and drilling holes, and it is produced by Jiangxi Dongrui Machinery Co., LTD., and it is proposed to develop drilling machine in the direction of intelligentization and unmanned in the future.
Technologies for efficient development of hydrocarbon resources on the Arctic and sub-Arctic shelf of Russia
Authors: Dziublo Alexander , Storozheva Anna 
Published: March 2021

Abstract
This article discusses the technical capabilities and results of the application of modern technologies for geological exploration, well drilling, development and operation of offshore oil and gas fields on the Arctic and sub-Arctic shelf of Russia. Based on the scientific and production experience of the authors, analysis of the results of search and exploration in the seas of the Arctic and the Far East, a consistent system of technologies for geological exploration is proposed. The use of such an integrated set made it possible to discover large and unique oil and gas fields in the Barents-Kara region (Medynskoe-more, Dolginskoe, Varandey-more, Kamennomysskoe and others). The features of geophysical work and technologies for achieving high quality seismic material the transition zone (land-sea) in the Ob bay, where due to the presence of permafrost in the upper part of the geological section, there is a significant change in the velocities and absorbing properties of rocks, are shown. Using the example of the Varandey-more field, a technology for integrating 3D deep-sea seismic data and seismic surveys in the land-sea transition zone is described, which made it possible to update the geological model of the field, detail the structural plans of oil-bearing horizons. As a result, after the completion of the interpretation of the survey data in the transit zone, it was recommended to drill an exploration well in the southern part of the field. It has been substantiated that the efficient shelf field exploitation is ensured through the use of new technologies (drilling of long horizontal wells; 4D seismic surveys at the Piltun-Astokhskoye and Lunskoye fields; well designs providing high gas production rates; subsea production at the Kirinskoye field).
Improvement of Design of Diesel Injector Nozzles
Authors: Markov Vladimir , Devyanin Sergey , Kamaltdinov Vyacheslov , Sa Bowen 
Published: March 2021

Abstract
The relevance of the article is explained by the necessity of improving fuel spraying and mixture formation processes in diesel engines. A design of injector nozzles enhancing the quality of the fuel injecting and spraying in diesel engines was proposed. The improvement of these processes is achieved by using a modified nozzle with different lengths of nozzle holes for injectors asymmetrically installed in diesel engines. Experimental studies of a D-245.12S diesel engine equipped with the injector nozzles serially produced and the modified injector nozzles were carried out. The possibility of improving the exhaust gas toxic characteristics of the diesel engine equipped with the modified injector nozzles was demonstrated. The installation of such nozzle in the diesel engine has allowed reducing the emission of nitrogen oxides by 2.1%, of carbon monoxide by 9.5%, and of unburned hydrocarbons by 10.9%, and reducing the average specific effective fuel consumption by 2.5 g/(kW•h), when the engine was operating in the 13-mode cycle ECE R49.
Specialized ecological polygon as one of the tools to reduce pharmaceutical pollution of the environment
Authors: Belov Vladimir , Komandresova Tatyana , Samarkin Alexander 
Published: March 2021

Abstract
The article discusses the problems of pollution of natural objects of the environment by medicines. The main sources of pharmaceutical waste, the causes of their occurrence, as well as the ways of penetration of drugs, the results of their metabolic transformation in the bodies of patients into environmental systems are characteristic. It has been shown that the main suppliers of pharmaceutical waste are medical organizations, chemical and pharmaceutical companies and the population. It is noted that the main channels of penetration of medicines into the environment are wastewater and landfills. Some data on the emergence of pharmaceutical substances in the natural environment are analysed. The composition of the recommendations and measures necessary to reduce the level of environmental risks associated with pollution is described. Particular attention is paid to the Environmental Monitoring Service, which provides laboratory support for environmental monitoring of environmental facilities, including hydro- and geochemical analysis of water, soil and air environment. It is proposed to improve the effectiveness of the environmental monitoring service in view of the degree of impact of controlled drugs on the natural environment by deploying a specialized ecological polygon.
Blended learning as a tool for professional training of specialists for the Arctic region: modern practices in the context of digitalization of education
Authors: Shcherbakova I O , Belozerova N V , Mahmudova T V 
Published: March 2021

Abstract
Blended learning now is becoming a popular technology which combines the traditional methods and tools with modern e-learning strategies. This paper focuses on contemporary approaches applied in the sphere of professional training of specialists for the Arctic and examines the experience of the two leading Universities of Russia which train highly qualified personnel for the Arctic region. In the context of digitalization of education a combination of different elements of electronic information and educational environment has been created and is actively developing. The authors use the official data and methodological documents and describe the latest practices applied in educational process in the context of digitalisation of education. The educational practices presented by the researchers reflect the experience of using the information and training portal “Arctic Safe” created in Saint-Petersburg University of the State Fire Safety Service and show capabilities of the electronic educational environment including distance learning system “FARVATER” which is used in Admiral Makarov State University of Maritime and Inland Shipping. The represented systems provide the students and teachers as well as the administration with the effective tools to organize the educational process.
Improving oil recovery for Arctic offshore oilfields using efficient multifunctional systems
Authors: Naletov V A , Glebov M B , Yu Naletov A 
Published: March 2021

Abstract
This work presents the main properties of multifunctional systems designed for improving oil production for Artic offshore fields. The processes were developed using a system approach to the optimal organization of complex technological objects. This approach employs the principles of general systems theory, which are based on information theory developed by C. Shannon and W. Weaver and can be used to formulate the organization criteria of a technological system with hierarchical structure. This can be applied in technology for creating multifunctional processes with synergistic properties. Technological solutions were designed in order to address a number of important issues associated with the development of offshore oil fields in the Artic region, namely: improving oil recovery, energy saving, environmental problems (problems associated with the conservation of a unique ecosystem) and ensuring the operation of the production platforms. These solutions will allow to solve these problems simultaneously in multifunctional systems that combine power generation modules based on the Brayton and Rankine cycles and modules for carbon dioxide capture. The efficiency of the proposed solution exceeds that of analogous solutions overseas.
Research of the features of the formation of the structure and properties of building composites based on clinker-free binders of alkaline activation with the use of unconditional natural and secondary raw materials
Authors: Salamanova Madina , Murtazaev Said-Alvi , Khubaev Magomed , Gatsaev Zurab 
Published: March 2021

Abstract
The anthropogenic load on the natural resource potential of the planet is growing rapidly. Therefore, special attention is paid to the development of less costly and low energy-consuming technologies for obtaining new building materials. Those materials do not require high-temperature and expensive technological processing, and this will allow the use of local secondary and substandard raw materials. The development of formulations for linker-free binders of alkaline activation based on fine powders of aluminosilicate nature will make it possible to obtain new effective building composites. The work reveals issues related to the theoretical foundations of the structure formation and strength of cement stone based on an alkaline activator. The research results, in our opinion, have a practical importance for the construction industry, since the proposed formulations of clinker-free cements can replace expensive and energy-intensive Portland cement, allowing creating strong and durable concrete and reinforced concrete structures. The results presented in this article were obtained in the framework of research on the implementation of scientific project No. 05. 607.21.0320. “Development of technology for new building composites based on linker-free binders of alkaline activation using substandard natural and secondary raw materials” supported by the Federal Target Program “Research and Development in Priority Areas of Development of the Scientific and Technological Complex of Russia for 2014-2020” The unique identifier for the agreement is RFMTFI60719X0320.
The public administration of the socio-economic development of the Arctic zone based on a stakeholder approach
Authors: Sakharova Swetlana , Avdeeva Irina , Golovina Tatyana , Parakhina Larisa 
Published: March 2021

Abstract
The need to form an effective system of public administration of the Arctic zone socio-economic development is driven by the current processes aimed at the working out of a new Arctic Development Strategy until 2035. This strategy should combine the activities of national projects, government programs, investment projects of state corporations, programs for the development of the Arctic regions and cities. The purpose of this study is to develop theoretical and methodological provisions of the stakeholder approach in the system of public administration of the Arctic development. Scientific novelty consists in the formation of an effective system of public administration, taking into account the specifics of economic and managerial relations with stakeholders, which is aimed at the balanced development of the Arctic. The study presents an assessment of the current state regional policy on the territory of the Arctic zone of the Russian Federation. A model of public administration of its socio-economic development based on a stakeholder approach was developed. Strategic measures of state management of the Arctic were identified on the basis of the regulation of the effects distribution between stakeholders.
Assessment of factors affecting the development and implementation of investment projects in the Russian Federation Arctic Zone
Authors: Babkina Lyudmila , Kozin Mikhail , Skotarenko Oksana 
Published: March 2021

Abstract
The article gives reasons for dividing strategic goals of Arctic Zone socioeconomic development into levels. The first level includes major mid-term goals until 2035, the second one strategic vectors of development or condition goals, and the third one programme goals, including the government programme “Socioeconomic Development of the Russian Federation Arctic Zone”. This hierarchy of goals is based upon a systemic, comprehensive, and programme-goal methodological approach and an analysis of regulatory documents applicable to socioeconomic development of and investment activities in the Russian Federation Arctic Zone. Therefore, any government programme, including the Socioeconomic Development of the Russian Federation Arctic Zone is aimed at achieving major strategic development goals and based on successful implementation of investment projects. The authors have therefore developed and tested a method to assess the importance of factors affecting implementation opportunities and threats (risks) of an investment project. The article contains an assessment of opportunities and threats (risks) caused by small-scale and large-scale external factors and internal factors affecting successful implementation of a company project in the Russian Federation Arctic Zone.
The model of an information system for monitoring remote sensing data of the Arctic region
Authors: Bizyukin Makar , Abrahamyan Gennady 
Published: March 2021

Abstract
The work is aimed at developing a model of an information system for the analysis and monitoring of remote sensing data by the example of processing hyper- and multispectral satellite images, which are widely used to analyze the state of static and dynamic objects in the Arctic region of the Russian Federation. For automatic analysis and decryption of Arctic data in the development of the model, methods of high-performance computing, radiometric calibration, filtering and clustering of images, as well as intelligent data processing methods using deep learning convolutional neural networks were used. Object-oriented design and united modeling language notation were used to develop the model. A data-level model, a conceptual model of the structure of system modules, including a resource storage center, a resource and results management center, and a presentation-level interface have been developed. To develop a diagram of the use cases of the information system, the structure of actors, use cases and their interrelations were identified. The logical model of the information system was created on the basis of a class diagram consisting of the Resource and Results Manager Center, Intellectual Information System, Functional Neural Modules packages. The practical significance of the study is due to the fact that the results obtained will allow the development of a prototype of an information system that can be used for effective monitoring of “useful data” of the Arctic region of the Russian Federation, as well as to automate the processes of analysis, updating, storage and processing of data from objects in various areas of the Arctic infrastructure.
Russia’s geopolitical and socio-economic interests in the Arctic: regulatory issues
Authors: Boldyreva Olga , Ilyin Viktor , Sergeeva Galina , Plesnyakova Vera , Mezinova Olga , Deshin Mikhail 
Published: March 2021

Abstract
This article is a comprehensive analysis of the Arctic legislation of the Russian Federation in the context of the implementation of the main geopolitical and socio-economic interests of the country in the Arctic region. The relevance of the presented research is determined by the need for further development of international legal norms regulating various aspects of the development of the Arctic region, as well as domestic legislation that defines Russia’s strategic interests in the Arctic zone and the competence of state authorities in the implementation of these interests, taking into account the basic principles and provisions of international public and private law and the Constitution of the Russian Federation.
Multi-objective groundwater management using genetic algorithms in Kerbala desert area, Iraq
Authors: Khalaf Rasul M. , Hassan Waqed H. 
Published: March 2021

Abstract
Kerbala desert is one of the most important areas in Iraq, due to the large number of groundwater aquifers in the region. Based on this, many agricultural investment projects have been established in this area recently, with multiple new wells being drilled in the desert. All such wells penetrate the Dammam confined aquifer to a depth of 260 to 300 m, and uncontrolled use of these wells, and the additional wells expected as the area develops, is likely to lead to problems with groundwater sources, including depletion of water levels, well interference, and groundwater pollution. This study introduces a multi objectives groundwater management model based on an integrated simulation-optimisation (S/O) model. The simulation of groundwater flow was developed using a finite-difference numerical model, MODFLOW, under GMS software for various conditions, and evaluation of calibration of the transient model was determined by observing the measured and calculated aquifer heads. A multi-objective optimisation model was applied to maximise the pumping rate and minimise pumping costs, and this was solved using a genetic algorithm method supported by two further mechanisms, Pareto optimality ranking and fitness sharing. A set of Pareto optimal solutions as determined in the final generation was thus created for the multi-objective function (maximum pumping rate and minimum pumping cost) to help decision-makers (DM). Based on the Pareto solutions set, a DM or the designer may thus choose a preferred solution, or a compromise solution may be derived by considering the full set of Pareto optimal solutions.
Experimental Study on Beam-Column Connections of Concrete Encased Cold-formed Steel Beams to Concrete-filled Steel Tube Columns
Authors: Mosheer Khamail Abdul-Mahdi , Dawood M B , Ghalib M H 
Published: March 2021

AbstractExperimental testing was done to investigate the flexural behaviours of internal roof beam-column connections. Four specimens were studied under static loads, one of which was specified as a reference reinforced concrete beam-column connection with regular bars as a conventional reinforcement for beam and column. The other specimens featured cold-formed steel plates with the equivalent area to regular bars as reinforcement, with square steel tube cross-sections filled with concrete used for columns. The results showed an increase in load carrying capacity and toughness for the experimental specimens as compared with conventional reinforcement beam-column connection. The concrete prevented local buckling of the cold-formed steel sections and improved the flexural bending capacity.
Development of a model to estimate concrete compressive strength using ultrasonic testing based on previous models
Authors: Mahmmod Laith Mohammed Ridha , Alameer Sara Alaa Abed , Abdulrasool Abdulrasool Thamer 
Published: March 2021

Abstract
Ultrasonic pulse velocity test is one of the most important non-destructive tests for exploring the essential properties of concrete such as compressive strength. Many previous researchers have examined relationship between ultrasonic pulse velocity and the compressive strength of concrete, developing equations to link these factors; however, comparing the calculated compressive strengths created by applying different equations to the same ultrasonic pulse velocity value, the results are rarely even close. This research aimed to develop new model based on seven such previous equations using a statistical program (Minitab) to calculate the compressive strength of concrete more accurately. The compressive strength thus obtained was equal or very close to the average results obtained from all seven equations, and the results were verified against a dataset of 100 results from ultrasonic pulse velocity test for multi-story concrete building. The obtained results were also compared with the average results from the seven equations used within the experimental program. The comparisons confirmed that, the new model can be used as an alternative approach to calculating compressive strength instead of using all seven equations.
Acoustic and thermal insulation properties of recycled aggregate mortar
Authors: Hussein W Gh Abdul , Al-Sultan A A , Al-Ani F H 
Published: March 2021

Abstract
This study focuses on the design of a lightweight cement mortar with recycled fine aggregates of wood, plastic, and glass. The normal fine aggregate (sand) was replaced with 20%, 40%, and 60% by weight of sand of recycled aggregates, prepared by cleaning wood sawdust, broken plastic, and broken glass with mechanical milling and then using a mill to obtain a similar gradation to that of the sand. The main goal of this paper was to study the effects of using these recycled aggregates on acoustic and thermal properties as compared with those of the reference cement mortar. Acoustic insulation tests were thus carried out on samples with dimensions of 23 × 23 × 0.8 cm prepared for this purpose at the age of 28 days, with three models for each replacement ratio. The acoustic isolation results showed that cement mortar with sawdust at replacement ratios 20%, 40%, and 60% showed better acoustic isolation properties than cement mortar with plastic and glass with the same replacement percentages or ordinary cement mortar. The thermal insulation of the samples was tested in samples with dimensions of 10 × 5 × 2 cm at 28 days. The results for thermal conductivity coefficients were 0.2353 W.m-1K-1, 0.1981 W.m-
1K-1, and 0.1609 W.m-1K-1 for the replacement ratios 20%, 40%, and 60%, respectively. These results show that the cement mortar with sawdust offered less thermal insulation than cement mortar with plastic debris, while cement mortar with crushed glass was even less thermally isolated.