bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis of the Possibility of Improving the Energy Efficiency of the LNG Shipment System from Large-Capacity Storage Facilities by Upgrading the Design of the Submersible Pump
Authors: Davydenko M I , Yu Baranov A 
Published: February 2022

Abstract
The purpose of the research is to determine the most relevant way to improve the energy efficiency of the liquefied natural gas (LNG) shipment system from large-capacity storage facilities. The analysis of existing LNG shipment systems from storage tanks is carried out to identify critical (emergency) elements of the system that are subject to modernization, and possible options for upgrading structural elements. The work of the LNG shipment system from storage tanks is analysed, the main characteristics of the system are described. Based on the study, a method for improving the energy efficiency of the shipment system was determined – modernization of the design of the LNG submersible pump (LNGSP). The main types of submersible pumps for LNG, as well as types of drives, were studied in order to choose the most optimal option for upgrading CNG shipping systems. The replacement of the electric drive with a hydraulic turbine as part of the LNGSP was chosen as an upgrade. The possible modes of operation of the pumping unit after modernization are analysed. A mathematical description of the main operating modes has been compiled. In the future, it is necessary to calculate the hydraulic turbine in order to determine its geometric parameters.
Problems of Industrial Development and Possible Risks for the Preservation of the Natural Environment of the Altai Republic
Authors: Baylagasov L V , Kapitonova I L 
Published: February 2022

Abstract
In this article are examined possible risks for the preservation of the natural environment of the Altai Republic in the process of industrial development of the region. It is demonstrated, that industry in the Soviet period, including mining, did not have a significant impact on the natural environment. In the 1990s, in the context of the socio-economic crisis, many enterprises ceased their activities. At present, few industrial enterprises, which in terms of production volumes are small and less often medium-sized enterprises, have a local impact on the environment of the region. In the post-Soviet period, in the conditions of democracy and transparency, some projects being implemented and proposed for implementation provoke protests from local residents, including indigenous people. The implementation of some large investment projects in the field of recreational and tourist activities may have an impact on the natural environment of the region and create conflict situations with the local population.
Conditions for the Occurrence of Resonant Oscillations of Vertical Booster Pumping Units
Authors: Tokarev A P , Usmanova A M , Godovskiy D A 
Published: February 2022

Abstract
Features of vibration diagnostics and causes of vibration of vertical booster pump units are considered in the work. On the basis of experimental data and mathematical modeling, the excitation and natural frequencies of vibration characteristic of the pump unit NPV 3600-90-M are determined. It was established that the reverse frequency of the upgraded pump unit in the present case is resonant with its own frequency of the engine-supporting structure system, which is an above-ground part of the equipment under consideration. Taking into account unacceptable limits of ratio of natural and exciting frequencies, optimal range of natural frequency of above-ground part of pump unit is determined.
Predicting Accident Modes in a Gas Pipeline with Incomplete Parameters
Authors: Podvalny S L , Kutsova E V , Vasiljev E M 
Published: February 2022

Abstract
The paper solves the problem of predicting the emergency states of gas pipelines in cases where the initial parameters of the pipeline are not fully known a priori and can change during operation. The coefficient of heat transfer from gas to the external medium and the coefficient of internal viscous friction of hydraulic resistance are considered as such parameters. The theoretical calculation of these coefficients with sufficient accuracy for practice is very difficult due to the significant uncertainty of the actual conditions of heat transfer along the route and the current state of the pipeline. To solve this problem, a mathematical model of a steady gas flow in a pipeline is proposed, which is based on the assumptions about the polytrophic nature of the gas, as well as the non-isentropic and nonadiabatic nature of its flow. Together with the model, a method for identifying undefined coefficients has been developed. The problem of building the corresponding computational procedures with unknown boundary conditions is solved. An analysis of emergency states of a gas pipeline for cases of complete rupture and partial destruction of its wall was carried out by means of numerical modeling. Examples of using the developed model for predicting emergency states of gas pipelines are given.
Verification of the Construction and Architectural Component of the Design of the Fire Protection Regulations
Authors: Zvyagintseva A V , Sazonova S A , Sysoev D V 
Published: February 2022

Abstract
A systematic study of compliance with the planning standards of the construction and architectural component of the design of fire protection regulation according to the basic indicators that ensure fire resistance and fire safety of the building has been carried out. Detailed audit was conducted to verify evacuation routes and passages at the facility to the fire protection regulations. A detailed audit on the verification of protective barriers against smoke to the fire protection regulations has been implemented. Verification studies are implemented on a specific object. The required degree of fire resistance of the objects of various functionality has been fixed. The survey of compliance of building structures, evacuation routes and passageways, smoke barriers with regulations and guarantees of fire protection have been presented. It is established that the required degree of fire resistance of a multifunctional shopping and office center depends on the height of the building and the maximum floor area of all its parts of various functional fire hazards. During the compliance check of the multifunctional shopping and office center, violations of the requirements of norms and rules on fire safety were revealed.
About the Influence of the Neotectonic Movements on the Placement of Oil and Gas Deposits in the Difficult Mining and Geological Conditions of the Nepa-Botuoba Anteclise
Authors: Sevostyanova R F , Sitnikov V S 
Published: February 2022

Abstract
The Nepa-Botuoba anteclise is one of the unique territories within the ancient Siberian platform. At present, after more than half a century of oil and gas exploration, the territory of the Nepa-Botuoba petroleum area under consideration, with a comparative assessment of the oil and gas potential of the sedimentary cover of the Lena-Tunguska petroleum province, which covers the predominant part of the Siberian platform, is unambiguously distinguished as one of the petroleum region richest in hydrocarbons raw materials. This article examines the neotectonics of the territory of the Nepa-Botuoba anteclise, provides information on the structure of the sedimentary cover. A brief description of the methodological approach is given, aimed at optimizing the methodology of oil and gas exploration in the conditions of the study area.
Features Accumulation of Heavy Metals in the Bottom Sediments of Small Rivers
Authors: Muravyeva E V , Maslennikova N N , Gibadulina I I 
Published: February 2022

Abstract
The article considers one of the aspects of anthropogenic impact on river ecosystems – the accumulation of pollutants in bottom sediments. The authors analyze the state of small rivers, the study of which is not given enough attention, while their importance for maintaining the ecological well-being of local territories and the formation of their biological diversity can hardly be overestimated. The bottom sediments of two rivers (according to V.L. Rokhmistrov’s classification - the smallest and small) are being investigated for the content of heavy metal ions; the granulometric composition of sediments and the content of organic matter in them are also determined. The results of the study indicate the presence of some regularities in the distribution of certain metals in bottom sediments of the river core, heavy pollution of sediments with mobile forms of heavy metals and their possible impact on the ecological state of its own drainage basin and the state of the large river fed by them.
Local Wastewater Treatment Plant for Dairy Production: Challenges and Solutions
Authors: Vasina A I , Basamykina A N 
Published: February 2022

Abstract
Main factors that can negatively affect the operation of wastewater treatment plant for dairy production were identified. The main negative factors are: low automation of the process, high concentrations of chemical reagents that have a detrimental effect on the biological treatment stage, temporary fluctuations in pH values, insufficient amount of dissolved oxygen at the biological treatment stage. One of the main operation problems of local dairy wastewater treatment plant is a fluctuation of pH value over a wide range, especially at treatment plants of small enterprises. Biological treatment methods were considered as one of the most suitable technologies for the removal of organic substances from dairy wastewater. It was concluded that there are quite stringent conditions for each treatment stage. The pH range is almost neutral and fluctuate within 6-8.5. The average temperature of wastewater should be 20-30°C for optimal biochemical reactions. The concentration of dissolved oxygen plays an overriding concern for biological treatment stage, since good operation of processes of nitrification, denitrification and biological phosphorus removal are based on this indicator and will not proceed in case of deviations from the normal.
Engineering and Technical Solutions for Ensuring Security at Social Facilities
Authors: Zvyagintseva A V , Sazonova S A , Zaitsev A M 
Published: February 2022

Abstract
Engineering and technical solutions to ensure fire safety of the building and protection of people by deterministic factors have been installed. The object of research is a building of public social purpose. Constructive and planning solutions for preventing the spread of fire in the building of an object of class K0 for fire danger are diagnosed. The enclosing structures of the room must have a fire resistance index of at least REI 150. Technical solutions for evacuation routes and passageways, equipment that guarantees reliable protection from fires, communication in the building, ensuring procedures that implement the effective functioning of the fire Department to eliminate the source of fire have been formulated. Technical solutions for fire protection and communication systems of the building are justified in detail. Compensating measures are recommended for public buildings with an excess of the standard height and in the presence of six underground floors. It is specifically recommended to increase the fire resistance limits of load-bearing structures, stiffness cores – stair and elevator nodes and fire barriers to R/REI 180 and to provide the building with a type 5 warning system.
Similarity Theory when Selecting the Test Fire Parameters During Commissioning Tests of the System of Smoke Ventilation at a Closed Car Park
Authors: Sverdlov A V , Volkov M A , Rykov S V , Kudryavtseva I V 
Published: February 2022

Abstract
Fire protection of closed car parks, where it is possible to have a massive stay of people, is the most important and most crucial task when designing such facilities. The efficiency and effectiveness of smoke ventilation systems is achieved through compliance with design rules and numerical simulation of air distribution. The most reliable method is an experimental check of the efficiency of smoke ventilation. It is not possible to reproduce a real fire in the conditions of an object without damaging the structures of a building or a facility; therefore, tests are carried out with reduced, safe fire parameters. Based on the similarity theory, the article discusses the methodology for scaling test fire parameters and smoke ventilation parameters, which allows obtaining results relevant to the design fire parameters. In this case, the positive test results with lower parameters of the test fire confirm the design limits of the smoke distribution and the possibility of evacuating people from the car park in case of a fire having design parameters. An alternative to these scaling methods can only be the prediction of design test parameters and conditions based on the same calculation method, as well as the case when the prediction of the test results is confirmed by observations.
Anatomical and Morphological Features of the Leaves of Tilia Cordata Mill. As an Indicator of the Adaptive Capabilities of the Species to the Conditions of the Urban Environment
Authors: Gibadulina I I , Larionov M V , Maslennikova N N 
Published: February 2022

Abstract
Study of the anatomical and morphological features of the photosynthetic apparatus of Tilia cordata Mill. showed that the volume of leaf mesophyll cells in an urbanized environment is higher than in natural plantings. The cells of the palisade mesophyll of the leaf have a greater variability of this indicator during the growing season as compared to the cells of the spongy mesophyll. Positive correlations of the indicator of the volume of cells of the palisade mesophyll with the indicator of the air pollution index, the content of phenol, formaldehyde, benzo(a)pyrene and negative correlations with the content of nitrogen dioxide were noted. The indicator of the volume of cells of the leaf spongy mesophyll positively correlates only with the indicator of the atmospheric pollution index and the content of formaldehyde.
Geoecological Assessment of the Degree of Risk of the Fuel and Energy System in the Voronezh region
Authors: Mezhova L A , Zvyagintseva A V , Chertkov P V 
Published: February 2022

Abstract
The article analyzes the negative impact of the regional fuel and energy system (RFES) on the environment of the Voronezh region. It is proposed to improve the monitoring system, taking into account the basic geoecological principles of an integrated approach, the stages of the study, with the definition of regional features, which are based on the assessment of socio-ecological and economic conditions and the efficiency of using information. When placing objects of the regional fuel and energy system, it is necessary to take into account the landscape features of the region. The analysis proved the need for a unified geoecological management system of the regional fuel and energy system. It will strengthen the regime of energy saving, reduce the degree of negative impact and improve technological processes, it will also reduce environmental risks to public health. Comprehensive geoecological monitoring will allow predicting the geoecological situation in the region. The historically developed spatial regional fuel and energy system of the Voronezh Region has a number of disadvantages, so there is the need to modernize equipment and the regulation system.
Some Algorithms of Differential-Ranging Acoustic Positioning System Intended for AUV Group Based on a Particle Filter
Authors: Shcherbatyuk D A 
Published: February 2022

Abstract
The paper considers the problem of providing for Autonomous Underwater Vehicles (AUV) group navigation using an acoustic long-base line (LBL) differential-ranging (DR) positioning system. An algorithm is presented that solving the navigation problem of the DR acoustic positioning system (APS), based on the use of a particle filter (PF). The simulation results are presented using the developed algorithm, proving its effectiveness and capacity for operation.
Information System to Analyze Human Environmental Wellbeing for Assessing and Reducing Technogenic Risk
Authors: Bezborodova O E , Bodin O N , Chuvykin B V 
Published: February 2022

Abstract
The article provides a rationale for the need of developing the information system to analyze human environmental wellbeing (HEW) on the basis of artificial neural networks. The application of artificial neural networks is pre-conditioned by the need of prompt analysis and processing to take decisions on the implementation of environment protection measures for large data arrays accumulated as a result of environmental monitoring. The suggested information system for technogenic risk assessment implements a multi-limit way to control the state of a multi-parametric object and allows assessing human environmental wellbeing in real time. The authors provide structural charts for the information system to assess technogenic risk and the block to process and store information on the basis of an artificial neural network LVQ (Learning Vector Quantization). The authors provide an algorithm and the results for the artificial neural network LVQ training.
About the Role of Digitalization of Agriculture in Reducing the Impact of Climate on the Technological Development of Crop Production
Authors: Akmarov P B , Rysin I I , Knyazeva O P 
Published: February 2022

Abstract
The article presents the generalized results of century-long observations of changes in the yield of grain crops of Udmurtia against the background of climate variation and the development of production technologies. The trends in the development of crop production are revealed and the influence of meteorological indicators on the efficiency of agriculture is proved. The correlations of grain yield with the temperature regime and moisture supply in certain periods of plant growth are considered. It is established that the climatic conditions of plant growth from April to June have the greatest role in the formation of the crop. There is a positive relationship between the yield and the average annual temperature of the previous year. Based on the analysis of time series of meteorological indicators for temperatures and precipitation in the summer period, trend equations are obtained, which prove the regularities of the growth of the average daily temperature and average monthly precipitation over a multi-year interval. A rather significant direct influence on plant growth of the average temperature of April, which determines the intensity of soil processes, has been revealed. At the same time, the existence of cyclic components in changes in temperature and precipitation is confirmed, and the frequency of these cycles is calculated. The tendency of reducing the role of natural factors in the formation of the crop with the use of innovative technologies and digitalization of the industry is proved. The possibilities of applying modern scientific achievements and technical solutions to reduce the role of climatic factors in the production of crop products are shown.
Automation Prospects in Rice Growing
Authors: Sysoev O E , Sysoev E O , Solovev D B 
Published: February 2022

Abstract
This article considers the solution for the automation problem in rice growing. Currently, every seventh resident of the earth is involved in rice growing and processing, and all countries experience insufficiency of labor resources for this work. To solve this problem, the authors suggest using an automated agricultural self-propelled platform (AASPP) that will help completely automate rice growing and solve environmental, economic, social, and infrastructural problems of rural residents. Besides, it can help eliminate many of the technical problems of rice growing, such as the horizontal leveling off the field, corrosion of agricultural machines, complying with agrotechnical standards when planting, and the correlations between the terms of agrotechnological works using machines and mechanisms and soil humidity and other natural conditions. Solving the problem of rice growing automation will help satisfy the needs of this agricultural sector in labor and free 30-50% of people involved in rice growing to be employed in other economic sectors.
Improving the Efficiency of the Tank Farm of the Well Product Preparation System
Authors: Levitin R E , Zakirzakov A G , Pimnev A L 
Published: February 2022

Abstract
The article deals with a set of issues related to the design of a reservoir park for the preparation of well products. In the calculation part, the required capacity was calculated for the selection of the main equipment of the tank farm. Also, the selection of auxiliary equipment of the fleet and the calculation of the proposed option for optimizing the operation of the fleet are carried out. The main technological operations, which are feasible with the help of the selected equipment, are considered. The technical characteristics of the equipment are given.
Modification of Permeability Cube of Geologic and Hydrodynamic Model Under Various Volumes of Input Data
Authors: Krivoshchekov S N , Kochnev A A , Kozyrev N D , Mengaliev A G 
Published: February 2022

Abstract
At any stage of field development, the process of developing and history-matching geologic and hydrodynamic models has many uncertainties. To improve reliability of geologic and hydrodynamic models all the available information shall be used. For undeveloped fields, these are the results of hydrodynamic well tests at the stage of early production, and for fields with a high degree of exploration all the available information shall be objectively integrated. This paper considers various approaches to improvement of geological and hydrodynamic models’ reliability. The authors propose a method of hydrodynamic model history-matching to indicator diagrams results. To refine permeability cube at underexplored fields, it is proposed to history-match the geologic and hydrodynamic model to the results of hydrodynamic tests carried out at exploration stage. For fields with a high degree of exploration, it is proposed to integrate different studies. Linear discriminant analysis was used for this purpose. As a result, this allowed to significantly reduce the model adaptation time and increase its predictive reliability.
Improvement of Hydraulic Facing Technology by Modeling Permeability Formed Cracks for Specific Mining and Geologi-cal Conditions
Authors: Arutyunyan A S , Petrushin E O , Kusova L G 
Published: February 2022

Abstract
The article describes the improvement of hydraulic fracturing technology by modeling the permeability of the formed fractures for specific mining and geological conditions. The description of the main indicators of the properties of the propping material for hydraulic fracturing is given. To prevent undesirable consequences when using various proppants in a number of Russian fields, testing was carried out for the proppant compliance with the ANI RP-56 standard, the results of which are shown in the article. Shown that it can be seen that the type of proppant and its physicochemical characteristics significantly affect the permeability of the hydraulic fracture. Therefore, only after conducting studies to assess the permeability in conditions close to reservoir conditions in the well, it is possible to select the type of proppant for hydraulic fracturing, potentially the most effective for specific mining and geological conditions. Concluded that the correct choice of proppant material for hydraulic fracturing minimizes the percentage of the probability of fracture of the proppant grains in the hydraulic fracture, as well as the removal of proppant grains into the wellbore, which ultimately has a positive effect on the well operation during development and operation in design mode.