bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Added Value of Products is a Key Factor in the Development of the Forest Industry
Authors: Medvedev S , Mokhirev A , Rjabova T 
Published: February 2022

Abstract
The paper presents the results of a study of certain aspects in improving the efficiency of the Russian forest industry. The purpose of the work was, in addition to identifying these factors, to consider a model for improving the efficiency of the functioning of individual timber enterprises, which has a certain system of restrictions. In the course of the study, the key role of added value in the price of products of forest industry enterprises in increasing efficiency (profitability) both individual goods and the entire timber industry. The general dynamics of the development of enterprises in the industry and the production of the most important types of products is shown. The significant role of the logging industry in the efficiency of the entire timber industry of the country is revealed, and the factors of this influence are shown. One of them is the fluctuation of prices for round timber during the year, the principal model of which is also presented in the work. The study is based on statistical information for the period 2015-2019. and it is based on the results previously obtained by the authors of this work and the scientific research of the country’s leading scientists in the field of the economy of the forest industry. The resulting system of restrictions to improve the efficiency of LPC enterprises can be used in other industries that use natural resources.
Study of Soil in an Area Affected by a Solid Municipal Waste Landfill
Authors: Begunova L A , Begunov A A 
Published: February 2022

Abstract
The aim of this study is the detailed assessment of the impact of a solid municipal waste landfill on its adjacent land. The contents of heavy metals and some major components in soils at the SMW landfill boundary and in the sanitary protection zone were determined by potentiometry and atomic absorption spectroscopy. It was established that the actual concentration values in soil are significantly higher than the standard limits.
Investigation of the Seabed Profile taking into account the Multiple Scattering Approximation of Radiation
Authors: Kan V A , Sushchenko A A , Lyu E R , Baranchugov I A 
Published: February 2022

Abstract
Based on a mathematical model of acoustic signal propagation in an oscillating medium, an inverse problem is formulated, including the definition of a function describing the deviation of the seabed level from the average given horizontal plane. Solution in the approximation of double scattering from the seabed and by volume in the case of a narrow radiation pattern of the receiving antenna is obtained.
Waste Recycling as a Starting Point Economic Growth of Russia
Authors: Filimonova L , Matys E , Skvortsova N 
Published: February 2022

Abstract
The food program of the Russian Federation contributed to the widespread launch of poultry enterprises, due to which at the present stage the food market is fully provided with poultry products of Russian manufacturers. But, there have been and remain problems with the processing of poultry manure, as a result of which poultry enterprises incur losses in the form of fines for unauthorized storage of poultry waste on land plots not intended for this. Besides the economic threat, chicken droppings are also an environmental threat. The authors of the article formulated the primary measures to solve the listed problems. The principal distinctive feature of the work is the investigated schemes of utilization and processing of organic waste according to the experience of foreign and domestic practitioners. These iterations make it possible to explain the choice of a management decision by the management of the poultry farm in response to the corresponding challenge of the external environment: low value of added value in the production of main types of products; fines for unauthorized storage of waste; reputational local risks of the company associated with production factors of impact on the environment and others. Among such measures, the authors include recycling of poultry waste (chicken droppings) with justification of options for processing and disposal of waste. The alternative approach allows timely flexible response to emerging challenges of the internal and external environment and deterioration of key indicators of business activity of an enterprise - a taxpayer in the region.
On Propulsion-based Estimation of Incoming Flow Velocity
Authors: Kostenko V V , Tolstonogov A Yu 
Published: February 2022

AbstractAUV’s actuators systems are highly affected by external conditions such as incoming flow velocity. The paper aims to estimation of incoming flow velocity based on quasi-steady model of thruster. The work motivation is compensation of incoming flow effect on AUV’s actuators dynamic model for improving actuator control or a velocity estimation in case of velocity sensors absence. The equation for incoming flow velocity estimation is presented. It accounts orientation of thrusters relative to the longitudinal vehicle axis. Thruster parameters identification procedure based on bollard pull tests and marine trials are presented. Comparative results of propulsion-based velocity estimation with DVL data are discussed. Velocity estimation error between methods is less than 0.1 m/s in steady motion and less than 0.2 m/s in transition process.
Self-development and Renewal of Hydrocarbon Resources and Reserves in the Caspian and Black Sea Region
Authors: Guliev I S , Kerimov V Yu , Mustaev R N , Guseinova A B 
Published: February 2022

Abstract
The results of aerospace, seismic and geochemical studies along with monitoring of the Earth degassing at the geophysical laboratories in the region of research are considered. They allow making a conclusion that the hydrocarbons are self-developing and renewable resources. Abundant seepages of oil and gas, dynamics and the mode of natural discharge of the hydrocarbons in the territory of the Caspian and Black Sea Region (CBSR) and in the waters of the Caspian Sea and Black Sea evidence for availability in their depths of the hydrocarbon systems, within which current active fluid dynamic processes providing for the self-development of the hydrocarbon resources and reserves are occurring. Self-development of the hydrocarbons is correlated with the periods of activation of the present-day geodynamic processes accompanied by the solar activity, solar and lunar tides, earthquakes, mud volcanism, sea level fluctuations, and correspondent variations of the electromagnetic fields as well as by the spatial and temporal variations of the gravitational field of the Earth. Therefore, a formed in a natural way continuous “natural process line” engaged in transformation of the subsoil matter into the energetic and chemical raw material is functioning in the territory of the geodynamically active regions, and the oil and gas deposits are generated as the product of functioning of the above line.
Risks Associated with the Implementation of Fishery Development Program in the Far Eastern Federal District
Authors: Saltykov M A , Obraztsova E Yu , Bubnovskaya T V 
Published: February 2022

Abstract
The development strategy for the fisheries industry in Russia up to 2030 stipulates a number of projects aiming to fill the national market with quality fish products and ensure the sustainable development of fishery companies in the key fishing regions. Every project has target indicators, a set of actions to achieve the strategic goals and the expected results. Besides, projects are vulnerable to some risks that prevent the achievement of the desired goals. Thus, the assessment of plausible risks and implementation barriers for strategic actions allows for the early-stage forecasting of the situation development, adjusting strategy implementation, and minimizing the deviation from target indicator values. This article presents the discussion of the results of the preliminary analysis of risks affecting the implementation and goal achievement of the Development Strategy for the Fisheries Industry in Russia up to 2030 in the Far Eastern Federal District as one of the key fish producers. To analyze the risks, we used the expert risk assessment method that helped identify the key risks in the fisheries industry development projects.
Calculation of the Pump-Ejecting Systems Characteristics for SWAG Injection Using Flue Gas
Authors: Gorbyleva Y A , Drozdov A N 
Published: February 2022

Abstract
This paper is devoted to determining the main technological parameters of pump-ejecting systems for exhaust (flue) gases utilization. The possibility of using exhaust gases from electric generating gas turbines and gas piston units built near oil fields is considered. We calculate pressure distribution in water supply lines and injection wells during water-gas mixture injection, determine the values of the required pressure at the outlet of the pump and ejector systems and the main characteristics of pump-ejecting systems, and select multistage electric centrifugal pumps and liquid-gas ejectors.
Environmental Safety of Biosphere
Authors: Babaeva A A , Grigorieva E V 
Published: February 2022

Abstract
The present paper researches the matter of human impact on atmosphere that is currently the focus object of specialists and environment researchers all over the World. And it is not a coincidence as the most significant environmental problems of today - the “greenhouse effect”, ozone layer depletion, acid rains are in relation with the anthropogenic pollution of atmosphere. The paper also touches upon the impact of atmosphere pollution on human health and environment. There are considered various means of pollution – from direct and immediate threats (smog, etc.) to slow and gradual destruction of various organism life support systems. In many cases air pollution erodes ecosystem structural components to a degree when regulatory processes are unable to restore the initial state that causes homeostasis mechanism failure.
Design of an Infological Model for Prediction of Problems during Drilling Using Machine Learning and Systems Analysis
Authors: Zolkin A L , Munister V D , Faizullin R V , Smoktal N N 
Published: February 2022

Abstract
The article deals with the actual problem of identification of probabilistic processes as a result of the operation of drilling rigs in the oil industry. The world experience of finding ways to solve optimal forecasting tools using machine learning is summarized. Mnemonic rule for the implementation of classification and ranking systems in the detection of feedbacks as probable indicators of complications of ongoing technological processes is implemented through the description of the formal model of the drilling process in form of a hidden Markov model. The results of evaluation of the developed mathematical apparatus in the form of predictive analytics and a cut of basic complications in the drilling process are presented. An infological diagram of the developed architectural solution of the analysis project is proposed. The results of the control algorithms formalization are given in conclusion. These results allow to ensure the effective procees modes of equipment operation and make it possible to save electricity and water.
Analysis and Application of Capillary Pressure Data
Authors: Kopytov A G , Levkovich S V , Levitina E E 
Published: February 2022

Abstract
The article proposes a method for determining the water saturation of oil and gas reservoirs based on the use of typical capillary pressure curves. There is a relationship between capillary pressure and water saturation, which consists in the fact that residual water is retained in the pore, hydrocarbon-saturated space of the reservoir due to capillary forces. Based on the results of a laboratory study of 75 core samples, typical capillary pressure curves were constructed. Using these curves, it is possible to determine such reservoir parameters as: residual water saturation, water saturation at a given distance from the OWC and others. Knowledge of these parameters will improve the control and regulation of the development of oil and gas fields.
On the Issue of Calculating the Magnitude of the Potential Fire Risk of Emergencies on Gas Distribution Networks
Authors: Glukhanov A S 
Published: February 2022

Abstract
An approach is proposed to determine the value of the conditional probability of human injury at a certain point of the territory as a result of the implementation of any scenario for the development of fire-hazardous situations on gas distribution networks associated with their rupture and subsequent gas ignition. Based on the analysis of the causes and factors determining the outcomes of accidents, taking into account the peculiarities of technological processes of natural gas transportation, typical accident scenarios are identified. For each scenario, the values of the probability of occurrence of emergency situations are calculated. A method for determining the probability of finding people in the residential area of gas pipelines is proposed.
Parametric Identification of Ruptures in Gas Pipelines
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.
Ecological Assessment of Disturbances in the Landscape Structure of Alluvial Soils of Floodplains Under Technogenesis Influences
Authors: Stepanova L P , Pisareva A V , Bolmat T N , Yelisarov N A 
Published: February 2022

Abstract
The article considers the problem of disturbances in the landscape structure when extracting constructional sand causes the formation of a technogenic relief. The objective of this study was to determine the change in the main fertility indicators for alluvial turf and meadow soils disturbed by open-pit mining and building communications. The study included tasks stated below. The research tasks included identifying the quantitative changes in the composition and properties of alluvial soils disturbed by construction sand extraction. Determination of the change in the organic matter content of the upper layer in the artificial soil-like formations (technozems) in comparison with undisturbed soils. Specifying the nature of changes in the texture of the humus horizon of donor soils and technozems bulk layers. Determination of the change in the pH of the aqueous extract, and the content of the accessible forms of K2O and P2O5 in the soils disturbed by mining. The objects of the study were: plots of agricultural land with soil samples of alluvial turf and alluvial meadow soils, sampled at a depth of 0-20 cm. In the floodplain zone, the research was conducted on soils with a disturbance within the upper 50 cm thickness on alluvial turf soil. Technozem, an artificial soil-like structure consisting of one bulk layer of technogenic soil, was studied in the central floodplain. The studies found that open-pit mining has an impact on the composition and properties of alluvial soils. Disturbances in the landscape structure at open-pit mining cause significant destruction of a fertile layer as the soil texture changes. There is also a loss of organic matter in the disturbed soils depending on the degree of manifestation of anthropogenesis.
Ecological Assessment of Non-Target Impact on the Intensity of Human-Induced Changes in Gray Forest Soils
Authors: Stepanova L P , Pisareva A V , Bolmat T N , Yelisarov N A 
Published: February 2022

Abstract
This article presents studies on determining the rate of anthropogenic influences on the gray forest soils sustainability. At present, various pollutants from the atmosphere affect soils. This leads to a decrease in soil fertility, water and air pollution, a decrease in crop yields, and deterioration of product quality. A study of the gray forest soils sustainability to anthropogenic influences incompatible with natural processes is of particular interest to select groups by the degree of anthropogenic transformation. Therefore, the objective of this study was to determine the rate of anthropogenic influences on the grey forest soils sustainability and the degree of their anthropogenic transformation. This requires determining the change in the agrochemical indicators of the fertility of gray forest soils disturbed by overburdened quarrying. Identifying the nature of changes in the texture and micro-aggregate composition of the disturbed soils. Assess the nature of changes in the heavy metals content in gray forest soils of the areas chemically polluted by unauthorized disposal of industrial wastes. Reveal the nature of technogenic load and ecological hazard of industrial waste on the fertile layer of gray forest soils in the chemically polluted area. The research was conducted on an agricultural land site, where soil samples of gray forest soils were extracted. As a result, the gray forest soils’ sustainability to anthropogenic impact, incompatible with natural processes, was assessed. The rates of organic content reduction due to violation of the humus layer were proved. The decrease level of available phosphorus was proved, significant fluctuations for potassium in the soils were revealed. A significant decrease in soil acidity has been confirmed. The influence of chemical pollution of the soil cover by heavy metals has been found out. The intensity of anthropogenic load of industrial waste on the soil depending on the soil contamination levels of heavy metals was revealed.
Shortening Unscheduled Downtime for More Efficient Use of Haul Trucks
Authors: Puzyrevskaya A A , Pogotovkina N S , Gorchakov Yu N , Ovsyannikov V V 
Published: February 2022

Abstract
Unscheduled downtime is one of the factors behind less efficient use of haul trucks in open-pit coal mines. This paper discusses how unscheduled downtime affects fleet utilization, a metric of fleet use efficiency. It analyzes the duration and causes of unscheduled downtime of haul trucks at a coal mining facility. The analysis concludes that 70% of cases of such downtime are caused by natural and climatic phenomena, mainly heavy rainfall. The authors analyze the natural conditions and climate of the area where haul trucks are operated; the paper presents the results of such analysis. It further proposes adjusting the maintenance and repair schedule for weather in order to reduce unscheduled downtime and thus use the fleet more efficiently.
Heat Transfer in Pulsating Laminar Flow in a Pipe: Evaluation of the Reduction in the Heat Exchange Area of Oil Cooler
Authors: Haibullina A I , Hayrullin A R 
Published: February 2022

Abstract
In this study, the heat transfer in a pipe was investigated by a numerical method with the pulsating flow of oil at Reynolds numbers 280, 350, 420. The diameter D of the pipe was 0.014 m. The pipe length was 100D. The flow pulsations were not harmonical. A numerical experiment was carried out using AnsysFluent. Based on the data obtained from the numerical experiment, an estimate of the reduction in the heat exchange area of the oil cooler was calculated. The reduction in the heat exchange area of the oil cooler ranged from 2.57% to 8.63%, depending on the pulsation mode.
Comparative Analysis of the Method for Predicting the Inflow to an Oil Well with a Wavy Profile
Authors: Kolev Zh M , Rogozina T V , Gracheva S K 
Published: February 2022

Abstract
This paper discusses approaches to calculating the productivity of oil wells. Existing solutions do not allow taking into account many important factors, such as, for example, hydraulic resistance in the wellbore, wellbore trajectory, etc. The article presents a developed numerical method for modeling oil flow to an oil well with a complex wellbore trajectory along the productive formation. Based on the function for the point flow potential and the method of hydraulic calculations, an original solution was obtained, which takes into account not only the change in pressure and flow rates for individual sections of the well, but also the hydrodynamic imperfection of the well.
Analysis of Test Results of Titanium Filters for Sand Process Control when Operating Wells
Authors: Shiyan S I , Shabliy I I , Sleptsov A A 
Published: February 2022

Abstract
The article analyzes the results of testing titanium filters to control sand production processes during well operation. It is shown that due to the decrease in the effectiveness of measures to strengthen the bottomhole zone with resins in the conditions of flooded wells, it was decided to carry out experimental work to combat sand production using downhole filters. The results of pilot tests have shown the fundamental possibility of using of anti-sand downhole filters with titanium filter elements (PSTFE) filters as an effective means of controlling sand production in wells, where the reservoir is represented by loose sand without clay material.
Improving Yield of Non-Perennial Crops in the Conditions of Yakutia Using Different Doses of Mineral Fertilizers
Authors: Pestereva E S , Pavlova S A , Aleksandrov N P 
Published: February 2022

Abstract
Providing sustainable feed supplies is the main condition for the high productivity of the livestock industry. Feed supplies shall meet the needs of farm animals. The application effectiveness of mineral fertilizers is one of the most important factors of technology ensuring the improvement of yield, chemical composition, and nutritional value of feed. The article presents the results of research on the effectiveness of different doses of mineral fertilizers used to improve the yield of non-perennial fodder crops in the conditions of Yakutia. Experiments were held in 2015–2016 in the Moydoch plot of the Khangalassky District. Non-perennial fodder crops were sown on June 1. Sowing was done by drilling with 46 cm inter-row spacing for corn and sunflower, 30 cm for oil radish and sudangrass, and 15 cm for millet. The sowing depth was 4–6 cm for non-perennial fodder crops, and 2–3 cm for oil radish. The experience of application of mineral fertilizers to improve the yield of non-perennial crops has shown to primary affecting factors: the first factor — non-perennial crops variety (corn, sunflower, millet, sudangrass, oil radish), the second factor — mineral fertilizer dose (reference, (NPK)90 kg/ha, (NPK)120 kg/ha of primary nutrient). On average during two years of studies, corn crops have shown the highest fresh yield with mineral fertilizers applied at an NPK120 kg/ha dose of 9.7 t/ha; sunflower — 14.6 t/ha, millet — 6.1 t/ha, oil radish — 12.2 t/ha, and sudangrass — 7.6 t/ha with fertilizers applied at an NPK90 kg/ha dose. NPK120 kg/ha dose of mineral fertilizers ensured high nutrient content in the crops of corn, millet, oil radish, and sudangrass, and NPK90 kg/ha for sunflower. Sunflower and oil radish have shown the best nutritional value from all the studied species of non-perennial fodder crops.