bluuebunny/crossref_metadata_2025_split huggingface dataset:
Pollutant emission from fires at open-pit coal mines
Authors: Murzin M A , Gorlenko N V 
Published: July 2021

Abstract
Existing coal mining technologies are associated with significant pollution of the natural environment, especially atmospheric air. On top of this, in the event of an emergency related to the spontaneous combustion of coal, this negative impact significantly increases. Based on the analysis of statistical data, this work presents a retrospective analysis of the pollutant emission from fires at open-pit coal mines in Eastern Siberia. One such example is the exogenous spontaneous combustion of coal at the Kharanor Open-Pit Coal Mine in 2018. In order to assess the impact of combustion products on the participants in the fire containment, we carried out the calculation of areas exposed to toxic damage by sulfur dioxide. As a result, it was found that an adverse impact on the area of toxic damage caused by the release of sulfur dioxide into the atmosphere from the fire at the Kharanor Open-Pit Coal Mine will be observed in case of inversion and isothermy, since these coefficients of the degree of the atmosphere vertical stability contribute to prolonged stagnation on the ground, prevent dispersion in height, and can lead to acute poisoning of the mine personnel.
Impact of digital transformation and innovation on the development of the fuel and energy complex
Authors: Puzyrny Nicolay , Petrova Zhanna , Povorina Alena , Volkova Elena , Shirokova Victoria 
Published: July 2021

Abstract
As part of the presented work, analysis of the conditions for the transition of the fuel and energy complex to digital and innovative technologies. The work evaluates the energy complex taking into account modern changes and the transition of enterprises to new technologies. At the end of the study, measures are proposed for an effective transition to new technologies.
Outlook of C-substituted benzotriazoles application as corrosive inhibitors
Authors: Vorobyev S V , Barkovskii A A , Koshelev V N 
Published: July 2021

AbstractIn this work the method of the synthesis of C-substituted benzotriazoles is reported. Several target compounds were synthesized from unsubstituted benzotriazole by the diazotation reaction. Quantum-chemical calculations of basic electronic properties of the studied molecules were performed. It was shown, that introducing of halogen atom or thiocyano-group decreases the energies of frontier orbitals.
Multiple regression model for gas consumption in Germany
Authors: Rusev V N , Abramkin G V , Muravyova E K 
Published: July 2021

Abstract
In this paper a mathematical regression model was constructed based on statistical data on natural gas consumption in the Federal Republic of Germany (FRG). Two factors that can influence gas consumption were studied: the country’s population and the average annual temperature. On the basis of the calculations, the importance of these indicators for gas consumption is shown, with the conclusion that the climatic factor is normally distributed. The reliability of the model is high (99.98%).
Reservoir energy management based on the method of multi-tank material balance
Authors: Sidelnikov K A , Tsepelev V P , Ya Kolida A , Faizullin R V 
Published: July 2021

Abstract
To minimize risks according to the current state of reservoir pressure while planning well intervention operations, authors propose the multi-tank material balance method to determine the dynamics of reservoir pressure in the well drainage area. The method is based on using well test results and information on historical production and injection rates. The method is applicable under conditions where number and frequency of well tests are limited.
The influence of heavy metal salts on the electrogenic activity of sludge in biofuel cells
Authors: Zhdanova G O 
Published: July 2021

AbstractThe influence of heavy metal salts (mercury and cadmium chlorides, copper sulfate) on the dynamics of electricity generation by activated sludge of treatment facilities in biofuel cells (BFC) has been studied. It was shown that the compounds under study reduced the electrogenic activity of the sludge when the content in the waste water was from 0.05 g / l. At the indicated concentrations, they significantly reduced the dehydrogenase activity of sludge microorganisms and their total microbial number. With a sequential increase in the concentration of toxicants in wastewater, a sequential decrease in the electrical parameters of the studied BFCs was noted, i.e. the concentration dependence of the studied parameters was observed. This allows us to propose a biofuel cell based on activated sludge as a tool for the primary non-specific assessment of wastewater pollution with heavy metal salts. In addition, on the basis of the obtained ranges of concentrations of metals capable of reducing electrogenesis in BFC, recommendations can be formulated for the parameters of the effluents entering the treatment.
Bioelectrochemical processes of oxidation of dicarboxylic amino acids by strain Micrococcus luteus 1-I in a biofuel cell
Authors: Kuznetsov A V , Khorina N N , Konovalova E Yu , Amsheev D Yu , Ponamoreva O N , Stom D I 
Published: July 2021

Abstract
A facultative anaerobic strain was isolated and studied from the activated sludge of the treatment facilities of a petrochemical enterprise. Its morphological and cultural, physiological and biochemical, tinctorial, molecular genetic characteristics have been investigated. Based on the data obtained, strain 1-I was assigned to the species Micrococcus luteus. The electrogenic activity of this bacterium in BFC was shown using dicarboxylic amino acids - glutamic and aspartic. The open-circuit voltage indices in the BFC with M. luteus 1-I increased in 6 days to 511.5 mV with the addition of aspartic acid, and 419 ± 38.5 mV with the addition of glutamic acid. In this case, the short-circuit current increased to 3.17 ± 0.12 and 1.6 ± 0.14 mA, respectively. The specific power of BFCs based on M. luteus 1-I was the highest with the addition of aspartic acid (40-50 mW / m2 at a current density of 0.15 to 0.4 A / m2). The indicated indicator in a similar BFC with glutamic acid was 26-32 mW / m2 (at a current density of 0.08 to 0.28 A / m2). The oxidation of these compounds by the studied bacterial strain was also confirmed by the methods of cyclic voltammetry.
Two-phase mixture formation in transport diesel engine: the control algorithm and the devise for its implementation
Authors: Ryblov M V , Dubin M D , Ukhanov A P 
Published: July 2021

Abstract
The article reviews the issues dedicated to improving of energy and environmental indicators of automotive machinery by means of two-phase mixture formation in diesel engine. With this method, the 1st phase of mixture formation proceeds at intake stroke by the supply of the certain dose of fuel activator (gasoline, alcohol, biodiesel, etc.) into engine intake manifold, where a mixture of air and activator is formed. The 2nd phase proceeds at compression stroke by the supply of the major dose of diesel oil with the standard fuel supply system into combustion chamber. For the practical implementation of the described method, the diesel engine needs to be equipped with an automatic system for fumigation of air charge. The system contains electronic control unit (ECU), electromagnetic injectors, electric pump and sensors of engine speed and load mode. An algorithm of ECU operation for program control of injectors, supplying activator at the intake stroke, was developed. The sequence of actuation of injectors, coincident with the engine firing order, was substantiated. A formula for calculation of the duration of control pulse supplied to the injectors was derived. The proposed automatic system performs the activator injection, corresponding to the engine firing order, and the exact activator dosage, depending on engine speed and load mode, at the 1st phase of two-phase mixture formation.
Prospects for microwave sintering of the composition from waste of the fuel and energy complex
Authors: Zhenzhurist I A 
Published: July 2021

Abstract
The article considers an option for solving environmental problems associated with high-temperature waste from enterprises of the fuel and energy complex and the metallurgical industry. A technology is proposed for obtaining material from the ash of a thermal power plant, slag waste from metallurgy and a binder from liquid glass by sintering in a microwave field.. Differences in the phase composition, external characteristics and properties of materials obtained by traditional convective firing and sintering in a microwave field are noted. The phase compositions of the fired materials are determined, and the effect of the amount of the amorphous phase on the final properties of the material is noted. The article shows the structures of fractures of materials, shows the difference in the fineness of the structure of the sample based on ash, obtained by convective firing and sintering in the microwave field. Shown amorphous phase between crystalline formations in the structure of the material, marked by X-ray phase analysis. The prospect of microwave sintering of refractory multicomponent compositions in the microwave field to obtain materials is shown.
Modification of the friction surface as a way to increase antifriction
Authors: Roshchin M N , Yu Krivosheev A 
Published: July 2021

Abstract
The paper considers high-temperature tribological tests of carbon-containing materials during friction in a pair with steel 40X13 in the temperature range from +20 to +800 °C in atmospheric conditions. The research results showed that modification of the friction surface of the “Hardcarb-T” material in selenium and polytetrafluoroethylene vapors during friction against steel 40X13 improves the antifriction properties of the friction surface. The spread of values of the coefficient of friction of the material “Hardcarb-T”, treated in vapors of selenium and polytetrafluoroethylene, at a load of 0.5 MPa and a temperature of +500 °C in the speed range 0.05-0.25 m / s is 0.25 … 0.30 thirty. The coefficient of friction of the modified surface at a sliding speed of 0.05 m / s is 21% less than that of the untreated one.
Radiological monitoring of land
Authors: Orekhovskaya A A , Klyosov D N 
Published: July 2021

Abstract
The article considers the results of the radiological monitoring of the land plot of the territory allocated for the construction of the tailings storage facility. In particular, the dose rate of gamma radiation and the flux density of 222Rn were determined. The average dose rate of gamma radiation was 0.11±0.02 mSv/h. The average value of the flow density of 222Rn, in turn, is 43.7±13.1 MBq/m2*s. According to the results of the radiological monitoring, it was found that the values of the studied indicators do not exceed the maximum permissible level – 80 MBq/m2*s and meets the requirements of SanRiN 2.6.1.2523-09 “Radiation safety standards”.
Specifics of application of economic mechanisms to ensure environmental safety in the oil and gas industry
Authors: Chernova I I , Balashova E A , Dolotin A I , Senatorov D V , Kolina A M 
Published: July 2021

Abstract
This article assesses the oil and gas sector in Russia in terms of environmental aspects. This industry has an important meaning for national economy and is one of the most nature-exploiting and “ecologically polluting” industries. Based on the analysis of domestic and foreign scientific works in the field of environmental protection, the lack of a unified approach to solving problems related to the formation and development of new directions in the policy on environmental conservation in terms of the economic component was revealed. The paper shows the peculiarities of application and impact of economic levers in ensuring environmental security in this industry in order to make sound management decisions.
Environmental and economic assessment of damage to atmospheric air from oil and gas production enterprises using the example of the Lena-Tunguska oil and gas province
Authors: Gorlenko N V , Murzin M A 
Published: July 2021

Abstract
The existing global dependence on oil and gas raw materials gives rise to the constant development of new and improvement of existing technologies for the extraction and development of oil and gas fields. The extracted hydrocarbon raw materials are used to meet the needs of industrial production as well as domestic needs, still continuing to negatively affect the environment, forcing to modernize the methods of protection against anthropogenic impact. Today, the extraction of energy resources, especially oil and gas, is the source of about 90% of all types of pollutants emitted into the atmosphere. Due to the low utilization rate of the extracted raw materials, a significant part of them is irretrievably lost and enters the environment as pollutants. According to rough estimates, about 70% of all pollutants are in the atmosphere, with the main sources of air pollution located in the northern hemisphere. The aim of this work is to assess the environmental risk of oil and gas production. It is considered using the example of atmospheric pollution from enterprises in the Lena-Tunguska oil and gas province. We have established that the preparation of facilities at the Yarakta field causes a record damage to the air. The total economic damage to the atmospheric surface layer during construction work on the territories of the surveyed companies amounts to 33.1 thousand rubles.
Environmental sustainability in management: existing conditions and guidance for action
Authors: Abanina E N , Makhonko N I , Levitanus B A , Tarasova E A , Sukhova E A , Plotnikova Yu A 
Published: July 2021

Abstract
In this study, the authors substantiate the need for introducing environmentally sustainable management (as a measure of sustainable development) into the public administration system of a separate state using the example of Russia. For this, the authors analyzed the primary sources that establish the legal framework for sustainable development and sustainable management. The indicators of environmental pollution in dynamics were also studied, the results obtained were critically assessed from the standpoint of determining the causes of the ecological state. Identified internal threats to the formation of environmental sustainability, which generally hinder the achievement of the planned goals of sustainable development. In conclusion, measures are proposed to introduce environmental friendliness into the structure of public administration.
Modern trends in international scientific and technical interaction of the EAEU member states in the process of effective use of natural resources, ecology and environmental protection in the fuel and energy sector
Authors: Diakonova A , Efimtseva T , Mikhailova E , Rakhmatullina O , Salieva R 
Published: July 2021

Abstract
The issues of ensuring sustainable development of the fuel and energy complex are a major task, including within the framework of international cooperation. One of the main problems that must be solved is environmental problems, environmental protection, and protection of natural biodiversity from the functioning of the fuel and energy complex. The solution to these problems is possible through the creation of international scientific and technical cooperation between states. The work analyzed a unified scientific, technical and innovation policy and monitoring its implementation, as well as proposed mechanisms to improve the effectiveness of this policy.
Environmental safety of the territory in the gas station zone
Authors: Sarapulova G I 
Published: July 2021

Abstract
The article deals with the problem of ecological safety and ecological diagnostics of soils in the gas station zone located in the center of the city of Irkutsk. The factors of disruption of natural properties when polluted with oil products have been investigated. The physicochemical parameters of soils, integral indicators of the state have been analyzed, the violation of their natural properties has been revealed, the composition of the surface runoff from the object has been studied. Technogenic halos of oil products spreading outside the source of supply on the basis of GIS were obtained, the accumulation of oil products in the soil up to a distance of 250 m from the filling station was revealed. The results of the dynamic behavior of petroleum products, the methods of ecodiagnostics used can be the basis for determining the direction of the soil distribution of pollutants outside the hazardous facility. The sampling system around fuel stations will make it possible to build GIS maps of technogenic oil pollution fields and develop preventive environmental protection measures. The results obtained are of practical importance for the environmental management of the city, for the cadastral valuation of land, for adjusting the placement of transport routes and the network of gas stations.
Concerning the balance of Nature and production: the local climate evolution in Siberia
Authors: Kolokolov Yu V , Monovskaya A V 
Published: July 2021

Abstract
The paper considers local climate dynamics described by factual observations of local daily temperature and involves both bifurcation analysis and control theory to estimate evolutionary changes. Thus, latent regularities of the local climate changes become visual and it becomes possible to query whether it is possible to restore the balance of Nature and production. The research follows the hypothesis, where the local climate dynamics is associated with the dynamics of the solar energy converter under the astronomically forced competition between hysteresis restrictions and double synchronization (the so-called HDS-control).
Automation of forecasting the number of personnel as the basis of environmental management, on the example of calculations by environmental controllers of enterprises of the fuel and energy complex of Russia
Authors: Stepus A F 
Published: July 2021

Abstract
The study of the methodological basis of environmental management made it possible to identify and identify shortcomings in the current audit system, in terms of the necessary and sufficient number of environmental controllers. It was also not clear how to plan the qualifications of such workers with the same high precision as the number. As a result, after analyzing the various developments of scientists in the field of environmental management, the practical foundations for such planning were identified, namely, the production plan, a breakdown by divisions, taking into account their specific activities (production) and percentages for control by type of work, taking into account the qualification coefficients of labor complexity. Based on the research carried out, a program was developed that allows predicting the number of controllers necessary and sufficient to create an environmental management system and continuous audit. In principle, from the conclusions of the authors, this system can be applied at other enterprises to predict the number of any category and profession of auxiliary workers.
Effects of Active Food Media on Properties of Materials Usedin Local Food Processing Machine
Authors: Olojede M.A. , Ogunkunle O. , Ahmed N. A. 
Published: July 2021

Abstract
Food contains edible biochemical compounds, which serves as sources of nutrients to human being. However, their contamination through processing can bring about adverse effects on humans when consumed. Food blending is one of the major processing done in preparing edible meals. The effect of active food media on the material used in fabricating the grinding shaft of the blending machine cannot be ignored taking into consideration the resultant subsequent effects on blended food. Some of the effects of active food media on metallic parts of food blending machines are protein adhesion, abrasive effect, reduction in mechanical properties and conditions favouring corrosion. Three types of food materials, onion, pepper, and tomato, were chosen to be the focus of this study owing to the prevalence index of their processing amongst the local communities. They were processed using a selected blending machine while the ultimate analyses and determination of elemental compositions were carried out on the processed samples. The mean values of ascorbic acid from four runs of onion, pepper, and tomato samples through a blending machine were found to be 5.94 mg/100ml, 13.13 mg/100ml, and 16.99 mg/100ml, respectively. Some other mineral elements, such as iron, calcium, sodium, potassium and magnesium, were found in varied compositions as the number of blending runs increased. The results obtained showed that these food items contain active ingredients and complex compounds which have gross effect on the mild steel used in fabricating the grinding shaft of the blending machine.
Adaptive perturbation method in quantum mechanics
Authors: Ma Chen-Te 
Published: July 2021

Abstract
The adaptive perturbation chooses a non-standard decomposition. The Hamiltonian becomes a sum of solvable and perturbation parts. We calculate the spectrum using the adaptive perturbation method at the leading-order to compare to numerical solutions. The maximum deviation is around 5% for different coupling regions. A perturbation study relies on whether a choice of leading-order is suitable. Our result with different parameters should show that the adaptive perturbation method provides appropriate saddle points to all coupling regions. In the end, we show that the perturbation parameters should not be a coupling constant.
Histologic Findings and Tissue B-Cell Depletion in Endoscopic Mucosal Biopsy Specimens of the Gastrointestinal Tract After Treatment With Rituximab
Authors: Kmeid Michel , Aldyab Mahmoud , Brar Rupinder , Lee Hwajeong 
Published: July 2021

Abstract

Objectives
Rituximab (RTX) is associated with variable adverse gastrointestinal (GI) events. However, the histologic correlate in affected patients is not well defined.

Methods
Patients (n = 93) who had received RTX and undergone endoscopic biopsies were identified. CD20 and PAX5 immunostains were performed on biopsy specimens showing inflammatory pathology (group A, 36 patients) and 35 of 57 noninflammatory biopsies (group B) that were taken within 1 year from the last RTX infusion. Histologic findings were correlated with tissue B-cell depletion (CD20/PAX5–/–).

Results
B cells were depleted in 12 (33%) of 36 group A biopsy specimens. After excluding biopsies taken more than 1 year from the last RTX infusion, the frequencies of tissue B-cell depletion were similar between group A (12/26; 46.2%) and group B (17/35; 48.6%) (P &gt; .05). Also, the frequencies of inflammatory pathology were not statistically different whether B cells were depleted or not (P &gt; .05). In group A with tissue B-cell depletion (n = 12), causality was indicated in two (17%) cases showing lymphocytic colitis pattern of injury (LCPI).

Conclusions
In RTX-treated patients, tissue B-cell depletion does not appear to be the main cause of inflammatory pathology in the GI tract. A minor subset, however, develops histologic evidence of potential RTX-induced effect, notably in the form of LCPI.