bluuebunny/crossref_metadata_2025_split huggingface dataset:
Towards the advanced predictive modelling in epidemiology
Authors: Brester C , Tuomainen T P , Voutilainen A , Kauhanen J , Semenkin E , Kolehmainen M 
Published: June 2019

Abstract
Data-driven prediction systems used in epidemiological studies are still unsatisfactory from a practical point of view. Different pitfalls should be considered while transferring technologies from research to practice. The proposed k-Nearest Neighbors approach is designed to make disease-related predictions in a more holistic manner: we detect cases of novelty among unobserved subjects to identify situations when model predictions are not reasonably valid. Moreover, it copes with overlapping classes, finds new examples which cannot be labelled with the high confidence and reveals healthy subjects in the training data who might be at risk. Additionally, variable selection is built-in to select relevant predictors. The approach was applied to predict cardiovascular diseases based on the data collected within an ongoing follow-up study undertaken in Eastern Finland. According to the experimental results, our proposal allows increasing the accuracy of predictions made.
Automated chemiluminescent analysis of the antioxidant and prooxidant activity of natural and synthetic substrates having perspective for bioengineering
Authors: Lesovskaya M I , Shaporova Z E , Pyzhikova N I 
Published: June 2019

Abstract
Automated CL-control has a lot of advantages, such as rapidity, information value, objectivity, reproducibility, low-price. As a rule, the method is used for detecting antioxidant capacity of natural substrates. The results described in the paper show that this method has wide opportunities for deciding actual tasks in nutritional industry, preventive and restorative medicine, bioengineering in future. First, the results demonstrated that the method allows to determine optimal extraction conditions to obtain phytopreparates which include nonstability antioxidant and (or) prooxidant compounds. This is shown using phytopreparates (leuzea, rhodiola, rheum, plantago) obtained using local plant materials. Second, results are obtained to determine the presence of real, non-virtual antioxidant or prooxidant properties of commercial micronutrients complexes. In addition, the method allows to provide an individual selection of nutrients in accordance with the characteristics of the ROS balance of the internal environment of the consumer’s body. This way allows to get the reproducible results within a relevant experimental model in short time, which is very important looking for dynamic development of the functional nutrients market. Finally, using this method one get more effective and economic navigation of chemical synthesis. As a result, the efficiency of the subsequent functionalization of synthetic compounds is increased.
Mathematical modelling of pore formation in polymers using supercritical fluid media in the Ornstein-Zernike approximation
Authors: Gil’mutdinov I M , Kuznetsova I V , Gil’mutdinov I I , Sabirzyanov A N 
Published: June 2019

Abstract
The paper studies the process of pore formation using supercritical fluid media. A mathematical model of pore formation in polymers in the process of supercritical carbon dioxide decompression has been developed, taking into account fluctuations in the Ornstein-Zernike approximation based on Patel-Teja cubic equation. Calculations and comparison with experimental data are given on the example of pore formation in polystyrene, which showed satisfactory agreement of the theory with experiment. Parameters of the Lennard-Jones pair interaction potential for carbon dioxide in the carbon dioxide-polystyrene system were obtained. The diffusion coefficient of supercritical carbon dioxide in a polymer takes on a different value than the coefficient of self-diffusion of pure carbon dioxide under the same thermodynamic conditions due to a change in the Lenard-Jones potential profile in a polymeric medium. The obtained values of the parameters of the Lennard-Jones equation, namely, the parameters of the intermolecular interaction potential and the maximum value of the attraction energy, make it possible to adequately estimate the value of the diffusion coefficient under given thermodynamic conditions.
Development and justification of the treatment system layout scheme for dust emissions from mobile and portable asphaltconcrete plants
Authors: Sidyakin P A , Khorzova L I , Borovkov D P , Klimenti N Yu 
Published: June 2019

Abstract
Nowadays, reducing the amount of dust in urban atmosphere is an urgent task for the majority of industrially advanced countries in the world. Road construction works are one of the factors influencing the increase in the dust particles concentration in the atmospheric air. The authors present the treatment schemes for dust emissions from mobile and portable asphalt concrete plants applying dust collectors with countercurrent swirling flows. They conducted an analytical investigation of the operation of the designed layout schemes applying dust collectors with countercurrent swirling flows (CSF), dust concentrators and bag filters. The justification of the optimum layout scheme was presented.
Monitoring of aerial technogenic zone of influence of the production facility as a tool of ecological engineering
Authors: Krupina N N , Kipriyanova E N , Medyanik N V , Smirnova V O 
Published: June 2019

Abstract
The actuality of the extended research of spatial factor of formation of the territory of the maximum long-term air pollution, as a prerequisite of health risks to residents in industrial cities and the corresponding indicator is specified. Due to the heterogeneity of the dispersion conditions, the real boundaries of the zones of negative impact of emission sources turn out to be more controllable, and due to the overlapping and layering of contamination fields, the concentration of impurities may exceed the norms. It was proposed to correct the known index of the ratio of the industrial site area and the pollution zone and use it to calculate the average annual area of the such fields, taking into account key meteorological parameters. Recommended correction factors that characterize the proportion of polluted urban areas, highlighted the key elements of the industrial hub as objects of environmental engineering and specified the direction of search for organizational and technical solutions.
Digital contour of linear control in the pulse voltage stabilizer
Authors: Titovskii S N , Titovskaia T S , Titovskaia N V , Shaporova Z E 
Published: June 2019

AbstractThis paper provides an analysis of the operation of the pulse voltage stabilizer with a digital control contour, which uses a linear dependence between power switch opening pulse duration and the output voltage deviation from the nominal one. The influence of the errors, caused by digital data representation, on the control loop output impulse duration was evaluated. The conditions that minimize the influence of these errors on the stabilizer operation are revealed.
Application of a systematic approach to improving the efficiency of power supply modes of the Republic of Crimea
Authors: Vologdin S V , Yakimovich B A 
Published: June 2019

Abstract
The structure of the region’s energy supply is considered, the characteristics of all the major groups of electricity producers in the region, including thermal power plants, mobile gas turbine power plants, renewable energy sources, backup power sources, are presented. As tariffs in the transport problem under consideration, depending on the purpose of the calculations, it is proposed to use the averaged actual values in a given period of time according to the energy supplying organizations (the purpose of the calculations is to reduce the cost of production and transportation of electricity), and also conditional qualitative assessments - “fines” (The goal is to improve the environmental and reliability of the system as a whole). The influence of the generated power of solar power plants on the operation modes of the power system of the Crimea is investigated. A methodology has been developed to optimize the production of solar power plants that affect the reliability and quality of power supply. The calculation of different scenarios of energy supply of the Crimea carried out, including at peak and average modes of power consumption, with different variants of solar activity, the time of year, taking into account and without taking into account the energy sources under construction, repair works of sources in the off-season. Based on the results of the calculations, conclusions are made about the reliability of the power system in the region under different scenarios of power supply, as well as the need to use the power bridge for the flow of electricity from the mainland in both directions.
On the implementation of the ecological approach in the process of territories demilitarization
Authors: Gerasimova L A , Eremina I Yu , Kuklina A I 
Published: June 2019

Abstract
Ensuring environmental safety in the areas of rocketry operation is associated with an assessment of the natural environment response to the transient effects of chemically hazardous substances. The object of the research was Scotch pine as a bioindicator of pollution of the soil from the storage area of rocket fuel components (RFC). Infection of the needles with chlorosis and necrosis can characterize the level of soil pollution with toxic components. For soil reclamation, it is recommended to carry out a microbiological analysis of the soil and make a detailed map of phytotoxicity to calculate the volume and technology of work. When making a phytotoxicity map, it is recommended to take into account the percentage and quality ratio of needles samples subject to necrosis and chlorosis.
Application of hydrobiological analysis for improving the efficiency of water treatment
Authors: Ponomareva Yu A , Andrianova A V 
Published: June 2019

Abstract
The study was conducted on the open water intake Gremyachiy Log. A period of tighten control at all stages of water treatment was established according to the turbidity of natural water and the quantitative content of algae. It was found that diatoms form the basis of the floristic list in the Yenisei River (66% of the total species composition), they prevail in plankton in all seasons of the year. The patterns of phytoplankton development and its influence on the operation of water intake structures were revealed. The possibilities of optimizing the operation of the Gremyachy Log water intake filtering and treatment facilities by controlling the amount of reagents, used in water treatment, and controlling technological processes, were considered.
Modeling and system analysis of drinking water parameters in urban water supply systems
Authors: Isakov V G , Vologdin S V , Ponomarev D S , Dyagelev M Y 
Published: June 2019

Abstract
The article discusses the use of mathematical modeling and system analysis methods to solve problems of water preparation. Models for predicting indicators of drinking water based on the quality of the source water are proposed. The technological process of deodorization of drinking water is considered. The following system analysis methods were used in the models development: correlation analysis of data, the principal component method, regression modeling, and the least squares method. Hidden relationships between indicators of drinking and source water were identified. The adequacy of the obtained results was proved by comparing them with the actual values. The obtained results approximate well the actual values. The results can be used in water supply systems to improve the quality of drinking water.
Analysis of the state of the fuel market of the Russian Federation and its development prospec
Authors: Bezborodov Yu N , Shram V G , Vereshchagin V I , Sokolnikov A N , Kovaleva M A 
Published: June 2019

Abstract
The article presents an analysis of the state of the Russian fuel market, discusses the quality of fuels and their impact on the environmental situation in large cities, as well as the prospects for the development of the fuel market. The constraints and competitive advantages of transport to gas engine fuel are described. It has been established that the development of the market requires not only the creation of a developed infrastructure and the improvement of gas utilization technologies, but there is also a need to improve legislation in the fuel industry in order to create effective mechanisms for its state regulation.
The elaboration of environmentally safe way of galvanic sludge deactivation with the use of bentonite clay
Authors: Mostalygina L V , Elizarova S N , Kostin A V , Mostalygin A G 
Published: June 2019

Abstract
On the basis of experimental data, the qualitative galvanic sludge composition has been got after reactant purification of waste water of the machine building enterprise. The research has been carried out on the degree of incapsulation of heavy metals in the system of galvanic sludge (GS) – cement-sand (CS) – bentonite clay (BC) with different percentage ratio of components. It has been stated that it took 28 days to complicate galvanic sludge with the mixture of CS and CS-BC. It has been shown that appending of 5% and 10% bentonite clay into the system GS-CS increases its sorption capacity and leads to decrease of washing heavy metals out of it. It has been defined that initial heat treatment of galvanic sludge with subsequent appending of BC ensures decrease of concentration of chromium ions, cuprum and ferrum in the water which is lower than the level of admissible concentration limit (ACL).
Detection of changes in urban environment based on infrared satellite data
Authors: Gosteva A A , Matuzko A K , Yakubailik O E 
Published: June 2019

Abstract
Changes in the microclimate of the urban environment often occur as a result of changes in urban development, artificial changes in the relief, and the cutting down of forest plantations. Due to changes in the urban environment there is a change in the microclimate of the city, which entails a direct change in the land surface temperature. Changes in the urban environment can be detected using space images of different spatial resolution in the visible and far infrared range. Landsat data is currently the most accessible, complete, and open for studying these changes. Thermal imaging is widely used for monitoring urban sites. To increase the spatial resolution, synthesis of Landsat-8 images with higher spatial resolution images of Planet Scope is used, which allows increasing the spatial resolution of surface temperature maps produced from Landsat-8 images from 30 meters to 3 meters. The paper presents the results of an assessment of the land surface temperature in the city of Krasnoyarsk for a two-year period from September 2016 to September 2018 based on the analysis of Landsat-8 and Planet Scope satellite images.
Environmental engineering as a tool to reduce the risks of industrial production in the region
Authors: Afanasieva Elena , Koreva Olga , Tikhii Vladimir 
Published: June 2019

Abstract
This article proves that one of the main conditions of overcoming technological inferiority and improving the competitiveness of the territory is a balanced socio-economic development of the region which should be planned with consideration of reducing the negative impact of industry on the environment on the basis of industrial areas rational placement, the use of resource-saving technologies and alternative energy sources. This article presents a SWOT analysis of the investment project of the industrial enterprise for the production of floor coverings from polyvinylchloride (PVC) being implemented in the Orel region. The authors of the study identified the environmental risks of launching this production. It has been discovered that it will have a negative impact on the environment. One of the effective tools to reduce environmental risks and to ensure environmental safety in the industrial enterprise is environmental engineering. Some specific measures for the industrial enterprise environmental audit for the production of floor coverings from polyvinylchloride (PVC) in the Orel region have been proposed.
The impact of cavitation-activated water on combustion dynamics and environmental characteristics of coal-water slurry fuel
Authors: Stebeleva O P , Kashkina L V , Petrakovskaya E A , Nikitin S L , Valiullin T R 
Published: June 2019

Abstract
Among the new coal technologies the burning of low-grade coal in the form of coal-water slurry fuel (CWSF) is of a great interest. The basis of CWSF is a highly concentrated coal-water slurry consisting of finely ground coal, water or other liquid and plasticizing agents. The development of CWSF technology is highly relevant for solving global problems of resource conservation and ecology. The study is dedicated to CWSF properties with respect to Kansk-Achinsk coal and water. This paper presents the results of the influence of CWSF’s preliminary cavitation water treatment on the combustion dynamics of fuel, (including the features of the combustion temperature trends, delayed ignition time and time of complete combustion) and on its environmental characteristics. A rotary-type hydrodynamic oscillator at high angular velocity (10000 rpm) was used in supercavitation mode. It is shown that the technology of cavitation water treatment leads to a change in the dynamics of CWSF’s combustion and to an additional decrease in NOx emissions by 1.6 times, CO2 by 1.3 times.
Energy economy potential estimation of establishment needs objects of power distribution company
Authors: Saprykin A I , Sizganova E J 
Published: June 2019

Abstract
This article describes a systematic approach in assessing the potential of energy saving, based on the universal model of technocenosis. A rank analysis of retrospective data on energy consumption was carried out, a mathematical model of power consumption was obtained. The procedures of interval estimation of the rank parametric distribution are carried out and the objects of establishment needs are determined, which power consumption is not included in the boundaries of statistical norms. With the help of cluster procedures, technocenological norms of power consumption are calculated. Based on the theory of structural and topological dynamics of the rank parametric distribution, the predicted power consumption is determined. The energy saving potential has been calculated and the objects of economic needs have been identified, where the implementation of measures aimed at energy saving is first necessary.
Research results of makeup influence on semi-synthetic motor oils thermal oxidation stability
Authors: Agrovichenko Daria V , Kovalsky Boleslav I , Bezborodov Yury N 
Published: June 2019

Abstract
During the running motor oil quality determination oil makeup has a big influence on thermal oxidation mechanism, however there is a problem of insufficient examination of makeup influence on motor oil conditions. Main goal of these researches is to determine how makeup effects on motor oil’s thermal oxidation stability. For the research Lube oil Lukoil Super 10W - 40 SG/CD has been chosen. Thermal oxidation stability results assessment was conducted basing on obtained values of: light stream absorption criteria, volatility and thermal oxidation stability criteria in cases of research with makeup and without it. There was offered a criteria of makeup influence on thermal oxidation stability values, which identified as change of light stream absorption rate proportion and thermal oxidation stability criteria in case of research with and without makeup. Research methodology involved motor oil test on thermostating device consequently under temperatures 180, 170 and 160 °C with makeup and without it in condition when quantity of makeup oil corresponded to vaporized oil quantity. Research results demonstrated that oil makeup decrease thermal oxidation intensity on the whole temperature test rate.
Analysis of climatic characteristics of the territory of distribution of the Siberian silk moth
Authors: Dergunov A V , Yakubailik O E 
Published: June 2019

Abstract
Siberian silk moth is one of the most dangerous pests of coniferous forests of Krasnoyarsk region, which are the most important natural resource of the region. Climate change is considered to be one of the essential criteria for the growth of the silk moth population. In 2014, there was another outbreak of the number of silk moth in the Yenisei district of Krasnoyarsk region. It is known that the forest area of the Yenisei river left bank is subject to severe damage by the silk moth, and the right bank is characterized by a weak forest damage. The task of this work is to analyze the situation with the heterogeneous lesion of the forest by the Siberian silkworm on both banks of the Yenisei river of the territory under consideration according to most detailed available meteorological data for the period from 2009 to 2018. The results of the study showed that the left bank of the river has an increased surface temperature compared to the right bank by an average of 1-1.5°C during the period under review. This effect may be the reason for the spatial distribution of the Siberian silk moth population.
Modeling of the milling process dynamics of the fibrous semiproducts
Authors: Pen V R , Stupina A A , Levchenko S I , Panfilov I A , Pen T V 
Published: June 2019

Abstract
Presentation of the milling as mechanochemical process allows to present a mathematical model based on the principals of formal kinetics that forms a complete mathematical description of the dynamics of the milling of fibrous semiproducts.
Experimental determination of freeze-thaw resistance in self-compacting concretes
Authors: Kocáb D , Lišovský M , Žítt P 
Published: June 2019

Abstract
The paper describes the determination of freeze-thaw resistance in self-compacting concretes and compares several test methods used for this purpose. The basic principle of testing freeze-thaw resistance is the observation of changes, in this case the loss of certain properties, in concrete attacked by freeze-thaw cycles. This paper documents measurements of tensile strength, tensile splitting strength, and dynamic Young’s modulus measured by the ultrasonic pulse velocity test and resonance method. The outcome of the experiment is an evaluation of how suitable each test is for determining the freeze-thaw resistance of self-compacting concrete.
Acid attack on hardened cement paste by acids forming low soluble calcium salts
Authors: Pavlík V 
Published: June 2019

Abstract
Solutions of acids have very aggressive effect on the cement matrix in concrete. Aggressiveness of the solutions increases with concentration of an acid but also depends on the acid type. The corrosion effect of solutions of various types of acids and their mixtures on hardened cement pastes is described in the paper. The results confirmed, that the rate of corrosion of hardened cement paste in solutions of strong acids (HCl, HNO3) was faster than in solutions of weak acids. However, the rate of corrosion of hardened cement paste was lower in solutions of acids that produce low soluble calcium salts, because calcium salts filled the pores in the layer of corrosion products and thus increased its diffusion resistance.