bluuebunny/crossref_metadata_2025_split huggingface dataset:
Comparative analysis of the influence of urea additives on the properties of poly(vinyl alcohol) cryogels formed from the polymer solutions in water or dimethylsulfoxide media
Authors: Yu Kolosova O 
Published: May 2020

Abstract
Various poly(vinyl alcohol)-based gels are known for a long time and they are related to the gel materials of significant scientific and applied interests. Among different poly(vinyl alcohol) (PVA) hydrogels those formed via the so-called cryotropic gelation approach, i.e. PVA cryogels, attract special attention owing to, firstly, simplicity of their preparation and, secondly, very good properties of such matrices. The aim of this work was to compare the physicomechanical properties of PVA cryogels formed from the urea-containing aqueous and dimethylsolfoxide solutions of the polymer. It was shown that not only the solution’s nature influences greatly on the properties of the resultant cryogels, but also the low-molecule additives in the initial polymer solutions lead to the opposite effect in cryogels characteristics. The results of our investigation can expend the area of PVA cryogels usage in many fields.
Development of optimal formulations of natural alloyed cast irons for metals and engineering, and thermal timing subjected to secondary treatment by the method of resonance-intermittent refining
Authors: Lubyanoi D A , Yu Shevchenko S , Lubyanoi D D , Markidonov A V , Zvarych E B 
Published: May 2020

Abstract
This article presents the results of the introduction of resonant-pulsed refining technology in production, which made it possible to change the microstructure of blast-furnace irons and significantly increase the operational stability of molds and pallets.
Distribution of impurities in ceramics based on zirconium nitride obtained using the oxidative constructing approach
Authors: Kovalev I A , Shevtsov S V , Vorkachev K G , Ashmarin A A , Shokodko A V , Ogarkov A I , Ovsyannikov N A , Kochanov G P , Tenishev A V , Kazakova V N , Shornikov D P , Shokodko E A , Strelnikova S S , Chernyavskii A S , Solntsev K A 
Published: May 2020

Abstract
The localization of impurity phases in ceramics created by direct nitridation of zirconium rolled metal was established. For ceramics synthesized at temperatures above the melting point of the metal, the impurity phases are localized along grain boundaries and at macrodefects. In a composite heterostructure of the composition ZrN –(ZrN
x/α
--solid solution of nitrogen in metal/ZrN
x
) – ZrN, impurity phases are predominantly localized in an α-solid solution of nitrogen with their subsequent displacement to grain boundaries and macrodefects at the end of the nitridization process.
Investigation of the influence LiF sintering additive on the properties of magnesium aluminate spinel ceramics
Authors: Senina M O , Lemeshev D O , Pedchenko M S 
Published: May 2020

Annotation
The relevance of developing a technology for creating transparent ceramics based on magnesium aluminate spinel is considered. The spinel precursor was obtained by the reverse coprecipitation method. The effect of the phase composition of spinel powder and sintering additive on the properties of ceramics is shown.
Elementoxanealumoxanes – modifiers of silicon carbide ceramic composites components
Authors: Shcherbakova G I , Storozhenko P A , Apukhtina T L , Kh Blokhina M , Zhigalov D V , Novokovskaya E A , Varfolomeev M S , Titov D D , Ashmarin A A 
Published: May 2020

Abstract
Pre-ceramic organoelementoxanealumoxane oligomers whose pyrolysis results in oxide ceramics of multicomponent composition: aluminum yttrium (xY2O3·yAl2O3), yttrium aluminum silicate (xY2O3·yAl2O3·zSiO2), yttrium aluminum magnesium (xY2O3·yAl2O3·zMgO) ones, are modifiers of silicon carbide based composite materials that increase their resistance to high temperature oxidation.
Mass-transfer kinetics, structure, and tribological properties of coatings deposited on steel in Ar or N2+O2 by electro-spark alloying using Cr3C2-NiAl electrodes
Authors: Kiryukhantsev-Korneev Ph V , Sytchenko A D , Gorshkov V A , Levashov E A 
Published: May 2020

Abstract
Multicomponent coatings were obtained by electro-spark alloying using Cr3C2-NiAl electrodes, in air and in argon medium at direct and opposite polarity. Cr3C2-NiAl electrodes were manufactured by self-propagating high temperature synthesis. Mass transfer kinetics was determined by gravimetric method. The structure and composition of the coatings were evaluated by scanning electron microscopy and energy-dispersive analysis methods. Friction coefficient was measured using pin-on-disk test. Roughness parameters and wear tracks were studied by optical profilometry. It was found that the opposite polarity in combination with a protective environment is optimal in terms of growth rate, structure and tribological properties. The coatings obtained by the best regime had a relatively low roughness (Ra=4 jm), high wear resistance and a low friction coefficient at the level of 0.18.
Structure Of The Al85Ni7Fe4La4 Polycrystalline Alloy After Complex Impacts Of Deformation And Flash Lamp Annealing
Authors: Bakhteeva N D , Todorova E V , Kannykin S V 
Published: May 2020

Abstract
On polycrystalline alloy Al85Ni7Fe4La4 the effectiveness of complex processing was shown, including intensive plastic deformation (IPD) by shear under pressure and flash lamp annealing (FLA), to improve the strength characteristics of cast aluminum alloys.
Influence of gallium oxide concentration on the properties of transparent ceramics based on magnesium aluminate spinel
Authors: Ulyanova A V , Senina M O , Lemeshev D O 
Published: May 2020

Annotation
The article deals with the preparation precursor of magnesium aluminate spinel by the method of inverse co-precipitation, as well as the study of effect of firing temperature and the concentration of the gallium oxide addition on the optical and ceramic properties of the products is shown.
Corrosion resistance of nonnickel shape memory alloy
Authors: Nasakina E O , Sudarchikova M A , Tsareva A M , Sergiyenko K V , Konushkin S V , Kaplan M A , Balashov E P , Sevost’yanov M A 
Published: May 2020

Abstract
Corrosion resistance of a Ti - (20-30) Nb - 5Zr shape memory alloy were studied. The structure and composition of the materials were determined using SEM and Auger electron spectrometry. Electro-chemical parameters and alloy dissolution in physiological modeling media were investigated. It has been shown that the alloys are quite corrosion-resistant: no dissolution and high Ebd potential were observed.
Study of products influence of rice waste liquid-phase catalytic oxidation on growth and plant development
Authors: Khvatov A V , Sevostyanov S M , Sakharov P A , Bocharnikova E A , Ph Deeva N , Son B K , Yu Aladin D , Lomakin S M , Lukanina Yu K , Yu Zherebker A , Kononikhin A S , Demin D V 
Published: May 2020

Abstract
A method for producing growth stimulants using liquid-phase catalytic oxidation of rice waste was tested, with an assessment of the composition of the resulting solution, active silicon, and bioassay. Laboratory studies have shown that solutions from rice waste synthesized by liquid-phase catalytic oxidation are promising for the preparation of plant growth stimulants.
Numerical solution of stress-strain state during electromechanical treatment of plasma sprayed coatings
Authors: Yu Ivannikov A 
Published: May 2020

Abstract
The principal aim of this study was to determine the distribution patterns of the stress-strain state at different times. The solution was performed using the finite difference method. The main results were presented depending on the time of action of the alternating electric current during the electromechanical treatment of the plasma sprayed coating.
Smart Material Serves Other Smart Materials: Comparison of Measurement of CO2 Concentration by Optical and Optoacoustic Methods
Authors: Michal Dostál , Jan Suchánek , Zdenek Zelinger , Jan Wild , Petr Bitala , Aleš Dudácek , Václav Válek , Vít Klecka , Petr Kucera , Václav Nevrlý 
Published: May 2020

Abstract
In this study, we compare the sensitivity of the Wavelength Modulation Spectroscopy (WMS) to the Quartz enhanced photoacoustic spectroscopy (QEPAS) method on a sample of CO2 gas at various concentrations. We show the advantages of the QEPAS method, the essential part of which is a crystalline segment made of smart material.
Identification of the causes of non-uniformity of the condensate collector metal of the main gas pipeline
Authors: Nasibullina O A , Tyusenkov A S 
Published: May 2020

Abstract
The complex of negative effects of hydrogen on metal, leading to destruction of metal structures, is commonly called hydrogen corrosion. The object of the study was a sample of steel A 516-55 condensate collector of the main gas pipeline, which was subjected to hydrogen stratification. The aim of the work was to establish a link between the non-uniformity of the metal and its tendency to hydrogen stratification. The work solved problems that were aimed at studying the physical and mechanical properties and microstructure of the analysed metal. X-ray fluorescence analysis was carried out to identify the causes of discontinuities within the metal. A light microscopy method was carried out to study the microstructure of the test sample taken from the focus zone of the condensate collector destruction. The microstructure was examined using the “METAM RV - 22 type EU LOMO metallographic microscope. An X-ray fluorescence analysis was carried out to determine the causes of the discontinuity within the metal. Tests were performed on a EDX-800HS spectrometer at various X-ray tube operations. It has been found that the inhomogeneities are due to the uneven distribution of manganese in the metal body.

A post-publication change was made to this article on 11 Jun 2020 to correct the pdf so that it matched the webpage.
Vibration studies of a magnetoelastic material
Authors: Minaev A Ja , Korovkin Ju V 
Published: May 2020

Abstract
This article contains the results of research on the vibration characteristics of elastomer samples. Experimental studies of the dynamic properties of magnetoactive elastomer materials under the action of magnetic fields on a vibration complex are conducted. A kinematic sinusoidal excitation is given on the table of the vibrator from the side of the support on the tested product. The accelerations at the sample output are recorded. Oscillograms of accelerations at the input and output of the sample under the action of a magnetic field are obtained. The range of displacement of resonant frequencies under the influence of a magnetic field is shown. The justification for creating an electromagnet lifting force that overcomes the elastic force of the test material is given. Computational modeling is performed to create an elastic deformation of a magnetoactive elastomer, both static and dynamic, using a magnetic field.
Influence of the composition of the metal-ceramic coating on wear resistance
Authors: Roshchin M N 
Published: May 2020

Abstract
The work is devoted to the development of a wear-resistant coating, combining the hardly compatible properties of high hardness and plasticity. The proposed composite coating has a nickel-chrome corrosion-resistant matrix, providing high plasticity, and hardening phase Al2O3, which can significantly increase the hardness of the coating and wear resistance. The use of laser radiation to melt the coating allows to crush Al2O3 grain to 0.05 … 1.0 MкM, which significantly increases the operational properties of the coating under the influence of variable loads on the friction assembly. Investigations of the frictional properties of wear-resistant coatings PG-10N-01 + 15% A1203 weld by a laser showed that when lubricated with hydraulic fluid AMg-10, the friction coefficient paired with Br.AJN 10-4-4 at a load of 5 … 40 MPa and a sliding speed of 0.05 m / s is less than with solid electrolytic chromium. Wear rate Br. AZH 10-4-4 at a load of 10 MPa and a sliding speed of 0.25 and 1.0 m / s in friction pair with coating PG-10H-01+15%A12O3 is 14 … 20 times less than in a pair with solid electrolytic chrome coated respectively. The wear-resistant coating PG-10N-01 + 15% A12O3, weld by laser, can be an alternative to replace hard electrolytic chrome plating. The developed technology for producing wear-resistant ceramic-metal coatings with an ultrafine hardening phase can be applied to create friction pairs of heavily loaded tribocouplings assemblies.

A post-publication change was made to this article on 11 Jun 2020 to correct the pdf so that it matched the webpage.
Information search subsystem for intellectual system of improvement of pressure processing processes
Authors: Byvaltsev Sergey V 
Published: May 2020

Abstract
The software for the information retrieval subsystem of the intelligent system for optimizing pressure processing processes was developed. The solution to the problem of finding information on the Internet comes down to finding key information. Algorithms for solving the problem and work results are presented. The advantages and disadvantages are shown in comparison with existing approaches. A program that implements a search algorithm is proposed.
Resistance law for turbulent Couette-Taylor flow and the Lambert W function
Authors: Balonishnikov Alexander , Kruchkova Julia , Opalikhina Olga 
Published: May 2020

Abstract
The article is focused on an application of generalized local balance turbulence model for Couette-Taylor flow. It is shown that resistance law can be expressed in terms of the Lambert W fuction. Comparison with some known experimental data are given.
A method of compensating distortion of radio signals with amplitude-phase modulation in a quadrature driver
Authors: Sherstukov S A , Buravtsova A N , Pechnikov S S 
Published: May 2020

Abstract
The article considers the features of spectrally effective radio signals and the principles of signal formation by differential quadrature amplitude modulation with a shift of π / 4. A method is proposed for compensating for distortion of radio signals with amplitude-phase modulation in a quadrature driver. A distortion compensation scheme is modeled, and the possibility of its application for non-linear amplification of signals with a variable envelope is considered.
The excitation spectrum in a weakly interacting bose gas
Authors: Taylanov N A , Kanokov Z , Urinov S Kh 
Published: May 2020

Abstract
In the work the problem of phenomenon of superfluidity is considered within the framework of Bose-Einshtein condensation, theoretically. We discuss the main features of the excitation spectrum in a weakly interacting Bose gas. Our analysis will show that the healing length, which determines the length scale below which collective phenomena are physically more relevant than free-particle-like ones. Since the weakly interacting gas of Bose particles has been mapped onto a gas of noninteracting quasiparticles, we are able to analyze the thermodynamics of the system and find how temperature affect the depletion of the condensate.
Simulation of the multi-component gas transfer through porous adsorbent in the model of competing adsorption
Authors: Bataronov I L , Selivanov V F , Semenozhenkov M V 
Published: May 2020

Abstract
In the framework of the competing adsorption model in the limit of strong adsorption a model of mass transfer of two-component gas through an absorbing porous body was developed. The model includes a system of two related equations. The first integral of the system is found, by which the problem is converted to a self-similar form. Two criteria relations defining the type of problem solution are established. The first of them includes the ratio of the threshold adsorption concentrations. At values of this parameter greater than 100 or less than 0.01, a pronounced displacement of one of the gas components inward the adsorbent is observed. The second parameter is proportional to the ratio of the initial concentrations of components and affects the mass of gas components absorbed by the adsorbent. Self-similar expressions are obtained for the distribution of the absorbed mass and the total absorbed mass of the gas components. For the air-titanium system, barothermal relationships of the depth of gas penetration into the adsorbent and the absorbed mass of components are calculated. It was found that for nitrogen-oxygen air mixture, the masses of absorbed nitrogen and oxygen by porous titanium practically coincide.
The effect of space weather on the ionosphere at the 15° meridian during CAWSES-II
Authors: Maltseva O , Nikitenko T 
Published: May 2020

Abstract
Space weather determines the ionospheric state, knowledge of which is especially important during disturbances. To study this state, the period March 7-17, 2012, recommended by SCOSTEP for detailed studies and called CAWSES-II, was selected. This period has a number of features of the behavior of the solar wind parameters SW and the interplanetary magnetic field IMF. In this paper, we study their relationship with the total electron content TEC and the critical frequency foF2 of the ionosphere at the meridian of 15°, near which several ionosondes are located. The correlation coefficients of TEC and foF2 with the SW and IMF parameters for the month and the selected period are determined. For foF2, the difference between the correlation coefficients for the month and March 7-17 is less than for TEC. The possibility of using TEC to determine foF2 was shown, since the response of foF2 to disturbances was very close to the response of TEC and the variations of TEC and foF2 have been occurring synchronously.
Technological innovations in bread production in the Arctic
Authors: Ermoshin Nikolay A , Romanchikov Sergey A 
Published: May 2020

Abstract
The conditions and factors determining the need to develop technological innovations for food production in the Arctic zone of the Russian Federation are considered. An innovative technology of separated cleaning and electro-hydraulic grinding of grains, electrocontact baking of bread and bakery products is proposed. The composition and principles of the combined device for grinding grain and bread production are disclosed. The principles of technological operations using technological equipment for the production of whole grain bread are formed. The directions of further research on food production, optimizing food storage are determined and recommendations are given on the food supply of the population in remote areas, as well as in emergency situations, natural disasters, and in quarantine conditions.
Modular hardware platform for the development of IoT devices implemented using multi-chip packaging technology
Authors: Kirienko D A , Lunkov P V , Putrolaynen V V , Aryashev S I , Belyaev M A 
Published: May 2020

Abstract
The paper presents the concept of a modular hardware platform for the development of IoT devices using the example of a system for collecting and analyzing information. Design variants of modules that implement the basic functions of IoT devices are presented: obtaining primary data and their preliminary processing, data aggregation and transmission, data analysis and storage of results. The technologies of multi-chip packaging and three-dimensional integration are presented, which can significantly reduce the size of the developed modules.
The assessment of the radio tower bearing capacity during the installation of some additional equipment
Authors: Mashtakov Alexander P , Khakimzyanov Rustam R 
Published: May 2020

Abstract
The article presents the assessment data that explain how the defects impact on the bearing capacity of radio tower pylons and stress and strain state of the pylons. The obtained results raise the possibility of replacing the equipment set on the radio towers with the additional equipment, including the one for solar radiation regeneration.
Equipment quality management based on a mathematical model to detail its life cycle
Authors: Savicheva Yu N , Enikeeva A A 
Published: May 2020

Abstract
The equipment quality management program at the production stage provides for the use of statistical information on the most characteristic conditions of equipment during its operation as initial data. In this assessment, both operational and reliability characteristics of the equipment are subject, which are the criteria for establishing mutual compliance of the conditions of its production with real operating conditions. In accordance with the foregoing, the basis for the implementation of equipment quality regulation is its failure flow of abnormally high intensity. At the same time, two particular cases of high failure rate are distinguished: as the first one, a mismatch of the production conditions of the equipment with the current technical requirements is accepted, the result of which is products with a hidden factory defect. As practice shows, it is impossible to establish its presence with high accuracy as a result of performing input control, which leads to equipment failures during operation at various operating times. The second one is the discrepancy between the production conditions of the equipment and the actual operating conditions. In this case, due to the design features, the equipment is not able to withstand typical operational loads, which causes a high failure rate.
About some automated processes in the production of dairy products
Authors: Kozub Y A , Komlatsky VI , Khoroshailo TA 
Published: May 2020

Abstract
When processing milk and producing dairy products, the key factor is the control of the quality indicators of milk and manufactured products using automatic control systems of SAK with the use of microprocessors and microcontrollers. When milk is taken, automated plants allow you to determine the composition and quality of milk, including the content of somatic cells, mass fat content and protein fraction. The milk storage tanks are equipped by the local automatic systems. The technological processes of milk normalization are associated with the adjustment of its parameters. The functional diagram of automatization of the milk normalization process in the flow involves the use of a microprocessor controller. The composition of the automated production area of drinking milk includes information sensors on the status of process parameters, digital instruments for monitoring process parameters. The process of producing liquid starter cultures and bacterial concentrates involves the possibility of changing the productivity of the cultivator. Automatization does not include the supply of milk to the process equipment, the transfer of equipment from one technological operation to another and many others. Further automatization of technological processes in dairy production should be based on the extensive use of robotics and flexible robotic lines.
Tests in the insulating cameras of the improved separator
Authors: Khodjiev M T , Murodov O J , Eshmurodov D D , Eshnazarov D A 
Published: May 2020

Abstract
The article is devoted to the study of the equipment of a cotton fibers processing plant. At the same time, an improved version of the cotton fibers Separator is recommended. The results of the enhanced separator’s experimental results are also presented. The scientific significance of the research results is justified by the development of a separator design ensuring the preservation of the initial quality indicators of cotton by protecting it from mechanical influence, as well as by developing a method for preventing obstruction during separation of cotton from air, by rational arrangement of the air chamber in the separator working chamber, and by increasing the efficiency of the separation process by establishing special guides after the inlet pipe.