bluuebunny/crossref_metadata_2025_split huggingface dataset:
SPECIFIC CARBON DIOXIDE EMISSIONS OF INDIVIDUAL HYDROCARBONS IN MOTOR FUELS
Authors: Yakupov Marat M. , Aznabaev Radmir R. , Simonova Ekaterina V. , Vildanov Farhaд Sh. , Gubaydullin Irek M. , Rakhimov Marat N. 
Published: June 2024

The increase in greenhouse gases in the atmosphere is considered to be one of the global problems of our time, as this phenomenon leads to an increase in ambient temperature. The international community tries to take various measures to reduce greenhouse gas emissions. Within the framework of the UN Framework Convention on Climate Change, the Paris Agreement was adopted in 2015, aimed at reducing greenhouse gas emissions and limiting global temperature increases. In 2016 Russia joined the Paris Agreement on Climate and committed to reduce greenhouse gas emissions by 25–30 % since 1990 levels by 2030. Transport is and will remain one of the main emitters of carbon dioxide emissions in the medium term. CO2 emissions from the combustion of any fuel depend primarily on its chemical composition. The composition of modern motor fuels includes paraffin, naphthenic, olefin and aromatic hydrocarbons, and sometimes oxygen-containing compounds are introduced into their composition. The article presents for the first time the results of studies of specific CO2 emissions of various classes of hydrocarbons included in motor fuels, depending on the number of carbon atoms in the molecule. It is shown that the specific CO2 emissions of hydrocarbons included in the composition of motor fuels differ greatly both in group composition and within groups themselves. Specific CO2 emissions of such high-octane components of automobile gasoline as butanes and toluene, for example, differ by 10.6 %, and in terms of unit of energy released – by more than 24 %.
DIVISION OF OILY EMULSIONS BY POLYSULFONAMIDE MEMBRANES TREATED WITH PLASMA OF GLOW AND CORONA DISCHARGES
Authors: Dryakhlov Vladislav O. , Alekseeva Marina Yu. , Sanatullova Zemfira T. , Shaikhiev Ildar G. 
Published: June 2024

The problem of hydrocarbon ingress into the environment is a global issue, associated with both local pollution near the source of formation and the hydrosphere as a whole. The application of energy- and resource-saving technologies to reduce waste emissions into the environment, with the possibility of their partial return to the technological cycle, is an optimal solution for preventing pollution and rational resource utilization. Membrane technologies meet these requirements and are a universal solution for purifying any pollutant with the possibility of its recovery. Moreover, the efficiency of these processes can exceed 99 %, while the equipment occupies less space and uses minimal reagents compared to other apparatus. Based on the above, this study presents research on the separation of hydrocarbon emulsions based on I20-A grade industrial oil using polysulfonamide membranes. To intensify the process and enhance resistance to oil fouling, polymer filters were treated with corona and glow discharge plasma. As a result of this modification, the separation efficiency increased from 80.9 % to 99.0 %, and the productivity increased by approximately 10 times. Analysis of the membranes using electron microscopy revealed surface deformations, such as changes in roughness, due to plasma treatment, leading to improved selectivity towards the water phase of the emulsion. Analysis of the IR spectra showed the most significant differences in absorption bands between the original and plasma-treated polysulfonamide (PSA) membranes in the area of C–O stretching vibrations, contributing to increased water adsorption in the corresponding area. The research results recommend the application of the tested membrane ultrafiltration method for treating wastewater containing emulsified oils, such as used lubricants or cleaning solutions. Plasma treatment of membrane filters with corona or glow discharge contributes to increased efficiency and productivity in emulsion separation.
Specifying the structural formula of kaolinite from the Orenburg Region by means of spectroscopic methods
Authors: Chetverikova Anna G. , Makarov Valery N. , Kanygina Olga N. , Seregin Mikhail M. , Stroganova Elena A. 
Published: June 2024

Kaolinite certification is necessary when using it as a raw material in the ceramic industry. The kaolin clay deposit discovered in the Orenburg Region in 2018 is presumably the largest in the country. Within the Koskolskaya area, 5 mineral deposits have been described. Three of them are particularly promising deposits of high-quality kaolin clay. Previously, studies of the technological and physical characteristics of clay from this deposit were carried out. The purpose of our study was to derive and specify the structural formula of kaolinite contained in the clays. After elutriation and grinding in a ball mill, natural clay was sifted through a sieve with meshes of 40 μm. The conducted IR, Raman, and EPR spectroscopy, as well as DTA allowed us to monitor the process of metakaolinisation, which occurs as a result of dehydration of kaolinite (i.e. the process of transformation of kaolinite into metakaolinite). Spectroscopic methods made it possible to analyse the parameters of the fine structure, in particular, the degree of crystallinity of kaolinite particles and the occurrence of iron and magnesium ions in hydroxyl sheets. Conducting a series of experiments, we managed to specify the structural formula of the kaolinite of the Koskolsky deposit of the Orenburg region: K,Na,Ca,Ba Al Fe ,Fe Mg Mn,Cr 0.16 3.62 3+ 2+0.11 0.27 0.01 Si Ti O OH 3.86 0.14 10 8. The square brackets indicate the cationic compositions of the hydroxyl and siloxane sheets that formed the surface charge of the mineral particles. Compensator ions remain outside the square brackets. Thus, in our study we assessed the substance used as a raw material in the ceramic industry and determined the role of elutriation and mechanical treatment of kaolin clay.
Phase equilibra in the Ag2S–Ag8GeS6–Ag8SiS6 system and some properties of solid solutions
Authors: Ashirov Garay M. , Babanly Kamala N. , Mashadiyeva Leyla F. , Yusibov Yusif A. , Babanly Mahammad B. 
Published: June 2024

Phase equilibria in the Ag2S–Ag8SiS6–Ag8GeS6 system were studied using differential thermal analysis and powder X-ray diffraction technique. Boundary section Ag8SiS6 – Ag8GeS6, liquidus surface projection, an isothermal section of the phase diagram at 300 K, and some polythermal sections of the studied system were constructed. The formation of continuous series of solid solutions between both crystalline modifications of the starting compounds was determined in the Ag8SiS6–Ag8GeS6 system. The liquidus surface of the Ag2S–Ag8SiS6–Ag8GeS6 system consists of two fields corresponding to the primary crystallization of the high-temperature modifications of the HT-Ag8Si1-xGexS6 and HTAg 2S phases. Lattice parameters for both modification of solid solutions were calculated based on powder X-ray diffraction data. The concentration dependence of lattice parameters obeys Vegard’s rule. The obtained new phases are of interest as environmentally safe materials with thermoelectric properties and mixed ionelectron conductivity
Hydrogen permeability of 48Cu52Pd cold-rolled alloy foil and different methods of its surface pretreatment
Authors: Morozova Natalia B. , Sidyakina Lidiya E. , Dontsov Alexey I. , Vvedenskii Alexander V. 
Published: June 2024

The process of atomic hydrogen penetration into the metal phase is complicated by the phase-boundary transition from the liquid and/or gas phase. That is why the cleanliness of metal and alloy surfaces is of particular importance. The purpose of this work was to determine the effect of surface pretreatment using photon pulses, ultrasound, and potential cycling on the parameters of hydrogen permeability for 48Cu52Pd metal cold-rolled membranes. The study was focused on a foil of copper-palladium homogeneous alloy with 48 at. % Cu and 52 at. % Pd composition. The studied samples were obtained by cold rolling and their thickness were 10 and 16 μm. Surface pretreatment included rinsing in acetone, using ultrasound, pulsed photon treatment, and quadruple potential cycling over a wide range of potentials. Electrochemical studies included cyclic voltammetry and cathode-anodic chronoamperometry in a deaerated 0.1 M H2SO4 solution. Hydrogen permeability was calculated using mathematical models for samples of finite and semi-infinite thickness. It was found that the surface treatment of a 48Cu52Pd foil with photon pulses leads to both an increase in the ionisation rate of atomic hydrogen and an increase in the roughness of the foil surface. The diffusion coefficient of atomic hydrogen does not depend on the method of surface pretreatment with ultrasound and photon pulses. The extraction rate constant for the extraction of the atomic hydrogen after photon treatment increases, which facilitates the processes of both H introduction and ionisation due to the release of active centres of the surface. Electrochemical cleaning of the surface during the quadruple potential cycling contributes to the growth of the extraction rate constant for the extraction of atomic hydrogen
Features of the resistive response to ozone of semiconductor PdO sensors operating in thermomodulation mode
Authors: Ryabtsev Stanislav V. , Obvintseva Nina Yu. , Chistyakov Viktor V. , Al-Habeeb Azl A. K. , Shaposhnik Aleksey V. , Turishchev Sergey Yu. , Domashevskaya Evelina P. 
Published: June 2024

This work is dedicated to the issue of increasing the selectivity of semiconductor PdO sensors in case of ozone detection. Thin PdO films were obtained using thermal sputtering of Pd and its subsequent oxidation. We characterised the obtained material using X-ray diffraction analysis and optical spectroscopy. We studied the gas-sensing properties of thin films in the mode of periodically changing temperature. The use of the thermal modulation mode allowed discovering the extremes of the resistive response of the PdO sensor in ozone, which helped to increase the selectivity of the sensor while detecting this gas. We suggested a possible mechanism of ozone chemisorption, which determined the specific form of the thermally modulated PdO response. The studies of the resistive response of PdO sensors under the conditions of ultraviolet illumination confirmed the suggested mechanism of ozone chemisorption
Localization of the E. coli Dps protein molecules in a silicon wires under removal of residual salt
Authors: Parinova Elena V. , Antipov Sergey S. , Sivakov Vladimir , Belikov Evgeny A. , Chuvenkova Olga A. , Kakuliia Iuliia S. , Trebunskikh Sergey Yu. , Fateev Kirill A. , Skorobogatov Matvey S. , Chumakov Ratibor G. , Lebedev Alexei M. , Putintseva Olga V. , Artyukhov Valerii G. , Turishchev Sergey Yu. 
Published: June 2024

The work is related to the removal of residual salts in hybrid structures formed as a result of silicon wires arrays combining with a nanomaterial of natural origin – bacterial ferritin-like protein Dps. The study of the morphology and composition of the surface and the bulk part of the hybrid structure as a result of combination and subsequent washing in water was carried out. The method of metal-assisted wet chemical etching was used to obtain silicon wires arrays. To obtain recombinant protein, Escherichia coli BL21*(DE3) cells with chromatographic purification were used as producers. The combination of silicon wires with protein molecules was carried out by layering them in laboratory conditions, followed by drying. The residual salt found earlier in the hybrid material was removed by washing in water. The resulting hybrid material was studied by scanning electron microscopy and X-ray photoelectron spectroscopy. A well-proven complementary combination of scanning electron microscopy and X-ray photoelectron spectroscopy together with ion etching was used to study the morphology of the hybrid material “silicon wires – bacterial protein Dps” and the composition with physico-chemical state respectively. In arrays of silicon wires with a wire diameter of about 100 nm and a distance between them from submicron to nanometer sizes, protein was found as a result of layering and after treatment in water. At the same time, the amount of residual NaCl salt is minimized on the surface of the hybrid structure and in its volume. The obtained data can be used in the development of coating technology for the silicon wires developed surface available for functionalization with controlled delivery of biohybrid material.
Solid wetting layer, interphase formation, and thin-film nanomaterials. Brief review
Authors: Plyusnin Nikolay I. 
Published: June 2024

A review of the results on the formation of the interface between 3d metals and silicon silicides under identical conditions for various parameters of the deposited vapor, crystallographic orientation and substrate temperature is presented. A generalization of the results has been carried out, which consists of the fact that during the process of deposition of hot vapor on a colder substrate, the transition from the surface phase to the bulk phase occurs through a solid wetting layer (SWL). A classification of substrate-stabilized phases, including SWL, is proposed. It has been shown that SWL has an electronic density different from bulk phases, a smooth or nanostructured morphology, optical, electrical, and magnetic properties, and plays an important role in the formation of interfaces between bulk phases, their epitaxial films and multilayer nanostructures. These studies suggest the promise of SWL as a new nanotechnology object for the creation of thin-film nanomaterials. The studied problem is the formation of interfaces in thin-film nanomaterials. The purpose of the article is to substantiate the discovery of nonequilibrium solid wetting layers, their uniqueness and their role in the formation of the above-mentioned interfaces. This is important research for nanomaterial technologies. A review and generalization of the results of the study of the metal–silicon interface obtained under identical conditions was carried out. The review shows the detection a new type of transition state of the film under nonequilibrium conditions, a solid wetting layer, and the generalization justifies its role in the formation of the interface. Solid wetting layers are important as a new concept for the development of the theory of thin film growth, as well as a new object of nanotechnology for the production of thin-film nanomaterials
Structural and optical properties of composition-graded InGaN nanowires
Authors: Gridchin Vladislav O. , Reznik Rodion R. , Kotlyar Konstantin P. , Kirilenko Demid A. , Dragunova Anna S. , Kryzhanovskaya Natalia V. , Cirlin George E. 
Published: June 2024

At the moment, InGaN ternary compounds are of a great interest for the development of devices for sunlight driven water splitting. However, the synthesis of such materials is hindered by the fact that InxGa1–xN layers are susceptible to phase decomposition at x from 20 to 80%. Nanowires can be a promising solution to this problem. The purpose of our study was to analyze the structural and optical properties of InxGa1–xN nanowires with a gradient x content being inside the miscibility gap. InxGa1–xN nanowires were grown on silicon substrates using plasma-assisted molecular beam epitaxy. The structural properties of nanowires were studied using scanning and transmission electron microscopy. The chemical composition and optical properties of nanowires were analyzed using energy-dispersive microanalysis and photoluminescence spectroscopy. It was shown for the first time that the composition-graded InxGa1–xN nanowires with x from 40 to 60% can be grown using plasma-assisted molecular beam epitaxy. The grown samples exhibit photoluminescence at room temperature with a maximum at about 890 nm, which corresponds to an In content of about 62% according to the modified Vegard’s rule and the transmission electron microscopy data. The obtained results can be of practical interest for the development of devices for water splitting induced by sunlight or sources of near IR radiation
Electronic structure of germanium dioxide with rutile structure according to ab initio computer simulation data
Authors: Manyakin Maxim D. , Kurganskii Sergey I. 
Published: June 2024

The article focuses on the electronic structure of the tetragonal crystalline modification of germanium dioxide. The electronic structure was theoretically studied by means of the full-potential linearized augmented plane wave method using the Wien2k software. Total and partial densities of electronic states were calculated. The spectra of the X-ray absorption near edge structure were simulated for various absorption edges of germanium and oxygen atoms. The Z+1 approximation method was used to calculate Ge K-, Ge L3- and O K absorption edges for the tetragonal modification of GeO2. The result obtained for the Ge K absorption edge is in good agreement with the experimental data. The Ge L3 spectrum was calculated for the first time, and the result is of predictive nature. In order to obtain a better agreement with the experimental calculations of the oxygen K absorption edge, besides the Z+1 approximation method, we also used the core hole method, including the simulation of a partial core hole. The study demonstrated that the use of a core hole with an electron charge of 0.7 results in a better agreement between the calculations and the experiment
GaN micro- and nanostructures selectively grown on profiled sapphire substrates using PA-MBE without lithography
Authors: Semenov Alexey N. , Nechayev Dmitii V. , Troshkov Sergei I. , Berezina Darya S. , Saud Abbas Arwa , Jmerik Valentin N. 
Published: June 2024

Purpose: Development of technology for the formation of ordered arrays of nanocolumns (NCs) of GaN microcrystals using plasma-activated molecular beam epitaxy from nitrogen (PA-MBE) on profiled sapphire substrates (SPS) of large diameter with a micro-cone profile. The proposed method eliminates the use of low-performance and expensive nanolithography methods. The article is aimed at a deeper understanding of the processes that determine the growth kinetics of III-N nanocolumns using PA MBE on patterned sapphire substrates with multiple orientations of various non-polar and polar planes. A new technological process for the fabrication of GaN NCs using PA-MPE is proposed, which ensures selectivity of their growth at the tops of PPS micro-cones and suppresses growth on the semipolar planes of these substrates. GaN NCs and microcrystals were grown using PA-MBE on commercially available PPS. A technology has been developed for the formation of discharged arrays of GaN nanocolumns without the use of lithographic procedures. Modes have been established that allow the formation of microcrystals and NCs with different diameters: from 30 nm to several microns. A diagram of the growth of GaN by the PA MBE method on PPS has been constructed, demonstrating the boundaries of the technological regimes for the formation of GaN NCs and microcrystals with different surface topography
Commentary on Frank et al.'s "Exploring the variability of musical-emotional expression over historical time"
Authors: Fiedler Daniel 
Published: June 2024

Music is often regarded as the 'language of the emotions' (Cooke, 1995), and since the early 20th century, empirical research into musical emotions has been conducted to explore the mystery of how they are evoked by music. In this context, Frank et al. presented an experimental study that examined the scarcely researched field of historical listening. Their study aimed to investigate the question, "Do modern listeners hear the emotional content in Baroque music that the composer intended to portray?". The results indicated that modern listeners placed the three modern excerpts in the expected quadrants of the valence-arousal space. However, there were significantly different valence and arousal ratings among the Baroque examples and the modern excerpts, and significant differences between paired examples (where Baroque and modern examples were expected to fall into the same quadrants) occurred. This commentary summarizes Frank et al.'s experimental study, discusses methodological considerations, and suggests possible refinements for future (experimental) studies on historical listening.
Aesthetic Education as an Important Area of Educational Work in Universities of the Ministry of Internal Affairs of Russia
Authors: Чешуйкина Т.Ю. 
Published: June 2024

Рассматриваются роль и значение эстетического воспитания в процессе проведения воспитательной работы среди обучающихся образовательных организаций МВД России в рамках морально-психологического обеспечения деятельности органов внутренних дел. Представлены теоретические аспекты эстетического воспитания, описаны формы и методы, используемые при проведении воспитательной работы. Выявлена взаимосвязь между формированием требуемых качеств сотрудников правоохранительной службы и задачами эстетического воспитания. Рассмотрены мероприятия, нацеленные на совершенствование эстетического воспитания курсантов Омской академии МВД России. Делается вывод о том, какие педагогические условия необходимо создавать для обеспечения эффективности процесса эстетического воспитания обучающихся вузов МВД России.
The role and significance of aesthetic education in the process of carrying out educational work among students of educational organizations of the Ministry of Internal Affairs of Russia within the framework of moral and psychological support for the activities of internal affairs bodies is considered. Theoretical aspects of aesthetic education are presented, the forms and methods used in carrying out educational work are described. The relationship between the formation of the required qualities of law enforcement officers and the tasks of aesthetic education has been identified. Activities aimed at improving the aesthetic education of cadets of the Omsk Academy of the Ministry of Internal Affairs of Russia are considered. A conclusion is drawn about what pedagogical conditions need to be created to ensure the effectiveness of the process of aesthetic education of students at universities of the Ministry of Internal Affairs of Russia.
The Scientific and Applied Signifiсance of the Teachings of K.G. Jung on Personality Typology
Authors: Азарнов Н.Н. , Мосолова С.С. 
Published: June 2024

Представлен обзор фундаментального учения К.Г. Юнга о психологических типах. Дается определение «интроверсии» и «экстраверсии» как ключевых понятий аналитической психологии. Приводится краткая характеристика восьми психотипов личности, предложенных К.Г. Юнгом. Показана актуальность данного учения, его значимость для науки и практики.
An overview of the fundamental teachings of K.G. Jung on psychological types. The definition of “introversion” and “extraversion” as key concepts of analytical psychology is given. A brief description of the eight personality psychotypes proposed by K.G. Jung. The relevance of this teaching, its significance for science and practice is shown.
WITHDRAWN: A Retrospective Study of Prevalence of Porcine Parvoviruses 6 in Guangxi, China and Its Co-Infection with Porcine Circovirus
Authors: Yu Ning , Yu Ziping , Chen Luer , Liu Yumeng , Feng Sheng , Zhuang Xinyu , Li Zhuoxin , Li Chenghui , Zhu Xiangyu , Zhang He , Wang Wei , Sun Wenchao , Jin Ningyi , Lu Huijin 
Published: June 2024

Abstract

The full text of this preprint has been withdrawn by the authors while they make corrections to the work. Therefore, the authors do not wish this work to be cited as a reference. Questions should be directed to the corresponding author.