bluuebunny/crossref_metadata_2025 huggingface dataset:
High thermoelectric performance of two-dimensional SiPGaS/As heterostructures
Authors: Shahid Ismail , Hu Xu , Ahmad Iqtidar , Ali Anwar , Shehzad Nasir , Ahmad Sheraz , Zhou Zhen
Published: March 2023

Thermoelectric technology holds great promise as a green and sustainable energy solution, generating electric power directly from waste heat.
Metadynamics simulations for the investigation of drug loading on functionalized inorganic nanoparticles
Authors: Motta Stefano , Siani Paulo , Donadoni Edoardo , Frigerio Giulia , Bonati Laura , Di Valentin Cristiana
Published: March 2023

A metadynamics study unravels the pH-triggered release mechanism and binding energy of the doxorubicin drug to TiO2 nanoparticles functionalized with TETT ligands.
Catalyst-free diboration and silaboration of alkenes and alkynes using bis(9-heterofluorenyl)s
Authors: Gilmer Jannik , Trageser Timo , Čaić Luis , Virovets Alexander , Bolte Michael , Lerner Hans-Wolfram , Fantuzzi Felipe , Wagner Matthias
Published: March 2023

9-Borafluorene-based diboranes and silylboranes spontaneously add to CC or CC bonds. Despite their different charge and bond polarization, key orbital interactions of substrate activation are identical for both valence isoelectronic derivatives.
What governs the spin distribution of very young < 1 Myr low-mass stars
Authors: Gehrig L. , Vorobyov E. I.
Published: March 2023

Context. The origin of the stellar spin distribution at young ages is still unclear. Even in very young clusters (∼1 Myr), a significant spread is observed in rotational periods ranging from ≲1 to ∼10 days.

Aims. We study the parameters that might govern the spin distribution of low-mass stars (≲1.0 M⊙) during the first million years of their evolution.

Methods. We compute the evolution and rotational periods of young stars, using the MESA code, starting from a stellar seed, and take protostellar accretion, stellar winds, and magnetic star–disk interaction into account. Furthermore, we add a certain fraction of the energy of accreted material into the stellar interior as additional heat and combine the resulting effects on stellar evolution with the stellar spin model.

Results. For different combinations of parameters, stellar periods at an age of 1 Myr range between 0.6 days and 12.9 days. Thus, during the relatively short time period of 1 Myr, a significant amount of stellar angular momentum can already be removed by the interaction between the star and its accretion disk. The amount of additional heat added into the stellar interior, the accretion history, and the presence of a disk and stellar winds have the strongest impact on the stellar spin evolution during the first million years. The slowest stellar rotations result from a combination of strong magnetic fields, a large amount of additional heat, and effective winds. The fastest rotators combine weak magnetic fields and ineffective winds or result from a small amount of additional heat added to the star. Scenarios that could lead to such configurations are discussed. Different initial rotation periods of the stellar seed, on the other hand, quickly converge and do not affect the stellar period at all.

Conclusions. Our model matches up to 90% of the observed rotation periods in six young clusters (≲3 Myr). Based on these intriguing results, we were motivated to combine our model with a hydrodynamic disk evolution code to self-consistently include several important aspects, such as episodic accretion events, magnetic disk winds, and internal and external photoevaporation. This combined model could replace the widely used disk-locking model during the lifetime of the accretion disk, and could provide valuable insights into the origin of the rotational period distribution of young clusters.
Numerical simulation of deformations of a specimen of a composite helicopter blade as part of a resonant vibration set-up
Authors: Fedorov D. , Shcherban K.
Published: March 2023

To determine the fatigue life of the tail rotor blade of a helicopter made of polymer composite materials (CM), a method of fatigue testing of the specimens of the blade with accompanied numerical modeling of the deformed state has been developed. The tests are carried out on a resonant vibration set-up, with simultaneous reproduction of a forcing harmonic transverse force and a constant longitudinal tensile force. The tests are carried out by a vibration loading mode equivalent in fatigue damage, which includes one level of variable load in the thrust plane and in the plane of rotation. The equivalent mode is formed based on the variable loading spectrum of the blade, which is obtained from the results of flight measurements of the loads on the tail rotor, as well as the repeatability of the expected operating conditions of the helicopter. The tests are accompanied by computational and experimental studies, which include finite element calculation of the stress state and modal analysis of the standard blade and the test specimen, as well as the strain measuring of the structure. According to the results of the research, the vibration loading modes are corrected.
Optimization of laser surfacing technological parameters to composite coatings WC/INC625
Authors: Zhavoronkova E. , Alekseev A. , Bazaleeva K. , Pakhomova S.
Published: March 2023

Single laser tracks of the WC/INC625 composition in a wide range of concentrations of the carbide phase obtained by laser surfacing at various values of the technological parameters of the process are studied. Based on the results of quantitative metallographic analysis, promising compositions of coatings were selected and intervals of technological parameters were established. The modes allowing to obtain objects without cracks, with minimal porosity and a given geometry of the laser track cross-section were determined.
Study of the curing process of epoxy-amine compositions by differential scanning calorimetry
Authors: Pavlukovich N. , Platonova E. , Polikarpova I. , Orlov M. , Storozhuk I. , Nelyub V. , Borodulin A.
Published: March 2023

The results of studying the process of curing epoxy resin ED-20 with various amine hardeners by differential scanning calorimetry are presented. The effectiveness of several tertiary amine curing accelerators has been evaluated. The completeness of curing of the epoxy resin and the stoichiometry of the compositions were evaluated by IR spectroscopy.
Rheological research of the curing processes of the epoxy-amine compositions based on ED-20 resin
Authors: Pavlukovich N. , Leshtaev A. , Buryakov V. , Polikarpova I. , Orlov M. , Storozhuk I. , Nelyub V. , Borodulin A.
Published: March 2023

In this paper the rheological properties of various epoxy-amine compositions based on the ED-20 epoxy resin were studied. The effectiveness of curing accelerators from among tertiary and quaternary amines has been evaluated. The rheokinetics of the curing processes were studied by the method of rotational viscometry. The times to reach the gel point of the studied systems are determined.
Preparation and properties of electrically conductive film nanocomposites
Authors: Makarova I. , Buzaeva M. , Segeev V.
Published: March 2023

This paper presents methods of obtaining film structures based on polyvinyl alcohol, polymethylmethacrylate with multi-walled carbon nanotubes on various substrates by pulling out of solution and drying with subsequent application of metal contacts. Test samples of polymer film structures with carbon nanotubes with curing in strong electric and magnetic fields for the orientation of with multi-walled carbon nanotubes in the polymer were prepared. The topography of the film surface was studied by atomic force microscopy. By treating nanotubes in a solution of iron chloride (III) and NaOH in diethylene glycol, their magnetic susceptibility is significantly increased, which makes it possible to equalize such "magnetic" carbon nanotubes in the polymer in magnetic fields with an induction of less than 0,5 T. The volt-ampere, C-V and noise characteristics of film structures at temperatures from – 60 ° C to 100 ° C and pressures up to 2 MPa were studied.
Application of repair composites as wear-resistant coatings
Authors: Ivanov V.
Published: March 2023

This article is devoted to reconditioning of working surfaces of equipment exposed to abrasive, corrosive, and cavitation wears. Importance of implementation of rational reconditioning methods at enterprises is discussed. The reasons and properties of wear types are listed, peculiar attention is paid to cavitation wear and its consequences. Classification of faults and reconditioning methods of worn working surfaces are described, it is proposed to use composite materials on polymer basis with various fillers; composite materials with ceramic fillers are more preferred as the most wear resistant ones and providing restoration of numerous wears of process equipment and pipelines. The article presents physicomechanical properties of compounds with ceramic fillers. In order to solve the formulated problems, practical proposals are given with regard to application of composite materials available at Russian market. The most suitable materials are determined on the basis of quality/price ratio. Examples of performed activities are given, economic efficiency of reconditioning using composite materials is highlighted. Major advantages of the proposed technology are described.
Protection of threaded connections against corrosion
Authors: Fadeev I.
Published: March 2023

The paper presents data on the effect of the addition of D-10TM oligomer in the composition of standard lubricants for processing threaded connections on the degree of corrosion damage, the value of the torque for unscrewing and the value of friction coefficient in threaded connections. The addition of D-10TM oligomer 5% by weight in Litol-24 helps to reduce the torque for unscrewing threaded joints by 1.5-1.7 and 1.3-1.4 times in comparison with G-SKa 2/6-2 Grease and Lithol-24 respectively, therefore, reduces the coefficient of friction in threaded connections by the same amount. When examining the threaded part of fasteners after disassembling the joints pre-treated with the developed composition, traces of corrosion appear only after 720 hours, and in joints treated with G-SKA 2/6-2 Grease and Lithol-24 – after 96 hours. Production tests showed that the developed composition improves the disassembly of the threaded connection by 1.3-1.4 times in comparison with factory processing. The improvement of the protective properties of the composition with the addition of the D-10TM oligomer is explained by the fact that the D-10TM oligomer, having polar urethane groups in the chain and a high molecular weight, exhibits strong intermolecular interactions due to the formation of hydrogen bonds. Its three-dimensional spatial structure provides better filling of cracks and gaps in the threaded joint, seals them, isolates them from aggressive environments and thus provides better protection against corrosion.
Differential properties of polar codes
Authors: Shalin Georgiy , Pokamestov Dmitriy , Kryukov Yakov , Shinkevich Artem , Brovkin Andrey , Rogozhnikov Eugeniy
Published: March 2023

This paper discusses the features of polar coding as a differential encoder for a binary erasure channel. One of the modern methods of error-correcting coding is polar codes, which has great prospects in the development of current and future wireless communication systems. At the moment, polar coding is used only in fifth-generation systems. In this paper, a description of polar coding is presented, a description of a polar decoding algorithm capable of restoring messages with an error probability close to 1 is presented, and a general model of a binary channel with erasures is described. The channel model represents a fixed number of introduced errors, depending on the size of the transmitted message. The result of the study is the dependence of the bit-error ratio (BER) on the error probability for low, medium and high code rates, which illustrate the possibility of the polar coding algorithm to restore a message with a partially or completely inverse data stream.
Cure modeling and optimization of the composition of the polymer matrix for magnetostrictive composites
Authors: Bormotov Alexei
Published: March 2023

The paper explores the curing processes of unfilled epoxy resins ED-16. Mathematical modeling of curing processes has been performed and mathematical models of curing processes are presented in the form of full quadratic polynomial models. Separately, the degree of curing of unfilled epoxy compositions is studied. As a result of exploring the obtained models and performing optimization procedures for the ED-16 resin, theoretical aspects of curing high-viscosity epoxy systems were developed and recipe-technological parameters for obtaining a high-strength polymer matrix based on the high-viscosity ED-16 resin were proposed, which makes it possible to obtain epoxy composites with specified parameters structures and properties.
The advanced defuzzification methods of the convex α – cut fuzzy sets
Authors: Gadjiev Djavanshir , Rustanov Aligadzhi , Kochetkov Ivan
Published: March 2023

The main features of the fuzzy sets and their corresponding membership functions were presented in terms of the fuzzification process and further by the de-fuzzification operation. The convexity of the α -(alfa) cuts of the fuzzy sets is used in the decomposition of the fuzzy sets. The alfa cuts of the fuzzy sets were defined precisely in terms of the pair of functions and their lowest upper and greatest lower bounds. The convex combination of the intervals of the sub-regions of the fuzzy sets and their membership function were considered as the points of the defuzzified values of the fuzzy sets. The methods of the de-fuzzification to the crisp sets were presented by the formulas to find the defuzzification regions and de-fuzzified values. The compositional concepts of the inference as the expansion of the extension principle were introduced to formalize further the fuzzy reasoning by the set of fuzzy rules based on the approximate reasoning.
On Soft SIgδs-closed sets
Authors: Rosemathy Y. , Alli K. , Thanigasalam T. , Rajesh E. , Senthil Kumar R.
Published: March 2023

In this paper, we introduce some new notions called soft SIgδs - closed sets, soft SIgδs - open sets. We obtain several characterizations and some of their properties. Also, we investigate its relationship with other types of sets. 2010 Mathematics Subject Classification. 54A10, 54A20, 54C08.
Improving the methodology for predicting the yield of walnuts in farms based on econometric models
Authors: Inobatov Abror , Ziyadullaev Ilkhom
Published: March 2023

Agrarian reforms carried out in the agriculture of the republic, along with the development of production sectors, provide for the diversification of products, the development of new areas, as well as the expansion of previously unclaimed areas on the world market, but today the demand for which is growing. At the same time, the effective use of the opportunities of farms and family household plots is of great importance. Given the importance of the walnut, which is in high demand on the world market, one of the modern requirements is to further stimulate and increase the efficiency of the use of rain fed lands in the republic, the widespread introduction of scientifically based methods and intensive technologies for growing walnuts and the creation of modern walnut plantations with an increase in production competitive in the domestic and foreign markets for walnuts. In the course of a survey of farms and household plots of the district, it was noted that by placing new varieties of walnut, it is possible to obtain a good income, long-term return on investment, low cost. The article describes the results of research in important areas, based on the characteristics of the current stage of development of walnut cultivation in farms.
Analysis of the possibility of production processes based on modern methods
Authors: Khakimov Dilmurod , Nosirova Nilufarkhan
Published: March 2023

Comprehensive measures are being implemented aimed at ensuring the comprehensive integration of production enterprises into world markets, increasing the quality and competitiveness of manufactured products, improving the quality management system and product production processes. This article discusses the main essence of the analysis of production processes at engineering enterprises based on statistical methods and the possibility of improving the effectiveness and efficiency of processes based on the fulfillment of the requirements for them. Statistical control of processes by monitoring the description of processes and products, focusing the possibility of processes on the creation of a quality product with a uniform demand, identifies the working procedure for managing the processes of constant production technology and allows to increase the efficiency of the process possibility. Statistical process control is not about checking whether parts are in good condition or not, but about anticipating and trying to prevent the production of poor quality parts. This is done by using control charts as a predictive tool to identify potential inconsistencies.
Estimation of the throughput capacity of the core grain shredder
Authors: Bulatov S. , Nechaev V. , Nizovtsev S. , Aleshkin A. , Sergeev A.
Published: March 2023

The relevance of the chosen topic is formulated in the article, a milling grain shredder is proposed. calculations of the productivity of the milling grain shredder are given. Theoretical studies have determined the grain supply through the chopper loading window during the movement of the milling cutter tooth in the loading window area. Grain feed along the milling cutter axis is calculated. It was found out that the main limiting parameter in terms of productivity is the grain supply along the axis of the milling cutter. For the developed shredder, the theoretical productivity is calculated, which varies from 90 to 100 kg/h with an increase in the angular velocity of the cutter from 185 rad/s to 206 rad/s
Composition and location of trophic groupings of zoobenthos in the Arctic Ocean
Authors: Ivanova E.
Published: March 2023

This study is devoted to the distribution of trophic groups of zoobenthos in the Arctic Ocean. The patterns of distribution of detritus feeders, seston feeders, and predators along the bottom of the Arctic polar basin are analyzed. The object of the study is the geoecology of the distribution of food groups of benthic animals in the polar regions. The subject of the study is the methods used in assessing the distribution of zoobenthos with different types of nutrition in the polar regions. The results of the work are based on the analysis of the vertical and horizontal structures of the distribution of benthic fauna, reflected in the map of the distribution of trophic groups of zoobenthos and systematized in the distribution table of the leading species of zoobenthos in the Arctic Ocean. To assess the patterns of geoecological distribution of zoobenthos according to the method of feeding, the following were used: actual and cartographic scientific data on the relief, soils, waters, ice cover, maps on the distribution of plankton and the content of organic matter in bottom sediments, as well as data on the trophic characteristics of the benthic fauna of the polar regions, leading biocenoses of the polar regions and geoecological conditions for the existence of benthic fauna in the polar regions. This article presents a map of the distribution of zoobenthos in the Arctic Ocean (according to literary sources), developed by the author, and a table of distribution of guide species of zoobenthos trophic groups in various areas of the Arctic Ocean, compiled by the author based on literary sources. The obtained results of the distribution of food groups of zoobenthos can be used in further detailed assessment of food reserves of bioresources in the polar regions of the World Ocean and their consumption; when designing the economic development of the polar regions; during landscape monitoring.
The problem of the energy sector to modern technologies in the field of generation
Authors: Borisov Alexey , Mironov Nikolay
Published: March 2023

Within the framework of this work, the analysis of the existing dynamics of changes in the structure of world states at the current stages is carried out. The main reasons and factors that contributed to these changes are given, and the main comparative characteristics of traditional and non-traditional generating facilities are considered. It also provides examples of the advantages and opportunities that the energy sector will receive in the transition to the use of renewable energy sources. Special attention is paid to the problem of insufficient speed of reorientation of the energy sector of the to modern technologies in the field of generation. The results of the analysis of changes in the structure of the world energy at the current stages are also presented.
Optimization of university teachers’ remuneration as a tool for sustainable development of higher education
Authors: Bogatyreva Irina , Ilyukhina Larisa , Bogatyrev Alexey
Published: March 2023

The article is devoted to the study of problems and ways of their solution in the field of remuneration of scientific-pedagogical workers of higher education institutions. In modern pandemic realities the process of education is organized in a new format with the use of information and innovation technologies, which requires from a teacher additional labor inputs for mastering special tools and practices of teaching. That is why development of new approaches to labor remuneration for university teachers that meet modern requirements of economics acquires special significance at the present time. Therefore, the purpose of the study is to analyze the organization of teaching staff labor remuneration on the example of one of the universities in Samara region (Russian Federation) and to develop recommendations for its improvement. The results of the study are based on the study of domestic and foreign scientific literature on the remuneration of higher education teachers, the authors' own materials. The authors of the article systematized the stages of decision making on the problems of increasing the level of higher education institution personnel wages in Russia, performed a comparative analysis of average wages of university lecturers and hired employees of organizations in some subjects of RF in 2014 - 2019, presented an algorithm of building the scale of official salaries of the teaching staff, and proposed and justified specific recommendations for improving the basic part of the wages of the teaching staff.
Marine environmental protection in mineral resource development in the arctic zone of Russia
Authors: Yakovleva Tatyana
Published: March 2023

International and environmental law in Russia does not provide a preventive and precautionary approach to forestall degradation of the marine environment and the "polluter pays" principle at the present stage. The author proposes supplementing international environmental law in the investigated area with an approach based on the principle that the polluter not only pays but also restores. Improvement of approaches and principles of international law will be the basis for changing Russian legislation and legislation of other countries in order to prevent degradation of the marine environment. After an oil spill, the coastal waters of the seas and their ecosystems are the most vulnerable; therefore, the national legislation of states is primarily interested in legal regulation of marine environmental protection in case of oil and petroleum product spills. The legal obligation on oil and gas producing companies to carry out measures to remediate the marine environment will require them to finance scientific research, search and develop new technologies for the safe development of subsoil resources and restoration of the marine environment. This study is a comprehensive analysis of the scientific research results in the field of biology, environmental protection, protection of water bodies, marine environment, as well as international and Russian environmental law governing relations in the field of marine environment protection during the development of mineral deposits on the continental shelf, internal sea waters, in the territorial sea and the adjacent zone of the Russian Federation.
Scenario modeling of groundwater filtration in a enclosing tailings dam of a mining enterprise
Authors: Kalashnik Nadezhda
Published: March 2023

Scenario hydrogeomechanical 3D modeling of groundwater filtration through the body of the enclosing tailings dam of a mining enterprise was carried out. A hydrogeomechanical 3D model of the tailings dam was created and modeling of filtration-deformation processes was carried out according to three scenarios for the position of the depressed surface of groundwater: the actual state, the limit according to the project, and the maximum filling with water. The calculated values of the rate of water filtration through the body of the enclosing dam are determined for the simulated scenarios of the position of the depression surface. A graphical dependence of the filtration rate on the position of the depression surface of groundwater is revealed, and an analytical expression approximating it is found.
Evaluation of the dynamic behavior of buildings and structures by generalized oscillators
Authors: Kulikov Vladimir
Published: March 2023

The paper considers aspects of the reactive behavior of structural elements of large-panel housing construction. The problem of determining the position in space of the material point (center of mass) of the objects under study is solved, thus allowing us to evaluate the kinetics of the behavior of structural elements as a whole. New original calculation schemes are proposed, relative to all spatial axes, for determining dynamic reactions in the connections of structural elements under pulsed dynamic action on buildings and structures. A system of local oscillator forces balanced by inertial internal and external influences has been compiled by the method of kinetostatics. The interpretation of the behavior of structural elements of buildings using various oscillators is proposed. This interpretation made it possible, using periodic harmonics, to quantify the change in kinetic energy of structural elements as a result of their impact on each other due to external pulsed dynamic influences. An algorithm for determining dynamic reactions in the junctions of structural elements of buildings and structures has been developed and presented.
Coastal-marine and legacy placers of the southern Primorye (Russia): ecology and commercial exploitation
Authors: Molchanov Vladimir , Yudakov Alexander
Published: March 2023

The article is devoted to the development of technology for reenrichment of waste from the exploitation of old gold-bearing placers that pose a significant threat to the environment. Technogenic and coastalmarine placers of the south of Primorye (Far East, Russia) were chosen as the object of research. At the same time, methods of powder metallurgy, as well as leaching of precious metals and metallic mercury with thiocarbamide-thiocinate solutions with their simultaneous demercurization were used. The application of this scheme for the extraction of useful and toxic components from placer material will allow to involve in industrial circulation numerous man-made and beach placers of the south of the Russian Far East in compliance with resource-saving principles and environmental aspects.
Paraffinic oil residues after heating as a basis for fuel
Authors: Zvereva Elvira , Makarova Anastasiya , Ilyin Nikolay , Ageeva Marina , Turanov Alexander , Zueva Olga
Published: March 2023

The possibility of reuse of heavy residues (oily sludge) of low-sulfur, highly paraffinic Mangyshlak oils as a basis for fuel with improved environmental characteristics for engines to marine, river and railway transport, gas turbine and boiler plants, steam boilers and industrial furnaces was shown. A variant of the joint application of the methods of nuclear magnetic resonance, laser confocal microscopy and rheology for study of micro- and mesoscopic structure and some physicochemical properties of crude oil products has been developed. It has been shown that preliminary heating to 90 ° C leads to disruption of the structure and hydrogen bonds between oil associates and complexes, increasing sample homogeneity due to precipitation of solid impurities, partial removal of water content, air bubbles and dissolved gases. The addition of medium distillate diesel fractions to preliminary heated oil residues will make it possible to obtain a higher quality version of the fuel with a reduced resinous and asphaltene substances, lower pour point, good energy content and low sulfur content. Thus, valuable energy-containing raw materials can be reused. It should also be noted that the reuse of accumulated oil waste will reduce the harmful effects of landfills, will preserve the natural landscape, and will cut the cost of extracting natural resources.
Challenges in developing integrated transport space over the world economic integration associations
Authors: Komov Mikhail
Published: March 2023

Institutional, organisational, managerial, and financial problems typical for the development of transport systems of regional integration associations, major transport and logistics projects, such as EU or BRI, have been systematised by the author. The interrelation of the highlighted problems from the point of view of limitation of maximization of efficiency of transport and logistics processes and functioning of the unified transport system as a result of their influence is shown. Particular attention is paid to managerial, financial and economic problems in the sphere of transport integration.
Development of an automated sand supply system for places of technical inspection of locomotives
Authors: Volchek Tatyana , Tomilov Vyacheslav
Published: March 2023

To increase labor productivity is one of the most important tasks of the branch strategic document of JSC "Russian Railways". The article describes the existing system of sand supply to the locomotive at the places of technical inspection of locomotives (PTIL), its shortcomings are revealed. At present, this system has been outdated and it does not meet the requirements of the modern logistics and the organization of railway operation. To solve this problem, an automated system of sand supply to the locomotive based on a rotary level gauge and a slide gate with a pneumatic drive has been developed, which will eliminate the disadvantages of the typical system, which will increase labor productivity.
Digital technologies in managing the competitiveness of commercial real estate
Authors: Pirogova Oksana , Zasenko Vilena
Published: March 2023

Currently, technological progress does not stand still and affects both the economy and society as a whole. The real estate market, like the economy as a whole, is subject to digital transformation: the use of new technologies is growing both in design, construction, and in real estate sales. The purpose of the study is to analyze the implementation of technologies in construction and assess the prospects for their introduction into the real estate market. To achieve this goal, the following tasks have been set: study and analysis of future technologies in construction; identification of positive aspects for the sphere from implementation; identification of barriers to implementation at the moment. Research methods include monitoring modern technologies; market research and analysis; modeling of the real estate market. The study examined the impact of innovation and technology on the real estate market. Possible prospects for the modernization of the market are considered and the given examples of innovative technologies are evaluated. The main reasons necessary for the introduction of innovations are revealed, their effect is assessed both for construction companies and for end users. The analysis of the impact of the implemented technologies on the real estate cost (construction cost) and service life is carried out. The main advantages of the introduction of technologies are highlighted, as well as the barriers to their implementation.
Ecological theory of concepts as cognitive models of objective reality
Authors: Kuzminova I. , Zhivotkova I.
Published: March 2023

The relevance of this study is due to the fact that the categories “concept” and “concept” require additional theoretical understanding due to a wide range of terminological interpretations – from stratificationally independent functional essence to synonymization (and even identification). We consider the well-known postulate about the integral, systemic interaction of units of language and culture and their correlation to be the most justified. At the same time, the purpose of this article is to define the external world through the use of language, its functions and motivation for action. Researchers are interested in questions related to the actual functioning of cultural models, why they appear optimal in thought processes and help to present cognitive tasks as a “means of navigation”. For the concept of this study, one of the obligatory features of a linguocultural concept is its verbalization and a set of integral and differential features in its composition. The authors came to the conclusion that the linguistic and cultural specificity of cognition is revealed in the necessary way and in the most optimal way only through linguistic analysis, and cultural knowledge is an essential set of propositions.
Geoecological aspects of rationing when creating energy facilities in Russia
Authors: Belyaev Valery
Published: March 2023

The object of the research underlying this article is the geoecological issues of the creation of energy facilities in Russia, and such issues are considered in the aspect of rationing. These issues have not been studied enough, while their relevance is associated with the large-scale negative impact of energy facilities on the natural environment, as well as with the designation of state rationing as one of the leading areas of research within the scientific specialty “Geoecology”. The purpose of the work was to identify the features of “geoecological rationing” in Russia by the example of the creation of energy facilities. To achieve it, the current situation concerning the geoecological aspects of rationing when creating energy facilities is considered. The stages and main problems of the formation of geoecology as a science in Russia are described (the national uniqueness of this phenomenon is emphasized). The directions of geoecological research that are relevant from the point of view of creating energy facilities, including the justification of state rationing, are highlighted. The main documents on standardization, the subject area of which affects the considered sphere of urban planning activity, are analyzed. The conclusion is made about the insufficient effectiveness of the considered documents in the geoecological aspect. The main problems of environmental regulation and standardization in the field of higher professional education in the field of “geoecology” are also identified. To rectify the situation, options are offered for performing systematic scientific studies, the results of which will be used, among other things, to update the documents under consideration.
Features of teaching students of technical universities in the field of ecology and environmental health
Authors: Kolesnikova Olesya
Published: March 2023

This article discusses the possibilities of training in the field of ecology and environmental safety at a technical university. When learning a foreign language, environmental health students may encounter difficulties. Some of the psychological difficulties they may face are listed
in detail. To overcome the difficulties that have arisen, methods of increasing motivation for learning are considered. When teaching, it is
necessary to take into account the importance of environmental education of students. The article describes what difficulties a student and a teacher may encounter when studying the topic of ecology. The method of associations, which have recently begun to be seriously considered by teachers, is described in detail. Examples of vocabulary are given that make it possible to master this method of work when studying vocabulary
in classes devoted to the conservation and management of natural resources.
Algorithm for emergency deletion of files by voice command
Authors: Komotsky Roman , Boldyrikhin Nikolay , Karpenko Mikhail
Published: March 2023

The Currently, there is a growing interest in various methods and means of protecting information, which is due to the growing number of crimes related to the violation of confidentiality of information, including through physical access to a computer. There are many ways to protect information from unauthorized access, such as physical security measures, password protection, and so on. However, a situation may arise when all defense lines have already been overcome and there is no other way to quickly block or destroy confidential information in any other way than with the help of a voice command. Thus, the topic of the article is relevant. The object of research is an information system containing confidential information. The subject of the research is the methods of emergency deletion of confidential information. The purpose of this article is to develop an algorithm for urgent deletion of files by voice command. In the course of the work, the algorithm for the emergency deletion of files by voice command was developed, which allows blocking the means of inputting information (keyboard and mouse) and deleting files located in a predetermined folder. The algorithm provides protection against accidental pronunciation of a voice command: before deleting files, a timer is first started, the time of which is pre-set by the user. During the duration of the timer, it is possible to cancel the deletion of files by entering a password, however, there is no way to access the information until the appropriate password is entered.
The model of informative ordering in the analysis of socio-psychological processes
Authors: Pichugin Yury , Ivashova Valentina , Chudnova Olga , Nadtochiy Yulia , Makhova Irina
Published: March 2023

The article presents the possibilities of informative ordering in the analysis of socio-psychological processes. We carried out a brief review of publications covering the use of mathematical apparatus in sociological and psychological research. The main groups of research strategies that have found application in the study of modern socio-psychological processes are identified. We substantiated the necessity and advantages of using the method of information ordering. In our research we described the stages of application of the proposed method, the mathematical apparatus based on the main components, estimates of structural similarity and the amount of information. The developed model of informative ordering can be used to determine the significance of information obtained in the course of sociological, psychological, social, economic and other types of research, where information about the state of the object and subject of research is organized in the form of variational series.
Industry 5.0 and human capital
Authors: Lykov Daniil , Razumowsky Alexei
Published: March 2023

Industry is a key factor in economic development. We are on the approach of a new paradigm - Industry 5.0. This study briefly discusses the main driving forces and means that contribute to the introduction of this new paradigm, then examines the role of man in it, as well as human responsibility and control, in comparison with the classic robots and cobots, which the new Industry is talking about. In conclusion, the main features and the problems of Industry 4.0 and innovations related to the transition to Industry 5.0, as well as the ethical component of the transition and the formation of a human capital as a core value.
ABO-incompatible orthotopic heart transplant: a case report
Authors: Strickland Ashlyn , Chianella Dafne Andrea , Kavarana Minoo , Savage Andrew
Published: March 2023

Background: ABOi heart transplant has become routine for the majority of children <2 years old. An 8-month-old child with complex congenital heart disease presented to the Medical University of South Carolina Shawn Jenkins Children’s Hospital in need of transplantation. Methods: This case report describes the use of ABOi transplantation and describes the details of the total exchange transfusion prior to cardiopulmonary bypass. Results: After a successful intraoperative total exchange transfusion following the ABOi protocol, the patient’s isohemagglutinin titers were 1 VC on postoperative day (POD) 1, and isohemagglutinin titer was <1 VC on POD 14. The patient had no signs of rejection and continued to recover. Conclusions: Successful ABOi transplantation requires planning, an interdisciplinary approach, and clear closed-loop communication. Planning with the surgical and anesthesia teams is necessary for the hemodynamic stability of the patient during the total volume exchange as well as precautions put in place to ensure the blood products used in this procedure are correct. Planning with the lab and blood bank is also necessary to ensure they are prepared with enough blood products and can run isohemagglutinin titers.
Literaturübersicht zu Veränderungen der Zehennägel bei chronischer venöser Insuffizienz
Authors: Kiehl Lisa , Ellebrecht Lena-Henrike , Recke Anna Lena , Kahle Birgit
Published: March 2023

Das Patientenkollektiv einer phlebologischen Sprechstunde weist häufig pathologisch veränderte Zehennägel auf. Es stellt sich die Frage, ob ein Zusammenhang zwischen chronischer venöser Insuffizienz und einer Onychodystrophie besteht. Denkbar sind sowohl nichtmykotische Nagelwachstumsstörungen als auch eine Prädisposition für Onychomykosen durch eine Minderperfusion im Rahmen der venösen Insuffizienz. Die wenige Literatur, die es zu dieser Thematik gibt, zeigt unterschiedliche Ergebnisse, welche hier genauer erläutert werden.
Natural History of Varicose Veins of the Legs
Authors: Kern Caroline , Rabe Eberhard , Schuldt Katrin , Kowall Bernd , Stang Andreas , Bock Eva , Lattimer Christopher , Jöckel Karl-Heinz , Pannier Felizitas
Published: March 2023

Objective To assess the natural history of saphenous and non-saphenous varicose veins using the results of the Bonn Vein Studies and data published in literature.

Methods We used the data of the Bonn Vein Studies (BVS) 1 and 2 to assess if preexisting non-saphenous varicose veins (NSVV) in persons who had no saphenous varicose veins (SVV) at baseline have an impact on the incidence of SVV during the follow-up of 6.6 years and vice versa. SVV where defined as tortuous or not-tortuous refluxing saphenous veins. The statistical evaluation was performed using SAS version 9.4 (SAS Institute, Cary, North Carolina). In addition, we performed a review of publications concerning the natural history of varicose veins (VV) using PubMed.

Results In the BVS the overall incidence of SVV within the follow-up time of 6.6 years was 8.0 % (n = 133 of 1661; 95 % CI: 6.8–9.4). 7.2 % (n = 107 of 1492) without VV in BVS 1 and 19.8 % (n = 26) of patients with preexisting NSVV developed SVV. The relative risk for the development of SVV in patients with preexisting NSVV was 2.44 (95% CI: 1.64–3.64) adjusted for age and sex. The overall incidence of NSVV was markedly higher with 13.3 % (n = 226 of 1661; 95 % CI: 11.8–15.1). During follow-up 148 patients (9.9 %) without VV in BVS 1 developed NSVV. 48.5 % (n = 78) of patients with preexisting SVV developed NSVV during follow-up. The relative risk for the development of NSVV in patients with preexisting SVV was 4.10 (95% CI: 3.26–5.16), adjusted for age and sex.

In published studies the development of VV is preceded by venous reflux. Initial VV may develop at any segment and the results from literature suggest that the location of VV and reflux at the time of the investigation depends on age. In younger individuals more distal location are reported with an ascending progression in the majority but also descending progression is possible.

Conclusions Based on the results of the Bonn Vein Studies 1 and 2 we could demonstrate, that preexisting SVV increase the risk of developing NSVV and preexisting NSVV increase the risk of developing SVV in a similar way. Venous reflux may initially occur in any segment of the venous system and may progress in antegrade and/or retrograde fashion. In younger adults initial VV seem to be localized more often in distal parts of the legs with an antegrade progression over time.
Neue Strategien beim frühen und fortgeschrittenen Rektumkarzinom
Authors: Kolac Corinna
Published: March 2023

Der jüngste Kongress „Viszeralmedizin“ der Deutschen Gesellschaft für Gastroenterologie, Verdauungs- und Stoffwechselkrankheiten (DGVS) widmete sich den Chancen und Risiken der Zentralisierung und der interdisziplinären Zusammenarbeit zum Wohle der Patienten. Als Paradebeispiel hierfür diskutierten Experten über neue endoskopische und nichtchirurgische Konzepte der Therapie des frühen und fortgeschrittenen Rektumkarzinoms wie der totalen neoadjuvanten Therapie (TNT).
Fertilitätserhalt nach gonadotoxischer Krebstherapie
Authors: Bubenzer Rainer H.
Published: March 2023

Auf einer Pressekonferenz der Deutschen Stiftung für junge Erwachsene mit Krebs (DSfjEmK; www.junge-erwachsene-mit-krebs.de) betonte Prof. Mathias Freund, Rostock, dass für junge Menschen mit Krebs eine Lebensperspektive mit der Möglichkeit der Familienplanung und eigenen Kindern an 2. Stelle der Lebenszufriedenheit steht. Betroffene und Experten diskutierten auf der Veranstaltung der Stiftung, ob der vor 3 Jahren möglich gewordene Fruchtbarkeitserhalt als Teil der Krebsbehandlung tatsächlich in der Lebenswirklichkeit der Betroffenen angekommen ist.
Gastrointestinale Tumoren
Authors: Bischoff Angelika
Published: March 2023

Gastrointestinale Tumoren haben in den letzten 10 Jahren überdurchschnittlich von der onkologischen Therapieforschung profitiert. Und die Pipeline ist weiterhin gut gefüllt. Prof. Dominik Modest, Charité Universitätsmedizin Berlin, stellt auf einem Fachpresseworkshop interessante Studien zum kolorektalen Karzinom, Pankreaskarzinom und hepatozellulären Karzinom vor.
Artificial intelligence for the classification of focal liver lesions in ultrasound – a systematic review
Authors: Vetter Marcel , Waldner Maximilian J , Zundler Sebastian , Klett Daniel , Bocklitz Thomas , Neurath Markus F , Adler Werner , Jesper Daniel
Published: March 2023

Focal liver lesions are detected in about 15% of abdominal ultrasound examinations. The
diagnosis of frequent benign lesions can be determined reliably based on the characteristic
B-mode appearance of cysts, hemangiomas, or typical focal fatty changes. In the case of focal
liver lesions which remain unclear on B-mode ultrasound, contrast-enhanced ultrasound (CEUS)
increases diagnostic accuracy for the distinction between benign and malignant liver lesions.
Artificial intelligence describes applications that try to emulate human intelligence, at
least in subfields such as the classification of images. Since ultrasound is considered to be
a particularly examiner-dependent technique, the application of artificial intelligence could
be an interesting approach for an objective and accurate diagnosis. In this systematic review
we analyzed how artificial intelligence can be used to classify the benign or malignant nature
and entity of focal liver lesions on the basis of B-mode or CEUS data. In a structured search
on Scopus, Web of Science, PubMed, and IEEE, we found 52 studies that met the inclusion
criteria. Studies showed good diagnostic performance for both the classification as benign or
malignant and the differentiation of individual tumor entities. The results could be improved
by inclusion of clinical parameters and were comparable to those of experienced investigators
in terms of diagnostic accuracy. However, due to the limited spectrum of lesions included in
the studies and a lack of independent validation cohorts, the transfer of the results into
clinical practice is limited.