bluuebunny/crossref_metadata_2025 huggingface dataset:
Placement and Use of Labor of Prisoners of War of the NKVD-Ministry of Internal Affairs of the USSR Camp No. 362 During the Restoration of Stalingrad
Authors: Sidorov Sergey ,   Volgograd State University
Published: July 2024

Introduction. After the end of the Great Patriotic War, the number of prisoners of war in Stalingrad doubled, and new NKVD camps for industrial purposes were created, including Krasnooktyabrsky No. 362. Methods and materials. Historical facts are investigated on the basis of the principles of historicism and objectivity. The article uses problem-chronological and comparative-historical methods. The article is based on documents of the NKVD-Ministry of Internal Affairs of the USSR, the Main Directorate for Prisoners of War and Internees of the NKVD-Ministry of Internal Affairs of the USSR, and institutions for prisoners of war and internees of the Stalingrad region. Analysis. Prisoners of war at Camp No. 362 were used in the work of the main construction trusts restoring industrial enterprises and housing facilities in the central and northern parts of Stalingrad. The number of the camp’s contingent for 1945–1947 increased from 7,943 people to 13,715 people, and the share of workers in production increased. Results. For 1945–1949, enterprises transferred more than 125 million rubles to the camp for the work of prisoners of war. The total cost of the work performed by the contingent of Camp No. 362 amounted to about 400 million rubles. This allowed approximately 4.5% to reimburse the cost of losses incurred by the city during the war years.
“...During the War Years, His Famous ‘Akmolinka 1’ Fed Hundreds of Thousands of People With Bread”: Scientist from Leningrad in Northern Kazakhstan
Authors: Mussagaliyeva Arailym ,   Eurasian National University, Mussabekova Roza ,   Eurasian National University
Published: July 2024

Introduction. Based on the new archival documents of the State Archives of Akmola region, the article examines the activities of the famous breeder and exiled scientist of the All-Union Institute of Plant Industry, Doctor of Sciences (Agriculture), Valentin Kuzmin, during the Great Patriotic War. Solving food problems in Northern Kazakhstan was very relevant, and it had been on the agenda for a long time. During the Great Patriotic War, this region remained deep in the rear. Breeder V. Kuzmin and other employees of the Shortandy Agricultural Experimental Station in wartime strove to speed up breeding and research work and create new, resistant varieties for the Kazakh steppe. During these years, V. Kuzmin provided the whole of Northern Kazakhstan with new varieties of agricultural crops, as well as other regions of the republic. At the station, soft and durum wheat varieties were bred, as well as varieties of potatoes, sunflowers, millet, poppy, lentils, chickpeas, and peas that were productive and resistant to growing in steppe areas. Methods and materials. Used documents of the State Archives of Akmola region, previously not introduced scientific turnover. In the course of the study, the principles of historicism, scientific objectivity, and consistency were used. Analysis. The article describes in detail a widely used new wheat variety, resistant to the steppe zone of Akmolinka 1, produced by V. Kuzmin. This variety was known throughout Kazakhstan; in the literal sense of the word, it saved the people from famine. People, in gratitude, still remember and talk about it. And also, an important role in the war years was played by several varieties of potatoes, which were useful in their qualities, and it was they who provided the population of Kazakhstan with the most important food product during the war. The work carried out by the scientist Kuzmin shows his greatest contribution to saving people from hunger during the harsh years of the war. Results. In the course of the study, on the basis of new statistical data, we were able to present the crops of the Akmola region and other regions of the republic with selections of varieties from the Shortandy agricultural experimental station. And also, a short excursion was conducted on the results of selection work in the post-war years. Particular attention is paid to the zoning of various crops and obtaining copyright certificates and other awards for breeding new varieties of grain and oilseeds by the breeder V. Kuzmin. Authors’ contribution. A.S. Mussagaliyeva carried out the general management of the study, formulated the main results, and edited the final text; R.M. Mussabekova performed the interpretation of sources, a literature review, and wrote the text of the article.
Crimean War, John Arthur Roebuck and Public Opinion in the Great Britain in the Middle of the 19th Century
Authors: Klochkov Victor ,   Kuban State University, Nazarova Veronica , Uznarodov Igor ,   Southern Federal University,   Rostov State University of Economics
Published: July 2024

Introduction. The key issue of this work is the relationship between the press, public opinion, and political institutions of Great Britain during the Crimean War (1853–1856). In this context, the political activity of the Sheffield radical John Arthur Roebuck (1802–1879) is considered. The relevance of the work is determined by the research thesis that, during the Crimean War, public opinion was no longer only broadcast by the press but was largely shaped by it. Methods. The broad research context of the article is provided by a critical method of processing sources, some of which (publications from the provincial newspapers Sheffield and Rotterham Independent and Iris), discovered in the Northamptonshire Record Office, are being introduced into scientific circulation for the first time. Analysis. The goal of this article is to clarify the thesis well-established in traditional historiography, according to which the influence of the press on the current political agenda became significant only in the late 1860s. The analysis done in the article shows that if in the mid-30s of the 19th century the press only broadcast the opinion of the political elite, then during the Crimean War it already had the most direct influence on the formation of British public opinion. Results. The result of the study was the thesis that by the end of the Crimean War, the British press was quite able to influence public opinion and, even under certain circumstances, determine it. However, it still had very limited influence when it came to measures affecting the prerogative powers of Parliament and the Cabinet. Authors’ contribution. V.V. Klochkov determined the basic concept of the article and the methodological foundations of the study, as well as identified unpublished sources from the regional archives of Great Britain. V.S. Nazarova prepared the introduction of the article, created its structural composition, and analyzed the historiography of the problem. I.M. Uznarodov conducted an analysis of the publications of periodicals and formulated the main results of the study.
Features of Medical Support for River Transport of the Lower Volga Before and During the Battle of Stalingrad
Authors: Bukatina Margarita ,   Volgograd State University
Published: July 2024

Introduction. The effectiveness of the health protection of employees and passengers of the “Volgotanker,” “Reidtanker,” and Lower Volga Shipping Company directly affected the quality and volume of transportation during the most difficult period of the Great Patriotic War for the Lower Volga region. Methods and materials. The article analyzes the medical service activities of the Nizhnevolzhsky Vodzdravotdel (the Lower Volga Health Department) for these shipping companies on the basis of unpublished materials from the State Archive of the Astrakhan region, memoirs, newspapers, and literature. General scientific methods, as well as systematic methods, historical-genetic, comparative historical, and narrative methods, were used to reveal the topic. Analysis and results. The analysis of the work was carried out in three areas: the organization of healthcare, the fight against infectious diseases, and material and personnel issues. Conclusions were drawn about the wide branching structure of the medical organizations of the Nizhnevolzhsky Vodzdravotdel, from dairy kitchens to autonomous hospitals located throughout the basin, from Kamyshin to the Caspian Sea raid. The influence of the Battle of Stalingrad on the restructuring of this system was shown. An analysis of the work of the organization to combat infectious diseases and data on the scale of vaccination of workers and passengers were given. The tendency of falling morbidity on river transport in 1942 is indicated, and its causes are analyzed. The lack of medical personnel and the predominance of female labor in the Nizhnevolzhsky Vodzdravotdel are postulated. Conclusions are drawn about the value of the organization’s contribution to the work of water communication, despite the difficulties.
Lessons from the Co-movement of Inflation around the World
Authors: Cascaldi-Garcia Danilo , Guerrieri Luca , Iacoviello Matteo , Modugno Michele
Published: July 2024

The aftermath of the COVID-19 pandemic saw a surge in inflation around the world, reflecting rapid increases in the demand for goods, strained supply chains, tight labor markets, and sharp hikes in commodity prices exacerbated by the Russian war on Ukraine. As illustrated in figure 1, this inflation surge was synchronized across advanced and emerging economies, not only for total inflation but also for its core component.
Análisis de las decisiones de los profesores de matemáticas en tiempos de pandemia
Authors: Rocha-Salamanca Pedro Gerardo
Published: July 2024

El presente artículo expone un análisis de los principales problemas que enfrentaron los profesores de matemáticas y las soluciones que dieron a los mismos cuando se presentaron situaciones resultantes del cambio a la modalidad remota durante la pandemia por COVID 19, dada desde el año 2019 hasta el año 2021, la información recopilada se realiza a partir de relatos en los cuales se identifican tres momentos denominados, inicio, nudo y final. En el momento de Inicio de los relatos, se identifican cinco grupos de obstáculos en la enseñanza remota, incluyendo problemas y brechas tecnológicas, falta de interacción, interferencias familiares y evaluación. En el momento de Nudo se observa una transformación de las categorías a otras denominadas agentes externos, evaluación, intervención familiar y explicación insuficiente. Los relatos muestran las consecuencias del uso de la tecnología, la importancia de la integridad y el acompañamiento familiar, así como la adaptación del docente a las necesidades de los estudiantes. Las cinco soluciones observadas a la problemática en el momento Final están relacionadas con la familia, recursos tecnológicos, responsabilidad, evaluación y resultados de aprendizaje. El artículo es una parte del proyecto de investigación titulado “Las decisiones frente a situaciones de incertidumbre de los profesores de matemáticas en tiempo de pandemia” desarrollado por los profesores Diana Gil, Pedro Rocha Salamanca y Fernando Guerrero Recalde de la Universidad Distrital.
Las TIC como herramientas pedagógicas para la educación sexual infantil en escenarios no convencionales
Authors: Gómez-Duarte Shirley Vanessa , Contreras-Sierra Angélica Lucía
Published: July 2024

La presente investigación tuvo como objetivo analizar cómo las TIC pueden influir en los procesos de enseñanza-aprendizaje de la educación sexual infantil, enfocándose en los conceptos de valores, cultura de derechos y sexualidad en espacios educativos no convencionales en Soacha, Cundinamarca. A través del Aula Móvil, un espacio itinerante de prácticas pedagógicas, se crearon entornos educativos y formativos que involucraron dispositivos multimedia para posibilitar una educación integral.
El estudio se basó en fundamentos legales y teóricos proporcionados por organizaciones como Unicef, Unesco, MEN e ICBF. Utilizando un enfoque cualitativo con un paradigma sociocrítico y un diseño de investigación-acción, se recogieron datos mediante observación participante, diarios de campo y cuestionarios. El análisis descriptivo reveló que el uso de TIC en estos entornos facilita la comprensión y aceptación de la educación sexual infantil, promoviendo valores, derechos y una mejor comprensión de la sexualidad.
Отложенное старение и поздняя взрослость: анализ динамики научных публикаций методом тематического картирования
Authors: Григорьева Ирина Андреевна , Видясова Людмила Александровна
Published: July 2024

Статья посвящена наукометрическому анализу публикаций, охватывающих проблематику активного старения/долголетия, отложенного старения и здоровья пожилых людей. Целью работы является поиск новых исследовательских методов для изучения многофакторного и нелинейного характера старения, а также выявление связи тематической наполненности научных публикаций с ключевыми направлениями, заявленными в официальной повестке Мадридского международного плана по активному старению и Индексе активного старения. Утверждение концепции активного старения через мадридский план и последующие национальные планы активного старения / долголетия в ряде стран выступило важным нормативным ориентиром для жизни в позднем возрасте. Это не только способствовало политике длительной занятости пожилых, но и оказало важное влияние на изменение общественного восприятия старения, жизненной стратегии и самоидентификации пожилых. В России «Стратегия действий в интересах граждан старшего поколения в Российской Федерации до 2025 года», принятая в 2016 г. с «осторожными» формулировками, и Индекс активного долголетия (ИАД) стали важными шагами на пути адаптации к глобальным трендам в области старения. В статье анализируется предметное поле научных публикаций по теме активного и отложенного старения, а также поздней взрослости в контексте взаимосвязи с критериями ИАД. Результаты тематического картирования научных публикаций освещают как отечественный, так и зарубежный опыт исследований в этой области. Исследование выявило преобладание тем, связанных с разработкой критериев для оценки активного старения и долголетия, человеческого капитала, а также вопросов здоровья и использования сервисов здравоохранения. Также отмечается тенденция к медикализации исследований проблем старения и акцент на аналитических методах обработки больших данных.
Difficult Small Bowel Bleeding in Surgical View
Authors: Bae Jung Min
Published: July 2024

Small bowel bleeding (SBB) accounts for 5%-10% of all gastrointestinal bleeding (GIB) cases. Several diagnostic modalities in SBB are performed. However, the small bowel is beyond the reach of these diagnostic modalities. A large amount of bleeding in GIB is a key factor leading to a poor prognosis. Appropriate and prompt diagnostic and treatment strategies are needed. Several diagnostic and management algorithms have been proposed. However, the processing of algorithm is complex and frequent mistakes are happened. Because of surgical aspects and sudden or gradual development of hemodynamic instability in SBB, algorithms considering surgical role and treatment have been published. The intra-operative enteroscopy (IOE) is a gold-standard method for detecting lesions in SBB. The primary goal of IOE is to detect specific bleeding focus in SBB. The determining the resection range is the secondary goal. In most cases in SBB, segmental resection is treatment of choice. However, in bleeding distal duodenum from distal to the ampulla of Vater to Treitz ligament, pancreas preserving distal duodenectomy could be performed. In terminal ileum bleeding, after resection of pathologic bowel, the reconstruction option is ileo-colic anastomosis or end enterostomy. Because of frequently developed postoperative morbidity and mortality, post-operative critical care is perfectly fit for an acute care surgeon’s role. Therefore, in the entire management process, an interprofessional team or multidisciplinary approach is critical for improving the quality of care of SBB and decreasing mistakes.
A Case of Acute Appendicitis Complicated by Necrotizing Fasciitis Requiring Abdominal Wall Reconstruction
Authors: Lim Qi Xuan , Guo Yuxin , Guang Ho Christopher Wei , Zheng Xiaojin
Published: July 2024

Acute appendicitis represents one of the most common causes of acute abdomen that may warrant emergency surgery. Necrotizing fasciitis complicated by acute appendicitis is considered a rare complication with life-threatening implications. A 65-year-old man presented with abdominal pain, where a scan, revealed a perforated appendicitis complicated by an anterior abdominal wall collection. He underwent percutaneous drainage, but subsequently developed extensive necrotizing fasciitis requiring extensive debridement and reconstruction. The rapid progression of necrotizing fasciitis calls for early recognition and prompt intervention. The key management principles employed were broad spectrum antibiotics and aggressive surgical debridement. This case demonstrated the use of vacuum-assisted closure dressing and multidisciplinary care in wound healing and coverage. To ensure early diagnosis and intervention for acute appendicitis complicated by necrotizing fasciitis, a high degree of clinical suspicion and awareness of this complication is required.
HEP-TILE: HBV whole genome sequencing (nanopore protocol) v1
Authors: Lumley Sheila , Kent Chris , Quick Josh , Matthews Philippa
Published: July 2024

This protocol describes the HEP-TILE tiled amplicon protocol for whole genome sequencing of Hepatitis B virus (HBV) on the nanopore MinION. We developed a pan-genotypic (genotypes A-J) HBV scheme using an early version of PrimalScheme3, a web-based primer design tool for developing multiplex primer schemes. PrimalScheme3 is a successor to PrimalScheme, with a number of changes made to enable us to generate an overlapping (tiled) amplicon scheme which covered the circular HBV genome, utilising a number of discrete primers at each position to handle intraspecies diversity. Primer sequences are here: https://github.com/quick-lab/primerschemes/blob/main/primerschemes/hbv/600/v2.1.0/primer.bed The amplicons can also be fragmented and sequenced on Illumina platforms.
Library Bottlenecking Protocols v1
Authors: Ross David
Published: July 2024

Protocol for bottlenecking a variant library for downstream use in the Pooled, Growth-Based Assay pipeline using either a positive-displacement flow cytometer or basic microbial culture equipment.
Transient epileptic amnesia versus transient global amnesia: aspects of differential diagnosis
Authors: Lipatova L. V. , Sakovsky I. V. , Gadaborshev M.-B. V.
Published: July 2024

Transient global amnesia (TGA) and transient epileptic amnesia (TEA) are rare phenomena in clinical practice that manifest as transient cognitive amnestic impairments. Despite the similarity in clinical picture, such conditions are pathogenetically heterogeneous and require different therapeutic approaches. TGA is a clinical syndrome characterized by sudden anterograde amnesia of the event lasting up to 24 hours, lacking focal neurological symptoms, and not prone to recurrence. Mimicking TGA, TEA often occurs manifested as epileptic seizures with impaired awareness of varying duration, including long-term (more than 24 hours), as a variant of focal epilepsy. TEA is characterized by recurrent episodes, combination with other manifestations of epilepsy, and comorbidity with neurodegenerative diseases (dementia). For differential diagnosis, it is necessary to use prolonged video-electroencephalographic monitoring with sleep recording, neuroimaging methods (brain magnetic resonance imaging, positron emission tomography), psychological testing, biochemical examination for markers of neurodegeneration.
Smartphone Addiction and Its Correlations with Academic Motivation, Procrastination and Self-Control in Communication among Belarusians and Russians
Authors: Sheinov V.P. , Nizovskikh N.A. , Ermak V.O.
Published: July 2024

Objective. Identification and comparative analysis of connections between smartphone addiction and academic motivation, procrastination and self-control in communication among Belarusians and Russians. Background. Smartphone users who become dependent on it suffer from many manifestations of psychological ill-being, so smartphone addiction has become the object of close attention of psychologists in different countries. At the same time, the relevant question is: are its connections with the personal characteristics of users among representatives of different ethnic groups similar or different?
Study design. Based on online testing, connections between smartphone addiction among Russian and Belarusian men and women were identified and analyzed.
Participants. 3379 respondents: 2365 Belarusians (55,39% women) and 1014 Russians (65,87% women).
Methods. The study used questionnaires: smartphone addiction (author V.P. Sheinov), social network addiction (authors V.P. Sheinov, A.S. Devitsyn), factor models of these addictions (authors V.P. Sheinov, A.S. Devitsyn); questionnaire “Academic Motivation Scale” (authors T.O. Gordeeva and others); “Procrastination Scale” by K. Lei, adapted by Ya.I. Varvaricheva; M. Snyder’s test “Self-control in communication”.
Results. Smartphone addiction of Belarusian and Russian men and women and all its factors correlate negatively with internal academic motivation and positively with external academic motivation, procrastination, self-control in communication and addiction to social networks. These correlations between Belarusians and Russians differ only in the closeness of connections; they indicate that smartphone addiction is negatively related to internal motivation for learning, openness and directness of contacts.
Main conclusions. Among Belarusians and Russians: 1) were found similarities of the correlation between smartphone addiction and academic motivation, procrastination, self-control in communication and addiction to social networks; 2) a negative relationship between smartphone addiction and internal motivation to study and quality of communication was revealed.
Analysis of existing means of the cutting tool path visualization in the CNC systems
Authors: Gusev Sergey S. , Makarov Vadim V.
Published: July 2024

BACKGROUND: Currently, machines for processing metals and other materials are used in various industry sectors. Operation of these machines defined with the CNC is impossible without using the corresponding systems, which ensure performing real-time configuring of the system for solving various technological tasks by means of machine drives control.
AIM: Analysis of functional capabilities of the visualization module of the AksiOMA Kontrol CNC system in comparison with other well-known same-type systems with consequent enlarging of capabilities of this module. Based on this, the study aim is formulated as follows: broadening the functional capabilities of the module of cutting tool motion path visualization in the AksiOMA Kontrol CNC system by means of development of the path analysis module.
METHODS: For achieving the aim, the next task to broaden the functional capabilities of the module of cutting tool path visualization in the AksiOMA Kontrol CNC system is formulated as follows: analysis of existing means of cutting tool path visualization in the CNC systems.
RESULTS: The study result is the fact that the visualization interface is critically important for operation, as it helps the operator to assess the abnormal situation quickly. Mistakes can be found at every stage of part machining setting-up. The mistakes can be made when positioning the part or the tool, at zero-point binding, at axes offset setting-up, etc. When machine equipment is set up, generally, difficulties take place if there is a different set-up for the other order. For these cases, in the CNC systems, such functional capabilities as processing visualization are necessary. This functionality is critically important, as it helps to find a mistake in time, to assess the danger level, and to fix it in time, that helps to prevent both the machine and the tool from failure and excessive mechanical impact.
CONCLUSION: The study, which contains solving the tasks of analysis of cutting tool motion path in the AksiOMA Kontrol CNC system, is completed. The analysis conducted in the paper revealed that majority of CNC systems does not have the presented functional capabilities that does not help to conduct the complete analysis of the machining process.
Multi Ejector and pivoting-supported R744 application with AC for supermarkets
Authors: Contiero Luca , Pardiñas Ángel , Hafner Armin
Published: July 2024

CO2 refrigeration units are gaining market shares thanks to the ability to provide an energy efficient performance for industrial and commercial refrigeration applications in any climate. As with all the applications, the investment and operation costs should be kept as low as possible, to reduce the payback time and promote the introduction of innovative system solutions.
In this work the flexibility achieved by implementing the pivoting technology in a supermarket refrigeration application is investigated both at design- and partial load conditions. The air conditioning (AC) load is also considered within a wide range of ambient temperatures. The Multi Ejector block utilized will be analyzed in terms of performance and its effect on the compressor combinations at different operating conditions. The objective is to increase the flexibility of the centralized rack through a proper design and sizing of the compressor pack equipped with the pivoting technology, while maintaining the efficiency and reducing the
investment costs. This work shows that a Multi Ejector pivoting-supported system will be beneficial from the flexibility and capital costs point of view, and the benefit will be more consistent if the AC load is part of the integrated system architecture. Furthermore, a thorough investigation has been conducted whenever the ejector capacity is too high compared to the load, proposing two alternative solutions.
The Problem of Demarcation of Borders between the Mutawakkili Kingdom of Yemen and the Saudi State in 1933–1934
Authors: Bantserova Olga
Published: July 2024

The paper examines the process of demarcation of the border between the Mutawakkili kingdom of Yemen and the Saudi state in 1933–1934. It should be noted that during this period there were several political, economic, and social reasons that led to the territorial claims of the two countries to each other due to the lack of a previously mutually demarcated border. Examples are given of the mutual influence of the parties on the course of both military operations preceding the official state demarcation, and negotiations during the demarcation itself. The author analyzed British intelligence documents about the progress of the hostilities and subsequent negotiations in an attempt to resolve territorial disputes. A conclusion is drawn about the dependence of the security and “political tranquility” of the Saudi Kingdom on its southern neighbor. An opinion was expressed regarding the reason for the complexity of the negotiations on demarcation, as well as regarding the Taif Agreement signed because of them.
INVESTIGATION OF SCHEMES FOR HYDRODYNAMIC CLEANING OF UNITS OF HYDRO-FUEL SYSTEMS
Authors: Reshetov V. M.
Published: July 2024

The paper considers the structure of stands for hydrodynamic cleaning of units in order to ensure optimal cleaning parameters and protection of the pumping station, the features of parallel and series connection of a source of fluid oscillations when creating a pulsating pressure and flow in the cavity of the cleaned hydraulic unit. When calculating the modes of hydrodynamic cleaning of the cavities of the unit in resonant modes, electrodynamic analogies are used. The conducted experimental studies have confirmed the high efficiency of the purification process.
THE IMPROVEMENT OF GTE-WHEEL OSCILLATION RECORDING PROCESS BY THE PANORAMIC-TYPE, NOISE-PROOF, DIGITAL SPECKLE-INTERFEROMETER
Authors: Ivchenko A. V. , Safin А. I.
Published: July 2024

The paper describes a mobile laser system based on a noise-proof digital speckle pattern interferometer for studying the coupled vibrations of the bladed wheels during engine development stage. The mechanical properties influence of the optical scheme elements of the speckle interferometer when recording information without vibration isolation is studied. It is noted an improvement in the quality of the obtained speckle interferograms with an increase in the construction rigidity of the diffusely scattering element of the speckle pattern interferometer.
DESIGN OF A LOW-NOISE THROTTLE SECTION FOR SHUT-OFF CONTROL VALVES
Authors: Kryuchkov A. N. , Ermilov M. A. , Balyaba M. V. , Ermilova Е. N. , Vidyaskina A. N.
Published: July 2024

The article describes the main source of hydrodynamic noise (HDN) in shut-off and control valves and the mechanism of the occurrence of acoustic energy. The main geometric parameters of the throttle section with a cylindrical shape are considered: the shape of the channels of the throttle section, the diameter of the orifices of the channels and the distance between the channels. The stages of choosing these geometric parameters are described. Changes in these parameters significantly affects the HDN in control valves. The article presents the experimentally obtained dependences of the change in the HDN level on the relative change in the diameter of the channels of the throttle section and on the change in the relative distance between the channels in 1/3 octave frequency bands.
SPECKLE INTERFEROMETRY APPLICATION FOR INVESTIGATING THE EFFECT OF PARAMETER MISTUNING OF TURBOMACHINE ROTOR WHEELS ON THEIR NATURAL VIBRATIONS
Authors: Zhuzhukin A. I. , Nepein K. G.
Published: July 2024

Compressor rotor wheel vibrations have been investigated using the digital speckle interferometry method. The diametrical mode case study experimentally revealed harmonic distortion of the distribution of the displacement along the circumference. Vibration mode distortion was also registered at one of wheel oscillation modes belonging to the family with the same circumference. It has been experimentally shown that parameter mistuning may not only result in changing the wheel disk vibration modes, but also in that of individual blade vibration modes, which makes the interpretation of rig test results more complicated. The localized modes were revealed at high frequencies of the wheel vibrations, when vibration amplitudes of one or several blades significantly exceed those of the rest.
MODERN PROBLEMS OF AEROACOUSTICS OF PROPELLER-DRIVEN FIXED-WING AIRCRAFTS
Authors: Pogosyan M. A. , Moshkov P. A.
Published: July 2024

The modern classification of noise sources of propeller-driven fixed-wing aircraft is considered. Competitive community noise levels for single- and twin-engine for the projected light propeller-driven aircraft are formulated. An approach to community noise regulation of propeller-driven fixed-wing unmanned aerial vehicles is proposed. Modern approaches to assessing the community noise of propeller-driven fixed-wing aircraft are considered.
FEATURES OF OIL CONSUMPTION MEASUREMENT DURING BENCH TESTS OF INDUSTRIAL GAS TURBINE
Authors: Grishanov Oleg A.
Published: July 2024

Oil consumption is one of the main operating parameters of a gas turbine engine. The article deals with the problems associated with determining oil consumption during bench tests of gas turbine drives. The required measurement error of no more than 0.1 kg/h is difficult to achieve with a bench oil system volume of about 200 liters and high thermal inertia. Therefore, the article proposes, in order to save fuel, to exclude special tests to determine oil consumption from the bench acceptance test program and transfer them to the acceptance tests of the engine as part of the gas pumping unit.
DETERMINATION OF THE CAPACITY OF THE EXHAUST NOISE MUFFLER OF PNEUMATIC SYSTEMS BY COMPUTATIONAL AND EXPERIMENTAL METHODS
Authors: Igolkin Aleksandr A. , Safin Artur I. , Stadnik Dmitriy M. , Balyaba Maxim V.
Published: July 2024

One of the main problems of pneumatic systems is the noise that occurs when compressed air is discharged, which negatively affects personnel. To create an effective noise muffler, it is necessary to predict its throughput. The article presents the results of experimental studies of the bandwidth of a noise muffler using porous polypropylene. A simulation model of a noise muffler as part of a pneumatic system has been created and calculations of pressure changes at control points have been carried out. Noise measurements were carried out and the acoustic efficiency of the developed muffler was determined, which amounted to 34.3 dBС and 32.4 dBА.
ON AUTOMATION OF DESIGN OF OIL SYSTEM OF AN AIRCRAFT GTE
Authors: Grishanov Oleg A.
Published: July 2024

The design of subsystems and main elements of the oil system of an aircraft gas turbine engine comes down to working on the proposed algorithms. Traditionally, the oil system is divided into hydraulic, thermal and mechanical modules. The methods for designing the elements of each module are known and verified by development experience. But coupled with an assessment of the engine life cycle cost, on the basis of which the algorithms presented in the article were created, a convenient engineering design tool is formed.
GAS DYNAMIC FACE SAEL TIGTNESS UNDER NON-STATIONARY LOADING
Authors: Vinogradov Aleksandr S. , Sharonov Aleksandr I. , Zagadov Il'ya A. , Komisar Yuliya V.
Published: July 2024

This paper presents a new method for calculating leaks of an end gas dynamic seal with spiral grooves in various modes of operation of an aircraft engine. This type of seal has never been used in the design of aircraft engines, however, it has good characteristics in comparison with traditional types of seals. In the developed methodology, the effect of changing the engine operating mode on temperature loads and deformations is investigated. The simulation results are compared with experimental data.
ABOUT THE APPLICATION OF MR MATERIAL FOR NOISE REDUCTION OF MECHANICAL ENGINEERING PRODUCTS
Authors: Igolkin Aleksandr A. , Safin Artur I.
Published: July 2024

The noise of mechanical engineering products is strictly regulated by national standards. Noise requirements tend to become more stringent. The article describes the experience of using MR material to reduce the noise level of various products.
Recurrent identities for two special functions of hypergeometric type
Authors: Podkletnova S. V.
Published: July 2024

The article presents conclusions and proofs of Gauss-type identities for two known hypergeometric type functions. For the derivation and justification of formulas, the representation of functions in the form of a series is used, as well as an integral representation of the functions under consideration. The article uses the definition and properties of gamma and beta functions, the hypergeometric Gauss function, as well as known identities for these functions. Hypergeometric functions are widely used in solving various types of differential equations. The presence of identities connecting the functions involved in the resulting formulas of solutions greatly simplifies both the final formulas and intermediate calculations in many problems related to solving hyperbolic, elliptic and mixed types of equations
Subharmonic envelopes for functions on domains
Authors: Khabibullin B. N.
Published: July 2024

One of the most common problems in various fields of real and complex analysis is the questions of the existence and construction for a given function of an envelope from below or from above of a function from a special class H. We consider a case when H is the convex cone of all subharmonic functions on the domain D of a finite-dimensional Euclidean space over the field of real numbers. For a pair of subharmonic functions u and M from this convex cone H, dual necessary and sufficient conditions are established under which there is a subharmonic function h ̸≡ −∞, “dampening the growth” of the function u in the sense that the values of the sum of u + h at each point of D is not greater than the value of the function M at the same point. These results are supposed to be applied in the future to questions of non-triviality of weight classes of holomorphic functions, to the description of zero sets and uniqueness sets for such classes, to approximation problems of the function theory, etc.
Modeling of nanoheterojunction betavoltaic cell on GaN and GaP with Si and 3C-SiC/Si
Authors: Dolgopolov M. V. , Chipura A. S.
Published: July 2024

In this paper, the electrophysical properties and efficiency of energy converters — betavoltaic elements, which contain a GaN and GaP heterojunction on Si and 3C-SiC/Si substrates, are modeled. For conversion into electrical energy, external 63Ni or internal 14C radioactive sources with a test specific activity of 100 mCi・cm-2 are investigated in the simulation. The system of parameters and characteristics is optimized: diffusion lengths, short-circuit current, open circuit voltage, filling factor, reverse saturation current and efficiency. It was shown in simulation results, that in the device structure with junction depth of 0.1 microns, the good operation of a betavoltaic element is determined, the short-circuit current density is up to 200 nA・cm-2, the open circuit voltage is up to 3.7 V, the power density is up to 700 nW・cm-2, efficiency up to 25 %. The conversion efficiency reaches its maximum value when using a radioisotope source with an activity density from 25 to 100 mCi・cm-2. The conversion efficiency with the location of the injector source inside is estimated to be about 30 times higher than with the external location.
A DSGE Model of the Russian Residential Real Estate Market
Authors: Lomonosov D. A.
Published: July 2024

The paper develops a dynamic stochastic general equilibrium (DSGE) model of the Russian economy based on an endogenous housing sector and three categories of homeowners – patient, impatient and non-Ricardian. The DSGE model is applied from the first quarter of 2010 to the fourth quarter of 2019 using a Bayesian method for minimizing the discrepancy between theoretical and empirical impulse responses to a shock due to modified terms of trade. The model is then employed to provide a quantitative assessment of how macro variables respond to shocks generated by the housing market, interest rates, mortgage subsidies, financial liberalization, and altered terms of trade. At the same time, the impact of shocks on a number of economic indicators is largely determined by the functional form of household utility, as demonstrated by the robustness test. The results obtained based on the model also do not demonstrate a strong inertial effect in the economy due to the revival of the residential real estate construction sector, and they contradict a number of studies and expert estimates based primarily on the input-output model. One reason for this discrepancy may be the analysis, which is based on a horizontal supply curve, resulting in an overestimation of the impact of the construction sector on the economy. This DSGE model can serve as a starting point for scenario-based projections of the dynamics of the residential real estate market and the associated mortgage market, for testing the impact of various policy measures on the housing sector, and for assessing their effects on various categories of households.
Short-Term Weight Loss Outcomes of 104 Mini-Gastric Bypass or One-Anastomosis Gastric Bypass Operations
Authors: Ismael Nabaz H , Shabila Nazar P
Published: July 2024

Objectives: This study aimed to examine the short-term effects of mini-gastric bypass (MGB) or one-anastomosis gastric bypass (OAGB) procedures on weight loss in individuals with obesity. Methods: This retrospective study was conducted in Medicano Hospital, Erbil, Iraq, from January 2019 to May 2020. Preoperative body mass index (BMI), age, height and preoperative weight were recorded as baseline measures. Weight-related changes were evaluated during a follow-up phase of 48 weeks. Results: A total of 104 patients with obesity underwent MGB or OAGB surgery. The mean baseline parameters of the subjects before surgery included 1.64 m for height, 122.9 kg for weight and 45.6 kg/m2 for BMI. During the 48-week follow-up period, there was a substantial reduction in mean weight, which dropped from 122.9 kg at baseline to 75.5 kg at week 48. The weight change (in percentage) gradually increased from −11.8% at week 12 to −37.9% at week 48, without statistically significant association with demographic factors or chronic diseases. From week 12 to week 48, the percentage of excess weight loss (%EWL) increased substantially from 26.8% to 86.1%. The results of the subgroup analysis indicated that the %EWL was considerably higher among those aged 30 or older at week 36 and singles at week 48. Conclusion: This study’s results illustrate the efficacy of MGB or OAGB procedures in significantly reducing weight in the short term. The %EWL increased with the follow-up time and was significantly associated with age and marital status.
Lithium-ionic conduction of solid solutions Li8Zr1 – xCexO6
Authors: Pantyukhina M. I. ,   Institute of high-temperature Electrochemistry UB of RAS, Plaksin S. V. , Batalov N. N. ,   Institute of high-temperature Electrochemistry UB of RAS,   Institute of high-temperature Electrochemistry UB of RAS
Published: July 2024

In order to attain a higher conductivity of phase Li8ZrO6, which has the relatively higher conductivity and chemical stability to lithium the effect of substitution of Zr-sublattice was investigated. The homogeneous region of the solid solutions Li8Zr1 – xCexO6 was 0 ? x < 0.07. Transport properties of lithium ion conductors of the system Li8Zr1–xCexO6 were investigated (the electronic part of the total conductivity, concentration dependence of the total conductivity and the activation energy). It is establish that phase Li8ZrO6 and the solid solutions Li8Zr1–xCeXO6 mainly have a lithium-ionic conductivity.
Introduction effect of zirconium ions into the structure of a lithium germanate-vanadate solid electrolyte on its electrical properties
Authors: Burmakin E. I. ,   Institute of high-temperature Electrochemistry UB of RAS, Shekhtman G. S. , Antonov B. D. ,   Institute of high-temperature Electrochemistry UB of RAS,   Institute of high-temperature Electrochemistry UB of RAS
Published: July 2024

The influence of partial substitution of Zr4+ ions for Ge4+ ions at high conduction solid electrolyte Li3.75Ge0.75V0.25O4 was investigated. It was established that introduction of zirconium ions leads to noticable increasing of electrolyte conductivity and decreasing of activation energy. It is proposal that this effect connects with size factor influence: the introduction of larger (than Ge4 +) Zr4+ ions leads to expansion of average size of lithium cations migration channels in the electrolyte structure.
Stability of lithium-conducting solid electrolytes to metal lithium (a thermodynamic simulation)
Authors: Andreev O. L. ,   Institute of high-temperature Electrochemistry UB of RAS, Batalov N. N. ,   Institute of high-temperature Electrochemistry UB of RAS
Published: July 2024

The method of thermodynamic simulation was used to establish equilibrium products of chemical interactions in the systems lithium metal – solid electrolyte (SE). Calculations were performed at 25–165o C for Li6BeO4, LiYO2, LiScO2, Li5SiN3, Li8SiN4, Li3AlN2, Li2SO4, Li2ZrO3, Li4ZrO4, Li8ZrO6 and Li5AlO4 solid electrolytes. The prediction of solid electrolyte stability in respect to Li metal was given well. As a result, lithium-conducting solid electrolytes under investigation were sorted into three groups as follows: 1) thermodynamically stable in respect to Li metal solid electrolytes; 2) solid electrolytes forming passive layer in contact with Li metal; and 3) unstable in respect to Li metal solid electrolytes.
The Russian Identity and Norms-Values in the Constitution of the Russian Federation
Authors: Ignatushko Irina V. ,   Associate Professor of the Department of State and Legal Disciplines of the Law Faculty of the University Associated with the Inter-Parliamentary
Published: July 2024

The Constitution of the Russian Federation is the main law of the country, which establishes the foundations of Russian society and the state. The norms of the Constitution are usually classified on various grounds. The political and legal nature of the Constitution makes it possible to distinguish, according to the criterion of functional orientation, in addition to regulatory and protective norms, also norms-values that fund society and allow us to talk about Russian identity. Much attention was paid to these norms when amending the Constitution of the Russian Federation in 2020.
Implementation of the Constitutional Principle of Independence of the Judiciary in Determination of Judicial Administration Purposes
Authors: Kravtsova Larisa E. ,   Federal Judge Emeritus, Degree-Seeking Student of the Department of Constitutional and Municipal Law of the Law Faculty of the Lomonosov Moscow State University
Published: July 2024

This article is about how the goals of court management are determined inside and outside the judicial system. The idea of the article is that the goals of judicial management affect the implementation of the constitutional principle of judicial independence. It is shown that the goals of judicial management have a connection with the subjects who establish them. It is noted that the goals are related to the reality of achievement and how the actual goals correspond to the stated goals. The article substantiates that the criteria for evaluating the result of judicial management are important when the goals of the development of the judicial system are set.
Technical and Legal Challenges in Seizure of Digital Assets: Between Innovations and Regulation
Authors: Melnik Viktor S. ,   Postgraduate Student of the Saint Petersburg Academy of the Investigative Committee of the Russian Federation
Published: July 2024

This article examines the key technological and legal challenges faced by law enforcement agencies in attempting to seize and manage digital assets. Special attention is given to the complexities of identifying digital asset owners, the necessity for specialized blockchain analysis software, the challenges of accessing personal keys post-identification, and the ambiguous status of cryptocurrencies.
The Development of the Procedural Status of a Suspect and the Introduction of the Institution of Investigative Judges: Interrelated Prospects of Improvement of Russian Criminal Proceedings
Authors: Polikarpova Olga S. ,   Senior Lecturer of the Department of Administrative Activities of Internal Affairs Agencies of the Saint Petersburg University
Published: July 2024

The relevance of the article is based on the pressing need for improvement of the Russian criminal procedure model for the purposes of simplification of the procedural order of criminal prosecution of an individual for a committed crime. The author suggests an opportunity to achieve the set goal by elimination of the institution of charging and shifting its main purpose aimed at assurance of the guarantee of admissibility of long-term personified criminal prosecution, including with the application of criminal procedure measures of prevention subject to the availability of sufficient grounds, to departmental control, prosecutor’s supervision by strengthening thereof and in most cases to an investigative judge that is suggested to be introduced in the Russian model of criminal proceedings as an independent institution.
On Tendencies of the Contemporary Criminal Policy in the Corruption Combating Sphere
Authors: Kraynova Nadezhda A. ,   Head of the Department of Criminal Law and Procedure of the Sevastopol State University, PhD (Law), Associate Professor
Published: July 2024

The article analyzes the main trends of criminal policy in the field of combating crime at the present stage. A general conclusion is made about the need to conceptualize Russian criminal policy based on the implementation of a crime prevention strategy (concept), the formation of a unified law to combat crime.