bluuebunny/crossref_metadata_2025 huggingface dataset:
Determining the eastern European non-governmental organisations sustainability under crisis conditions, as well as during social and technological transformations
Authors: Tokar Marian , Kumar Hanna , Kostyrya Inna , Kliuchnik Alona
Published: December 2023

The object of this study is the stability of non-governmental organizations (NGOs) of Eastern Europe during crisis phenomena with signs of social and technological transformations. The subject of research is the processes of transformations in the external and internal environment of the activities of non-governmental organizations, which have an impact on sustainability. The sustainability of non-governmental organizations is examined through the Civil Society Organization Sustainability Index (CSOSI). CSOSI allows measuring the impact of global crisis phenomena on the sustainability of an NGO based on the analysis of a number of components. The research was aimed at solving the task to find influencing factors on the activities of non-governmental organizations during the manifestation of crises of various directions. During the study, influencing factors were identified: organizational capacity, society's perception of the organization, and sectoral infrastructure. It is noted that the realm of technological development belongs to the sectoral infrastructure. On the one hand, the imperfection of technology can cause a crisis. On the other hand, technological innovations allow non-governmental organizations to overcome crises. It has been proven that NGO access to new technologies serves as a basis for ensuring the sustainability of the organization. A regression analysis of the influence of factors on the CSOSI index was carried out. An economic-mathematical model was built on this basis. The model proved the significance of the studied indicators, as their p-value remains below 0.05 (p≤0.05). As a result, this has made it possible to propose an improved model for the development of social innovations under conditions of crisis and uncertainty. The reported results could be used by the founders of NGOs, analytical and consulting companies to construct forecasts of the development of society
Recognizing fake news based on natural language processing using the BM25 algorithm with fine-tuned parameters
Authors: Mishchenko Liudmyla , Klymenko Iryna
Published: December 2023

The object of the research is the method of natural language processing (NLP) with balanced parameters of the BestMatch25 (ВМ25) algorithm to recognize and classify fake news based on natural language processing (NLP). The unsatisfactory accuracy and speed of existing methods for detecting fake news in unstructured input data demanded the development of a new approach for their effective detection.
The study investigated the BM25 algorithm, methods for selecting parameters k1 and b, and their impact on the algorithm's effectiveness in detecting fake news. It was established that precise and detailed adjustment of these parameters is crucial in achieving optimal accuracy and data processing speed.
The results showed that the successful selection of BM25 parameters improves the model's accuracy by up to 14 % compared to standard term frequency – inverse document frequency (TF-IDF) calculations. These results were made possible by experimentally tuning different combinations of k1 and b parameters, in which the algorithm shows the best speed indicator or the most accurate estimate of the importance of a term in a document. Balanced values of k1 and b parameters were identified, leading to the algorithm's optimal speed and accuracy in assessing word importance considering the input data's peculiarities.
The balanced setting of the BM25 algorithm parameters explains the obtained results. They can be used for automated recognition and analysis of news and information on social media based on natural language processing. However, in practice, the effectiveness of the set of parameters depends on linguistic variations, content, and the theme within new input data sets
The development of method for increasing the decision making efficiency in organizational and technical systems
Authors: Lytvynenko Oleksandr , Bieliakov Robert , Vakulenko Yuliia , Hrinkov Volodymyr , Pokhodenko Borys , Boiko Sergey , Kanishov Viacheslav , Drozdyk Yevhenii , Kovtun Yevhenii , Leinyk Dmitry
Published: December 2023

The object of research is decision making processes in decision making support systems. The subject of the research is a method of decision making in management tasks using the walrus flock algorithm (WA), an advanced genetic algorithm and evolving artificial neural networks.
A method of finding solutions using an improved walrus flock algorithm is proposed. The research is based on the walrus flock algorithm for finding a solution to the object’s condition. Evolving artificial neural networks are used to train walrus agents and an advanced genetic algorithm is used to select the best walrus agents. The method has the following sequence of actions:
– input of initial data;
– WA numbering in the flock;
– determination of the initial speed of WA;
– display of WA along the search plane;
– preliminary assessment of the WA search area;
– classification of food sources for WA;
– sorting of the best WA individuals;
– an update of WA positions;
– WA migration;
– checking the presence of a predator;
– checking the stop criterion;
– escape and struggle with predators;
– checking the stop criterion;
– training of WA knowledge bases;
– determination of the amount of necessary computing resources, intelligent decision making support system.
The originality of the proposed method lies in the placement of WA taking into account the uncertainty of the initial data, improved procedures of global and local edge taking into account the degree of noise of data on the state of organizational and technical systems. The use of the method makes it possible to increase the efficiency of data processing at the level 13–16 % due to the use of additional improved procedures. The proposed method should be used to solve problems of evaluating complex and dynamic processes
Stabilogram diffusion analysis and the vestibular system features
Authors:   M.V. Lomonosov Moscow State University, Liubkevich Anton , Kruchinin Pavel
Published: December 2023

The method of stabilogram diffusion analysis is discussed. It is known that the sta-bilogram diffusion functions for the frontal and sagittal directions are different and their logarithmic plot has a characteristic bend (critical point). It is assumed that this bend is associated with a change in the persistence behavior for different time intervals in the presence of feedback in the postural control system. The article considers possible de-pendence between the features of the stabilogram diffusion function in question and the existence of a dead zone in the signal of the vestibular apparatus. Models of posture sta-bilization for the frontal and sagittal directions are designed. These models use modified motion equations for an inverted pendulum stabilized by a PID controller based on posi-tional measurements. The control is supplemented with feedback from the model of the otolith organ, which has a dead zone. It is assumed that the signal of the vertical canal of the otoliths and semicircular canals are subthreshold and are not used by the motor con-trol system. The results of diffusion analysis for a set of representations of numerical model of a person's postural control are presented. The parameters of the control system are corrected through comparing the simulation results with subjects examination data. Numerical modeling has shown that the effect of the otolith organ when a healthy person is standing in the “feet shoulder width apart” position in the frontal plane is minimal or absent. Though in the sagittal plane there are values of the otolith signal gain at which the influence of these control components becomes noticeable. The presented modeling enables detection of the main directions for analyzing the relationship between the indi-cators of the stabilogram diffusion analysis and the features of the vestibular signals and other sensory modalities.
Determination of the bone tissue mechanical properties by a numerical-digital method using CT data
Authors:   Kazan (Volga region) Federal University, Gerasimov Oleg , Rakhmatulin Ramil , Baltina Tatjana , Sachenkov Oskar
Published: December 2023

Modeling of elements of inhomogeneous media is an actual direction in the study of composite materials and biomechanics objects. The need for research is determined by the insufficient development of methods for describing mechanical parameters, taking into account the anisotropy of materials. In this case, one of the directions is the use of digital prototyping and numerical modeling methods. In the field of biomechanics, the applicability of approaches to numerical modeling based on image data correlates with cases of clinical practice, which is due to the peculiarities of non-destructive testing methods and allows obtaining results that affect the quality of treatment. The paper considers a method for restoring effective mechanical properties of a material based on computational and field experiments. The simulation was based on the finite element method and assumed the use of data from a digital prototype obtained by computed tomography. The restoration of the calculated area was performed by filtering the initial grid relative to the proportion of the content of the material. The presented method makes it possible to restore the effective values of the elastic modulus and tangential modules based on the relationship established within the framework of the approach between the mechanical properties of the material and the loading parameters of the model sample. In the course of the work, the bone organs of pigs were modeled. Animal husbandry and experimental procedures were carried out in compliance with bioethical norms. Physical tests and numerical modeling were carried out under the conditions of bending action. Validation of the obtained distribution of values of the stress-strain state was performed according to the data of full-scale experiments. The presented solution showed a weak dependence of the results (less than 1 %) relative to the degree of discretization of the computational domain, which made it possible to perform calculations using fewer finite elements, avoiding the use of resource-intensive methods to restore the geometry of the sample. The results obtained in the framework of the work correspond to the literature data and determine the true values, the use of which in calculations makes it possible to assess the strength of the elements of an inhomogeneous structure under the action of external loads, taking into account the spatial distribution of the material.
Comparison of the Agitation-Reducing Effects of Esmolol and Lidocaine in Pediatric Strabismus Surgery: A Double-Blind, Randomized Clinical Study
Authors: Ji Jae Young , Kang Kyu Sik , Seo Yong Han , Jung Ho Soon , Chun Hea Rim , Choi Jeong Soo
Published: December 2023

Objective: Agitation is a common symptom in children undergoing surgery, especially when surgeries are performed under sevoflurane and when patients undergo strabismus surgery. Because agitation can increase the risk of falls and lacerations on surgical sites and can delay discharge from the recovery room, adopting measures to reduce the incidence of agitation is essential. This study aimed to compare the agitation-reducing effects of lidocaine and esmolol administered individually or as a combination.Methods: We included 80 patients scheduled to undergo strabismus surgery. Thiopental and sevoflurane were administered to induce general anesthesia. Group EL received lidocaine (2 mg/kg) right after the end of surgery and esmolol (0.5 mg/kg) immediately after recovery from anesthesia after turning the anesthetic gas off; group L received lidocaine at 2 mg/kg right after the end of surgery and did not receive esmolol, group E did not receive lidocaine at the end of the surgery but received esmolol at 0.5 mg/kg right after recovery from anesthesia, and group C received neither esmolol nor lidocaine. Agitation severity was assessed using the objective pain score, Pediatric Anesthesia Emergence Delirium Scale immediately after recovery from anesthesia and until discharge from the recovery room.Results: Groups L and EL showed significantly lower agitation than groups E and C right after recovery from anesthesia, right after arrival to the recovery room, and 10 minutes after arrival to the recovery room (P < 0.05). Groups L and EL showed no differences in the reduction of the severity of agitation (P > 0.05).Conclusion: Compared to the groups without lidocaine administration, groups L and EL, which received 2 mg/kg lidocaine, showed a higher level of reduction in agitation immediately after recovery from anesthesia and right after arrival to the recovery room (P < 0.05).
The Impact of COVID-19 on Dysphagia in a Steroid-Responsive Dermatomyositis Patient: A Case Report
Authors: Kim Hyun Jung
Published: December 2023

There have been no reported studies or case reports on the coexistence of coronavirus disease 2019 (COVID-19) in patients with dermatomyositis (DM) and its effect on swallowing. This is the first case report that addresses the impact of COVID-19 on dysphagia in a patient with DM. A 65-year-old male diagnosed with DM and undergoing steroid treatment contracted COVID-19. Subsequently, muscle power and creatine kinase levels improved, but dysphagia persisted, leading to nasogastric tube feeding. COVID-19 may hinder the recovery of dysphagia in steroid-responsive DM patients.
Relationship between Athletic Identity and Stress in Division II College Softball Players
Authors: Walasavage Sarah , Judge Lawrence , Fox Brian , Vasiloff Olivia , Huffman Olivia , Schlosser A. J. , Razon Selen
Published: December 2023

Athletic identity (AI) can be defined as how an individual perceives themselves as an athlete. Although there are many resources for athletes when it comes to physical health, resources for mental health and balancing their AI with everyday life is sorely lacking. As a result, an athlete’s level of stress both inside and outside of their athletic career may increase. Stress that is related to high levels of AI can bring forth negative consequences, such as decreased concentration, focus, and poor academic performance, especially in the case of the student-athlete. The purpose of this study was to investigate stress in relation to AI in a Division II female softball team. Softball players (n = 27) completed the Athletic Identity Measurement Scale (AIMS) and Perceived Stress Scale (PSS). The mean PSS score was 32.39 out of a 40-point scale. The AIMS mean only showed a moderate level of AI (45.61 of 70-point scale). Pearson correlational analysis demonstrated that only a minor association existed between AI and perceived stress, but this correlation was not statistically significant (r = .36, p = .093). Results and implications from this study are discussed as to optimize student-athletes’ mental well-being.
Presence, Masks, Traces, and Absences. The Women’s Strike in the Selected Titles of the Teachers’ Press in Poland
Authors:   University of Opole, Pogorzelska Marzanna
Published: December 2023

The article presents the results of the content analysis of the selected examples of teacher press. The research focuses on the phenomenon of the Women’s Strike, engaging young people at an unprecedented scale in recent Polish history and significantly influencing the youth’s worldview. The research methodology, derived from Protest Event Analysis, applied quantitative and qualitative content analysis and the methods used in ecolinguistics to analyse discursive absences, defined in the form of voids, traces, and masks. The research sample comprised four titles of teacher press with issues published during and after the Women’s Strike. The analysis showed the meaningful absence of the issue of the Women’s Strike, with only some cases of presence, traces and masks, all showing an underrepresentation of the topic in the research sample. Moreover, the press research revealed significant differences between Catholic press and ideologically neutral magazines in quantitative and qualitative dimensions.
Regional Education on the Cultural Borderland. Do Students Need Knowledge about Their Region Today?
Authors:   University of Bialystok, Szwarc Alina
Published: December 2023

The article addresses the implementation of regional education, a crucial component of socio-cultural identity. Its goal is to initiate a discussion on the essence of regional education in contemporary schools and present a pilot study on students’ knowledge about their region. The research shows that the role of schools in acquiring knowledge about the region is significantly smaller than that of the family environment, the Internet, or learning through social observation. The research indicates the need for broader studies on schools’ current curricula and educational offers in regional education. Its results also reveal the urgent need to restore the methodological foundations of regional education in Poland. It will help remind young people of the importance of local cultural heritage values and their own roots in their lives. A modern school also needs to restore the idea of regional education as civic education, which is necessary to shape competencies conducive to integration and openness to others. It is extremely important, especially in the current social situation related to the ongoing war in Ukraine.
Развитие экологической культуры через интеграцию естественнонаучных дисциплин
Authors: Губанова Лариса , Ермакова Елена , Каташинская Людмила , Кадысева Анастасия
Published: December 2023

В коллективной монографии представлен спектр вопросов, связанных с развитием экологической культуры в общеобразовательных и высших учебных учреждениях. Рассмотрены проблемы экологического образования и воспитания, приведен опыт организации учебно-воспитательного процесса общеобразовательных учебных учреждений города Ишима и ИПИ им. П. П. Ершова (филиал) ТюмГУ. Для студентов педагогических вузов естественнонаучного профиля, учителей школ, специалистов в области образования.
Работа для эколога и EHS специалиста – где найти и как устроиться? Пособие по поиску работы и выбору профессии
Authors: Пинаев Владимир , Семилетова Елена
Published: December 2023

Пособие подготовлено выпускниками для выпускников. В ней собран личный опыт работы в государственных и частных структурах. Профессиональная область – охрана окружающей среды (экология) и EHS (Environment, Health and Safety – охрана окружающей среды, пожарная и промышленная безопасность, охрана труда и первая помощь). Работник компетентный не только в вопросах охраны окружающей среды, но и в смежных отраслях более конкурентоспособен и востребован. Каждый из авторов рассказывает о своём опыте – достижениях и ошибках. Пособие предназначено для студентов и выпускников института экологии РУДН имени Патриса Лумумбы. Также материалы могут быть полезны для студентов и выпускников экологических и эколого-экономических специальностей. Авторы благодарят Серомлянову К.А, выпускника бакалавриата Института экологии 2023 за помощь в подготовке пособия. Авторы планируют привлечь внимание выпускников к этому изданию и надеются, что следующее издание будет еще более интересным и насыщенным.
METTL14-Mediated m6a Modification of CDKN2A Promotes the Development of Retinoblastoma by Inhibiting the p53 Pathway
Authors: Chen Jing , Zeng Bo
Published: December 2023

The methyltransferase 14, N6-adenosine-methyltransferase subunit (METTL14) and Cyclin-dependent kinase inhibitor 2A (CDKN2A) have been identified as involved in the regulation of various cancer progression, while their mechanism and regulatory effect in retinoblastoma (RB) is still unclear. Cell colony formation, CCK-8 as well as Western blotting were used to evaluate the proliferation, apoptosis as well as p53 protein level of RB cell line. The METTL14 and CDKN2A levels were detected by qRT-PCR or Western blotting when METTL14 was up-regulated or CDKN2A was down-regulated. MeRIP and Pearson analysis were performed to confirm the regulatory relationship between METTL14 among CDKN2A. We found that the levels of CDKN2A and METTL14 were abundant in RB samples, as well as RB cells. METTL14 enhances N6-methyladenosine (m6A) modification of CDKN2A to upregulate its mRNA and protein levels. The proliferation of RB cells can be inhibited by silencing CDKN2A, which promotes apoptosis and p53 protein level. Furthermore, high-expression of METTL14 eliminated the anti-tumor effect of CDKN2A silencing in RB progression in vitro. CDKN2A is mediated by METTL14-m6A modified and restrains p53 pathway activation to accelerate the malignancy of RB. This points to the METTL14-m6A-CDKN2A-p53 pathway axis as a possible prospective target for the future RB treatment.
Atmospheric Diary: Exploration of Diaristic Practice in Experimental Moving Image
Authors: Moon Il Sun
Published: December 2023

Diaristic practice in various modes of expression permeates the online environment with textual, visual, and aural documents of memories and life, including social media and writing platforms. Inspired by Jonas Mekas’s performative and reflective relationship between the artist and hand-held camera, this article examines three aspects of my moving image experiment, the Diary Project (2022-ongoing), in the concept of atmosphere that fluctuates sensational and poetic expression to the spatial formation and mental structure in moving image and physical space. Therefore, three parallel processes will be discussed: methods in Mekas’s practice, poetic expression in multi-frame editing, and finally, the atmospheric expansion to the physical exhibition space. My project explores different styles and forms, such as slow and fixed perspectives or rapid and shaky images in fragments of short footage collecting videos since 2019. Those fragments of times, places, and self in daily life are presented through multi-frame editing in the concept of the atmosphere. The sensation of the fragments of life amplifies the atmospheric sensation to the viewer and can be expanded to the active participation of creating an atmosphere in the exhibition space. As this is an ongoing project, this paper speculates the possible structure of the space in relation to the ambulation, both mental and physical, to generate further discussion on the expansion of the recording and editing processes to the poetic expression of the spatialisation, challenging the fixed and linear narrative to reconnect and remerge vibratory oscillation and mutual transformation between mental and bodily force.
The Semantics of Proper Names in George Eliot’s Novel “Adam Bede”
Authors:   Perm State University, Shirokova Ganna A.
Published: December 2023

The article dwells on a number of references to the Bible. Other basic ideas in the novel are also presented as regards Eliot's upbringing. This article attempts to systematize data on psychological manifestation in G. Eliot's novel Adam Bede (Adam, Seth, Dina, Hetty, Arthur), on the basis of which an analysis of the meanings of their names is carried out.
Ekphrasis in Sylvia Plath’s Poem “Yadwigha, on a Red Couch, among Lilies”
Authors:   National Research University «Higher School of Economics», Barinova Ekaterina V.
Published: December 2023

The article provides an analysis of ekphrasis in the poem "Yadwigha, on a Red Couch, among Lilies" by the American poet and writer Sylvia Plath. In the poem, inspired by Henri Rousseau's painting «The Dream», ekphrasis is revealed in the detailed description of the picture, precise transfer into the text of the painting’s imagery and colours. At the same time, emotions, individual perception and accents, characteristic of the poetess’ creative consciousness, are introduced into the detailed description of the painting. The poem is a traditional text for Plath, where the richness of visual images is closely intertwined with personal reflections and experiences.
The Leitmotif Organization of Jean Rhys’s Short Story “Till September Petronella"
Authors:   Southern Federal University, Matiunina Tatiana S.
Published: December 2023

The article examines the leitmotives found in the central story of Jean Rhys's collection "Tigers are Beautiful". Jean Rhys' short stories researcher and reader inevitably encounters a series of key images that largely predetermine and constitute a number of references to the subtext, elements of the author's artistic world. The problem-thematic complex of the story "Till September Petronella" consists of gender confrontation, existential crisis and war. It is revealed through elements of external psychologism (leitmotivs of the garden (tree, flowers, stone), mirrors and dresses), iconic loci of the cell (rooms) and recurring themes of loneliness and suicide, the search for identity. The leitmotif organization of Jean Rhys's narrative, underestimated by contemporary literary critics and readers, is of particular interest to researchers of modernist prose. A close reading of the story "Till September Petronella" allows us not only to get acquainted with Jean Rhys's literary work, but also to consider the principle of poetics elements in the process of revealing a complex of topics.
The Motive of the Look in the Story of H. Marias “Broken Binoculars”
Authors:   Perm State University, Suslova Inga V. , Teploukhova Antonina V. ,   Perm State University
Published: December 2023

The article analyzes the functioning of the gaze motif in the story of the modern Spanish writer Javier Marias «Broken Binoculars» (1998). The narrative organization and the concept of the hero-narrator, who takes the position of an anonymous observer, is commented. It is concluded that the main function of the plot-forming motive of the look in the story is to express the attitude of the characters towards themselves and the world. The joint use of one optical device (symbolizes a point of view) contributes to dialogue and the establishment of mutual understanding between the characters. The gaze motif is involved in the implementation of the main existential themes of H. Marias' work: loneliness, a sense of insecurity, fears of being misunderstood, unnoticed, losing one's individuality.
Rock poetry vs Rock Lyrics: The Problem of Correlation of Concepts
Authors:   Perm State University, Khokhryakov Andrei L.
Published: December 2023

The article considers correlation of ‘lyrics’ and ‘poetry’ within rock music. Addressing their difference in Western (English-speaking) and Russian critical tradition,the author reveals both their distinctive characteristics and likeness (as well crosscharacter) in historical and socio-cultural aspects. The author comes to the following conclusion: as a syncretic and evolving form of art, not only rock poetry does overcome the boundaries of lyrics as a sub-genre, it also reveals itself in a broader perception of lyrics as a division of literature, in the sense of poetry, serving an object for literary criticism
Klingsohr's Fairytale in the Novel “Henry von Ofterdingen” by Novalis: Gnostic Myth
Authors:   Moscow Pedagogical State University, Chernyavsky Ivan B.
Published: December 2023

The article is devoted to the problem of the reception of the Gnostic myth in Novalis' novel “Henry von Ofterdingen”. The fairytale of Klingsohr, which is the center of the novel, embodies the ideas of the Jena romantics about a new mythology, in which various religious and mythological systems would be united in a new capacity. Along with explicitly expressed Hellenistic and Christian reminiscences, there are hidden references to Gnosticism in the novel, which are revealed when the text is investigated at a more general level. By means of a comparative analysis, the closeness of a number of images, motifs and themes of the fairytale with the ontological and cosmogonic ideas of the Gnostics, united in mythology, is revealed. This closeness is most fully realized in the image of Sophia – the divine wisdom incarnation, which has a decisive influence on the phasic changes in the world order both in the Klingsohr's fairytale and in the Gnostic myth.
The Romantic Tradition in the Works of Wolfgang Hilbig
Authors:   Voronezh State University, Chugunov Dmitrii A.
Published: December 2023

The article examines the importance of the romantic tradition in the work of Wolfgang Hilbig. It is shown that the writer's works are not only a reflection of the ideological and social conflicts of German life at the end of the twentieth century, but an example of an allusive appeal to the ideas of Romanticism and world culture in general. Romantic elements of behavior can be traced in the biography of W. Hilbig and already in his early lyrics. In the novels “Ich” and “Das Provisorium”, the theme of bourgeoisness and vulgarity of being, characteristic of romantics, sounds. In general, the work of W. Hilbig can be perceived as an expectation of a new sacred Word.
Folk Dance Ensemble «Samotsvety» as a Place of Memory of its (Former) Participants
Authors:   Perm State University, Narsky I. V.
Published: December 2023

This article uses the example of the Chelyabinsk Tractor Plant dance ensemble to examine the Union-wide process of appropriation of the state project by the leaders and participants of amateur art activities, which in turn aimed at de-nationalization of their leisure time. Using the concepts of the fl uid text and cultural memory, the Samotsvety amateur ensemble is considered as a site of memory for its participants. To this end, the forms and contents of affi rmative memories of the ensemble’s past victories and the memory strategies of the «losers,» whose names and merits do not appear in the offi cial texts, are examined in turn. The central thesis of the article is that both the «winners» and the «losers» in the narratives about the past of the «Samotsvety» were equally successful in «privatizing» the state project of artistic amateur dance.
Before Rubinstein Street, 13: Self-Organization of Rock Musicians “From Below” in the 1970s
Authors:   European University at St. Petersburg, Samoylova A. M.
Published: December 2023

TThe article is devoted to the prehistory of the Leningrad rock club. Particular attention is paid to the attempts to create a music club coming from the underground environment`s activists – brothers G.B. and V.B. Zaitsevs. The author comes to the conclusion that rock musicians were not organized into a club by someone «from above» but were forming a legal club themselves during the 1970s. Rock music in the USSR was traditionally kept under surveillance but the preparation for the Leningrad rock club`s creation is a story telling how the initiative «from below» was supported and incorporated into the Soviet landscape without losing its original idea which was not particularly «out-Soviet» as is usually believed in historiography.
Influence of heat treatment on the structure and mechanical properties of zirconium dioxide crystals partially stabilized by samarium oxide
Authors: Borik M. A. , Kulebyakin A. V. , Lomonova E. E. , Milovich F. O. , Myzina V. A. , Ryabochkin P. A. , Sidorova N. V. , Tabachkova N. Yu. , Chislov A. S.
Published: December 2023

The effect of high-temperature treatment in different media on the phase composition, microhardness and fracture toughness of (ZrO2)1-х(Sm2O3)х crystals with x = 0.02÷0.06 has been studied. The crystals have been grown using direction melt crystallization in a cold skull. The crystals have been heat treated at 1600 °C for 2 h in air and in vacuum. The phase composition of the crystals has been studied using X-ray diffraction and Raman scattering. We show that samarium cations enter the ZrO2 lattice mainly in a trivalent charge state and do not change their charge after air or vacuum annealing. The as-annealed phase composition has changed in all the test crystals except for the (ZrO2)0.94(Sm2O3)0.06 composition. After air or vacuum annealing the (ZrO2)1-x(Sm2O3)x crystals with 0.002 ≤ x ≤ 0.05 contain a monoclinic phase. The (ZrO2)0.94(Sm2O3)0.06 crystals contain two tetragonal phases (t and t´) with different tetragonality degrees. After air or vacuum annealing of the (ZrO2)0.94(Sm2O3)0.06 crystals the lattice parameters of the t and t´ phases change in opposite manners, suggesting that the tetragonality degree of the t phase increases whereas the tetragonality degree of the t´ phase decreases. The microhardness and fracture toughness of the as-annealed crystals depend on the Sm2O3 concentration in the solid solutions. The formation of the monoclinic phase in the (ZrO2)1-х(Sm2O3)х crystals with 0.037 ≤ x ≤ 0.05 significantly reduces the microhardness and fracture toughness of the crystals. Annealing of the (ZrO2)0.94(Sm2O3)0.06 crystals triggers more efficient hardening mechanisms and thus increases the fracture toughness of the crystals. We show that air or vacuum annealing of the (ZrO2)0.94(Sm2O3)0.06 crystals increases the fracture toughness of the crystals by 1.5 times as compared with that of the as-grown crystals.
HORIZONTAL WELL COMPLETION SYSTEMS WITH MULTI-STAGE HYDRAULIC FRACTURING FOR LOW-PERMEABILITY, POORLY DRAINED, HETEROGENEOUS AND DISMEMBERED RESERVOIRS
Authors: Ovchinniko V.P. , Shamsutdinov N.M. , Leontiev D.S. , Ovchinnikov P.V. , Khafizov A.R. , Belousova I.V.
Published: December 2023

Currently, the most effective method of intensifying the inflow of hydrocarbons and increasing oil recovery in productive formations in wells, in particular with a horizontal well, remains the technology of hydraulic fracturing (HF). In many regions, according to some domestic and foreign researchers, this is the only technology for developing fields with hard-to-recover hydrocarbon reserves confined to lowpermeability, poorly drained, heterogeneous and dissected reservoirs, which can significantly increase hydrocarbon production and make wells economically viable.Multi-stage hydraulic fracturing (MSHF) has established itself as one of the main methods of reservoir stimulation in the Russian Federation. The main goal of this method is to create highly conductive fractures in an oil and gas saturated reservoir throughout the horizontal section of the wellbore. To do this, an alternate series of hydraulic fracturing is performed, the result of which is the maximum production rate of hydrocarbons.Over time, oil and gas companies in the Russian Federation are becoming more demanding on the technical and technological parameters of MSHF in terms of the number of stages, the length of the horizontal section of the well, the possibility of re-fracturing and management of intervals/ports after its commissioning, and much more.The authors of the article propose to consider and analyze modern horizontal well completion systems with multi-stage hydraulic fracturing for low-permeability, low-drainage, heterogeneous and dissected reservoirs in order to form their rating.
STATIONARY MODE OF FLUID FLOW IN THE PIPELINE IN THE PRESENCE OF ASSOCIATED SAMPLING AND PUMPING
Authors: Chuprov I.F. , Parmuzina M.S. , Lyutoev A.A.
Published: December 2023

Pipeline transportation of oil and petroleum products plays a significant role in the transport system of the Russian Federation. When operating oil pipelines, reliability and energy efficiency are the most important criteria. To achieve these indicators, it is necessary to perform optimal technological modes. When constructing models of technological regimes, a methodology is used in which the movement of oil and petroleum products is considered as steady. Based on this assumption, the throughput, pump operating modes, strength characteristics and other parameters are determined. During the operation of the equipment, almost every day it is necessary to switch from one mode to another, which entails unsteady fluid movement for some time. At the same time, the unsteady mode makes up a small part of the total operating time of the system.The beginning of studies of unsteady fluid processes in pipes dates back to the last quarter of the 19th century. N. E. Zhukovsky made a fundamental contribution to the study of this problem. His classic work on water hammer in water pipes was the beginning for the creation of a large number of works in pipe hydraulics. The problem was solved for an ideal elastic fluid, i.e. without taking into account the friction forces against the pipe walls. The resulting formula, according to which the pressure increment is proportional to the velocity, has received numerous experimental confirmations for cases when it is possible to neglect pressure losses to overcome hydraulic resistances. N. E. Zhukovsky also obtained a formula for determining the sound velocity of a liquid droplet in a pipe with elastic walls. It is proved that this speed depends on the pipe material and its thickness.In the future, a large number of works were carried out to study the flow of liquid and gas in round pipes. The fundamental works of I. A. Charny, who obtained a mathematical model in the form of a system of partial differential equations of hyperbolic type, proved fruitful in this direction. Linearization of the equation, taking into account viscosity and hydraulic resistance allowed the researcher to obtain solutions to a number of engineering problems.The introduction of the Dirac function in the description of selectionpumping at specified points made it possible to describe processes in complex pipelines with one partial differential equation.This article discusses a horizontal section of the pipeline with sampling and pumping points. A stationary process for a drip liquid is considered. The problem is solved using the sine-Fourier transform.
ANALYSIS OF EXTREME VALUES FOR DATA PROCESSING OF IN-LINE TECHNICAL DIAGNOSTICS
Authors: Borovikova S.A. , Brikov A.V.
Published: December 2023

The pipeline system plays an important role in the structure of enterprises engaged in the transportation of significant volumes of oil and gas over long distances. However, steel pipelines are subject to corrosive factors, which can lead to defects and a reduced service life. Statistical analysis methods have recently been increasingly used to maintain structural reliability and ensure safe operation of equipment, both in the oil and gas industries. One method of statistical modeling is extreme value analysis, which can be used to extrapolate data from random inspection checks to non-investigated areas. The article is devoted to the assessment of the possibility of using statistical methods for analyzing data of in-line technical diagnostics (ITD) to ensure the integrity of trunk pipelines. The ITD results of one section of the export pipeline were used to determine the maximum corrosion rate of the entire length of the pipeline by extrapolating the Gumbel statistical distribution. The algorithm for constructing the Gumbel distribution is given. Plotting the autocorrelation function was used as a method for determining the independence of measurements. The belonging of the analyzed sample to the Gumbel distribution was confirmed by calculating the Anderson-Darling consent criterion. The ITD results of the remaining sections of the oil export pipeline confirmed the possibility of using extreme analysis to determine the maximum corrosion rate and increase the efficiency of pipeline inspection measures. Thus, it was concluded that statistical modeling is able to provide an estimate of the maximum corrosion rate during partial pipeline ITD and, therefore, savings in financial and time resources.
Prevalence of Malnutrition using Anthropometric Index among the Sabar Tribal Preschool Children of Purulia District of West Bengal, India
Authors:   Public Health and Nutrition Research Unit, Department of Anthropology and Tribal Studies, Sidho-Kanho-Birsha University, Purulia 723 104, West Bengal, India, Mahata Latu L. , Biswas Sadaruddin ,   Public Health and Nutrition Research Unit, Department of Anthropology and Tribal Studies, Sidho-Kanho-Birsha University, Purulia 723 104, West Bengal, India, Bisai Samiran ,   Public Health and Nutrition Research Unit, Department of Anthropology and Tribal Studies, Sidho-Kanho-Birsha University, Purulia 723 104, West Bengal, India
Published: December 2023

Background It is well-established that tribal preschool children are still suffering from different types of malnutrition. Although data on the prevalence of malnutrition in the form of thinness (low body mass index (BMI) for age) among preschool children, particularly tribal preschool children in India, is limited. Objective The purpose of this study was to look at the anthropometric characteristics as well as the prevalence of malnutrition in the form of thinness using recent age and sex-specific BMI cut-off values. Methods The present cross-sectional study was carried out at seven different villages in the three Sabar concentrated blocks of the Purulia district. A total of 104 (49 boys and 55 girls) Sabar preschool children (aged 2-5-years) were investigated. Preschool children from seven Sabar-dominated villages were investigated. The prevalence of malnutrition in the form of thinness was assessed using an age- and sex-specific international BMI cut-off. Results There were significant age variations in mean weight and height observed in both sexes (p<0.001). The overall prevalence of malnutrition among Sabar preschool children was 80.77%. Boys (85.71%) were more malnourished (low BMI-for-age) than girls (76.4%). Overall, about 37.5% of preschool children were severely malnourished. Conclusion The results revealed that their nutritional status was not satisfactory. Therefore, an appropriate nutritional intervention programme should be taken to reduce the burden of malnutrition among the Sabar preschool children of Purulia district, West Bengal, India.
Complete Remission of Multiple Pulmonary Metastases of Endometrial Adenocarcinoma Treated with a Mixture of Low Molecular Weight Fucoidan and Canvaria gladiata Extract: A Case Report
Authors:   Integrative Medical Center, Clinic Ginowan, Ginowan-Shi, Okinawa 903-0215, Japan, Tengan Isamu , Takahashi Hidenori ,   Integrative Medical Center, Clinic Ginowan, Ginowan-Shi, Okinawa 903-0215, Japan and Moffitt Cancer Center Department of Immunology, Moffitt Cancer Center, Tampa, FL 33612, USA, Watanabe Shaw ,   Tokyo University of Agriculture, 1 Chome-1-1 Sakuragaoka, Setagaya City, Tokyo 156-8502, Japa
Published: December 2023

Endometrial cancer (EC) is the most common malignant tumor in post-menopausal women, and the lung is one of the organs to which endometrial adenocarcinoma metastasizes. Chemotherapy is helpful for various malignancies, but not all are successful. A 71-year-old-Japanese-woman was diagnosed with metastatic lung cancer stage IV of primary endometrial adenocarcinoma. She received chemotherapy and hormone therapy after a total hysterectomy and pelvic lymphadenectomy. Subsequently, she visited this clinic for a second opinion as the metastatic lung cancer had repeated remissions and recurrences. Here, the authors report a case in which complete remission of metastatic lung cancer was achieved by using a product containing low molecular weight fucoidan extract (LMF) and Canavalia gladiata extract (CG) (LMF-CG) in combination with Medroxyprogesterone acetate (MPA) hormone therapy.
Can Weight Bearing Aerobic Exercise be Done Safely with an Active Diabetic Plantar Foot Ulcer and Can It Improve Healing Time
Authors:   Salford University, Manchester, UK, Fall Catherine
Published: December 2023

Introduction Diabetic foot ulcer (DFU) is a huge economic burden on the National Health Service (NHS). Research on the benefits of aerobic exercise on the vascular system in diabetics is vast, however research on the benefits of aerobic exercise on diabetics with active plantar DFU is slim. The purpose of this review is to determine whether weight bearing aerobic exercise can be safely undertaken with an active plantar DFU and whether exercise can in fact improve ulcer healing time. Method Five papers that included patients with active DFU taking part in weight bearing or semi weight bearing aerobic exercise programmes >10-weeks were found and reviewed. Findings Non-weight-bearing or semi-weight bearing exercise in the presence of DFU alongside severe diabetic neuropathy (DN) is safer and more feasible in the aim to try and stop the regression of diabetic complications. It has not been concluded whether aerobic exercise improves ulcer healing time. Proposal A pre-test, post-test randomized controlled trial (RCT), 30 participants (15 male, 15 female) with type 2 diabetics (T2D) and active plantar DFU, recruited from the Peter Mount Diabetes and Endocrine clinic at the Manchester Royal Infirmary, randomized into an evenly split intervention group/control group. Intervention group will take part in fully supervised 12-week semi weight bearing aerobic/resistance-based exercise programme: 3×per week working at 40-60% heart rate reserve (HRR) (Karvonen method) at the rehabilitation gym, Manchester Royal Infirmary (MRI). Participants will wear a removable air cast walker or equivalent. Monthly motivational interviewing and bi-weekly foot checks will be undertaken. Control group will continue usual wound care plan from the diabetic clinic. Outcome Measures: Baseline, 6, 12-weeks: transparent ruler measurement, toe brachial pressure index (TBPI) toe pressures, SPO2 , ankle brachial index (ABI), fasting blood glucose (FBG), blood cholesterol levels, Semmes monofilament test, blood pressure (BP), body mass index (BMI). Statistically analysed by statistical package for social sciences (SPSS) version 28 at p<0.05.