bluuebunny/crossref_metadata_2025 huggingface dataset:
Controlled physical activity as a prerequisite for the development of cognitive functions (using the example of PSM futsal groups)
Authors: Deineko I.V. , Orlenko N.A. , Ship L.O. , Paradnik S.G.
Published: December 2024

It is well known that in game sports, in particular in futsal, the ability to maintain maximum concentration on key matches until the end of the game is invaluable. Analyzing unsuccessful team performances, practicing coaches note that players lose concentration for a moment at critical moments, which often leads to defeat by opponents. The ability to focus on the most relevant signals from the environment is fundamental to achieving effective work.
Using the example of exercises, we tried to define cognitive efficiency as the performance of mental processes related to perception, memory, intelligence and action. When performing the task, the players over time began to adjust to changes, while remaining focused, making decisions in a matter of seconds and adapting to the tasks of the exercise. The improvement in the level of training occurred against the background of regular training with clear performance of tasks for attention. Based on the results, which did not deteriorate after increasing the time to perform the exercise, we were able to improve the level of attention, which will allow young football players to demonstrate better responses to tactical actions at the competitive level when optimizing the training process.
The level of adaptive stress of the body of young sportsmen-futsal players
Authors: Dychko D. V. , Dychko O. A. , Dychko V. V.
Published: December 2024

The article is devoted to the study of the level of adaptive stress of the body of futsal girls under the influence of physical load at the ages of 15 to 16 and those who do not play futsal. Research methods: Female futsal athletes of the Futsal Academy (average age of female futsal athletes 15.67±0.08 years) and a group of peers who do not play futsal (average age 15.44±0.07 years) participated in the study. A capillary blood sample was taken in the morning (from 7 to 9 a.m.) on an empty stomach before eating, the number of leukocytes was studied in the Goryaev chamber, the leukocyte formula was studied in a Giems-stained blood smear. The results of the study: it was established that the physical exercise program of the game sport (futsal) does not affect the absolute and relative number of the main populations of immunocompetent cells in the peripheral blood of female futsal athletes. Only one subpopulation of these cells - rod-shaped neutrophil granulocytes, the absolute (by 30.77%) and relative (28.31%) number in the peripheral blood increases. But the mature and physiologically active subpopulation (segmented leukocytes) tends to increase: the absolute number of segmented nuclear neutrophil granulocytes compared to the control by 1.13%, the relative number by 0.87%. In general, playing sports does not lead to significant changes in the absolute and relative number of immunocompetent cells in the peripheral blood of female futsal athletes. Adaptation processes in girls who are not futsal players are in the zone of calm activation and in the zone of increased activation, girls who are futsal players have a lower adaptation level and are in the training zone. In conclusion, the article highlights that, in general, the adaptation processes of female futsal players remain almost the same compared to the control group of non-futsal players.
Criteria for assessing the morphological and functional state of the development of the organism of qualified football players in accordance with the specifics of the game role
Authors: Karpa Ihor , Ripak Ihor , Shanta Ivan , Lobasyuk Vitaliy
Published: December 2024

In the conditions of competitive activity players have to perform a large amount of work with different load, and high indicators of morphofunctional development of the leading systems of the organism allow to transfer them effectively. High anthropometric indices were determined in strikers, where the average body length is 180.8±11.4 cm, body weight is 73.6±11.6 kg, chest circumference is 97.7±13.8 cm. Defenders have high values of the mass-height index of Ketle. The highest index of physical work capacity of qualified football players was determined in players of the midfield line, as for the indexes of maximum oxygen consumption there is no significant difference in the indexes of physical work capacity between players of different game amplitude (p<0.05).
In football the rational construction of the training process is connected with reliable information about the level of morphofunctional state of the organism of football players. The obtained results of the research in general coincide with previous researches in the field of football and confirm that the specificity of the manifestation of functions of players of different game roles is influenced by the morphological and functional state of development of their organism.
Value orientations as a factor of the formation of individual physical education of school students
Authors: Marchenko O. , Rostov O.
Published: December 2024

The article presents the results of the study of value orientations of high school students. The following methods and techniques were used: theoretical analysis of professional scientific and methodological literature by Ukrainian and foreign authors, questionnaires, modified methodology for studying value orientations by M. Rokic, methods of mathematical statistics. It was found that the level of differentiation of values in adolescents varies from a clear structure to the absence of one. Three groups of respondents were identified, which differ in the range of estimates used to characterize the importance of different values. According to the study, young men and women highly value manners, cheerfulness, efficiency in business, courage, honesty, and responsibility. The survey revealed a low position of health in the hierarchy of girls' values (8th place in the ranking), while boys' health is among their priority values (2nd place in the ranking). According to the survey, 43.9% of respondents defined healthy lifestyles as a list of measures aimed at maintaining health, 32.7% consider healthy lifestyles to be an individual behavioral system, and 31.3% provide a complete and adequate definition of healthy lifestyles.
Integration of physical fitness control methods for athletes in higher education institutions
Authors: Pylypei L. P. , Zaiats S. A. , Diachenko S.V.
Published: December 2024

The article addresses the issue of integrating types of physical fitness control for athletes in higher education institutions. It examines contradictions in the use of control types and issues in managing the athlete training process. A theoretical analysis and summary of scientific-methodological lit-erature and online information sources were conducted. A survey was carried out with 3,800 student-athletes.
The survey helped identify the problem areas within the student-athlete training system in higher education institutions. The effectiveness of control types was assessed during the survey, with results calculated using mathematical statistics methods. Findings show that only 10 % of respondents use the critical type of control known as operational control. The survey results also correlate with the level of sports achievements across all sports disciplines. Operational control, used by only 10 % of athletes, has a significant impact on managing the training process. Thus, it can be concluded that the low usage of most control types hinders effective management of athlete preparation. Employing operational control will be crucial to enhancing the training effectiveness of student-athletes in higher education institutions.
Оlympic education is a part of the national education system
Authors: Radchenko Lidiia , Ermolova Valentina , Krol Iryna
Published: December 2024

The article is aimed at highlighting the place and role of Olympic education in the national education system and outlining the ways of its use in the educational process of schoolchildren and students. Considering Olympic education as a pedagogical process based on the value potential of the Olympic Movement and related to social processes in society; based on the belief that Olympic education contributes to the humanitarian development of participants in the educational process, the study identifies and systematises programmes and projects implemented for schoolchildren and students in Ukraine, both within educational institutions and in extracurricular time.
Integrated training methodology for developing technical and tactical skills in football players at the preliminary basic training stage
Authors: Sautov Rakhmet , Tyshchenko Valeria
Published: December 2024

This article explores the effectiveness of stage-based training for football players at the preliminary basic training stage, specifically in the formation and development of their technical and tactical skills. Modern training approaches are examined, including the method of combined influence and the traditional segmented methodology. The combined influence methodology integrates physical and technical-tactical exercises, allowing the simultaneous development of fundamental sports skills and their rapid adaptation to game conditions. The purpose of the study is to substantiate the relevance of a stage-based development of skills and technical abilities in football players during the preliminary basic training stage. The object of the study is the training process for football players at this preparatory stage, while the subject of the study focuses on the indicators of physical fitness of players at this level. Research methods include analysis and synthesis of specialized literature, pedagogical observation, pedagogical experiment, and methods of mathematical statistics. Study Organization and Methods: Fifty football players at the preliminary basic training stage participated in the training experiment. Research Results. Comparing the results of the experimental and control groups demonstrates the advantages of this approach, as it contributes to accelerated development of specific skills, as well as improved coordination and speed-strength characteristics among the athletes. The experimental results showed that football players trained with the combined influence methodology performed significantly better in executing technical maneuvers such as dribbling, ball stopping, passing, and shooting at the goal, and generally managed game functions more effectively. There was a 30% to 50% increase in performance indicators compared to the control group, which supports the efficacy of the integrated approach in training young athletes. Conclusions. The study's findings confirm that applying a stage-based, integrated approach to training football players is an essential condition for ensuring consistent athletic progress at the basic training stage. This methodology promotes the harmonious development of technical, physical, and tactical skills, enhances coordination, speed-strength qualities, and players’ adaptability in competitive activities.
Esports as a rehabilitation tool for military personnel: overcoming stress and stress-related conditions
Authors: Yakovenko O.O. , Shynkaruk O.A. , Byshevets N.G. , Stroganov S.V.
Published: December 2024

The potential of esports as a rehabilitative tool for military personnel, particularly in the context of stress and stress-related conditions, is a promising avenue for further investigation. This study examines the potential of esports to reduce stress and enhance psychological well-being. This study examines the mechanisms through which video games and esports activities contribute to reducing anxiety, increasing emotional stability, and developing stress resistance. Esports is conceptualized as a relaxation and cognitive stimulation tool, which helps in effective stress management through distraction and engagement in-game tasks. Particular attention is paid to the role of social interaction in team games, which contributes to the development of a sense of support and social integration. The practical aspects of using esports in rehabilitation and stress management programs are highlighted.
This study considers the potential of esports as an innovative means of rehabilitation for military personnel who have experienced stress and stress-related disorders. The relationship between gaming activities and psychological adaptation is analyzed, and the effectiveness of esports in overcoming the effects of combat stress is substantiated. Esports is proposed as a way of psychological support that promotes social integration and improves the emotional state of veterans, reducing the level of anxiety, depression, and PTSD.
Esports are positioned as an emerging pathway for veterans to transition into civilian life, with opportunities for professional development in the gaming industry, from content creation to esports coaching. This dual function—as therapy and career catalyst—makes esports a uniquely versatile resource. This study concludes by emphasizing the need for interdisciplinary collaboration to expand research into esports' rehabilitative potential, particularly in anxiety and social reintegration challenges.
Роль медіа у популяризації жіночого кіберспорту
Authors: Yakovenko O.O. , Shynkaruk O.A. , Stroganov S.V. , Petryk O.O. , Golovanova N.L.
Published: December 2024

The role of media in popularizing women's esports has gained increasing scholarly attention as the industry continues to grow in scale and influence. This article explores the multifaceted role of media in fostering the development and visibility of women's esports, addressing the unique challenges faced by female players, teams, and tournaments. It comprehensively analyzes the interplay between traditional media, streaming platforms, social networks, and community-driven initiatives, identifying their contributions to increasing audience engagement and challenging gender stereotypes.
Key elements include the growing presence of women's esports on streaming platforms such as Twitch and YouTube Gaming, which facilitate direct interaction between players and audiences, enhancing viewer loyalty and promoting inclusivity. The analysis highlights the dynamic nature of media engagement, emphasizing the power of visual platforms like Instagram for sharing tournament highlights, and the conversational appeal of Reddit, which enables in-depth discussions about matches and teams. These platforms are crucial tools for expanding visibility and creating a positive image of women's participation in esports.
The role of influencers and content creators is particularly significant, as they help bridge the gap between professional players and the general public. Influencers amplify the reach of women’s tournaments by integrating narratives of resilience and success into their content, thus reshaping public perceptions and sparking interest in female-led teams. This article also examines how collaborative efforts among players, organizers, and media outlets contribute to a supportive ecosystem for women's esports. Media can address existing barriers and attract a more diverse audience by creating communities around tournaments, promoting relatable player stories, and focusing on inclusivity.
The findings suggest that the strategic use of media in promoting women’s esports has the potential to redefine the esports landscape. With a focus on inclusivity, equal representation, and community-building, media can be a powerful catalyst for breaking down barriers and ensuring sustainable growth for women in esports.
Analysis of competitive activity in e-sports and determination of directions of its development
Authors: Yakovenko O.O. , Shynkaruk O.A. , Pinchuk V.M. , Kuzmenko D.S.
Published: December 2024

The research also analyzes the popularity of specific esports disciplines, identifying key trends such as the rise of team-based strategy games like League of Legends and Dota 2, as well as tactical shooters like Counter-Strike: Global Offensive. A detailed evaluation of quantitative indicators such as the number of active players, tournaments, and viewership on platforms like Twitch provides insights into which esports are most popular and why. For instance, Counter-Strike: Global Offensive continues to dominate in terms of player participation, while League of Legends holds a significant lead in terms of global viewership. These disciplines show strong growth patterns, reinforced by the support of professional tournaments, high-profile sponsorships, and the extensive fanbase these games maintain.
The paper highlights genre diversity as a significant driver of esports' growth, showcasing the distinct appeal of multiplayer online battle arena (MOBA) games, first-person shooters (FPS), and card games. This genre variety not only attracts different player types but also enhances the overall viewer experience. Streaming platforms such as Twitch are identified as essential tools for the expansion of esports, offering a means of engaging global audiences through live broadcasts, real-time interactions, and fan-centric content.
The study confirms the global reach of esports, underscoring its significant economic impact and its growing cultural influence, particularly among younger generations. Esports is not just a form of entertainment but also a vehicle for technological innovation, social interaction, and professional development, offering opportunities for players, coaches, analysts, and various professionals within the industry. The findings further highlight how esports has become a critical part of digital culture, with countries like South Korea, China, and the United States leading the way in the formalization and institutionalization of competitive gaming.
Finally, the research provides recommendations for the sustainable development of esports, emphasizing the need for continued genre diversification, the strengthening of technological infrastructures, and the expansion of viewer engagement through interactive and immersive experiences. This will ensure that the esports ecosystem remains robust, attracting new participants and maintaining the interest of both players and fans in the long term. The paper also proposes strategies for improving the accessibility of esports in emerging markets, where the necessary technological and financial resources are still developing. By addressing these factors, esports can continue to grow and solidify its position as a mainstream, globally recognized form of entertainment.
PREPARATION AND HOLDING OF MASS SPORTS EVENTS AT THE UNIVERSITY AMONG STUDENTS OF ALL FACULTIES
Authors: Mykhailenko V. , Zhuravl’ov S. , Khoruzheva L. , Yunak V. , Dotsenko L.Z.
Published: December 2024

Much has been done to develop the system of events in recent years. Nevertheless, it is necessary to return once again to the problem of using events as a tool, a method of managing the sports movement. However, it should be noted that in sports management the role of general laws and methods based on them is great: administrative and legal; economic; ideological. The essence of managing the sports movement with the help of a system of events is that: changes in the system of events have the property of causing a corresponding restructuring in the social institution of physical culture and sports itself; the level of sports results and the nature of their change lead to the need to make appropriate adjustments to the activities of sports organizations.
The system of events as a management method functions at all levels, from management on a national scale to management in a work collective, the educational and training process. Analysis of the system of events indicates both the highest stability in the principles of their implementation, and in the constant changes of the system itself. The main organizational principle of the system is the phased implementation of events, starting from physical education and sports clubs of enterprises, organizations, educational institutions to republican events and year-round Universiades and Spartakiads. The system of events is implemented based on the following principles: stability of event calendars at all levels, their organization, allowing to create conditions for systematic continuous training of athletes throughout the year; phased formation of the event calendar, creating prerequisites for mastering increased (in volume and intensity) loads; strict adherence to age continuity in planning competitive loads, from beginners to top-level athletes.
ASSESSING THE SUITABILITY OF SCHOOL SURROUNDINGS FOR CHILDREN'S MOBILITY USING A PARTICIPATORY MULTI-CRITERIA APPROACH: THE CASE OF A PRIMARY SCHOOL IN GUELMA, ALGERIA
Authors: Meryem Lamari  , Youcef Lazri  , Hocine Bougdah
Published: December 2024

The surroundings of the school are sensitive spaces that play an integral role in the sustainability of children's mobility on their journeys to school. Indeed, this vulnerable category is in daily interaction with an urban environment that must be friendly and suitable. This work is based on the synthetic criteria and indicators of UNICEF and Its agencies, which are appropriate for the children’s needs. The study presented here will evaluate the suitability of the school surroundings for children's mobility through a participatory multi-criteria analysis that focuses on the child as an inseparable actor in the analysis process. The case study for this field of investigation is a primary school located in the centre of Guelma, a city in the Northeast of Algeria. A survey questionnaire was conducted to collect quantitative and qualitative data on their experience of mobility, from a sample of 169 pupils (5 to 12 years old). The synthetic criteria were weighted by frequency analysis using SPSS according to the surveyed population. The data shows that 23 % of the participants ranked the stability of the social structure criterion in the first position. The suitability of multi-criteria approach will be tested by applying it to the synthetic criteria ranked first. The results show that the majority of social indices with a direct influence on children's mobility have negative performance values, synonymous with non-suitability. Other indicators have low values of positive performance, synonymous with an average suitability level, which still needs to be improved. Overall, this participatory multi-criteria analysis shows that the school environments studied do not satisfactorily meet the safety and well-being requirements that are essential for sustainable school mobility adapted to children's needs.
DETERMINATION OF YIELD, PRODUCTIVITY AND CHEMIAL COMPOSITION OF EUCALYPTUS OIL FROM DIFFERENT SPECIES AND LOCATIONS IN INDONESIA
Authors: Achmad Hilman Naafi , Rana Hana Efrika , Fadilla Isma , Fajar Anugerah , Manurung Robert , Abduh Muhmmad Yusuf
Published: December 2024

There are many factors that influence the biosynthesis of eucalyptus oil which primarily contains 1,8-cineole. Exploratory studies to determine the yield and chemical composition of eucalyptus from different species are necessary. The aim of this was to investigate the yield, productivity and chemical composition of essential oil from different species of Eucalyptus in Indonesia. Three different species of Eucalyptus from different locations in Indonesia was studied particularly E. citriodora, E. urophylla, and E. viminalis. The essential oil contained in the leaf was extracted using a steam-distillation technique. The yield of Eucalyptus oil varies from 1.6 % â€“ 3.3% (w/w, dry weight) which depends on the species, plant location, and leaf age. The chemical composition was analyzed using a Gas Chromatography-Mass Spectrophotometry. The major component in Eucalyptus oil was determined as 1,8-cineole and citronellal and varied from 18.2-82.8%. The productivity of the eucalyptus oil was estimated in the range of 47.4-3771.2 kg/ha/year.
FACTORIAL ANALYSIS OF GROWTH MARKERS FOR MESOPHILIC BACTERIUM, Pseudomonas putida (ATCC 49128)
Authors: AHMAD MANI MALAM
Published: December 2024

Study into bacterial growth pattern from conventional perspectives is quite defective and strenuous, due to its failure to put down footprint concerning the interactions or simply complementary effects of these factors influencing the bacterial growth. In this study, a restorative screening of salient and collaborative effects to Pseudomonas putida growth markers was evaluated by two levels (24-1) FFDOE. Growth was found to respond remarkably on nutrient concentration coupled with other independent variables. The factorial models have been established from experimental design to study the individual and interactions effects toward the response within the selected variables of nutrient concentration, acclimatization, agitation, and temperature. These were statistically validated using analysis of variance (ANOVA). The results revealed that the model terms were invigoratingly significant with F-value of 415.17 at p <0.002. The model term having the most distinctive impact on the response was nutrient concentration. And the magnitude of the influence is in the ascending order A > D > AD > C > AC. Based on the R2 and adjusted R2 higher than 95%, the estimated model terms spell high degree of relationship between observed and predicted values, thus the prediction ability of the models is maintained. It could, therefore, be concluded that nutrient concentration, temperature, and agitation were variables that greatly influence growth at a specific optimal range.
TREATMENT OF SG. PUSU USING NOVEL COAGULANT
Authors: Tajuddin Husna Ahmad , Ahmad Nor Yusilawati
Published: December 2024

Effective treatment of wastewater is important in order to achieve the sustainable development. High efficiency and low capital requirement are the major prerequisite for the implementation of advanced wastewater treatment. Among various treatments, coagulation-flocculation process using chitosan can be considered as low operational cost and effective in wastewater treatment. Recently, advanced processes in nano-adsorbent by using magnesium oxide (MgO) has been also attracting the attention in water remediation in increasing removal organic dyes and heavy metals. Therefore, this study was conducted to investigate the efficiency of coagulation-flocculation process for removing of turbidity, suspended solids and BOD from Sg. Pusu. Chitosan, MgO coated with chitosan and MgO as a coagulants in treatment of river water were studied using standard jar test apparatus. For optimization study, a set of experiment was designed using response surface methodology (RSM) to optimize the adsorption of MgO coated with chitosan. The result shows that chitosan-MgO showed a good removal of turbidity, suspended solids and COD with respectively 92 %, 98 % and 91 % from the optimization of adsorption of chitosan-MgO. The effect of coagulant dosages; chitosan on turbidity removal was found to be superior was observed at reasonable lower amount of coagulant of 0.25 mg/L with 95 % removal of turbidity in 30 minutes of settling time. The results showed that coagulation-flocculation is effective as a treatment for treating river water.
BIODEGRADABLE COMPOSITE FOR COSMETIC PATCH
Authors: Ali Fathilah binti , ADLI SARAH AMALINA , Anuar Hazleen , Hasham Rosnani , Azmi Azlin Suhaida
Published: December 2024

Patches has recently emerged and attracting more attention for its versatility in many areas such as cosmetic, pharmaceutical and medical. Patches can either be used to administer selected drug to skin or deliver some beneficial ingredients for cosmetic purposes. With that, as polymer is used as the matrix for patches, the polymer selected must be non-toxic, have adhesive property and non-irritative to the skin. Currently, synthetic polymer had been used as the matrix. However, as time passes, people are more concern with the environment, therefore biopolymer is chosen over synthetic polymer as they are degradable and also safe to use. Nowadays, as consumers are demanding for a more effective product that is not only good for appearance but also the health of the skin, studies had been done on many kinds of active ingredient that will give the best effect to the skin. Thus in this paper, patches made up of different combinations of polymer and active ingredients will be discussed.
MUNICIPAL SOLID WASTE AND PALM KERNEL SHELL MIXTURE AS FEEDSTOCK IN THE GASIFICATION PROCESS
Authors: Diallo Amadou Dioulde Donghol , Alkhatib Ma’an Fahmi Rashid , Alam Zahangir MD , Mel Maiziwan
Published: December 2024

One of the renewable and sustainable energy sources to replace polluting fossil fuels is residues of municipal solids and biomass. The efficient management of this energy will help to solve the problems associated with fossil fuels. There are several routes to convert biomass into useful products depending on the biomass characteristics and the requirement of the end product and its applications. Furthermore, biomass gasification has considered being the preferred viable option for the conversion of a variety of biomass feedstock. This study highlights the possibility of mixing biomass (palm kernel shell) and municipal solid waste (MSW) to make clean energy that regards the environment (climate change) and sustainable development. Chosen components of MSW, specifically plastics, textiles, foam, and cardboard mixed with PKS in desired proportions. Volatiles, ash moisture content, have moderate concentrations that do not negatively influence the gasification process, according to the study results. The study established that the mixture MSW and PKS can be a raw material for the gasification process. According to the calorific value, this is, around 21.13 MJ/kg for an MSW + PKS ratio of 0.25 to 28.82 MJ/kg for an MSW + PKS ratio of 1.5. Other polluting elements were found such as Chlorine (0.064 wt. % to 0.171wt.%), Sulfur 0.321wt.% to 0.512 wt.% respectively. Elements such as antimony (Sb), arsenic (As), bromine (Br), lead (Pb), and mercury (Hg) were not found, in any of the elements analyzed.  Moreover, those who are present are within the standards set by the competent services. Therefore, this mixture of MSW and PKS can replace the polluting and depleting fossil fuel in the gasification process with little to no impact on the environment.
SIMULATION STUDY OF GASIFICATION OF EMPTY FRUIT BUNCH (EFB) FOR ELECTRICITY GENERATION USING SUPERPRO DESIGNER
Authors: Shariffudin Muhammad Syazwan , Abdul Jalal Nurfatin Azma , Mel Maiziwan , Sulaiman Sarina , Sany Izan Ihsan  , Makatar Wae-Hayee
Published: December 2024

Energy generation using non- renewable sources has always been an issue to the environment. To sustain the environment, gasification process using biomass as carbonaceous fuel is urged to reduce the dependency on coal or fossil fuel as the feed to generate energy. This project focused on identifying the best condition for running a gasification process using SuperPro Designer v9.5 software. The software was used to design the power plant by having the required unit operations such as gasification, cyclone separator, cooling, absorption, gas compression and gas expansion in their library. The unit operations were then arranged to build the plant and optimized by using Minitab v14 software to find out the best condition among the selected factors which are the fuel, steam, and oxidant streams into the gasifier for producing high yield of electrical energy. The result demonstrated that the biomass feed stream of two metric tons per hour of empty fruit bunch (EFB), one metric ton per hour of steam feed and zero-point five metric ton of air were enough to generate about 8246 kWh of electricity. Overall, all runs showed a good and approximately equal performance which indicate that the SuperPro designer simulation is reliable for analyzing gasification performance.
ENHANCEMENT OF POWER CONVERSION EFFICIENCY OF DYE-SENSITIZED SOLAR CELLS VIA INCORPORATION OF GAN SEMICONDUCTOR MATERIAL SYNTHESIZED IN HOT-WALL CHEMICAL VAPOR DEPOSITION FURNACE
Authors:   National Laboratory Astana, Nazarbayev University, Astana, Kazakhsta, Toktarbaiuly O.
Published: December 2024

This study discusses the results of plasma enhanced chemical vapor deposition synthesis of GaN on sapphire and silicon substrates using specific parameters: a forward output voltage of 150 watts, a N2gas flow rate of 60 standard cubic centimeters per minute, a chamber pressure of 2.48 mmHg, and a synthesis time of 2hours. Characterization by scanning electron microscope, Raman and energy dispersive X-ray revealed the non-stoichiometric formation of GaN, with Ga clearly predominating in the composition. scanning electron microscope analysis of the substrate surface morphology revealed the presence of small islands, which are considered to be the first step in the chemical vapor deposition process. The research also examinedthe effects of incorporating GaN into the photoanode of dye-sensitized solar cells. The study investigated the optimal amount of GaN powder in the TiO2matrix. The initial experiments used commercial GaN powder to determine the optimal weight percentage. Four different weight percentages (wt%) 10 wt%, 20 wt%, 30wt % and 40 wt% GaN were selected for the study. Among them, the 20 wt% GaN had the highest power conversion efficiency of 0.75%. The fill factor values showed a tendency to decrease as the weight fraction of GaN increased.
ANALYTICAL DESCRIPTION OF THE POTENTIAL OF ELECTROSTATIC MULTIPOLE SYSTEMS BASED ON A CONDUCTING CIRCULAR CYLINDER
Authors:   Aktobe Regional University named after K. Zhubanov, Shugayeva T.Zh.
Published: December 2024

An urgent task of corpuscular optics and scientific instrumentation is the creation of new methods for calculating the physical and instrumental parameters of mass spectrometers. Leveraging the increased capabilities of computational technology, these methods provide a solid basis for the design and calculation of instruments with improved analytical capabilities.In this work, a method was developed for calculating the electrostatic field of multipole systems based on a conducting circular cylinder. This method uses the broad analytical capabilities of the theory of functions of a complex variable. Analytical expressions are found for the electrostatic field potential of a quadrupole system for the case of infinitely narrow gaps between the electrodes. Analytical expressions for the derivatives of the potential are also obtained. A study was carried out of the influence of the finite size of the gaps between the electrodes on the field configuration. For this purpose, numerical simulations of planar electric fields satisfying the Laplace equation were carried out. The calculation of the electrostatic field potential was carried out using the boundary element method in two stages. First, the distribution of electric charge at the boundary was calculated according to the known boundary potential distribution, that is, the “inverse” problem was solved.Then, using the found values of the charge distribution and the found potential values, the “direct” problem was solved. To solve this problem, a method was developed for solving integral equations with singular and quasi-singular kernels, which provides high accuracy in field calculations for electron-optical systems (EOS) with rectilinear boundaries. The inaccuracies in the calculations resulted solely from rounding mistakes. In the case of an Equation of State characterized by curved boundaries, the precision is dependent exclusively on how accurately the boundaries are represented using linear segments. For the purpose of segmenting the curved borders of the second-order EOS, these boundaries were broken down into arcs with an angular measurement not exceeding one degree
Abordagem diagnóstica e terapêutica em enteropatia inflamatória crônica felina
Authors: Sabino Karoline Simião , Assumpção Anderson Eberhardt
Published: December 2024

Chronic Inflammatory Enteropathy in cats is defined by idiopathic chronic gastrointestinal inflammation, with clinical signs of vomiting, weight loss, diarrhea and changes in appetite for more than 3 weeks. The etiopathogenesis is unknown, but it is believed to be related to the intestinal microbiome, environmental and genetic factors and the immune system. Diagnosis involves eliminating other causes with similar gastrointestinal clinical signs through laboratory, fecal, abdominal ultrasound and histopathological examinations. Histopathological examination is performed using intestinal biopsy samples and is the gold standard for diagnosis of this pathology. Differentiating between chronic inflammatory enteropathy and low-grade alimentary lymphoma is a challenge, requiring immunohistochemistry and clonality tests in some cases. Treatment is based on dietary changes, use of antibiotics and immunosuppressants. Complementary therapies such as probiotics, prebiotics, omegas, cobalamin, fecal microbiota transplantation and mesenchymal stem cells are being studied. This paper will review the etiopathogenesis, clinical signs, physical examination, diagnostic methods, treatment and prognosis of chronic inflammatory enteropathy in cats.
Biogeochemical cycling of nickel in the hornbeam forest ecosystems of the Middle Dnipro Region
Authors: Lukashov Dmytro , Tesolkina Tetiana
Published: December 2024

Heavy metals, particularly Ni, are priority pollutants of atmospheric air. Urban green spaces and forest ecosystems play a crucial role in reducing pollution levels. Нowever, they themselves suffer from adverse impacts that induce phytotoxic effects, diminish the resilience of vegetation to pests, diseases, and other negative factors. This study aimed to assess the balance of the biogeochemical cycle of Ni in forest ecosystems to determine the consequences of pollution on vegetation within urbanised environments under varying anthropogenic pressures. Hornbeam forests from two territories of the natural reserve fund of Ukraine were selected as model ecosystems of broad-leaved forests in the Middle Dnipro Region: Holosiivskyi National Nature Park (NNP) and the Kaniv Nature Reserve. The study conducted on these model ecosystems, the methods of atomic absorption spectrophotometry and ICP-OES spectrometry were employed to ascertain the characteristics of Ni accumulation in soils. An evaluation of Ni stocks in the phytomass of hornbeam forests was performed, along with an analysis of the dynamics of metal compound accumulation in the forest litter. Furthermore, Ni’s vertical migration rates were assessed using a lysimetric method, and the levels of metal compounds in the deposition process via atmospheric precipitation onto the hornbeam forests were determined. It has been established that the biogeochemical systems of Ni migration in the hornbeam forest of the Kaniv Nature Reserve are characterised by a balanced metal flow. The ecosystem of the hornbeam forest within the Holosiivskyi NNP exhibits an imbalance in the biogeochemical cycle of Ni. Consequently, in the functioning of the Ni biogeochemical cycle within the ecosystem of the Holosiivskyi NNP, the biological component of the “litter-soil-plant” system plays a crucial role, as Ni is actively absorbed by common hornbeam (Carpinus betulus L.) and accumulates in the phytomass. The ecosystem of the hornbeam forest of the Holosiivskyi NNP in the conditions of Kyiv is undergoing progressive Ni pollution, which is manifested in the active accumulation by vegetation, which must be taken into account when assessing the condition of existing green spaces and when designing new ones, choosing plants that are resistant to high concentrations of Ni
Edaphic aspect in the ecological structure of the dendroflora in the “Nova Sofiyivka” park
Authors: Porokhniava Olha , Rumiankov Yurii , Kopylova Tetiana , Vegera Liudmyla , Ponomarenko Valentyna
Published: December 2024

The conflict between the needs of plants and the ecological characteristics of edaphotope directly affects the aesthetics of the landscape. In this connection, the compliance of the needs of woody plants with edaphic conditions was investigated. The purpose of the study was to determine the edaphic component of the ecological structure of the dendroflora of “Nova Sofiyivka” park to predict the potential viability of plant communities. The paper used descriptive, statistical, and comparative research methods. The description of the park’s dendroflora was made according to the instructions for the inventory of green spaces in localities of Ukraine. The species composition was determined using plant identification guides, and the relevance of species names was verified according to the current international classification. Ecological analysis of dendroflora was performed based on ecological scales, in which plants were divided into 7 ecological groups depending on the soil moisture regime, moisture variability, aeration, acidity, total salt regime, carbonates and nitrogen content. In the dendrology of the park, mesophytes predominate in terms of sensitivity to the soil moisture regime, hemihydrocontrastophobes predominate in terms of variability, hemiaerophobes predominate in terms of air regime, neutrophils predominate in terms of acidity, mesotrophs predominate in terms of salt regime, acarbonatophiles predominate in terms of carbonates content, and nitrophiles predominate in terms of nitrogen content. The survey revealed a rational solution to the problem of providing appropriate soil moisture conditions for plants belonging to the eco-groups of hydrocontrastophobes, hygromesophytes, and hygrophytes. To meet the needs of eco-groups of subacidophiles and acidophiles in low soil acidity, the root-containing soil layer was replaced with a peat mixture with the appropriate pH before planting. The practical significance of the results obtained lies in the possibility of their use by gardening specialists to optimise plantings, considering edaphic conditions that affect the increase in plant resistance and reduce the intensity of plant care. Plants for which planting sites are selected based on their environmental needs are more vital and durable
An Accuracy Study of Contact and Non-Contact Clinical Thermometers at Songklanagarind Hospital, Thailand
Authors: Samae Mahdee , Kaewkhanitarak Hanapong , Leeudomwong Theera , Sanponpute Tassanai
Published: December 2024

Objective: This study aimed to assess and validate the accuracy of contact clinical thermometers (CCTs), clinical digital thermometers (CDTs), temperature probes, and non-contact clinical infrared thermometers (NCCITs), which are commonly used at Songklanagarind Hospital.Material and Methods: The Medical Equipment and Maintenance Centre (MEMC) at Songklanagarind Hospital collected a total of 187 clinical thermometers, from various departments. This collection comprised of 45 temperature probes, 112 CDTs, and 30 infrared thermometers. All these thermometers underwent calibration at three distinct temperature points, via comparison with the secondary reference temperature standard (Pt100, SIKA). To assess the accuracy of the collected thermometers, an evaluation of the associated error and uncertainty was conducted. The maximum permissible errors (MPEs) were precisely defined as: ±0.2 °C and ±0.3 °C for CCT and ±0.5 °C for NCCIT.Results: The results revealed that all temperature probes, which represent 100% of the sample, demonstrated an average acceptable accuracy; determined by the average of the percentage of acceptable accuracy across three temperature calibration points, within the Maximum Permissible Error (MPE) range of ±0.2 °C. However, only 14% of the CDTs showed an average acceptable accuracy within the MPE of ±0.2 °C. Meanwhile, 51% of the CDTs met the MPE of ±0.3 °C. Additionally, 90% of the NCCIT demonstrated superior acceptable accuracy compared to the MPE of ±0.5 °C.Conclusion: This research emphasizes the significance of assessing the reliability and accuracy of clinical thermometers through calibration techniques; especially during the ongoing COVID-19 pandemic, which demands large-scale illness screening.
Природоохоронні інституції Вінниччини другої половини 1940-х – початку 1970-х років
Authors: Маліновська Анна
Published: December 2024

The purpose of the article is to consider the issues of nature protection in Vinnytsia region in the second half of the 1940s and early 1970s. It is shown that during this period, the solution to this problem was seen as the identification of certain valuable natural objects, their withdrawal from the sphere of economic use and complete protection. The research methodology is based on the principle of objectivity and historicism, a systematic approach to the study of historical, environmental and socio-economic phenomena in their development and interrelationships. The use of methods of analysis and synthesis, problematic and thematic, descriptive and historical and chronological approaches allowed the research to optimally solve the research objectives. The scientific novelty lies in the systematic use of a comparative analysis of the work of environmental institutions in Ukraine in general and in Vinnytsia region in particular. Conclusions. It has been established that nature protection was not a priority area of state policy in the USSR, but later the first environmental protection measures began to be implemented. In the 1960s, protected areas and nature reserves began to appear in the Vinnytsia region, and programmes were developed to protect water and soil. However, the impact of these measures was limited due to insufficient funding, lack of a systematic approach, and lack of environmental education.
Застосування QR-кодів, як інструменту залучення учнів до процесу навчання математики в базовій середній школі
Authors: Волянська Олена , Іванько В.
Published: December 2024

The concept of QR code is considered, the advantages of their use in education are indicated, and examples of their use in mathematics education are given. A QR code (Quick Response Code) is a two-dimensional barcode that can contain any information, such as a link to a website, video, presentation, or interactive exercise. The article deals with the use of QR codes as a tool for engaging students in the process of learning mathematics in basic secondary school. The question was considered: How can QR codes be used to increase motivation for learning mathematics? What types of digital resources can be used with QR codes in mathematics education? What interactive learning materials can be created using QR codes? The theoretical basis of their use was considered and own methods of using QR codes in teaching mathematics were developed. The literature presents a number of studies that analyze the experience of using QR codes in teaching mathematics in other countries, these studies show their effectiveness for teaching mathematics. It was concluded that the use of QR codes helps to make mathematics lessons more interesting, conduct quests, use various games, quizzes, conduct surveys and test knowledge through testing, use interesting educational videos for a better understanding of what was learned in the lesson. The use of QR codes activates the educational and cognitive activities of students of all ages, increases motivation and interest in mathematics, improves the educational process, helps teach and educate the new generation in the modern information environment.