bluuebunny/crossref_metadata_2025_split huggingface dataset:
The comparison of the chest excursion indicators of the students of higher educational institutions
Authors: Karatieieva S.Yu. , Slobodian O.M. , Penishkevych Ya.I. 
Published: March 2023

Purpose: to conduct a comparative analysis of the indicators of chest excursion in students during their studies in higher educational institutions of Bukovyna.
Results. The research was conducted on 126 students of I - II courses of higher educational institutions of Chernivtsi, aged from 16 to 18 years, where 86 (68.25%) were boys and 40 (31.75%) were girls (the main group consisted of 86 (68.25%) students who, in addition to physical activity included in the program of their specialty, additionally engaged in the following sports: football - 42 (48.83%), volleyball - 19 (22.09%), basketball - 13 ( 15.11 %) and handball - 12 (13.96 %), the control group consisted of 40 (31.75 %) students who did not play sports. All students were subjected to an anthropometric study (chest circumference) according to the method of V.V. Bunaka modified by P.P. Shaparenka. The analysis of the breast excursion in the students of the main group showed a significantly higher number with a high level of breast excursion - 27 (31.40%), in contrast to the students of the control group, where there were only 5 (12.5%) with a high level of breast mobility. Conversely, a low level of excursion was noted among students of the main group - 6 (6.98%), while in the control group this indicator was - 8 (20%) of the subjects.
Conclusions. Among the students of the main group, there is a much larger number with a high level of chest excursion - 27 (31.40%), in contrast to the students of the control group - 5 (12.5%). Among the subjects with a high level of chest excursion, the largest number was found in football and volleyball players, slightly less in basketball players, and the smallest in handball players. The index of chest excursion can be taken into account during sports selection and when directing an athlete to a specific type of sport.
Determination of fighting styles of qualified athletes in modern martial arts based on multidimensional analysis of biomechanical and psychophysiological indicators
Authors: Kozin V.Y. , Bielievtsov M. , Pustomelnyk O. , Kozina Z.L. 
Published: March 2023

The purpose of the study is to reveal the fighting styles of combat sambo athletes based on a multidimensional analysis of psychophysiological and biomechanical indicators.
Material and methods. 42 qualified combat sambo athletes (age 20-25) took part in the study. The biomechanical analysis of the speed of movement of various points and the value of the angles in the joints during a direct impact was used as a research method. Biomechanical analysis of the technique of a direct blow in combat sambo athletes was carried out using the "Kinovea" program, version 0.8.15. The speed of movement of the fist, shoulder joint, elbow joint, and knee joint was determined. The angles between the shoulder and torso (angle in the shoulder joint), between the shoulder and forearm (angle in the elbow joint), and between the thigh and lower leg (angle in the knee joint) were also determined.
Results. 3 clusters (groups) of combat sambo athletes have been identified, which differ in their psychophysiological and biomechanical indicators. The clusters were named as follows: Cluster 1 - "Speed ​​and coordination endurance", corresponds to athletes with a tempo style of fighting; Cluster 2 - "Speed", corresponds to the sportsmen's game style of fighting; Cluster 3 - "Strength and speed", corresponds to athletes with a tempo style of fighting.
Conclusions. The results of this study should be used when planning the individual training of combat sambo athletes and to determine the optimal style of conducting a competitive match for qualified athletes.
Individual factor structure of biomechanical and psychophysiological indicators as a basis for determining the fighting style of qualified mixed martial arts (MMA) fighters
Authors: Kozin V.Y. , Pustomelnik O. , Bielievtsov M. , Kozina Zh.L. 
Published: March 2023

The purpose of the study to reveal the fighting style of qualified MMA fighters based on the individual factor structure of psychophysiological and biomechanical indicators.
Material and methods. 42 qualified combat sambo athletes (age 20-25) took part in the study. The biomechanical analysis of the speed of movement of various points and the value of the angles in the joints during a direct impact was used as a research method. Biomechanical analysis of the technique of a direct blow in combat sambo athletes was carried out using the "Kinovea" program, version 0.8.15. A psychophysiological method of determining the time of a simple and complex reaction was used in standard conditions and in different testing modes. Using the computer program "Psychodiagnostics".
Results. In the structure of the complex training of qualified MMA fighters, 2 main factors are highlighted. The first factor (55.063% of the total total variance) according to the indicators included in it was named "Speed". The second factor (44.937% of the total total variance) according to the indicators included in it, was named "Speed ​​Endurance". The fighting styles of qualified MMA fighters were identified based on the analysis of the general and individual factor structure of biomechanical and psychophysiological indicators. It is shown that the individual factor structure, which is characterized by the expressiveness of the "Speed ​​and coordination endurance" factor by more than 80%, and the expressiveness of the "Speed" factor by less than 30%, is characteristic of tempo style fighters.
Conclusions. We found 3 groups of athletes, which are characterized by the following manifestations of psychophysiological functions in combination with biomechanical indicators: group 1 - endurance for high-speed and coordination actions; group 2 – speed at short time intervals; group 3 - power (a combination of speed and strength) with a predominance of strength. Determining fighting styles in modern MMA is one of the main steps to improving an athlete and winning.
Sport as a factor in the improvement of the stability of the nervous system to the exhaustion and expansion of students' orthostatic reactions
Authors: Kozina Zh.L. , Garmash I.A. , Berezhnaya Ya.L. 
Published: March 2023

Purpose: to reveal the influence of sports on indicators of psychophysiological functions and orthostatic reactions of students of various faculties of pedagogical universities.
Material and methods. 812 students of pedagogical institutions of higher education of Ukraine took part in the study: 88 students of the faculty of elementary education, 76 students of history, 130 of natural sciences, 131 of foreign philology, 93 of the faculty of preschool education, 198 of Ukrainian language, 25 of the faculty of physical education and sports, 24 students from the Faculty of Arts, 47 students from the Faculty of Psychology and Sociology. Psychophysiological testing was carried out according to the Psychodiagnostics program and involved determining the speed of a simple visual-motor reaction, determining the speed of a choice of two elements out of three. During psychophysiological testing, the reaction time and the number of errors were determined for each test.
The results. Sports have a positive effect on the indicators of the strength of nervous processes according to the results of the number of errors in the test for the reaction to the choice of two elements out of three (p<0.05). Also, playing sports has a positive effect on the quality of autonomic regulation of vascular tone, which is reflected in lower values ​​of the heart rate during the transition from a horizontal position of the body to a vertical one in students who play sports (p<0.05).
Conclusions. Sports are recommended for students of all faculties of pedagogical universities. The type of sport should correspond to the individual inclinations of the student and his professional direction.
Construction of the football training process in the annual cycle in female student football teams
Authors: Kozina Zh.L. , Siryi O.V. , Buchkalo D.O. , Polishchuk S.B. , Chupryna O.I. , Niedialkov Ya. 
Published: March 2023

The purpose of the study is to substantiate the structure and content of the physical training of highly qualified female soccer players during the annual training cycle.
Material and methods. The following research methods were used to solve the tasks: analysis of scientific and methodological and special literature, regulatory documents; pedagogical research methods (pedagogical observation, pedagogical testing, pedagogical experiment); methods of mathematical statistics.
The results. The level of aerobic endurance is determined by the results of the 2000 m run. The obtained data indicate an increase in the test indicators from 499.3 ± 8.24 s at the beginning of the study to 484.7 ± 7.01 s after the basic stabilizing mesocycle, which was 2.9%, but already in the first competitive period, compared to the previous ones , the results of this test deteriorated by 1.0%. In the second competitive period, the test execution speed deteriorated by 2.3%, and the overall average result became even worse than the initial one.
The predominant influence of the development of certain physical qualities on the quantitative and qualitative indicators of the performance of technical and tactical techniques by football players was determined. The number of shots on goal depends on the level of general endurance (r = 0.59), the quality of stopping is dependent on speed and strength qualities (r = -0.53), and the intensity coefficient depends on the level of special (speed) endurance (r = 0.65). There is a very weak or weak statistically reliable relationship between other indicators of competitive activity and physical fitness of qualified soccer players (r = 0.10-0.43).
Conclusions. Based on the determination of the dynamics of physical qualities during the annual training cycle and the analysis of the relationship between indicators of physical fitness and competitive activity, it was recommended to the team coach to plan physical training taking into account the playing role of female athletes and correct training programs with an increase in the time allocated to physical training in the competitive period
AVALIAÇÃO DE FUNGOS PARA A DEGRADAÇÃO DE CELULOSE PARA PRODUÇÃO DE ETANOL LIGNOCELULÓSICO
Authors: Andrade David Dias de , Silva Gervasio Paulo da 
Published: March 2023

O objetivo deste trabalho foi avaliar o potencial celulolítico de fungos visando a degradação de resíduos lignocelulósicos para a produção de etanol. O potencial celulolítico de 18 cepas fúngicas foi determinado a partir do teste do corante vermelho congo 2,5%, em meio carboximetilcelulose (CMC). Cofermentação do resíduo do caule do mamoeiro empregando o fungo Aspergillus niger e a levedura Saccharomyces cerevisiae comercial foi conduzida por 21 dias a temperatura ambiente. A hidrólise química do caule de mamoeiro com ácido sulfúrico (H2SO4) 0,3% ou ácido clorídrico (HCL) 0,3%, seguida de fermentação pelo isolado Trichoderma sp. ITI07 e Saccharomyces cerevisiae foi avaliada. Os produtos da fermentação foram determinados em HPLC. Doze cepas apresentaram atividade enzimática, dois fungos apresentaram maior potencial para produção de celulases, Trichoderma sp. ITI07 e Rhizopus sp. ITI11. Na cofermentação do caule do mamoeiro com o fungo Aspergillus niger e a levedura Saccharomyces cerevisiae, o pico de produção de etanol ocorreu com 120 h, com produção de 1,6 g de etanol/L. Nas fermentações utilizando caule de mamoeiro quimicamente tratado com hidrólise ácida, seguido de sacarificação e fermentação simultânea do resíduo do caule do mamoeiro com Trichoderma sp. ITI07 e a S. cerevisiae, foi produzido 1,87 de etanol/L quando o substrato foi hidrolisado com ácido clorídrico e 1,667 g/L com ácido sulfúrico. Dentre dezoito isolados avaliados para o potencial de produção de celulases, doze produzem celulases e as cepas, Trichoderma sp. ITI07 e Rhizopus sp. ITI11 apresentaram os melhores índices enzimáticos. O caule do mamoeiro é um substrato viável para a produção do etanol lignocelulósico, contudo, mais pesquisas devem ser desenvolvidas visando encontrar as condições que levam a maior eficiência no pré-tratamento da biomassa.
LÍQUIDO EXTRAÍDO DA MANDIOCA: MANIPUEIRA, PRECIOSIDADE NAS COMUNIDADES QUILOMBOLAS NO MUNICÍPIO DE MARAGOGIPE, BAHIA
Authors: Conceição Beatriz Souza da , Carqueija Luiz Guilherme de Souza , Rangel Milena da Conceição , Pinto Zeisla Neres , Pinto Flavia da Conceição 
Published: March 2023

O resumo apresenta um relato de experiência de discentes do curso técnico em agropecuária do Centro Estadual de Educação Profissional Vale do Paraguaçu Comunidade Quilombola (CEEP VP). O projeto iniciou em fevereiro de 2022, com a pretensão de finalizar em maio de 2022. Objetivou-se, neste trabalho, verificar o uso da manipueira, subproduto obtido a partir da mandioca, durante a produção de farinha nas Comunidades Quilombolas, localizadas no município de Maragogipe Bahia. O referido estudo está sendo desenvolvido nas Comunidades Quilombolas Guaruçú, Guaí, Tabatinga e Departamento de Tecnologia Social (Casa de Farinha) do CEEP VP. Iniciou o estudo com revisão bibliográfica, visitas e registros fotográficos. Estas comunidades são formadas principalmente por pequenos produtores de mandioca, que têm na farinha um dos principais meios de renda. O projeto foi dividido em cinco etapas, que consiste em revisão bibliográfica, visitas as comunidades, registro fotográfico, criação e distribuição de uma cartilha, realização de uma roda de conversa com os agricultores, apresentando as principais alternativas para o destino ecológico da manipueira, entre elas a fabricação de vinagre, sabão e adubo orgânico.
LIXO ELETRÔNICO: IMPACTOS CAUSADOS NO MEIO AMBIENTE PELO DESCARTE INDEVIDO DE PILHAS ELETRÔNICAS NO MUNICÍPIO DE MARAGOGIPE, BAHIA, BRASIL
Authors: Santos Eliene Santana , Santos Daura Moreira dos , Laranjeira Diene Batista Santos 
Published: March 2023

As pilhas são compostas de metais pesados e tóxicos, quando jogados incorretamente em lixões e aterros comuns, podem contaminar o solo e os lençóis freáticos. O presente projeto foi realizado com uma turma do 3º ano do ensino médio em administração, no Centro Estadual de Educação Profissional Vale do Paraguaçu Comunidade Quilombola município de Maragogipe Bahia e teve como um dos principais objetivos analisar os impactos ambientais das pilhas eletrônicas descartadas incorretamente na cidade de Maragogipe - BA. O estudo iniciou com a sequência didática elaborada e aplicada, propondo uma discussão em cima do problema: Lixo eletrônico, descarte indevido. Metodologia utilizada: discussão sobre o problema, pesquisa bibliográfica, registro fotográfico, mapeamento dos locais inadequados e adequados de descarte para às pilhas eletrônicas. A primeira atividade foi feita em sala de aula, a partir de uma discussão em cima do problema, no segundo momento foi orientado a realização da pesquisa bibliográfica, e no terceiro momento o registro fotográfico e mapeamento dos locais inadequados que são feitos os descartes e os locais adequados para o descarte correto. O estudo está em fase de desenvolvimento com o planejamento do mapeamento dos locais incorretos e corretos do descarte das pilhas eletrônicas. Nas atividades iniciais foi possível observar e registrar que a maioria da população não tem conhecimento sobre os impactos ambientais causados pelo despejo inadequado do lixo eletrônico, diante da problemática ambiental se faz necessário promover a conscientização da população, por meio de palestras nas escolas, rodas de conversa e atos de panfletagem, mostrando o tratamento adequado para esse tipo de lixo.
COSMÉTICOS ARTESANAIS, NATURAIS E ECOLÓGICOS A BASE DE MEL E GEOPRÓPOLIS DE ABELHAS SEM FERRÃO
Authors: Sauthier Maria Celeste da S. , Dantas Marília , Sousa Nathalie Araújo 
Published: March 2023

O projeto propôs o desenvolvimento de cosméticos naturais produzidos manualmente com à base de mel e geopropólis de abelhas sem ferrão, e outros materiais conhecidos pelas comunidades tradicionais como ervas, sementes e óleos naturais, desenvolvendo materiais de higiene como sabonetes, shampoos e cremes. A proposta é que esses materiais possam ser desenvolvidos com segurança e com poucos recursos, empregando como matéria prima o mel de abelhas de ferrão e outros insumos já conhecidos pelas comunidades tradicionais como ervas, sementes e óleos naturais, tendo o cuidado de seguir os princípios da Química verde e dando preferência a materiais ecologicamente adequados em todas as etapas da fabricação. Essas abelhas têm importância ambiental amplamente reconhecida, principalmente, pelo serviço indispensável que prestam com a polinização, na manutenção dos ecossistemas naturais e agrícolas, e consequentemente, na produção de alimentos. Apesar disso, vem sendo dizimadas pelo emprego de agrotóxicos nas monoculturas e destruição dos seus habitats naturais, entre outros fatores. O mel e demais produtos relacionados são utilizados desde remotas épocas por comunidades primitivas como alimento e remédio, por suas propriedades nutritivas e funcionais. Na primeira fase, foi pesquisado o que já foi publicado em termos de cosméticos à base de mel de abelha sem ferrão para fundamentar a elaboração de um produto seguro e inovador. Essa pesquisa contemplou também o saber tradicional de comunidades ancestrais, que utilizam o mel, além das pequenas propriedades que vivem da agricultura familiar e empregam a agroecologia também na produção do mel. Na segunda fase, foram definidas as metodologias de elaboração dos cosméticos, que foi realizada em domicílio e eventualmente em laboratórios do IF Baiano, Campus Governador Mangabeira. Na terceira fase, foi elaborada uma cartilha, além da conta no Instagram, onde é realizado a sensibilização sobre a preservação das abelhas sem ferrão, assim como a valorização dos saberes tradicionais e ecológicos na produção artesanal e na bioeconomia, que pode substituir com muitas vantagens o consumo desenfreado de substâncias sintéticas, como os derivados de petróleo, muito usados em cosméticos.
Using ChatGPT to produce code for a typical college‐level assignment
Authors: Wollowski Michael 
Published: March 2023

AbstractIn this article, I record experiments with ChatGPT to write code for AVL trees, a standard and reasonable sized assignment typically found during the second year in a CS curriculum. I show that it is cumbersome to elicit code that satisfies standard style guidelines. I conclude that a good textbook may be a more efficient way to develop code.
Fractal Microelectrodes for More Energy‐Efficient Cervical Vagus Nerve Stimulation
Authors: Lim Jongcheon , Eiber Calvin D. , Sun Anina , Maples Amanda , Powley Terry L. , Ward Matthew P. , Lee Hyowon 
Published: March 2023

AbstractVagus nerve stimulation (VNS) has the potential to treat various peripheral dysfunctions, but the traditional cuff electrodes for VNS are susceptible to off‐target effects. Microelectrodes may enable highly selective VNS that can mitigate off‐target effects, but they suffer from the increased impedance. Recent studies on microelectrodes with non‐Euclidean geometries have reported higher energy efficiency in neural stimulation applications. These previous studies use electrodes with mm/cm‐scale dimensions, mostly targeted for myelinated fibers. This study evaluates fractal microelectrodes for VNS in a rodent model (N = 3). A thin‐film device with fractal and circle microelectrodes is fabricated to compare their neural stimulation performance on the same radial coordinate of the nerve. The results show that fractal microelectrodes can activate C‐fibers with up to 52% less energy (p = 0.012) compared to circle microelectrodes. To the best of the knowledge, this work is the first to demonstrate a geometric advantage of fractal microelectrodes for VNS in vivo.
Highly Sensitive and Omnidirectionally Stretchable Bioelectrode Arrays for In Vivo Neural Interfacing
Authors: Zhao Qinyi , Zhu Ming , Tian Gongwei , Liang Cuiyuan , Liu Zhiyuan , Huang Jianping , Yu Qianheng Yuan , Tang Shuanglong , Chen Jianhui , Zhao Xizheng , Zeng Qi , Guo Chongshen , Qi Dianpeng 
Published: March 2023

AbstractFlexible electrode array, a new‐generation neural microelectrode, is a crucial tool for information exchange between living tissues and external electronics. Till date, advances in flexible neural microelectrodes are limited because of their high impedance and poor mechanical consistency at tissue interfaces. Herein, a highly sensitive and omnidirectionally stretchable polymeric electrode array (PEA) is introduced. Micropyramid–nanowire composite structures are constructed to increase the effective surface area of PEA, achieving an exponential reduction in impedance compared with gold (Au) and flat polypyrrole electrodes. Moreover, for the first time, a suspended umbrella structure to enable PEA with omnidirectional stretchability of up to ≈20% is designed. The PEA can withstand 1000 cycles of mechanical loads without decrease in performance. As a proof of concept, PEA is conformally attached to a rat heart and tibialis anterior muscle, and electrophysiological signals (electrocardiogram and electromyogram) of the rat are successfully recorded. This strategy provides a new perspective toward highly sensitive and omnidirectionally stretchable PEA that can facilitate the practical application of neural electrodes.
Giant Humidity Effect of 2D Perovskite on Paper Substrate: Optoelectronic Performance and Mechanical Flexibility
Authors: Wang He , Zhang Xi , Ma Yali , Wang Mengke , Wang Jun 
Published: March 2023

AbstractFlexible optoelectronic devices have attracted enormous attention as an essential component in next‐generation wearable devices. To meet the trend of biocompatibility, flexibility and low cost, paper‐based optoelectronic devices have become compelling candidates. Moreover, 2D organic–inorganic metal halide perovskites have been extensively studied for the application in flexible optoelectronic devices owing to their long‐term moisture stability, optoelectronic tunability, and multiple quantum well (MQW) structures. Herein, the paper‐based flexible optoelectronic devices are designed by spin‐coating PEDOT:PSS and (iso‐BA)2MAn‐1PbnI3n+1 (n ≥ 1) on regular filter paper with responsivity of 2.62 mA W−1 and response time (τrise/τdecay) of 0.81/0.18 s at 35% relative humidity (RH). Furthermore, the responsivity may be increased by 250% within the humidity range from 35% to 90%, and remains above 92% of the initial value after measured for 1800 s at 60% RH. This work can pave the way for further studies about the humidity effect on perovskites for next‐generation green wearable electronics.