bluuebunny/crossref_metadata_2025_split huggingface dataset:
Determining patterns in the generation of magnetic fields when using different contact welding techniques
Authors: Levchenko Oleg , Polukarov Yury , Goncharova Olga , Bezushko Olga , Arlamov Olexandr , Zemlyanska Olena 
Published: January 2023

The object of this study is the quantitative characteristics of magnetic fields induced during electric contact welding in various ways: contact point, arc-butt, capacitor point, contact-butt continuous, and pulsating fusion. The problem to be solved is the lack of necessary information regarding the electromagnetic safety of these welding techniques. A description of the proposed methodological approaches to determining the levels of magnetic fields, their measurement tools, and methods for assessing their impact on the welder's body is given. Based on the analysis and processing of the acquired oscillograms and spectrograms of magnetic fields, their quantitative characteristics were measured. To determine the general level of the polyfrequency magnetic field arising at contact welding, the proposed generalized indicator of the level of the magnetic field was used. It was established that during contact point welding by a stationary machine, the level of the magnetic field exceeds the maximum permissible value at the workplace in the range of 50–1000 Hz at a distance of 0.3 m from the welding electrodes. When manually welding in this way, the magnetic field level exceeds the permissible level in the frequency bands of 5–50, 50–1000 Hz directly near the electrical cable. Capacitor spot welding with direct current is characterized by exceeding the maximum permissible MP at the workplace in the high-frequency range of 1000–10000 Hz. During arc-butt welding, no excess of the maximum permissible levels of the magnetic field was detected at the workplace. It is shown that the spectral composition and magnitude of the magnetic field signal is determined by the welding technique and the initial parameters of power supplies. Orimani results can be used in the field of welding production and labor protection.
Identifying the influence of number of blades and distance between blades on tesla pump characteristics
Authors: Wahhab Kadhim Mohammed , Hayawi Rahman Mokdad 
Published: January 2023

The main principle of the Tesla pump is to increase the shear stresses as a result of the rotation of the pump blades, and thus increase the kinetic energy of the fluid to form a mass flow. The types of mechanical pumps are many and the ways of their use are wide. Over the years, scientists have contributed to developing types of pumps to get the best pump efficiency. The rotational energy can be converted into a mass flow of the fluid that can be pumped. As the Tesla pump is one of the types that gives a wide impression of fluid mechanics, where the viscosity and shear stress of the fluid will be in the movement of the fluid particles and the formation of a centrifugal force that gives an active flow of the fluid. Tesla pump is one of the primitive pumps that can be modified to study this research paper and know the number of fins used and the optimal distance between them to obtain the best mechanical efficiency of the pump. Where the Tesla pump was designed with variable fins, 3, 6 and 11 fins were taken to compare them, and the distance between the fins was reduced from 10 mm to 5 mm with a change of 2.5 mm, where the changes that occur on the pump can be observed. Where the results proved that the value of the fins increases the flow velocity of the fluid, as the best case was at the fins number 11, where the flow velocity reached 13 m/s. As for the change of distance, it is an inverse relationship as the small distance between the fins impedes the movement of the fluid flow and thus reduces the value of the flow. In the case where the number of turbine blades is 11, shear stresses reached 401 Pa. Which is the best case compared to the rest of the cases. The mechanical movement of the water was significantly increased
Study of pathological changes in placentas of gestational diabetes mellitus and its association with fetal outcome
Authors: Rani A. Swarupa , Jacintha B. Nissy , Khatoon Khuteja , Harechandana M. , Mamatha Manchikanti 
Published: January 2023

GDM is associated with an adverse fetal and neonatal outcome that often presents with macrosomia, birth trauma, neonatal hypoglycemia, and respiratory distress syndrome. The inclusion of GDM into 'the great obstetrical syndromes' emphasizes the role of the placenta in interactions between the maternal and fetal unit.
The aim: To study pathological changes in the placentas of gestational diabetes mellitus and its association with fetal outcome.
Materials and methods: The Prospective study was conducted among pregnant women above the age of 18 years diagnosed with gestational diabetes attending the hospital. All patients are subjected to complete physical examination along with obstetric examination. All the routine investigations, including the complete blood counts, blood picture, RBS, RFT, LFT, OGTT, CUE and, ultrasonography with doppler, histopathological examination of the placenta after delivery.
Results: The weight of the babies born to GDM mothers and normal mothers were compared, and the GDM mother's baby weighed higher, meaning diabetes has an effect on the baby's weight which was statistically significant. Comparison of the placenta was made for cases and controls; the result suggested all the morphological parameters placenta - weight (p<0.001), diameter (p<0.001), area (p<0.002) and thickness (p<0.001) were statistically significant. The complications reported were respiratory complications, hypoglycemia, hyperbilirubinemia, meconium staining, polycythemia, sepsis and hypocalcemia. Babies of gestational diabetic mothers have a higher risk of developing neonatal complications than non-diabetic mothers. Villous oedema, villous fibrosis, syncytial knots, and fibrinoid necrosis is seen on histopathological examination was <0.05, and hence there was a significant difference between these findings in both the groups.
Conclusions: GDM is associated with the adverse fetal and neonatal outcome that often presents with respiratory complications, hypoglycemia, hyperbilirubinemia, meconium staining, polycythemia, sepsis and hypocalcemia. Including GDM into 'the great obstetrical syndromes' emphasizes the role of the placenta in interactions between the maternal and fetal unit
Prevalence of feline cardiomyopathy phenotypes and arterial thromboembolism
Authors: Petrushko Anastasiia , Grushanska Nataliia 
Published: January 2023

The aim: To investigate the prevalence of cardiomyopathy (CMP) phenotypes and the weight of cardiogenic arterial thromboembolism (ATE) as a complication in cats. To determine the influence of age, breed and sex on the frequency of detection of CMP and ATE. Animals: One hundred and seventeen cats with various phenotypes of cardiomyopathies.
Materials and methods: the database of the veterinary center was analyzed. From 1066 studied cats, 117 stories of animal diseases were selected, in which the diagnosis of cardiomyopathy was established.
Results: In the experimental group, the prevalence of CMP was 11 % (HCMP - 94 %; DCMP - 3.4 %; RCMP - 2.6 %). Males were affected more often and had a more severe course. As the age of the animals increased, the relative frequency of heart failure increased slightly, but CMP was diagnosed more often in young animals. The Scottish Straight, Scottish Fold, European Shorthaired, European Longhaired, British Longhaired, and Canadian Sphynx can be considered susceptible breeds in Vinnytsia. There have been no cases of cardiomyopathy in Maine Coons. 57 % of cats with HCMP phenotype were asymptomatic. Arterial thromboembolism occurred in 14.5 % of animals with various CMP phenotypes. The lethality of ATE before discharge was 17.6 %, euthanized (different time period after the incident) 29 %.
Conclusion: HCMP phenotype is the most common. Probably, genetic factors related to sex and breed have a significant influence on the development of cardiomyopathy. More often, CMP phenotypes were diagnosed in younger animals. Heart failure develops more often in older animals. The number of animals with ATE and HCMP phenotype is high, but relative to the number of animals with heart failure, cats with DCMP were more prone. ATE occurred more often in females. Thromboembolism is more common in the European Longhair breed.
Self-development of a studen t— a future doctor in the educational environment of a medical university
Authors: Chumakov V. I. , Chumakov I. V. 
Published: January 2023

Aim. The article is devoted to the analysis of the experience of developing and testing the system of acmeological training of medical university students based on the Young Teacher School technology. The aim was to generalize the pedagogical experience of the teacher curator of the School of Mastery and the Young Teacher School of the Medical University, to reveal the strategy and methods of self-development of students in the educational environment of a medical university.Material and methods. The use of methods of theoretical analysis and evaluation of information obtained in the process of studying scientific and methodological literature, comparison, grouping of data, generalization made it possible to substantiate the acmeological foundations of the Young Teacher School and the School of Mastery as an element of personalized learning for 1-5-year students of a medical university. The study involved 239 respondents — full-time and part-time students.Results. The presented educational system, based on the acmeological model of student self-development, integrates the characteristics inherent in personalized learning: self-motivation, dual desirability of the lesson, self-knowledge and self-prediction. Expert assessment (professors and associate professors of Volgograd State Medical University), and self-assessment of the results of pedagogical experience, interpretation of the data obtained in the process of questioning students, indicate that the developed system has been successfully tested.Conclusion. We developed a personalized acmeological approach to teaching medical students pedagogy, as well as teaching students of the "social work" direction disciplines, in which the individual trajectory of mastering professional and pedagogical competencies is determined by the formation of the student’s subject position, the organization of the educational process as an acmeological personalized pedagogical technology, which can be considered as an innovative pedagogical approach in medical school.
Knowledge towards Thalassemia and Willingness to Screen among Students in Public Senior High School 3 Bandung
Authors: Triatin Rima Destya , Rakhmilia Lulu Eva , Sribudiani Yunia , Susanah Susi 
Published: January 2023

Background: Thalassemia carrier screening is a major preventive measure potentially influenced by the level of knowledge, particularly in adolescents. Therefore, this study aimed to analyze the effect of health education on knowledge of thalassemia in adolescents and its association with their willingness to do thalassemia screening.Methods: A cross-sectional study was conducted using data regarding knowledge of thalassemia before and after health education sessions from 229 students at Public Senior High-School 3 Bandung. All participants attended a one-day health education in July 2019. A questionnaire was filled in to measure their knowledge regarding thalassemia before and after the session, including knowledge on etiology and definition, risk of disease, clinical manifestations, treatment, complication, prognosis, and disease prevention. Only data with complete questionnaire responses were included. These responses were scored quantitatively and analyzed for their association with participants’ willingness to screen. Results: Participants were knowledgeable concerning thalassemia before the health education session (median, range: 60.0, 25.0-90.0), and knowledge was increased significantly after the education session (median, range: 80.0, 35.0-100.0) with an increased median difference=19.99 (p-value <0.001). Although there was no significant association between the overall post-test score on participants’ willingness to screen (p-value >0.05), the willingness was slightly associated with improved knowledge regarding the risk of disease (OR: 1.02; 95%CI: 1.00-1.03; p-value <0.005). Conclusion: Health education regarding thalassemia significantly increases general knowledge of thalassemia. However, improving knowledge is not significant in influencing adolescents’ motivation to take the screening tests.
The severity of mental health problems in healthcare professionals and its associated risk factors during COVID-19 pandemic
Authors: Getachew Melaku , Tadesse Habtamu , Degefu Natanim 
Published: January 2023

Objective: This study assesses the severity of mental health problems in healthcare professionals (HCPs) and its associated risk factors during COVID-19 pandemic at a tertiary hospital in Harar, Eastern Ethiopia.
Methods: An institutional-based cross-sectional study was done from November 01 to 15, 2020. Data was collected by using a web-based self-administered questionnaire. Descriptive statistical analysis, cross tabs, and logistic regressions were utilized.
Results: Out of 238 HCPs, 54.6% of them had a mental health problem. The prevalence of depression, anxiety, and stress was 44.1%, 48.3%, and 29.0%, respectively. Cigarette smoking was the only factor associated with depression. Being female, a cigarette smoker, and previously diagnosed with COVID-19 were associated with anxiety, while cigarette smoking and previous COVID-19 suspect had a significant association with stress.
Conclusion: The burden of mental health problems among HCPs is high. The Federal Ministry of Health should incorporate psychosocial support for healthcare professionals during pandemics. This study highlights the need for developing policies to decrease mental health problems among HCPs during the COVID-19 pandemic.
Efficacy and safety of sofosbuvir in the treatment of SARS-CoV-2: an open label phase II trial
Authors: Alavi-Moghaddam Mostafa , Sistanizad Mohammad , Haghighi Mehrdad , Sabaghian Tahereh , Gholami Chaboki Bahare , Soroureddin Zahra 
Published: January 2023

Objective:
Despite the worldwide spread of the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), an effective specific antiviral treatment for coronavirus disease of 2019 (COVID-19) is yet to be identified .We did this study to investigate the safety and efficacy of sofosbuvir as antiviral therapy among hospitalized adult patients with SARS-CoV-2.
Methods:
Patients were randomized into intervention arm receiving sofosbuvir or comparison arm receiving usual antiviral agents in addition to standard of care. The primary end point of the study was clinical recovery as defined by normal body temperature and normal oxygen saturation. The main secondary outcome was all-cause mortality during the admission in hospital or within 14 days after discharge if applicable. Reports of severe adverse events were observed in the intervention arm.
Results:
Fifty-seven patients enrolled into either the clinical trial arm (n=27) or the comparison arm (n=30). Primary outcome was achieved by 24 (88.9%) and 10 (33.3%) in the intervention and comparison arms, respectively. Median hospital length of stay was significantly shorter in the intervention arm (10 days [IQR: 5-12] vs. 11.5 days [IQR: 8.5-17.75], P = 0.016).
All-cause mortality was two and thirteen in intervention and comparison groups, respectively. No serious adverse events were reported by the patients receiving sofosbuvir during the study.
Conclusion:
Among patients hospitalized with SARS-CoV-2, those who received sofosbuvir had more clinical recovery rate and had a shorter hospital length of stay than those who received usual antiviral agents in the study and these differences were statistically significant.
Temperature dependence of the viscosity of water-fuel oil emulsions
Authors: Chernenko A.S. , Shyngarov G.L. , Ivanov M.O. , Sydorov О.Е. 
Published: January 2023

The experimental dependence of the kinematic viscosity of oil-water emulsions on temperature was examined. Oil-water emulsions with a high water content (up to 60%) were prepared by long-term mechanical stirring in a cylindrical vessel using a screw with metal brushes. The Stokes method was used to determine the viscosity. Emulsions are opaque liquids. Therefore, the movement metal ball's time between the upper and lower layers of liquid was determined. At the same time, there was a layer of water under the emulsion in the tube. To measure the viscosity at different temperatures, the system was placed in a larger flask through which heated water was pumped.
As a result, it was experimentally shown that the fuel oil viscosity is lower than oil-water emulsions viscosity (at the same temperatures). As the water content in the emulsion increases, its viscosity increases. In order to meet the conditions of optimal sprey of WOE (as well as other similar fuels), they must be heated to temperatures higher than those recommended for pure (non-emulsified) fuel oil.
TRANSFORMATIONAL FEATURES OF "CORONAVIRUS" ANTI-PROVERBS IN THE RUSSIAN LANGUAGE
Authors: Mao You , Yan Zhike 
Published: January 2023

Summary. Research purpose – to analyze the ways in which anti-proverbs in Russian were transformed during the COVID-19 pandemic; to reveal the mentality of people in Russia during the pandemic as reflected in these anti-proverbs. Research object – Russian anti-proverbs during the COVID-19 pandemic. Research methodology – Word frequency statistics; comparative analysis; corpus analysis; literature analysis. Research result – 89 Russian anti-proverbs of pandemic were analyzed in terms of their ways of transformation, and it was found that 81 of them used substitution, 5 used associative extension, 2 used both ways, and 1 used homonymic mean. Word frequency statistics of thematic vocabulary were done for these anti-proverbs to obtain high frequency thematic vocabulary, and the results are as follows: вирус (23), карантин (8), маска (7), чихать (7), ковид (5), лечиться (5), вакцина / прививочный (5), заразить (4), Ухань / китаец (4), пандемия (3), инфицированный (3), антисептик (3). Conclusion. By collating and analyzing the anti-proverbs that appeared in Russian during the pandemic, it was found that the transformation of anti-proverbs during the period included substitution, extension, and a combination of various methods. Meanwhile, high-frequency words such as карантин, маска, чихать etc. in the anti-proverbs reflected to a certain extent the living conditions of Russian people during the pandemic. The anti-proverbs themselves contained a wealth of content, including people's fear and disgust of the virus, their ambivalence toward home quarantine, their negative attitude toward the vaccine at the beginning of the epidemic, as well as their misunderstanding of Wuhan, China. At the same time, they took an active role in protection, washing their hands regularly, wearing masks, and keeping social distance, and gained inspiration for healthy living from the epidemic. Value of research. Theoretically, the study of Russian anti-proverbs during the pandemic period can effectively contribute to the development of linguistics as a new change in the language; practically, we can see from these anti-proverbs some characteristics of people's mentality during that period. In addition, the humorous feature of anti-proverbs can be used in the education of Russian language to enhance students' interest in learning Russian proverbs and thus help them memorize traditional proverbs.
Formação inicial com foco nas altas habilidades/superdotação: práticas inclusivas em ciências biológicas
Authors: Brunetti Dulceni Avila 
Published: January 2023

O tema inclusão de estudantes com necessidades educacionais especiais é normalmente atrelado a alguma deficiência e habitualmente os estudantes com Altas Habilidades/Superdotação (AH/SD) não são vistos como público da Educação Especial. Para mudar essa realidade este trabalho socializa uma pesquisa desenvolvida em 2021 que propôs que os conhecimentos sobre a temática Altas Habilidades/Superdotação (AH/SD sejam tratadas desde a formação inicial de professores, pois cabem aos mesmos as adequações necessárias ao desenvolvimento do potencial desses estudantes. Por conseguinte, este trabalho, resultado de uma pesquisa de mestrado visa contribuir para a formação inicial de professores do curso de Ciências Biológicas no tocante a temática AH/SD, por meio da intervenção de um curso. A metodologia adotada na pesquisa foi qualitativa na modalidade participante. Os sujeitos da pesquisa foram quinze graduandos do quarto ano da disciplina de Estágio Supervisionado em Ciências Biológicas II, do curso de Ciências Biológicas-Licenciatura da UNICENTRO, Guarapuava-PR. Na análise dos resultados, percebeu-se que o curso contribuiu de maneira significativa na formação inicial docente, ampliando os olhares dos participantes sobre a temática proposta. De maneira geral, os licenciandos surpreenderam positivamente quanto ao interesse em relação a temática tratada e aos avanços significativos em relação aos conceitos e conhecimentos prévios demonstrados inicialmente
O erro na Matemática no contexto do ensino remoto: percepções de professores
Authors: Silva Marcelo Henrique Moreira Oliveira , Fernandes Janaína Da Silva Gonçalves 
Published: January 2023

A pesquisa busca compreender as percepções de professores sobre a ocorrência do erro no processo de ensino e aprendizagem da matemática no ensino remoto. O método utilizado é de abordagem qualitativa, do tipo descritivo exploratório. Foram convidados a participar da pesquisa dez professores, de ambos os sexos, que estavam à disposição do pesquisador, por técnica de amostragem denominada Snowball. Para a coleta de dados foram utilizados questionários sociodemográfico e estruturado, compartilhados em formulário do Google por meio virtual. Os dados foram analisados por meio da análise do conteúdo da Classificação Hierárquica Descendente. Os resultados permitiram a inferência de seis categorias relacionadas as percepções destes professores sobre os desafios no ensino remoto: vídeo chamadas online, Google sala de aula, maior confiança nas aulas presenciais, ensino híbrido como opção para aprendizagem, dificuldades com conteúdos remotos e adaptação ao ensino remoto. Em relação ao erro no ensino-aprendizagem da matemática na percepção destes professores foram cinco categorias inferidas: ensinar exercícios rotineiros, processo de ensino e aprendizagem remota em crianças, adolescentes e adultos, maior dificuldade de apoiar o aluno no ensino remoto, necessidade de maior valorização e investimento nas aulas de matemática, entender as dúvidas perante o erro. Considerou-se que tema sobre o erro no processo de ensino aprendizagem da matemática no contexto do ensino remoto aparece de uma forma vaga, pois este assunto é tratado como resolução de problemas e com pouco enfoque de tratar os possíveis erros como fonte de aprendizado e não como fonte de punição.