bluuebunny/crossref_metadata_2025 huggingface dataset:
Autoantibodies as potential prognostic factors for clinical outcomes related to COVID-19: a systematic review of inception prospective cohort studies with GRADE recommendations
Authors: Araújo F.C. , Amaral A.C.D. , Silva H.J. , Santos J.N.V. , Mendonça V.A. , Oliveira V.C. de , Rocha-Vieira E.
Published: January 2025

This systematic review of inception prospective cohort studies aimed to investigate whether autoantibodies are potential prognostic factors for short- and long-term clinical outcomes of COVID-19. Searches were conducted in MEDLINE, EMBASE, AMED, GLOBAL HEALTH, and COCHRANE databases from 2019 to 2022. When possible, meta-analysis was conducted, otherwise findings from individual studies were reported using odds ratios (OR) with 95% confidence intervals (CI). Quality of evidence was summarized using the GRADE criteria. We identified 2292 references, 18 inception prospective cohort studies (3178 patients) were included in the systematic review, and 12 studies reached criteria for meta-analysis. Studies achieved, in general, low to moderate risk of bias. Moderate quality of evidence showed that anti-interferon (IFN) was associated with increased risk of severity (OR=7.75; CI=1.79-33.61) and mechanical ventilation (OR=4.19; CI=2.06-8.53), but not with COVID-19 mortality (OR=1.68; CI=0.63-4.44). Antiphospholipids were not associated with COVID-19 mortality (OR=1.42; CI=0.85-2.37; P=0.18; I2=3.21) nor with thrombosis risk (OR=1.41; CI: 0.71-2.8; P=0.33). Antinuclear antibody level was not associated with risk of mortality or severity (risk for mortality: OR=3.8; CI=0.78-18.6; P=0.1; I2: 32.3; severity: OR=1.74; CI=0.96-3.16; P=0.07). Evidence currently available is insufficient for a quantitative analysis of autoantibodies association with long COVID-19. Anti-IFN measurement should be considered in COVID-19 follow-up. In a population-based rational, optimized vaccination strategies should be considered for individuals with anti-IFN antibodies since it could represent a risk for a worse prognosis. High-quality prospective studies for short- and long-term disease effects and autoantibody evaluation are still needed.
Optimization of solar water heating absorber riser with header tube using RSM and CFD simulation
Authors: Narayanasamy Sivakumar , Iruthayasamy George , Perumal Ramesh , Ramasamy Kalaivanan
Published: January 2025

ABSTRACT The growing global energy demand and environmental concerns underscore the importance of optimizing solar water heating systems (SWHS) with an emphasis on material properties to enhance thermal efficiency. Despite technological advancements, challenges in material selection, riser tube design, and operational parameters limit the performance of SWHS. This study focuses on optimizing the thermal efficiency of a solar flat plate collector by integrating material analysis within a combined Computational Fluid Dynamics (CFD) simulation and Response Surface Methodology (RSM) framework. By exploring the effects of riser count, material conductivity, mass flow rate, and inclination angle, the study demonstrates how material properties significantly influence heat transfer. Copper, as the absorber material, exhibited superior thermal performance, with optimized conditions achieving a maximum outlet temperature of 350.61 K. The combined CFD-RSM methodology minimized experimental iterations and provided a deeper understanding of the interplay between material properties and system dynamics. These findings highlight the critical role of material selection in developing cost-effective, high-efficiency solar absorbers. Future research should investigate advanced materials and innovative geometries to enhance the performance and sustainability of SWHS further.
Evidência psicométrica do Inventário de Sexismo Ambivalente em graduandos de Enfermagem de uma instituição pública
Authors: Vasconcelos Susane , Penna Lucia Helena Garcia , Formiga Nilton Soares , Damasceno Rudson Oliveira , Ribeiro Liana Viana , Leira Bianca Carvalho de Abreu
Published: January 2025

Objetivo: verificar a consistência interna e estrutural do Inventário do Sexismo Ambivalente em jovens do curso de graduação de Enfermagem. Método: estudo metodológico, de corte transversal, realizado com participantes jovens universitários, matriculados no curso de graduação em Enfermagem de uma universidade pública. Os dados foram obtidos por meio de questionários sociodemográficos/acadêmicos e Inventário de Sexismo Ambivalente. A análise realizada utilizou correlação de Pearson, alfa de Cronbach, correlação intraclasse, teste t e razão qui-quadrado e graus de liberdade, além de análise fatorial confirmatória para testar a consistência da existência do modelo bifatorial. Resultados: a amostra foi composta por 305 graduandos. O modelo bifatorial oblíquo apresentou indicadores estatísticos que justificam a consistência da estrutura bifatorial do sexismo na população-alvo do estudo. Além disso, os indicadores psicométricos do inventário revelaram resultados satisfatórios. A análise de regressão preditiva confirmou a estrutura, demonstrando sua consistência e robustez para avaliar tanto o sexismo hostil quanto o sexismo benevolente entre os jovens universitários de Enfermagem. Conclusão: foi identificado suporte à teoria do sexismo ambivalente, refletindo consistência do modelo bifatorial oblíquo. A análise das propriedades psicométricas do inventário, incluindo validade e confiabilidade, reforça sua aplicabilidade e relevância na pesquisa sobre questões de gênero na área da saúde.
Liver under attack: impacts of high-fat diet on murine model
Authors: Peppi P. F. , Lira G. A. , Campos L. R. S. , Santos C. R. , Lima E. M. M. , Barreto-Vianna A. R. C.
Published: January 2025

Abstract At present, non-alcoholic fatty liver disease (NAFLD) is the most prevalent liver disease worldwide, with obesity recognized as a global epidemic and type 2 diabetes a worldwide disease. In this study, 10 C57BL/6 mice were divided into two groups: the control group (SC) and the high-fat diet (HF) group. Both groups were fed their respective diets for 8 weeks. The animals were analyzed for body weight, glucose/insulin resistance, hepatic steatosis, and fibrosis to diagnose NAFLD. Results showed that the HF group animals had significantly higher body weight (P<0.0001), glucose resistance (P=0.0002), insulin resistance (P=0.0009), and blood glucose levels (P<0.05) compared to the SC group. The HF group exhibited increased hepatic steatosis (P<0.0001) and fibrosis (P<0.0001) compared to the SC group. These findings led to the conclusion that the animals in the HF group had grade and stage 2 NAFLD. Furthermore, the HF group animals were classified as obese, indicating a higher risk for developing insulin resistance and, subsequently, type 2 diabetes mellitus (T2DM). Understanding the risk factors and complications associated with NAFLD, obesity, and T2DM is crucial for preventing and treating metabolic alterations linked to a high-fat diet.
Histopathology and genotoxicity alterations in high Andean catfishes from the Upper Orinoco River Basin, Colombia
Authors: Corredor-Santamaría W. , Alvarez-Silva J. P. , Pérez-Mayorga M. A. , Velasco-Santamaría Y. M. , Roa-Fuentes C. A. , Espinosa-Ramírez A. J.
Published: January 2025

Abstract Freshwater ecosystem pollution has motivated an extensive list of studies due to deleterious impacts becoming a threat to aquatic organisms that inhabit these environments. This is the first approach to water pollution impact derived from human activities on native ichthyofauna in the Garagoa river basin in Boyacá (Colombian Andes). Therefore, the aim of the present study was to evaluate the occurrence of mercury and arsenic in catfishes and armored catfishes from the Garagoa River basin and the presence of hepatic alterations and genotoxicity in peripheral blood. Biomarkers of effect were analyzed in fishes caught in eight tributaries from Garagoa river basin. The increased presence of lesions in the hepatic architecture and nuclear abnormalities in peripheral blood erythrocytes in Dolichancistrus fuesslii, Chaetostoma joropo, Astroblepus latidens and Trichomycterus cf. knerii individuals could be associated with exposure of pollutants. The tissue alterations observed compromise the fish health, due to the biotransformation processes of xenobiotics such as mercury and arsenic and probably other contaminants. We need to increase surveillance in the Garagoa River to ensure ecological health, recognize hematological and tissue effects in native fishes, and develop effective monitoring strategies to mitigate sources of pollution.
Selection of black bean pre-cultivars based on adaptability and stability for the State of Rio de Janeiro
Authors: Nascimento M. R. , Daher R. F. , Amaral Júnior A. T. , Gravina G. A. , Souza Filho B. F. , Souza A. G. , Ambrósio M. , Santana J. G. S. , Vidal A. K. F. , Freitas R. S. , Leite C. L. , Santos P. R. , Costa A. F. , Melo L. C.
Published: January 2025

Abstract The development of new cultivars is a strategy used in breeding programs to increase food production with environmental sustainability. The genotype × environment interaction is a great challenge in the identification and selection of superior genotypes for different edaphoclimatic conditions. Due to this interaction, it is essential to select and develop materials that can provide not only high productivity but also wide adaptability and production stability. Given the above, this work aims to select bean pre-cultivars regarding grain productivity, adaptability and stability for the State of Rio de Janeiro. In the 2018 harvest, two inbred lines competition trials were carried out and three in the 2019 harvest. Eleven black bean genotypes were evaluated in five environments, and the experiments were set up in a randomized block design with three replications. The adaptability and genotypic stability were assessed via the GGE Biplot, Eberhart and Russell and Lin and Binns methodologies, with the aid of the GENES and R software systems. The methodologies based on simple linear regression and non-parametric statistical analysis were concordant in the identification of genotypes with production stability (BRS Esteio, BRS FP 403 and CNFP 16459), responsive to environmental improvement (BRS Esteio) and adapted to unfavorable environments (BRS Esteio). Furthermore, BRS Esteio was classified as the ideotype and presented the best adaptability, high stability and performance above the general average. Thus, the adaptability and stability analysis methodologies proved to be effective and consistent in identifying superior genotypes.
Microbial diversity and biotechnological potential of mangrove leaf litter in Kebun Raya Mangrove, Surabaya, Indonesia
Authors: Alifia L. , Zulaika E. , Soeprijanto S. , Hamzah A. , Luqman A.
Published: January 2025

Abstract Mangrove ecosystems play a crucial role in maintaining ecological balance with leaf litter serving as an important substrate for diverse microbial communities. This study investigates the microbial communities inhabiting leaf litter from four different mangrove species: Rhizophora apiculata, Rhizophora stylosa, Sonneratia caseolaris, and Avicennia marina collected from Kebun Raya Mangrove, Surabaya, Indonesia. Using metagenomic sequencing, we revealed that Proteobacteria were predominant, followed by Chlorobi and Actinobacteria in the samples. Interestingly, we detected notable populations of anaerobic bacteria, including genus of Chlorobaculum and Allochromatium. Metagenomic analyses exhibited high levels of adaptation to stressors, evidenced by the prevalence of genes conferring resistance to antibiotics (e.g., beta-lactams, tetracyclines), heavy metals (e.g., chromium, arsenic), and hydrocarbons. Furthermore, the metagenomic analysis revealed the presence of genes involved in the biosynthesis of polyunsaturated fatty acids (PUFAs), antimicrobial compounds, and plant growth-promoting activities. These findings highlight the potential of mangrove leaf litter as a reservoir of beneficial microbes with diverse biotechnological applications, including bioremediation, nutraceuticals, pharmaceuticals, and agriculture.
Experiences of nursing students affected by covid-19 during face to face education: qualitative research
Authors: Dünmez Hilal , Akkaya Gülnur
Published: January 2025

ABSTRACT Objective: This study was conducted to determine the experiences of nursing students who received face-to-face education during the COVID-19 pandemic and contracted COVID-19. Method: A phenomenological qualitative study was used to understand the students’ experiences, and the study was completed with 11 students who volunteered. Semi-structured online interviews were conducted using an interview guide, and the interviews were recorded. Thematic analysis was employed to generate themes. MAXQDA 2022 software was used for the analysis of the research. Results: As a result of the research, 3 themes; themes are as follows: “COVID-19 disease process” with the sub-themes “emotions” and “gains”; “Educational process” with the sub-themes “technological problems”, financial constraints”, and “legal issues”; “nursing profession and values” with the sub-themes “importance of nursing”, “intense and challenging working environment”. Conclusion: According to the experiences of students who contracted Covid-19 disease during face-to-face education during the Covid-19 epidemic, it was concluded that nursing students should be provided with the necessary technological support, the legal regulations of universities should be revised, and psychosocial support should be provided to students.
FADIGA E QUALIDADE DE VIDA EM PROFISSIONAIS DE SAÚDE DA URGÊNCIA E EMERGÊNCIA
Authors: Santos Mariana Alvina dos , Luchesi Bruna Moretti , Facin Victoria Laura , Santos Edirlei Machado dos , Toffano Silmara Elaine Malaguti , Pereira Flavia Helena , Azambuja Vivian dos Anjos , Santos Vinicius Batista dos
Published: January 2025

RESUMO Objetivo: identificar a prevalência de fadiga e a relação entre variáveis profissionais, de saúde e qualidade de vida de profissionais atuantes em serviços de urgência e emergência. Método: estudo transversal, com 108 profissionais de saúde, realizado na região Centro-Oeste do Brasil, no ano de 2021, utilizando a Escala de Fadiga de Chalder e o World Health Organization Quality of Life-brief. Os dados foram analisados por meio de estatística descritiva, associação e correlação. Resultados: a maioria dos participantes era do sexo feminino (63,0%), com idade entre 18 e 25 anos (41,7%), técnicos de enfermagem (50,0%) que atuavam em Unidade de Pronto Atendimento (75,0%). O escore médio da avaliação da fadiga foi 5,9, e 72,9% foram classificados como fadigados. O escore médio de qualidade de vida foi 64,8 (±11,4). Participantes que praticavam atividade física e mantinham boa alimentação tinham menores escores de fadiga e relataram melhor qualidade de vida. Identificou-se correlação significativa e inversamente proporcional entre fadiga e todos os domínios da qualidade de vida. Conclusão: este estudo apresentou alta prevalência de fadiga. A qualidade de vida foi considerada baixa, principalmente no domínio físico. Quanto maior a fadiga, pior a qualidade de vida total e domínios. Reforça-se a necessidade de medidas e intervenções a fim de minimizar os impactos da fadiga e da baixa qualidade de vida dos profissionais que atuam no cuidado direto aos pacientes.
Monitoring determinants of the prevalence of child malnutrition in Brazil according to indicators of the 2030 Agenda in the year 2022
Authors: Oliveira Eliete Costa , França Ana Karina Teixeira da Cunha , Conceição Sueli Ismael Oliveira da , Silveira Victor Nogueira da Cruz , Bragança Maylla Luanna Barbosa Martins , Santos Alcione Miranda dos
Published: January 2025

ABSTRACT Objective: To select indicators of the Sustainable Development Goals (SDGs) that determine child malnutrition (CM) in Brazil and to monitor the achievement of SDG targets by region in 2022. Methods: This is a cross-sectional, ecological study that used the Brazilian Sustainable Development indices and analyzed the 100 SDG monitoring indicators in the 5,570 Brazilian municipalities. A decision tree was created and sensitivity analysis was performed to predict CM determinants. Data were analyzed using the χ2 test at 5% significance level. Descriptive analyses and the decision tree were carried out using the R software. Results: The CM determinants according to percentage, most affected regions of the country, and impact order were: illiteracy in the population aged ≥15 years (Northeast), insufficient prenatal care (North), low birth weight (South), young women aged 15-24 years who neither study nor work (North and Northeast), and employed population aged 10-17 years (South). We observed an individual and cumulative effect on the CM prevalence, ranging from 1.73 to 15.1%, in Brazilian municipalities according to the occurrence and overlap of these indicators. Conclusion: The results denote that Brazil will not achieve the intended reduction of CM by 2025. There must be substantial investments in education and health mainly aimed at the maternal and child population and especially in the North and Northeast regions.
Regional Inequalities in the Availability of Equipment, Supplies and Specialized Reference in Oral Radiology in Brazilian Primary Health Care
Authors: Silva-Junior Manoelito Ferreira , Bittarello Felipe , Monteiro Vitória , Borges Pollyana Kassia de Oliveira , Baldani Marcia Helena
Published: January 2025

ABSTRACT Objective: To analyze the availability of equipment, supplies and specialized reference in oral radiology in primary care health by comparing Brazilian geographic regions. Material and Methods: The time series analysis was carried out with secondary data extracted from official databases of the Brazilian Ministry of Health of the external evaluation cycles of the National Program for Improvement of Access and Quality of Primary Health Care (PMAQ-AB). The comparisons of Brazilian regions were performed using Chi-square and Z tests adjusted by the Bonferroni method, and among cycles (years) using the Cochran’s Q test (p<0.05). Results: In Brazil, there was an increase in the availability of X-ray equipment between 2014 and 2018 (21.9% vs. 36.3%), and supplies where there was X-ray equipment, which included lead aprons (75.6% vs. 86.4%), dark chamber (darkroom) (86.4% vs. 93.9%) and chemical products for the X-ray film processing (80.7% vs. 86.1%) (p<0.001). The specialized reference in oral radiology was higher in 2018 (71.4%) compared to 2012 (46.8%) and 2014 (66.9%) (p<0.001), with the same trend in the Northeast region (p<0.001). North and Northeast showed growing numbers for most items evaluated, with a reduction in regional inequalities. Conclusion: The availability of equipment, supplies, and specialized reference among Brazilian regions increased. Although regional inequalities persist in Brazil, a reduction was observed in the analyzed period.
Políticas de saúde e antropologia da vida na Estratégia Saúde da Família
Authors: Tavares Fátima Regina Gomes , Bonet Octavio Andres Ramón
Published: January 2025

Resumo A investigação dos dilemas e desafios envolvidos no cotidiano das políticas da Estratégia Saúde da Família (ESF) pode ser reconfigurada na confluência com uma antropologia da vida, descentrando conceitos como saúde, cuidado e sofrimento e multiplicando as trilhas por onde passam os agenciamentos de humanos e não humanos. O objetivo deste artigo é analisar a ESF enquanto uma política da vida, que implica em um descenso ao cotidiano para entender etnograficamente os emaranhados de agenciamentos coletivos que se configuram no Sistema Único de Saúde (SUS), e além dele. Aproximar-se das “teorias da vida” implica em reconsiderar a biopolítica das populações e de biopoder a partir da perspectiva de Fassin que adverte que se a biopolítica implica na dissolução da vida em corpos e população, então precisamos retomar a “política da vida” enquanto um vasto território biológico e material; social e experiencial, que permitiria incluir as ambivalências e incertezas inerentes à política do cuidado. Esse arcabouço conceitual permitirá realizar uma releitura das pesquisas dos autores em diferentes contextos etnográficos da ESF ao longo das últimas décadas.
Fragilidades em TIC na formação inicial de professores de infância em Portugal
Authors: Vieira Cristiano Rogério , Pedro Neuza
Published: January 2025

Resumo O artigo aborda a temática da integração das Tecnologias da Informação e Comunicação (TIC) na formação inicial de professores, nomeadamente a formação inicial dos educadores de infância portugueses, para tal, apresenta os resultados de um estudo nacional que analisou os documentos estruturantes dos mestrados em ensino que formam os futuros educadores de infância em Portugal. O objetivo da investigação foi identificar até que ponto os cursos de mestrado em ensino na educação pré-escolar, que formam os futuros educadores de infância portugueses, estão a integrar as tecnologias de informação e comunicação nos seus currículos de formação inicial. O estudo foi desenvolvido com base num corpus documental de 158 fichas de unidades curriculares. A informação recolhida a partir dos documentos foi analisada, através de uma metodologia qualitativa de âmbito descritivo-analítico, apoiada pelas premissas investigativas dos procedimentos de análise de conteúdo. A fim de enriquecer o estudo e enquadrá-lo no contexto europeu, os resultados foram também colocados em análise, considerando o quadro europeu para a competência digital dos educadores (DigcompEdu), e procurou identificar as àreas e as competências do referencial que se encontravam presentes nos programas currriculares dos cursos. Os resultados alcançados foram convertidos em definições operacionais que sintetizaram os conteúdos relacionados com as TIC presentes nos programas curriculares analisados. O estudo concluiu haver uma presença tímida de conteúdos relacionados com as TIC bem como com as dimensões estruturantes do DigcompEdu.
Prevenção do comportamento suicida na escola: ensino baseado em simulação (EBS)
Authors: Silva Débora Tatiane Góes , Amaral Larissa Castelo do , Pedrollo Laysa Fernanda Silva , Silva Aline Conceição , Vedana Kelly Graziani Gicacchero
Published: January 2025

Resumo O suicídio na adolescência tem aumentado nos últimos anos, o que representa uma preocupação mundial. A escola é um ambiente favorável para a identificação do sofrimento emocional e desenvolvimento de ações de promoção da saúde mental e prevenção do comportamento suicida. Com isso, esse estudo tem como objetivo construir e validar um roteiro para o ensino baseado em simulação para profissionais da comunidade escolar sobre a prevenção do suicídio. O método consiste na construção e validação de um roteiro para o ensino baseado em simulação, que se refere a uma abordagem pedagógica para o desenvolvimento de habilidades específicas para profissionais da educação. Para construção do roteiro, foi realizado levantamento da literatura científica nacional e internacional sobre prevenção do suicídio na escola, e para validação foram convidados experts em simulação e/ou prevenção do suicídio, por meio da busca na Plataforma Lattes e da técnica de Snowball. A coleta foi realizada por meio do envio de convite via e-mail com o hiperlink do formulário de coleta do Research Electronic Data Capture. Os dados foram processados e analisados pelo software estatístico STATA®. Utilizou-se a análise estatística descritiva, o índice de validade de conteúdo (IVC) e o coeficiente de concordância de Gwet First-order Agreement Coefficient (AC1). O roteiro alcançou o critério de aceitabilidade, concordância e confiabilidade na validação por experts. Este estudo disponibiliza, de forma gratuita, um roteiro que pode ser utilizado para o ensino, baseado em simulação, para contribuir com a educação continuada de profissionais da comunidade escolar sobre a promoção da saúde mental e prevenção do comportamento suicida. Recomenda-se que estudos avaliem os efeitos do roteiro sobre a autoconfiança dos profissionais.
Efeito da modificação térmica nas propriedades de madeiras exóticas de plantios comerciais
Authors: Conceição Fagner Pinheiro da , Nascimento Alexandre Miguel do , Garcia Rosilei Aparecida , Souza Natália Dias de , Oliveira Renata Nunes , Laudares Francisco Antonio Lopes
Published: January 2025

Resumo O calor é utilizado para melhorar algumas propriedades da madeira. Com isto, o objetivo deste trabalho foi verificar os efeitos do calor nas propriedades físicas e mecânica das espécies Pinus caribaea var. caribaea, Khaya ivorensis e Corymbia citriodor e verificação dos defeitos após contato com água. Para tanto, os materiais foram processados nas temperaturas de 160, 180 e 200 ºC, analisando-se também o controle. Foram avaliadas a densidade aparente, a umidade de equilíbrio, a taxa de absorção de água, a retratibilidade da madeira, e a dureza Janka. As madeiras foram alteradas diferentemente: a densidade aparente foi alterada na temperatura maior e igual a 180 ºC e o teor de umidade de equilíbrio maior e igual a 160 ºC. As retrações se diferenciaram nos tratamentos com 180 ºC para Pinus caribaea var. caribaea e Khaya ivorensis e para o Corymbia citriodora, a partir de 160 ºC. A taxa de absorção de água só foi afetada pelo tratamento térmico nas madeiras de folhosas. Rachaduras visíveis foram notadas na madeira de Corymbia citriodora, especialmente naquelas cortadas tangencialmente. A dureza da madeira melhorou na temperatura de 160 ºC, menos para o Corymbia citriodora devido ao efeito das rachaduras.
Influência de tratamentos térmicos na durabilidade e propriedades mecânicas do bambu
Authors: Oliveira Bruno Henrique de , Alves Michell Macedo , Almeida Rogério de Araújo , Nahime Bacus de Oliveira , Silva Matheus Victor de Oliveira
Published: January 2025

Resumo Este artigo apresenta a verificação da influência da variação da temperatura e do tempo de tratamento térmico nas propriedades mecânicas do bambu maciço (Dendrocalamus strictus) e da ação de insetos na sua durabilidade. Os corpos de prova foram submetidos a temperaturas de 160 ºC, 180 ºC e 200 ºC, durante 1 hora, 1h30 horas e 2 horas, em uma estufa convencional. Posteriormente foram determinadas as resistências mecânicas à tração e em compressão e o teor de umidade das amostras. O teste de ataques biológicos do bambu foi realizado por meio da exposição das amostras ao caruncho do bambu (Dinoderus minutus) por 21 dias. Foram estudados os efeitos do tratamento térmico em 3 faixas de temperatura e 3 durações de exposição, obtendo-se, em média, tensões de ruptura à compressão e de tração paralela as fibras, iguais a 68,83 MPa e de 123,53, respectivamente. Os dados obtidos demostraram que as faixas de temperatura e duração adotadas nesta pesquisa, não alteraram os resultados das propriedades mecânicas e nos testes de ataques biológicos foi constatado que o tratamento térmico reduziu a deterioração das amostras, prolongando sua durabilidade.
Proposição de diretrizes e framework para a circularidade de materiais obtidos por estratégias de construção de edificações
Authors: Vieira Mariana Fernandes Costa , Santos Annelise Silveira , Braga Guilherme Dantas , Fontes Wanna Carvalho
Published: January 2025

Resumo O padrão produtivo e econômico linear da construção civil resulta em alto consumo de recursos naturais e grande volume de resíduos. O objetivo deste artigo é propor diretrizes e um framework para a aplicação de práticas circulares no setor da construção civil, por meio da desconstrução de edificações. Para isso, foi realizada uma revisão sistemática de literatura para identificar as tipologias de materiais, componentes, elementos e sistemas construtivos mais indicados para a desconstrução. Os resultados indicaram que edifícios construídos com itens pré-fabricados, sistemas estruturais de aço e edificações em madeira possuem maior potencial para desconstrução. Além disso, foram definidas 26 diretrizes agrupadas em quatro requisitos (design, durabilidade, desmontagem e circularidade) para apoiar a desconstrução e a manutenção do ciclo de vida dos produtos construtivos recuperados. O framework proposto resumiu a contribuição teórica do trabalho em uma estrutura conceitual intuitiva e aplicável em empresas do setor da construção civil. O trabalho amplia a compreensão sobre o tema e apresenta uma abordagem inovadora de um framework associado às melhores práticas para promover a circularidade dos materiais, componentes e elementos construtivos pelo uso da desconstrução.
Plaster for internal coatings of partition walls incorporating untreated phosphosypsum
Authors: Oliveira Jorge Ivan de , Nobrega Ana Cecilia Vieira da , Freitas Julio Cezar de Oliveira , Martinelli Antonio Eduardo
Published: January 2025

Abstract Industrial by-product phosphogypsum (PG) was recovered, with no pretreatment, into plaster (G) for internal coatings of partition walls. The hydration properties of five plasters (100%G, 100%PG, 25%PG + 75%G, 50%PG + 50%G, and 75%PG + 25%G, by weight) were investigated, including water requirement for normal consistency, setting time, compressive and flexural strength, bond strength, and water absorption. Although G and PG are chemically similar, PG presented a specific surface area and total pore volume greater than G, demanding more water. The 75/25 untreated PG/G plaster fits all the technical requirements to be applied as internal coatings for partition walls.
Análise do desempenho físico-mecânico de compósitos cimentício com adição de partículas de madeira eucalipto
Authors: Leite Murilo Augusto Verissimo , Campos Cristiane Inácio de , Souza Alexandre Jorge Duarte de , Molina Julio Cesar , Silva Maria Fernanda Felippe , Silva João Vítor Felippe
Published: January 2025

Resumo A utilização de materiais compósitos produzidos com adição de matérias-primas renováveis tem conquistado ampla aceitação devido à crescente escassez de recursos naturais. Esta pesquisa teve como objetivo analisar o desempenho de compósitos produzidos com cimento e madeira com dois diferentes aglomerantes, visando avaliar a resistência à compressão aos 28 dias e a densidade aparente. Foram produzidos um total de 48 corpos de prova de cimento-madeira, distribuídos em 8 tratamentos, cada um com 6 corpos de prova. Esses tratamentos variaram em relação ao tipo de cimento Portland utilizado (CP2 e CP5), à condição das partículas de madeira de Eucalyptus grandis (pré-tratadas com água fria ou in natura) e uso do aditivo cloreto de cálcio. Foram realizados o ensaio mecânico de compressão para a determinação do módulo de elasticidade secante (Ecs,28) e da resistência média do concreto à compressão aos 28 dias (fcm) e da densidade aparente dos compósitos. Os tratamentos com cimento Portland CP5 e com aditivos tiveram melhores desempenho mecânico.
Usos finais da água em canteiros de obras: estudo de caso em Criciúma, SC
Authors: Souza Tiago Diehl , Oneda Tânia Mara Sebben , Ghisi Enedir
Published: January 2025

Resumo Entender o uso da água em um canteiro de obras é fundamental para a tomada de decisão quanto à busca de soluções alternativas visando o seu uso racional e a sustentabilidade. Esta pesquisa tem por objetivo analisar os usos finais da água em seis canteiros de obras na cidade de Criciúma-SC. Após a identificação dos aparelhos sanitários e dos usos de água nas obras em execução, foram aplicadas três formas de obtenção de dados: por meio da medição da vazão e cronometragem do tempo, por meio da frequência de utilização dos aparelhos que possuíam ciclos e por meio de baldes. Os resultados mostraram a quantidade de água potável utilizada em cada canteiro de obras e em cada aparelho. Fazendo-se a média das seis obras, a bacia sanitária foi o aparelho sanitário com maior utilização de água (34,9%), seguida do uso para confecção de argamassa pré-misturada (17,2%) e limpeza (14,4%). Quando a média do consumo foi separada em usos potáveis (bebedouro, pia, lavatório, chuveiro, argamassa pré-misturada, argamassa colante, contrapiso e gesso) e não potáveis (bacia sanitária, limpeza e cura da laje de concreto), a porcentagem dos usos não potáveis foi de 53,5%, ou seja, mais da metade do uso poderia ser substituído por uma fonte de água não potável, como, por exemplo, água pluvial ou água cinza.
REVELACIONES SOBRE EL RACISMO EN LA EDUCACIÓN SUPERIOR: ESTUDIO DE CASO
Authors: Guffante Naranjo Tania María , Cundar Ruano Adriana Ximena , Romero Flores Martha Lucía , Padilla Buñay Susana
Published: January 2025

Como fenómeno social, el racismo perpetúa desigualdades estructurales difíciles de superar. En el entorno universitario, impacta directamente sobre aspectos críticos como la equidad y la interculturalidad en detrimento del bienestar psicológico y académico de los estudiantes. El propósito del estudio fue revelar las expresiones de racismo presentes en una universidad pública ecuatoriana y las estrategias para su erradicación. El enfoque de investigación fue cualitativo, se aplicó el estudio de caso y la técnica del grupo focal como estrategia para promover la discusión crítica de las experiencias y percepciones de los estudiantes universitarios respecto al racismo. La muestra no probabilística-deliberada estuvo compuesta por 93 estudiantes de diversas etnias matriculados en las carreras de grado de la Universidad Nacional de Chimborazo. Los hallazgos evidenciaron la existencia de manifestaciones racistas expresadas en comportamientos discriminatorios, exclusión y marginación; presencia de estereotipos y prejuicios que descalifican a estudiantes de grupos minoritarios y racismo lingüístico. Las estrategias propuestas para erradicar el racismo se refieren a cambio de pensamiento, fortalecimiento de valores para la convivencia intercultural, creación de espacios de interacción, diálogo e integración, concienciación sobre la importancia de la diversidad cultural-étnica, denuncia de comportamientos racistas y democratización e interculturalización de la institución.
Modeling reservoir water electrical conductivity under the thermal stratification effect
Authors: Hassani Seyedeh Zahra , Ashofteh Parisa-Sadat , Azadi Firoozeh
Published: January 2025

In this study, the Electrical conductivity (EC) of Ekbatan reservoir water in Hamedan Province (Iran) under the impact of thermal stratification changes and water temperature for seven-scenario of reducing inflow and outflow has been assessed using the CE-QUAL-W2. Results showed that the highest and lowest EC is related to scenario of 10 and 30% reduction of outflow, respectively. Therefore, the EC largely depends on discharge, and it shows that policies of controlling the outflow can improve and reduce the salinity in water and soil. In autumn and winter, complete mixing has occurred, and thermal stratification has begun in middle of spring and continues until the end of summer. The highest EC was observed before occurrence of thermal stratification and the lowest EC was observed at the end of thermal stratification phenomenon. The lowest EC related to the fourth scenario is equal to 0.1 S/m occurred in Spring, and the highest value related to the second scenario is equal to 0.2 S/m occurred in Winter, and degree of EC sensitivity relative to temperature changes is higher than flow changes in reservoir.
Genome-Wide Association Study of Plasma Sodium Concentrations with and without Exposure to Thiazide Diuretics
Authors: Andersson Niklas Worm , Wu Xiaoping , Geller Frank , Wohlfahrt Jan , Melbye Mads , Hviid Anders , Schwinn Michael , Mikkelsen Christina , Dowsett Joseph , Bruun Mie Topholm , Aagaard Bitten , Ullum Henrik , Erikstrup Christian , Gudbjartsson Daniel Fannar , Stefánsson Kári , Ghouse Jonas , Pedersen Ole Birger , Sørensen Erik , Ostrowski Sisse Rye , Bundgaard Henning , Lund Marie , Feenstra Bjarke ,   on behalf of the DBDS Genomic Consortium
Published: January 2025

Background:

Abnormal plasma sodium concentration represents an imbalance of total body water relative to electrolyte content. Hyponatremia is a common and potentially severe adverse event, and thiazide diuretics constitute a leading cause of drug-induced hyponatremia.

Methods:

We conducted genome-wide association study analyses of plasma sodium concentration, thiazide-induced decrease in sodium concentration, and thiazide-induced hyponatremia in a total of 188,464 individuals of European ancestry . Additionally, we tested for gene-environment interaction between a polygenic score developed for plasma sodium concentration and thiazide exposure on sodium concentration and hyponatremia risk.

Results:

Meta-analysis yielded 31 independent associated signals at P<5×10−8 with plasma sodium concentrations. Subsequent tissue specificity analysis showed a significantly increased expression of sodium-associated genes in pituitary tissue (P=4.5×10−5). No genome-wide significant loci were found for thiazide-induced sodium concentration decrease or thiazide-induced hyponatremia. A polygenic score for plasma sodium concentration was associated with 0.43 (95% confidence interval (CI) = 0.39-0.46) mmol/L lower plasma sodium per standard deviation lower, and thiazide use was associated with 0.80 (95% CI=0.72-0.88) mmol/L lower plasma sodium, but we observed no gene-environment interaction effect (P=0.71).

Conclusions:

These results underline the role of genetic variation in regulating plasma sodium concentration and highlight the importance of pathways involving the pituitary gland while finding no evidence of genetic predisposition for the plasma sodium-lowering effect of thiazides.
Post-transplant Thrombotic Microangiopathy
Authors: Java Anuja , Sparks Matthew A. , Kavanagh David
Published: January 2025

Thrombotic microangiopathy (TMA) is a challenging and serious complication of kidney transplantation that significantly impacts graft and patient survival, occurring in 0.8–15% of transplant recipients. TMA is characterized by microangiopathic hemolytic anemia, thrombocytopenia, and organ injury due to endothelial damage and microthrombi formation in small vessels. However, clinical features can range from a renal-limited form, diagnosed only on a kidney biopsy, to full-blown systemic manifestations, which include neurological, gastrointestinal, and cardiovascular injury. TMA can arise due to genetic or acquired defects such as in complement-mediated TMA or can occur in the context of other conditions like infections, autoimmune diseases or immunosuppressive drugs, where complement activation may also play a role. Recurrent TMA after kidney transplant is almost always complement-mediated, although complement overactivation may also play a role in de novo post-transplant TMAs associated with ischemia-reperfusion injury, immunosuppressive drugs, antibody-mediated rejection, viral infections, and relapse of autoimmune diseases such as, antiphospholipid antibody syndrome. Differentiating between a complement-mediated process and one triggered by other factors is often challenging but critical to minimize allograft damage since the former is non-responsive to supportive therapy, needs long-term anti-complement therapy and has a high risk of recurrence. Given the central role of complement and impact of genetic defects on the risk of recurrence in many forms of post-transplant TMA, genetic testing for complement disorders is key for proper diagnosis and management. Given that complement activation may also play a role in a subset of TMAs associated with other conditions, prompt recognition and timely initiation of anti-complement therapy is equally important. Additionally, TMA associated with non-complement genes, often part of a broader syndromic process with distinct clinical features, has also been described. Early identification and treatment are essential to prevent graft failure and other severe complications. This review explores the pathophysiological mechanisms underlying various post-transplant TMAs.
Half a Decade of Artificial Intelligence in Education in Africa: Trends, Opportunities, Challenges and Future Directions
Authors:   Ghana Communication Technology University, Ghana, Ahmed Antwi-Boampong , King Boison David ,   Wigwe University, River State, Nigeria, Hiran Kamal Kant ,   Sir Padampat Singhania University, Udaipur, India, Dadhich Manish ,   Sir Padampat Singhania University, Udaipur, India, Malcalm Ebenezer ,   Ghana Communication Technology University, Ghana
Published: January 2025

Abstract : Artificial Intelligence (AI) is reshaping numerous sectors, including education. This study delves into AI in education (AIEd) within Africa, analyzing its trends, opportunities, challenges, and prospective paths. Employing the PRISMA framework, we systematically reviewed 22 articles published from 2017 to 2022. Our findings underscore the pivotal role of AIEd in Africa's educational landscape, highlighting the shift towards adaptive testing, particularly computer-adaptive testing (CAT), and its advantages, like precise student assessments and reduced test durations. The study also explores strategies to enhance graduate employability, emphasizing university-industry collaborations, curriculum updates, and quality assurance. Furthermore, it examines the implications of the Fourth Industrial Revolution (4IR) in education, advocating for integrating emerging technologies and adapting educational content and practices to meet digital-era challenges. While technology integration, including smartphones and ICT tools like Moodle, shows promise for enriching learning experiences, we identify pressing challenges such as resource contextualization, teacher training, and ethical issues. The study concludes with targeted recommendations for educators, policymakers, and African stakeholders to harness AIEd effectively. Emphasizing areas like adaptive testing, robust university-industry partnerships, 4IR-aligned curriculum development, and ethical, inclusive technology integration, these recommendations aim to empower African education systems to capitalize on AIEd's benefits while navigating the complexities of the digital age.

Keywords :Artificial intelligence; education; Africa; 4IRE
Agency in Community: Understanding Gender-Based Violence from within a Muslim Community in Lenasia, Johannesburg
Authors: Lombard Aaishah , Hankela Elina
Published: January 2025

This qualitative study examines how a group of Muslims in a conservative community in Lenasia, Johannesburg, engaged with Islam and gender-based violence (GBV). Drawing on the framework of lived religion and Saba Mahmood's conceptualization of agency and embodiment, the article highlights how the 13 interviewees actively negotiated their perceptions of and approach to GBV within their religious and cultural environment. First, the participants actively chose their religious authorities and illustrated how these authorities portrayed an Islam that is gender-just. Second, while largely opting to rather ignore than criticize probable patriarchal tones in their religion, participants freely expressed their critical views on patriarchy and GBV in relation to their culture. Through highlighting the agency and logic in the participants' engagement with GBV, the article underscores the importance of involving conservative religious communities in combating GBV in their own terms.
Social research methods for students and scholars of theology and religious studies
Authors: Nwosu Patrick U.
Published: January 2025

Iyadurai, J. 2023. Social research methods for students and scholars of theology and religious studies. Chennai: Marina Centre for Inter-disciplinary Studies in Religion. 263 pages. ISBN: 978-93-5620-82-9. ISBN: 978-93-5627-844-8 (eBook).

This published work by Joshua Iyadurai is very timely and relevant for theologians, scholars in the field of religious studies, and students of different cultures and institutions. In this work, Iyadurai proposes multidisciplinary approaches in the study of religions that consider strategies rooted in social sciences.
Development of the Sisonke Supervision Mentoring Programme
Authors: Condy Janet , Phillips Heather Nadia , Engel-Hills Penelope , de la Harpe Retha , Uys Corrie , Bester Dirk , Geerts Sjirk
Published: January 2025

In this paper we map new ways of supporting and capacitating novice supervisors. During the COVID 19 pandemic, we hosted weekly online collaborative workshops designed to reflect on a process of common learning, in which established and novice supervisors engaged with and discussed their individual supervisory needs. This process revealed, with particular clarity, the complexities of mentoring supervisors at a University of Technology (UoT) and enabled the development of the Sisonke Supervision Mentoring Programme (SSMP). This new identification of key aspects offers insight and benefit to similar programmes. The Community of Practice (CoP) theory was appropriate for this context since it allowed the construction of mentoring spaces in which people could engage mutually in activities to improve their supervisory practices. Using an interpretivist paradigm and inductively and qualitatively analysing transcripts revealed four key subjects for discussion: learning should be non-hierarchical; collaboration and reflection take place in in CoPs; care rather than competition should be paramount; and mentorship supervision is a joint responsibility.
Systemic inarticulation as an obstacle to the education aspirations of mature women ECD practitioners
Authors: Aploon-Zokufa Kaylianne , Papier Joy
Published: January 2025

Recent research in South Africa indicates that notwithstanding official policies on articulation, Early Childhood Development (ECD) practitioners who obtain a qualification in their field at a Technical and Vocational Education and Training (TVET) college face significant hurdles in trying to access a university degree. In this article, we report on research conducted among a group of mature women who completed ECD programmes at TVET colleges, and their learning pathways toward the university Bachelor of Education qualification. Applying a narrative methodology, we conducted in-depth life history interviews to map the learning pathways of mature women ECD practitioners and to understand their education and training endeavours. Their stories revealed a number of barriers they encountered as mature women students, but in this article we highlight in particular the blockage they faced in seeking vertical progression through articulation of the ECD Level 5 and Level 6 Certificates with the Bachelor of Education degree, which led to a curriculum mapping exercise that attempted to shed light on this aspect. A key finding was that of programme and institutional inarticulation, resulting in stymied higher education aspirations for the majority of women in this study.