Abstract Sisal (Agave sisalana) is a plant exploited in semi-arid regions of Brazil for fiber production, but the floral scape of sisal (peduncle) is collected and often burned, causing environmental problems, even through irregular disposal. To circumvent this scenario, the objective of this work was to produce reconstituted panels using the sisal arrow and castor-based polyurethane resin. The panels were obtained using 175 g of crushed sisal arrow core with dimensions smaller than 2 mm and adopting 10% castor-based polyurethane resin and The samples were pressed under tension of 2 MPa. The properties of reconstituted panel were evaluated through NBR 14810-1 (ABNT, 2013) and NBR 14810-2 (ABNT, 2018), the physical properties were investigated: moisture, density, thickness swelling and absorption; as well as mechanical properties: MOR, MOE, internal bond and parallel compression. The found results show that the panel is classified as low density (419.8 kg/m³), and with physical and mechanical properties similars to other panels of the same classification in the literature. For average values of MOR and MOE it was found 5.24 MPa and 147.49 MPa, respectively. For internal bonding it was found 0.14 MPa and for parallel compression properties it was found 1.14 MPa.

Resumo O sisal (Agave sisalana) é uma planta explorada nas regiões semiáridas do Brasil para produção de fibras, mas o escapo floral do sisal (flecha) é coletado e frequentemente queimado causando problemas ambientais, até mesmo pelo descarte irregular. Para contornar este cenário, o objetivo deste trabalho foi produzir painéis reconstituídos usando a flecha do sisal e resina poliuretana à base de mamona. Os painéis foram obtidos empregando 175 g do miolo da flecha de sisal triturada com dimensões inferiores a 2 mm e adotando 10% de resina poliuretana à base de mamona e as amostras foram prensadas com tensão de 2 MPa. Avaliou-se no painel reconstituído, através da NBR 14810-1 (ABNT, 2013) e NBR 14810-2 (ABNT, 2018) as propriedades físicas: umidade, densidade, inchamento e absorção; bem como as propriedades mecânicas: MOR, MOE, força de ligação e compressão paralela. Os resultados encontrados mostram que o painel é classificado como de baixa densidade (419,8 kg/m³), e de propriedades físicas e mecânicas semelhantes a outros painéis de mesma classificação da literatura. Para MOR e MOE foram encontrados 5,24 MPa e 147,49 MPa de média, respectivamente. Já os ensaios de tração perpendicular e compressão paralela obtiveram resultados de 0,14 MPa e 1,14 MPa, respectivamente.

ABSTRACT: The use of plant resistance acts by intervening in the herbivore-host relationship, through morphological, physical or chemical factors of the plant. This study evaluated the oviposition and foliar consumption of Chrysodeixis includens (Walker [1858]) in soybean genotypes, in free- and no-choice tests, correlating them with the factors, density and size of trichomes. The experiments were carried out in laboratory (25 ± 2 °C; RH= 70 ± 10%; photoperiod 14h) using five cultivars (BRS 391, BRS 6203 RR, BMX Valente RR, Tec Irga 6070 RR, BMX Icone Ipro) and two isolines (PELBR 10-6000 and PELBR 10-6049). The trichomes reported were filiform tectors and claviform multicellular glandular. The density of glandular trichomes, in stages V2 and V5, was higher on BRS 6203 RR and BRS 391, respectively. The higher density of glandular trichomes was observed in V5 and a higher density of tector trichomes in V2. The lowest densities and the smallest sizes of trichomes in V2 and V5 stages was observed on PELBR 10-6049. The size of tector trichomes and the number of eggs did not differ among the cultivars. Foliar consumption was lower for on BMX Icone Ipro and Tec Irga 6070 RR. Trichome density influences the consumption and oviposition behavior of C. includens.

RESUMO: O uso da resistência de plantas atua intervindo na relação herbívoro-hospedeiro, através de fatores morfológicos, físicos ou químicos da planta. O objetivo deste trabalho foi avaliar a oviposição e o consumo foliar de Chrysodeixis includens (Walker [1858]) em genótipos de soja, através de testes com e sem escolha, correlacionando-os com os fatores, densidade e tamanho de tricomas. Os experimentos foram realizados em laboratório (25 ± 2 °C; UR= 70 ± 10%; fotoperíodo 14h) utilizando cinco cultivares (BRS 391, BRS 6203 RR, BMX Valente RR, Tec Irga 6070 RR, BMX Icone Ipro) e duas linhagens (PELBR 10-6000 e PELBR 10-6049). Os tricomas encontrados foram tectores filiformes e glandulares multicelulares claviformes. A densidade de tricomas glandulares nos estágios V2 e V5, foi maior em BRS 6203 RR e BRS 391, respectivamente. A maior densidade de tricomas glandulares foi observada em V5 e a maior densidade de tricomas tectores em V2. As menores densidades e os menores tamanhos de tricomas nos estágios V2 e V5 foram observados em PELBR 10-6049. O tamanho de tricomas tectores e o número de ovos não diferiram entre as cultivares. O consumo foliar foi menor para BMX Icone Ipro e Tec Irga 6070 RR. A densidade de tricomas influência o comportamento de consumo e oviposição de C. includens.

Resumen: El presente estudio tuvo como objetivo verificar el papel mediador de la orientación a la dominancia social en la relación entre el núcleo de la tríada oscura y el ambientalismo. Participaron 305 personas con edades comprendidas entre 18 y 77 años (Medad = 26,4; DEedad = 11,25; 59,7 % mujeres). Los resultados indicaron que, entre los 8 rasgos de personalidad analizados considerando los modelos Big Five y Dark Triad, solo la psicopatía se correlacionó con el ambientalismo, que se correlacionó moderadamente con la orientación a la dominancia social. Considerando que los tres rasgos oscuros comparten déficits empáticos, baja amabilidad y honestidad/humildad, se probó el efecto del núcleo de la tríada oscura para la predicción del ambientalismo y se observaron efectos directos. Sin embargo, tales efectos directos no fueron estadísticamente significativos con la inclusión de la orientación a la dominancia social, configurando una mediación completa, ya que el núcleo oscuro predice indirectamente el ambientalismo. Por lo tanto, se observa que la dominancia social funciona como un mecanismo que permite a las personas con rasgos oscuros no preocuparse por el medio ambiente y explotarlo en beneficio propio.

Abstract: The present study aimed to verify the mediating role of social dominance orientation in the relationship between the core of the dark triad and environmentalism. Participants were 305 people aged between 18 and 77 years old (Mage = 26.4; SDage = 11.25; 59.7 % women). The results indicated that among the 8 personality traits analyzed, considering the Big Five and Dark Triad models, only psychopathy was correlated with environmentalism, which was moderately correlated with social dominance orientation. Considering that the three dark traits shared empathic deficits, low agreeableness and honesty/humility, the effect of the dark triad core was tested for the prediction of environmentalism, observing direct effects. However, such direct effects did not remain statistically significant with the inclusion of social dominance orientation, configuring a complete mediation, since the dark core indirectly predicted environmentalism. Therefore, it is observed that social dominance orientation works as a mechanism that allows people with dark traits not to worry about the environment, exploiting it for their own benefit.

Resumo: O presente estudo objetivou verificar o papel mediador da orientação à dominância social na relação entre o núcleo da tríade sombria da personalidade e o ambientalismo. Participaram 305 pessoas com idades entre 18 e 77 anos (Midade = 26,4; DPidade = 11,25; 59,7 % mulheres). Os resultados indicaram que entre os 8 traços de personalidade analisados, considerando os modelos dos Cinco Grandes Fatores e da Tríade Sombria, apenas a psicopatia se correlacionou com ambientalismo, sendo que este se correlacionou moderadamente com a orientação à dominância social. Considerando que os três traços sombrios são talhados por déficits empáticos, baixa amabilidade e honestidade/humildade, testou-se o efeito do núcleo da tríade sombria da personalidade para a predição do ambientalismo, observando-se efeitos diretos. Contudo, tais efeitos diretos não se mantiveram estatisticamente significativos com a inclusão da orientação à dominância social, configurando uma mediação completa, posto que o núcleo da tríade sombria predisse indiretamente o ambientalismo. Logo, observa-se que a orientação à dominância social funciona como um mecanismo que possibilita pessoas com traços sombrios não se preocuparem com o meio ambiente, explorando-o em benefício próprio.

Abstract The Flowers and Ornamental Plant sector supports an extensive network of entrepreneurs, in all stages related to cultivation, transport and commercialization. In this aspect, there is a great demand for skilled labor, making this sector a source of employment and income generation in the regions covered. However, there is great interference on the commercialization of flowers and ornamental plants by the seasonality of demand, which is often related to festive dates, weather, among other factors. Thus, knowledge about seasonal demands allows the sector to develop a plan, directing efforts to offer products with greater demand in a given period. This study aimed to generate information, through a case study based on the analysis of commercialization data, and verify the seasonal demand on the commercialization of ornamental species in western São Paulo. There was an increase in the demand for chrysanthemum cuttings, both for the domestic and export markets, during the years 2019 and 2020, in addition to fluctuations in the demand for some cultivars of cuttings of chrysanthemum in one year compared to the other. Through the analysis, it is concluded that the seasonality of commercialization of ornamental plants in the West Region of São Paulo really occurs, especially between the 26th and 34th week of the year, with the purpose of serving the domestic market of chrysanthemums. This result allows planning the planting and harvesting time, as well as the definition of the best varieties to be cultivated in these periods.

Resumo O setor de Flores e Plantas Ornamentais apoia uma extensa rede de empreendedores, em todas as etapas relacionadas ao cultivo, transporte e comercialização. Neste aspecto, há uma grande demanda por mão-de-obra qualificada, tornando este setor fonte de emprego e geração de renda nas regiões abrangidas. Porém, há grande interferência na comercialização de flores e plantas ornamentais pela sazonalidade da demanda, que muitas vezes está relacionada a datas festivas, clima, entre outros fatores. Assim, o conhecimento sobre as demandas sazonais permite ao setor desenvolver um planejamento, direcionando esforços para oferecer produtos com maior demanda em determinado período. Este estudo teve como objetivo gerar informações, por meio de um estudo de caso baseado na análise de dados de comercialização, e verificar a demanda sazonal na comercialização de espécies ornamentais no oeste paulista. Houve aumento na demanda por mudas de crisântemo, tanto para o mercado interno quanto para exportação, durante os anos de 2019 e 2020, além de oscilações na demanda por algumas cultivares de mudas de crisântemo em um ano em relação ao outro. Através desta análise conclui-se que a sazonalidade da comercialização de plantas ornamentais na Região Oeste de São Paulo realmente ocorre, principalmente entre a 26ª e a 34ª semana do ano, com a finalidade de atender ao mercado interno de crisântemos. Este resultado permite planejar a época de plantio e colheita, bem como a definição das melhores variedades a serem cultivadas nestes períodos.

ABSTRACT Cordia trichotomais a native species with economic potential due to its wood quality. However, knowledge regarding the production of quality seedlings of the species is still incipient. Thus, the objective was to evaluate the use of agricultural residues as a substrate compound and the shading intensities in the nursery phase forCordia trichotomaseedlings production. Five substrate compositions were tested: S1 (80% CF-coconut fiber- and 20% CCC-carbonized coffee husks); S2 (60% FC and 40% CCC); S3 (80% FC and 20% CAC-carbonized rice husk); S4 (60% FC and 40% CAC); S5 (100% commercial substrate). Also, we tested four different shading levels: 0%; 30%; 50%;80%. The experiment was in a factorial design with a completely randomized design. At 180 days, we measured seedling height, stem diameter, shoot dry mass, and root system dry mass and calculated the robustness index and Dickson Quality Index. We observed that carbonized husks provided lower growth than the use of a commercial substrate in all analyzed variables. Furthermore, shading provided negative quadratic growth in the analyzed variables. Thus, it is recommended the use of commercial substrate and shading of 50% in seedlings of Cordia trichotoma

RESUMO Cordia trichotoma é uma espécie nativa que possui grande importância econômica devido à valorização da qualidade de sua madeira. No entanto, os conhecimentos quanto a produção de mudas de qualidade da espécie ainda são incipientes. Dessa forma, objetivou-se avaliar o uso de resíduos agrícolas como composto de substrato e as intensidades de sombreamento em fase de viveiro, para a produção de mudas de Cordia trichotoma. Foram testadas cinco composições de substrato: S1 (80% FC-fibra de coco- e 20% CCC-casca de café carbonizada); S2 (60% FC e 40% CCC); S3 (80% FC e 20% CAC-casca de arroz carbonizada); S4 (60% FC e 40% CAC); S5 (100% substrato comercial). E quatro diferentes níveis de sombreamento: 0%; 30%; 50%; 80%. O delineamento experimental foi inteiramente casualizado em esquema fatorial. Foram mensurados aos 180 dias, a altura das mudas, o diâmetro de coleto, a massa seca da parte aérea, a massa seca do sistema radicular e calculados o índice de robustez e o Índice de Qualidade de Dickson. Foi observado que o uso de cascas proporcionou crescimento inferior ao uso de substrato comercial, em todas as variáveis analisadas. Ademais, o sombreamento proporcionou comportamento quadrático negativo nas variáveis analisadas. Assim, recomenda-se a utilização de substrato comercial e de sombreamento de 50%, em mudas de Cordia trichotoma.

Abstract Objective To verify the performance of the Net Promoter Score (NPS) as a tool to assess parental satisfaction in pediatric intensive care units (PICUs). Methods The authors conducted an observational cross-sectional multicenter study in the PICUs of 5 hospitals in Brazil. Eligible participants were all parents or legal guardians of PICU-admitted children, aged 18 years or over. The NPS was administered together with the EMpowerment of PArents in THe Intensive Care (EMPATHIC-30), used as the gold standard, and a sociodemographic questionnaire. For analysis, the results were dichotomized into values greater than or equal to the median of the tests. The associations between the 2 tools were evaluated and the distribution of their results was compared. Results The parents or legal guardians of 78 PICU-admitted children were interviewed. Of the respondents, 85% were women and 62% were in a private hospital. The median NPS was 10 (IQR, 10-10), and the median EMPATHIC-30 score was 5.7 (IQR, 5.4-5.9). Compared with the gold standard, the NPS had a sensitivity of 100% at all cutoff points, except at cutoff 10, where the sensitivity was slightly lower (97.5%). As for specificity, NPS performance was poorer, with values ranging from 0% (NPS ≥ 5) to 47.4% (NPS = 10). Conclusions NPS proved to be a sensitive tool to assess parental satisfaction, but with poor ability to identify dissatisfied users in the sample.

Abstract This article presents a theoretical and numerical study of bolted sleeve connections with rectangular hollow sections (RHS) under axial tension and compression. The geometric form of a hollow section provides resistance for high axial loads, torsion and combines effects, spreading its utilization in truss systems. In this context, the sleeve connections proposed explore these characteristics of RHS and offer an attractive aesthetic appearance for the continuity of elements. The bolted sleeve connection with RHS is formed by two outer tubes connected by an inner tube and staggered bolts. Herein, a parametric study was developed for identification of the failure modes in the connection. Finite element models with different geometric parameters and number of bolts were created in commercial software. The width, depth and thickness of RHS tubes and diameter of bolts were variated. In the theoretical/numerical/parametric results, the yielding gross section failure, the fracture through the effective net area failure and the bearing failure were observed. These failure modes occurred in both outer and inner tubes. The load results were compared to determine the resistance capacity of sleeve connections. The theoretical formulations were evaluated for representation of the ultimate load of the failure modes. (RHS compression loads effects systems context elements Herein software width variated theoreticalnumericalparametric observed

ABSTRACT Chromium is present in the tannery sludges worldwide making it a problem for agriculture. This study aimed to evaluate whether humus functions as a chromium stabilizing agent when using tannery sludge in the substrate of conilon coffee seedlings (Coffea canephora) and to determine what effects there are on leaf development and anatomy. Treatments consisted of a fixed dose of tannery sludge (30% of volume) on substrates of conilon coffee seedlings with different proportions of humus and subsoil (T-10, T-20, T-30, T-40% of humus). Information for the evaluation of leaf anatomy and seedling development was collected at 180 days after the planting of cuttings. From the phenological point of view, the treatments that best promoted seedling quality were T-30 and T-40. However, the greater the amount of humus in the substrate the greater the absorption of chromium by plants, which directly affected the organization of epidermal cells and leaf mesophyll. In addition, intense cytoplasmic degradation, ultrastructural changes in chloroplasts and mitochondria, and an increase in autophagic vacuoles were observed. We conclude that increasing the amount of humus in substrate with tannery sludge provides higher quality coffee seedlings, despite promoting greater absorption of chromium by plants and the consequent major intracellular disturbances.

A dengue pode estar associada a variáveis de nível individual, como escolaridade, aumentando o risco de adoecimento. O objetivo deste trabalho é analisar as disparidades da mortalidade por dengue entre os menos e mais escolarizados no Brasil entre os anos de 2010 e 2018. Este é um estudo do tipo ecológico retrospectivo das diferenças na taxa de mortalidade por dengue entre menos e mais escolarizados no Brasil, através das taxas de mortalidade por dengue geral, por idade, sexo e Unidade Federativa (UF). Um procedimento de bootstrap e imputação múltipla para a variável escolaridade foram implementados de modo a considerar a estrutura multinível em cada UF dos dados ao longo dos anos. Para cada banco agregado gerado, foi ajustado um modelo de Poisson multinível. A melhoria na escolaridade da população brasileira não refletiu na diminuição da mortalidade por dengue. Houve um aumento na taxa de mortalidade por dengue no Brasil e um crescimento da diferença de taxas de mortalidade entre menos e mais escolarizados. Independentemente do processo de imputação, os resultados mostraram maiores taxas de mortalidade por dengue entre os menos escolarizados. A baixa escolaridade afetou de forma mais pronunciada os mais jovens.

El dengue puede estar asociado a variables de nivel individual como la educación, aumentando el riesgo de enfermarse. El objetivo de este trabajo es analizar las disparidades de la mortalidad por dengue entre las personas con menor y mayor nivel educativo en Brasil entre los años 2010 y 2018. Estudio del tipo ecológico retrospectivo de las diferencias en la tasa de mortalidad por dengue entre las personas con menor y mayor nivel educativo en Brasil, a través de las tasas de mortalidad por dengue general, por edad, género y Unidad Federativa (UF). Se implementó un procedimiento de bootstrap y de imputación múltiple para la variable de educación para considerar la estructura multinivel en cada UF de los datos a lo largo de los años. Para cada banco agregado generado, se ajustó un modelo de Poisson multinivel. La mejora en la educación de la población brasileña no se reflejó en la disminución de la mortalidad por dengue. Hubo un aumento en la tasa de mortalidad por dengue en Brasil y un crecimiento de la diferencia en las tasas de mortalidad entre las personas con menor y mayor nivel educativo. Independientemente del proceso de imputación, los resultados mostraron mayores tasas de mortalidad por dengue entre los menos educados. El bajo nivel de educación afectó de forma más pronunciada a los más jóvenes.

Dengue may be associated with individual level variables, such as schooling, increasing the risk of illness. The objective of this study is to analyze the disparities in dengue mortality among the least and the most educated in Brazil, from 2010 to 2018. This is a retrospective ecological study of the differences in the mortality rate due to dengue between the less and the more educated people in Brazil, according to the mortality rates due to general dengue, by age, sex, and Federative Unit (UF). A bootstrap and multiple imputation procedure for the variable schooling was implemented to consider the multilevel structure of the data from each UF over the years. For each aggregate bank generated, a multilevel Poisson model was adjusted. The improvement in the education level of the Brazilian population did not reflect on the decrease in mortality from dengue. There was an increase in the mortality rate from dengue in Brazil and an increase in the difference in mortality rates between less and more educated. Regardless of the imputation process, the results showed higher mortality rates from dengue among the less educated. Low schooling affected younger people more pronouncedly.

Abstract Objective: To synthesize the elements of vulnerability to Covid-19 among the adult population. Method: Integrative review carried out between August and November 2020, with defined criteria of inclusion, exclusion and retrieving of studies. Data were extracted and synthesized by means of the categorical thematic analysis, and systematized by the vulnerability concept. Most relevant results: From 2247 articles retrieved, 70 original studies were selected, fully read and assessed. Four vulnerability markers emerged: Chronic Health Conditions; Daily Life Experiences; Social Insertion; and Health Services and Actions. Main conclusions: The identified vulnerability markers may support health professionals in the identification of patients with less autonomy and resources for self-care and protection against Covid-19. They may also foster the adoption of health and intersectoral interventions to protect patients against Covid-19, as well as the reduction of SARS-Cov-2 transmission rates within communities and other settings, with significant decline in the impact of the virus on society.

Resumo Sintetizar os elementos de vulnerabilidade da população adulta para a Covid-19. Método: Revisão integrativa, realizada entre agosto e novembro de 2020, com critérios definidos de inclusão, exclusão e recuperação dos estudos, de extração e síntese dos dados, pela análise temática categorial e sistematização pela vulnerabilidade. Resultados mais relevantes: De 2.247 artigos recuperados, foram selecionados e avaliados 70 estudos originais com leitura integral. Emergiram da análise temática quatro marcadores de vulnerabilidade: Condições crônicas de saúde; Experiências de vida e cotidiano; Inserção social; e Serviços e ações de saúde. Principais conclusões: Os marcadores de vulnerabilidade identificados poderão subsidiar os profissionais de saúde na identificação dos pacientes com menos autonomia e recursos para o autocuidado e proteção contra a Covid-19, além da adoção de intervenções em saúde e intersetoriais que as protejam mais contra a infecção por Covid-19, diminuindo as taxas de transmissão do SARS-Cov-2 dentro das comunidades e outros espaços, com a redução significativa do impacto do vírus sobre a sociedade.

ABSTRACT Introduction: Surface treatment is an important technique to increase adhesion between implants and bones, improving its mechanical characteristics and consequently the patient’s comfort. Objectives: Ni-Cr alloys were the object of study in this work, with the purpose of analyzing and evaluating the effect of thin films deposition of titanium nitride via plasma, on its surface and comparing with cathodic cage (CC) and hollow cathode (HC) methods, for dental applications. Methods: Eighteen samples were prepared and the experiment was conducted in two steps: the pre-sputtering (1h, 350 °C, gases: Ar and H) and sputtering (4h, 450 °C, gases: Ar, Ni, and H). To characterize and compare the samples with those of reference, the Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), Vickers Microhardness and wettability tests were used. Results: The results presented by SEM showed that during the surface treatment using CC, voids were formed, and using HC, the samples showed a more homogenous behavior. In microhardness tests, using a 25gf load, it was possible to observe that the HC method allowed an increase of 87% when compared to the reference and treated samples. Significance: Lastly, it can be concluded that both methods are suitable for Ni-Cr alloy surface treatment, and the HC technique, a method already used by dental professionals, presents better results due to the formation of a thicker film layer.

Abstract: Introduction: Distance learning emerged as an emergency tool used in Higher Education during the COVID-19 pandemic. These circumstances led to the increased use of Information and Communication Technologies (ICTs) for teaching and learning in Medicine courses. Objective: To conduct an integrative review to clarify the main positive and negative aspects found in the exercise of medical education in these atypical conditions. Method: Articles were searched on the following databases: Virtual Health Library (VHL), Embase, Education Resources Information Center (ERIC), Medline (via PubMed), Scopus and Web of Science Result: At the end of the screening and selection processes, 69 articles were included, from which information was extracted regarding the characteristics, positive and negative aspects of each remote medical teaching experience offered during the pandemic. Among the main positive aspects, we highlight the positive evaluation of the curricular component by the students, greater student autonomy, greater participation and communication among students and the absence of any learning deficit. The main negative points include the suspension of practical classes, complications arising from the use of technologies (connectivity, training and organization) and lack of social contact. Conclusion: It is observed that student autonomy and self-discipline is a crucial factor in taking full advantage of the distance learning approach, and perhaps the classic face-to-face student was not prepared for such a sudden change. Still, it is clear that, due to the urgency of implementing this new form of learning, distance learning has not had enough time to mature and be perfected to the point of being considered a medical education strategy applicable in the long term. Distance learning was crucial for the continued training of new doctors for an extended period of time. However, it needs to be reassessed and improved as a pedagogical strategy that uses ICTs for medical education.

Resumo: Introdução: O ensino remoto surgiu como ferramenta emergencial no processo de educação superior durante a pandemia da Covid-19. Nesse cenário, amplia-se a possibilidade de ensinar e aprender por meio das tecnologias da informação e comunicação (TIC) nos cursos de Medicina. Objetivo: Este estudo teve como objetivo realizar uma revisão integrativa que esclareça os principais aspectos positivos e negativos encontrados no exercício do ensino médico, nessas condições atípicas. Método: A busca dos artigos se deu nas seguintes bases: Biblioteca Virtual em Saúde (BVS), Embase, Education Resources Information Center (ERIC), Medline (via PubMed), Scopus e Web of Science. Resultado: Ao final dos processos de triagem e seleção, incluíram-se 69 artigos, dos quais foram extraídas informações quanto às características dos aspectos positivos e negativos de cada experiência de ensino remoto médico ofertado nesse período pandêmico. Entre os principais aspectos positivos, destacam-se a avaliação positiva do componente curricular pelos estudantes, a maior autonomia do aluno, a maior participação e comunicação entre os alunos, e a ausência de déficit de aprendizado. Entre os principais pontos negativos, observam-se a suspensão das aulas práticas, as complicações decorrentes do uso das tecnologias (conectividade, capacitação e organização) e a ausência de contato social. Conclusão: Observa-se que a autonomia e a autodisciplina discentes são fatores cruciais para o aproveitamento pleno de abordagem de aprendizagem remotamente, e talvez o aluno presencial clássico não estivesse preparado para tal mudança brusca. Ainda, percebe-se que, pela urgência de implantação dessa nova forma de aprendizagem, o ensino remoto não tenha tido tempo e maturidade o suficiente para que fosse aperfeiçoado ao ponto de ser considerado uma estratégia de educação médica aplicável em longo prazo. O ensino remoto foi crucial para que a formação de novos médicos não fosse descontinuada por um período de tempo tão extenso. Porém, o ensino remoto precisa ser reavaliado e aperfeiçoado como estratégia pedagógica que utiliza TIC para o ensino médico.

ABSTRACT. The use of multispectral images has great potential to assess seed quality and represents a significant technological advance in the search for fast and non-destructive analysis techniques. However, the devices currently available are expensive. Thus, this study aimed to propose a low-cost method for acquisition and processing of multispectral images of soybean seeds and to evaluate their potential for rapid determination of seed physiological potential. The study was conducted in three steps: implementation of the multispectral image acquisition system, development of an algorithm for automatic image processing, and evaluation of the relationship between the data obtained through image analysis and the results of standard tests used to evaluate seed physiological potential. A total of 43 variables were assessed, eight related to seed physiological potential (germination and vigor) and 35 obtained from the analysis of the multispectral images. Of the variables obtained from multispectral images, 21 were related to pixel values in the images in the different bands evaluated (green, red, and infrared) and 14 associated with seed morphometric characteristics. The proposed system is efficient in obtaining multispectral images and the algorithm developed was efficient to extract morphometric characteristics and pixel information from the images. The parameters obtained from the NIR spectrum region showed a good relationship with the physiological potential of soybean seeds.

Abstract This study aimed to evaluate the pathways that explain the association between race/skin color and edentulism in elderly Brazilians. This was a cross-sectional study using data from participants aged 60 years or older from the 2019 Brazilian National Health Survey, a nationally representative population-based sample. Data were obtained by a structured interview and participants were classified as edentulous if they reported having lost all natural teeth. Information on race, socioeconomic level, behavioral aspects, psychosocial aspects, and access to dental care was collected by interviewers using a questionnaire. The pathways between race/skin color and edentulism were analyzed using structural equation modeling. The final sample of the study included 22,357 participants. Most participants were white (51.5%; 95% confidence interval [CI]: 50.3–52.6), and 36.8% (95%CI: 35.7–37.9) were edentulous. Race/skin color was indirectly associated with edentulism via enabling factors. These findings suggest that socioeconomic inequalities are key in explaining racial inequalities in edentulism among Brazilian older adults.