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[SciELO Preprints] - Guidelines on the Diagnosis and Treatment of Hypertrophic Cardiomyopathy – 2024
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Fernandes, Fabio Simões, Marcus V. Correia, Edileide de Barros Marcondes-Braga, Fabiana G. Coelho-Filho, Otavio Rizzi Mesquita, Cláudio Tinoco Mathias-Junior, Wilson Rochitte, Carlos Eduardo Ramires, Felix José Alvarez Alves, Silvia Marinho Martins Montera, Marcelo Westerlund Lopes, Renato Delascio Oliveira-Junior, Mucio Tavares Scolari, Fernando L. Avila, Walkiria Samuel Canesin, Manoel Fernandes Bacal, Fernando Bocchi, Edimar Alcides Moura, Lídia Ana Zytynski Saad, Eduardo Benchimol Scanavacca, Mauricio I. Valdigem, Bruno Pereira Cano , Manuel Nicolas Abizaid , Alexandre Ribeiro, Henrique Barbosa Lemos-Neto, Pedro Alves Ribeiro, Gustavo Calado de Aguiar Jatene, Fabio Biscegli Dias, Ricardo Ribeiro Beck-da-Silva, Luis Rohde, Luis Eduardo P. Bittencourt, Marcelo Imbroinise Pereira, Alexandre Krieger, José Eduardo Villacorta, Humberto Martins, Wolney de Andrade Figueiredo-Neto, José Albuquerque de Cardoso , Juliano Novaes Pastore, Carlos Alberto Jatene, Ieda Biscegli Tanaka, Ana Cristina Sayuri Hotta, Viviane Tiemi Romano, Minna Moreira Dias Albuquerque, Denilson Campos de Mourilhe-Rocha, Ricardo Hajjar, Ludhmila Abrahão Brito, Fabio Sandoli de Caramelli , Bruno Calderaro, Daniela Farsky, Pedro Silvio Colafranceschi , Alexandre Siciliano Pinto, Ibraim Masciarelli Vieira , Marcelo Luiz Campos Danzmann, Luiz Claudio Barberato , Silvio Henrique Mady, Charles Martinelli-Filho, Martino Torbey , Ana Flavia Malheiros Schwartzmann, Pedro Vellosa Macedo, Ariane Vieira Scarlatelli Ferreira , Silvia Moreira Ayub Schmidt, Andre Melo , Marcelo Dantas Tavares de Lima-Filho, Moysés Oliveira Sposito, Andrei C. Brito, Flavio de Souza Biolo, Andreia Madrini-Junior, Vagner Rizk, Stéphanie Itala Mesquita, Evandro Tinoco

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Publication date: 2024-04-08

Abstract: Pt Es En

A cardiomiopatia hipertrófica (CMH) é uma forma de doença do músculo cardíaco de causa genética, caracterizada pela hipertrofia das paredes ventriculares. O diagnóstico requer detecção por métodos de imagem (Ecocardiograma ou Ressonância Magnética Cardíaca) de qualquer segmento da parede do ventrículo esquerdo com espessura > 15 mm, sem outra causa provável. A análise genética permite identificar mutações de genes codificantes de diferentes estruturas do sarcômero responsáveis pelo desenvolvimento da CMH em cerca de 60% dos casos, permitindo o rastreio de familiares e aconselhamento genético, como parte importante do manejo dos pacientes e familiares. Vários conceitos sobre a CMH foram recentemente revistos, incluindo sua prevalência de 1 em 250 indivíduos, não sendo, portanto, uma doença rara, mas subdiagnosticada. A vasta maioria dos pacientes é assintomática. Naqueles sintomáticos, a obstrução do trato de saída do ventrículo esquerdo (OTSVE) é o principal distúrbio responsável pelos sintomas, devendo-se investigar a sua presença em todos os casos. Naqueles em que o ecocardiograma em repouso ou com Manobra de Valsalva não detecta gradiente intraventricular significativo (> 30 mmHg), devem ser submetidos à ecocardiografia com esforço físico para detecção da OTSVE.   Pacientes com sintomas limitantes e grave OTSVE, refratários ao uso de betabloqueadores e verapamil, devem receber terapias de redução septal ou uso de novas drogas inibidoras da miosina cardíaca. Por fim, os pacientes adequadamente identificados com risco aumentado de morta súbita podem receber medida profilática com implante de cardiodesfibrilador implantável (CDI).

La miocardiopatía hipertrófica (MCH) es una forma de enfermedad cardíaca de origen genético, caracterizada por el engrosamiento de las paredes ventriculares. El diagnóstico requiere la detección mediante métodos de imagen (Ecocardiograma o Resonancia Magnética Cardíaca) que muestren algún segmento de la pared ventricular izquierda con un grosor > 15 mm, sin otra causa probable. El análisis genético permite identificar mutaciones en genes que codifican diferentes estructuras del sarcómero responsables del desarrollo de la MCH en aproximadamente el 60% de los casos, lo que permite el tamizaje de familiares y el asesoramiento genético, como parte importante del manejo de pacientes y familiares. Varios conceptos sobre la MCH han sido revisados recientemente, incluida su prevalencia de 1 entre 250 individuos, por lo tanto, no es una enfermedad rara, sino subdiagnosticada. La gran mayoría de los pacientes son asintomáticos. En los casos sintomáticos, la obstrucción del tracto de salida ventricular izquierdo (TSVI) es el trastorno principal responsable de los síntomas, y su presencia debe investigarse en todos los casos. En aquellos en los que el ecocardiograma en reposo o la maniobra de Valsalva no detecta un gradiente intraventricular significativo (> 30 mmHg), deben someterse a ecocardiografía de esfuerzo para detectar la obstrucción del TSVI. Los pacientes con síntomas limitantes y obstrucción grave del TSVI, refractarios al uso de betabloqueantes y verapamilo, deben recibir terapias de reducción septal o usar nuevos medicamentos inhibidores de la miosina cardíaca. Finalmente, los pacientes adecuadamente identificados con un riesgo aumentado de muerte súbita pueden recibir medidas profilácticas con el implante de un cardioversor-desfibrilador implantable (CDI).

Hypertrophic cardiomyopathy (HCM) is a form of genetically caused heart muscle disease, characterized by the thickening of the ventricular walls. Diagnosis requires detection through imaging methods (Echocardiogram or Cardiac Magnetic Resonance) showing any segment of the left ventricular wall with a thickness > 15 mm, without any other probable cause. Genetic analysis allows the identification of mutations in genes encoding different structures of the sarcomere responsible for the development of HCM in about 60% of cases, enabling screening of family members and genetic counseling, as an important part of patient and family management. Several concepts about HCM have recently been reviewed, including its prevalence of 1 in 250 individuals, hence not a rare but rather underdiagnosed disease. The vast majority of patients are asymptomatic. In symptomatic cases, obstruction of the left ventricular outflow tract (LVOT) is the primary disorder responsible for symptoms, and its presence should be investigated in all cases. In those where resting echocardiogram or Valsalva maneuver does not detect significant intraventricular gradient (> 30 mmHg), they should undergo stress echocardiography to detect LVOT obstruction. Patients with limiting symptoms and severe LVOT obstruction, refractory to beta-blockers and verapamil, should receive septal reduction therapies or use new drugs inhibiting cardiac myosin. Finally, appropriately identified patients at increased risk of sudden death may receive prophylactic measure with implantable cardioverter-defibrillator (ICD) implantation.

https://doi.org/10.1590/SciELOPreprints.8394

IL-1β and IL-17 in cutaneous lupus erythematous skin biopsies: could immunohistochemicals indicate a tendency towards systemic involvement?
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Lovato, Barbara Hartung

; Fogagnolo, Leticia

; Souza, Elemir Macedo de

; Silva, Larissa Juliana Batista da

; Velho, Paulo Eduardo Neves Ferreira

; Cintra, Maria Leticia

; Teixeira, Fernanda

Anais Brasileiros de Dermatologia

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jan 2024, Volume 99 N. 1 Pages 66 - 71

Abstract: En | Text: En | PDF: En

Abstract Background: Only a fraction of patients with cutaneous lupus erythematosus (CLE) will eventually progress toward systemic disease (SLE). Objective: To find inflammatory biomarkers which could predict the progression of cutaneous lupus erythematosus (CLE) into systemic lupus erythematosus (SLE) using immunohistochemical (IHC) assays. Methods: Immunohistochemical markers for cytotoxic, inflammatory, and anti-inflammatory responses and morphometric methods were applied to routine paraffin sections of skin biopsies, taken from lesions of 59 patients with discoid lupus, subacute lupus, and lupus tumidus. For the diagnosis of SLE, patients were classified by both the American College of Rheumatology (ACR-82) and the Systemic Lupus International Collaborating Clinics (SLICC-12) systems. Results: Skin samples from CLE/SLE +patients presented higher expression of IL-1β (ARC-82: p = 0.024; SLICC-12: p = 0.0143) and a significantly higher number of cells marked with granzyme B and perforin (ARC: p = 0.0097; SLICC-12: p = 0.0148). Biopsies from CLE/SLE- individuals had higher expression of IL-17 (ARC-82: p = 0.0003; SLICC-12: p = 0.0351) and presented a positive correlation between the density of granzyme A+and FoxP3+ cells (ARC-82: p = 0.0257; SLICC-12: p = 0.0285) and CD8+ cells (ARC-82: p = 0.0075; SLICC-12: p = 0.0102), as well as between granulysin-positive and CD8+ cells (ARC-82: p = 0.0024; SLICC-12: p = 0.0116). Study limitations: Patients were evaluated at a specific point in their evolution and according to the presence or not of systemic disease. The authors cannot predict how many more, from each group, would have evolved towards SLE in the following years. Conclusions: In this cohort, immunohistochemical findings suggested that patients with a tendency to systemic disease will show strong reactivity for IL-1β, while those with purely cutaneous involvement will tend to express IL-17 more intensely.

https://doi.org/10.1016/j.abd.2023.02.007

Spatial analysis of hospital-related mortality due to COVID-19 among children and adolescents in Brazil
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Costa, Silmery da Silva Brito

; Branco, Maria dos Remédios Freitas Carvalho

; Pereira, Andressa Rocha

; Costa, Elisa Miranda

; Araújo, Mayra Sharlenne Moraes

; Oliveira, Daniel Cavalcante de

; Oliveira, Bruno Luciano Carneiro Alves de

; Rangel, Maurício Eduardo Salgado

; Tonello, Aline Sampieri

; Lopes, Denise Ailine Monteiro

; Pinheiro, Vanessa Vieira

; Câmara, Ana Patricia Barros

; Santos, Alcione Miranda dos

; Vasconcelos, Vitor Vieira

Ciência & Saúde Coletiva

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2024, Volume 29 N. 1 elocation e19892022

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo Objetivou-se realizar uma análise espacial da taxa de mortalidade hospitalar (TMH) por síndrome respiratória aguda grave (SRAG) atribuída à COVID-19 em crianças e adolescentes no Brasil no período de 2020 a 2021. Utilizou-se o método de cluster para agrupar as unidades federativas (UFs) com base na TMH. Em 2020, clusters com altas TMHs foram formados por UFs Norte/Nordeste. Em 2021, houve redução na TMH. Os clusters com maiores taxas permaneceram na região N/NE. Diferenças regionais foram observadas nas TMHs. Os achados podem refletir as desigualdades sociais e o acesso à atenção hospitalar, principalmente na faixa etária de menores de 1 ano pela gravidade da doença neste grupo.

Abstract The objective was to perform a spatial analysis of the hospital mortality rate (HMR) due to severe acute respiratory syndrome (SARS) attributed to COVID-19 among children and adolescents in Brazil from 2020 to 2021. A cluster method was used to group federal units (FUs) based on HMR. In 2020, clusters with high HMRs were formed by north/northeast FUs. In 2021, there was a reduction in HMR. Clusters with higher rates remained in the N/NE region. Regional differences were observed in the HMR. The findings may reflect social inequalities and access to hospital care, especially in the under 1-year-old age group due to the severity of the disease in this group.

https://doi.org/10.1590/1413-81232024291.19892022

Spatial analysis of hospital-related mortality due to COVID-19 among children and adolescents in Brazil
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Costa, Silmery da Silva Brito

; Branco, Maria dos Remédios Freitas Carvalho

; Pereira, Andressa Rocha

; Costa, Elisa Miranda

; Araújo, Mayra Sharlenne Moraes

; Oliveira, Daniel Cavalcante de

; Oliveira, Bruno Luciano Carneiro Alves de

; Rangel, Maurício Eduardo Salgado

; Tonello, Aline Sampieri

; Lopes, Denise Ailine Monteiro

; Pinheiro, Vanessa Vieira

; Câmara, Ana Patricia Barros

; Santos, Alcione Miranda dos

; Vasconcelos, Vitor Vieira

Ciência & Saúde Coletiva

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2024, Volume 29 N. 1 elocation e19892022

Abstract: En Pt | Text: En Pt | PDF: En | PDF: Pt

https://doi.org/10.1590/1413-81232024291.19892022

Spatial analysis of hospital-related mortality due to COVID-19 among children and adolescents in Brazil
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Costa, Silmery da Silva Brito

; Branco, Maria dos Remédios Freitas Carvalho

; Pereira, Andressa Rocha

; Costa, Elisa Miranda

; Araújo, Mayra Sharlenne Moraes

; Oliveira, Daniel Cavalcante de

; Oliveira, Bruno Luciano Carneiro Alves de

; Rangel, Maurício Eduardo Salgado

; Tonello, Aline Sampieri

; Lopes, Denise Ailine Monteiro

; Pinheiro, Vanessa Vieira

; Câmara, Ana Patricia Barros

; Santos, Alcione Miranda dos

; Vasconcelos, Vitor Vieira

Ciência & Saúde Coletiva

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2024, Volume 29 N. 1 elocation e19892022

Abstract: En Pt | Text: En Pt | PDF: En | PDF: Pt

https://doi.org/10.1590/1413-81232024291.19892022

Construction and validation of the community health workers perception questionnaire on conditions amenable to physiotherapy in primary health care
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Silva, Gabriel Brighenti Menezes

; Barbosa, Samara Maria Neves

; Figueiredo, Eduardo Augusto Barbosa

; Costa, Henrique Silveira

; Bastone, Alessandra de Carvalho

; Santos, Juliana Nunes

Fisioterapia em Movimento

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2024, Volume 37 elocation e37101

Abstract: En Pt | Text: En Pt | PDF: En | PDF: Pt

Abstract Introduction Community health workers, like the physiotherapist, perform essential functions in primary health care, being an important element in the transformation of public policies. There are no reported studies investigating the knowledge of community health workers about health conditions amenable to physiotherapy intervention in primary health care. Objective To construct a questionnaire to investigate the perception of community health workers about health conditions that could be remedied by physiotherapy intervention in primary health care. Methods This was a methodological study in which it was initially an analysis matrix with the aim of encompassing the ideas contemplated in the questionnaire. To construct the instrument, a literature review was carried out, and health conditions treatable with physiotherapy in primary health care were chosen. To validate the content and appearance of the items, twelve physiotherapists specialized in primary health care judged the suitability of the items contained. The content validity index was used to determine the degree of agreement during the response analysis process. Subsequently, a semantic analysis was carried out through the understanding of the items by 15 community health workers. In the validation stage, two rounds of evaluation were carried out. Adjustments were made to 17 questions. Results The study investigated a questionnaire with 20 questions containing hypothetical situations of home visits, in which the resident's situation could or could not constitute a health risk amenable to physiotherapeutic intervention. Conclusion The community health workers perception instrument on health conditions amenable to physiotherapy intervention in primary health care proved to be valid for use in this context. The use of the instrument may contribute to the development of community health worker training programs, with the aim of facilitating team communication.

Resumo Introdução O Agente Comunitário de Saúde (ACS), assim como o fisioterapeuta, desencadeia funções fundamentais na Atenção Primária à Saúde (APS), sendo ele-mento importante na transformação de políticas públicas. Inexistem estudos que investiguem o conhecimento dos ACS sobre as condições de saúde sensíveis à inter-venção da fisioterapia na APS. Objetivo Construir um questionário de investigação da percepção dos ACS sobre as condições de saúde sensíveis à intervenção da fisioterapia na APS. Métodos Trata-se de um estudo metodológico no qual, inicialmente, construiu-se uma matriz de análise com o intuito de englobar as ideias contempladas no questionário. Para a construção do instrumento, realizou-se uma revisão da literatura, sendo eleitas condições de saúde sensíveis à intervenção da fisioterapia na APS. Para a validação de conteúdo e aparente dos itens, 12 fisioterapeutas especialistas em APS julgaram a adequação dos itens contidos. Utilizou-se o índice de validade de conteúdo para verificar o grau de concordância durante o processo de análise das respos-tas. Posteriormente, realizou-se análise semântica por meio da compreensão dos itens por 15 ACS. Na etapa de validação, foram realizadas duas rodadas de avaliação. Foram feitos ajustes em 17 questões. Resultados O estudo resultou em um questionário com 20 questões contendo situações hipotéticas de visitas domiciliares, cuja situação do morador poderia ou não configurar um risco à saúde sensível à intervenção fisioterapêutica. Conclusão O instrumento de percepção dos ACS sobre as condições de saúde sensíveis à intervenção da fisioterapia na APS mostrou-se válido para ser utilizado no contexto da APS. A utilização do instrumento poderá contribuir na elaboração de programas de capacitação dos ACS, com o intuito de facilitar a comunicação da equipe.

https://doi.org/10.1590/fm.2024.37101

The dynamics of phosphorus, potassium and sulphur in the arable layer of the soil as a function of fertilisation
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Silva, Eduardo Vaz da

; Bianchini, Aloísio

; Silva, Wininton Mendes da

; Bocuti, Edwaldo Dias

; Amorim, Ricardo Santos Silva

; Raimo, Luis Augusto Di Loreto Di

Revista Ciência Agronômica

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2024, Volume 55 elocation e20217944

Abstract: En | Text: En | PDF: En

ABSTRACT The method of applying fertiliser to the soil affects grain productivity. The aim of this study was to determine the dynamics of phosphorus, potassium and sulphur in the arable layer of the soil during the third year of agricultural production, as a function of the method of application. The study took place in the district of Diamantino, Mato Grosso, in an area of soybean-maize succession under minimum tillage. Five treatments were tested in a randomised block design: no phosphorus or potassium (P0-K0); broadcast phosphorus and in-furrow potassium (Pb-Kf); in-furrow phosphorus and potassium (Pf-Kf); in-furrow phosphorus and broadcast potassium (Pf-Kb); broadcast phosphorus and potassium (Pb-Kb). When the soybeans reached physiological maturity, soil samples were collected from the 0-0.05, 0.05-0.10, 0.10-0.15 and 0.15-0.20 m layers for analysis of the pH, and P, K, S and organic matter content. The soil attributes were submitted to analysis of variance and Tukey’s test at 5%, and the nutrient dynamics in the soil profile were analysed by regression. The in-furrow application of phosphorus (Pf-Kb and Pf-Kf) improved P availability in the 0-0.05 m layer by 69.12% and 46.54% compared to the Pb-Kb treatment, by 73.93% and 50.71% compared to the Pb-Kf treatment, and by 136.77% and 105.16% compared to the P0-K0 treatment. The in-furrow application of phosphate fertiliser proved to be more effective in terms of phosphorus availability in the soil. The residual effect of broadcasting phosphate fertiliser on phosphorus availability in the soil can be seen from the third year of production onwards.

https://doi.org/10.5935/1806-6690.20240017

New insights into a poorly known parasite, Dero lutzi (Oligochaeta: Naididae), associated with tree frogs of the genus Scinax: morphological evaluation and genotypic data
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Silva, Isabela Caroline Oliveira da

; Soares, Priscilla

; Malta, Lennon

; Paiva, Fernando

; Ferreira, Vanda Lúcia

; Oliveira, Carina Elisei de

; Tavares, Luiz Eduardo Roland

Revista Brasileira de Parasitologia Veterinária

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2024, Volume 33 N. 1 elocation e015323

Abstract: En Pt | Text: En Pt | PDF: En | PDF: Pt

Abstract The oligochaete Dero lutzi follows a life strategy that alternates between free-living periods in aquatic environments and endoparasitic phases. Most occurrences of D. lutzi in anurans are reported in species with arboreal habits, with studies limited to the recording of the oligochaete’s presence in the host. Our study recovered specimens of D. lutzi from the tree frogs Scinax fuscovarius and Scinax. nasicus. We performed a morphological assessment of the parasite using light microscopy, for the first time, scanning electron microscopy. Molecular characterization of D. lutzi was carried out using the mitochondrial gene 16S rRNA and the nuclear gene 28S rRNA. Additionally, a phylogenetic tree was constructed to assess the species´position in relation to other group members. In our results, we confirmed the phenotypic morphological characteristics of the endoparasitic phase of D. lutzi. We also presented its phylogenetic position with other oligochaetes in the group, demonstrating the proximity between the endoparasite D. lutzi and the free-living oligochaete D. superterrenus.

Resumo O oligoqueta Dero lutzi possui uma estratégia de vida que alterna entre períodos de vida livre em ambientes aquáticos e fases endoparasitárias. A maioria das ocorrências de D. lutzi em anfíbios anuros é relatada em espécies com hábitos arborícolas, com estudos que se restringem a registros da presença do oligoqueta no hospedeiro. Este estudo recuperou espécimes de D. lutzi das pererecas Scinax fuscovarius e Scinax nasicus. Foi realizada uma avaliação morfológica do parasito por microscopia de luz e, pela primeira vez, por microscopia eletrônica de varredura. A caracterização molecular de D. lutzi foi realizada com o gene mitocondrial 16S rRNA e o gene nuclear 28S rRNA. Além disso, uma árvore filogenética foi construída para avaliar a posição da espécie em relação a outros membros do grupo. Os resultados deste estudo confirmaram as características morfológicas fenotípicas da fase endoparasitária de D. lutzi. Também foi apresentada sua posição filogenética com outros oligoquetas do grupo, o que permitiu demonstrar a proximidade entre o endoparasito D. lutzi e o oligoqueta de vida livre D. superterrenus.

https://doi.org/10.1590/s1984-29612024005

Traveling Wave-Based Fault Location for Gas Insulated Substations
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Marcelo, Diogo Gonzaga

; Silva, Clailton Leopoldo da

; Martins, Rafael

; Castioni, Júlio Cezar Oliveira

; Lambert-Torres, Germano

; Ribeiro Junior, Ronny Francis

; Campos, Mateus Mendes

; Areias, Isac Antônio dos Santos

; Assunção, Frederico de Oliveira

; Silva, Luiz Eduardo Borges da

Brazilian Archives of Biology and Technology

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2024, Volume 67 elocation e24230514

Abstract: En | Text: En | PDF: En

Abstract With the growing demand for solutions to prevent and resolve faults in gas-insulated substations that affect the operation of the electrical system, a fault simulation laboratory for gas-insulated substations was developed to develop solutions for monitoring and locating these faults. The laboratory is composed of instruments for a fault location system based on traveling wave theory. The laboratory also has computational programs for fault simulation control and signal acquisition, in addition to having tools to analyze the data. The results were obtained through tests carried out that confirmed the laboratory's ability to simulate the operation of faults in gas-insulated substations, which allowed demonstrating the capacity of the fault location system using the theory of traveling waves.

https://doi.org/10.1590/1678-4324-2024230514

10.

Welding parameters process study of non-metallic expansion joints polymeric composite
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Manfrinato, Marcos Dorigão

; Leite, Eduardo de Campos

; Pavani, Rafael Roberto

; Pereira, Henrique Boschetti

; Silva, Lucas Camargo Soares Carvalho da

; Rossino, Luciana Sgarbi

Polímeros

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2024, Volume 34 N. 1 elocation e20240002

Abstract: En | Text: En | PDF: En

Abstract Polymeric composite materials, presenting a practical solution for sealing non-metallic expansion joints under extreme conditions such as high temperatures and harsh chemical and physical abrasion, were investigated in this scientific study to discern the impact of welding parameters on their degradation and properties. The study entailed the bonding of polymeric composite blankets through hot plate pressing with a PTFE film, encompassing variations in temperature, duration, and load application. The findings elucidated that lower temperatures and shorter processing times failed to achieve optimal blanket adhesion, while higher temperatures led to material degradation, subsequently diminishing the mechanical strength of the welded joint. In contrast, extended processing times and the application of load during welding demonstrated a positive correlation, enhancing the mechanical strength of the joint by ameliorating interfacial adhesion. This research underscores the critical significance of carefully selecting welding parameters to ensure the peak performance and durability of polymeric composite structures.

https://doi.org/10.1590/0104-1428.20230004

11.

Development of a Low-Energy Mobile Current Waveform Impulse Generator for Application in Low Voltage Surge Arresters
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Zacarias, Tiago Goncalves

; Martins, Rafael

; Xavier, Carlos Eduardo

; Castioni, Júlio Cezar Oliveira

; Lambert-Torres, Germano

; Assunção, Frederico de Oliveira

; Oliveira, Levy Ely de Lacerda de

; Teixeira, Carlos Eduardo

; Silva, Luiz Eduardo Borges da

; Bonaldi, Erik Leandro

Brazilian Archives of Biology and Technology

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2024, Volume 67 elocation e24230669

Abstract: En | Text: En | PDF: En

Abstract Surge arresters are at the forefront of protection against voltage surges. The loss of the protective effect of surge arresters imposes accidents and unplanned shutdowns on the power system. It directly affects the interruption of power supplies and imposes fines on service providers. Monitoring and diagnostics in the lightning rod field require studies and work that present the degradation behaviour of surge arresters to help develop and improve existing techniques. This paper presents the development of a laboratory with a low-energy, mobile current waveform impulse generator. It allows for conducting aging tests by applying discharges to low-voltage zinc oxide surge arresters used in the energy distribution sector. Samples of surge arresters were subjected to the discharges produced by the developed generator, and they exhibited degradation, thus showing asymmetry between the positive and negative half-cycles of leakage current.

https://doi.org/10.1590/1678-4324-2024230669

12.

Spatial analysis of hospital-related mortality due to COVID-19 among children and adolescents in Brazil
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Costa, Silmery da Silva Brito

; Branco, Maria dos Remédios Freitas Carvalho

; Pereira, Andressa Rocha

; Costa, Elisa Miranda

; Araújo, Mayra Sharlenne Moraes

; Oliveira, Daniel Cavalcante de

; Oliveira, Bruno Luciano Carneiro Alves de

; Rangel, Maurício Eduardo Salgado

; Tonello, Aline Sampieri

; Lopes, Denise Ailine Monteiro

; Pinheiro, Vanessa Vieira

; Câmara, Ana Patricia Barros

; Santos, Alcione Miranda dos

; Vasconcelos, Vitor Vieira

Ciência & Saúde Coletiva

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2024, Volume 29 N. 1 elocation e19892022

Abstract: En Pt | Text: En Pt | PDF: En | PDF: Pt

https://doi.org/10.1590/1413-81232024291.19892022

13.

How many meals and snacks do Brazilians eat a day? Findings from the 2017-2018 Brazilian National Dietary Survey
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Rodrigues, Paulo Rogério Melo

; Monteiro, Luana Silva

; Vasconcelos, Thaís Meirelles de

; Gomes, Luiz Eduardo da Silva

; Alves, Iuna Arruda

; Baltar, Valéria Troncoso

; Gorgulho, Bartira Mendes

; Yokoo, Edna Massae

; Sichieri, Rosely

; Pereira, Rosangela Alves

Cadernos de Saúde Pública

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2024, Volume 40 N. 2 elocation e00009923

Abstract: Pt En Es | Text: Pt En Es | PDF: Pt | PDF: En | PDF: Es

Os hábitos de consumo de refeições específicas têm sido abordados em diversos estudos, no entanto, a avaliação dos padrões refeições tem recebido menos atenção. O objetivo deste estudo foi descrever os padrões de refeições da população brasileira. Um desenho amostral complexo foi utilizado para selecionar os 46.164 indivíduos de ≥ 10 anos examinados no Inquérito Nacional de Alimentação de 2017-2018. O consumo alimentar foi avaliado por meio de dois recordatórios de 24 horas não consecutivos, aplicados durante um período de uma semana. A análise exploratória de dados foi utilizada para determinar os padrões de refeições, ou seja, como os indivíduos combinam as principais refeições (café da manhã, almoço, jantar) e lanches (manhã, tarde, noite) ao longo do dia. Os padrões de refeições mais frequentes foram três refeições principais + um lanche, conforme relatado por 25,1% dos indivíduos, e três refeições principais + dois lanches (24,6%). Outros padrões de refeições identificados foram: três refeições principais + três lanches (18,5%); três refeições principais e nenhum lanche (10,9%); uma ou duas refeições principais + dois lanches (7,4%); uma ou duas refeições principais + um lanche (6,9%); uma ou duas refeições principais + três lanches (4,2%); e uma ou duas refeições principais e nenhum lanche (2,3%). Os padrões de refeições variaram de acordo com o sexo e a faixa etária, e nos dias típicos em comparação com os atípicos de consumo alimentar. Verificou-se que oito padrões caracterizaram o consumo diário de refeições no Brasil. Além disso, cerca de 80% da população realizava três refeições principais diárias e cerca de 13% reportaram não lanchar. A caracterização dos padrões de refeições é importante para adequar e direcionar ações de promoção da saúde.

The habit of eating specific meals has been addressed in several studies, but the evaluation of meal patterns has received less attention. This study aimed to describe the meal patterns of the Brazilian population. A complex sampling design was used to select the 46,164 ≥ 10-year-old individuals examined in the Brazilian National Dietary Survey. Food consumption was assessed by two non-consecutive 24-hour recalls applied throughout a one-week period. The exploratory data analysis approach was used to determine the meal patterns, i.e., how individuals combined the main meals (breakfast, lunch, dinner) and snacks (morning, afternoon, evening/night) throughout the day. The most common meal patterns were three main meals + one snack, reported by 25.1% of the individuals, and three main meals + two snacks (24.6%). Other meal patterns identified were: three main meals + three snacks (18.5%); three main meals and no snacks (10.9%); one or two main meals + two snacks (7.4%); one or two main meals + one snack (6.9%); one or two main meals + three snacks (4.2%); and one or two main meals and no snacks (2.3%). Meal patterns varied according to gender and age group, and on typical versus atypical food consumption days. We found that eight patterns characterized the daily meal consumption in Brazil. Furthermore, around 80% of the population had three main meals every day and about 13% did not report having any snacks. The characterization of meal habits is important for tailoring and targeting health promotion actions.

Los hábitos alimenticios específicos se han abordado en varios estudios, sin embargo, poco se sabe sobre la evaluación de los patrones de alimentación. El objetivo de este estudio fue describir el patrón de alimentación de la población brasileña. Se utilizó un diseño de muestra complejo para seleccionar a 46.164 individuos de ≥ 10 años quienes participaron en la Encuesta Nacional de Alimentación 2017-2018. El consumo alimentario se evaluó mediante dos registros de 24 horas no consecutivos, aplicados durante una semana. Para determinar el patrón de alimentación, se aplicó el análisis exploratorio, es decir, cómo las personas combinan las comidas principales (desayuno, almuerzo, cena) y las meriendas (mañana, tarde, noche) a lo largo del día. Los patrones de alimentación más frecuentes fueron tres comidas principales + una merienda según informan el 25,1% de los individuos, y tres comidas principales + dos meriendas (24,6%). Otros patrones identificados destacaron tres comidas principales + tres meriendas (18,5%); tres comidas principales sin merienda (10,9%); una o dos comidas principales + dos meriendas (7,4%); una o dos comidas principales + una merienda (6,9%); una o dos comidas principales + tres meriendas (4,2%); y una o dos comidas principales sin merienda (2,3%). Los patrones de alimentación tuvieron una variación según el sexo y el grupo de edad, y en días típicos en comparación con los atípicos de consumo de alimentos. Se encontró que ocho patrones caracterizan el consumo diario de comidas en Brasil. Por lo tanto, aproximadamente el 80% de la población tienen tres comidas principales al día y aproximadamente el 13% informan que no tienen merienda. Es importante caracterizar los patrones de alimentación para adaptar y orientar las acciones de promoción de la salud.

https://doi.org/10.1590/0102-311xen009923

14.

Eu, nós… ELAS quilombolas: documentário sobre vacinação contra COVID-19 em quilombolas enquanto dispositivo antirracista
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Gerhardt, Tatiana Engel

; Migon, Natália Bristot

; Madrid, Rosemeri da Silva

; Soares, Jaqueline Oliveira

; Lubisco, Ricardo Palmeiro

; Eschiletti, Joana da Costa

; Santos, Joseane dos

Ciência & Saúde Coletiva

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2024, Volume 29 N. 3 elocation e04482023

Abstract: En Pt | Text: En Pt | PDF: En | PDF: Pt

Abstract We quilombola women, a documentary that considers the quilombola identity and the right to COVID-19 vaccination, evokes notions of priority, rights, privileges and identity during the process of matching the number of vaccine doses available to citizens’ arms. Omission by a Brazilian federal government grounded in necro-politics and denial, plus a lack of information, led quilombo communities to take it on themselves to draw up lists of those eligible for vaccination. The production team’s aim was to use images as political language in the health field, so as to document and give visibility to these issues as one illustration of combating social and health inequalities and inequities rooted in structural racism. By combining science and art and interlacing references from the sociology of images, visual anthropology, plus the work and aesthetic devices of Eduardo Coutinho, the audiovisual production method brought out three key categories: I, We, and They, quilombola women. This article explores these categories underpinning construction of the documentary narrative, which drew on the potential of images, which in turn served as anti-racist, political and educational devices, both in the course of the production process and during the public screenings.

Resumo Eu, nós... ELAS quilombolas, documentário que aborda a identidade quilombola e o direito à vacinação contra a COVID-19, faz emergir noções como prioridade, direito, privilégio e identidade durante o processo que precisa vincular os números de doses a braços de cidadãos. No Brasil, diante da omissão do governo federal, fundamentada na necropolítica e no negacionismo, a falta de informações levou as comunidades quilombolas a se responsabilizarem pela construção das listas de aptos a receberem a vacina. O objetivo da produção foi utilizar as imagens como linguagem política na área da saúde, documentando e dando visibilidade para essas questões, como ilustração de processos de enfrentamento das desigualdades e iniquidades sociais e de saúde pautadas no racismo estrutural. Ao associar ciência e arte, o método de produção audiovisual, entrelaçado com os referenciais da sociologia das imagens, da antropologia visual e dos dispositivos de produção e estética de Coutinho, emergiram três categorias: o eu, o nós e o elas. Este artigo apresenta as categorias que embasaram a construção narrativa do documentário a partir das potencialidades das imagens, que se apresentaram como dispositivo político-pedagógico antirracista, tanto durante o processo de produção quanto ao longo das exibições públicas.

https://doi.org/10.1590/1413-81232024293.04482023

15.

Concrete mix design method for durability based on particle packing concept
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Silva, Leonária Araújo

; Silva, Wanner Kelly Damasceno da

; Cabral, Antônio Eduardo Bezerra

; Pinheiro, Gustavo de Medeiros

; Oliveira, Antônio Medeiros de

Revista IBRACON de Estruturas e Materiais

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2024, Volume 17 N. 4 elocation e17404

Abstract: En Pt | Text: En Pt | PDF: En | PDF: Pt

Abstract Concrete presents complex behavior, being a difficult material to define the ideal proportion of its constituents. To overcome this challenge, many mix design methods have been developed over time. However, most of these methods do not consider durability parameters during the procedure. Thus, the objective of this article is to present a mix design method for concrete, with properties of workability (slump rating from 50 mm to 220 mm), axial compressive strength (class of 25MPa to 55MPa), and durability as response parameters. From the application of the proposed method, it was possible to create mix design and performance diagrams. It was noticed that all concretes fell into the pre-established consistency class and presented axial compressive strength results close to the predetermined values. Moreover, it was possible to obtain indications of the material's durability.

Resumo O concreto apresenta um comportamento complexo, sendo uma atividade difícil definir a proporção ideal dos seus constituintes. A fim de superar esse desafio, muitos métodos de dosagem foram desenvolvidos, ao longo do tempo. Entretanto, a maioria desses métodos não considera parâmetros de durabilidade durante o procedimento. Assim, o objetivo deste artigo é apresentar um método para dosar concretos, tendo como parâmetros de resposta propriedades de trabalhabilidade (valores de abatimento de 50 mm a 220 mm), de resistência à compressão axial (classe de 25MPa a 55MPa) e de durabilidade. A partir da aplicação do método proposto, foi possível elaborar os diagramas de dosagem e de desempenho. Percebeu-se que todos os concretos se enquadraram na classe de consistência pré-estabelecida e apresentaram resultados de resistência à compressão axial próximos aos valores pré-determinados. Além disso, foi possível obter indicativos da durabilidade do material.

https://doi.org/10.1590/s1983-41952024000400004

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