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Abstract The aim of this study was to evaluate the osseointegration of a hydrophilic surface (blasting + acid etching + immersion in isotonic solution) in comparison with that of a control surface (blasting + acid etching) using an experimental model of low-density bone. To perform the study, 24 rabbits were submitted to the installation of 4 implants in the iliac bone bilaterally: 2 implants with a control surface and 2 implants with a hydrophilic surface. The rabbits were euthanized at 2, 4, and 8 weeks after implant installation. After euthanasia, one implant from each surface was used to perform the removal torque analysis, and the other implant was used for the execution of non-decalcified histological sections and evaluation of the bone implant contact (% BIC) as well as the fraction of bone tissue area between the implant threads (% BBT). The implants with a hydrophilic surface presented higher %BIC (42.92 ± 2.85% vs. 29.49 ± 10.27%) and % BBT (34.32 ± 8.52% vs. 23.20 ± 6.75%) (p < 0.05) in the 2-week period. Furthermore, the hydrophilic surface presented higher removal torque in the 8-week period (76.13 ± 16.00 Ncm2 vs. 52.77 ± 13.49 Ncm2) (p<0.05). Implants with a hydrophilic surface exhibited acceleration in the process of osseointegration, culminating in greater secondary stability in low-density bone than in implants with a control surface.

Resumo O objetivo deste estudo foi avaliar a osseointegração de uma superfície hidrofílica (jateamento + ataque ácido + imersão em solução isotônica) em comparação com uma superfície controle (jateamento + ataque ácido) usando um modelo experimental de osso de baixa densidade. Para realizar o estudo, 24 coelhos foram submetidos a instalação de 4 implantes bilateralmente no osso ilíaco: 2 implantes com superfície controle e 2 implantes com superfície hidrofílica. Os coelhos foram eutanasiados com 2, 4 e 8 semanas após a instalação dos implantes. Após a eutanásia, um implante de cada superfície foi usado para avaliar o torque de remoção, e o outro implante foi utilizado para execução de cortes histológicos não descalcificados e avaliação de contato osso implante (% BIC) bem como a fração da área tecido ósseo entre as roscas do implante (% BBT). Os implantes com superfície hidrofílica apresentaram maior %BIC (42.92 ± 2.85% vs. 29.49 ± 10.27%) e % BBT (34.32 ± 8.52% vs. 23.20 ± 6.75%) (p < 0.05) no período de 2 semanas. Além disso, a superfície hidrofílica apresentou maior torque de remoção no período de 8 semana (76.13 ± 16.00 Ncm2 vs. 52.77 ± 13.49 Ncm2) (p<0.05). Implantes com a superfície hidrofílica apresentaram aceleração no processo de osseointregração, culminando em melhor estabilidade secundária no osso de baixa densidade em relação a implantes com superfície controle.

https://doi.org/10.1590/0103-6440202305352

[SciELO Preprints] - Anxiety and depression symptoms in university students from public institutions of higher education in Brazil during the covid-19 pandemic: a multicenter study
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Barbosa, Bruna Carolina Rafael Paula, Waléria de Ferreira, Aline Dayrell Freitas, Eulilian Dias de Chagas, Carolina Martins dos Santos Oliveira, Helian Nunes de Ferreira, Lívia Garcia Silva, Luciana Saraiva da Vidigal, Fernanda de Carvalho Nobre, Luciana Neri Machado, Elaine Leandro Cardoso, Clareci Silva Meireles, Adriana Lúcia

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Fecha de publicación: 2023-05-25

Resumen: En

This is a multicenter, cross-sectional study carried out with students regularly enrolled in undergraduate courses at eight Brazilian IFES. Data collection was conducted between October 2021 and February 2022 using an online self-completed questionnaire, which addressed sociodemographic and academic characteristics, lifestyle habits, and health conditions. Symptoms of anxiety and depression were assessed using the Depression, Anxiety, and Stress Scale-21 (DASS-21). Variables were analyzed descriptively using frequency distribution and Pearson’s chi-square test. To estimate the prevalence of symptoms of anxiety and depression, the proportion and 95% confidence interval (95%CI) were used. The level of adopted statistical significance was 5%.

https://doi.org/10.1590/SciELOPreprints.6080

Effect of different conditions and modes of application on bond strength of adhesives to dentine
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Cestari Fagundes, Ticiane

; Simões Gonçalves, Rafael

; de Souza e Silva Ramos, Fernanda

; de Castro Oliveira, Laryssa

; Dias Moda, Mariana

; Sanae Shinohara, Mirela

Revista Estomatológica Herediana

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Ene 2023, Volumen 33 Nº 1 Paginas 18 - 25

Resumen: En Es | Texto: En Es | PDF: En | PDF: Es

ABSTRACT Objective: To evaluate the microtensile bond strength in different dentine conditions (etched-E, non-etched-N, dry-D and wet-W) of a multimode adhesive (Scotchbond Universal-SU, 3M/ESPE) and a total etching adhesive (Ambar-AB, FGM) using a sonic device (Smart Sonic Device-SD, FGM). Material and methods: In this in vitro study, ninety six sound extracted human molars were divided into 12 groups (n=8) according to different dentine conditions and adhesive systems. Enamel was removed and the middle dentine surfaces were polished. Each adhesive system was applied according to the different dentine conditions, and composite resin blocks were incrementally built up and stored for 24 hours. Specimens were sectioned into sticks and bond strength data were analyzed with the Kruskal-Wallis test and Mann-Whitney U tests. Results: No effects of sonic application and were observed. In general, AB showed lower results compared to the SU. E and N conditions did not statistically affect the bond strength of SU groups. Dry dentine presented statistically superior bond strength values when compared to wet dentine for SU/E/SD group. Conclusion: Adhesion of dry dentine with multimode adhesive system may be superior to wet dentine with sonic application. The modes of application had no influence in bond strength of studied adhesives.

RESUMEN Objetivo: Evaluar la resistencia de la unión microtensil en diferentes condiciones de dentina (grabado-E, sin grabado-N, seco-D y húmedo-W) de un adhesivo multimodo (Scotchbond Universal-SU, 3M/ESPE) y un adhesivo de grabado total (Ambar-AB, FGM) utilizando un dispositivo sónico (Smart Sonic Device-SD, FGM). Material y Métodos: En este estudio in vitro, noventa y seis molares humanos extraídos sanos se dividieron en 12 grupos (n=8) de acuerdo con diferentes condiciones de dentina y sistemas adhesivos. Se eliminó el esmalte y se pulieron las superficies centrales de la dentina. Cada sistema adhesivo se aplicó de acuerdo con las diferentes condiciones de dentina, y los bloques de resina compuesta se acumularon de forma incremental y se almacenaron durante 24h. Las muestras se seccionaron en barras y los datos de resistencia de la unión se analizaron con la prueba de Kruskal-Wallis y la prueba de U de Mann-Whitney. Resultado: No se observaron efectos de la aplicación sónica. En general, AB mostró resultados más bajos en comparación con el SU. Las condiciones E y N no afectaron estadísticamente la fuerza de unión de los grupos SU. La dentina seca presentó valores de fuerza de adhesión estadísticamente superiores en comparación con la dentina húmeda para el grupo SU/E/SD. Conclusión: La adhesión de la dentina seca con un sistema adhesivo multimodo puede ser superior a la dentina húmeda con aplicación sónica. Los modos de aplicación no tuvieron influencia en la resistencia de la unión de los adhesivos estudiados.

https://doi.org/10.20453/reh.v33i1.4430

Agronomic potential of BC1F2 populations of Santa Cruz dwarf tomato plants
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Gomes, Danilo Araújo

; Maciel, Gabriel Mascarenhas

; Brandão Neto, Luiz

; Oliveira, Camila Soares de

; Siquieroli, Ana Carolina Silva

; Finzi, Rafael Resende

Acta Scientiarum. Agronomy

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2023, Volumen 45 elocation e56482

Resumen: En | Texto: En | PDF: En

ABSTRACT. The use of dwarf lines to obtain mini-tomato hybrid plants has led to agronomic and economic advantages. However, the benefits provided by dwarf parents in tomato hybrids of the Santa Cruz type remain unexplored. The aims of this study were to determine the agronomic enhancement in BC1F2 dwarf populations bearing characteristic fruit of the Santa Cruz type after the first backcross and to select populations with high agronomic potential and fruit quality. The experiment was conducted in a greenhouse using a randomized block design with 15 treatments and 4 replicates. Evaluated genetic materials included 11 BC1F2 dwarf tomato populations, both parents (recurrent and donor), and the cultivars (Santa Cruz Kada and Santa Clara). Traits evaluated included: mean weight, soluble solid concentration, number of locules, shape, pulp thickness, fruit longitudinal and transversal diameters, internode length, and plant height. Univariate, multivariate, correlation, and selection index analyses showed that mean fruit weight, transverse diameter, and pulp thickness increased significantly in dwarf populations after a single backcross, most of them exhibiting a fruit shape similar to that of the Santa Cruz type. The dwarf BC1F2 populations UFU-Sci#11 and UFU-Sci#12 showed high potential for obtaining lines and, subsequently, Santa Cruz type hybrids.

https://doi.org/10.4025/actasciagron.v45i1.56482

Práticas corporais e o tratamento interdisciplinar de pessoas com fibromialgia: a dádiva do cuidado
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Oliveira, Leonardo Hernandes de Souza

; Silva, Alan Camargo

; Santo, Wecisley Ribeiro do Espírito

; Mattos, Rafael da Silva

Saúde e Sociedade

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2023, Volumen 32 Nº 4 elocation e210849pt

Resumen: En Pt | Texto: En Pt | PDF: En | PDF: Pt

Abstract Fibromyalgia is a rheumatic syndrome characterized by chronic and diffuse musculoskeletal pain that presents diagnostic and therapeutic challenges to Western medical rationality. Studies highlight the role of interdisciplinary treatment (IT) and corporal practices of health (CPH) in terms of health care and reception. The acts of giving, receiving, and returning symbolic gifts of care provide sociability, recognition, and legitimacy in the health field. The objective of this article is to understand IT and CPH as a system for exchanging health care gifts that is established between people diagnosed with fibromyalgia and health professionals. This is a qualitative study carried out by applying an open interview and carrying out field observation with eight people diagnosed with fibromyalgia and a semi-open questionnaire with nine health professionals. Content Analysis led to the elaboration of a thematic category: “The triple obligation cycle of giving health care.” The constitution of the gift in the health care process occurred by an affective-therapeutic displacement to the other, a gift of hospitality, and a gift of recognition. In summary, it was possible to perceive the relevance of IT and CPH as circuits of reciprocity capable of building new social uses of the body in social instances of life.

Resumo A fibromialgia é uma síndrome reumática caracterizada por dor musculoesquelética crônica e difusa que apresenta desafios diagnósticos e terapêuticos à racionalidade médica ocidental. Estudos ressaltam o papel do tratamento interdisciplinar (TI) e das práticas corporais de saúde (PCS) em termos de cuidado em saúde e acolhimento. Os atos de dar, receber e retribuir dádivas simbólicas de cuidado fornecem sociabilidade, reconhecimento e legitimidade no campo da saúde. O objetivo deste artigo é compreender o TI e as PCS como um sistema de troca de dádivas de cuidado em saúde que se estabelece entre pessoas diagnosticadas com fibromialgia e profissionais de saúde. Trata-se de um estudo qualitativo realizado mediante aplicação de entrevista aberta e observação em campo com oito pessoas diagnosticadas com fibromialgia e questionário semiaberto com nove profissionais de saúde. A Análise do Conteúdo resultou na construção de uma categoria temática: “O ciclo da tripla obrigação da dádiva do cuidado em saúde”. A constituição da dádiva no processo de cuidado em saúde ocorreu mediante um deslocamento afetivo-terapêutico ao próximo, dom da hospitalidade e dom do reconhecimento. Em síntese, foi possível perceber a relevância do TI e das PCS como circuitos de reciprocidade capazes de construir novos usos sociais do corpo nas instâncias sociais da vida.

https://doi.org/10.1590/s0104-12902023210849pt

Compounded drugs as an alternative to the therapeutical gaps of inborn errors of metabolism
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Fachini, Adrielle da Silva

; Malaquias, Lorena Freitas Barros

; Nogueira, Luma de Lira

; Giacone, Ludmila Alvim Gomes Pinho

; Tavares, Noemia Urruth Leão

; Cardoso, Maria Teresinha de Oliveira

; Gelfuso, Guilherme Martins

; Silva, Dayde Lane Mendonça da

; Santana, Rafael Santos

Brazilian Journal of Pharmaceutical Sciences

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2023, Volumen 59 elocation e21109

Resumen: En | Texto: En | PDF: En

Abstract Inborn errors of metabolism are rare disorders with few therapeutic options for their treatments, which can make patients suffer with complications. Therefore, compounded drugs might be a promising option given that they have the ability of meeting the patient’s specific needs, (i) identification of the main drugs described in the literature; (ii) proposal of compounding systems and (iii) calculation of the budgetary addition for the inclusion of these drugs into the Brazilian Unified Health System. The research conducted a literature review and used management data as well as data obtained from official Federal District government websites. The study identified 31 drugs for the treatment of inborn errors of metabolism. Fifty eight percent (58%) (18) of the medicines had their current demand identified, which are currently unmet by the local Health System. The estimated budget for the production of compounded drugs was of R$363,16.98 per year for approximately 300 patients. This estimated cost represents a budgetary addition of only 0.17% from the total of expenditures planned for drug acquirement. There is a therapeutic gap for inborn errors of metabolism and compounding pharmacies show potential in ensuring access to medicine therapy with a low-cost investment.

https://doi.org/10.1590/s2175-97902023e21109

Mapping wood volume in seasonally dry vegetation of Caatinga in Bahia State, Brazil
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Silva, Thaine Teixeira

; Lima, Robson Borges de

; Souza, Rafael Lucas Figueiredo de

; Moonlight, Peter W.

; Cardoso, Domingos

; Santos, Héveli Kalini Viana

; Oliveira, Cinthia Pereira de

; Veenendaal, Elmar

; Queiroz, Luciano Paganucci de

; Rodrigues, Priscyla Maria Silva

; Santos, Rubens Manoel dos

; Sarkinen, Tiina

; Paula, Alessandro de

; Barreto-Garcia, Patrícia Anjos Bittencourt

; Pennington, Toby

; Phillips, Oliver Lawrence

Scientia Agricola

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2023, Volumen 80 elocation e20220161

Resumen: En | Texto: En | PDF: En

ABSTRACT The Caatinga biome in Brazil comprises the largest and most continuous expanse of the seasonally dry tropical forest (SDTF) worldwide; nevertheless, it is among the most threatened and least studied, despite its ecological and biogeographical importance. The spatial distribution of volumetric wood stocks in the Caatinga and the relationship with environmental factors remain unknown. Therefore, this study intends to quantify and analyze the spatial distribution of wood volume as a function of environmental variables in Caatinga vegetation in Bahia State, Brazil. Volumetric estimates were obtained at the plot and fragment level. The multiple linear regression techniques were adopted, using environmental variables in the area as predictors. Spatial modeling was performed using the geostatistical kriging approach with the model residuals. The model developed presented a reasonable fit for the volume m3 ha with r2 of 0.54 and Root Mean Square Error (RMSE) of 10.9 m3 ha–1. The kriging of ordinary residuals suggested low error estimates in unsampled locations and balance in the under and overestimates of the model. The regression kriging approach provided greater detailing of the global wood volume stock map, yielding volume estimates that ranged from 0.01 to 109 m3 ha–1. Elevation, mean annual temperature, and precipitation of the driest month are strong environmental predictors for volume estimation. This information is necessary to development action plans for sustainable management and use of the Caatinga SDTF in Bahia State, Brazil.

https://doi.org/10.1590/1678-992x-2022-0161

Leptospira interrogans insoluble fraction as a potential antigen source for lateral flow immunochromatography
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Campos, Hevandro de Souza

; Silva, Edimilson Domingos da

; Lima, Gerson Silva de

; Resende, Rafael de Oliveira

; Burth, Patricia

Memórias do Instituto Oswaldo Cruz

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2023, Volumen 118 elocation e220265

Resumen: En | Texto: En | PDF: En

BACKGROUND Leptospirosis is an emerging zoonosis that affects humans and animals. Immunochromatography rapid test is widely used for early diagnosis of leptospirosis, but with low sensitivity and specificity. OBJECTIVES To evaluate Leptospira interrogans insoluble fraction as a potential antigen source for lateral flow immunochromatography. METHODS Insoluble fraction derived from the crude bacterial extract was obtained by serial centrifugation. The polypeptide profile was determined using sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). Immune reactivity of this fraction was assessed by Western Blotting and lateral flow immunochromatography (LFI). It was tested 160 microagglutination test (MAT)-positive sera from patients in the acute phase, 100 MAT-negative sera from patients with acute febrile illness, and 45 patients with other infectious diseases. FINDINGS There was a predominance of low molecular mass-polypeptide bands, ranging from 2 to 37 kDa. The antibody reactivity of theses polypeptides was found to range from 13-50%, especially between 10 and 38 kDa. Among MAT-positive sera of patients with leptospirosis in the acute phase, 97% were also positive in LFI, indicating high sensitivity. Among MAT-negative sera, all were negative in LFI, indicating high specificity. Only 2% of cross-reactivity was detected. CONCLUSION The insoluble fraction can be a valuable antigen source for development of point-of-care diagnosis test for leptospirosis.

https://doi.org/10.1590/0074-02760220265

10.

Ensino Remoto Emergencial: práticas educacionais e percepções docentes
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Garcia, Rafael Vilas Boas

; Henklain, Marcelo Henrique Oliveira

; Moraes, Maely da Silva

; Alves, Renner Coelho Messias

Educação & Realidade

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2023, Volumen 48 elocation e124612

Resumen: En Pt | Texto: En Pt | PDF: En | PDF: Pt

ABSTRACT Emergency Remote Education (ERE) has been the only viable teaching option due to the covid-19 pandemic. Thus, the goal of this study was to characterize teaching practices and the perceptions of professors related to the teaching at the Federal University of Roraima (FURR/UFRR). An online questionnaire was answered by 150 professors of UFRR, that indicate that professors evaluate ERE with above average satisfaction. In addition, they point out that ICT are important as educational tools for the educational process, but they need better conditions. It is concluded, therefore, that the implementation of the ERE at UFRR obtained results that allowed minimizing the negative impacts from the restrictive measures of covid-19 on student learning.

RESUMO O Ensino Remoto Emergencial (ERE) é apresentado como única opção de ensino enquanto durar a pandemia de covid-19. O objetivo deste estudo foi caracterizar práticas de ensino e percepções de professores sobre o ensino realizado na Universidade Federal de Roraima (UFRR). Um questionário online foi respondido por 150 professores da UFRR, cujas respostas apontam que os professores avaliam o ERE com satisfação acima da média. Além disso, apontam que as Tecnologias de Informação e Comunicação (TICs) são ferramentas educacionais importantes para o processo educacional, mas necessitam de melhores condições. Por fim, conclui-se que a implementação do ERE na UFRR obteve resultados que minimizaram os impactos negativos derivados das medidas restritivas da covid-19 no aprendizado dos alunos.

https://doi.org/10.1590/2175-6236124612vs01

11.

The association among the consumption of ultra-processed food and body image, nutritional status and physical activity of pregnant women at the primary health care
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Rodrigues, Carolina Amaral Oliveira

; Leão, Giselle Mara Mendes Silva

; Andrade, Ruth Emanuele Silva

; Freire, Rafael Silveira

; Crivellenti, Lívia Castro

; Silveira, Marise Fagundes

; Silva, Rosângela Ramos Veloso

; Brito, Maria Fernanda Santos Figueiredo

; Pinho, Lucinéia de

Revista Brasileira de Saúde Materno Infantil

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2023, Volumen 23 elocation e20220362

Resumen: En Pt | Texto: En Pt | PDF: En | PDF: Pt

Abstract Objectives: to analyze the consumption of ultra-processed food and its association with body image, physical activity, nutritional status and self-assessment on food of pregnant women enrolled in the Primary Health Care. Methods: this is a cross-sectional study carried out with pregnant women enrolled in the Family Health Strategy in the city of Montes Claros, Minas Gerais. Data were collected through a questionnaire. The dependent variable was the consumption of ultra-processed food, and the independent ones addressed body appearance, physical activity, nutritional status, self-assessment on food and food consumption. Descriptive analysis was carried out and for association of analysis, the linear regression model was used with crude and adjusted associations. Results: 1,185 pregnant women participated in the study. Caloric intake from ultra-processed food represented 32.0% of these women’s daily diet. There was an association between consumption of ultra-processed food and physical activity (β=-0.08; p<0.01), pre-gestional nutritional status (β=-0,12; p<0.01) and body image (β =0.08; p=0.01). Conclusion: the pregnant women presented high consumption of ultra-processed food. Having a negative body image, the lowest level of physical activity, and high pre-gestational nutritional status are conditions that influenced the consumption of these food.

Resumo Objetivos: analisar o consumo de alimentos ultraprocessados e sua associação com imagem corporal, atividade física, estado nutricional e autoavaliação alimentar de gestantes cadastradas na Atenção Primária à Saúde. Métodos: trata-se de um estudo transversal, realizado com gestantes cadastradas na Estratégia Saúde da Família do município de Montes Claros, Minas Gerais. Os dados foram coletados por meio de um questionário. A variável dependente foi consumo de alimentos ultraprocessados, e as independentes abordaram aspecto corporal, atividade física, estado nutricional, autoavaliação alimentar e consumo alimentar. Realizou-se análise descritiva e para análise de associação, utilizou-se o modelo de regressão linear com associações brutas e ajustadas. Resultados: participaram do estudo 1.185 gestantes. O consumo calórico proveniente dos ultraprocessados representou 32,0% da dieta diária dessas mulheres. Verificou-se associação entre consumo de ultraprocessados com atividade física (β=-0,08; p<0,01), estado nutricional pré-gestacional (β=-0,12; p<0,01) e imagem corporal (β=0,08; p=0,01). Conclusão: as gestantes apresentaram alto consumo de alimentos ultraprocessados. Ter imagem corporal negativa, menor nível de atividade física, estado nutricional pré-gestacional elevado são condições que influenciaram o consumo desses alimentos.

https://doi.org/10.1590/1806-9304202300000362-en

12.

Slope position controls prescribed fire effects on soil: a case study in the high-elevation grassland of Itatiaia National Park
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Oliveira, Ana Paula Pessim de

; Silva Neto, Eduardo Carvalho da

; Marcondes, Robson Altiellys Tosta

; Pereira, Marcos Gervasio

; Motta, Marcelo Souza

; Diniz, Yan Vidal de Figueiredo Gomes

; Fagundes, Hugo de Souza

; Delgado, Rafael Coll

; Santos, Otavio Augusto Queiroz dos

; Anjos, Lúcia Helena Cunha dos

Revista Brasileira de Ciência do Solo

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2023, Volumen 47 elocation e0230009

Resumen: En | Texto: En | PDF: En

ABSTRACT There is a need for greater knowledge about the medium- and long-term effects of prescribed fire management on soil in ecosystems prone to wildfires and more vulnerable to climate change. This study examined the short- and medium-term effects of prescribed fire on soil chemical properties and chemical fractions of soil organic matter (SOM) in two positions of the landscape in a high-elevation grassland environment. The ecosystem is located in the mountain peaks of southeastern Brazil associated with the Atlantic Forest biome. Prescribed fire was conducted in 2017 to reduce understory vegetation and thus prevent potential severe wildfires. Soil samples were collected at the layers of 0.00-0.10, 0.10-0.20, and 0.20-0.40 m, at eight composite sampling. The composite samples were collected on five different occasions: before the prescribed fire, and 10, 30, 90, and 240 days after the prescribed fire. Soil chemical properties, total organic carbon, labile C, and chemical fractionation of SOM were analyzed. All soil properties investigated were affected by the prescribed fire, with variations in landscape position, duration of effect, and soil layer. In the backslope area, the medium-term effect of fire was negative and induced soil degradation and induced soil degradation. In the footslope area, the system showed greater resilience to the effects of fire, as indicated by the recovery of the soil’s chemical properties. These results can help assess the suitability of controlled burning of vegetation for managing risks of fire in mountainous regions, such as high-elevation grasslands.

https://doi.org/10.36783/18069657rbcs20230009

13.

From coconut waste to the production of cementitious composites as an alternative for civil construction
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Silva, Fernanda Monique da

; Scatolino, Mario Vanoli

; Paula, Edgley Alves de Oliveira

; Almeida, Vanessa Gentil de Oliveira

; Albuquerque, Felipe Bento de

; Vieira, Ricardo Alan da Silva

; Souza, Joalis Barbalho de

; Pedrosa, Talita Dantas

; Rodolfo Junior, Francisco

; Melo, Rafael Rodolfo de

Matéria (Rio de Janeiro)

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2023, Volumen 28 Nº 3 elocation e20220146

Resumen: En | Texto: En | PDF: En

ABSTRACT Economic development based on cleaner industrial technologies has been increasingly studied in recent years. Cementitious composites reinforced with lignocellulosic fibers can be a sustainable alternative for use in engineering. The study aimed to evaluate the technological properties of cementitious composites produced from natural and industrial coconut fiber to compare the reinforcement with wood particles. Physical tests (density, water absorption, and thickness swelling) and mechanical tests (static bending) were carried out in four treatments, which varied the fiber and cement contents. It was found that treatment with natural coconut fiber had the lowest density value, 0.59 g/cm3, and treatment with industrial coconut fiber had the lowest water absorption value for the times and times of 2 and 24 h, 0.19, and 0.38%, respectively, and the treatment with wood particles, the highest values of modulus of elasticity and rupture, 1,897 MPa and 2.44 MPa. The study of the use of lignocellulosic materials as protection in cementitious composites is essential for applications in building constructions to reduce the environmental impacts generated by the generation of waste and use of non-renewable materials and to promote sustainable development.

https://doi.org/10.1590/1517-7076-rmat-2023-0146

14.

Práticas corporais e o tratamento interdisciplinar de pessoas com fibromialgia: a dádiva do cuidado
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Oliveira, Leonardo Hernandes de Souza

; Silva, Alan Camargo

; Santo, Wecisley Ribeiro do Espírito

; Mattos, Rafael da Silva

Saúde e Sociedade

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2023, Volumen 32 Nº 4 elocation e210849pt

Resumen: En Pt | Texto: En Pt | PDF: En | PDF: Pt

https://doi.org/10.1590/s0104-12902023210849pt

15.

BR-EMS 2021 life table for the Brazilian insured population
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Oliveira, Mario de

; Bertho, Ana Carolina Soares

; Costa, Bruno

; Silva, Flávia Sommerlatte

; Alves, Mariane Branco

; Ramirez, Milton Ramos

; Borges, Rafael Brandão de Rezende

; Marques, Reinaldo

; Rosa, Ricardo Martins da Silva

; Peregrino, Rodrigo Lima

; Lobo, Viviana das Graças Ribeiro

; Fonseca, Thais Cristina Oliveira

Revista Brasileira de Estudos de População

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2023, Volumen 40 elocation e0252

Resumen: En Es Pt | Texto: En Es Pt | PDF: En | PDF: Es | PDF: Pt

Abstract This article presents the Brazilian private insurance market’s actuarial life tables, BR- EMS 2021. Using Bayesian inference on the parameters of the Heligman- Pollard law of mortality and data from 23 insurance groups over 15 years, totaling 3.5 billion registers, the data were corrected through a two hidden-layer neural network. The resulting tables show that the insured population exhibits lower mortality rates than the general Brazilian population, even lower than the national populations of well-developed countries such as the USA. Moreover, besides the expected gender gap in mortality rates, there is a clear distance between the death and survivorship insurance coverage groups. Likewise, the insured population characteristics mitigate well-known regional structural discrepancies in the Brazilian population, indicating that being part of the selected population of insured individuals is thus associated with a more effective protection against death than other outstanding factors such as geographic region of residence.

Resumen Este artículo presenta las tablas de vida del mercado de seguros privados brasileño, BR-EMS 2021. Los datos, obtenidos de 23 grupos de seguros a lo largo de 15 años, totalizando 3,5 mil millones de registros, fueron corregidos usando una red neuronal con dos capas ocultas. Mediante la inferencia bayesiana para estimar los parámetros bajo la ley de mortalidad de Heligman-Pollard, las tablas obtenidas muestran que la población asegurada tiene tasas de mortalidad más bajas que la población general brasileña e incluso más bajas que las poblaciones nacionales de países desarrollados, como los Estados Unidos de Norteamérica. Además de la diferencia de género esperada en las tasas de mortalidad, hay una clara distinción entre las tablas de grupos de cobertura de riesgo y cobertura de sobrevivientes. Asimismo, se demuestra que las tablas regionales de población asegurada no presentan las conocidas discrepancias estructurales regionales en Brasil, lo que indica que participar de la población de asegurados está asociado con una protección contra la muerte más efectiva que otros factores como la región geográfica de residencia.

Resumo Este artigo apresenta as tábuas de vida do mercado de seguros privados brasileiro, BR-EMS 2021. Os dados obtidos de 23 grupos seguradores ao longo de 15 anos, totalizando 3,5 bilhões de registros, foram corrigidos por meio de rede neural com duas camadas ocultas. Usando a inferência bayesiana para estimar os parâmetros sob a lei de mortalidade Heligman-Pollard, as tábuas obtidas mostram que a população segurada apresenta probabilidades de morte mais baixas do que a população brasileira em geral e até mesmo em relação a populações nacionais de países desenvolvidos, como os EUA. Além da esperada diferença de gênero nas taxas de mortalidade, há uma clara distância entre as probabilidades de morte dos grupos de cobertura de risco e cobertura de sobrevivência. Da mesma forma, é demonstrado que as tábuas regionais da população segurada não apresentam as discrepâncias regionais conhecidas no Brasil, indicando que fazer parte da população selecionada de segurados está associado a um fator de proteção mais eficaz do que outros fatores, como a região geográfica de residência.

https://doi.org/10.20947/s0102-3098a0252

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