Primary Energy
Mostrando 1-12 de 520 artigos, teses e dissertações.
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1. EFFECT OF REACTION CONDITIONS ON PARTICLE SIZE OF ZNO NANOPARTICLES VIA CONTROLLED PRECIPITATION METHOD AND IN-VITRO ANTIBACTERIAL CAPACITY
High-yield ZnO spheroidal nanoparticles with an average diameter around 23 nm (≈ 25% frequency) and 30 nm (≈ 28% frequency) were obtained by controlled semicontinuous precipitation at low temperatures. This synthesis was obtained from hydrozincite (Zn5(CO3)2(OH)6) as primary nanoparticles. The Zn5(CO3)2(OH)6 nanoparticles were synthesized by hydrolysis o
Química Nova. Publicado em: 2022
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2. The impact of COVID-19 in children and adolescents with obesity in Brazil
ABSTRACT Objective: The primary goal of the study was to evaluate weight gain in children and adolescents with obesity during the COVID-19 pandemic period, and compare it with the period before the pandemic. Subjects and methods: The sample comprised 68 children with obesity aged between 7 and 18 years, 30 (44.1%) boys and 38 (55.9%) girls, who were attend
Archives of Endocrinology and Metabolism. Publicado em: 2022
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3. Obesity-associated Pathways of Anthocyanins
Abstract Anthocyanins have a great potential for human health, as a sub-group of phenolic compounds. Interactions of anthocyanin involved in digestion and thus in obesity consist of inhibition of pancreatic lipase, regulation of lipolysis and lipogenesis, activation of an activated protein kinase enzyme, controlling of digestion hormones (leptin, insulin, gh
Food Sci. Technol. Publicado em: 2021-06
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4. Multi-Step-Ahead Spectrum Prediction for Cognitive Radio in Fading Scenarios
Abstract This paper analyzes multi-step-ahead spectrum prediction for Cognitive Radio (CR) systems using several future states. A slot-based scenario is used, and prediction is based on the Support Vector Machine (SVM) algorithm. The aim is to determine whether multi-step-ahead spectrum prediction has gains in terms of reduced channel-switching and increased
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2020-12
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5. Influence of High Light Intensity and Nitrate Deprivation on Growth and Biochemical Composition of the Marine Microalgae Isochrysis galbana
Abstract Isochrysis galbana is a brown microalgae widely used as a feed for marine organism in aquaculture. The aim of present study is to investigate the growth, biochemical composition, fatty acid profile, photosynthetic parameters and antioxidant activity (radical scavenging activity) of Isochrysis galbana cells cultivated under different levels (sub-opti
Braz. arch. biol. technol.. Publicado em: 20/12/2019
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6. Functional capacity assessment of long-lived older adults from Amazonas
RESUMO Objetivo: Avaliar a capacidade funcional de idosos longevos amazônidas. Método: Estudo epidemiológico, transversal, realizado com 116 idosos com idade igual ou superior a 80 anos, cadastrados em uma Unidade Municipal de Saúde em Belém-Pará, Brasil. Para avaliação da capacidade funcional, utilizou-se a Medida de Independência Funcional (MIF)
Rev. Bras. Enferm.. Publicado em: 05/12/2019
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7. Gonadal development and reproductive period of the characin Astyanax aff. bimaculatus (Characiformes: Characidae) in a tropical reservoir in southeastern Brazil
ABSTRACT The gonadal development of the characin Astyanax aff. bimaculatus from Funil Reservoir, an impoundment in the middle reaches of the Paraiba do Sul River in southeastern Brazil was analysed through histological, histochemical and histometric techniques, and the spawning season was determined. Unbalanced sex ratio was found, with females outnumbering
Zoologia (Curitiba). Publicado em: 25/11/2019
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8. Depressive symptoms in older adults in basic health care
Resumo Objetivo: Identificar sintomas depressivos em idosos atendidos na atenção básica. Método: Pesquisa descritivo-exploratória, delineamento transversal, quantitativa, realizada com 260 idosos cadastrados nas Unidades de Saúde da Família de João Pessoa, Paraíba, Brasil. Aplicou-se instrumento sociodemográfico e Escala de Depressão Geriátrica
Rev. bras. geriatr. gerontol.. Publicado em: 25/11/2019
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9. Effect of α/β Forging on Microstructure and Texture Inhomogeneity in a Ti-1023 Forged Disk
The microstructure and texture distribution of a Ti-1023 forged disk were investigated by scanning electron microscopy and synchrotron-based high-energy X-ray diffraction. The finite element method was used to simulate temperature and strain distribution in order to investigate the relationship of the α/β forging process with microstructure and texture dis
Mat. Res.. Publicado em: 30/09/2019
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10. Barreiras para prática de atividade física entre mulheres atendidas na Atenção Básica de Saúde
Resumo O objetivo do estudo foi comparar as barreiras para atividade física (AF) entre mulheres participantes e não participantes de um programa de exercícios físicos (EF) da Atenção Básica de Saúde (AB). Estudo transversal realizado em áreas de abrangência em unidades de saúde da AB que ofereciam programa de EF. Foram selecionadas 222 mulheres pa
Rev. Bras. Ciênc. Esporte. Publicado em: 16/09/2019
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11. Brazilian energy-related climate (in)action and the challenge of deep decarbonization
Abstract We present the challenge of deep decarbonization, the state of play of major economies regarding it, Brazilian outcomes compared to its peers and political struggles that help explain these outcomes. By identifying key actors, their interests and how they interact in domestic politics in issues that are key to deep decarbonization, we explain why Br
Rev. bras. polít. int.. Publicado em: 15/07/2019
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12. Influence of blasting charges and delays on the energy consumption of mechanical crushing
Abstract This article deals with a study performed at the Experimental Mine of the Research Center of Responsible Mining of the University of São Paulo, to examine the correlations between geological environment, blasting parameters and energy consumption in the primary crushing phase. The research is designed to appreciate the relationships between the ene
REM, Int. Eng. J.. Publicado em: 2019-06