Frequency Regulation
Mostrando 1-12 de 451 artigos, teses e dissertações.
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1. Computational algorithm for stability analysis of distribution networks with distributed generation
Abstract With the insertion of distributed generation in distribution networks, security analysis becomes crucial, in islanded operation or when the system is connected to the grid. Dynamic stability analyses are necessary in order to achieve minimum levels of security and reliability. Such analyses are obtained through the solution of the algebraic-differen
Braz. arch. biol. technol.. Publicado em: 25/11/2019
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2. Cantinas de escolas estaduais de Curitiba/PR, Brasil: adequação à lei de regulamentação de oferta de alimentos
Resumo Objetivou-se caracterizar a oferta de alimentos nas cantinas de escolas públicas estaduais de Curitiba, Paraná, e investigar associação da oferta de alimentos permitidos/não permitidos pela Lei das Cantinas, com variáveis da escola e da cantina. Foi realizado estudo transversal com entrevista aos administradores de cantinas em 27 escolas estadua
Ciênc. saúde coletiva. Publicado em: 26/09/2019
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3. Financial resilience of municipal civil servants’ pension funds
RESUMO O objetivo deste estudo é analisar as respostas a pressões e os padrões de resiliência financeira que emergem nos regimes próprios de previdência social (RPPS) municipais. A análise agrega à abordagem tradicional de resiliência financeira discutindo a vulnerabilidade que emerge da interação entre patrocinador e RPPS, estimulada muitas vezes
Rev. contab. finanç.. Publicado em: 10/07/2019
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4. HEART RATE VARIABILITY IN TENNIS PLAYERS
RESUMO Introdução Alguns estudos sugerem que a modalidade esportiva tênis traz benefícios aos perfis antropométrico e metabólico de seus praticantes, reduzindo o risco de mortalidade de forma mais significante que outras modalidades esportivas. Além disso, as alterações na regulação autonômica cardiovascular têm sido evidenciadas como fator co
Rev Bras Med Esporte. Publicado em: 01/07/2019
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5. Profissionais da saúde que atuam em ambiente hospitalar têm alta prevalência de fadiga e dorsalgia: estudo transversal
RESUMO O objetivo foi caracterizar o ambiente de trabalho por meio da Norma Regulamentadora 17 do Ministério do Trabalho (NR-17); avaliar a fadiga residual e estimar o risco da sua exposição e a presença de desconforto musculoesquelético de profissionais da saúde que atuam em um hospital público. Trata-se de estudo transversal composto por duas etapas
Fisioter. Pesqui.. Publicado em: 2019-03
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6. Astragalus polysaccharides decrease proliferation, migration, and invasion but increase apoptosis of human osteosarcoma cells by up-regulation of microRNA-133a
Osteosarcoma (OS) has a high incidence, malignity, and frequency of recurrence and metastasis. In this study, we aimed to explore the potential anti-cancer effects of Astragalus polysaccharides (APS) on human OS MG63 cells as well as underlying mechanisms. Viability of MG63 cells was assessed by CCK-8 assay to determine the adequate concentration of APS. The
Braz J Med Biol Res. Publicado em: 14/11/2018
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7. Were policies in Brazil effective to reducing trans fat from industrial origin in foods?
ABSTRACT OBJECTIVE To determine the trans fatty acids content of processed foods frequently consumed by adults living in a Rio de Janeiro, Brazil, after the enactment of a mandatory trans fatty acids labelling policy. METHODS Between February 2014 and January 2015, a specifically dietary questionnaire was completed by 107 adults to assess the frequency o
Rev. Saúde Pública. Publicado em: 09/04/2018
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8. Role of T. cruzi exposure in the pattern of T cell cytokines among chronically infected HIV and Chagas disease patients
OBJECTIVES: The impact of Chagas disease (CD) in HIV-infected patients is relevant throughout the world. In fact, the characterization of the adaptive immune response in the context of co-infection is important for predicting the need for interventions in areas in which HIV and Chagas disease co-exist. METHODS: We described and compared the frequency of cy
Clinics. Publicado em: 2017-11
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9. A new approach to feed frequency studies and protein intake regulation in juvenile pirarucu
ABSTRACT This study aimed to investigate pirarucu's (Arapaima gigas) ability to trigger a self-feeding system to regulate protein intake between two standard diets that contained 39% and 49% of crude protein. The same system allowed the evaluation of daily feeding and locomotor activity rhythms. Eighteen fish (654.44±26.85g) were distributed into six 250 L
An. Acad. Bras. Ciênc.. Publicado em: 27/04/2017
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10. Cytological aspects of incompatible and compatible interactions between rice, wheat and the blast pathogen Pyricularia oryzae
ABSTRACT Blast, caused by the fungus Pyricularia oryzae, is an important disease affecting rice and wheat yield worldwide. This study investigated the cytological aspects of incompatible (non-host resistance) and compatible (host resistance) rice- (R_Po) and wheat- (W_Po) Pyricularia oryzae isolate interactions. Inoculations of rice and wheat with the R_Po a
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-04
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11. Ghrelin and eating disorders
Background Ghrelin is a potent hormone with central and peripheral action. This hormone plays an important role in the regulation of appetite, food intake, and energy balance. Studies have suggested that ghrelin is involved with eating disorders (ED), particularly bingeing and purging. Genetic variants have also been studied to explain changes in eating beh
Arch. Clin. Psychiatry (São Paulo). Publicado em: 2015-04
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12. Effects of cholecystectomy on the changes of motility of Beagle dogs' sphincter of Oddi
PURPOSE: To observe the effect of cholecystectomy on the changes of motion pattern of Beagle dogs' sphincter of Oddi (SO), and investigate the modulatory role of nitric oxide (NO) and cholecystokinin (CCK) in the regulation of SO.METHODS: Pressure of common bile duct, SO motility, response to bolus injections of cholecystokinin (CCK, 20 ng/kg and 100 ng/kg),
Acta Cir. Bras.. Publicado em: 2014-04