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Mostrando 13-24 de 7731 artigos, teses e dissertações.
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13. Single Port Multimode Reconfigurable UWB-NB Antenna for Cognitive Radio Applications
Abstract In this paper, a compact, single port, multimode reconfigurable UWB-NB antenna with a novel feeding network is presented. The proposed antenna consists of a pentagonal-shaped monopole radiator, a beveled-shaped partial defected ground plane with a rectangular slot, and a reconfigurable bypass feeding network. The antenna realizes a wideband frequenc
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2022
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14. Psychiatric emergency units in Brazil: a cross-sectional study
SUMMARY OBJECTIVES: This study aimed to identify the infrastructure (e.g., availability, resources, and staff), basic metrics, and problems (e.g., network, overcrowding, resources, and infrastructure) of the psychiatric emergency services in Brazil. METHODS: This is a cross-sectional study assessing psychiatric services (n=29) listed by the Brazilian Psych
Revista da Associação Médica Brasileira. Publicado em: 2022
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15. Identifying olive oil fraud and adulteration using machine learning algorithms
As olive oil (OO) is more expensive than other vegetable oils, it is usually adulterated by blending it with more economic edible oils such as cottonseed oil (CSO), canola oil (CO), and soybean oil (SO). This research aimed to determine the fatty acid compositions obtained as a result of blending different proportions of CSO, CO and SO with OO using a gas ch
Química Nova. Publicado em: 2022
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16. Effects of imipenem combined with glutamine in the treatment of severe acute pancreatitis with abdominal infection in mainland China: a meta-analysis
SUMMARY OBJECTIVE: The aim of this study was to explore the efficacy of imipenem combined with glutamine in the treatment of severe acute pancreatitis with abdominal infection in mainland China using meta-analysis. METHODS: We searched China National Knowledge Network, Wanfang Medical Network, Chinese Science Citation Database, PubMed, and Embase Databases
Revista da Associação Médica Brasileira. Publicado em: 2022
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17. ADDITION OF NATURAL EXTRACTS WITH ANTIOXIDANT PROPERTIES IN BIODIESEL: ANALYSIS BY NEURAL NETWORKS OF THE MULTILAYER PERCEPTRON TYPE
Biodiesel is capable of replacing diesel because it has similar physicochemical properties, but this biofuel is susceptible to oxidation, which makes the application of antioxidant substances necessary. For this study, alcoholic extracts of senna leaves, hibiscus flowers, and blackberry were used. Biodiesel samples were submitted to physicochemical analysis
Química Nova. Publicado em: 2022
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18. Classificação da capacidade produtiva com alturas de árvores dominantes estimadas por RNA
Resumo A construção de curvas de sítio a partir da modelagem da altura de árvores dominantes medidas em parcelas permanentes em diferentes idades, considerando uma idade de referência, se constitui no método mais prático e difundido no meio florestal para classificar a capacidade produtiva local. Dentro de um processo de Planejamento Florestal, o grau
Ciência Florestal. Publicado em: 2022
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19. Comparison of efficacy of three commonly used alpha-blockers as medical expulsive therapy for distal ureter stones: A systematic review and network meta-analysis
ABSTRACT Introduction: The efficacy of alpha-blockers as medical expulsive therapy (MET) is well established. However, it is not known which of the three most commonly used alpha-blockers (tamsulosin, alfuzosin and silodosin) is the most efficacious. With this study we aimed to assess the efficacy of the three commonly used alpha-blockers as MET for distal
International braz j urol. Publicado em: 2022
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20. Recent dengue virus infection: epidemiological survey on risk factors associated with infection in a medium-sized city in Mato Grosso
ABSTRACT BACKGROUND: Dengue is considered to be the most important arbovirus worldwide, with important complications that increase its lethality. In Brazil, an endemic country, the disease reaches significant incidence levels, with occurrences of serious cases and high costs of hospitalizations for its treatment. OBJECTIVE: To analyze risk factors among in
Sao Paulo Medical Journal. Publicado em: 2022
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21. A global player from the South: the Jardín Zoológico de Buenos Aires and the transnational network of zoos in the early twentieth century
Resumo Sob a direção de Clemente Onelli (1904-1924), o Jardín Zoológico de Buenos Aires se tornou uma importante atração pública e ganhou reputação internacional por suas inovações no abrigo e fornecimento de fauna latinoamericana. Era uma instituição híbrida que combinava instrução pública, pesquisa zoológica e aclimatação de animais út
História, Ciências, Saúde-Manguinhos. Publicado em: 2022
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22. Conception of workers in a municipal health network about the service-management relationship
Resumo Objetivou-se compreender as concepções de profissionais de saúde sobre a relação de uma gerência com os diversos serviços que compõem a rede de saúde pública de um município da região sudeste do Brasil. Utilizou-se da técnica do Grupo Focal (GF) para a coleta de dados. Foram realizados três GF com a composição média de 12 participante
Psico-USF. Publicado em: 2022
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23. CHARACTERIZATION OF GEOSPATIAL, MORPHOMETRIC, AND ENVIRONMENTAL DYNAMICS OF THE MARIANA MICROBASIN IN ALTA FLORESTA-MT, BRAZIL
ABSTRACT River basin environmental diagnosis and monitoring are fundamental for water resource use and conservation plans, as these systems integrate different landscape elements and may undergo impacts and changes of different levels and scales. In this context, this work aimed to characterize the geospatial, morphometric, and environmental dynamics in the
Engenharia Agrícola. Publicado em: 2022
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24. Public policies for school network planning in Portugal: changes in municipal responsibilities and choices
Resumo Em Portugal, a apresentação, em 2003, da carta educativa como instrumento de planeamento prospetivo da rede escolar representou o início de uma fase diferente nas políticas públicas de Educação, que permitiu a requalificação da rede escolar pública do 1.º ciclo do Ensino Básico. Mais de uma década depois, no início de um novo ciclo nas p
Ensaio: Avaliação e Políticas Públicas em Educação. Publicado em: 2022