Power Distribution
Mostrando 1-12 de 654 artigos, teses e dissertações.
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1. TECHNICAL AND ECONOMIC FEASIBILITY OF USING A VARIABLE-FREQUENCY DRIVE IN MICRO-IRRIGATION SYSTEMS
ABSTRACT Irrigation is essential for the development of crops in regions with scarcity or irregular rainfall distribution, enabling high productivity. However, the use of water resources and electrical energy leads to a concern with irrigation efficiency. Pressure demand varies during the operations of irrigation systems and the appropriate pressure can be r
Eng. Agríc.. Publicado em: 2021-02
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2. Direct healthcare costs and their relationships with age at start of drug use and current pattern of use: a cross-sectional study
ABSTRACT BACKGROUND: It is well known that early start of drug use can lead users to psychosocial problems in adulthood, but its relationship with users’ direct healthcare costs has not been well established OBJECTIVES: To estimate the direct healthcare costs of drug dependency treated at a community mental health service, and to ascertain whether earl
Sao Paulo Med. J.. Publicado em: 2021-02
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3. INCREASED ENERGY COGENERATION IN THE SUGAR-ENERGY SECTOR WITH THE USE OF SUGARCANE STRAW, ELECTRIFICATION OF DRIVES, AND HIGH-DRAINAGE ROLLERS IN THE EXTRACTION
ABSTRACT The sugar-energy sector stands out in the production of electrical energy in the Brazilian energy matrix. The updating of Law 9,427 allowed increasing the limit of power injected in the transmission or distribution systems of existing projects from 30 to 50 MW, encouraging studies of expansion and/or implementation of new cogeneration projects. This
Eng. Agríc.. Publicado em: 2020-04
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4. SIMULATION AND EXPERIMENTAL INVESTIGATION OF POWER CONSUMPTION, GAS DISPERSION AND MASS TRANSFER COEFFICIENT IN A MULTI-PHASE STIRRED BIOREACTOR
Abstract Bio-oxidation leaching of refractory gold concentrate was carried out in a typical gas-liquid-solid three-phase stirred bioreactor. The bacteria, which adhered to solid particle surfaces and spread over the liquid phase, require sufficient oxygen and nutrient of carbon and nitrogen, and then the mass transfer rate should be considered. However, the
Braz. J. Chem. Eng.. Publicado em: 13/01/2020
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5. ANTROPOLOGÍA POLÍTICA DE LAS FINANZAS Y ANTROPOLOGÍA DEL DINERO
Resumo Este texto apresenta a antropologia do dinheiro de Keith Hart e sua relevância para uma antropologia política da indústria financeira. Hart considera que o dinheiro articula hierarquias sociais e desigualdades que conectam a experiência pessoal íntima com o resto da humanidade, e que a multiplicidade da violência e do potencial liberador dessas
Sociol. Antropol.. Publicado em: 20/12/2019
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6. ENERGY PERFORMANCE IN DISC HARROWING OPERATION IN DIFFERENT GRADIENTS AND GAUGES
ABSTRACT The operational performance of the agricultural tractor can be increased by adjusting parameters such as tire inflation pressure, axle mass distribution and gauge opening, which is a very divergent factor in controlled-traffic production. The objective of the experiment was to measure the energy performance of a 93 kW agricultural tractor in interme
Eng. Agríc.. Publicado em: 09/12/2019
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7. Distribuição espacial dos homicídios na cidade de Belém (PA): entre a pobreza/ vulnerabilidade social e o tráfico de drogas
Resumo A relação entre pobreza/vulnerabilidade social e a violência urbana tem sido objeto de inúmeros estudos no Brasil. Contudo, ocorreu um fenômeno aparentemente contraditório para essa explicação: houve melhoria de vários indicadores sociais no período 2000-2010, mas a incidência de homicídios, indicador fundamental da criminalidade violenta,
urbe, Rev. Bras. Gest. Urbana. Publicado em: 09/12/2019
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8. A Computational Framework for Daily Power Flow Analysis Considering Photovoltaic Distributed Generation
Abstract In Brazil, the demand for the acquisition and installation of photovoltaic systems has grown exponentially and, with that, the importance of studies considering their effects on the distribution grids power flow also grows. Due to the intermittent nature of photovoltaic generation, it is important to approach the analysis in a discrete way, taking i
Braz. arch. biol. technol.. Publicado em: 25/11/2019
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9. Integration of Renewable Energy Sources to Operate in Microgrids in Rural Zones in Brazil
Abstract In a world where technology is even more essential, quality and reliability of electrical system are fundamental. In Brazil, country where most of the energy is produced thought power plants, the existing distribution network is overwhelmed and the needs for the consolidation of distributed generation is growing. Wind and Solar power generation fro
Braz. arch. biol. technol.. Publicado em: 25/11/2019
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10. Public Policies to Be Implemented to Encourage the Use of Renewable Energy Sources in the Rural Area of Paraná
Abstract Around the world there’s a rising interest in the installation of renewable energy sources due to their ecological, economical, political and social advantages. In this article is studied specifically the case of the incentive towards the installation of these sources in the state of Parana’s rural area, where they wouldn’t just be ecological
Braz. arch. biol. technol.. Publicado em: 25/11/2019
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11. Capitais científicos em saúde coletiva: proposta de análise inspirada nas fontes utilizadas na obra Homo academicus
Resumo Espaço social de produção de saberes e práticas, a saúde coletiva (SC) é reconhecida por seus estudiosos como um campo, a partir da acepção de Pierre Bourdieu. O campo científico é um microcosmo social dotado de leis próprias, em que se inserem os agentes e as instituições que produzem/reproduzem/difundem a ciência. Este ensaio visa prop
Saude soc.. Publicado em: 07/10/2019
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12. Does the appointment of secretariesgeneral to lead global bureaucracies correlate with international power sharing? A longitudinal assessment based on empirical evidence from 1945 to 2016
Abstract This paper focuses on secretaries-general, given their relative centrality in international politics, as they embody the power to explore institutional and personal agendas, and enjoy the chance to seek prestige for a country or region. Through descriptive statistics, this article analyzes the distribution of secretaries-general per country, reachin
Rev. bras. polít. int.. Publicado em: 01/10/2019