Wind Risk
Mostrando 1-12 de 27 artigos, teses e dissertações.
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1. Wet Days in the Dry Quarter of the Alcântara Launch Center Region: Observational Features
ABSTRACT: Precipitation events are infrequent in the dry quarter (SON) of the Alcântara Launch Center (Centro de Lançamento de Alcântara, CLA), the main launch site of the Brazilian Space Program. However, their occurrence could be a risk for activities during launch missions. In this work, the observational features of wet days (daily precipitation total
J. Aerosp. Technol. Manag.. Publicado em: 18/07/2019
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2. Potential risk of drift from inclined fan nozzles
RESUMO O controle de pragas, doenças e plantas daninhas nas culturas de larga escala dependem da aplicação de produtos fitossanitários. Estas aplicações estão sujeitas a diversos fatores que podem levar à deriva. O objetivo deste trabalho foi avaliar a deriva de pontas de pulverização de jato plano inclinado. A deriva foi coletada em túnel de vent
Rev. bras. eng. agríc. ambient.. Publicado em: 2019-03
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3. POTENTIAL DRIFT AND INJURY OF HERBICIDES SPRAYED IN A WIND TUNNEL
ABSTRACT The possibility of synthetic auxin applications in crops increases the risk of injury to sensitive plants. The aim of this study was to quantify the drift of herbicides sprayed in a wind tunnel and the injury in cotton plants. The experimental design was a completely randomized design with five treatments and four replications. The tested spray solu
Eng. Agríc.. Publicado em: 2019-02
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4. Understanding heat stress in beef cattle
ABSTRACT Thermal stress is the result of a misbalance between heat produced or gained from the environment and the amount of heat lost to the environment. The level of thermal stress can range from minor or no effect to death of vulnerable animals. Under summertime conditions, thermal stress results in hyperthermia or heat stress. Heat stress in feedlot catt
R. Bras. Zootec.. Publicado em: 29/11/2018
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5. Dynamics of a Small Unmanned Aircraft Parachute System
ABSTRACT: Parachute Systems (PS) can be readily used by small Unmanned Aircraft Systems (UAS) for risk mitigation and aircraft recovery. To date there has been limited research into the fundamental dynamics of parachutes at low Reynolds numbers, with existing studies focusing on larger parachutes. An understanding of the dynamics is needed to establish sound
J. Aerosp. Technol. Manag.. Publicado em: 08/03/2018
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6. SPECTRUM, VELOCITY AND DRIFT OF DROPLETS SPRAYED BY NOZZLES WITH AND WITHOUT AIR INDUCTION AND MINERAL OIL
ABSTRACT The aim of this study was to evaluate the spectrum, the velocity and the potential drift risk of droplets sprayed by nozzles with and without air induction, with the addition of mineral oil to the spray solution. The experiment was conducted in a completely randomized design with five replications; in a factorial model 2 × 2 (two spray nozzles and
Eng. Agríc.. Publicado em: 2017-06
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7. Distributed generators performance during short-circuits considering fault ride-through requirements / Desempenho de geradores distribuídos durante curtos-circuitos considerando requisitos de suportabilidade a afundamentos de tensão = : Distributed generators performance during short-circuits considering fault ride-through requirements
The increase of distributed generation penetration in distribution systems not only helps to diversify the electrical matrix but also brings both technical and economic benefits. Yet, it also raises worries related to energy supply reliability. For wind power plants into the medium and high voltage networks there are the grid codes for "Fault Ride-Through" w
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/08/2012
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8. DECISION OF SEASONAL ADJUSTMENTS TO OPTIMIZE PORTFOLIO OF CONTRACTS WITH HYDROELECTRICS AND WIND FARMS IN BRAZIL / DECISÃO DE SAZONALIZAÇÃO PARA OTIMIZAR CARTEIRA DE CONTRATOS COM HIDRELÉTRICAS E EÓLICAS NO BRASIL
A Sazonalização é o processo de dividir as quantidades anuais de um contrato de fornecimento de energia elétrica em montantes mensais. Trata-se de flexibilidade contratual facultativa geralmente determinada ou imposta pelo agente comprador. A participação das usinas eólicas na matriz energética brasileira tem aumentado nos últimos anos, sendo a ener
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/04/2012
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9. Vulnerabilidade socioespacial relacionada a precipitações e ventos em Atibaia - SP / Sociospatial vulnerability related to precipitation and winds in Atibaia - SP
The accelerated process of urbanization of the twentieth century contributed to increase the occupation of risk areas, mainly by the low income population. This has increased their vulnerability to problems arising from atmospheric phenomena, especially in urban centers, which widened the sociospatial segregation in several municipalities. This framework is
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/08/2011
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10. Morfodinâmica associada entre duna, praia e zona submarina como subsídio a adequada ocupação do espaço costeiro na Praia do Peró - RJ. / Morphodynamics associated between dune, beach and underwater area as an aid to proper occupation of coastal space in Praia do Pero - RJ.
The coastline offers a veritable mosaic of diversity in coastal landforms, which enable the development of a number of different economic activities. Coastal environments are highly dynamic and involve a complex series of continental and oceanic processes. The beach of Pero, located between Cape Buzios and Cabo Frio, Rio coast, appears as an area distinct fr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/03/2011
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11. Project finance: a type of financing applied to wind Ceará / Project finance: uma modalidade de financiamento aplicada a energia eólica do Ceará
This work emphasizes the importance of the eolic energy and demonstrates the eolic potential technically profitable in the Ceará State. It specifically investigates a financial modality named Project Finance, through its definitions, risks, advantages and disadvantages. It also demonstrates the role played by the Project Finance as an alternative of long te
Publicado em: 2010
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12. MATRIZ ENERGÉTICA BRASILEIRA: IMPACTOS AMBIENTAIS E À SAÚDE
The Brazilian energy matrix is directly responsible for economic development, technology and science in the country. The diversity of the energy matrix of a country decreases the risk of energy crisis, since it does not depend on a single energy source, but a further another. Given this importance, this work aims to analyze the MEB and its impacts on the env
Publicado em: 2010