Cold Front
Mostrando 1-12 de 31 artigos, teses e dissertações.
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1. Simultaneous Determination of Furan and Vinyl Acetate in Vapor Phase of Mainstream Cigarette Smoke by GC-MS
ABSTRACT A simple and sensitive method for simultaneous determination of furan and vinyl acetate (VA) in vapor phase of mainstream cigarette smoke with cold trap and gas chromatography-mass spectrometry (GC-MS) was developed. A Cambridge filter pad (CFP) was placed in front of the impingers of smoking machine to remove the particle phase from cigarette smoke
An. Acad. Bras. Ciênc.. Publicado em: 04/05/2017
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2. Caracterização da influência de sistemas frontais sobre a qualidade da água do reservatório de Itumbiara, GO, utilizando dados de sensoriamento remoto e dados in situ / Characterization of frontal systems influence on water quality of Itumbiara reservoir, GO, Brazil, using remote sensing and in situ data
In addition to human activities the water quality in reservoirs is influenced by weather and climate forcings that determine spatial and temporal variations in these systems. Conventional techniques for water quality monitoring require large time and fund investments. The synoptic view of large areas and high temporal frequency remote sensing data provides a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/09/2011
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3. Infrared thermography applied to the evaluation of metabolic heat loss of chicks fed with different energy densities
Brazil must comply with international quality standards and animal welfare requirements in order to maintain its position as world's largest exporter of poultry meat. With the scenario of global climate change there is the forecast of occurrence of extreme events with characteristics of both excess cold and heat for several regions of the country. This study
Revista Brasileira de Ciência Avícola. Publicado em: 2011-06
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4. Influência das frentes frias nos mecanismos de funcionamento da represa da UHE Carlos Botelho (Lobo/Broa) Itirapina SP, dos pontos de vista químico, físico e biológico
In Brazil there is a numerical predominance of river systems, which favors the construction of reservoirs. These reservoirs have great ecological, economic and social significance, so, the management, conservation and recovery of these systems are of fundamental importance with repercussions on the economy, social work and the uses of aquatic systems. Climat
Publicado em: 2010
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5. Análise dinâmica, termodinâmica e microfísica de uma linha de instabilidade com o radar meteorológico móvel MXPOL / Microphysical, dynamic and thermodynamic analysis of a squall line using the mobile meteorological radar MXPOL
A prefrontal squal line (LI) that reached tne metropolitan area of São Paulo on April 26 2007 was monitored and analyzed by means of of surface and upper air measurements, weather radar and satellite data. Analyses indicate a favorable synoptic environment to form and sustain the LI. In its genesis region there was relatively warm and moiture air near the s
Publicado em: 2010
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6. NUMERICAL MODELING OF SEWAGE PLUME DISPERSION FOR THE SANTOS OUTFALL / Modelagem numérica da dispersão da pluma do emissário submarino de Santos
Sewage plume dispersion for the Santos outfall was studied using numerical models, coupling hydrodynamic, near field and far field models. Experiments were conducted for the 1979 original outfall design, for the new 2009 outfall configuration and also for a third arrangement suggested here, which duplicates the emissary length comparatively to the original 1
Publicado em: 2009
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7. Precipitation forecast aided by weather radar for early warning system of urban floods / Previsão de chuva com auxílio de radar de tempo visando a um sistema de alerta antecipado de cheias em áreas urbanas
To reduce human and material losses during floods it is feasible to concisely study the rainfall forecast as the main part of an early warning system. The use of weather radar information, when linked to physically-based forecast models, can contribute for monitoring and forecasting of intense rainfall episodes. Thus, the rainfall forecast, based on using of
Publicado em: 2009
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8. Plum tree organic cultivation in Delfim Moreira MG / Cultivo orgÃnico de ameixeiras em Delfim Moreira - MG
In front of this big population conscience movement about the organic products benefits, the demand these certificate products is increasing. However, the offer hasnât accompanied the market demand, originating, this way, good opportunities for the organic production development, mainly fruits, that are in incipient period in Brazil. The present work was re
Publicado em: 2009
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9. Steam and nitrogen injection in improved heavy oil recovery / Injeção de vapor e nitrogenio na recuperação melhorada de oleo pesado
Thermal recovery methods, especially steam injection, are at the forefront of most onshore projects of heavy oil. The continuous injection and, recently, the steam assisted gravity drainage yield high recoveries. The ratio of the volume of steam injected per volume of produced oil is a decisive parameter in the success of steam flood projects. In the present
Publicado em: 2009
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10. Resposta da Plataforma Continental Sudeste a ventos sazonais e sinóticos de verão: estudos numéricos / Response of the South Brazil bight to summer seasonal and synoptic winds: numerical studie
In order to study the pertubations caused on the South Brazil Bigth (SBB) caused by the passage of a cold front during Summer, a mean basic state for currents was obtained using the POM (Princeton Ocean Model) through diagnostic simulation, followed by a short round prognostic. The mean currents modeled are in certain instancies similar to the currents measu
Publicado em: 2008
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11. Space-temporal variability of chlorophyll-a concentration and sea surface temperature estimated from satellite in the Brazilian Southeast Continental Margin / Variabilidade espaço-temporal da concentração de clorofila-a e temperatura da superfície do mar estimadas por satélite na Margem Continental Sudeste Brasileira
The objective of this work was to analyze the space-temporal variability of the chlorophyll-a concentration (Chl) and the sea surface temperature (SST) in the Brazilian Southeast Continental Margin (BSCM), between jan/1998 and dec/2006. Images from SeaWiFS e AVHRR were used for the extraction of the Chl and SST data respectively. Besides, Southeast Oscillati
Publicado em: 2008
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12. Poverti combat and development : theoretical impasses on present social policy construction / Combate a pobreza e desenvolvimento humano : impasses teoricos na construção da politica social na atualidade
The thesis presents an analysis about theoretical foundations which guide social policies, observing, particularly, the meaning of poverty combat centrality on the conduction of priorities in contemporary social international agenda, signalizing which symbolic and material conditions instruct the transformation of social question theoretical status and its o
Publicado em: 2008