Energy And Co2 Fluxes
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. Metabolic regulation during sport events: factual interpretations and inadequate allegations
Different fuels are available to generate ATP for muscle activities during sport events. Glycogen from striated muscles and liver stores may be converted to lactic acid or almost completely oxidized to carbon dioxide (CO2), triacylglycerol within the muscle itself and fatty acids from adipose tissue could be converted to CO2 in acting muscles, some free amin
Rev. bras. educ. fís. esporte. Publicado em: 06/09/2013
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2. TURBULENT EXCHANGE OF SCALARS ABOVE AND WITHIN AN ARAUCARIA FOREST IN SOUTHERN BRAZIL / TROCAS TURBULENTAS DE ESCALARES ACIMA E NO INTERIOR DE UMA FLORESTA DE ARAUCÁRIA NO SUL DO BRASIL
Turbulent exchange of scalars is analyzed for a year of turbulence data, above and within an Araucaria Forest in southern Brazil. Sensible and latent heat fluxes, as well as CO2 fluxes are calculated by the eddy covariance method and analyzed in terms of the seasonal variation of their daily cycles. Diurnal and nocturnal vertical velocity spectra, sensible a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/07/2011
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3. Biomass thermal storage rates and surface energy balance to Amazonian rainforest areas / Taxas de armazenamento térmico na biomassa e balanço de energia em superfície para áreas de floresta de terra firme na Amazônia
Avaliaram-se as características das densidades de fluxo de energia sobre dois sítios de floresta de terra firme da Amazônia, evidenciando o papel de cada componente no fechamento do balanço de energia local, com particular ênfase nas taxas de armazenamento térmico de energia acima do solo. Para esta análise, coletaram-se dados em duas Reservas Biológ
Publicado em: 2009
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4. Caracterização infravermelho e distribuição espectral de energia para as estrelas com planetas
In this work we study the behavior of the stars belonging to planetary systems in what concern implications its infrared characteristics and the spectral energy distribution (SED). Our study is based on detailed analysis of the behavior on the infrared emission for 48 stars with planets, classied as stars on the main sequence, subgiants and giants. The data
Publicado em: 2008
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5. Balanço de radiação, energia e fluxo de CO2 em ecossistema de manguezal na Amazônia / Radiation and energy balance and fluxes of CO2 in a Amazon mangrove ecosystem
This work use the longest series of continuous meteorological data and fluxes measurements of CO2, sensible heat and latent heat made in Amazon mangrove ecosystem. The series used in this study corresponds to the period of November, 2002 to August, 2003. The meteorological data were collected using an EDISOL system based on the hedí covariance technique. Th
Publicado em: 2006
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6. Interaction between terrestrial ecosystems and the atmosphere in Amazonia: biogeophysical and biogeochemical connections / Interação entre ecossistemas terrestres e a atmosfera na Amazônia: conexões biogeofísicas e biogeoquímicas
The Amazon is considered by many one of the most important areas of the planet, including extensive areas of tropical forest. However, the forest has been dramatically modified by the deforestation changes in the CO2 concentration night also affect the forest structure. This work aims at better understand the biosphere-atmosphere interaction in the Amazonian
Publicado em: 2006
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7. An analysis of surface fluxes and of the microclimate on cerrado, sugarcane and eucalyptus: implications for regional climate changes / Uma análise dos fluxos de superfície e do microclima sobre cerrado, cana-de-açúcar e eucalipto, com implicações para mudanças climáticas regionais
This work investigates potential regional scale temperature and precipitation changes in the São Paulo state, caused by land use changes. We analised micrometeorological measurements, in the period February 2005 to February 2006, over three different ecosystems (cerrado, sugar cane and eucalyptus plantation). The surface energy balances showed that over the
Publicado em: 2006
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8. Functionality and seasonality on Cerrado and ecotone Forest-Cerrado: an inquiry with micrometeorological data of energy and CO2. / Funcionalidade e sazonalidade sobre cerrano e sobre ecótono floresta-cerrado: uma investigação com dados micrometeorológicos de energia e CO2.
This work discusses the energy and CO2 flux variability over a Cerrado Sensu stricto, in São Paulo state, Brazil, and over a seasonally inundated Forest-Cerrado ecotone in Tocantins state, Brazil. Micrometeorological measurements (30 minute average) of weather (temperature, relative humidity, precipitation and wind speed), radiation fluxes (solar radiation,
Publicado em: 2004
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9. Does Long-Term Elevation of CO2 Concentration Increase Photosynthesis in Forest Floor Vegetation? (Indiana Strawberry in a Maryland Forest).
As the partial pressure of CO2 (pCO2) in the atmosphere rises, photorespiratory loss of carbon in C3 photosynthesis will diminish and the net efficiency of light-limited photosynthetic carbon uptake should rise. We tested this expectation for Indiana strawberry (Duchesnea indica) growing on a Maryland forest floor. Open-top chambers were used to elevate the
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10. Reduced Expression of Aconitase Results in an Enhanced Rate of Photosynthesis and Marked Shifts in Carbon Partitioning in Illuminated Leaves of Wild Species Tomato1
Wild species tomato (Lycopersicon pennellii) plants bearing a genetic lesion in the gene encoding aconitase (Aco-1; aconitate hydratase EC 4.2.1.3) were characterized at molecular and biochemical levels. The genetic basis of this lesion was revealed by cloning the wild-type and mutant alleles. The mutation resulted in lowered expression of the Aco-1 transcri
The American Society for Plant Biologists.
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11. Exploring the Limits of Crop Productivity 1: I. Photosynthetic Efficiency of Wheat in High Irradiance Environments
The long-term vegetative and reproductive growth rates of a wheat crop (Triticum aestivum L.) were determined in three separate studies (24, 45, and 79 days) in response to a wide range of photosynthetic photon fluxes (PPF, 400-2080 micromoles per square meter per second; 22-150 moles per square meter per day; 16-20-hour photoperiod) in a near-optimum, contr
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12. Quantitative Assessment of Oxygen Availability: Perceived Aerobiosis and Its Effect on Flux Distribution in the Respiratory Chain of Escherichia coli
Despite a large number of studies on the role of oxygen in cellular processes, there is no consensus as to how oxygen availability to the cell should be defined, let alone how it should be quantified. Here, a quantitative definition for oxygen availability (perceived aerobiosis) is presented; the definition is based on a calibration with reference to the min
American Society for Microbiology.