Precipitation Fields
Mostrando 1-12 de 37 artigos, teses e dissertações.
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1. The Stabilization of Asphaltenes in Different Crude Fractions: A Molecular Approach
The conditions of petroleum extraction may allow asphaltenes to precipitate, causing deposition that clogs wells, pipes and equipment, consequently reducing productivity. In this work, the solubility parameters and precipitation onset of polar fractions of heavy crudes from Brazilian fields were estimated using a simplified system of n-heptane/toluene mixtur
J. Braz. Chem. Soc.. Publicado em: 2021-04
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2. Production regions, physical and physiological quality of Brachiaria brizantha cv. BRS 'Piatã' seeds
RESUMO A qualidade das sementes é influenciada pelas condições climáticas do campo de produção. A identificação das características dos melhores campos de sementes de forrageiras permite o aprimoramento do setor. Neste estudo, objetivou-se identificar características climáticas das regiões produtoras que podem afetar as qualidades física e fisio
Rev. Ciênc. Agron.. Publicado em: 04/11/2019
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3. Efecto de la sustitución de V por Ti sobre las temperaturas de transformación de fase y el desajuste de red matriz/precipitado en la superaleación 76Fe-12Al-12V
ABSTRACT Fe-Al based alloys have a remarkable potential for high temperature structural applications, provided that the limitation of their low creep resistance is solved. Third element addition (Nb, Ti, Zr or Ta) has proven to per-form the task, at the expense of a low ductility. In previous works we have investigated ferritic alloys in the Fe-Al-V system w
Matéria (Rio J.). Publicado em: 19/07/2018
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4. Comportamiento reológico del aluminio AA6061 por efecto de las transformaciones de fase activadas térmicamente
ABSTRACT Aluminum alloys at room temperature not experience significant rheological behavior due to its coherent microstructural order, and its high compactness. However, the increase of the temperature generates stress fields, and thereby deformations, that alter the microstructural equilibrium, manifesting the rheological behavior as consequence of the int
Matéria (Rio J.). Publicado em: 22/06/2017
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5. THE EFFECT OF SYSTEM TEMPERATURE AND PRESSURE ON THE FLUID-DYNAMIC BEHAVIOR OF THE SUPERCRITICAL ANTISOLVENT MICRONIZATION PROCESS: A NUMERICAL APPROACH
Abstract The Supercritical Antisolvent (SAS) technique allows for the precipitation of drugs and biopolymers in nanometer size in a wide range of industrial applications, while guaranteeing the physical and chemical integrity of such materials. However, a suitable combination of operating parameters is needed for each type of solute. The knowledge of fluid d
Braz. J. Chem. Eng.. Publicado em: 2016-03
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6. Strawberry yield efficiency and its correlation with temperature and solar radiation
The impact that future climatic conditions will have on agricultural productivity depends on the sensitivity to each environmental factor and relative changes in temperature, precipitation and UV-B radiation. The strawberry (Fragaria x ananassa) is a microclimatic crop cultivated almost worldwide and Spain is the world's second-largest strawberry producer af
Hortic. Bras.. Publicado em: 2013-03
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7. Purification of trypsin inhibitor from seeds of Cicer arietinum (L.) and its insecticidal potential against Helicoverpa armigera (Hübner)
Trypsin inhibitors (TI) have crucial functions in plant defense against pests, and recent studies reveal their diversity in stress response. Disease and herbivore infestations are harmful to plant growth, but the response of TI in Cicer arietinum (L.) in Central India has been less studied. In the present study, we partially characterized the TI from Cicer a
Theor. Exp. Plant Physiol.. Publicado em: 2013
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8. Verificação da previsão do tempo em São Paulo com o modelo operacional WRF / Review of weather in São Paulo with the WRF Operational Model.
Forecasts of daily maximum and minimum temperatures and rainfall performed by the operational numerical weather prediction WRF (Weather Research Forecasting) model in the São Paulo are evaluated. Initial and boundary conditions provided by the 00UTC Global Forecast System (GFS) Model and WRF run for 72 hours, with two nested grids (with horizontal grid spac
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/11/2012
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9. Contribuição dos Distúrbios Ondulatórios de Leste para a chuva no Leste do Nordeste do Brasil: evolução sinótica média e simulações numéricas / Easterly Waves contribution for the eastern Northeast Brazil precipitation: mean synoptic evolution and numerical simulations
This study purpose was to verify the contribution of Easterly Wave Disturbances (EWDs) in the observed precipitation over the eastern part of Northeast Brazil (ENEB) during rainy season (AMJJ) and evaluate seasonal rainfall forecasts from RegCM3 (Regional Climate Model version 3). For the EWDs subjective identification it was used infrared satellite images a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/06/2011
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10. Boletim agrometeorológico do ano de 2006 para a estação principal da Embrapa Cerrados em Planaltina, DF.
ABSTRACT: The objetive of this paper was subsidized the researches developed in the experimental fields carried out in Embrapa Cerrados and regional meteorological and biometeorological studies. The daily meteorological data of the main agrometeorological station are presented in tables and the monthly averages variations in the year and in the historical se
Planaltina. Publicado em: 2011
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11. Eventos extremos de precipitação no leste da Amazônia. / Extreme events of rainfall in Eastern Amazon.
The aim of this study was to characterize the extreme events of rainfall in Eastern Amazon, to analyze on ocean-atmosphere conditions in global scale associated with intense occurrence periods of these events, to contribute for temporal variation comprehension of rainfall extreme events, as well as of determinant phenomena to its occurrence and to make furth
Publicado em: 2010
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12. FOREST FIRES IN MOUNTAIN NATIONAL PARK OF ITABAIANA - SERGIPE. / INCÊNDIOS FLORESTAIS NO PARQUE NACIONAL SERRA DE ITABAIANA SERGIPE.
This research was developed with the objective to determine the forest fire danger index that is the most efficient to predict forest fire inside the National Park Serra de Itabaiana. It also simulates the characteristics of the fire inside each type of vegetation, in order to characterize the risk in each situation. To simulate the forest fires, was used th
Publicado em: 2010