Dispersivity
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. Efeito da velocidade de escoamento da solução e do comprimento da coluna de solo nos parâmetros de transporte de solutos em solos argiloso e arenoso / Effect of pore water velocity and the length of soil column on solute transportation parameters in clay and sandy soils
The effectiveness of the mathematical models developed to describe the solute transport in the soil depends on the reliability of the values of the transport parameters. Although the determination of these parameters use the same transport equation, some experimental conditions such as the column length and the pore water velocity does not have standards, ma
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/02/2011
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2. CaracterizaÃÃo hidrodispersiva de dois solos da regiÃo irrigada do Vale do SÃo Francisco / Characterization hidrodispersive of two soils of the irrigated region of the valley of the San Francisco
The hydrodispersive characterization of a Latosol and a Quartzarenic Neosol, both from the irrigated region of the SÃo Francisco Valley, was carried out in laboratory by means of assays of displacement of miscible liquids in columns of deformed soil. The assays were based on the displacement of a pulse of an amount of KBr equivalent to the volume of pores i
Publicado em: 2008
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3. Efeito da temperatura no transporte dos íons potássio e nitrato no solo / Effect of temperature on the transport of the potassium and nitrate ions in a soil
In the study of solute dynamics in porous media, it is of extreme importance the knowledge of the medium and transporting liquid properties as well as of external factors as temperature. In this sense, the objective of this work was the determination of parameters for potassium and nitrate ions under different temperatures in miscible displacement experiment
Publicado em: 2007
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4. Modelagem da dinâmica da água e do potássio na irrigação por gotejamento superficial. / Dynamics of water and potassium modeling under superficial trickle irrigation.
The technique of fertigation application is winning acceptance, mainly in trickle irrigation, due to the advantages that it presents as the possibility of controlling the nutrition of the plants, as the case of the potassium, that is one of the most used fertilizers. However, the description of the transport of water and solute under real conditions presents
Publicado em: 2005