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	Provedor de dados CIGR Journal (1) Chilean J. Agric. Res. (1) Rev. Bras. Ciênc. Solo (1) Autor Camacho-Tamayo,Jesus H (1) Fasinmirin, Johnson Toyin (1) Leão,Tairone Paiva (1) Olorunfemi, Idowu Ezekiel (1) Olufayo, Ayorinde Akinlabi (1) Orjuela-Matta,Helber Milton (1) Perfect,Edmund (1) Rubiano Sanabria,Yolanda (1) Taiwo, Adeyemi Akinjide (1) Mais... Palavra-chave Sorptivity (3) Hydraulic conductivity (2) Cantor bar (1) Cumulative infiltration (1) Fractal model (1) Geostatistics (1) Hydrus 2D (1) Infiltration (1) Numerical modeling (1) Soil physics (1) Soil water movement (1) Total porosity (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Journal article (1) Ano 2016 (1) 2012 (1) 2010 (1) País Brazil (1) Chile (1) China (1) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Modeling water movement in horizontal columns using fractal theory Rev. Bras. Ciênc. Solo Leão,Tairone Paiva; Perfect,Edmund. Fractal mathematics has been used to characterize water and solute transport in porous media and also to characterize and simulate porous media properties. The objective of this study was to evaluate the correlation between the soil infiltration parameters sorptivity (S) and time exponent (n) and the parameters dimension (D) and the Hurst exponent (H). For this purpose, ten horizontal columns with pure (either clay or loam) and heterogeneous porous media (clay and loam distributed in layers in the column) were simulated following the distribution of a deterministic Cantor Bar with fractal dimension H" 0.63. Horizontal water infiltration experiments were then simulated using Hydrus 2D software. The sorptivity (S) and time exponent (n) parameters of the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Numerical modeling; Hydrus 2D; Fractal model; Cantor bar; Sorptivity; Soil physics. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000400042 Spatial analysis of soil hydraulic properties of an alfisol in Akure, Southwestern Nigeria CIGR Journal Olorunfemi, Idowu Ezekiel; Taiwo, Adeyemi Akinjide; Olufayo, Ayorinde Akinlabi; Fasinmirin, Johnson Toyin. The knowledge of soil hydraulic properties and processes leads to better predictions of both agricultural and environment impact. The objectives of this research are to determine, predict and compare the relationship between measured and estimated soil hydraulic properties and also spatially characterize these properties using geostatistics. Mini disc infiltrometer at a suction rate of 2 cm per second was used for the determination of soil hydraulic properties at different points of an alfisol in Nigeria. Soil samples (100, 200 and 300 mm depths) were also analyzed to determine soil bulk density (BD), total porosity (PT) and water holding capacity (WHC). The coefficients of variation (CV) of the textural classes indicate a non-considerable variability of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Sorptivity; Cumulative infiltration; Hydraulic conductivity; Soil water movement; Total porosity. Ano: 2016 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3418 Spatial Analysis of Infiltration in an Oxisol of the Eastern Plains of Colombia Chilean J. Agric. Res. Orjuela-Matta,Helber Milton; Rubiano Sanabria,Yolanda; Camacho-Tamayo,Jesus H. Studies that involve soil attributes variability help the analysis of the behavior of hydrophysical attributes in space, to support the decision-making process within the conception of precision agriculture. The aim of the present paper was to characterize the spatial variability of the surface infiltration and its relation to some soil physical attributes. The sampling was done with a rectangular mesh of 64 points with perpendicular distances of 52 m x 45 m between sampling points. The attributes studied were bulk density, contents of sand, silt and clay, soil moisture, cumulative infiltration, basic infiltration, sorptivity, and saturated hydraulic conductivity (Ks). Data were analyzed using descriptive statistics and geostatistics, identifying the... Tipo: Journal article Palavras-chave: Geostatistics; Hydraulic conductivity; Infiltration; Sorptivity. Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000300015 Registros recuperados: 3 Primeira ... 1 ... Última

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