. . "Perkola\u010Dn\u00ED teorie a jej\u00ED vyu\u017Eit\u00ED pro interpretaci reten\u010Dn\u00ED \u010D\u00E1ry p\u016Fdn\u00ED vlhkosti"@cs . "Trieste" . . "1"^^ . . "Perkola\u010Dn\u00ED teorie a jej\u00ED vyu\u017Eit\u00ED pro interpretaci reten\u010Dn\u00ED \u010D\u00E1ry p\u016Fdn\u00ED vlhkosti"@cs . "1"^^ . "Kode\u0161ov\u00E1, Radka" . . . . . "Z(MSM 412100004)" . "Pore-size analysis, images of soil structure, mono-modal and bi-modal porous system, soil water retention curve, percolation theory, two-phase displacement"@en . "209;220" . "ictp lecture notes, 18" . . . "The Abdus Salam International Centre for Theoretical Physics" . . "92-95003-26-8" . . . "41210" . . "The soil porous system has traditionally been deduced from the soil-water retention curve with the assumption of homogeneity and free accessibility of pores, defined as capillary tubes,from the sink /source of water. But real soil fabric is modeled as a homogeneous one. To examine the differences between homogeneous and heterogeneous soil porous systems, we studied two types of soils: sandy soil and coarse sandy soil. We applied image processing filters and the ARC/info gRID module to analyze pore sizes in both soils from their electron microscope images taken at two diffeent magnifications. We used the resulting pore-size distribution data to generate 3-D porous media consisting of pores and throats. The homogeneous pore structure was created as a mono-modal por-throat network with one pore-size distribution. The heterogeneous por structure was designed as a bi-modal pore-throat network with two por-size distributions, where the pore sizes were hierarchically arranged in the modes of the network. We" . "Percolation Theory and its Applicaton for Interpretation of Soil Water Retention Curves" . . "Percolation Theory and its Applicaton for Interpretation of Soil Water Retention Curves"@en . . . "RIV/60460709:41210/04:6616!RIV/2005/MSM/412105/N" . "Invited Presentations College on Soil Physics" . "The soil porous system has traditionally been deduced from the soil-water retention curve with the assumption of homogeneity and free accessibility of pores, defined as capillary tubes,from the sink /source of water. But real soil fabric is modeled as a homogeneous one. To examine the differences between homogeneous and heterogeneous soil porous systems, we studied two types of soils: sandy soil and coarse sandy soil. We applied image processing filters and the ARC/info gRID module to analyze pore sizes in both soils from their electron microscope images taken at two diffeent magnifications. We used the resulting pore-size distribution data to generate 3-D porous media consisting of pores and throats. The homogeneous pore structure was created as a mono-modal por-throat network with one pore-size distribution. The heterogeneous por structure was designed as a bi-modal pore-throat network with two por-size distributions, where the pore sizes were hierarchically arranged in the modes of the network. We"@en . "Percolation Theory and its Applicaton for Interpretation of Soil Water Retention Curves" . "RIV/60460709:41210/04:6616" . "12"^^ . "The soil porous system has traditionally been deduced from the soil-water retention curve with the assumption of homogeneity and free accessibility of pores, defined as capillary tubes,from the sink /source of water. But real soil fabric is modeled as a homogeneous one. To examine the differences between homogeneous and heterogeneous soil porous systems, we studied two types of soils: sandy soil and coarse sandy soil. We applied image processing filters and the ARC/info gRID module to analyze pore sizes in both soils from their electron microscope images taken at two diffeent magnifications. We used the resulting pore-size distribution data to generate 3-D porous media consisting of pores and throats. The homogeneous pore structure was created as a mono-modal por-throat network with one pore-size distribution. The heterogeneous por structure was designed as a bi-modal pore-throat network with two por-size distributions, where the pore sizes were hierarchically arranged in the modes of the network. We"@cs . . "Percolation Theory and its Applicaton for Interpretation of Soil Water Retention Curves"@en . "579084" . "[A53C060E219A]" .