Efforts to find solutions that can be used for verification of numerical techniques for solving the Richards equation have generated a wealth of approximate and exact analytical solutions. Coefficients of this equation involve two highly non-linear functions related to the soil water potential, the unsaturated hydraulic conductivity, and the soil water content. The known exact solutions for rea...

This paper investigates the environmental fate of radionuclide decay chains (specially the (238)U and (232)Th series) being released from a conventional mining installation processing ore containing natural occurring radioactive materials (NORMs). Contaminated waste at the site is being disposed off in an industrial landfill on top of a base of earth material to ensure integrity of the deposit ...

Since most people without access to safe water services live in remote areas of developing countries, assessing the economics of rural water developments poses a globally pressing challenge. This study seeks to: (1) outline the rural (non-networked) water development decision process in a systematic way; (2) incorporate that process into a modeling tool in order to conduct consistent economic a...

Se propone un esquema numérico explícito de 4 celdas (4C) para la integración las ecuaciones flujo en zona no saturada diseñado áreas llanura con niveles freáticos someros. El contempla coeficiente ponderación definir conductividad hidráulica representativa entre adyacentes y considera heterogeneidad cada horizonte edáfico. 4C es comparado estimaciones realizadas por el HYDRUS-1D dos grupos ens...

Abstract In arid and semi-arid regions, managing agricultural water for irrigation is essential to cope with scarcity maximize crop yields. this study, an experiment was conducted on a potato in the Manouba region (lower valley of Medjerda, Tunisia). The experimental protocol consisted four treatments utilizing water-saving techniques: FI (Full Irrigation 100%): 100% requirements. DI (Irrigatio...

Freshwater resources in the North China Plain (NCP) are near depletion due to the unceasing overexploitation of deep groundwater, by far the most significant source of freshwater in the region. To deal with the deepening freshwater crisis, brackish water (rich but largely unused water in agriculture) is increasingly being used in irrigation in the region. However, inappropriate irrigation with ...

The relative contributions to N leaching in turfgrass systems from over irrigation, fertilization, form, and soil texture, require characterization. In this study, water transport parameters were calibrated using an inverse simulation with a Kentucky bluegrass landscape. Subsequently those applied simulate use by tall fescue buffalograss turfgrasses numerical modeling. Using the hydraulic obtai...

The semi-arid regions of northeastern Brazil have historically suffered from water shortage. In this context, monitoring and modeling the soil moisture’s dynamics with hydrological models in natural (Caatinga) degraded (Pasture) is fundamental importance to understand processes. Therefore, work aims evaluate hydraulic parameters Caatinga Pasture areas using Hydrus-1D inverse method. Thus, five ...