Abstract Lagrangian methods, such as the random‐walk particle‐tracking (RWPT), are often qualified a potentially valuable alternative to error‐prone Eulerian methods for simulating solute transport in unsaturated porous media. Yet, RWPT method has not yet been validated against ‐ and compared currently used solutions under range of typical conditions. This paper presents new implementation appr...

Although soil water redistribution is critical for a number of problems, rather limited study this process has been reported up to now and especially as regards the implications hysteresis on horizontal after infiltration. To end, thorough theoretical numerical investigation redistributed content profiles formed cessation infiltration presented. A different initial contents before initiation de...

Abstract There has been widespread interest in using compost to improve the hydrologic functions of degraded soils at construction sites for reducing runoff and increasing infiltration. The objective this study was determine effects amendment rate on saturated hydraulic conductivity ( K s ) water retention order identify target rates enhancing soil functions. Samples were prepared with three te...

Dyes like Brilliant Blue have similar adsorptive behaviour as some organic contaminants, e.g., pesticides. Bromide ions, on the other hand, move much like NO3-N (fertilizer) in soil. Consequently, by using these two tracers, it is possible to in a general way mimic how organic contaminants and fertilizers may move through soils. Three plots with sandy soil in semiarid Tunisia were irrigated dur...

The effects of canopy evaporation and intensity smoothing during rain events on hillslope subsurface stormflow are poorly understood. While watershed manipulation experiments have suggested that these processes are important at long timescales, such processes may also be important in storm-timescale responses. Notwithstanding, there are few hillslopes for which both internal subsurface stormflo...

PURPOSE An intracanalicular scaffold (Hydrus microstent) designed to reduce intraocular pressure as a glaucoma treatment was tested in human anterior segments to determine changes in outflow facility (C). METHODS Human eyes with no history of ocular disease or surgeries were perfused within 49 hours of death. The anterior segments were isolated and connected to a perfusion system. Flow rates ...

The water retention curve (WRC) of arable soils from the southeastern United States at different levels compaction (no compaction, and 10 20% increases in soil bulk density) was estimated using van Genuchten–Mualem (VG) model. VG parameters noncompacted were obtained first by fitting measured hydraulic data. To construct WRC compacted soils, gravimetric values permanent wilting point (?gw, 1,50...

Europe. A total of 660, 522, and 4940 soil samples belonging to GRIZZLY, HYPRES, EU-HYDI databases, respectively, were used for parametric evaluation. The water retention hydraulic conductivity functions are crucial input information land surface models. Determining these by using direct methods is hampered excessive time unaffordable costs required field activities laboratory analyses. Pedotra...