Some of the highest losses of nitrate to surface waters come from drained agricultural land. Given previous this article studied for Belgian farming conditions (i) the effect of subsurface drainage density on nitrate losses and (ii) the economics of nitrate emissions, using the nitrogen version of DRAINMOD (Brevé et al., 1997 a and b). DRAINMOD (Skaggs, 1997) was used to simulate the performanc...

The difference between average pressures of two immiscible fluids is commonly assumed to be the same as macroscopic capillary pressure, which is considered to be a function of saturation only. However, under transient conditions, a dependence of this pressure difference on the time rate of saturation change has been observed by many researchers. This is commonly referred to as dynamic capillari...

the momentum equation in the kinematic wave model is a power-law equation with two parameters. these parameters, which relate the discharge to the flow area, are commonly derived using manning’s equation. in general, the values of these parameters depend on the flow depth except for some special cross sections. in this paper, improved estimates of the kinematic wave parameters for circular chan...

Urban flooding is a complex natural hazard, driven by the interaction between several parameters related to urban development in context of climate change, which makes it highly variable space and time challenging predict. In this study, we apply multivariate analysis method (PCA) four machine learning algorithms investigate map variability vulnerability floods city Tangier, northern Morocco. T...

foaming conditions of the red beet (beta vulgaris l) puree were optimized using response surface methodology (rsm) with respect to arabic gum concentrations (0.01 – 0.4% w/w), red beet puree (40 _ 60% w/w),egg white concentration( 5 _ 15% w/w) and whipping time (3 – 9 min) for minimum foam density and foam drainage volume as response variables. foams were prepared from various pulp concentratio...

The structure of permeable concrete has been the primary reason for its use in construction. Permeable is composed water, cement, aggregate, and little- to no-fines resulting presence a significant number voids. This makes an ideal solution water accumulation issues as it acts drainage system. study employs feedforward backpropagation artificial neural network model that combines experimental l...

This study estimated the nitrate and potassium concentration in soil solution of drainage lysimeter using mathematical models developed by Vogeler et al. (1996) Muñoz-Carpena (2005) computational model Hydrus-2D, while comparing simulated observed data statistical parameters. The cultivar used for was ‘Prata Gorutuba’. experimental plots were six lysimeters drainage. Fertigation performed weekl...