the rectangular broad crested weirs are widely used to measure the water dischargewhich is one of the most popular tools in the irrigation canals particularly, in developingcountries.the present article is trying to demonstrate the results of an experimental work carriedout on rectangular broad crested weir with sloped upstream face to investigate the effect ofupstream slope on discharge effici...

cients. Normalizing to a unit plot of length 22.13 m, both the USLE and RUSLE use the equation Empirical soil erosion models continue to play an important role in soil conservation planning and environmental evaluations around L 5 (l/22.13) [2] the world. The effect of hillslope length on soil loss, often termed the where L is soil loss normalized to the 22.13-m-long slope length factor, is one...

Using hydraulic geometry (HG) theory, we investigated three rivers typical of the Ecuadorian mountainous region with longitudinal slopes ranging from 0.8% to 10% and coarse bed material d50 3 54 mm values d90 up 908 mm. Extensive field measurements were performed characterize geometric properties at 33 sites. these data, at-a-station HG relationships obtained for top width, average flow depth, ...

in this research introduced the lapsus model as a runoff, erosion and sediment model in iran. this model for the first time has operatedin iran at kakhk paired catchment of gonabad. lapsus model is a landscape evolution model that can estimate the runoff, erosion and sediment at the four stage include: calculate the effective rainfall, runoff routing, calculate the capacity of sediment transpor...

In this paper, path loss (PL) model for IEEE 802.11n in large rectangular room is determined on basis of PL measurements. It is found that PL model can be described by a TGn channel model and free-space model at small distances with PL exponent of 2.67 and 2. At large distances PL model can be described by one-slope model with PL exponent of 1.6. Further, it is determined PL exponent increases ...

Recently, Yunker et al. [1] reported an interesting experimental study on colloidal particle shape effects on edge growth for evaporating water drops, finding that kinetic roughening [2] of one-dimensional fronts of deposits depends on particle shape. In one of three regimes studied, particles with anisotropy 1:5 " 3:5 induce roughness exponent values loc ’ 0:61, ’ 0:68, argued to be compatible...

soil detachment is known as an important process in soil erosion and its quantification is necessary to establish a basic understanding of erosion. this study was carried out to find the best flow erosivity indicator(s) for predicting detachment rate at low slopes. for this purpose, 12 experiments including 6 flow discharges (75, 100, 125, 150, 175 and 200 ml/s) and 2 slope gradients (1.5 and 2...