نتایج جستجو برای: curve number runoff

تعداد نتایج: 1292138  

Journal: :international journal of civil engineering 0
h. ziari iust, tehran,iran h. divandari islamic azad university, nowshahr branch, department of engineering, nowshahr, iran

pavement permanent deformations due to lack of shear strength in mixture are a major reason of rutting. any simple test to determine mixtures resistance to permanent deformation isn’t distinguished in the 1st level of superpave mix design method and prevalent methods for evaluating mixture rut resistance are expensive and time-consuming. two aggregate types, gradations, asphalt cements and fill...

Journal: :Journal of forest science 2021

Simulation of the runoff-rainfall process in forest lands is essential for land management. In this research, a hydrologic modelling system (HEC-HMS) and artificial neural network (ANN) were applied to simulate rainfall-runoff (RRP) Kasilian watershed with an area 68 square kilometres. The HMS model was performed using secondary data rainfall discharge at climatology hydrometric stations, Soil ...

2011
M. L. Risse X. Zhu J. Eason T. Leonard

Organic amendments such as composts and mulches have been shown to improve soil quality and reduce the impacts of stormwater runoff and soil erosion Previous studies using rainfall simulators have documented that runoff volumes and soil erosion can be significantly reduced when organic materials are added to the soil profile. The objectives of this study are to measure the changes in runoff and...

Journal: :International journal of engineering and geosciences 2023

An investigation of soil and water resources is essential to determine the future scenario management attain food security. The improper watersheds results in a huge amount sediment loss surface runoff. Therefore, present study was carried out estimate runoff erosion using Soil Conservation Service Curve Number (SCS-CN) method RUSLE approach, respectively. These have been estimated geospatial t...

Journal: :Proceedings of the National Academy of Sciences 1971

This study aims to simulate runoff and runoff quality of Zarrineh river basin by SWAT model. Calibration and verification were done respectively with monthly runoff statistics in SWAT CUP by SUFI2 method for 1992-2013, for 12 sub basin, 226 HRU and monthly nitrate data for 2006-2009. The highest runoff sensitivity and runoff quality with minimum Pvalue and maximum absolute value Ttest belong to...

Journal: :Transactions of the American Mathematical Society 2022

We study integral points on the quadratic twists $\mathcal{E}_D:y^2=x^3-D^2x$ of congruent number curve. give upper bounds in each coset $2\mathcal{E}_D(\mathbb{Q})$ $\mathcal{E}_D(\mathbb{Q})$ and show that their total is $\ll (3.8)^{\mathrm{rank} \mathcal{E}_D(\mathbb{Q})}$. further average non-torsion this family bounded above by $2$. As an application we also deduce from our system simultan...

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