نتایج جستجو برای: karkheh and karoon

تعداد نتایج: 16827208  

2012
M. Hashemi

Achieving sustainable development in countries prone to earthquakes is possible with taking effective measures to reduce vulnerability to earthquakes. In this context, damage assessment of hypothetical earthquakes and planning for disaster management are important issues. Having a computer tool capable of estimating structural and human losses from earthquakes in a specific region may facilitat...

2015
S. Ashraf Vaghefi S. J. Mousavi K. C. Abbaspour R. Srinivasan J. R. Arnold

The paradigm of integrated water resources management requires coupled analysis of hydrology and water resources in a river basin. Population growth and uncertainties due to climate change make historic data not a reliable source of information for future planning of water resources, hence necessitating climate and landuse change impact studies. This work presents an integrated modeling approac...

2012
Zahra Yazdi

Sediment loads transfer in hydraulic installations and their consequences for the O&M of modern canal systems is emerging as one of the most important considerations in hydraulic engineering projects apriticularly those which are inteded to feed the irrigation and draiange schemes of large command areas such as the Dez and Mogahn in Iran.. The aim of this paper is to investigate the applicabili...

2017
Saeid Ashraf Vaghefi Karim C. Abbaspour Monireh Faramarzi Raghavan Srinivasan Jeffrey G. Arnold Athanasios Loukas

This study examines the water productivity of irrigated wheat and maize yields in Karkheh River Basin (KRB) in the semi-arid region of Iran using a coupled modeling approach consisting of the hydrological model (SWAT) and the river basin water allocation model (MODSIM). Dynamic irrigation requirements instead of constant time series of demand were considered. As the cereal production of KRB pla...

Journal: :Chemosphere 2009
B Zargar H Parham A Hatamie

The adsorption and removal of amaranth (AM) from an aqueous solution by iron oxide nanoparticles (IONPs) coated with cetyltrimethylammonium bromide (CTAB) as adsorbent was reported. The novel magnetic separation was quite efficient for the adsorption and desorption of AM. In an aqueous solution of AM at 25 degrees C, the adsorption data could be fitted by the Langmuir equation with a maximum ad...

Journal: :Aqua 2022

Abstract Reducing the quantity of water in recent years has increased competition between development projects and environment. Wetlands are increasingly under pressure due to human activities. The most serious threats wetlands excessive agriculture diversion for irrigation. In years, shortage drought, wetland dryness Iran caused many problems, including dust crisis. Therefore, planning at basi...

Journal: :ecopersia 2015
mehdi vafakhah ali dastorani alireza moghaddam nia

parameter estimation of the nonlinear muskingum model is a highly nonlinear optimization problem. although various techniques have been applied to optimize the coefficients of the nonlinear muskingum flood routing models, but an efficient method for this purpose in the calibration process is still lacking. the accuracy of artificial bee colony (abc) algorithm is investigated in this paper to op...

Drought and changes in weather conditions, cause damage and reduce their agricultural products. The fact that durum wheat, after common wheat or Simultaneous with that, is one of the major sources of food supplies, makes it a necessity to identify its drought tolerant species.This article reports an experiment on the impact of different levels of drought ( 5,10,20, 25 percent of field capacity)...

ژورنال: علوم آب و خاک 2019

The aim of this study was the effect of raw water quality on the efficiency of domestic reverse osmosis apparatus in Khuzestan province. The results showed that the purified water quality was related to the quality of entrance raw water. With increasing in salt concentrations (EC) or TDS, purification efficiency was decreased. The cation and anions content of refinery water was related to TDS a...

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