نتایج جستجو برای: phosphorus inflow

تعداد نتایج: 50839  

2016
J. E. Gilley Shannon L. Bartelt-Hunt X. Li D. B. Marx RUNOFF RATE S. L. Bartelt-Hunt S. J. Lamb D. D. Snow D. B. Parker B. L. Woodbury

This study was conducted to measure the effects of slurry application method, swine growth stage, and flow rate on runoff nutrient transport. Swine slurry was obtained from production units containing grower pigs, finisher pigs, or sows and gilts. The swine slurry was applied using broadcast, disk, or injection methods at a rate required to meet annual nitrogen requirements for corn. Three 30 m...

A. Hagilouy, M. Ghelich khani and S. Ghasemi,

In order to carry out experimental investigations on radial inflow gas turbine, a special test laboratory was designed and constructed at Sharif University of Technology. This laboratory is introduced in the present paper and experimental procedures are elaborated on. Then, some test results are presented and discussed. The trends of performance characterisitics match our expectation and show g...

A. Hagilouy, M. Ghelich khani and S. Ghasemi,

In order to carry out experimental investigations on radial inflow gas turbine, a special test laboratory was designed and constructed at Sharif University of Technology. This laboratory is introduced in the present paper and experimental procedures are elaborated on. Then, some test results are presented and discussed. The trends of performance characterisitics match our expectation and show g...

Journal: :مدیریت آب و آبیاری 0
بهنام آبابایی دکتری مهندسی آبیاری و زهکشی گروه مهندسی آبیاری و آبادانی، دانشکدة مهندسی و فناوری کشاورزی، پردیس کشاورزی و منابع طبیعی کرج، دانشگاه تهران، کرج - ایران. فرهاد میرزایی اصلی به ترتیب، استادیار و استاد گروه مهندسی آبیاری و آبادانی، دانشکدة مهندسی و فناوری کشاورزی، پردیس کشاورزی و منابع طبیعی کرج، دانشگاه تهران، کرج - ایران. تیمور سهرابی به ترتیب، استادیار و استاد گروه مهندسی آبیاری و آبادانی، دانشکدة مهندسی و فناوری کشاورزی، پردیس کشاورزی و منابع طبیعی کرج، دانشگاه تهران، کرج - ایران.

in this research, data fusion (df) method was applied to simulate the hydrological process of taleghan reservoir daily inflow. two different df algorithms were proposed and assessed based on k-nearest neighbors (knn) algorithm. four artificial neural network models and two hammerstein-wiener (hw) models were used as the individual simulation models. comparison of the results between individual ...

2006
Yannis Papaharilaou John A. Ekaterinaris Y. Papaharilaou

Inflow asymmetry has been found to strongly influence the hemodynamics in arterial geometries. Flow asymmetry is commonly found within the aortic conduit just proximal of the aneurysmal expansion and is caused by the remodeling of the abdominal aorta required to accommodate the excess volume of the distended vessel. In an effort to improve the accuracy of abdominal aortic aneurysm (AAA) rupture...

2016
Chad J. Penn Derek M. Heeren

The degree, mechanisms, and kinetics of phosphorus (P) sorption onto soils can have a significant influence on leaching losses of P from soil. The objectives of this study were to measure the impact of retention time (RT) on P sorption in a flow-through system intended to simulate downward movement of a P solution through two different riparian soils, and determine if isothermal titration calor...

2006
T. Y. Yeh C. C. Chuang C. H. Ju

In Taiwan, constructed wetlands have received tremendous interests for water quality enhancement due to insufficient sewage treatment and groundwater deterioration. The main objectives of this study were to investigate pollutants removal mechanisms and efficiency within the field-scale natural purification hybrid systems. The systems included an oxidation pond, two serial surface flow wetlands ...

2015
Anna Kozak Ryszard Gołdyn Renata Dondajewska

In this paper we present the effects of environmental factors and zooplankton food pressure on phytoplankton in the restored man-made Maltański Reservoir (MR). Two methods of restoration: biomanipulation and phosphorus inactivation have been applied in the reservoir. Nine taxonomical groups of phytoplankton represented in total by 183 taxa were stated there. The richest groups in respect of tax...

Ma Yongxin mingjun li, Yi Xiangyi

Inflow control devices (ICD), which prevent water breakthrough by controlling the inflow profile of a well, have been used successfully in many oilfields. This paper will introduce a new discovery and an unsuccessful example. Moreover, this paper investigates meticulously and thoroughly to find the application conditions of the new discovery. Based on permeability rush coefficient and permeabil...

2016
Simon Thalén Peder Sörensson Andreas Sigfridsson Martin Ugander

Background Echocardiography has shown that patients with constrictive pericarditis or hemodynamically significant pericardial effusion show an increased respiratory variation in early transmitral inflow velocity. The methodology for quantification of respiratory variation in early transmitral inflow velocity using real time phase contrast (RT-PC) cardiovascular magnetic resonance (CMR) images i...

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