نتایج جستجو برای: reducing inflow

تعداد نتایج: 251702  

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...

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...

Journal: :journal of mining and environment 2016
m. doustmohammadi a. jafari o. asghari

water inflow is one of the most important challenges in the underground excavations. in addition to inducing working conditions and environmental problems, it decreases the stability and quality of the surrounding rocks. the direct method of measuring rock mass hydraulic conductivity consists of drilling the boreholes and observing the rate of fluid lost in the boreholes. applying this method i...

2007
Izquierdo

The behavior of four inflow performance relationships are analyzed and discussed. Two of them are developed for petroleum systems and two others are developed for geothermal fluid containing high and low salinity respectively. A methodology to determine the maximum flow rate (Wmax) that a well can produce for a specific stage of its productive life, using these inflow relationships is presented...

Journal: :iran agricultural research 2013
h. nadian g. fathi m. abdollahi

the effects of arbuscular mycorrhizal (am) fungi on growth and phosphorus (p) inflow into two species of clover plant with different root morphology were studied. the experiment was arranged as a randomized complete block design consisting of a 2×3×3 factorial combination of two clover species (trifolium alexandrinum l. and trifolium pratense l.), three mycorrhiza states (without mycorrhiza, gl...

Journal: :Applied Mathematics and Computation 2008
Jozsef Z. Farkas

We investigate the effect of a positive population inflow of individuals from an external source on the dynamical behaviour of certain physisologically structured population models. We treat a size-structured model with constant inflow and nonlinear birth rate and an age-structured model with nonlinear (density dependent) inflow and linear birth rate. Analogously to the inherent net reproductio...

Journal: :The Biochemical journal 1994
K C Fernando G J Barritt

The role of heterotrimeric GTP-binding proteins in the process of store-operated Ca2+ inflow in hepatocytes was investigated by testing the ability of pertussis toxin to inhibit thapsigargin- and 2,5-di-tert-butylhydroquinone (DBHQ)-induced bivalent cation inflow. Hepatocytes isolated from rats treated with pertussis toxin for 24 h exhibited markedly inhibited rates of both Ca2+ and Mn2+ inflow...

2006
M. J. DIAMANTOPOULOU P. E. GEORGIOU

Accurate real-time reservoir inflow forecasting is an important requirement for operation, scheduling and planning conjunctive use in any basin. In this study, Time Delay Artificial Neural Network (TDANN) models, which are time lagged feed-formatted networks with delayed memory processing elements at the input layer, are applied to forecast the daily inflow into a planned Reservoir (Almopeos Ri...

Journal: :دانش آب و خاک 0
مصطفی قهرمان نزاد دانشآموخته کارشناسی ارشد، گروه آبیاری و زهکشی دانشکده مهندسی علوم آب دانشگاه شهید چمران اهواز سعید برومندنسب استاد، گروه آبیاری و زهکشی دانشکده مهندسی علوم آب دانشگاه شهید چمران اهواز علی شینی دشتگل کارشناس، مرکز تحقیقات شرکت توسعه نیشکر

low level of efficiency is a main problem of surface irrigation systems that is due to their poordesign and management. furrow inflow rate and cut off time are the most important design parametersthat affect the efficiency of furrow irrigation. in this study, furrow irrigation condition of amir kabiragro-industry sugarcane fields was simulated with winsrfr3.1 model. then, irrigation performance...

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