نتایج جستجو برای: internal recirculation

تعداد نتایج: 236034  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه مازندران - دانشکده علوم انسانی و اجتماعی 1392

tourism , today as one of the ways to make money, create jobs , and social and political interactions is considered. this paper aims to examine the strengths and weaknesses of tourism development in mahmoud abad ( mazandaran ). the research method in this study is " descriptive - analytical " and to collection of data used field methods such as questionnaires and documentation - library. the sa...

2017
Eric Kutter Chuixiang Yi George Hendrey Heping Liu Timothy Eaton Wenge Ni-Meister

This study generated eddy covariance data to investigate atmospheric dynamics leeward of a small, forested hillside in upstate New York. The causes and effects of recirculation eddies were examined to support the larger goal of improving measurement of the exchange of energy, moisture, and trace gases between the terrestrial biosphere and the atmosphere over complex terrain. Sensors operated at...

2007
Jerzy Merkisz Pawel Fuc

Introduce electronic control exhaust gas recirculation EGR system in the passenger cars and light duty vehicles was made because of fuel direct injectionengines. In this engines temperature combustion process is a higher then other type engine and in this connections NO, emissions were higher to. Simultaneously was appearing problems to electronic exhaust gas recirculation control in connection...

Journal: :The Science of the total environment 2004
Y Q Zhao G Sun S J Allen

The purification capacity of a laboratory scale tidal flow reed bed system with final effluent recirculation at a ratio of 1:1 was investigated in this study. In particular, the four-stage reed bed system was heavily loaded with strong agricultural wastewater. Under the hydraulic and organic loading rates of 0.43 m3/m2.d and 1055 gCOD/m2.d, respectively, the average removal efficiencies obtaine...

2013
Laurence Bichaud Khalil Dachraoui Géraldine Piorkowski Ifhem Chelbi Gregory Moureau Saifedine Cherni Xavier De Lamballerie Sonia Sakhria Rémi N. Charrel Elyes Zhioua

On July 25, 2012, SBV infection was identified in a cow in Jura Canton in the northwestern, French-speaking region of Switzerland (Romandie) (7). A serologic study conducted in the United Kingdom showed that several cattle and sheep seroconverted for SBV in 2012 (8). However, our data show that SBV survived the winter, when midge numbers decreased. The precise mechanisms of SBV overwintering ar...

2008
Klaus Trangbaek

There is an increasing need to operate power plants at low load for longer periods of time. When a once-through boiler operates at a sufficiently low load, recirculation is introduced, significantly altering the control structure. This paper illustrates the possibilities for using constrained control to obtain optimal load gradients in the recirculation mode. A model predictive controller is de...

Journal: :Physics of Fluids 2023

Stenosis in the internal carotid arteries is a serious cardiovascular condition. It well-reported that low and oscillatory wall shear stress enhances risk of stenosis progression. However, effects increased heart rates highly stenosed are not well explored. A detailed understanding flow features distribution at different may help clinicians to prescribe better exercise schedules for patients. I...

Journal: :Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism 1984
L Hillered B K Siesjö K E Arfors

Recovery of brain mitochondrial function was studied following forebrain ischemia induced in rats by common carotid artery occlusion in combination with hypotension caused by bleeding. A reversible insult was induced by 15-min ischemia in fasted animals (hypoglycemic ischemia), and an irreversible one by 30-min ischemia in fed animals (normoglycemic ischemia), the latter procedure causing exagg...

2008
Steven Renzetti

This study considers water use by Canadian manufacturing firms. The estimation of water demands is based on a detailed crosssectional survey of establishment-level observations on water prices, quantities, and expenditures. Industrial water use is modeled as having four components: intake, treatment prior to use, recirculation, and discharge. Average values for the estimated own-price elasticit...

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