نتایج جستجو برای: constant temperature anemometer cta

تعداد نتایج: 653361  

2014
Santiago Pindado Javier Cubas Félix Sorribes-Palmer

The results of several research campaigns investigating cup anemometer performance carried out since 2008 at the IDR/UPM Institute are included in the present paper. Several analysis of large series of calibrations were done by studying the effect of the rotor's geometry, climatic conditions during calibration, and anemometers' ageing. More specific testing campaigns were done regarding the cup...

2014
Christopher Elnan Kvistad Andrej Khanevski Aliona Nacu Lars Thomassen Ulrike Waje-Andreassen Halvor Naess

BACKGROUND Low body temperature is considered beneficial in ischemic stroke due to neuroprotective mechanisms, yet some studies suggest that higher temperatures may improve clot lysis and outcomes in stroke patients treated with tissue plasminogen activator (tPA). The effect of increased body temperature in stroke patients treated with tPA and with normal computed tomography angiography (CTA) o...

2006
Michael A. Weimer Thurein S. Paing

A growing demand for deployment of autonomous sensors and sensor networks is leading to a subsequent increase in the demand for localized, independent energy harvesting capabilities for each node. In this paper, a method of remote area wind energy harvesting is presented, with a focus on an anemometer-based solution. By utilizing the motion of the anemometer shaft to turn a compact alternator, ...

Journal: :حفاظت گیاهان 0
آل ابراهیم آل ابراهیم راشد محصل راشد محصل میقانی میقانی باغستانی باغستانی

abstract increased knowledge of russian knapweed biology would facilitate development of an optimum control program. to examine germination characteristic of this weed, several experiments were conducted in weed research department, plant pest and diseases research institute of tehran during 2003. first experiment was a factorial with 3 replications to break seed dormancy of this weed. first fa...

2001
Jack Chen

In this paper, we report the development of a new type of hot-wire anemometer (HWA) realized by using a microfabrication process that combines surface micromachining and an efficient three-dimensional assembly technique. The HWA uses a thermal element (hot wire) that is made of Pt/Ni/Pt film with a measured temperature coefficient of resistance (TCR) of 2400 ppm/ C. The thermal element is eleva...

2015
Brian D. Landers Peter J. Disimile

This paper presents a comparison between two commonly used velocity measurement techniques applied in experimental fluid dynamics: Constant Temperature Anemometry (CTA) and Particle Image Velocimetry (PIV). Previous studies have applied these techniques to the self-similar region of an axisymmetric jet which resides in the far-field. However, there is a lack of CTA to PIV comparison data in the...

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