نتایج جستجو برای: laval nozzle

تعداد نتایج: 8712  

2008
S D Aaron D Fergusson G B Marks S Suissa K L Vandemheen S Doucette F Maltais J F Bourbeau R S Goldstein M Balter D O’Donnell M FitzGerald

1 The Ottawa Health Research Institute, University of Ottawa, Ottawa, Canada; 2 The Woolcock Institute of Medical Research, Sydney, Australia; 3 Centre de recherche, Hopital Laval, Universite Laval, Montreal, Canada; 4 Department of Medicine, McGill University, Montreal, Canada; 5 Department of Medicine, The University of Toronto, Toronto, Canada; 6 The Department of Medicine, Queen’s Universit...

Journal: :Canadian bulletin of medical history = Bulletin canadien d'histoire de la medecine 2000
J Duffin P Potter

On 24 October 1950, fourteen people met at the invitation of the abbé Arthur Maheux in the Institut d’Histoire et de Géographie, of the Université Laval in Quebec City to form the Société canadienne d’histoire de la médecine (SCHM). Among them were physicians, historians, and archivists. Dr. Sylvio Leblond (1901-1990), internist and instructor of medical history at Laval, was elected president ...

2007
Ali Uzun M. Yousuff Hussaini

This paper reports on the simulation of the near-nozzle region of a moderate Reynolds number cold jet flow exhausting from a chevron nozzle. The chevron nozzle considered in this study is the SMC001 nozzle experimentally studied by the researchers at the NASA Glenn Research Center. This nozzle design contains six symmetric chevrons that have a five-degree penetration angle. The flow inside the ...

2007
BRAD K. GIBSON Ermanno Borra

A history of Liquid Mirror Telescope (LMT) experimentation is provided. The concept can be traced to Ernesto Capocci of the Naples Observatory (1850), but it was not until 1872 that Henry Skey of the Dunedin Observatory in New Zealand constructed the rst working laboratory LMT. The 1909 experiments by Robert Wood at Johns Hopkins University exposed some of the strengths and weaknesses of the LM...

2007
Louis Laviolette Jean Bourbeau Sarah Bernard Yves Lacasse Véronique Pepin Marie-Josée Breton Marc Baltzan Michel Rouleau François Maltais

From: Centre de Recherche, Hôpital Laval, Institut universitaire de cardiologie et de pneumologie de l’Université Laval, Respiratory, Epidemiology and Clinical Research Unit, Montreal Chest Institute of the Royal Victoria Hospital, McGill University Health Centre, McGill University, Centre de recherche, Hôpital du Sacré-Coeur de Montréal, Centre Hospitalier Mont-Sinaï, Centre Hospitalier Affili...

Journal: :The astrophysical journal 2022

Abstract The first experimental study of the low-temperature kinetics gas-phase reaction NH 2 with formaldehyde (CH O) has been performed. This previously suggested as a source formamide (NH CHO) in interstellar environments. A pulsed Laval nozzle equipped laser-flash photolysis and laser-induced fluorescence spectroscopy was used to create monitor temporal decay presence CH O. No loss could be...

Amir Mohammad Armanian mahboobeh namnabati, Sara Rahmani

Background: Oral feeding problems are among the most common issues in preterm infants. Various methods and feeding support tools are used in this regard, such as cup feeding and feeding nozzle. The present study aimed to determine the preferred method between cup feeding and feeding nozzle to support oral feeding in premature neonates. Methods: This clinical trial was conducted on 70 preterm i...

2012
Ram S. Mohan Radovan Kovacevic Raju Damarla

\nG ABSTRACT An abrasive waterjet nozzle wear monitoring and compensating mechanism using the frequency domain.acoustic signals geneiated by the jet exiting the nozzle, as input, is prbposed. An artificial neural network which forms the critical iart of this system is developed using the _back-propagatlon algorithm. The trained network is capable of determining the nozzle diameter corresponding...

2014
Kai Chen Vijay Modi

In this paper, the interaction of a transonic, turbulent axisymmetric jet with the workpiece is studied. Numerical simulations are carried out using an explicit, coupled solution algorithm with solution-based mesh adaptation. Effect of gas pressure and nozzle standoff distance on structure of the supersonic shock pattern is studied. Experiments are carried out to study the effect of processing ...

2012
W. H. Heiser A. BERNSTEIN W. H. HEISER

C i c ^ A one-dimensional theory based upon fundamental flow relationships ^ is presented for analyzing the behavior of one or more gas streams flowing MM through a single nozzle. This conpound-coropressible flow theory shows that f^ the behavior of each stream is influenced by the presence of the other ^^ streams. The theory also shows that the behavior of coiTpound--coiTpressible flow is pred...

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