نتایج جستجو برای: اندازه گیری piv

تعداد نتایج: 218396  

2000
Niels G. Deen Bjørn H. Hjertager Tron Solberg

In this work a comparison of multiphase PIV and LDA measurement methods is made. The objective of the work is twofold: to provide measurement results that can be used to validate multiphase CFD simulations and to assess the different acquisition and analysis methods in multiphase measurements. The former is done with the use of a two-camera PIV/LIF method. It is shown that this method gives det...

Journal: :Computers & Mathematics with Applications 2014
Prathish K. Rajaraman Thomas A. Manteuffel Marek Belohlavek Eileen McMahon Jeffrey J. Heys

Recent developments in the field of echocardiography have introduced various noninvasive methods to image blood flow within the heart chambers. FDA-approved microbubbles can be used for intracardiac blood flow imaging and determining the velocity of the blood based on the displacement of the bubbles and the frame rate of the ultrasound scan. A limitation of this approach is that the velocity fi...

Journal: :Applied and environmental microbiology 1982
D J Adams D N Ridinger R S Spendlove B B Barnett

Two forms of virus particle are released from reovirus-infected cell cultures, infectious reovirus and potentially infectious reovirus (PIV). PIV particle forms have a complete outer coat and are not infectious until the outer coat is altered or removed. The PIV concentration in polluted waters, however, has not been determined. Protamine sulfate precipitation, using 0.25% fetal bovine serum an...

2016
Sung Tae Lee In Tak Cho Won Mook Kang Byung Gook Park Jong-Ho Lee

This work investigates the intrinsic characteristics of multilayer WSe2 field effect transistors (FETs) by analysing Pulsed I-V (PIV) and DC characteristics measured at various temperatures. In DC measurement, unwanted charge trapping due to the gate bias stress results in I-V curves different from the intrinsic characteristic. However, PIV reduces the effect of gate bias stress so that intrins...

Journal: :Emerging Infectious Diseases 2008
Stephanie Venn-Watson Rebecca Rivera Cynthia R. Smith Jeremiah T. Saliki Shannon Caseltine Judy St. Leger Pam Yochem Randall S. Wells Hendrik Nollens

Parainfluenza virus (PIV) is a leading cause of respiratory infections in humans. A novel virus closely related to human and bovine parainfluenza viruses types 3 (HPIV-3 and BPIV-3), named Tursiops truncatus parainfluenza virus type 1 (TtPIV-1), was isolated from a dolphin with respiratory disease. We developed a dolphin-specific ELISA to measure acute- and convalescent-phase PIV antibodies in ...

Journal: :Experiments in fluids 2011
Damien Garcia

Post-processing of PIV (particle image velocimetry) data typically contains three following stages: validation of the raw data, replacement of spurious and missing vectors, and some smoothing. A robust post-processing technique that carries out these steps simultaneously is proposed. The new all-in-one method (DCT-PLS), based on a penalized least squares approach (PLS), combines the use of the ...

2010
ABDUL GHAFOOR

In this paper we describe several network security protocols used by various components of CryptoNET architecture. The protocols are based on the concept of generic security objects and on wellestablished security standards and technologies. Distinctive features of our security protocols are: (1) they are complete in terms of their functionality, (2) they are easy to integrate with applications...

Journal: :SIAM Journal of Applied Mathematics 2015
Louis-Philippe Saumier Boualem Khouider Martial Agueh

Particle image velocimetry (PIV) is a method used to measure the velocity field of a fluid flow. Traditionally, cross correlation algorithms are used to retrieve the flow velocity. Recently, a new method for PIV based on the L optimal mass transportation problem (OT-PIV), is introduced and analyzed in [Saumier, Khouider and Agueh, Optimal Transport for Particle Image Velocimetry, Comm. Math. Sc...

Journal: :Dalton transactions 2014
Rémi Tirfoin Lise-Marie Chamoreau Yanling Li Benoit Fleury Laurent Lisnard Yves Journaux

The strategic recombination of preformed coordination clusters in the presence of polymodal bridging ligands has successfully led to the characterisation of five new compounds of structural and magnetic interest. Indeed using the dinuclear complex [M2(H2O)(piv)4(Hpiv)4] (M = Co, Ni; Hpiv = pivalic acid) as starting material and reacting it with phenylhydroxamic acid (H2pha) has yielded the four...

Journal: :Journal of infusion nursing : the official publication of the Infusion Nurses Society 2006
Gregory J Schears

Inadequate catheter securement is an underrecognized patient safety issue that contributes significantly to catheter-related complications, including dislodgment, occlusion, infiltration, and infection. Pooled data from prospective product trials at 83 hospitals compared tape to a standard peripheral intravenous (PIV) securement method with a PIV-specific catheter-stabilizing device (StatLock)....

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