We investigate the uid dynamics in two-dimensional micromodels that represent natural complex porous media using micro-Particle Image Velocimetry (micro-PIV). The pore-scale velocity distributions are measured for single-phase ow and are in very good agreement with direct numerical simulations. Our validated and optimized Micro-PIV system is then used to investigate immiscible two-phase ow prop...

Here we describe the use of a nested high magnification camera configuration within a large field of view (FOV) PIV experiment. The objective of these measurements is to obtain instantaneous velocity flow fields to resolve the wide range of scales present in turbulent boundary layers at high Reynolds numbers of up to Reτ ≈ 20000. Flow statistics are compared against previous measurements made u...

This paper examines various techniques that have been developed to measure flow fields in microfluidic devices with 10 – 10 micron-scale spatial resolution. These techniques include Scalar Image Velocimetry (SIV), Laser Doppler Velocimetry (LDV), and Particle Image Velocimetry (PIV). Advantages and disadvantages of these techniques are presented. PIV results are presented for a liquid flow thro...

INTRODUCTION Infiltrations are the most commonly identified complication of peripheral intravenous (PIV) therapy with an incidence ranging from 23%-78%. Injury can range from slight redness to functional impairment and residual cosmetic defects. Often, the extent of injury may depend on how quickly a potential infiltration is assessed and treated. The perioperative setting may create unique cha...

Tomographic particle image velocimetry is a 3D PIV technique based on the illumination, recording, reconstruction and analysis of tracer-particle motion within a three-dimensional measurement volume. The recently developed technique makes use of several simultaneous views of the illuminated particles, typically 4, and their three-dimensional reconstruction as a light-intensity distribution by m...

Abstract The reaction of cobalt pivalate [Co(Piv) 2 ] n and in situ generated N‑heterocyclic carbene IPrPh (1,3-bis(2,6-diisopropylphenyl)-2-phenylimidazol-4-ylidene) affords heteroligand complexes [Co (Piv) 4 -(IPrPh) ( I ), 2.8 (O t Bu) 1.2 (IPrPh) II 3 (μ -O)(Piv) III ). structures ·C 6 H 14 are determined by X-ray diffraction (XRD) (CIF files CCDC nos. 2216724 2216725, respectively). Exchan...

A preliminary comparative measurement between particle imaging velocimetry (PIV) and laser speckle contrast analysis (LASCA) to study pulsatile flow using ventricular assist device in a patient-specific carotid artery phantom is reported. These full-field optical techniques have both been used to study flow and extract complementary parameters. We use the high spatial resolution of PIV to gener...

We describe the first reported case of bronchopneumonia by Parainfluenza Virus (PIV) type 4B without coinfection with any other respiratory virus in a patient with Mixed Connective Tissue Disease (MCTD) on chronic steroid therapy. The patient acquired an infection by PIV followed by a disease flare with development of bronchopneumonia. This report highlights the importance of considering rare m...

In this paper, we present our design of a portable cluster supercomputer created specifically for processing PIV image data. To make the system portable for a laboratory environment, the cluster computer is required to run on minimal power and be light weight. The final cluster design was based on the Intel R ©QuadCore Xeon R ©X3210 low-power processors. This hardware setup allows for a total s...