Results 81 to 90 of about 1,725 (197)

Quantitative and Qualitative Analysis of Main Parameters and Their Interactions in Thermoacoustic Refrigerators Performance

open access: yesApplied Sciences
Efforts to optimize the design and enhance the efficiency of standing-wave thermoacoustic refrigerators (SWTARs), particularly those with parallel plate stacks, are crucial for achieving rapid and straightforward engineering estimates.
Humberto Peredo Fuentes   +1 more
doaj   +1 more source

In-vivo imaging of nanoshell extravasation from solid tumor vasculature by photoacoustic microscopy [PDF]

open access: yes, 2007
In this study, high resolution reflection-mode (backward-mode) photoacoustic microscopy (PAM) is used to noninvasively image progressive extravasation and accumulation of nanoshells within a solid tumor in vivo.
Li, Meng-Lin   +4 more
core  

Ultrasound-modulated optical tomography using four-wave mixing in photorefractive polymers [PDF]

open access: yes, 2008
Ultrasound-modulated optical tomography uses a well focused ultrasound beam to modulate diffuse light inside soft biological tissues. This modality combines the advantages of ultrasound resolution with optical contrast.
Hemmer, Philip   +5 more
core  

The Influence of Heat Input Ratio on Electrical Power Output of a Dual-Core Travelling-Wave Thermoacoustic Engine [PDF]

open access: yes
This paper presents an analytical and experimental investigation of an electricity generator that employs a two-stage looped tube travellin -wave thermoacoustic prime-mover to deliver acoustic power from heat energy, a loudspeaker to extract electricity ...
Hann, D.   +3 more
core  

Three-dimensional photoacoustic imaging of subcutaneous microvasculature in vivo [PDF]

open access: yes, 2006
Three-dimensional photoacoustic imaging of subcutaneous microvasculature in small animals is realized in vivo using photoacoustic microscopy. Previously, degraded lateral resolution in the out-of-focus region made three-dimensional visualization ...
Li, Meng-Lin   +4 more
core  

Photoacoustic tomography with a virtual point detector [PDF]

open access: yes, 2007
We devise and explore a ring-shaped acoustic detector associated with a virtual point detector concept for photoacoustic tomography. The center of the ring transducer scans a circle around the object to be imaged and then is treated as an omni ...
Li, Meng-Lin   +2 more
core  

Thermoacoustic refrigeration

open access: yes, 1991
A new refrigerator which uses resonant high amplitude sound in inert gases to pump heat is described and demonstrated. The phasing of the thermoacoustic cycle is provided by thermal conduction. This 'natural' phasing allows the entire refrigerator to operate with only one moving part (the loudspeaker diaphragm).
Garrett, Steven L., Hofler, Thomas J.
openaire   +1 more source

Thermoacoustic Refrigerator

open access: yes, 2003
Thermoacoustic refrigerators have typically been designed to cool an isolated working fluid, necessitating a heat exchanging device to draw heat from the outside target fluid into the cooled working fluid. For example, a thermoacoustic refrigerator designed to chill air might utilize argon as an isolated working fluid, necessitating a heat exchanger to
openaire   +3 more sources

Influence of Material Used for the Regenerator on the Properties of a Thermoacoustic Heat Pump

open access: yesArchives of Acoustics, 2013
Research in termoacoustics began with the observation of the heat transfer between gas and solids. Using this interaction the intense sound wave could be applied to create engines and heat pumps.
Bartłomiej KRUK
doaj  

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