نتایج جستجو برای: bubbles spillover

تعداد نتایج: 17389  

Journal: :Vision Research 2004
Richard F. Murray Jason M. Gold

The bubbles method is a recently developed variant of reverse correlation methods that have been used in psychophysics and physiology. We show mathematically that for the broad and important class of noisy linear observers, the bubbles method recovers much less information about how observers process stimuli than reverse correlation does. We also show experimentally that the unusual type of noi...

2014
Chih-Hui Yang Wei-Ting Wang Alexandru Mihai Grumezescu Keng-Shiang Huang Yung-Sheng Lin

Composite particles with multifunctions have been extensively utilized for various applications. Bubble particles can be applied for ultrasound-mediated imaging, drug delivery, absorbers, cell culture, etc. This study proposes a one-step strategy to obtain Pt nanoparticles loaded in alginate bubbles. A needle-based droplet formation was used to generate uniform alginate particles about 2 mm in ...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2014
Scott Parker Steve Granick

High-speed movies are taken when bubbles grow at gold surfaces heated spotwise with a near-infrared laser beam heating water below the boiling point (60-70 °C) with heating powers spanning the range from very low to so high that water fails to rewet the surface after bubbles detach. Roughly half the bubbles are conventional: They grow symmetrically through evaporation until buoyancy lifts them ...

2012
Carlo Gualtieri

The analysis of bubble clustering in air-water flows may provide some measure of the bubble-turbulence interactions. A cluster of bubbles is as a group of two or more bubbles, with a distinct separation from other bubbles. This paper compares the results of a clustering study in a dropshaft and in a hydraulic jump to point out differences/similarities between those complex turbulent flows. The ...

Journal: :SSRN Electronic Journal 2013

2006
Keith Copsey

I present analytic time symmetric initial data for five dimensions describing “bubbles of nothing” which are asymptotically flat in the higher dimensional sense, i.e. there is no Kaluza-Klein circle asymptotically. The mass and size of these bubbles may be chosen arbitrarily and in particular the solutions contain bubbles of any size which are arbitrarily light. This suggests the solutions may ...

Journal: :Physical review. D, Particles and fields 1995
Enqvist Riotto Vilja

We consider the role played by subcritical bubbles during the electroweak phase transition, estimate their average size, amplitude and formation rate taking into account the crucial role played by thermalization. We also study the influence of subcritical bubbles on the formation of critical bubbles in the thin wall regime and show that, contrary to some recent claims, subcritical bubbles do no...

Journal: :Neuron 2002
Thomas S Otis

Neurotransmitter "spillover" between neighboring synapses challenges the principle of synapse specificity. In this issue of Neuron, show that release from neighboring presynaptic sites contributes significantly to AMPA receptor-mediated postsynaptic currents at cerebellar mossy fiber synapses. Unexpectedly, spillover is predicted to improve the reliability and reduce the variability of transmis...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2006
T S Lo Victor S L'vov Itamar Procaccia

Drag reduction by bubbles in stationary turbulent flows is sensitive to the compressibility of the bubbles. Without this dynamical effect the bubbles only renormalize the fluid density and viscosity, an effect that by itself can only lead to a small percentage of drag reduction. We show in this paper that the dynamics of bubbles and their effect on the compressibility of the mixture can lead to...

Journal: :JACC. Cardiovascular interventions 2014
Jakub Honěk Martin Srámek Luděk Sefc Jaroslav Januška Jiří Fiedler Martin Horváth Aleš Tomek Stěpán Novotný Tomáš Honěk Josef Veselka

OBJECTIVES This study sought to evaluate the effect of catheter-based patent foramen ovale (PFO) closure on the occurrence of arterial bubbles after simulated dives. BACKGROUND PFO is a risk factor of decompression sickness in divers due to paradoxical embolization of bubbles. To date, the effectiveness of catheter-based PFO closure in the reduction of arterial bubbles has not been demonstrat...

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