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Production of gas bubbles in fluids by tribonucleation

Production of gas bubbles in fluids by tribonucleation PHYSIOLOGY Vol. 28, No. 4, April Printed in U.S.L4. Production of gas bubbles in fluids by tribonucleation KENNETH Biophysics G. Branch, IKELS Physiology Division, US Air Force School of Aerospace A4edicine (AFSC), Brooks Air Force Base, Texas IKELS, KENNETH G. Production of qas bubbles in fluids by tribonucleation. J. Appl. Physiol. 28(4): 524-527. 1970.-This report describes a mechanism, called tribonucleation, for producing gas nuclei by making and breaking contact between solid bodies which are immersed in liquid. A metal ball was rolled inside a glass tube filled with liquid which contains dissolved gas. Formed nuclei may grow to visible bubbles depending on the dissolved gas concentration and pressure applied to the liquid. Unlike other possible mechanisms for forming bubbles, tribonucleation is capable of producing nuclei under relatively mild experimental conditions, such as may be encountered in vivo. The experiments show that viscosity and velocity of separation of surfaces are Amportant determinants of whether or not nuclei will form. bubble formation : decompression sickness pression sickness is the result of fairly modest changes in ambient barometric pressure, it is reasonable to suspect the presence of more or less permanent nuclei in the circulating blood. Harvey et al. (7) demonstrated, http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Applied Physiology The American Physiological Society

Production of gas bubbles in fluids by tribonucleation

Kenneth G. Ikels
Journal of Applied Physiology , Volume 28: 524 – Apr 1, 1970
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Publisher
The American Physiological Society
Copyright
Copyright © 1970 the American Physiological Society
ISSN
8750-7587
eISSN
1522-1601
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Abstract

PHYSIOLOGY Vol. 28, No. 4, April Printed in U.S.L4. Production of gas bubbles in fluids by tribonucleation KENNETH Biophysics G. Branch, IKELS Physiology Division, US Air Force School of Aerospace A4edicine (AFSC), Brooks Air Force Base, Texas IKELS, KENNETH G. Production of qas bubbles in fluids by tribonucleation. J. Appl. Physiol. 28(4): 524-527. 1970.-This report describes a mechanism, called tribonucleation, for producing gas nuclei by making and breaking contact between solid bodies which are immersed in liquid. A metal ball was rolled inside a glass tube filled with liquid which contains dissolved gas. Formed nuclei may grow to visible bubbles depending on the dissolved gas concentration and pressure applied to the liquid. Unlike other possible mechanisms for forming bubbles, tribonucleation is capable of producing nuclei under relatively mild experimental conditions, such as may be encountered in vivo. The experiments show that viscosity and velocity of separation of surfaces are Amportant determinants of whether or not nuclei will form. bubble formation : decompression sickness pression sickness is the result of fairly modest changes in ambient barometric pressure, it is reasonable to suspect the presence of more or less permanent nuclei in the circulating blood. Harvey et al. (7) demonstrated,

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Journal of Applied Physiology – The American Physiological Society

Published: Apr 1, 1970

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