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Air Lubrication and Air Cavity Analysis
2020In this chapter we will use the acronym WFDR for water friction drag reduction to describe the general reduction of the frictional force of a hull wetted surface in water flow and air drag reduction (ADR) to describe achievement of reduction using air as a lubricant. If the local skin friction force on a surface in water flow is τw, then the local skin
Gennadiy Alexeevitch Pavlov +3 more
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SOLITARY AIR CYST OF PERITONEAL CAVITY
Archives of Surgery, 1953ALTHOUGH multiple air cysts of the peritoneum (pneumatosis intestinales, pneumatosis cystoides intestinalis) have been frequently described in the literature, a careful search has failed to reveal an account of a large solitary airfilled cyst in this location, although Brown,1in 1936, reported an air cyst of the abdomen and left thigh, probably formed ...
W L, HUGHES, R C, GREENE
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Air-conditioning in the human nasal cavity
Respiratory Physiology & Neurobiology, 2008Healthy humans normally breathe through their nose even though its complex geometry imposes a significantly higher resistance in comparison with mouth breathing. The major functional roles of nasal breathing are defense against infiltrating particles and conditioning of the inspired air to nearly alveolar conditions in order to maintain the internal ...
David, Elad, Michael, Wolf, Tilman, Keck
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Metrologia, 2009
This paper reviews the current status of air-kerma cavity standards for gamma rays from 60Co, 137Cs and 192Ir sources. It describes the basic principles and the theories to determine the air-kerma rate from the ionization current of graphite-walled cavity ionization chambers. A typical design of a cavity chamber is shown and described.
L Büermann, D T Burns
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This paper reviews the current status of air-kerma cavity standards for gamma rays from 60Co, 137Cs and 192Ir sources. It describes the basic principles and the theories to determine the air-kerma rate from the ionization current of graphite-walled cavity ionization chambers. A typical design of a cavity chamber is shown and described.
L Büermann, D T Burns
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Archives of Surgery, 1930
That pulmonary hypoventilation exists after abdominal operation is a well accepted fact. The alteration in the type of respiration, the limitation of respiratory effort and the sense of thoracic oppression which many of these patients exhibit or complain of are evidence of this fact.
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That pulmonary hypoventilation exists after abdominal operation is a well accepted fact. The alteration in the type of respiration, the limitation of respiratory effort and the sense of thoracic oppression which many of these patients exhibit or complain of are evidence of this fact.
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STUDIES ON THE COMPOSITION OF AIR IN THE TYMPANIC CAVITY
Archives of Otolaryngology - Head and Neck Surgery, 1955COMPOSITION OF AIR IN THE TYMPANIC CAVITY OF PATIENTS WITH STENOSIS OF THE EUSTACHIAN TUBE IF THE Eustachian tube remains closed, the air in the tympanic cavity gets gradually thinner, leading to retraction of the tympanic membrane. Bezold interpreted this phenomenon to be precisely the same as respiration.
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Implosion of spherical and cylindrical air cavities
Multiscale and Multidisciplinary Modeling, Experiments and Design, 2020Collapses of various air cavities (or bubbles) surrounded by much higher water pressures were investigated using the analytical equations as well as the finite element analysis (FEA) to understand the characteristics of the collapsing cavities and the propagation of shock waves resulting from the collapse. Both spherical and infinitely long cylindrical
S. Sugimoto, Y. W. Kwon
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