Results 21 to 30 of about 214,758 (316)

Bubble CPAP: Not All Bubbling Is Good Bubbling [PDF]

open access: yesRespiratory Care, 2013
Since its introduction over 30 years ago,[1][1] bubble CPAP has become an important part of the management of neonatal respiratory distress syndrome. Similar to “ventilator-derived” or “machine-derived” CPAP devices, bubble CPAP devices apply pressure to the neonatal respiratory system ...
openaire   +2 more sources

Shapes and Rise Velocities of Single Bubbles in a Confined Annular Channel: Experiments and Numerical Simulations

open access: yesFluids, 2021
Shapes and rise velocities of single air bubbles rising through stagnant water confined inside an annular channel were investigated by means of experiments and numerical simulations.
Andrea Cioncolini, Mirco Magnini
doaj   +1 more source

Numerical Simulation Research of Bubble Characteristics and Bubble Departure Diameter in Subcooled Flow Boiling

open access: yesMathematics, 2022
Three-dimensional subcooled flow boiling of R134a in a horizontal tube was simulated by a VOF (volume of fluid) model combined with the level set method.
Jinfeng Wang   +5 more
doaj   +1 more source

Bubbles, Bubbles Everywhere! [PDF]

open access: yesPractical Neurology, 2003
Back in 1993 it had been a fairly average afternoon in the neurovascular clinic; a couple of obese, hypertensive smokers with clear-cut transient ischaemic attacks whose seemingly programmed lack of motivation to modify their vascular risk factors would subsequently challenge all the persuasive skills of my Specialist Nurse.
openaire   +1 more source

Numerical Investigation of Helium Bubble Rising Behavior in Cross-Type Channel

open access: yesFrontiers in Energy Research, 2020
In a certain nuclear reactor, the coolant channel is a cross-type channel. There is little research about bubble rising behavior in this kind of channel, but the neutron detection would be affected by the bubbles.
Chunjie Zeng   +7 more
doaj   +1 more source

Effect of the Inclined Part Length of an Inclined Blade on the Cavitation Characteristics of Vortex Pumps

open access: yesMachines, 2022
To study the effect of the length of the second inclined section of the inclined vane on the vortex structure and pressure distribution inside a vortex pump, this paper uses a combination of numerical simulations (CFD) and experimental verification ...
Zhuofan Yin   +7 more
doaj   +1 more source

Nuttier bubbles [PDF]

open access: yesJournal of High Energy Physics, 2006
We construct new explicit solutions of general relativity from double analytic continuations of Taub-NUT spacetimes. This generalizes previous studies of 4-dimensional nutty bubbles. One 5-dimensional locally asymptotically AdS solution in particular has a special conformal boundary structure of $AdS_3\times S^1$.
Astefanesei, Dumitru   +2 more
openaire   +3 more sources

Shear-free boundary in Stokes flow

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1996
A theorem of Harper for axially symmetric flow past a sphere which is a stream surface, and is also shear-free, is extended to flow past a doubly-body 𝔅 consisting of two unequal, orthogonally intersecting spheres. Several illustrative examples are given.
D. Palaniappan   +2 more
doaj   +1 more source

Effectiveness of rituximab in the treatment of patients with pemphigus vulgarus [PDF]

open access: yesVestnik Dermatologii i Venerologii
Pemphigus vulgaris (PV) is an autoimmune disease that affects the mucous membranes and/or skin, characterized by the formation of bubbles of various sizes with a thin flaccid cap and serous contents. Lack of timely treatment can lead to death. Due to the
Arfenya E. Karamova   +6 more
doaj   +1 more source

A Silica Capillary-Based Sensor with Access Channels for the Simultaneous Measurement of Pressure and Temperature

open access: yesPhotonics, 2023
A hybrid fiber sensor for the simultaneous measurement of pressure and temperature is proposed. The sensor is constituted of a section of silica capillary tube (SCT) whereat access channels are created with two different methods: instilling a bubble on ...
João P. Santos   +3 more
doaj   +1 more source

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