Results 21 to 30 of about 10,217 (218)

The Month-of-the-Year Effect in the European, American, Australian and Asian Markets

open access: yesEconomies, 2021
This paper examines the existence of the month-of-the-year effects in four different continents, namely Europe, Asia, America, and Oceania. Nine indexes were analyzed in order to verify differences between monthly returns from January 1990 to December ...
Gualter Couto   +3 more
doaj   +1 more source

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

Theoretical Modeling of Bubbling Regimes in Bubble Formation with Bubble-Bubble and Bubble-Wall Interactions

open access: yesJOURNAL OF CHEMICAL ENGINEERING OF JAPAN, 2008
In this study, a theoretical model for prediction of bubbling regimes in bubble formation from a single submerged orifice has been developed. The model takes into account both chamber pressure fluctuations, and bubble–bubble and bubble–wall interactions on bubbling regimes.
Xiao, Z. Y., Tan, R. B. H.
openaire   +2 more sources

Bubbles Tomorrow and Bubbles Yesterday, but Never Bubbles Today? [PDF]

open access: yesBusiness Economics, 2013
Considering their importance and the amount of effort that has gone into understanding them, asset price bubbles continue to perplex. The evidence of these bubbles seldom squares with what would be expected from standard asset price theory. Unlike the suggestions from theory, expectations of prices of both stocks and houses tend to be procyclical—price
openaire   +3 more sources

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

Control of bubble size and bubble number in bubble electrospinning

open access: yesComputers & Mathematics with Applications, 2012
AbstractThe surface tension of a bubble depends upon its size; a smaller bubble requires a smaller electronic force for fabrication of ultrafine fibers using bubble electrospinning. The electronic field triggers rupture of interacted bubbles to form daughter bubble cascades, so a very low voltage is needed for nanofiber fabrication.
Ji-Huan He, Yong Liu
openaire   +2 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

Blowing bubbles: Dermoscopy of bubble hair

open access: yesInternational Journal of Trichology, 2017
Exposing wet hair to high temperatures can create gas bubbles within the hair shaft, leading to brittle, dry hairs in a disorder known as bubble hair abnormality. We present a case of a 61-year-old woman who presented for hair breakage over her crown. She regularly dried her damp hair with a blow dryer.
Albers, Lauren N   +2 more
openaire   +3 more sources

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