Results 31 to 40 of about 120,370 (269)

Variability of Acoustically Evidenced Methane Bubble Emissions Offshore Western Svalbard

open access: yesGeophysical Research Letters, 2019
Large reservoirs of methane present in Arctic marine sediments are susceptible to rapid warming, promoting increasing methane emissions. Gas bubbles in the water column can be detected, and flow rates can be quantified using hydroacoustic survey methods,
Mario E. Veloso‐Alarcón   +8 more
doaj   +1 more source

Review on Efficiency and Anomalies in Stock Markets

open access: yesEconomies, 2020
The efficient-market hypothesis (EMH) is one of the most important economic and financial hypotheses that have been tested over the past century. Due to many abnormal phenomena and conflicting evidence, otherwise known as anomalies against EMH, some ...
Kai-Yin Woo   +3 more
doaj   +1 more source

Effect of frother concentration on bubble trailing vortex characteristics and particle entrainment in flotation

open access: yesMeitan kexue jishu, 2023
To investigate the effect of frother concentration on bubbles and their tail vortex zone characteristics in flotation is an important prerequisite for predicting the probability of particle coiling in the trailing vortex zone of flotation bubbles.
ZHU Jinbo   +6 more
doaj   +1 more source

Multiphysics Modelling Flow Disturbance Optimization of Proton Exchange Membrane Water Electrolysis Under Bubble Effects

open access: yesEnergies
In Proton Exchange Membrane Water Electrolysis (PEMWE), the two-phase flow distribution in the anode field significantly affects overall electrolysis performance.
Chengming Du   +7 more
doaj   +1 more source

The Effect of Rheology with Gas Bubbles on Linear Elastic Waves in Fluid-Saturated Granular Media

open access: yesInternational Journal of Applied Mechanics and Engineering, 2018
Elastic waves in fluid-saturated granular media depend on the grain rheology, which can be complicated by the presence of gas bubbles. We investigated the effect of the bubble dynamics and their role in rheological scheme, on the linear Frenkel-Biot ...
A.A. Ali, D.V. Strunin, A.A. Ali
doaj   +1 more source

Ethanol as a Probe for the Mechanism of Bubble Nucleation in the Diet Coke and Mentos Experiment

open access: yesMolecules, 2021
The Diet Coke and Mentos experiment involves dropping Mentos candies into carbonated beverages to produce a fountain. This simple experiment has enjoyed popularity with science teachers and the general public.
Thomas S. Kuntzleman   +1 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

Ultrasonic Propagation in Liquid and Ice Water Drops. Effect of Porosity

open access: yesSensors, 2021
This work studies ultrasonic propagation in liquid and ice water drops. The effect of porosity on attenuation of ultrasonic waves in the drops is also explored.
Michiel Mendonck   +6 more
doaj   +1 more source

Magnetic resonance imaging of oxygen microbubbles

open access: yesHealthcare Technology Letters, 2019
Oxygen loaded microbubbles are being investigated as a means of reducing tumour hypoxia in order to improve response to cancer therapy. To optimise this approach, it is desirable to be able to measure changes in tissue oxygenation in real-time during ...
Elinor Thompson   +6 more
doaj   +1 more source

Filter Bubble [PDF]

open access: yesInternet Policy Review, 2019
Introduced by tech entrepreneur and activist Eli Pariser in 2011, the ‘filter bubble’ is a persistent concept which suggests that search engines and social media, together with their recommendation and personalisation algorithms, are centrally culpable for the societal and ideological polarisation experienced in many countries: we no longer encounter a
openaire   +5 more sources

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