Acoustic observations and characterization of oceanic methane gas bubbles rising from the seabed

2016 ◽  
Vol 140 (4) ◽  
pp. 3077-3077 ◽  
Author(s):  
Thomas C. Weber
Keyword(s):  
Gas Bubbles ◽  
Methane Gas

Dynamic Characterization of a Valveless Micropump Considering Entrapped Gas Bubbles

2013 ◽  
Vol 135 (9) ◽  
Author(s):  
Songjing Li ◽  
Jixiao Liu ◽  
Dan Jiang
Keyword(s):  
Numerical Simulation ◽  
Theoretical Model ◽  
Experimental Studies ◽  
Gas Bubbles ◽  
Chamber Pressure ◽  
Dynamic Characterization ◽  
Valveless Micropump ◽  
Performance Deterioration ◽  
Trapped Gas

Unexpected gas bubbles in microfluidic devices always bring the problems of clogging, performance deterioration, and even device functional failure. For this reason, the aim of this paper is to study the characterization variation of a valveless micropump under different existence conditions of gas bubbles based on a theoretical modeling, numerical simulation, and experiment. In the theoretical model, we couple the vibration of piezoelectric diaphragm, the pressure drop of the nozzle/diffuser and the compressibility of working liquid when gas bubbles are entrapped. To validate the theoretical model, numerical simulation and experimental studies are carried out to investigate the variation of the pump chamber pressure influenced by the gas bubbles. Based on the numerical simulation and the experimental data, the outlet flow rates of the micropump with different size of trapped gas bubbles are calculated and compared, which suggests the influence of the gas bubbles on the dynamic characterization of the valveless micropump.

LPE growth and characterization of InGaAsP/InP heterostructures: IR light-emitting diodes at 1.66 μm. Application to the remote monitoring of methane gas

1997 ◽  
Vol 62 (1-3) ◽  
pp. 624-632 ◽  
Author(s):  
V.V. Volkov ◽  
J. Van Landuyt ◽  
K. Marushkin ◽  
R. Gijbels ◽  
C. Férauge ◽  
...  
Keyword(s):  
Remote Monitoring ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Methane Gas ◽  
Ir Light

scholarly journals Characterization of individual submicron perfluorocarbon gas bubbles by ultrasonic backscatter

2005 ◽  
Vol 6 (3) ◽  
pp. 175-181 ◽  
Author(s):  
E. Carr Everbach ◽  
Damir B. Khismatullin ◽  
John T. Flaherty ◽  
Ronald A. Roy
Keyword(s):  
Gas Bubbles ◽  
Ultrasonic Backscatter

scholarly journals Characterization of fission gas bubbles in irradiated U-10Mo fuel

2017 ◽  
Vol 131 ◽  
pp. 459-471 ◽  
Author(s):  
Andrew M. Casella ◽  
Douglas E. Burkes ◽  
Paul J. MacFarlan ◽  
Edgar C. Buck
Keyword(s):  
Gas Bubbles ◽  
Fission Gas
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