Demonstration of a 2×2 MIMO-UWOC systemwith large spot against air bubbles

2021 ◽  
Author(s):  
Xiao Chen ◽  
Yizhan Dai ◽  
Zhijian Tong ◽  
Xingqi Yang ◽  
Li Xin ◽  
...  
Keyword(s):  
Air Bubbles ◽  
Large Spot

scholarly journals Air bubbles play a role in shear thinning of non-colloidal suspensions

2021 ◽  
Vol 33 (1) ◽  
pp. 011702
Author(s):  
Yuan Lin ◽  
Ying Wang ◽  
Zixin Weng ◽  
Dingyi Pan ◽  
Jiawang Chen
Keyword(s):  
Colloidal Suspensions ◽  
Shear Thinning ◽  
Air Bubbles

scholarly journals Effect of cannulation site on emboli travel during cardiac surgery

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Mira Puthettu ◽  
Stijn Vandenberghe ◽  
Stefanos Demertzis
Keyword(s):  
Cardiac Surgery ◽  
In Vitro Study ◽  
Blood Stream ◽  
Air Bubbles ◽  
Arterial Tree ◽  
Air Bubble ◽  
Cannulation Site ◽  
The Brain

Abstract Background During cardiac surgery, micro-air emboli regularly enter the blood stream and can cause cognitive impairment or stroke. It is not clearly understood whether the most threatening air emboli are generated by the heart-lung machine (HLM) or by the blood-air contact when opening the heart. We performed an in vitro study to assess, for the two sources, air emboli distribution in the arterial tree, especially in the brain region, during cardiac surgery with different cannulation sites. Methods A model of the arterial tree was 3D printed and included in a hydraulic circuit, divided such that flow going to the brain was separated from the rest of the circuit. Air micro-emboli were injected either in the HLM (“ECC Bubbles”) or in the mock left ventricle (“Heart Bubbles”) to simulate the two sources. Emboli distribution was measured with an ultrasonic bubble counter. Five repetitions were performed for each combination of injection site and cannulation site, where air bubble counts and volumes were recorded. Air bubbles were separated in three categories based on size. Results For both injection sites, it was possible to identify statistically significant differences between cannulation sites. For ECC Bubbles, axillary cannulation led to a higher amount of air bubbles in the brain with medium-sized bubbles. For Heart Bubbles, aortic cannulation showed a significantly bigger embolic load in the brain with large bubbles. Conclusions These preliminary in vitro findings showed that air embolic load in the brain may be dependent on the cannulation site, which deserves further in vivo exploration.

scholarly journals Internal melt figures in ice by rapid adiabatic compression

1994 ◽  
Vol 40 (134) ◽  
pp. 132-134
Author(s):  
R.E. Gagnon ◽  
C. Tulk ◽  
H. Kiefte
Keyword(s):  
Phase Transformations ◽  
Grain Boundaries ◽  
Single Crystals ◽  
Adiabatic Compression ◽  
Air Bubbles ◽  
Water Ice ◽  
Deep Focus ◽  
And Behavior ◽  
First Time

AbstractSingle crystals and bicrystals of water ice have been adiabatically pressurized to produce, and clearly illustrate, two types of internal melt figures: (1) dendritic figures that grow from nucleation imperfections on the specimen’s surface, or from air bubbles at grain boundaries, into the ice as pressure is elevated; and (2) compression melt fractures, flat liquid-filled disks, that nucleate at imperfections in the crystal and grow with the application of pressure eventually to sprout dendritic fingers at the periphery. The transparency of the ice permitted visualization of the growth and behavior of the figures, and this could be an important tool in understanding the role of phase transformations in deep-focus earthquakes. Correlation between figure size and pressure is noted for the first time.

Sending Blood Gas Specimens Through Pressurized Transport Tube Systems Exaggerates the Error in Oxygen Tension Measurements Created by the Presence of Air Bubbles

1995 ◽  
Vol 81 (1) ◽  
pp. 179-182 ◽  
Author(s):  
Michael H. McKane ◽  
Peter A. Southorn ◽  
Paula J. Santrach ◽  
Mary F. Burritt ◽  
David J. Plevak
Keyword(s):  
Oxygen Tension ◽  
Air Bubbles ◽  
Blood Gas ◽  
Transport Tube

Experiments on air bubbles injection into a vertical shell and coiled tube heat exchanger; exergy and NTU analysis

2015 ◽  
Vol 103 ◽  
pp. 973-980 ◽  
Author(s):  
Hamed Sadighi Dizaji ◽  
Samad Jafarmadar ◽  
Majid Abbasalizadeh ◽  
Saleh Khorasani
Keyword(s):  
Heat Exchanger ◽  
Air Bubbles ◽  
Coiled Tube ◽  
Tube Heat Exchanger

Impeding effect of air bubbles on normal grain growth of ice

2012 ◽  
Vol 42 ◽  
pp. 184-193 ◽  
Author(s):  
Nobuhiko Azuma ◽  
Tutomu Miyakoshi ◽  
Syuhei Yokoyama ◽  
Morimasa Takata
Keyword(s):  
Grain Growth ◽  
Air Bubbles
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