Electronically Tunable Realization of the Three-Element Arterial Windkessel Model

2021 ◽  
Author(s):  
Kleoniki Baxevanaki ◽  
Stavroula Kapoulea ◽  
Costas Psychalinos ◽  
Ahmed S. Elwakil
Keyword(s):  
Windkessel Model ◽  
Electronically Tunable

Evaluation of the Circulatory Dynamics by using the Windkessel Model in Different Body Positions

2011 ◽  
Vol 131 (1) ◽  
pp. 140-145
Author(s):  
Kiyoshi Kotani ◽  
Fumiaki Iida ◽  
Yutaro Ogawa ◽  
Kiyoshi Takamasu ◽  
Yasuhiko Jimbo
Keyword(s):  
Windkessel Model ◽  
Circulatory Dynamics

Electrolytes for Reversible Zinc Electrodeposition for Dynamic Windows

2021 ◽  
Author(s):  
Desmond C Madu ◽  
Shakirul M Islam ◽  
Hanqing Pan ◽  
Christopher Barile
Keyword(s):  
Aqueous Electrolytes ◽  
Zinc Electrodeposition ◽  
Metal Electrodeposition ◽  
Electronically Tunable

Reversible metal electrodeposition is a promising approach for the construction of dynamic windows with electronically tunable transmission. In this manuscript, we study a series of aqueous electrolytes that support reversible...

scholarly journals The effect of beta-blockers on hemodynamic parameters in patient-specific blood flow simulations of type-B aortic dissection: a virtual study

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Mohammad Amin Abazari ◽  
Deniz Rafieianzab ◽  
M. Soltani ◽  
Mona Alimohammadi
Keyword(s):  
Aortic Dissection ◽  
Clinical Decision Making ◽  
Beta Blockers ◽  
False Lumen ◽  
Specific Treatment ◽  
Left Ventricular ◽  
Patient Specific ◽  
Type B ◽  
Windkessel Model ◽  
Computed Tomography Images

AbstractAortic dissection (AD) is one of the fatal and complex conditions. Since there is a lack of a specific treatment guideline for type-B AD, a better understanding of patient-specific hemodynamics and therapy outcomes can potentially control the progression of the disease and aid in the clinical decision-making process. In this work, a patient-specific geometry of type-B AD is reconstructed from computed tomography images, and a numerical simulation using personalised computational fluid dynamics (CFD) with three-element Windkessel model boundary condition at each outlet is implemented. According to the physiological response of beta-blockers to the reduction of left ventricular contractions, three case studies with different heart rates are created. Several hemodynamic features, including time-averaged wall shear stress (TAWSS), highly oscillatory, low magnitude shear (HOLMES), and flow pattern are investigated and compared between each case. Results show that decreasing TAWSS, which is caused by the reduction of the velocity gradient, prevents vessel wall at entry tear from rupture. Additionally, with the increase in HOLMES value at distal false lumen, calcification and plaque formation in the moderate and regular-heart rate cases are successfully controlled. This work demonstrates how CFD methods with non-invasive hemodynamic metrics can be developed to predict the hemodynamic changes before medication or other invasive operations. These consequences can be a powerful framework for clinicians and surgical communities to improve their diagnostic and pre-procedural planning.

TOCA-based electronically-tunable continuous-time filters

1991 ◽  
Vol 71 (2) ◽  
pp. 253-264
Author(s):  
SHEN-IUAN LlU ◽  
JYH-SHYAN WANG ◽  
HEN-WAI TSAO ◽  
JINGSHOWN WU
Keyword(s):  
Continuous Time ◽  
Continuous Time Filters ◽  
Electronically Tunable

Electronically tunable floating resistor

2004 ◽  
Vol 91 (11) ◽  
pp. 665-673 ◽  
Author(s):  
P. Pawarangkoon * ◽  
W. Kiranon
Keyword(s):  
Electronically Tunable
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