Analog models of blood flow
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The document describes two analog models used to model blood flow: mechanical and electrical models. The mechanical (Windkessel) model represents the aorta and peripheral vessels as a compliant air cell and rigid tube with resistance. Blood flow and pressure are modeled with linear equations. The electrical model represents vessel resistance as resistors, compliance as capacitors, and inertia as inductors to investigate blood flow phenomena through analogous linear differential equations. Kirchhoff's law is then used to derive the governing differential equation.
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Cancer treatment has advanced significantly over the years, offering patients various options tailored to their specific type of cancer and stage of disease. Understanding the different types of cancer treatments can help patients make informed decisions about their care. In this ppt, we have listed most common forms of cancer treatment available today.
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Test bank clinical nursing skills a concept based approach 4e pearson educationLinga Mudra(Mark of Siva) generates excessive heat within the body
Benefits:
Linga mudra generates excessive heat within the body and is very useful for dealing with colds.
It also helps in boosting the immune system and makes the body more resistant to colds and similar infections.
The benefits of penis posture also extend to the respiratory system and it can help loosen the phlegm accumulated from the throat.
This posture also helps in weight loss.
Discomfort experienced in an air conditioned room is relieved by this mudra.
Difficulty in breathing can be relieved by this mudra.
Congested nose can be relieved by this mudra immediately and one can get good sleep.
It controls the flow of the menstrual cycle. Performing the Linga mudra with the Sun Mudra gives better results – both 15 minutes each, one after the other.
When navel center is shifted from its original place, comes back to its place by this mudra.
Correlation between surface motion and heart-breast distance for breast cance...
Lisa Dietrich,
MSc, Medical physicist in training and PhD candidate
Universitätsklinikum Erlangen
Germany
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Types of Cancer Treatments | Forms of cancer treatment
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Test bank clinical nursing skills a concept based approach 4e pearson educati...
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Linga Mudra(Mark of Siva) generates excessive heat within the body
Linga Mudra(Mark of Siva) generates excessive heat within the body
Correlation between surface motion and heart-breast distance for breast cance...
Correlation between surface motion and heart-breast distance for breast cance...
Test bank advanced health assessment and differential diagnosis essentials fo...
Test bank advanced health assessment and differential diagnosis essentials fo...
Analog models of blood flow
- 1. ANALOG MODELS OF BLOOD FLOW Gilu Francis
- 2. Mechanical Models (Windkessel) • Suggested by Otto Frank (1899) • The aorta and large blood vessels are represented by a linear compliant air-cell • Peripheral vessels are replaced by a rigid tube with a linear resistance • V= C. P • Qout =P/R • where V, P, and C = volume, pressure, and compliance of the air-cell and are linearly related • Qout = outflow of the air-cell • R = linear resistance of the rigid tube • Pvenous = 0
- 3. (a) The Windkessel model of the aorta and peripheral circulation. (b) Electrical model of the Windkessel model.
- 4. • Conservation of mass requires that
- 5. Electrical Models • In order to investigate linear approximations of complex blood flow phenomena, electrical analogs, which result in analogous linear differential equations, were developed (Dinnar, 1981). • In these models the vessel resistance to blood flow is represented by a resistor R, the tube compliance by a capacitor C, and blood inertia by an inductance L. Assuming that blood flow and pressure are analogous to the electrical current and voltage, respectively, blood flow through a compliant vessel (e.g., artery or vein) may be represented by an electrical scheme.
- 6. Following Kirchhoff’s law for currents, the governing differential equation becomes