Bio engineering

Foundations of Conservation Principles
Problems
2.1 For problem parts (a) through (q), do the following:
0 Draw a picture of the system.
0 Name an extensive property that can be counted.
0 Label the system, surroundings, and system boundary.
0 State the time period of interest. Explain.
0 Identify the system as open, closed, or isolated and state why.
0 Identify the system as steady-state or dynamic and state why.
0 Identify whether the system has a reaction and/or energy interconversion and state why.
0 Should an algebraic, differential, or integral equation be used to describe the system? State why.
0 Is the selected extensive property conserved in this system? State why.
(Note: There can be more than one correct answer; it depends on how you set up the system.)
1″ (1) When a person gives blood, the blood flows from his body into a collec-tion bag for about half an hour. You are interested in writing a model to determine the blood in the person’s body.

(q) Nerve growth factor (NGF) is from the neurotrophin family of proteins that has been shown to have trophic effects on some cholinergic systems of the brain. Since it helps prevent neurons from dying, work has been done to see if NGF is viable as a therapeutic agent in the treatment of Alzheimer’s disease or other neurodegenerative disorders. One possible
treatment involves fabricating polymers into porous implants loaded With NGF powder and surgically placing them within the brain. Consider a model to track implanted NGF in the brain.

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