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A team of chemical engineers [Proc. Natl. Acad. Sci. USA, 94, 8984 (1997)] has shown that oxidized polypyrrole supports the growth of structural support cells needed for nerve regeneration in rats. In particular, the team showed that rat nerve cells responded to electrical stimulus from the polymer by producing extensions called neurites that are twice as long as neurites produced in the absence of the stimulus.
(a) Calculate the current generated in a 10-mm-long, 10.0 × 10-6-m-diameter polypyrrole filament that is subjected to a electric field gradient of 12 V. Assume that the conductivity of oxidized polypyrrole is 1.5 x 107 Ω-1m-1. (b) One drawback for this application is that polypyrrole is very fragile and not biodegradable. Suggest a method for evaluating the long-term biocompatibility of polypyrrole fibers in vivo.
GIS study for a place called Brookley Field, Mobile, Alabama ( Go Google maps).
The purpose of this assignment is to develop a paper design of a system to address an important need.
Explain the operation of an encoder.
One of the strengths of numerical methods is their ability to handle complex boundary conditions. In the sketch, the boundary condition changes from specified heat flux, if: (into the domain), to convection, at the location of the node m, n. Write..
A cyclone of 0.5 m body diameter has an Eu value of 50 and an Stk50 value of 5 x 10-3. Using an aliiwble pressure drop of 1200 Pa, what is the voluthetric flow capacity of the cyclone and the cut size
Consider an exponentially distributed RV with a=0, use the inverse transform method to generate a sequence of exponentially distributed random numbers for different values of the parameter b. Plot the histograms (probability density function (pdf))..
Create an interface that allows Alexander and Elizabeth to view the flowers in their pack. On this interface we should have an add button that adds new flowers
You need to submit your design specification report on week 15 (one report per group). The report should be between 15-20pages (A4) and should cover the following points:
What is the largest value of n so that P(Y > 0) = 0.02 and briefly explain why the Bernoulli process assumptions might not hold here.
modify the airline terminal problem by adding agent breaks. the 16 hours are divided into two 8-hour shifts. agent
Find the corresponding Stall Speeds for 2G, 3G, 4G, and so on for your selected aircraft (up to the positive load limit from 4. above), using the relationship of Eq. 14.5. You can use the table below to track your results.
State reasons for the popularity of decline mining in modern operations. What factors need to be taken into account in deciding the cut off depth beyond which shaft operations should be used instead of decline access.
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