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A company affiliated with one for which you are working has recently developed a new method for genetically engineering skin cells in order that they overproduce a protein that is useful for the treatment of serious burn injuries. However, the company has no expertise in the field of polymers and biomaterials where they could possibly exploit this discovery in order to develop a skin substitute that will both cover the wound and treat it at the same time.
a) Discuss the properties of a ‘suitable' matrix in terms of what may be appropriate for maintaining the viability of these cells. What further information would you request from the cell biologists in order to make suitable judgments about the nature of the polymer that would be used.
b) What physical and mechanical properties would you consider in selecting a polymer for this application?
Calculate the work done in the isothermal reversible expansion of one mole of CH4 (g) from 1.00 dm3 to 10.00 dm3 at 300 K. Treat methane as a van der Waals gas. The van der Waals gas constants for methane are: a=2.3026 dm6⋅bar⋅mol-2 and b=0.043067 dm..
Develop a two-dimensional addressing system using a 6-to-64 decoder, a 64-word×128- bit matrix, and 16-input multiplexers. How many gates would such a system require?
Analysis of these publications outline the chiral ligands used and draw a catalytic cycle for one initermolecular and one intramolecular reaction - the asymmetric Heck reaction
Calculate the ratio of the total flux to the diffusion flux
Propane in the feed to the unit and 80% of the pentane fed to the unit. The mole fraction of butane in the distillate is yB ? 0.4 . The bottom stream contains all of the hexane fed to the unit. Calculate the distillate and bottoms streams flow rate a..
Name the microstructural products of eutectoid iron-carbon alloy (0.76 wt% C) specimens that are first completely transformed to austenite, then cooled to room temperature at the following rates:
Calculate the bubble-point temperature, evaluate f for the first guessed value of T, and then vary T in increments of ± 5°C until the value of f changes sign from its initial value - Briefly explain why the variations in bubble-point temperature f..
What is the IRR if the debt must be amortized over 15 years as a fixed cost of production?
One of the classical methods for the determination of the manganese content in steel is to convert all the manganese to the deeply colored permanganate ion and then to measure the absorption of light.
Find the density of liquid methane in a handbook and compare your answer to the tabulated value.
Wal-Mart is the largest corporation in the world, and it has obviously enjoyed tremendous success. But while many welcome its location in their communities, others do not. Some complain that its presence has too many negative effects on a communit..
The process used in the manufacture of aniline from nitrobenzene is described in Appendix F, Design Problem F.8, which is available in the online material at booksite.Elsevier.com/Towler.
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