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Suppose a membrane has an active Na-K pump with
and Cm = 1mF as shown in Figure 11.15. Design a stimulus that will drive Vm to threshold at 3 ms. Assume that the threshold potential is 40mV.
(a) Find the current pulse magnitude and duration.
(b) Find and sketch Vm.
A fermentation reactor is charged with a sterile feed of growth media at 35 °C and inoculated with a batch of microorganisms. The batch is allowed to grow for 10 days. During the growth period the temperature is maintained at 37 °C by circulating ..
U-235 undergoes many different fission reactions. For one such reaction, when U-235 is struck with a neutron, Ce-144 and Sr-90 are produced along with some neutrons and electrons.
Determine the pinch temperature and the minimum utility requirements for the process set out below. Take the minimum approach temperature as 15 °C. Devise a heat-exchanger network to achieve maximum energy recovery.
In Addition, Iodine-131 is used in the diagnosis and treatment of thyroid disease and has a half-life of 8.1 days. If a patient with thyroid disease consumes a sample of Na131I containing 10 of 131I, how long will it take for the amount of 131I to..
Find the air fuel ratio for stoichiometric combustion of Butane by volume. Calculate the percentage of carbon dioxide present in the DRY flue gas if 30% excess air is used
The feed (CAo= 1.0, CRo= 0, CSo= 0) enters two mixed reactors in series (?1= 2.5 min,?2= 10 min) knowing the composition in the first reactor (CA1= 0.4, CR1= 0.4, CS1= 0.2),find the composition leaving the second reactor (using fractional yield co..
If a wye-delta starting method is employed, find the starting current and the starting torque.
Check to see that the six outputs (Y0 through Y5) display the number of hours, minutes, and seconds.
Is this a reasonable value from a physiologic point of view? Would the patient be considered normal or diabetic?
The heat capacity of thereactants and products are 1.95 kJ/kg-K, the volumetric flow rate is 0.33 m3/hr, and the feedtemperature is 20oC. If the conversion is 95%, calculate (a) the reactor size and (b) the temperature of the reaction mixture, ift..
Neglect rotational and stray-load losses. If the rotor-circuit resistance in all phases is increased to 5 times the original resistance,
Draw another diagram overlaying the Pourbaix diagrams for nickel and silver and use this diagram to explain the likely outcome of holding a solution of nickel ions in a silver container.
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