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Use diffusion theory to estimate light penetration in biological tissues. A 10-mW isotropic point source is buried in an infinite turbid medium. Assume that the absorption coefficient is 0:1 cm-1, the scattering coefficient of a 5-cm thick tissue is 100 cm-1, the scattering anisotropy is 0.9, and the wavelength of light is 0:5 mm. Calculate the light fluence rate 5 cm from the source.
How many years of useful life should be estimated for the reactor if 12 percent of the total annual expenses for the plant are due to the cost for reactor depreciation? The straight-line method for determining depreciation should be used.
Derive an expression for the optimum economic thickness
The wall is well insulated on one side while the other side is exposed to a fluid at 92 degrees Celsius with a convection heat transfer coefficient of h=500 W/m^2.
A solution of nitric acid has a specific gravity = 1.502. Stating that the concentration of nitric acida. molarity
A distillation column separates benzene from toluene using a control scheme similar to that shown in Figure (a). Make a practice HAZOP study of the plant section and add any instrumentation that is needed to develop the full P and I diagram.
200 kg of carbon dioxide are stored in a tank at 25 °C and 70 bar. Is carbon dioxide an ideal gas under the conditions in the tank?
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..
Continuous Stirred Tank Reactor (CSTR) : Flow rate and Reactor Volume, The liquid phase reactions
You have just been hired as part of the opening management team for a new restaurant in the area. As a group, chose 1 of the concepts from a team members' Week One Individual Project to utilize as your restaurant.
Which alarms should activate a shutdown trip, and which valves should be closed?
The core loss at rated voltage is 45 W, and the copper loss at rated load is 100 W. Neglect the exciting current of the transformer. Find the per-unit voltage regulation when the transformer is supplying full load at 110 V and 0.9 lagging power fa..
If the temperature of the contents is increased by 10 C degrees, the reading on the Kelvin thermometer should increase by 273 K
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