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Careful consideration of the bioreactor agitation and aeration system is required in order to maintain a homogeneous environment and provide sufficient oxygen transfer rates to meet cellular metabolic requirements.
Both agitation and aeration need to be considered together as they have an influence on the mechanical design of the fermenter, the oxygen transfer characteristics of the vessel and its power requirements.
There are a number of components that contribute to the aeration and agitation system efficiency including the height/diameter ratio. These are:
i. the impeller system (marine, flat-blade turbine etc) ii. the baffles (can also provide additional cooling capability) iii. the air sparger (ring, cross orifice, porous, nozzle) iv. the drive seal (mechanical, magnetic)
Natur e of Bending Stress If the beam is not loaded, it will not bend as shown in the figure-a. But if the beam is loaded, it will bend as shown in the figure-b, whatever may
Determine the moment of resistance of the flitched beam: A flitched beam consists of a wooden beam of width 120 mm & depth 250 mm & mild steel plates of thickness 10 mm & widt
how can we produce electricity from sound energy
What are the Special Considerations in Planning The dimensions of the foundation should be such that for low-speed machines (operating speed less than 500 rpm) the natural fre
Conve r t following reading of pressure to kPa, supposing that the barometer reads 760mm Hg. (1) 90cm Hg gauge (2) 40cm Hg vacuum (3) 1.2m H 2 O gauge Sol: Given
a) An epicyclic gear have three wheels A, B and C. Wheel A has 72 internal teeth, wheel C has 32 external teeth. The wheel B gears with both A and C is carried on an arm which move
m=4.9Kg, K=3694 N/m, x=0.013m. I have this much details, now I want to find the damping constant ''b''. I hv tried so much, but this question needs damping ratio ''zeta'' or damped
Evaluate the motion of system: Q : Block A and B are connected by a rigid horizontally bar planed at each end are placed on the inclined planes as shown in the figure giv
What do you understand by interference between two mating gears ? if interference between two involutes gears is to be avoided then show that the maximum length of arc of contact w
How is bearing capacity of soil varied? The bearing capacity of soil varies not only with its strength but also with the magnitude and distribution of the load. When a load Q,
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