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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)
RESISTANCE WELDING The types are as follows: Resistance Spot Welding Resistance Seam Welding Projection Welding Flash Butt Welding Flash Butt Welding Stit
define thormodynamics and its laws
Q. What is Metal Jacketing? a) Metal jacketing shall be Alcan T-3000-H14 series, T-1100-H14 or approved equivalent stucco embossed aluminum with a factory applied moisture barr
what is structure with example
Determine- cutting speed, Material removal rate and Machining time. A 150 mm long 12.7 mm diameter stainless steel rod is being turned to 12.19 mm diameter on a centre lathe.
Determine the reaction at specific points: A light rod AD can be supported by frictionless pegs at B and C and rests against frictionless wall at A as shown in th
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Explain the Laws of Thermodynamics Usually thermodynamics contains four laws; a. Zeroth law: this law deals with thermal equilibrium and establishes an idea of temperature.
Determine the Forces in Members in Roof Truss Determine the forces in members EF, EL, FL, and LK in the roof truss shown below and state whether the members are in tension or
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