Pseudomonas methylotrophus is used to produce single cell protein from methanol in a 1000-m3 pressure-cycle airlift fermenter. the biomass yield from substrate is 0.41 g g 1, ks is 0.7 mg l 1, and the maximum specific growth rate is 0.44 h 1. the medium contains 4% (w/v) methanol. a substrate conversion of 98% is desirable. the reactor may be operated in either batch or continuous mode. if operated in batch, an inoculum of 0.01% (w/v) is used and the downtime between batches is 20 h. if continuous operations are used at steady state, a downtime of 25 days is expected per year.

Which of the following is an easy way to remember the modified “x” tire rotation? a. nondrive wheels straight, cross the drive wheels b. drive wheels straight, cross the nondrive wheels c. drive wheels crossed, nondrive wheels straight d. drive wheels crossed, nondrive wheels crossed

Courses that are developed by subject matter experts, internal or extemal to the college or university. these programs are marketed by the school (clo2) marks a)-vocational schools b)-vendor training c)-colleges & universities d)-continuing education programs

Along 8-cm diameter steam pipe whose external surface temperature is 900c connects two buildings. the pipe is exposed to ambient air at 70c with a wind speed of 50 km/hr blowing across the pipe. determine the heat loss from the pipe per unit length. (b) air at 500c enters a section of a rectangular duct (15 cm x 20 cm) at an average velocity of 7 m/s. if the walls of the duct are maintained at 100c. a) the length of the tube for an exit temperature of the air to be 40 0c. b)the rate of heat transfer from the air. c) the fan power needed to overcome the pressure drop in this section of the duct.