For a two-product distillation column (top and bottom product), there are typically five degrees of control freedom (control valves): 1  Reflux flow. 2  Top product flow. 3  Reboiler heat input flow.  Bottom product 1  flow. Pressure control valve (the specific location depends upon how the pressure is controlled).
What is that patch your coach is wearing? This weekend it is likely the coach of your favorite team - and the coach of the team he is competing against - will be wearing a patch on their shirt or jacket. College football coaches nationwide will join together this weekend in support of the Coach To Cure MD program, which will be held during games Saturday.
Uniform numbers in American football are unusual compared to those in other sports. They are displayed in more locations on the uniform; they are universally worn on both the front and back of the jersey; and in many cases TV numbers are displayed on either the jersey sleeves, the shoulder pad, or occasionally on the helmets.