31. Each step involves certain basic building blocks called unit operations , such as extraction, filtration, and distillation. 32. They have plug and play scale up facilities in most chemical engineering and biotech engineering unit operations . 33. Furthermore, there are some unit operations which combine even these categories, such as reactive distillation and stirred tank reactors. 34. The high-firepower AC-130s typically give close air cover to forces on the ground or going in for small-unit operations . 35. An overall chemical process is commonly made up of steps called unit operations which occur in the individual units. 36. Multiple unit operation in the diesel era removed the need to pack the highest horsepower in a single unit. 37. The high-firepower planes typically give close air cover to forces on the ground or troops going in for small-unit operations . 38. The change to multiple unit operation was completed by June 1903 and all but two of the locomotives were scrapped. 39. The CAPE-OPEN project ended in 2001 and delivered interface specifications for unit operations ( in steady-state ) and thermodynamic components. 40. Class EN57 is capable of multiple unit operation with two or three units, using Scharfenberger couplers to connect units together.
