The various preparations of insulin available for prescription vary in onset, intensity, and duration of action. Animal source insulins, pork and beef, have been discontinued in the U.S. market. Human insulin is derived by recombinant DNA technology and is termed quick acting, intermediate acting, or long acting.
The pole lathe was invented sometime before the 13th century AD. Although it represented a great advance the pole lathe was not that much more complicated than its predecessors. The differences consisted of a framework to raise the bed of the lathe clear of the ground, the addition of a pole and a treadle.
Worlds largest lathe (self.Skookum) submitted 25 days ago by crujones43 I am so bummed that I am not able to post pictures for you fine fellers but at my work they just installed what I am told is the worlds largest lathe. They are Machining a crack out of a turbine spindle for a nuclear powered steam turbine. The lathe is 60ft long with a 20ft swing. If any pics show up publicly (for publicity) I'll link them here.