The invention relates to a device and a method for intraluminal imaging. In certain embodiments, the invention provides systems for analyzing a sample that include an electric source, a vacuum chamber including a conducting member, in which the conducting member is coupled to the electric source, a sample introduction member coupled to the vacuum chamber, and a mass analyzer. The digital computer varies the engine RPM over the operating range of the engine to determine corresponding map values for storage in an injector signal modifier. 0% Mn, 25-35% Cr, 4-10% Ni, 2-6% Mo, 0. The hydrolyzed okara has a diminished water-holding capacity and is useful for supplementing the protein and fiber content of food products. The visual attribute sensor has a field of view covering an area of the conveyor at a certain downstream location so as to sense an area of any sheet on the conveyor at this downstream location.