A feed injector for use in a gasification apparatus comprising plural concentric tubes converging at an outlet tip, at least one interior tube of the plural concentric tubes having a plurality of static, helically-twisted mixing elements fixed to an exterior surface thereof. The transmission path is monitored at periodic intervals. Information generated during a search session is collected by the system and is added to the knowledge-database. A latch circuit is selected on the basis of a control signal instead of a clock signal. The method further includes forming a transistor having a channel region, wherein at least a portion of the channel region is formed from the layer of the semiconductor structure. A second gate line supplies a second bias potential to the gate terminal of the second transistor.