A turbine element airfoil has a cooling passageway network with a slot extending from a trailing passageway toward the trailing edge. An output unit outputs an analog signal for each pixel circuit by sampling and holding an electrical signal in accordance with a voltage of an accumulation unit for each pixel circuit. One path, a line inductor path, may advantageously incur minimal power loss when the engine generator is supplying rated power to a load. The groove is adapted to receive a coiled spring. One or more candidates can be chosen from the answer set and assigned to the block. The photosensitive layer contains terephthalate esters additives.