A compact semiconductor structure having back gate for controlling threshold voltages and associated method of formation is disclosed. The textile material may be produced according to a plain weave or derivative thereof, for example, the density of the warp threads and the weft threads may be balanced. Execution of a series of RF excitation pulses with fast spin echo readout is timed such that signal from blood is near a null point before acquiring data for each spatial slice. For example, the indexer may identify a copyright notice appearing in a plurality of related articles. The base of the lower unit includes a number of smaller size perforations.