A semiconductor device has a well region formed within a substrate. The baffles comprise a body having an edge wall configured to direct the flow of a composition against a substrate edge. An electrode resistivity measurement system quantifies and may compensate for increasing resistance the electrodes and the patient that results from the length of time the electrodes are installed on a patient. In one embodiment of the invention, the body has a substantially linear shape between the ends. The voice service browser then executes the applet to provide the desired service including the delivery of content items through a text-to-voice converter or the like.