A method of anticipating an access code such as a telephone number. Particularly, the grinding center may be used for operations including but not limited to grinding, buffing, polishing, sanding, and cleaning. The metal silicide contact layer has a perimeter portion extending over the p-well guard ring region of the semiconductor substrate and the p-well guard ring region has a doping level establishing a work function difference relative to the perimeter portion of the metal silicide contact layer to form a guard ring Schottky diode. Spectra from locations of interest are extracted and analyzed to assess a characteristic of the organ sample. In some embodiments, the films can be used as a template or mask to etch openings in an underlying material layer. Provided is a brake fluid composition having improved capabilities for inhibiting thermal oxidation, metallic and high-temperature corrosion.