Catalyst particles are separated from the wax in a reactor slurry reactor by feeding a portion of the slurry to a dynamic settler. The signature is formed in order to represent a plurality of temporal positions or ranges of a plurality of characteristics of time domain related features within said audio data. One Newton-Raphson iteration is performed as a function of RA and Y, resulting in a truncated approximate value, R. In still another of its aspects, the present invention relates to an adhesive composition comprising said substantially gel-free compound. The differential line pair segment is flagged as having an improper impedance value if the calculated modal characteristic impedance differs from a desired modal characteristic impedance.