A circuit board includes an insulation layer where a via conductor is embedded. In one embodiment, a key bundle comprising at least one device key is read. The in-line analyzer measures at least one parameter of a sampled slurry sampled from the slurry dispersion system, and generates an indication signal based on the parameter, in which the indication signal indicates at lease one characteristic of the slurry. In addition, a method for reducing emissions from automotive vehicles includes replacing old leaking gas caps with new gas caps that each include a message advertising a product or service or encouraging participation in activities related to automotive emissions reduction. The integrating intensity measurements ensue during a relative movement\u2014thus not during the standstill\u2014of one of the upstream gratings or of the x-ray source fashioned like a grating or of the examination subject, with known speed behavior over a final time interval of a final distance.