Abstract: A guide rail for a hand-held power tool includes at least two rail elements, which are to be joined together to form a common rail and which are held on one another by means of a releasable connecting device. The connecting device includes a joint device, by means of which the individual rails can be pivoted between a folded-together non-functioning position and a functioning position that lies in a common plane.

Abstract: Method for the production of phthalic acid anhydride by catalytic gas phase oxidation of o-xylol with oxygen, in which the reaction is carried out in 5 to 60 serially arranged reaction zones under adiabatic conditions, and reactor system for carrying out the method.

Abstract: Data are compiled by simulation before or during a process which a tooth or material can undergo or has undergone, and the data are then used for computing purposes and/or as reference data after an additional measurement data acquisition process in order to achieve one or more of the purposes of the disclosed methods. Data are acquired at the tooth or material by means of an instrument which can sense the spectral composition and/or the radiation path of electromagnetic radiation, in particular light, and/or by means of another conventional and known method for sensing a condition or liquid content.

Abstract: The invention relates to the field of identification and verification of living beings with the aid of the form, shape, contour, silhouette, surface structure, color and characteristics especially of sets of teeth, individual teeth, tooth parts, and the relation thereof to the facial and body structures surrounding the same. Systems that are suitable for recording the person-related characteristics are based on detection by means of laser, a camera, sensor, image, color, etc., for example. Disclosed are a series of possibilities and constructions on how a “dental fingerprint” can be detected so as to generate data. The invention does away with problems inherent to previous systems in this field as a result of the great advantage created by the independence of the teeth from facial expressions. The detection of the surface is to indicate whether a being is alive or dead.