Abstract: A method for managing subscription profiles of a security element, which is provided for use in a mobile end device and on which a profile manager and at least one first subscription profile is loaded, includes: loading a second subscription profile from a subscription management server; checking whether the at least one first loaded subscription profile satisfies a predetermined condition; and putting the at least one first subscription profile out of operation when the at least one first subscription profile satisfies the predetermined condition.

Abstract: Methods for manufacturing endodontic instruments are provided. Methods relate to milling a blank with a cutting process to shape the instrument. Instruments so produced are also provided.

Abstract: Disclosed is a piezoelectric resonator, a process for the fabrication thereof and its use as a sensor element, which implemented in a through-flow cell, is integratable in a measurement system for the determination of the concentration of a substance contained in a liquid and/or for the determination of the physical properties of the liquid. The piezoelectric resonator is designed plane and is provided on its surface with electric contact areas for an electrode and a counter electrode, which is connectable to a signal source as well as to a measurement device. For measuring, the piezoelectric resonator is brought into contact with the to-be-examined liquid on one side, with the resonator responding to the accumulation of the mass of the to-be-detected substance or to a change in the physical properties of the liquid by changing its resonance frequency and/or oscillation amplitude.