An implant includes a tube for permitting fluid flow. The through-holes include through-hole conductors on the inner walls of corresponding penetration holes of a diameter of 200 \u03bcm or less. If one of the terminals is arranged in a bandwidth-critical area, the network agent ascertains the requested bandwidth and sends a resource request to an associated bandwidth broker, which uses a topology function and knowledge of bandwidth used by existing connections to check the availability of the requested bandwidth in the bandwidth-critical area of the communication network. A method for manufacturing a field emission element using carbon nanotubes is also provided. The pressure sensor may be calibrated to detect a desired fill level of the wine barrel. The present invention is an emulsion coagulant comprising magnesium oxide and a silane coupling agent and a cellulose andor magnesium hydroxide, wherein a mass ratio of the magnesium oxide to the silane coupling agent is from 100:0.