Abstract: A coating (12) for a medical implant, particularly for a vascular stent (6). The coating comprises silicon dioxide and has a thickness of between 40 and 150 nm. Also, a method for producing such a coating, a coated medical implant, and a method for producing same.

Abstract: The invention relates to a bioreactor for producing a tissue prosthesis, particularly a heart valve, comprising a reactor chamber for holding a fluid nutrient medium and a prosthesis support, a device for placing the prosthesis support in the area of the reaction chamber, and a drive device for generating a pulsation flow of the nutrient medium inside the reactor chamber. The bioreactor is characterized in that an exciter device is provided for generating a frequency excitation of the nutrient medium and/or of the prosthesis support, said frequency excitation superimposing the pulsation flow of the nutrient medium. The invention also relates to a method for operating a bioreactor.

Abstract: The invention relates to a bioreactor for producing a tissue prosthesis, particularly a heart valve, comprising a reactor chamber for holding a fluid nutrient medium and a prosthesis support, a device for placing the prosthesis support in the area of the reaction chamber, and a drive device for generating a pulsation flow of the nutrient medium inside the reactor chamber. The bioreactor is characterized in that an exciter device is provided for generating a frequency excitation of the nutrient medium and/or of the prosthesis support, said frequency excitation superimposing the pulsation flow of the nutrient medium. The invention also relates to a method for operating a bioreactor.

Abstract: The invention relates to an in-vitro method for the production of a homologous stented tissue-engineered heart valve.

Abstract: A system and method are provided for configuring a tunnel fire detection system including a linear heat sensor. The fire detection system is configured based on a plurality of tunnel parameters describing the tunnel, a plurality of sensor parameters describing the linear heat sensor, and a plurality of partial fire models describing aspects of fire development. The system and method calculates fire development based on the plurality of tunnel parameters, the plurality of sensor parameters, and the plurality of partial fire models. The system and method can set the fire alarm time, the installation point of the sensor cable and the alarm limit values of the detection system such that a potential fire is quickly and reliably detected.

Abstract: A system and method are provided for configuring a tunnel fire detection system including a linear heat sensor. The fire detection system is configured based on a plurality of tunnel parameters describing the tunnel, a plurality of sensor parameters describing the linear heat sensor, and a plurality of partial fire models describing aspects of fire development. The system and method calculates fire development based on the plurality of tunnel parameters, the plurality of sensor parameters, and the plurality of partial fire models. The system and method can set the fire alarm time, the installation point of the sensor cable and the alarm limit values of the detection system such that a potential fire is quickly and reliably detected.

Abstract: In an apparatus for the production of articles from a planar web of thermoplastic material, having heating, hot shaping and punching devices, a web conveying mechanism for stepwisely transporting the web along the substantially planar path through the apparatus includes a plurality of driven stationary conveying units arranged at opposite edges of the web along the path thereof, each conveying unit including a driving wheel and a cooperating free wheeling supporting roller arranged opposite to each other and having their axes of rotation extending substantially parallel to each other and to the plane of the web, the driving wheel having a wedge-like converging circumference with a toothed circumferential edge and connected to a driving mechanism which synchronously drives the driving wheels, and the free wheeling supporting roller having a cylindrical circumference supporting the web in an adjustable position relative to the driving wheel, such that the toothed circumferential edge partly penetrates the web a