Abstract: The invention relates to a measuring device for absorption-spectroscopic gas measurement, the use of spinel, polycrystalline aluminum oxide or aluminum oxynitride and a method for absorption-spectroscopic gas measurement.

Abstract: A method for checking a steam turbine, wherein a first operating variable and a second operating variable are determined, wherein a correlation between the first and second operating variable prevails, and a confidence band having an upper maximum value and a lower minimum value is created, wherein a notification is generated as long as the second operating variable is outside the confidence band during operation.

Abstract: A method is provided for carrying out a sound test for detecting and/or analyzing material faults and/or mounting faults of at least one component, in which the component is excited, by striking, to experience vibrations which generate soundwaves, after which the generated soundwaves are detected and conclusions are drawn about material faults and/or mounting faults on the basis of the detected soundwaves, wherein the striking of the component and the detection of the vibrations are carried out using an endoscope device. In addition, embodiments of the present invention relates to an endoscope device which is configured to carry out the method.

Abstract: A method is provided for carrying out a sound test for detecting and/or analyzing material faults and/or mounting faults of at least one component, in which the component is excited, by striking, to experience vibrations which generate soundwaves, after which the generated soundwaves are detected and conclusions are drawn about material faults and/or mounting faults on the basis of the detected soundwaves, wherein the striking of the component and the detection of the vibrations are carried out using an endoscope device. In addition, embodiments of the present invention relates to an endoscope device which is configured to carry out the method.

Abstract: Pattern match indicators are embedded in the pattern design in the selvage edge portion of adjacent flooring sheets. The pattern match indicators are spaced apart with the distance between the adjacent pattern match indicators equal to the repeat length of the pattern design. In one embodiment the pattern mark indicators may appear as small bars approximately ¼? wide and approximately ½? to approximately ?? in length. Prior to cutting off the selvage edge portions, the adjacent flooring sheets are laid with the edge portion of one flooring sheet overlapping the other flooring sheet. The pattern match indictors are located with the pattern match indicators collinear with respect to the across-machine direction and with a gap of predetermined dimension between them.