Abstract: A catalytically active material is provided. The material includes a mixed oxide having a first metal selected from group 4 of the periodic table of elements and/or a second metal, and at least one further metal selected from group 11 of the periodic table of elements, wherein the macroscopic composition of the material given by the chemical formula corresponds to the composition of the material at a molecular level. A coating made of such a material is also provide, as is an article having such a coating, and a method for producing such a material.

Abstract: A catalytically active material is provided. The material includes a mixed oxide having a first metal selected from group 4 of the periodic table of elements and/or a second metal, and at least one further metal selected from group 11 of the periodic table of elements, wherein the macroscopic composition of the material given by the chemical formula corresponds to the composition of the material at a molecular level. A coating made of such a material is also provide, as is an article having such a coating, and a method for producing such a material.

Abstract: A fast method of determining the position of an electron beam in a shadow mask display tube and has particular application to measuring the convergence of electron beams in color display tubes. A camera is positioned against a color display tube faceplate, the objective lens of the camera covering 10 to 12 triplets of phosphor elements on the screen. The electron beams are modulated with a video signal having a spatial frequency which is slightly different from either the spatial frequency of the color selection electrode or, preferably, half the spatial frequency of the color selection electrode, and the luminance values of the microspots of each color are sampled at the phosphor pitch. Measuring the geometrical positions of the respective beat waveforms of the three colors provides an indication of the misconvergence of the electron beams at the screen.

Abstract: An image enhancement circuit for eliminating noise from a series of image signals g.sub.i (t) representing images of a quasi-stationary object in a noisy environment. The image enhancement circuit is provided with an accumulator circuit and a weighting circuit. The weighting circuit receives a difference signal indicating the difference between the actual image signal g.sub.i (n) and the output signal h.sub.i (n) of the accumulator circuit. In the weighting circuit, the difference signal is multiplied by a weighting factor k(i) which is dependent on the ordinal number i of the actual image signal g.sub.i (n). For example, k(i)=1/i. The weighted difference signal is then added to the accumulator.