Abstract: A sound-absorbing article which is one of a lining or a shaped element and which has a sound absorptive effect over a broad frequency range particularly useful in transportation vehicle when positioned proximate a reverberant wall, the article including at least one microperforated sheet absorber which has microperforations defined therein having at least one hole diameter ranging from 0.05 mm to 2 mm, which has at least one interhole distance ranging from 1 mm to 20 mm, and which has a proportion of hole area ranging from 0.2 to 4%, based on surface area of the at least one microperforated sheet absorber; and at least one absorber which is at least one of a foam absorber and a non-woven absorber and which is positioned at a preselected spatial distance from a reverberant wall.

Abstract: Supported, hydrogenating catalyst in powder form containing, as a catalytically active component, a primary precious metal component, a secondary precious metal component and one or more non-precious metal components. It is used for the hydrogenation of nitroaromatics, in particular nitrobenzene and DNT.

Abstract: The invention relates to a method for applying to a carrier a marking serving to measure length, angle cr the like, such as, for example, a magnetic tape (4), by means of which the accuracy of the measurements is improved. In the case of such methods, in one marking step a means for producing a track with markings, for example a writing head (9), is guided over the carrier and, by virtue of the fact that the carrier is acted upon, markings, for example magnetic north and south poles, are applied therein at predetermined positions of the carrier.