Abstract: The invention relates to a method for inspecting especially a gas turbine installation or steam turbine installation. According to said method, an actual condition of a component of the turbine installation is determined using a suitable system, the determined actual condition is compared with a predetermined desired condition of the component, and the result of comparison between the actual condition and the desired condition is used to determine whether an overall inspection of the turbine installation is required. The component is a guide vane whose angular position in relation to the direction of influx is the actual condition to be determined. The actual condition is determined by means of an imaging device. The invention also relates to a turbine inspection system for carrying out the method.

Abstract: A component, designed so that the longitudinal grain which experiences the greatest stress has a larger grain width than the other grains, is provided. This longitudinal grain is usually on the edge of the component. The component includes longitudinal grains that are directionally solidified in a rod-crystalline form along the longitudinal axis of the component.

Abstract: Components comprising corrosion products are often reused, in which case the corrosion product has to be removed. According to the prior art, this takes a very long time since the reaction times with the corrosion product are often very long. According to the invention, the corrosion product is pretreated in order to produce a larger attackable surface area, so that the corrosion product can be removed more quickly.

Abstract: During a solution heat treatment grain recrystallization may occur of a textured article, especially at the surface rim.

Abstract: In a transmission system with Tomlinson preceding, the data are transmitted with N amplitude levels. In order to be able to resume the data transmission quickly and with little outlay after a temporary interruption, test signals (15-18) with data symbols which have W amplitude levels out of the overall N amplitude levels are transmitted in a warm-start phase for synchronisation or adjustment of a receiver (C), W and N being integers and W being <N. Even though only W amplitude levels are transmitted, the test signals are Tomlinson-precoded using N levels on the transmitter side and decoded using N levels on the receiver side, so that the transient process of the Tomlinson filter (2) is not perturbed when switching over to the N-level data mode and it is not necessary to change the Tomlinson preceding and decoding which depend on the number of data levels. The invention can be used, in particular, for the SDSL standard, although it may be used in all systems with Tomlinson preceding.

Abstract: The present invention relates to a process for preparing 2,4-dichloro-5-hydroxyacetanilide by reacting 3-hydroxyacetanilide with sulfuryl chloride in the presence of from 3 to 30 parts by weight of an aliphatic carboxylic acid having from 1 to 6 carbon atoms per part by weight of 3-hydroxyacetanilide with vigorous mixing at from 20 to 100° , removing gaseous components from the reaction mixture, setting a ratio of from 1.0 to 6 parts by weight of aliphatic carboxylic acid per part by weight of 3-hydroxyacetanilide employed and removing 2,4-dichloro-5-hydroxyacetanilide as a solid.

Abstract: A process for producing 1,2,3,4-tetrahydro-2,4-dioxo-quinazoline-1-yl acetic acid derivatives of the formula (I) in which R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are mutually independently hydrogen, halogen, OH, NO.sub.2, (C.sub.1 -C.sub.6) alkoxy, (C.sub.1 -C.sub.6) alkyl, halogen-substituted (C.sub.1 -C.sub.6) alkyl, R.sup.5 is hydrogen, (C.sub.1 -C.sub.6) alkyl, phenyl where the alkyl or phenyl radical may also be substituted by halogen atoms; in which an anthranilic acid derivative of formula (II), in which R.sup.1 to R.sup.5 have the above meaning and R.sup.6 is hydrogen, (C.sub.1 -C.sub.6) alkyl or phenyl, where the alkyl or phenyl radical may also be substituted by halogen atoms, is reacted with a metal cyanate and hydrogen chloride in the presence of an inert solvent.

Abstract: Compounds have the formula (I), ##STR1## in which R stands for straight-chain or branched (C.sub.1 -C.sub.20) alkyl, phenyl or CH.sub.2 phenyl, the alkyl group or phenyl group being optionally substituted by halogen, (C.sub.1 -C.sub.4) alkyl, (C.sub.1 -C.sub.4) alkoxy, and R.sup.1, R.sup.2, R.sup.3, R.sup.4 independently represent hydrogen, halogen, OH, NO.sub.2, (C.sub.1 -C.sub.6) alkoxy, (C.sub.1 -C.sub.6) alkyl or halogen-substituted (C.sub.1 -C.sub.6)-alkyl. Also disclosed is a process for preparing these compounds.

Abstract: The present invention relates to a process for the preparation of 3,5-difluoroaniline by reacting 3,5-difluorochlorobenzene with ammonia in the presence of a solvent in the presence of a copper compound and at least one metal selected from the group consisting of copper, iron, cobalt, nickel, chromium, molybdenum and zinc, at 100 to 250.degree. C.

Abstract: A process for preparing N-carboxymethylene-4-chloroanthranilic acid, and its dialkyl esters. The invention relates to a process for preparing N-carboxymethylene-4-chloroanthranilic acid and its dialkyl esters, which comprises reacting 2,4-dichlorobenzoic acid in the presence of a base, of a solvent and of a catalyst with glycine to give N-carboxymethylene-4-chloroanthranilic acid and, where appropriate, reacting the latter in the presence of a base and of a solvent with a dialkyl sulfate, dialkyl carbonate or alkyl halide to give the dialkyl ester.

Abstract: The present invention relates to a process for the preparation of N-(2-carboxy-5-chloro-phenyl)glycine of the formula (1) ##STR1## which comprises reacting 2,4-dichlorobenzoic acid of the formula (2) ##STR2## with glycine and a base in water at a temperature of 50.degree. to 200.degree. C. in the presence of copper and oxygen at a pH of 7 to 13.

Abstract: Process for the preparation of N-carboxymethyleneanthranilic acid esters of the formula (3) ##STR1## by reacting a compound of the formula (1) ##STR2## in which R' is hydrogen or a straight-chain or branched alkyl radical having 1 to 4 carbon atoms and R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are identical or different and independently of one another are hydrogen, halogen, NO.sub.2, a straight-chain or branched alkyl, alkoxy or halogenated alkyl radical having in each case 1 to 6 carbon atoms, with a glyoxylic acid ester of the formula (2)OHC--COOR (2)in which R is a straight-chain or branched alkyl radical having 1 to 20 carbon atoms, phenyl radical or benzyl radical, which are unsubstituted or mono- or polysubstituted by halogen or an alkyl or alkoxy group having in each case 1 to 4 carbon atoms, in the presence of a solvent at 0.degree. to 200.degree. C.