Abstract: The invention relates to a plasma spraying apparatus (1) including a plasma torch (2) for heating up a spray powder (3) in a heating zone (4) and a metering unit (5) for metering the spray powder (3), said metering unit (5) for conveying the spray powder (3) into an injection unit (6) by means of a conveyor gas (7) under a pre-determined pressure being connected with a conveyor gas unit (9) via a conveyor gas line (8). The injection unit (6) has an inlet (61) and an outlet (62) designed as a powder injector (62) so that the spray powder (3) can be supplied from the metering unit (5) to the injector unit (6) through the inlet (61) by means of the conveyor gas (7) via an injector line (10) to the injector unit (6).

Abstract: In a method for detecting an offset drift in a resistive Wheatstone measuring bridge, a switch is made between a measuring mode and a testing mode without intervening in the internal structure of the measuring bridge. To this end, in testing mode two sensor resistors which act in the same way and lie in different bridge arms in the measuring mode, are connected in series and a voltage level occurring in the connection of these sensor resistors is compared with a reference voltage. Preferably the sensor resistor which acts in a different way and lies between the two series-connected sensor resistors acting in the same way is bridged. The reference voltage is advantageously formed by resistive division of the voltage applied to the series connection of the sensor resistors. The testing mode may expediently be switched in such a way that the two pairs of sensor resistors respectively acting in the same way are tested in succession.

Abstract: The granular, form-selective zeolite catalyst used as bed in a process of producing lower olefins from a feed mixture of higher olefins must be decoked from time to time. This is effected such that the reactor is rinsed with a nitrogen stream heated to 460 to 500° C. for expelling the hydrocarbons, the reactor is then cooled with a nitrogen stream heated to 420 to <460° C., a nitrogen/air mixture heated to 460 to 500° C. then flows through the reactor until complete decoking, and subsequently the reactor is rinsed with a nitrogen stream heated to 460 to 500° C.

Abstract: The feed hydrocarbon together with steam is passed as vapor through a thermal steam cracking in which it is heated to temperatures in the range from 700 to 1000° C., where a cracking mixture is produced which contains C2- to C6-olefins and C4- to C6-diolefins. From the cracking mixture a first fraction, which contains C2- and C3-olefins, and a second fraction, which contains olefins and diolefins of the range C4 to C6, are separated. The diolefins are at least partly removed from the second fraction, and an intermediate product is produced which consists of C4- to C6-olefins for at least 30 wt-%. A feed mixture containing C4- to C6-olefins and steam is introduced into a reactor with an inlet temperature of 300 to 700° C., which reactor contains a bed of granular, form-selective catalyst, where a product mixture containing C2- to C4-olefins is withdrawn from the bed and C2- and C3-olefins are separated from the product mixture.

Abstract: Methanol vapor is reacted on a first catalyst to obtain a first vapor mixture containing dimethyl ether (DME), and from the first vapor mixture a product mixture containing propylene is produced on a form-selective zeolite catalyst. The form-selective zeolite catalyst is disposed as bed in at least two series-connected shaft reactors. A first partial stream of the DME-containing first vapor mixture is introduced into the first shaft reactor together with steam, from the first shaft reactor a first intermediate product mixture is withdrawn and charged into the second shaft reactor, a second partial stream of the DME-containing first vapor mixture also being supplied to the second shaft reactor. From the last one of the series-connected shaft reactors a product mixture is withdrawn and a fraction rich in propylene is separated, where there are obtained residual substances which are in part gaseous. At least part of the residual substances is recirculated to at least one of the shaft reactors.

Abstract: The invention relates to the use of 1-(aminoalkyl)-3-quinoxaline-2-one derivatives, especially 1-diethylaminoethyl-3-quinoxaline-2-one derivatives of the formula (I), where R 3 is hydroxy, methoxy, ethoxy or hydrogen, or pharmaceutically compatible salts thereof, for the preparation of compounds having an antioxidant action and used for preventing or treating diseases caused by free radicals of the cellular oxygen metabolism, stimulating nerve cell growth, antagonizing glutamate receptors and/or stimulating the growth notably of glutamergic nerve cells.

Abstract: A method of treating cystic fibrosis by generating cystic fibrosis transmembrane conductance regulator (CFTR) function in cells containing mutant CFTR and the therapeutic composition for treatment are described. The method of treatment comprising administering an effective amount of genistein, or genistein analogues and derivatives, to a person afflicted with cystic fibrosis.

Abstract: Methanol is catalytically produced from a synthesis gas containing hydrogen and carbon oxides on copper-containing catalysts at pressures in the range from 20 to 120 bar and temperatures in the range from 130.degree. to 350.degree. C. The synthesis gas is first of all passed through a first synthesis reactor, in which the catalyst is provided in tubes surrounded by water as a coolant which is boiling at an elevated pressure. From the first reactor a first mixture containing gases and methanol vapor is withdrawn and passed through a second synthesis reactor. In the second reactor the catalyst is cooled with synthesis gas.

Abstract: From a synthesis gas which contains hydrogen and carbon oxides, methanol is produced on copper-containing catalysts under pressures in the range from 20 to 20 bars and at temperatures in the range from 200 to 350.degree. C. The synthesis gas is passed through a first synthesis reactor, which consists of a shaft reactor and contains a fixed bed of a copper-containing catalyst. The reaction in the shaft reactor is carried out adiabatically and without a recycling of synthesis gas. Together with recycle gas, the gas mixture which has not been reacted in the first synthesis reactor is passed through a second synthesis reactor, which contains a copper-containing catalyst, which is disposed in tubes and is indirectly cooled through boiling water. 10 to 30% of the carbon oxides of the synthesis gas are reacted in the shaft reactor to form methanol.

Abstract: A printing or copying machine has a photoconductor (10) with associated recording and developing station (EY, EM, EC, EB) for producing single-color or multi-color toner images on the intermediate image-carrier (10). The toner images are transferred electrostatically, in a transfer zone (T) onto a belt-type transfer element (16) and then, in transfer and fusing zones (U1, U2), printed from the underneath from the transfer element onto the recording carriers (24). In order to facilitate the fusing of the transfer image in the transfer and fusing stations (U1, U2), heating units (23, 31) for heating the toner images on the transfer element (16) and/or for heating the recording carrier (24) are provided. Between the first and the second transfer and fusing station (U1, U2), a turning station (W) is arranged. The printing or copying machine can be operated in the simplex and duplex printing mode of operation to produce single-color or multi-color copies.

Abstract: Methanol is catalytically produced from a synthesis gas which contains H.sub.2, CO and CO.sub.2 in a synthesis reactor at temperatures from 220.degree. to 300.degree. C. and under a pressure in the range from 20 to 120 bars. A product mixture which contains methyl formate is withdrawn from the synthesis reactor and is cooled to temperatures in the range from 20.degree. to 60.degree. to provide a condensate which contains methanol, water and methylformate. A gas mixture which contains H.sub.2, CO and CO.sub.2 is formed at the same time. A fraction which comprises 10 to 100% by weight methyl formate is separated from the condensate and is admixed with the synthesis gas which is fed to the synthesis reactor.

Abstract: A method for the manufacture of a total oxidation catalyst in which titanium dioxide is treated with vanadium pentoxide and then washed until the wash liquid is substantially free of vanadium pentoxide. This method produces a catalyst which will totally oxidize an oxidizable organic compound to carbon dioxide.

Abstract: A method for the manufacture of a selective oxidation catalyst by heating titanium dioxide in the presence of water prior to treating the titanium dioxide with vanadium oxytrichloride in vapor form and then heating the treated titanium dioxide. This treatment with water and vanadium oxytrichloride is repeated a number of times until the desired selective oxidation catalyst is obtained.