Abstract: A divided disk brake arrangement has a braking disk (13) with braking surfaces (11), and a disk holder (12), which is connected in a torsion-proof manner to the braking disk (13) and secured by a screw connection. The disk holder (12) and the braking disk (13) are mounted so that they can move relative to each other in the radial direction to compensate for different thermal expansions. At least one conical surface (18; 21) is provided in the region where the screw connection bears against the braking disk (13).

Abstract: A method for on-board real-time diagnostics of a mobile technical system using an adaptive technique to approximate stationary characteristic curves resulting from a workshop test. This adaptive technique uses observed non-stationary normal driving data to eliminate confounding variables.

Abstract: A vacuum valve comprising a valve body with a valve opening, a valve plate which is movable between an open position in which it lies next to the valve opening and releases the valve opening and a closed position in which the valve opening is covered and a diaphragm plate which is movable between a passive position, in which it lies next to the valve opening and releases the valve opening, and an active position in which it partially covers the valve opening. The vacuum valve has a completely open state in which the valve plate is in its open position and the diaphragm plate is in its passive position, a completely closed state in which the valve plate is in its closed position and is sealed relative to the valve body, and a partially closed state in which the valve plate is in its open position and the diaphragm plate is in its active position, wherein the vacuum valve has a reduced cross section compared to the completely open state.

Abstract: In a method of monitoring a fuel cell unit, at least one pair of measured values, including a measured current value and a measured voltage value (Iactual, Uactual) are determined at the outputs of the fuel cell unit. The measured voltage value (Uactual) is compared with a limit value (PG), which is a function of the measured current value (Iactual) by way of a limit characteristic polarization curve. It is concluded that the condition of the fuel cell unit is faulty when the measured voltage value (Uactual) or a function of the measured voltage value is smaller than or equal to a predefined threshold value.

Abstract: It is explained, inter alia, a method for correcting scanning errors, wherein after the scanning operation (step 202) scanning errors are eliminated dependent on a deviation of the scanning speed from a required scanning speed (step 210).

Abstract: A form with a plurality of layout items for data presentation by a business application is defined by—simultaneously and one a single screen—providing (410) a tree view with tree nodes to represent the layout items, wherein the view visualizes structure information, a processing order, a selected tree node to represent a selected layout item; providing (420) a property view to display properties of the selected layout item; providing (430) a layout view to display items, wherein the selected layout item is highlighted; modifying (440) the selected layout item and the processing order through interaction with a user; and creating (450) a form definition document. The compatibility of layout items and processing order with a predefined data interface of the business application is verified as well.

Abstract: A sieve insert for a cylinder sieve machine, and especially for a tumbling sieve machine. A sieve insert is provided with the features of a level sieve onto which the material to be sieved is charged, a rebound bottom substantially parallel and arranged at an interval to the sieve and carries a plurality of rebound bodies, a sieve frame for carrying the sieve, and a carrier frame carrying the rebound bottom and the sieve frame. The sieve insert is subdivided into a series of sieve segments, in which sieve frame supports the sieve segments along their contours.

Abstract: An independent suspension system for vehicles including wheel uprights which move in different directions relative to the chassis when negotiating curves. The system automatically adjusts the wheel camber based on the forces effective on the vehicle when negotiating curves. The relative movement with respect to the chassis of the parts of the wheel suspension having mutually different movements when negotiating curves is registered, and the wheel camber angle and/or the steering angle of the wheels is controlled with the aid of actuators.

Abstract: A wheel assembly includes a wheel hub mounted to a wheel mount. The hub and mount include intermeshing profiles in the form of teeth for transmitting torque from the mount to the hub about a longitudinal axis. The teeth on each of the hub and mount project in an axial direction and are circumferentially spaced apart. The teeth are wedge-shaped, as viewed in longitudinal section, to radially center the hub about the longitudinal axis.

Abstract: A process for the preparation of isomer-free 2,5-dichloropyridine comprising alkoxylating 2-chloro-pyridine or 2-bromo-pyridine in the presence of a base at elevated temperatures, chlorinating with gaseous chlorine the alkoxylated product at ambient temperatures in an aqueous suspension in the presence of an auxiliary base, a small amount of a catalyst and optionally a small amount of an emulsifier, treating the isomer reaction mixture with a Vielsmeyer-Haack reagent, subjecting 2,5- and 2,3-dichloropyridine mixture to water vapor distillation and crystallizing the crystalline product from an alcohol-water mixture.

Abstract: In the production of 9,9-bis-(4-hydroxphenyl)-fluorene by condensation by fluorenone and phenol in a molar ratio of 1:4 to 1:8 at 30.degree. to 90.degree. C. in the presence of gaseous hydrogen chloride and .beta.-mercapto-propionic acid as catalyst, the improvement comprising mixing the completed reaction mixture with a polyalkylene glycol, distilling excess phenol from the mixture, and mixing the distillation residue with a solvent miscible with the polyalkylene glycol, recovering the crystallized product, suspending the crystallized product in water and heating the suspension to obtain highly pure 9,9-bis-(4-hydroxyphenyl)-fluorene as white crystals.

Abstract: In a process for the preparation of 9,9-bis-(4-hydroxyphenyl)-fluorene by condensing fluorenone and phenol in a molar ratio of 1:4 to 1:8 at 30.degree. to 90.degree. C. in the presence of gaseous hydrogen chloride and .beta.-mercapto-propionic acid catalyst, the improvement comprising distilling water of reaction and dissolved hydrochloric acid from the completed reaction mixture, dissolving the distillation residue in a nitrile, separating the crystallized adduct of nitrile and 9,9-bis-(4-hydroxphenyl)- fluorene from the nitrile and optionally dissociating the adduct to recover high purity 9,9-bis-(4-hydroxphenyl)- fluorene.

Abstract: A method for the production of heavy metal-free pyridine -3-sulfonic acid by oxidation of 3-chloro-pyridine to 3-chloro-pyridine-N-oxide, substitution of the chlorine through a sulfonic acid group, and subsequent reduction to pyridine-3-sulfonic acid. The method can be carried out using raw 3-chloropyridine-N-oxide and direct further reaction of the pyridine-3-sulfonic acid-N-oxide in the presence of Raney nickel in an alkaline solution.

Abstract: A process for the recovery of isomeric pure 7-chloro-quinaldine from isomeric mixtures of chloro-quinaldines comprising dissolving the isomeric mixture of chloro-quinaldines in an organic solvent, adding an aqueous tartaric acid solution to the organic solution to form the tartrate of 7-chloro-quinaldine in crystalline form, recovering the crystals and treating the same with a base to obtain 7-chloro-quinaldine.

Abstract: A process for the production of 2-hydroxypyridine from 2-chloro-pyridine which is reacted with an aqueous alkaline solution in the presence of a tertiary alcohol.

Abstract: A process for the preparation of quinuclidine-3-methanol comprising reacting quinuclidine-3-one acid addition salt with an alkali metal cyanide in an aqueous media to obtain 3-cyano-3-hydroxy-quinuclidine, reacting the latter with anhydrous methanol in the presence of hydrogen chloride gas followed by treatment with aqueous alkali to obtain methyl 3-hydroxy-quinuclidine-3-carboxylate, reacting the latter with thionyl chloride to form methyl 1-azabicyclo(2,2,2)oct-2-ene-3-carboxylate, hydrogenating the latter with Raney nickel to obtain methyl 1-azabicyclo(2,2,2)octane-3-carboxylate and reducing the latter to obtain quinuclidine-3-methanol which is an intermediate for mequitazine which is useful as an antihistaminic.

Abstract: Hair dye compositions based on oxidation hair dyes which contain developer components, coupling components and oxidation components, characterized in that they contain one or more aminopyrrole derivatives of the formula: ##STR1##

Abstract: Improvement of the yield and purity of phenanthrenequinone during its production by oxidation of phenanthrene by means of chromic acid in a sulfuric acidic medium is achieved by preparing a dispersion made up of phenanthrene, alkali dichromate and water at 95.degree.-100.degree. C., cooling said dispersion down to 80.degree.-85.degree. C. and carrying out the oxidation reaction under cooling and portion-wise addition of concentrated sulfuric acid in a temperature range between 80.degree. and 85.degree. C.

Abstract: A rotary tube reactor, having at least one treatment line composed of tubes whose individual sections have gas chambers which are sealed from each other and wherein each section has a gas outlet and adjacent sections are joined together by material passages, is used for thermal treatment. In accordance with the invention, the reactor is used for the thermal treatment of carbon containing materials, the production of activated carbon, the activation of zeolite granules, the production of pyrophorous metals in the form of powder to lumpy solid materials and substances in liquid form with the evolution of gas.

Abstract: Recovery of hydrofluoric acid from aqueous fluosilicic acid by treating said aqueous fluosilicic acid at a temperature of from 100.degree. to 300.degree.C. and under a pressure of from 3 to 80 atmospheres and separating resulting hydrogen fluoride containing aqueous phase and silicon tetrafluoride containing gaseous phase and optionally hydrolyzing the silicon tetrafluoride containing gaseous phase in aqueous medium and recycling the aqueous fluosilicic acid to the process as starting material.