Abstract: Explained, inter alia, is a method in which a workpiece (52) to be processed is fastened to a work carrier (10) by means of a solid (62). The work carrier (10) is made of a porous material, e.g. of porous ceramic. This processing method permits simple manipulation of the wafer during the processing. In addition, the workpiece (52) can be easily separated from the work carrier (10) using a solvent.

Abstract: A workpiece can be clamped between the jaws of a vise in a defined position easily when it is supported by positioning pins. They are located in a plurality of bores in the jaw and can be projected out of the jaw in operation. The pins comprise a pin body and a stop member. Both elements provide a shape which allows an economical production and easy connection with each other. In normal operation the pins can be projected out of the jaw by fluid pressure and be pushed back manually. A bent pin can be pushed or pulled to the front out of the jaw easily by destroying the stop member in a predetermined way or separating it from the pin body.

Abstract: A clamping device for work piece(s) having at least one clamping surface and coupling elements on the clamping surface. The clamping device comprises a first clamping element having a contact surface and a plurality of form-fit elements and a second clamping element having a contact surface and a plurality of form-fit elements. The plurality of form-fit elements have a shape that complements that of the coupling elements. The distance between the contact surfaces are adjusted by a retaining device which is coupled to surfaces of the clamping elements.

Abstract: A tool-driving device (1), which is particularly provided for machine tools, has an internal drive (9), which serves to drive a tool. Also provided is a control device (36), which detects the movement of the tool-driving device (1) and correspondingly controls its drive (9). The tool-driving device (1) can thus be controlled independently of the other tool-machine controls.

Abstract: A propeller with pivoting blades is provided as a cleaning tool (1) for the work area of metal cutting machines, where the angle of adjustment for the pivoting blades is such that an air jet is generated supporting the propeller blades (15) in folding open. The propeller blade (15) is arranged in a tool changer stacker instead of a common tool or on a tool spindle and serves to automatically clean the work area by a blowing process.

Abstract: The novel process facilitates the production of very thin semiconductor chips with thicknesses down to a few .mu.m. The semiconductor chip is first of all arranged on contact surfaces, with the active side oriented toward the contact surfaces. The chip is then electrically connected to the contact surfaces via contact studs. Silicon is then removed from the exposed rear side of the semiconductor chip during a plasma etching process which has high selectivity with respect to the other materials.

Abstract: A recombinant protein with D-hydantoinase activity which has the amino acid sequence SEQ ID NO 1 is obtainable in large amounts and has an improved temperature stability.

Abstract: Enzyme specific for bilirubin which has a phenol oxidase activity of less than 0.5% and an activity for biliverdin of less than 10%, a broad pH optimum as well as a good thermostability. The enzyme is obtainable from plants such as alfalfa and is suitable for the determination as well as for the degradation of bilirubin in particular in biological liquids.

Abstract: A recombinant protein with D-hydantoinase activity which has the amino acid sequence SEQ ID NO 1 is obtainable in large amounts and has an improved temperature stability.

Abstract: The invention concerns a glucose-6-phosphate dehydrogenase which contains the amino acid sequence shown in SEQ ID NO:1 as well as a DNA coding for it and a process for the isolation of an enzyme according to the present invention.

Abstract: The invention concerns a new NAD.sup.+ -dependent D-malate dehydrogenase (decarboxylating, E.C. 1.1.1.83) from E. coli which consists of two subunits which each have a molecular weight of about 42 kD (SDS gel) and processes for the isolation of this enzyme from E. coli and for its stabilisation. The invention concerns in addition a method for the determination of D-malate with the D-malate dehydrogenase according to the present invention as well as a reagent for determining D-malate.

Abstract: The invention concerns a glucose-6-phosphate dehydrogenase which contains the amino acid sequence shown in SEQ ID NO:1 as well as a DNA coding for it and a process for the isolation of an enzyme according to the present invention.

Abstract: The quality of a product, for example the degree of filling of cigarette papers, is non-destructively tested using reflectivity measurement. Compensation is provided for the effects of stray light in the measuring zone and the signals commensurate with the measurements performed on individual units of the object being tested are compared with the average of signals obtained through measurements performed on a preselected number of units of acceptable quality. The state of operability of the test apparatus may be self-checked during incremental periods between the testing of units.

Abstract: For the determination of glycerol, the latter is incubated with galactose oxidase in an aqueous medium in the presence of oxygen and either the oxygen consumption or the amount of H.sub.2 O.sub.2 or glyceraldehyde that is formed is determined. A reagent suitable for this purpose consists of galactose oxidase and a system for the determination of H.sub.2 O.sub.2 or a system for the determination of glyceraldehyde. It can additionally contain an agent for the saponification of esterified glycerol.

Abstract: For the determination of glycerin by oxidation with oxygen in the presence of glycerinoxidase and measurement of the oxygen consumption or of the H.sub.2 O.sub.2 formation, a glycerinoxidase from Aspergillus spec. DSM 1729 is used. A reagent suitable for this method consists of glycerinoxidase from Aspergillus spec. DSM 1729 and a system for the determination of H.sub.2 O.sub.2 and contains additionally, if desired, an agent for the saponification of esterified glycerin.

Abstract: Storage-stable aqueous cholesterol oxidase compositions comprising cholestrol oxidase, a buffer and from 2 to 3.5 M sodium or potassium chloride as a stabilizing agent, are significantly superior to conventional compositions with respect to storage stability and fungibility.

Abstract: Cholesterol is determined by incubating a sample suspected of containing cholesterol in an aqueous medium with cholesterol oxidase and determining either the oxygen consumption, the hydrogen peroxide formed, or cholestenone, as a measure of the initial cholesterol content; reagent compositions comprising cholesterol oxidase and a system for the determination of H.sub.2 O.sub.2 or for the determination of cholestenone are provided.

Abstract: In a process for the determination of total or bound cholesterol by liberating any bound cholesterol using cholesterol esterase and simultaneously or subsequently determining the liberated cholesterol and any initially free cholesterol with a cholesterol reacting enzyme, the improvement comprising using as the cholesterol reacting enzyme an NAD or NADP-dependent cholesterol dehydrogenase obtained from an anaerobic microorganism, e.g., Eubacterium sp. ATCC 21408, or from mammalian tissue, e.g., liver.

Abstract: In a process for the determination of substrates or enzyme activities in a test batch, utilizing a conventional redox reaction as a measurement reaction, the improvement comprising carrying out the process in the presence of ascorbate oxidase; the addition of ascorbate oxidase substantially eliminates the interfering effect of ascorbic acid frequently found in the test sample.

Abstract: Cholesterol oxidase free of unstabilizing residual traces of detergent is activated by adding to the cholesterol oxidase, before use thereof, at least one surface-active compound with lipophilic and hydrophilic properties. Diagnostic agents for determining cholesterol comprising cholesterol oxidase, a hydrogen peroxide detection system, a buffer, and at least one surface-active compound having lipophilic and hydrophilic properties are provided.