Abstract: The invention relates to a heat exchanger for heating gas to a temperature in the range from 150 to 400° C., wherein the gas is heated by indirect heat transfer and all the surfaces of the walls of the heat exchanger which come into contact with the gas have been hot dip galvanized and the surfaces which come into contact with the gas, after the hot dip galvanization, have been heat treated at a temperature in the range from 400 to 750° C. The invention further relates to the use of the heat exchanger.

Abstract: The invention relates to a heat exchanger for heating gas to a temperature in the range from 150 to 400° C., wherein the gas is heated by indirect heat transfer and all the surfaces of the walls of the heat exchanger which come into contact with the gas have been hot dip galvanized and the surfaces which come into contact with the gas, after the hot dip galvanization, have been heat treated at a temperature in the range from 400 to 750° C. The invention further relates to the use of the heat exchanger.

Abstract: The invention relates to a heat exchanger for heating gas to a temperature in the range from 150 to 400° C., wherein the gas is heated by indirect heat transfer and all the surfaces of the walls of the heat exchanger which come into contact with the gas have been hot dip galvanized and the surfaces which come into contact with the gas, after the hot dip galvanization, have been heat treated at a temperature in the range from 400 to 750° C. The invention further relates to the use of the heat exchanger.

Abstract: A method of recovering metal values from metal-bearing materials such as slags and drosses includes the steps of pulverizing the material to particles less than about 100 ?m; leaching the pulverized material with a solution of ammonium chloride, sodium chloride, and potassium chloride; sequentially recovering at least two metals from the leachate by the addition of zinc using a sequential cementation process; and recovering zinc from the solution by electrowinning.

Abstract: A method of recovering metal values from metal-bearing materials such as slags and drosses includes the steps of pulverizing the material to particles less than about 100 ?m; leaching the pulverized material with a solution of ammonium chloride, sodium chloride, and potassium chloride; sequentially recovering at least two metals from the leachate by the addition of zinc using a sequential cementation process; and recovering zinc from the solution by electrowinning.

Abstract: A method for checking the quality of thermal coupling between a measuring cell and a thermostatted element of an analyzer, where the measuring cell can be exchangeably inserted into an analyzer to measure at least one parameter of a sample, and is provided with at least one sensor element in a measuring channel.

Abstract: A method for checking the quality of thermal coupling between a measuring cell and a thermostatted element of an analyzer, where the measuring cell can be exchangeably inserted into an analyzer to measure at least one parameter of a sample, and is provided with at least one sensor element in a measuring channel.

Abstract: A method is disclosed for processing seismic data. The method includes prestack depth migrating seismic measurements to compute common angle domain image gathers with an initial depth model. Residual moveout analysis is performed in the common angle domain, moveout corrections are derived in terms of the residual radii of curvature at zero reflection angle. Corrections for larger reflection angles are obtained from separate analyses for the coefficients of suitable series expansions. The residual radii of curvature at zero reflection angle can be used to improve the signal to noise ratio of the migrated data and to assess or improve the velocity model used for the prestack depth migration.

Abstract: Devices for thermostatting a measuring cell in an analyzer and measuring cells are disclosed. In one embodiment, a device is provided comprising a measuring cell with a measuring channel, wherein at least one sensor element is located in the measuring channel, and an analyzer comprising a thermostatted supporting surface. The measuring cell can be inserted into the analyzer in an exchangeable manner and can be brought into contact with the thermostatted supporting surface at least in a contact area, the measuring cell having an essentially planar measuring cell wall at least in this contact area.

Abstract: The present invention relates to a medicinal beverage containing water and molecular oxygen physically dissolved therein for the use as a pharmaceutical product, wherein the amount of dissolved oxygen is at least 75 mg/l water and the uses thereof.

Abstract: A pelletizing die for a pelletizer comprises a base body with holes for melt to pass through; the holes are disposed in rows. Allocated to the holes are wearing-protection inserts, having holes which are in alignment with the holes in the base body. The inserts which are disposed to adjoin each other in a row have a chordal surface where they are turned toward an adjoining insert and are provided with at least one surface of an arcuate segment of a cylinder laterally of the chordal surface.

Abstract: A pelletizing die for a pelletizer comprises a base body with holes for melt to pass through; the holes are disposed in rows. Allocated to the holes are wearing-protection inserts, having holes which are in alignment with the holes in the base body. The inserts which are disposed to adjoin each other in a row have a chordal surface where they are turned toward an adjoining insert and are provided with at least one surface of an arcuate segment of a cylinder laterally of the chordal surface.

Abstract: A die plate for the underwater granulation of thermoplastic material is formed with a base plate of an iron alloy, a hard annular cutting plate of titanium-carbide alloy, and an intermediate buffer layer containing nickel between the base plate and the cutting plate to equilibrate heat stresses due to different coefficient of thermal expansion of the base and the cutting plates. The intermediate layer is formed with a thickness of between 0.5 and 2 mm by hot-isostatic pressing a nickel-containing metal powder between the plates such that the intermediate layer is diffusion welded to the plates. Two nickel layers with an intermediate titanium-containing plate can also be formed. Also an ansenitic layer can be formed between the nickel layer and the base plate.

Abstract: A shaped part made of a composite material having shape memory properties is intended to be assembled in such a way that various changes in shape, including complex changes, take place in dependence on the temperature. This is achieved by providing that the shaped part has several sections which have shape memory properties and which are coupled together with one another in such a way that independent results of the shape memory effect cause temperature-specific changes in the shape of the shaped part, in the course of which the shaped part assumes the same number of permanent and/or reversible shapes as the number of sections having shape memory properties.

Abstract: A process for providing abrasion and corrosion resistance in the borehole of a steel body comprising placing an alloying material of solid form within the borehole of the steel body, the alloying material having abrasion and corrosion resistance, and thereafter melting the alloying material in a gas heated protective gas oven to effect diffusion bonding of the alloying material with the steel body and the formation of an abrasion and corrosion resistant lining on the steel body. The borehole is of non-circular shape in cross-section and, particularly, of figure 8 shape as shown in FIG. 2.

Abstract: A contact element is formed wherein at least one layer, containing a noble metal and/or noble metal alloy, is applied to a carrier of base metal by the action of high-energy light radiation. The layer and carrier are fused to each other to form a connecting stratum produced with the aid of radiation of light of the completely fused layer.

Abstract: A spark plug center electrode comprises a core of material having good thermal conductivity surrounded by a sheath of corrosion resisting material. During manufacture of the electrode, the core is joined to the sheath by means of a welded joint which extends only over the zone of the inner basal surface of the sheath part.

Abstract: A metallic material, particularly useful for electrical contacts, comprises a matrix metal, for example silver or copper, with additives embedded therein in powder form. However, while being in powder form the additives are arranged in elongate fiber like lengths preferably parallel fiber like lengths. A method of producing such a distribution is to fill a tube of the matrix metal with the powder and draw it out to wire thickness, bundle a number of such wires together and fuse the outer coverings to form a continuous matrix with embedded fiber like lengths of powder.

Abstract: A spark plug is equipped with a center electrode composed of two different metals, one of which is embedded in wire or fibre form in the other and wherein at least one of the metals possesses the properties of high electrical and thermal conductivity. The electrode is made by the joint plastic shaping of the two metals to produce a solid metallic bond therebetween. The electrode possesses the advantageous properties of good electrical and thermal conductivity, high corrosion resistance at high temperatures, slow burning rate and high mechanical strength.

Abstract: The present pipe elbow includes at least two straight pipe sections joined together along a Y-seam, for example by welding. The Y-configuration of the seam is such, that the three limbs thereof all have the same length, whereby these limbs meet at a point off center relative to the central axis of the pipe. The elbow is formed by making a straight cut at right angles toward the longitudinal axis of the pipe and slightly through said longitudinal axis and by further cutting the straight pipe at acute angles so that second and third cuts meet the first cut at said off center point. These cuts result in wedge segments which fit exactly into the space between the arms of the Y-configuration when the pipe edges are joined along the leg of the Y-configuration. Thus, the present process does not produce any waste whatsoever.