Abstract: The present invention relates to a membrane electrode unit comprising a polymer membrane doped with a mineral acid as well as two electrodes, characterized in that the polymer membrane comprises at least one polymer with at least one nitrogen atom and at least one electrode comprises a catalyst which is formed from at least one precious metal and at least one metal less precious according to the electrochemical series.

Abstract: The present invention relates to a membrane electrode unit comprising a polymer membrane doped with a mineral acid as well as two electrodes, characterized in that the polymer membrane comprises at least one polymer with at least one nitrogen atom and at least one electrode comprises a catalyst which is formed from at least one precious metal and at least one metal less precious according to the electrochemical series.

Abstract: An inductive device comprises a plate-shaped ferrite core and a hybrid double-D solenoid coil which is arranged over the plate-shaped ferrite core and has a plurality of turns. The plurality of turns is grouped into at least two groups, each having at least two immediately consecutive turns which in a group have monotonically increasing or decreasing turn diameters, wherein the last turn of a group has a turn diameter that is larger than that of the first turn of the following group if the turn diameter of the turn immediately preceding the last turn within the group is smaller than the turn diameter of the last turn, or has a turn diameter that is smaller than that of the first turn of the following group if the turn diameter of the turn immediately preceding the last turn is larger than the turn diameter of the last turn.

Abstract: A compostable material and methods of forming the same are described. The compostable material includes about 90% to about 99% by weight of a compostable polymeric material and a nucleating agent. The compostable material has a degree of crystallinity of about 5% to about 45%.

Abstract: An inductive device comprises a plate-shaped ferrite core and a hybrid double-D solenoid coil which is arranged over the plate-shaped ferrite core and has a plurality of turns. The plurality of turns is grouped into at least two groups, each having at least two immediately consecutive turns which in a group have monotonically increasing or decreasing turn diameters, wherein the last turn of a group has a turn diameter that is larger than that of the first turn of the following group if the turn diameter of the turn immediately preceding the last turn within the group is smaller than the turn diameter of the last turn, or has a turn diameter that is smaller than that of the first turn of the following group if the turn diameter of the turn immediately preceding the last turn is larger than the turn diameter of the last turn.

Abstract: An exhaust-gas turbocharger (1) having a compressor (2) which has a compressor housing (3); having a turbine (4) which has a turbine housing (5); and having a charge-pressure regulating device (6). The charge-pressure regulating device (6) has at least two flap arrangements (7, 8) and two bypass duct openings (9, 10) assigned to the flap arrangements (7, 8).

Abstract: An exhaust-gas turbocharger (1) having a compressor (2) which has a compressor housing (3); having a turbine (4) which has a turbine housing (5); and having a charge-pressure regulating device (6). The charge-pressure regulating device (6) has at least two flap arrangements (7, 8) and two bypass duct openings (9, 10) assigned to the flap arrangements (7, 8).

Abstract: The present invention relates to a method for the conditioning of membrane electrode assemblies for fuel cells in which the output of the membrane electrode assemblies used can be increased and therefore the efficiency of the resulting polymer electrolyte membrane fuel cells can be improved.

Abstract: The present invention relates to a method for the conditioning of membrane electrode assemblies for fuel cells in which the output of the membrane electrode assemblies used can be increased and therefore the efficiency of the resulting polymer electrolyte membrane fuel cells can be improved.

Abstract: A loudspeaker comprises a voice coil and a diaphragm attached to the voice coil. The diaphragm has a generally rectangular outer shape, and comprises an outer rim (A1) having an outer edge at which the diaphragm is fixed in position and an inner section (A0) within the outer rim. The inner section (A0) comprises: an outermost area (A00) which is coupled to the voice coil and having the same generally rectangular outer shape; and an inner area (A01) comprising a periodic rib structure (A01p), with the ribs running parallel to the shorter side of the rectangular outer shape, and two lateral transition areas (A01c) between the edges of the periodic rib structure (A01p) and the shorter side edges of outermost area (A00).

Abstract: A turbocharger includes a plurality of blades (7; 7?) which are arranged in a turbine casing (2). Each blade has the following: a profile underside (8; 8?) and a profile top side (9; 9?) which determine the blade thickness, a blade leading edge (10; 10?) at a first intersection of the blade underside (8; 8?) and the blade top side (9; 9?), a blade trailing edge (11; 11?) at a second intersection of the blade underside (8; 8?) and the blade top side (9; 9?), a profile center line (12; 12?) which is defined by the blade underside (8; 8?) and the blade top side (9; 9?) and runs between them from the blade leading edge (10; 11?) to the blade trailing edge (11; 11?), and in which the profile center line (12; 12?) runs in a wave-like manner.

Abstract: A loudspeaker comprises a voice coil and a diaphragm attached to the voice coil. The diaphragm has a generally rectangular outer shape, and comprises an outer rim (A1) having an outer edge at which the diaphragm is fixed in position and an inner section (A0) within the outer rim. The inner section (A0) comprises: an outermost area (A00) which is coupled to the voice coil and having the same generally rectangular outer shape; and an inner area (A01) comprising a periodic rib structure (A01p), with the ribs running parallel to the shorter side of the rectangular outer shape, and two lateral transition areas (A01c) between the edges of the periodic rib structure (A01p) and the shorter side edges of outermost area (A00).

Abstract: A method for producing a proton-conducting, polyazole-containing membrane, in which A) a composition containing polyphosphoric acid and at least one polyazole and exhibiting a solution viscosity in the range from 10 Pa·s to 1000 Pa·s, measured to DIN 53018 at the temperature at the orifice during production of the membrane, is pressed through an orifice at a temperature in the range from 25° C. to 300° C., and B) the composition is then solidified.

Abstract: The invention relates to a method for producing an insert leaf for a book-like document, in particular to a method for producing a data page for an identification document. In order to achieve a straightforward method for producing an insert leaf (11), it is proposed for at least one hinge film (17, 18) to be provided, right from the start, as a constituent part of an insert-leaf blank (19) and for that part (22) of the insert-leaf body which is not required to be separated off, in order to produce the hinge region (12).

Abstract: A method for producing a proton-conducting, polyazole-containing membrane, in which A) a composition containing polyphosphoric acid and at least one polyazole and exhibiting a solution viscosity in the range from 10 Pa·s to 1000 Pa·s, measured to DIN 53018 at the temperature at the orifice during production of the membrane, is pressed through an orifice at a temperature in the range from 25° C. to 300° C., and B) the composition is then solidified.

Abstract: A variable geometry turbocharger is provided. The turbocharger improves efficiency by controlling flow to the rotor (230) via movable vanes (260). The vanes (260) can be rotated using a pin (380, 480) and groove (385, 485) system. The vanes (260) can be multiple structures (710, 730) that are movable with respect to each other to increase the length of each of the vanes (260). The turbocharger also improves efficiency by creating a better seal in the area between the vanes (260) and the adjustment ring (240). The seal can be provided by biasing the adjustment ring (240) towards each of the vanes (260). The seal can be provided by expanding each of the vanes (260). The seal can be provided by having a movable portion (1150) of the adjustment ring (240) that is actuated by a pressure source or the like and axially moves towards the vanes (260). The plurality of vanes (260) can be low solidity vanes.

Abstract: The present invention relates to a proton-conducting polymer membrane which comprises polyazoles and is coated with a catalyst layer and is obtainable by a process comprising the steps A) preparation of a mixture comprising polyphosphoric acid, at least one polyazole (polymer A) and/or one or more compounds which are suitable for forming polyazoles under the action of heat according to step B), B) heating of the mixture obtainable according to step A) under inert gas to temperatures of up to 400° C., C) application of a layer using the mixture obtained according to step A) and/or B) to a support, D) treatment of the membrane formed in step C) until it is self-supporting, E) application of at least one catalyst-containing coating to the membrane formed in step C) and/or in step D).

Abstract: A membrane electrode assembly, comprising at least two electrochemically active electrodes which are separated by at least on polymer electrolyte membrane, wherein the polymer electrolyte membrane has reinforcing elements which penetrate the polymer electrolyte membrane at least partially. The membrane electrode assembly is preferably obtained by a method in which (i) a polymer electrolyte membrane is formed in the presence of the reinforcing elements, (ii) the membrane and the electrodes are assembled in the desired order. The membrane electrode assembly is particularly suited for applications in fuel cells.

Abstract: The invention relates to a turbocharger comprising a turbine casing (2) which has an exhaust-gas inlet opening (3) and an exhaust-gas outlet opening (4); comprising a turbine wheel (5) which is fastened to a shaft (6) and is arranged in the turbine casing (2); comprising a plurality of blades (7; T) which are arranged in the turbine casing (2) between the exhaust-gas inlet opening (3) and the turbine wheel (5), wherein each blade has the following: a profile underside (8; 8?) and a profile top side (9; 9?) which determine the blade thickness, a blade leading edge (10; 10?) at a first intersection of the blade underside (8; 8?) and the blade top side (9; 9?), a blade trailing edge (11; 11?) at a second intersection of the blade underside (8; 8?) and the blade top side (9; 9?), a profile centre line (12; 12?) which is defined by the blade underside (8; 8?) and the blade top side (9; 9?) and runs between them from the blade leading edge (10; 11?) to the blade trailing edge (11; 11?), wherein the profile centre l

Abstract: The present invention relates to a proton-conducting polymer membrane coated with a catalyst layer, said polymer membrane comprising polymers which comprise phosphonic acid groups and are obtainable by polymerizing monomers comprising phosphonic acid groups, characterized in that the catalyst layer comprises ionomers which comprise phosphonic acid groups and are obtainable by polymerizing monomers comprising phosphonic acid groups.