Abstract: An abrasive tool, including an abrasive carrier (1) having a shaft (2) for connecting the abrasive carrier (1) to a driving device for rotatably driving the abrasive carrier (1) about a longitudinal axis (X) and having a core (3) connected to an axial end (4) of the shaft (2), and an abrasive article (15) having a surface (16) being circumferentially closed about the longitudinal axis (X) and enclosing a cavity (17) extending along the longitudinal axis (X), wherein the core (3) is accommodated at least partially in the cavity (17), and wherein the core (3) includes a material mixture which includes a plastic with a heat-conductive filler, wherein the plastic is foamed, and wherein the filler has a thermal conductivity greater than 35 watts per meter and per Kelvin.

Abstract: An abrasive tool, including an abrasive carrier (1) having a shaft (2) for connecting the abrasive carrier (1) to a driving device for rotatably driving the abrasive carrier (1) about a longitudinal axis (X) and having a core (3) connected to an axial end (4) of the shaft (2), and an abrasive article (15) having a surface (16) being circumferentially closed about the longitudinal axis (X) and enclosing a cavity (17) extending along the longitudinal axis (X), wherein the core (3) is accommodated at least partially in the cavity (17), and wherein the core (3) includes a material mixture which includes a plastic with a heat-conductive filler, wherein the plastic is foamed, and wherein the filler has a thermal conductivity greater than 35 watts per meter and per Kelvin.

Abstract: The invention relates to an abrasive body (6) for a grinding tool with an abrasive layer (8), which has at least one binding agent (12) and abrasive grains (13), characterised in that thermochromic colouring agents are provided in the abrasive layer (8). The invention relates further to a grinding tool (1) with an abrasive body (6) according to the invention and elements (5) for connecting the grinding tool (1) to a driving device for rotatingly driving the abrasive body (6). The invention relates further to a use of the abrasive body (6) according to the invention or of the grinding tool (1) according to the invention for treating human body parts.

Abstract: The invention relates to an abrasive body (6) for a grinding tool with an abrasive layer (8), which has at least one binding agent (12) and abrasive grains (13), characterised in that thermochromic colouring agents are provided in the abrasive layer (8). The invention relates further to a grinding tool (1) with an abrasive body (6) according to the invention and elements (5) for connecting the grinding tool (1) to a driving device for rotatingly driving the abrasive body (6). The invention relates further to a use of the abrasive body (6) according to the invention or of the grinding tool (1) according to the invention for treating human body parts.

Abstract: The invention relates to an abrasive body for a grinding tool with an abrasive layer, which has at least one binding agent and abrasive grains, characterized in that thermochromic coloring agents are provided in the abrasive layer. The grinding tool includes elements for connecting the grinding tool to a driving device for rotatingly driving the abrasive body. The grinding tool is used for treating human body parts.

Abstract: A method for producing a solar crucible includes providing a crucible base body of transparent or opaque fused silica having an inner wall, providing a dispersion containing amorphous SiO2 particles, applying a SiO2-containing slip layer to at least a part of the inner wall by using the dispersion, drying the slip layer to form a SiO2-containing grain layer and thermally densifying the SiO2-containing grain layer to form a diffusion barrier layer. The dispersion contains a dispersion liquid and amorphous SiO2 particles that form a coarse fraction and a fine fraction with SiO2 nanoparticles. The weight percentage of the SiO2 nanoparticles based on the solids content of the dispersion is in the range between 2 and 15% by weight. The SiO2-containing grain layer is thermally densified into the diffusion barrier layer through the heating up of the silicon in the crystal growing process.

Abstract: The invention relates to an abrasive body (6) for a grinding tool with an abrasive layer (8), which has at least one binding agent (12) and abrasive grains (13), characterised in that thermochromic colouring agents are provided in the abrasive layer (8). The invention relates further to a grinding tool (1) with an abrasive body (6) according to the invention and elements (5) for connecting the grinding tool (1) to a driving device for rotatingly driving the abrasive body (6). The invention relates further to a use of the abrasive body (6) according to the invention or of the grinding tool (1) according to the invention for treating human body parts.

Abstract: A method for producing a solar crucible includes providing a crucible base body of transparent or opaque fused silica having an inner wall, providing a dispersion containing amorphous SiO2 particles, applying a SiO2-containing slip layer to at least a part of the inner wall by using the dispersion, drying the slip layer to form a SiO2-containing grain layer and thermally densifying the SiO2-containing grain layer to form a diffusion barrier layer. The dispersion contains a dispersion liquid and amorphous SiO2 particles that form a coarse fraction and a fine fraction with SiO2 nanoparticles. The weight percentage of the SiO2 nanoparticles based on the solids content of the dispersion is in the range between 2 and 15% by weight. The SiO2-containing grain layer is thermally densified into the diffusion barrier layer through the heating up of the silicon in the crystal growing process.

Abstract: Method for producing a silicon ingot, comprising the following steps: providing a container to receive a silicon melt, providing a temperature control device to control the temperature of the silicon melt in the container, arranging raw material in the container comprising silicon and at least one nucleation agent to assist a heterogeneous nucleation in the silicon melt, and control of the temperature in the container for the directed solidification of the silicon melt, the nucleation agent comprising nanoscale particles.

Abstract: Method for producing zirconia-reinforced Al2O3 grains, including at least the following steps: inductively melting a starting mixture to form a eutectic melt made of alumina and zirconia; applying the eutectic melt as a thin layer material, the thin layer material being quenched; and removing the thin layer material. In this manner abrasive grains can be formed directly or the thin layer material can be classified when it is broken into abrasive grains, the grains are polycrystalline without amorphous glass phases as an alumina matrix having zirconia precipitations, and at least some of the zirconia precipitations can be formed in the nanoscale range.

Abstract: A solar cell includes a first dielectric layer on the shaded side of the solar cell; and a second dielectric layer on the first dielectric layer. The second dielectric layer includes Hydrogen and the Hydrogen content in the second dielectric layer is measured such that a refractive index of less than 2.0 results for the second dielectric layer.

Abstract: Method for producing a silicon ingot comprising the following steps: providing a container to receive a silicon melt, providing a temperature control device to control the temperature of the silicon melt in the container, arranging raw material in the container comprising silicon and at least one hydrogen-containing additive to reduce the formation of dislocations, and control of the temperature in the container (3) for the directed solidification of the silicon melt.

Abstract: Method for producing a silicon ingot, comprising the following steps: providing a container to receive a silicon melt, providing a temperature control device to control the temperature of the silicon melt in the container, arranging raw material in the container comprising silicon and at least one nucleation agent to assist a heterogeneous nucleation in the silicon melt, and control of the temperature in the container for the directed solidification of the silicon melt , the nucleation agent comprising nanoscale particles.

Abstract: The present invention relates to a photovoltaic component comprising a superimposed arrangement of at least one inorganic solar cell and at least one organic solar cell. The inorganic solar cell comprises a translucent backside opposite to the organic solar cell. The present invention further relates to a method of producing a photovoltaic component.

Abstract: The invention relates to a process for the preparation of garnet phosphors or precursors thereof having particles with an average particle size of 50 nm to 20 ?m via a multistep thermal process in a pulsation reactor, and to illumination units comprising the garnet phosphors according to the invention.

Abstract: A neck rest for a seat of an automobile has a neck rest body which includes a neck rest cushion and at least two neck rest rods connected with the neck rest body, the neck rest rods being accommodated in the back rest of the seat. Each of the neck rest rod has a support portion attached thereto. The neck rest body includes a housing which has a front wall and a rear wall, the cushion being attached to an outer side of the front wall and the rear wall, with the support portion being located in the housing between the front and the rear walls. The housing is moveable between a basic position and an extended position.

Abstract: A testing stand for a helicopter transmission is arranged in a testing stand (20) capable of swiveling deflection around a rotor shaft (4) with one output side rotor shaft (4) and at least one drive side input shaft (6, 8). Actuators (28, 30) are provided around the rotor shaft axis (4) for swiveling deflection of the helicopter transmission (2) to equalize shifts on connection couplings (14, 16, 22) occurring under load. It is suggested that the helicopter transmission (2) be clampable in the testing stand (20) by connection elements (24, 26) elastic with respectable to swiveling deflection.

Abstract: A neck rest includes first and second supports having first and second positions where the supports are at approximately the same level and the second support is elevated relative to the first support, respectively. A first spring is supported by the first support and rotatably connected to the second support to bias the second support into the second position. A movable locking element biased by a second spring on the first support automatically blocks the second support in the second position. A locking element is movably supported by the first support and cooperates with a projection of the second support to lock the second support in the first position. A releasing element is movably supported by the first support and releases the locking element when actuated. A supporting member is located between the supports in the second position for transferring shock forces from the second support to the first support.

Abstract: A neck rest for the seat of an automobile, comprising a neck rest body which includes a neck rest cushion and two neck rest rods connected with the neck rest body, the neck rest rods being accommodated in receipts in the back rest of the seat and being adapted to be lifted or lowered, comprising the following elements: a support portion which is fixedly attached to the both neck rest rods, the neck rest body comprising a shroud-like housing which has a front wall, the cushion being attached to the front side of the front wall and a rear wall, with the support portion being located in the housing between front- and rear wall, the shroud-like housing is moveable between a rear basic position wherein the support portion is near or adjacent to the inner side of the front wall and an extended position, wherein the support portion is remote from the front wall, a linkage is linked between the support portion or the neck rest rods respectively and the front wall, a spring arrangement biases the linkage or the housin

Abstract: A neck rest includes first and second supports having first and second positions where the supports are at approximately the same level and the second support is elevated relative to the first support, respectively. A first spring is supported by the first support and rotatably connected to the second support to bias the second support into the second position. A movable locking element biased by a second spring on the first support automatically blocks the second support in the second position. A locking element is movably supported by the first support and cooperates with a projection of the second support to lock the second support in the first position. A releasing element is movably supported by the first support and releases the locking element when actuated. A supporting member is located between the supports in the second position for transferring shock forces from the second support to the first support.