Abstract: The present invention is concerned with a tracking device (10) including: a sensor system (12) configured to determine at least one movement parameter of the tracking device and output movement parameter data; a power supply (34) arranged to supply electrical power to the tracking device; a memory (30); and a processor system (24) including: a data processor (26) configured, in accordance with one or more operational parameters stored in the memory, to: control the determination of said at least one movement parameter by the sensor system; and process the movement parameter data and output one or more derived parameters; and a second data processor (26) configured to: operate independently from the data processor; and manage access to the memory and storage therein of: the one or more operational parameters; a log of said movement parameter data output from the sensor system; and said derived parameters.

Abstract: A ball-striking sole for a table tennis paddle comprises a flexible coating (118) of elastic material, one face (135) of which is lined with elastically deformable pimples (120) which protrude from said face. The cross section of said pimples is greater in their region (122) of attachment to this coating than in the region close to their opposite end (124) and the side wall (125) of these pimples has a concave curved profile over at least a part of the height of the pimple between these two regions. This sole is used particularly successfully in a table tennis paddle in which the face of said sole (112) lined with pimples (120) is directed towards the inner side of the blade (115) of the paddle such that the free ends (124) of the pimples, the lateral surface of which has a concave curved profile (125), are pressed against a layer (126) of elastic material, secured to the blade, the modulus of elasticity of which is much lower than that of the elastic coating (118) of the sole.

Abstract: A ball-striking sole for a table tennis paddle comprises a flexible coating (118) of elastic material, one face (135) of which is lined with elastically deformable pimples (120) which protrude from said face. The cross section of said pimples is greater in their region (122) of attachment to this coating than in the region close to their opposite end (124) and the side wall (125) of these pimples has a concave curved profile over at least a part of the height of the pimple between these two regions. This sole is used particularly successfully in a table tennis paddle in which the face of said sole (112) lined with pimples (120) is directed towards the inner side of the blade (115) of the paddle such that the free ends (124) of the pimples, the lateral surface of which has a concave curved profile (125), are pressed against a layer (126) of elastic material, secured to the blade, the modulus of elasticity of which is much lower than that of the elastic coating (118) of the sole.

Abstract: A process for manufacturing semiconductor devices including a plurality of semiconductor layers arranged over a substrate, the semiconductor layers including at least one active layer. The process comprises the steps of vertically etching the plurality of semiconductor layers, the vertical etching including reactive ion etching of the semiconductor layers, and a subsequent regrowth of the laser structure in a regrowth reactor. The process includes the step of in-situ etching the laser structure in the regrowth reactor after the reactive ion-etching step. The process is effective in obtaining smooth planar and lateral surfaces for the regrowth step.

Abstract: The vapour generator for chemical vapour deposition plants allows the extraction of metalorganic vapours from liquid or solid sources. It mainly consists of a container into which a gas flows in, and as it passes near the reagent, it is saturated with the vapours produced and transports them to the reaction chamber. Only the generator is brought to a temperature which is higher than room temperature so as to obtain a vapour which is saturated with a high quantity of reagent. To avoid vapour condensation in the pipe system transporting it from the generator to the reaction chamber, it is diluted with a carrier gas directly in the body of the heated generator, reducing in this way the condensation temperature of vapour which becomes unsaturated. For this purpose, the generator contains a dilution bypass-line in the upper base into which the carrier gas is made to flow. The pipe system going from the generator to the reaction chamber can be held at room temperature without any condensation risks.

Abstract: The device for introducing reagents into an organometallic vapor phase deposition apparatus consists of a valve body having two chambers, each of which can be placed in communication with a passage for the introduction of the reagent and is permanently connected with two passages traversed by carrier gas.