摘要:
An application apparatus is configured for application of a coating agent onto a component part, for example, for application of a sealing agent onto a body component. The application apparatus may include an elongated part, that is rotatable about its longitudinal axis and has a nozzle head with at least one nozzle to discharge the coating agent, and one valve unit to control the supply of the coating agent to the at least one nozzle. In a disclosed embodiment, the valve unit is formed outside the nozzle head and arranged at least in sections along the elongated part in a direction of the nozzle head.
摘要:
The invention relates to a method of producing color pastes, in which a component comprising colorant particles is dispersed in a binder. In the method of the invention the dispersing operation is controlled by beaming excitational light of a defined wavelength range into a mixture of the component comprising colorant particles and the binder, detecting the light transmitted, reflected and/or scattered by the mixture and determining a sample spectrum, evaluating the sample spectrum and hence determining parameters of the color paste, and monitoring changes in the sample spectrum over time and terminating the dispersing operation when predetermined target parameters are attained.
摘要:
The invention relates to a container 20, 30 for receiving an aqueous solution, which is formed at least partially by an outer limit 21 forming an inner chamber 22, 32 for receiving the solution, and which comprises at least one area which acts as an electrode 25, 26, 33, 34 when an electric voltage is applied and a subsequent discharge occurs, wherein at least one electrode 25, 26, 33, 34 is made of a conductive synthetic material at least based on a plastic material which is doped with at least one conductive substance. A container 20, 30 of the above-mentioned kind is created this way, which is simple and economical to produce and also, for example, enables an efficient transfection of living cells by means of electroporation or an effective electrofusion.
摘要:
In a winding machine, the space defined by the support cylinders and the winding rolls is sealed and an overpressure is created in this space to relieve the force with which the winding rolls press against the support cylinders. For the purpose, in the area of the two lateral ends of the support cylinders sealing elements are arranged, which for adjustment to various web widths, are axially displaceable and at the same time can be moved away to an area outside the motion range of guide heads and their mounting. In the sealing position of the sealing elements, a fictional-look connection with the support cylinders is avoided.
摘要:
Disclosed is an apparatus for plasma-enhanced processing of substrates, hng a recipient in which ions and reactive neutral particles (radicals) formed in plasma act on the substrate.The present invention is distinguished by having means for varying the plasma volume are provided in order to control the absolute values of the ionic current densities and the radical current densities and in order to control the relative ratio of the ionic current densities and the radical current densities on the surface of the substrate.
摘要:
The present invention relates to an acrylate copolymer containing amino groups, carboxyl groups and, if appropriate, hydroxyl groups which is characterized in that it has been produced by preparing an acrylate copolymer containing amino groups and, if appropriate, carboxyl groups, by means ofA) free-radical solution polymerization, using azo initiators at temperatures from 80.degree. to 150.degree. C., ofa.sub.1) 1 to 20% by weight of vinylimidazole and/or dimethylaminopropylmethacrylamide,a.sub.2) 0 to 50% by weight of one or more monomers containing hydroxyl groups,a.sub.3) 0 to 50% by weight of one or more monomers containing carboxyl groups, anda.sub.4) 30 to 85% by weight of at least one further ethylenically unsaturated copolymerizable monomer,the total of the proportions by weight of the components a.sub.1 to a.sub.4 always being 100% by weight, and the proportions by weight of the components a.sub.2 and a.sub.3 not both simultaneously being zero, andB) if appropriate, reacting the acrylate copolymer obtained in stage (A) with carboxylic acid anhydrides, the quantity of carboxylic acid anhydrides employed having been selected such that the resulting copolymer has the desired acid number.
摘要:
A press-molded collector shoe having a body made of a first carbon piece, and a layer disposed on a side thereof made of a second, less conductive carbon piece. The second piece covers only a portion of the side of the collector shoe. An electrical lead projects from a portion of the side which is not covered by the second piece. During the production of the collector shoe the surface layer is pre-pressed in a separate step and the first carbon piece into which the lead wire is imbedded and the second piece are then pressed together.
摘要:
A spring carbon brush which can be slid into a holder is blocked in the corresponding feed position on the holder when acted on by forces opposed to the direction of feed by a catch or expansion device in such a way that it can only move in the direction opposed to the direction of feed by overcoming an additional, preferably gradual, elastic force.
摘要:
Process for recovering nitrate from surface and ground water, in particular drinking water, by means of biological denitrification, in which the nitrates contained in the water are reduced to gaseous nitrogen in a reactor by means of a biocatalyst having immobilized cells trapped in a gel or polymer. The "micrococcus denitrificans" that is preferably used requires for its metabolism added hydrogen and carbon that is present in the water in the form of dissolved carbon dioxide. Using a biocatalyst of immobilized cells and of the bacterial strain used, expensive after-purification is unnecessary because of increased bacterial count in the pure water outlet, and no undesirable by-products are formed.
摘要:
The invention relates to an apparatus for conducting a molecular gas or gas mixture containing at least one molecular component, in a closed circuit, in particular for the purpose of generating processes in the gas or gas mixture involving its partial ionization and the stimulation of molecules to vibrate in the corresponding gas component. The apparatus comprises two similarly designed flow channels preferably having a rectangular cross-section. The broadsides of the channels are arranged beside each other or constructionally integrated and are connected with each other at their adjacent ends by two apparatus for circulating gas, in such a way that the gas can flow through them in opposite directions. Electrodes are set in partial areas of each channel, electrically insulated from the channel walls, the electrode closer to the other channel in each case being electrically connected, or constructionally identical, to the corresponding electrode of this other channel.