摘要:
Method for producing a hydrogen storage material that includes a metal hydride and a non-hydrogenated material and that is doped with a metal as a catalyst, includes; mixing a catalyst precursor, which includes the metal, with the non-hydrogenated material so as to provide a first mixture; agitating the first mixture; thermally treating the first mixture so as to form a composite of the non-hydrogenated material and the metal; mixing the composite with the metal hydride so as to provide a second mixture; and grinding the second mixture so as to provide the hydrogen storage material.
摘要:
A tubular collector for precipitating electrically loaded aerosols from a gas stream stands vertically in a gas stream duct. The stream flows upwards in the section. The tubular collector includes at least one group of pipe bundle which extends at the most over the internal width of the duct and including at least one dimensionally stable pipe bundle whose lower side or side that faces the flow rests on a grating or perforated metal sheet connected to an electric reference potential. At least the top side or side away from the stream of a group of pipe bundles is uniformly sprayed with rinsing liquid. The pipes of a group of pipe bundles are held apart by spacers so that the stream flows over their outer and inner sides. The pipes of a group of pipe bundles are identical and have different adjustment heights. The pipes have such a length that at least when a turbulent flow enters one pipe, a laminar gas stream is formed downstream.
摘要:
A ball switch for a multi ball-switch arrangement includes a base plate and a metallic circular disk centrally disposed on the base plate. A first electrically-conductive contact track, which is co-planar with the circular disk, extends from the circular disk to a first edge of the base plate. A chamber plate having a through-bore is disposed opposite the base plate so as to form a chamber which concentrically circumscribes the circular disk. The chamber has a metallic inner wall with a circumferential first metallic annular strip disposed at a first end thereof at a first side of the chamber plate. A dielectric sealing ring which concentrically surrounds the circular disk is disposed between the first metallic annular strip and the base plate so as to seal the chamber. An electrically conductive ball is disposed in the chamber and has a diameter which prevents a further similar conductive ball from fitting into the chamber.
摘要:
An optical element includes a substrate having a passive waveguide and a laser waveguide disposed therein. The laser waveguide is in direct contact with the passive waveguide over a surface of contact so as to provide a butt coupling between the passive waveguide and the laser waveguide. A step extends between an upper edge of the passive waveguide and an upper edge of the laser waveguide. A covering is disposed on the passive waveguide so that the covering and the substrate together provide a cladding of lower refractive index around the passive waveguide and so that a hollow space is disposed between a lower edge of the covering and the upper edge of the laser waveguide.
摘要:
An electrostatic ionization system in a precipitation device for purifying a gas stream passing through it includes: an electrically conductive plate including a plurality of nozzles configured for passage of the gas stream; a sleeve positive-fittingly disposed on each nozzle; a high-voltage grid; a plurality of rod-shaped high-voltage electrodes each having an end connected to the grid and an exposed free end arranged identically centrally in a corresponding one of the nozzles, the electrodes each forming a circumferential gap and arranged at an electrical potential of the grid, wherein the free end of each of the electrodes is exposed downstream after the corresponding nozzle, wherein a wall of each sleeve is permeable to the gas stream and includes at least one of a grid, a perforated sheet and individual rods equidistantly spaced from each other and having free ends terminating in a holding ring.
摘要:
A device for attenuating reflections of an electromagnetic wave impinging thereon and a method of making the device. The device includes a structured film comprised of at least one of a ferromagnetic and ferrimagnetic material. The structured film has a structure and a uniform film portion of the at least one of a ferromagnetic and ferrimagnetic material underneath the structure such that the structured film has at least two different resonance frequencies.
摘要:
A wet electrostatic ionization stage in an electrostatic separation device for purifying a flowing aerosal including finely dispersed particles entrained in a gas. The wet electrostatic ionization stage includes a plate disposed across a cross section of a flow channel and connected to a ground potential or reference counterpotential. The plate includes substantially identical openings through which the gas flows. The wet electrostatic ionization stage also includes a high-voltage grid disposed across the cross section of the flow channel either upstream or downstream from the plate and electrically isolated from a wall of the flow channel. The high voltage grid is coupled to a high voltage potential via a bushing disposed in the wall of the flow channel. For each opening in the plate, a rod-shaped high-voltage electrode coupled at one end to the high-voltage grid has a free end projecting centrically into the one opening. Each electrode includes a disk of electrically conductive material disposed on its free end. The disks are disposed in a substantially identical manner, each parallel to the plate, centrically with its corresponding opening and free from contact with the plate. The disks each include at least two outwardly extending radial tips. A sleeve is disposed in each opening. Each of the sleeves has a substantially identical cross section and an axis disposed substantially perpendicular to the plate. The sleeves are spaced circumferentially at a constant distance L from the radial tips.
摘要:
The invention relates to a fiber optic material which comprises a polymer and at least one organic compound introduced therein. Said organic compound is a condensed aromatic ring system having two or more aromatic rings that are isocyclic or heterocyclic, wherein every heteroatom is associated with exactly one ring if the ring is heterocyclic. The fiber optic material according to the invention is preferably used for the core of an optical waveguide.
摘要:
A method for solution crystallization of mixtures of substances includes: providing a liquid mixture of substances including at least one component substance having an elevated melting point; drawing off a substream from the mixture of substances; feeding the substream to a heat exchanger so that the substream flows through the heat exchanger; cooling the substream in the heat exchanger to a temperature below a crystallization temperature of only the at least one component substance so that crystals from the at least one component substance form in the substream at an outlet of the heat exchanger; blending the substream including the crystals into the mixture of substances so that the crystals in the mixture of substances selectively bind other substances as a result of crystal growth; and providing for sedimentation and precipitation of the crystals in the mixture of substances.
摘要:
A molded body comprises a film with a film thickness D ranging from 1 μm to 1000 μm, with at least one hollow structure configured into the film. Each hollow structure has an outside diameter d equal to at least double value of film thickness D, a height h is equal to or less than double the value of the outside diameter d, a wall thickness b greater than 0.02 times the film thickness D and less than or equal to the film thickness D and a local curvature radius r greater than 0.2 times and less than or equal to 5 times the wall thickness b. The film and the hollow structure include a plurality of pores.