CAPACITORES SINTONIZABLES USANDO FLUIDOS DIELECTRICOS.

    公开(公告)号:MXPA04003379A

    公开(公告)日:2004-06-18

    申请号:MXPA04003379

    申请日:2002-10-18

    Inventor: MARK G ALLEN

    Abstract: Se describen capacitores (10, 20, 40, 50, 70, 80) que tienen un material dielectrico fluido que es transportado o que sufre un cambio de fase. El cambio del medio dielectrico da como resultado un cambio en la constante dielectrica total del material entre los electrodos (12, 14, 72, 74, 81, 82), cambiando asi la capacitancia de los capacitores. El transporte o el cambio de fase de los fluidos dielectricos hacia dentro o hacia fuera de un campo electrico del capacitor, cambia la constante dielectrica efectiva y la capacitancia del capacitor.

    LIQUID ATOMIZATION METHODS AND DEVICES

    公开(公告)号:IL148743D0

    公开(公告)日:2002-09-12

    申请号:IL14874300

    申请日:2000-09-21

    Abstract: The present invention involves controlled atomization of liquids for various applications such as part/droplet seeding for laser-based measurements of flow velocity, temperature, and concentration; flame and a plasma based elemental analysis; nano-powder production; spray drying for generation of small-sized particles; nebulizers in the production of sub-micron size droplets and for atomizing fuel for use in combustion chambers. In these and other atomizer applications the control of droplet and/or particle size is very critical In some applications extremely small droplets are preferred (less than a micron), while in others, droplet diameters on the scale of several microns are required. The present invention has the flexibility of forming droplets within a particular range of diameters, wherein not only the size of the average droplet can be adjusted, but the range of sizes may be adjusted as well. The atomizer (4) itself is in the form of a heated tube (44) having an inlet end (48) and an outlet end (50). As liquid travels through the tube it is heated and upon exiting the tube and entering a reduced pressure area the liquid atomizes to form very fine droplets. By electrically heating the tube by passing a current therethrough, the heating adjustment can be performed on-the-fly allowing size adjustment during operation of the atomizer. Several different embodiments of the atomization device are disclosed.

    MATERIALS AND PROCESSES FOR PROVIDING FUEL CELLS AND ACTIVE MEMBRANES

    公开(公告)号:CA2371428A1

    公开(公告)日:2000-11-30

    申请号:CA2371428

    申请日:2000-05-22

    Abstract: The materials and processes for forming fuel cell electrodes can include substrates of codeposited materials including an electrically conductive material, such as graphite, a polymer film, such as a proton-exchange membrane, and a catalytic material, such as platinum. The material may be applied to a polymer film by combustion chemical vapor deposition (CCVD) to produce a layered membrane, or the polymer may be deposited simultaneously with the catalytic coating to produce a membrane wherein the layers are intermingled. Proton exchange membranes prepared by this method are useful i n the manufacture of fuel cells.

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