Abstract: The present invention relates to a radioactive electron emitting microchannel plate. More particularly, to a radioactive electron generating microchannel plate comprising (a) a pair of parallel substrates; (b) at least one radioactive material layer deposited on an inner surface of the substrates; and (c) at least one electron ray-amplifying layer deposited on the surface of the radioactive material layer. The emitted electron ray is amplified by penetrating into the cavity formed by a pair of parallel substrates and is further amplified by reflecting from the electron ray-amplifying layer. As the substrate in the microchannel plate, use can be made of a capillary tube or a thin plate. The microchannel plate of the present invention can be applied as an electron ray source in an electron ray-generating device, an image display device, and electron ray-etching device.

Abstract: System for monitoring the working of rotation or roll dampers in rail vehicles provided with a superstructure which rests on at least two chassis, in which the motions which can be generated as a consequence of the self-seeking character of a wheel set are damped in at least one of the chassis by the said rotation or roll dampers which are mounted between chassis and superstructure, on one side each of the chassis. The working of the dampers is monitored by means of suitable sensors, which emit electric signals dependent upon the working of the particular damper. The system is provided with means for comparing the signals of both sensors and for determining a differential signal. The system is further provided with means by which the differential signal is compared with a reference value, which means emit a warning signal if the differential signal exceeds the said reference value.

Abstract: A system for connecting an transducer matrix array to a beamformer via a multiplexer where the multiplexer includes a plurality of numbered switches, the array including a plurality of rows and columns where the rows include plural center rows the elements of which are uniquely associated with a numbered switch portion and a top row associated with first and second numbered switches offset by L in first and second differing directions with respect to one of the center row elements, and a bottom row associated with third and fourth numbered switches offset by L in first and second differing directions with respect to the one of the center row elements.

Abstract: A compressor has male and female rotors with enmeshed screw-type body portions. A housing cooperates with the rotors to define inlet and outlet chambers for pumping of fluid from/to when the male rotor in a first direction and the female rotor rotates in an opposite direction. The housing cooperates with the rotors to define inlet and outlet ports at the inlet and outlet chambers for each of a male and female compression pocket. The inlet ports and/or outlet ports of the respective male and female compression pockets are positioned to respectively close or open sequentially.

Abstract: A process for the production of multi-layer metal composite tubes (10), wherein a metal strip is shaped to form a tube (16) and butt-welded along its two longitudinal edges. A plastic inner layer (12) is applied by extrusion in firmly adhering manner to the inside (12) of the metal tube (16) and a plastic outer layer (14) is applied by extrusion in firmly adhering manner to the outside (26) of the metal tube (16).

Abstract: A method for in situ forming of an unstable oil in water emulsion includes the steps of providing a mixture of an aqueous alkali salt solution and a surfactant, and pumping the mixture down a well containing a crude hydrocarbon having an API gravity of less than or equal to 26 so as to provide an unstable emulsion in the well, the unstable emulsion having the hydrocarbon as a dispersed phase and the solution as a continuous phase and having a ratio by weight of the hydrocarbon to the solution of at least about 50:50.

Abstract: The invention relates to a device for comminuting a good to be comminuted, in particular in the meat processing industry. The device is provided with cutting assemblies (A, C), each comprising an apertured plate and a rotating cutting head which rotates in front of said plate and which has cutting blades. The cutting assemblies have an adjustable gap between the apertured plate and the cutting blades of the cutting head, respectively. The apertured plates are held against a stop located in a common regulating body. The regulating body is mounted in such a way as to be axially displaceable in relation to the non-displaceable cutting heads, hereby enabling the distance between the apertured plates and the corresponding cutting head to be adjusted simultaneously. At least one other apertured plate is located between the two apertured plates and is supported relative to the adjacent apertured plates by distance rings.

Abstract: The present invention relates to an integrated enviromental control system for an aircraft. The system uses bleed air from a propulsion engine to drive an air turbine which provides power to at least one aircraft component such as an aircraft mounted accessory drive. The system uses the bleed air exiting the air turbine as an air source for the cabin and/or flight deck enviromental control system.

Abstract: The beveled face of the cutting blade presents, in cross-section and going from its cutting edge: a first zone making a first angle with the plane face of the cutting blade; and a second zone making a second angle with the plane face of the cutting blade, the second angle being smaller than the first angle. The second angle has a minimum value in the region of the cutting blade close to the shoulder and a maximum value in a region of the cutting blade close to the tip of the cutting blade.

Abstract: The invention provides a composition for diffusion in the air of an enclosure to be treated to combat the bacteria contained in the air of the enclosure. The composition contains 2-phenylphenol and natural and/or synthetic thymol dissolved in a solvent such as isopropyl alcohol, for example. The invention also provides a method of combating the bacteria in the air of an enclosure to be treated, which method includes a step of diffusing the antibacterial composition into the air of the enclosure. Finally, the invention provides the use of a catalytic combustion flask for implementing such a method.

Abstract: In accordance with the present invention, a method for reducing noise in ultrasound images comprising the steps of transmitting and receiving from an ultrasound transducer comprising a plurality of apexes a plurality of ultrasound beams from a first apex to form a first sector image comprising a plurality of image intensities, transmitting and receiving from at least one other apex of the transducer a plurality of ultrasound beams to form at least one other sector image comprising a plurality of image intensities overlapping a portion of the first sector image to form an overlap region, and combining the first sector image and the at least one other sector image to produce a compound image.

Abstract: The present invention relates to a zirconium alloy having excellent corrosion resistance and mechanical properties and a method for preparing a nuclear fuel cladding tube by zirconium alloy. More particulary, the present invention is directed to a zirconium alloy comprising Zr-aNb-bSn-cFe-dCr-eCu (a=0.05-0.4 wt %, b=0.3-0.7 wt %, c=0.1-0.4 wt %, d=0-0.2 wt % and e=0.01-0.2 wt %, provided that Nb+Sn=0.35-1.0 wt %), and to a method for preparing a zirconium alloy nuclear fuel cladding tube, comprising melting a metal mixture comprising of the zirconium and alloying elements to obtain ingot, forging the ingot at &bgr; phase range, &bgr;-quenching the forged ingot at 1015-1075° C., hot-working the quenched ingot at 600-650° C., cold-working the hot-worked ingot in three to five passes, with intermediate vacuum annealing and final vacuum annealing the worked ingot at 460-540° C.

Abstract: A pump includes an outer body; and a wall within said outer body. The outer body and the wall define a pumping cavity and an excitation cavity within the outer body. An excitable medium is contained within the excitation cavity. An excitation source is coupled to said excitable medium. This excitation source is operable to excite the excitable medium and create a standing wave therein. The standing wave acts through the wall to pump said fluid through said pumping cavity. Advantageously, the excitable medium is isolated from the pumped fluid by the wall.

Abstract: A process for treating liquid hydrocarbon, includes the steps of providing a liquid hydrocarbon containing complex sulfur-containing compounds, providing a bioactive material selected from or derived from members of genus Alcaligenes; and exposing the liquid hydrocarbon to the bioactive material under effective conditions such that the bioactive material interacts with the complex sulfur compounds and transforms the organic sulfur-containing compounds into inorganic sulfur compounds.

Abstract: A method of predicting the cutting speed for machining of titanium alloy comprising the steps of obtaining a first transfer function for a tool system, obtaining a second transfer function for a workpiece system, selecting from the first transfer function a first flexible mode, selecting from the second transfer function a second flexible mode, defining a natural frequency of the first flexible mode and the second flexible mode, calculating a tooth passing frequency using the defined natural frequency, accepting the calculated tooth passing frequency if the calculated tooth passing frequency differs from a second harmonic of a combined system formed of the tool system and the workpiece system and from at least one natural frequency corresponding to the tool system and the workpiece system, calculating a stable spindle speed, defining a cut depth using the calculated spindle speed.

Abstract: A hypergolic fuel system comprises hydrogen peroxide, silane and a liquid fuel. The hypergolic fuel system is employed in a method for producing thrust, for example in a rocket, by contacting hydrogen peroxide with silane to obtain initial ignition and thereafter feeding a liquid fuel for combustion.

Abstract: An arrangement which comprises: first and second panel-shaped pieces of flooring for joining together, said pieces resting on a sub-floor and having profiles along mutually meeting edge portions which, on the first piece, consist of a groove and a projection located thereunder, and on the second piece a tongue insertible in the groove, and also a recess accommodating the projection; wherein said projection, at its outer, free edge, is of greater thickness transversely of the plane of extent of the flooring piece than at its inner edge connected with remaining parts of the piece; and wherein the underside of the projection lies flush with the remainder of the underside of the flooring piece.

Abstract: A method for optimizing colored images emitted by a color printer on the non-white surfaces of substrates and for optimizing the amounts of printing ink used, wherein an image motif is processed by a computer-assisted image processing system in order to form a master copy which is ready for output. The method determines, for each pixel, whether and with what color density, a white underprint can be applied to a corresponding pixel, using an algorithm based on overall color density SF. The surface of the substrate is thus only underprinted with white on the pixels of the master copy where the overall color density is lacking or low.