Abstract: An apparatus for generating torque, the apparatus comprising: a rotor hub adapted for applying torque to a shaft; and a plurality of pulse detonation engines adapted for impulsively detonating a plurality of fuel/air mixtures to generate thrust forces and applying the thrust forces to the rotor hub to generate the torque.

Abstract: An apparatus comprising: an airfoil adapted for generating a lift force; and a first pulse detonation actuator disposed inside the airfoil and adapted for impulsively detonating a fuel/air mixture to produce a pressure rise and velocity increase of combustion products therein, the airfoil having a plurality of lift control holes adapted for communicating combustion product flows from the first pulse detonation actuator to an airfoil surface to modulate the lift force.

Abstract: The present invention provides a process for preparing an overbased barium complex and an overbased barium complex prepared thereby. The process includes the steps of: heating a mixture of barium hydroxide monohydrate and an isomeric mixture of from about C10 to about C15 alcohols in the presence of a solvent, thereby producing a first mixture; contacting the first mixture and an isomeric mixture of from about C8 to about C10 branched carboxylic acids, thereby producing a second mixture which includes unreacted barium hydroxide; and contacting the second mixture and carbon dioxide, thereby producing the overbased barium complex. The overbased barium complex of the present invention is useful in the stabilization of halogen-containing polymers.

Abstract: The present invention provides a process for preparing an overbased barium complex and an overbased barium complex prepared thereby. The process includes the steps of: heating a mixture of barium hydroxide monohydrate and an isomeric mixture of from about C10 to about C15 alcohols in the presence of a solvent, thereby producing a first mixture; contacting the first mixture and an isomeric mixture of from about C8 to about C10 branched carboxylic acids, thereby producing a second mixture which includes unreacted barium hydroxide; and contacting the second mixture and carbon dioxide, thereby producing the overbased barium complex. The overbased barium complex of the present invention is useful in the stabilization of halogen-containing polymers.

Abstract: A projection screen apparatus for reproducing the coherence between a visual image and associated acoustic signals. The projection screen apparatus includes a sound broadcasting device and screen that is transparent to sound waves disposed between the sound broadcasting device and the audience, whereby the projection of video and sound broadcasting are simultaneously implemented with respect to the audience. The screen includes multiple layers of white fabric that are superimposed and joined together such that the screen provides a surface that is both transparent to sound and sufficiently opaque to view a projected image.

Abstract: A set of probes for determining HLA-DR types or sub-types includes at least one of the following probes:TGGCAGCTTA AGTTT;CCTAAGAGGG AGTG;GCGAGTGTGG AACCT; andAAGACAGGCG GGC.

Abstract: The present invention relates to a method for cleaning a liquid metal bath, in particular a zinc or zinc-aluminum bath intended for the continuous production of a steel strip coated by immersion in a coating zone (5a), according to which method the metal coating bath (2) is cycled continuously between the coating zone (5a) and a cleaning zone (5b), the rise of solid intermetallic compounds contained in the said bath to the surface is brought about in the cleaning zone (5b), the rise of the said compounds in accelerated and the cleaned bath (2), the iron content of which is close to or below the solubility limit, is led back to the zone (5a).The invention also relates to an apparatus for carrying out the method.

Abstract: The invention relates to monocrystals of silicates of lanthanides usable as scintillators for the detection of X and/or gamma radiation.The lanthanide silicate complies with formula:(Ln.sub.1-x.sbsb.1.sub.-x.sbsb.2.sub.-x.sbsb.3 Ln'.sub.x.sbsb.1 Ce.sub.x.sbsb.2 Tb.sub.x.sbsb.3).sub.9.33 (SiO.sub.4).sub.6 O.sub.2in which Ln and Ln', which differ, represent a rare earth element chosen from among La, Gd, Yb and Lu and x.sub.1, x.sub.2 and x.sub.3 are such that0.ltoreq.x.sub.1 <10.ltoreq.x.sub.2 .ltoreq.0.050.ltoreq.x.sub.3 .ltoreq.0.050<x.sub.2 +x.sub.3 .ltoreq.0.10<x.sub.1 +x.sub.2 +x.sub.

Abstract: The process for optimizing the solidification of zinc on a steel strip (2) under the action of germs of crystallization constituted by zinc in the form of a fine powder, which are projected by a conveying fluid inside a case (1) onto the two sides of the strip (2), is characterized in that the temperature of the strip at the exit of the case (1) is measured and this temperature is maintained at an optimal value by regulating the flow of air blown into the case as a function of the difference between the measurement obtained and the optimal temperature.

Abstract: The invention relates to a process for the treatment of a metal oxide powder, particularly a UO.sub.2 or PuO.sub.2 powder, with a view to its fritting.This process consists of oxidizing the powder, so as to form on its surface a hydrated oxide layer of the same metal. When the oxide is UO.sub.2 or PuO.sub.2 and mixtures thereof, as well as those prepared with ThO.sub.2, the treated powder can be used for producing nuclear fuel pellets by cold compression, followed by fritting.

Abstract: A process for N doping polyacetylene or polyphenylene polymers by contacting the polymer with a doping agent selected from at least one composition selected from organolithium or the alkaline salts of carbanions or dicarbanions having a benzylic structure. The N doped polymers have electrochemical and photogalvanic applications.The invention is a novel process for doping polyacetylene or polyphenylene and the products obtained by the process. The process provides N doped polymers that can be used in electrochemical or photovoltaic applications.

Abstract: Process for the production of a ceramic member having inclusions of electrically conductive material flush with its surface, wherein it comprises depositing on the bottom of a mould a small number of particles of said conductive material, placing above said particles the ceramic powder and compressing together the aggregate formed by the powder and the particles, followed by fritting at a temperature below the melting temperature of the conductive material.Cathode--solid electrolyte assembly obtained by using the above process.

Abstract: A sifter comprising an upper part and a lower part which are engaged one into the other, the lower part fixedly carrying the gauze of the sifter, characterized in that the lower part is in one piece, being formed by a central portion having a U-shaped cross-section and receiving the edge of the gauze, said central portion being terminated by two cylindrical or conical portions. The lower end of the upper part, bears against the gauze to hold it in a tensioned condition.

Abstract: Polymerizations catalyzed by very finely divided lithium.The process is characterized in using lithium having an average particle diameter of less than 2.mu. and preferably of 0.1.mu. or less as a polymerization initiator.The process permits .alpha.-.omega. dilithic oligomers to be obtained.

Abstract: Very finely divided lithium.A mixture of inert gas and fine particles of lithium in suspension in the said gas is filtered on a bed of solid bodies which can be stirred, the mesh size of said bodies, the height of said bed and the speed of stirring being such that the metal particles are retained without causing the formation of a metallic slab on the surface.The suspensions of fine lithium particles in solutions are stable.

Abstract: The invention relates to a process for the treatment of a metal oxide powder, particularly a UO.sub.2 or PuO.sub.2 powder, with a view to its fritting.This process consists of oxidizing the powder, so as to form on its surface a hydrated oxide layer of the same metal. When the oxide is UO.sub.2 or PuO.sub.2 and mixtures thereof, as well as those prepared with ThO.sub.2, the treated powder can be used for producing nuclear fuel pellets by cold compression, followed by fritting.