Abstract: A process for recovering uranium and/or thorium from a liquid containing uranium and/or thorium is disclosed, which comprises capturing the uranium and/or thorium in the liquid by an amorphous silica precipitate formed by adding water glass to the liquid, making the captured uranium and/or thorium eluted from the precipitate by acid-treatment, recovering the eluted uranium and/or thorium as an acidic solution, and regenerating the precipitate to water glass by use of an alkali metal hydroxide solution. Thus, the uranium and/or thorium can be recovered in high yield and the amorphous silica precipitate, that is, a formed radioactive solid waste can be remarkably reduced.

Abstract: A steel wire element useful in the reinforcement of rubber compositions in which the steel wire is provided with an adhesive coating comprising a brass alloy containing 58% to 75% copper and cobalt in an amount sufficient in use to improve the adhesion between the coated steel wire and the rubber composition. Preferably the brass alloy contains 2% to 4% of cobalt. Applications include coated steel cords for use in vehicle tires and conveyor belts and hoses.

Abstract: A process for recovering uranium and/or thorium from a liquid containing uranium and/or thorium is disclosed, which comprises making a precipitate composed mainly of amorphous silica formed by adding water glass to the liquid containing uranium and/or thorium, capturing the uranium and/or thorium in the liquid by the precipitate, treating the precipitate with acid to elute the captured uranium and/or thorium, adding ammonia or hydrogen peroxide to an acidic solution containing the eluted uranium and/or thorium to form a precipitate composed of ammonium salt or peroxide of the uranium and/or thorium, and filtering out the ammonium salt or peroxide precipitate. Thus, high purity solid uranium and/or thorium reutilizable for manufacture of nuclear fuel material can be recovered in high yield.

Abstract: A welded flexible screen deck comprising a series of parallel screen rods and transverse supporting rods wherein the supporting rods are secured at the back side of the screen and have a cross-sectional profile with a substantially rectangular body portion and a rib portion resting against the screen rods such that the height h of the cross section does not exceed the width b and wherein the thickness d of the body portion is .ltoreq. h/2.

Abstract: A novel gap type surge absorber. The surge absorber comprises a plurality of conductive ceramic thin films formed on the surface of a molded insulating body and separated from each other by an extremely narrow gap, electrodes composed of a metallic material fixed to both ends of the plural conductive ceramic thin films and an inert gas sealed between the electrodes. The surge absorber is based on a two-stage discharge mechanism consisting of a discharge due to electrons emitted between the conductive ceramic thin films when a surge voltage is applied to the electrodes and a following creeping discharge generated between the electrodes. The surge absorber has a prolonged life and a good annealing characteristic as well as a very small discharge lag and a small electrostatic capacity and is excellent in cutting off a follow current.

Abstract: Reinforcing members for the reinforcement of hardenable or settable material such as concrete or mortar are disclosed. The reinforcing members comprise a plurality of wire elements such as fibers united by a binder which loses its binding ability when mixed with the settable material, thereby releasing the elements in a random manner in the matrix.Methods are also disclosed for mixing the reinforcing members in the matrix and for making the reinforcing members.

Abstract: Reinforcing members for the reinforcement of hardenable or settable material such as concrete or mortar are disclosed. The reinforcing members comprise a plurality of wire elements such as fibers united by a binder which loses its binding ability when mixed with the settable material, thereby releasing the elements in a random manner in the matrix. Methods are also disclosed for mixing the reinforcing members in the matrix and for making the reinforcing members.

Abstract: An energy absorbing element such as a spring, shock absorber or vibration damper in the form of a laminated structure comprising at least one rigid non-elastomeric layer such as a reinforced plastic material bonded to a visco-elastic layer such as a vulcanizable elastomer in which twisted fiber bundles are embedded in the visco-elastic layer. Preferably the twisted fiber bundle comprises a steel cord having an elongation at rupture between 1.5 and 8%. An anchoring layer between the visco-elastic layer and the non-elastomeric layer may be employed.

Abstract: A process for pressure welding two metal bars together by their ends which omprises bringing together the ends to be welded, the ends being in a wedge-shaped form and at a temperature between melting temperature and 450.degree. C. below the melting temperature, pressing both ends together in the longitudinal direction of the bars so that the ends penetrate into each other, with the edges of the wedges in crossing relationship, and continuing to press both ends into each other until substantially all of the surface material of both wedges is expelled out of the cross-sectional shape of the welded bars.

Abstract: In forming an optical waveguide, a method of passing a hydrogen free vapor containing a compound consisting of C,N,O,S, or Se and at least one halogen therewith between a silica core and spaced cladding material prior to heat fusing said core and cladding material together.

Abstract: A steel wire element useful in the reinforcement of rubber compositions in which the steel wire is provided with an adhesive coating comprising a brass alloy containing 58% to 75% copper, and cobalt in an amount sufficient in use to improve the adhesion between the coated steel wire and the rubber composition. Preferably the brass alloy contains 2% to 4% of cobalt. Applications include coated steel cords for use in vehicle tires and conveyor belts and hoses.

Abstract: A propeller nozzle or duct having means for admitting fluid under pressure into the area of cavitation for the purpose of inhibiting bubble formation and implosion to suppress cavitation and reduce cavitation erosion, the means comprising walls forming an annular passage within the nozzle or duct, a passage communicating between the annular passage and the space within the nozzle or duct below the horizontal centerline thereof, and a passage communicating between the annular passage means and an area above the horizontal centerline coincidental with the zone of potential cavitation within the nozzle or duct and positioned substantially in the plane of the propeller such that fluid subjected to an augmented pressure under the influence of the propeller blade below the horizontal center line will be at an incremental pressure above that of the fluid above the horizontal center line to thereby promote the flow of fluid from the former location to the latter location through the passage there communicating to the

Abstract: Reinforcing members for the reinforcement of hardenable or settable material such as concrete or mortar are disclosed. The reinforcing members comprise a plurality of wire elements such as fibers united by a binder which loses its binding ability when mixed with the settable material, thereby releasing the elements in a random manner in the matrix. Methods are also disclosed for mixing the reinforcing members in the matrix and for making the reinforcing members.

Abstract: A mesh or netting useful for fencing animals comprising a plurality of longitudinal wires mutually connected together in the vertical direction by weft wires, wherein the longitudinal wires as a function of their positions in the vertical direction of the mesh or netting have different strengths. The wires may be arranged in groups wherein the wires strengths vary from group to group. The differences in wire strengths may be obtained by wires having different thicknesses, iron or steel wires of different carbon contents, wires made of different materials or wires having different numbers of elementary wires.

Abstract: An expansion turbine is used to develop power, wherein combustion of fuel is carried out within the turbine. Increments of fuel are added to two or more points in the presence of a catalyst whereby temperature of the gas or equipment is controlled at substantially isothermal conditions.

Abstract: Thin-layer evaporators are described in which evaporation cylinders and a cylindrical vapor-collection vessel of the same height are mounted to expand in parallel between horizontal base and top plates joined by a vertical jacket surrounding the cylinders and vessel and confining together with the plates a steam jacket. Rotors in the cylinders apply thin layers of the substance to be dried to the inner surfaces of the cylinders, from the tops of which vapors are discharged to the top of the vessel. A collecting conduit leads vapor from the bottom of the vessel to a compressor that delivers the compressed vapor to join a supply of super-heated steam passing into the steam jacket. Droplets separated in the vessel are discharged from the vessel through an outflow conduit. Solids and/or concentrates fall out of the evaporation cylinders into a clearing chamber from which they are evacuated into a trap by a rotary scoop.

Abstract: A box for ampoules has a front wall with a top edge well below the top edge of the rear wall so as to define (with side walls) an opening closed by a cover extending from the rear wall and overlapping the front wall to which it is secured by an adhesive edge. Lines of perforations across the overlapping portion define a web to be torn off when access is to be had to the ampoules. This leaves the remaining part of the cover with a tongue which, when the box is again to be closed, is tucked into a pocket between the front wall and a support for the ampoules which also strengthens the front wall. The support includes corrugated cardboard providing compartments for the ampoules. The tongue and top edge of the front wall are shaped to interlock.