Abstract: Through modular construction of the ozone generator from block modules (1) of metal which have through holes (2) as outer electrodes and can be directly cooled, the required mechanical tolerances can be maintained. In particular, if the high voltage electrode (8) and the dielectric (11) is cooled, high power densities can be achieved.

Abstract: A tracer particle for determining the concentration of a microingredient in a bulk material is disclosed. The tracer particle comprises a finely divided ferromagnetic particulate material approximately 90% of which is approximately 325 mesh or smaller, a microingredient and a binder wherein the microingredient and ferromagnetic material are entrapped in the binder and wherein the tracer particle is approximately 35 to 80 mesh in size.

Abstract: A corrosion-inhibiting composition and method of inhibiting corrosion on metal surfaces are described. The composition comprises a reaction product of (a) a first constituent selected from an epoxide having an average of at least about one vicinal epoxide per molecule and a halogenated aliphatic compound having at least one displaceable halogen and (b) a second constituent comprising a dimercaptan. The reaction product in a hydrocarbon diluent is an effective corrosion inhibitor when applied to metal surfaces in highly corrosive environments, and is designed particularly for downhole metal surfaces of oil drilling equipment.

Abstract: A powder-metallurgy method for producing tubular product having at least one surface and preferably an internal surface thereof clad with an alloy different from and preferably more resistant to destructive media than the material from which the remainder of the tubing is constructed. An assembly is constructed of a metal tubing having an internal surface to be clad and a tubular insert mounted generally axially within the tubing in spaced-apart relation to the internal surface thereof, which provides a generally annular cavity between the internal surface of the tubing and the tubular insert. This cavity is filled with metal particles of a composition to be clad on the tubing internal surface. The cavity is sealed and the assembly is heated to an elevated temperature at which it is forged to compact the metal particles introduced to the cavity to substantially full density and metallurgically bond the particles to the internal surface of the tubing to provide a desired destructive-media resistant cladding.

Abstract: The invention relates to a combustion inhibitor composition intended to cover partly the surface of blocks of double-base propellant. The inhibitor composition of the invention includes an aliphatic polyurethane obtained by the reaction of at least one polyisocyanate with a mixture of at least one polyetherpolyol containing at least three hydroxy groups per molecule and at least one polymer containing two hydroxy groups per molecule. This difunctional polymer is chosen from lactone polymers, such as poly-.epsilon.-caprolactone and polytetrahydrofuran. The inhibitor composition may also contain gasifiable fillers and an aliphatic plasticizer. The composition has good discreteness properties, while retaining excellent mechanical properties. The present invention has particular application in the field of solid weapon propulsion.

Abstract: 1-allyl-2-hydroxyalkyl-3,4,5,6-tetrabromophthalates and flame retardant thermosetting polyester compositions containing them are described.

Abstract: A liquid, homogeneous mixture for use in the LSC (Liquid Scintillation Counting) analysis technique, comprising a scintillation liquid, a scintillator and a surfactant, wherein the surfactant includes one or more phosphoric acid esters having formula 1 and/or formula 2 of the sheet of formulae, in which R', R" and R'" represent an organic group, which phosphor acid esters are neutralized to a pH, at which the neutralization product comprises a mono- and/or diphosphate with an alkaline material having a pK.sub.a of at least 5, and in which of the organic phosphoric acid esters having formula 1, R" and R'" may be the same or different.

Abstract: A thermochromic composition comprising:(i) at least one electron-donating organic chromogenic compound,(ii) at least one compound serving as a color developing material and selected from thiourea and derivatives thereof, guanidine and derivatives thereof, benzothiazole, and benzothiazolyl derivatives represented by the formula ##STR1## wherein A is --H, ##STR2## --NR.sub.2, --H.multidot.NR.sub.3 or --CSNR.sub.2 in which R is H, C.sub.1 -C.sub.10 alkyl, benzyl optionally substituted with C.sub.1 -C.sub.6 alkyl or cyclohexyl optionally substituted with C.sub.1 -C.sub.6 alkyl, with the proviso that all of R in --NR.sub.2, --H.multidot.NR.sub.3 and --CSNR.sub.2 can not be H, and M is Cu, Zn, Fe, Ni, Co or Te, and(iii) and at least one compound serving as a desensitizer and selected from the group consisting of alcohols, esters, ketones, ethers, acid amides, carboxylic acids and hydrocarbons.

Abstract: A simple, sensitive and specific spot test for 1,3,5-triamino-2,4,6-trinitrobenzene, TATB, is described. Upon the application of the composition of matter of the present invention to samples containing in excess of 0.1 mg of this explosive, a bright orange color results. Interfering species such as TNT and Tetryl can be removed by first treating the sample with a solvent which does not dissolve much of the TATB, but readily dissolves these explosives.

Abstract: A system for generating a substantially uniform plasma for processing a substrate having two major surfaces. Each of the substrate major surfaces may have electrically conductive portions. Two electrodes are oppositely disposed with respect to one another on either side of the substrate. A first r.f. power source is electrically connected to the first electrode and a second r.f. power source is electrically connected to the second electrode. The first and second r.f. power sources are out of phase with respect to one another, resulting in the generation of a substantially uniform plasma field.

Abstract: A method of and apparatus for detecting fuel leaks employing color variable indicators. The method comprises the steps of preparing and applying a water soluble non-staining indicator dye to a test surface, observing color changes indicative of hydrocarbon leaks and removing the indicator dye from the test surface. The apparatus comprises in combination means for preparing the indicator dye, means for applying the indicator dye to the test surface and means for removing the dye from the test surface. The indicator dye comprises a major portion of a dry inert mineral carrier from about 0.1 to about 5.0 weight percent of a direct dye which is non-staining on painted surfaces and which does not migrate into or penetrate polyurethane or epoxy resin base painted surfaces, and from about 0.1 to about 1.0 weight percent of a surfactant.

Abstract: Galactomannan gum-thickened aqueous compositions are stabilized with a dimercaptothiadiazole.

Abstract: The ozone generator having in combination a first tubular electrode surrounded by a tubular dielectric which, in turn, is surrounded by a second tubular electrode. Entry of air to be ozonized occurs into a first end of the first tubular electrode and, through a pattern of perforations, is permitted to escape therefrom into an annular volume between the first tubular electrode and the tubular dielectric. The first tubular electrode is centrally, radially, sealed so as to form two chemically and electrically separate chambers. The second or output chamber of the first tubular electrode is provided with a pattern of perforations which permits re-entry of the air, which has been ozonized while exposed to a voltage across the annular volume between the outside of the first electrode and the dielectric, to the second or output part of the first tubular electric.

Abstract: A plasma reactor comprises a working chamber, the chamber being adapted to receive at least one article and a volume of plasma which is capable of interacting with a material of the article. A pair of electrodes are positioned about the chamber. Further, a radio-frequency generator is provided. More particularly, the plasma reactor includes a radio-frequency voltage transformer. The transformer includes a primary winding that is connected to the generator and a secondary winding the center of which is grounded. The secondary winding is adapted to transform the energy received from the primary winding into plasma-exciting energy at the electrodes, whereby the voltage between the plasma and the ground is small such that voltage discharge between the plasma and any grounded parts is minimized.

Abstract: A method of producing a nutritionally dense, freeze dried food item usually n bar form in which uncooked food ingredients are mixed together and then cooked until about 40% to about 60% of the water content is removed by evaporation. Then the partially dried mixture is formed into the desired shape, then frozen and dehydrated to a moisture level which would produce a shelf-stable product. The freeze dried bars are packaged in impermeable containers. Food bars prepared by this method rehydrate faster and to a greater extent than food bars prepared by processes incorporating a compression step.

Abstract: This invention concerns novel compounds useful in compositions and methods for preventing the attachment of dental plaque to the surfaces of the teeth of mammals and as inhibitors of connective tissue destruction. The compounds of this invention comprise certain [ureylenebis-(phenylenesulfonylimino)]bis[hydroxynaphthalenesulfonic acids] and salts thereof which may be combined with pharmaceutically acceptable carriers or diluents to be administered in the form of conventional pharmaceutical compositions.

Abstract: In certain negative resists utilized for high-resolution lithography, cross-linking persists even after the exposing radiation is removed. This phenomenon causes exposed features to become enlarged. In accordance with the present invention, cross-linking in exposed resist regions is effectively quenched by purposely subjecting the exposed regions to oxygen immediately following exposure to cross-linking radiation. In, for example, full-field or step-and-repeat X-ray lithography, such quenching enables the consistent attainment of submicron features.

Abstract: A smoke generator having an air-powder mixing container with vacuum line achment to a mechanical smoke dispersing apparatus. The container has funnel shaped side walls to direct powder to a reduced container bottom. A pressurized input line extends to a point on the container bottom as does a vacuum powder outlet line. The powder outlet line is connected to a venturi mounted to the exhaust port of a small turbine engine. This draws the air-powder mixture from the container directly into the turbine exhaust and into the atmosphere.

Abstract: A method is disclosed for determining characteristics of semi-insulating lium arsenide that can be used to evaluate the suitability of the material for semiconductor processing. An n-channel test device formed on a substrate of semi-insulating gallium arsenide is illuminated with pulses of light. The decay in the photoconductance that occurs due to the illumination is measured in order to enable characterization of the shallow acceptor impurities which compensate the deep donors in the semi-insulating gallium arsenide.

Abstract: A novel product of the polymerization of butene-1 is highly stereoregular but nevertheless has low crystallinity and has properties of a thermoplastic elastomer.This elastomeric polybutylene is the total product. Its elastomeric qualitites lie between those of plasticized vinyl polymers and conventional vulcanized rubbers.The butene-1 polymers may be compounded with extenders and fillers for use as molded or extruded elastomeric product or may be used without plasticizer addition in place of flexible vinyl polymers, such as highly plasticized poly(vinylchloride) PVC.