Abstract: A device for producing ozone is characterized by an inner electrode made from a plurality of metal wires. Accordingly, the diameter of the outer electrode is correspondingly reduced. The ratio of the outer diameter electrode to the inner diameter electrode is greater than two.

Abstract: The removal of radium from acid-leached uranium mill tailings has been difficult due to its strong retention as mixed sulfates and in adsorbed forms. With this invention the leaching action of a complexing agent (reducing the free radium cation concentration in solution) is combined with that of a reducing agent. Thus, high valency metal hydroxides and basic salts (notably Fe.sup.3+) which tend to retain radium are converted to the lower valency form which is much more soluble in the complexing agent. The reducing agent employed is sodium hydrosulfite, in combination with various organic complexing agents; the preferred complexing agent is EDTA. Over 90% of the radium in uranium leach tailings from Elliot Lake can be removed in 1 hour contact at room temperature with a solution comprising 0.04M of both sodium hydrosulfite and EDTA, with 1.0M potassium chloride added as a surface charge depressant. The gradual addition of the solids to liquid permits the use of low liquid/solid ratios.

Abstract: In modern ozone generators high power densities can be achieved using ceramic-based dielectrics and suitable gap widths and double cooling. By constructing the dielectric layer from dielectric powders of different grain size and binding with artificial resin, the long-term breakdown voltage of the dielectric layer can be increased to such an extent that they fulfil the operating requirements.

Abstract: In a method for denitrifying the nitric acid- and nitrous acid-containing spent acid phase from the nitration of an aromatic hydrocarbon by the mixed acid process which comprises forming a denitrification reaction medium by contacting the spent acid phase with an aromatic hydrocarbon under nitration reaction conditions to recover the nitric acid by the formation of a nitroaromatic hydrocarbon, the improvement which comprises(a) adding an amount of aromatic hydrocarbon which is slightly less than or equal to the stoichiometric amount necessary to deplete the spent acid phase of nitric acid,(b) photometrically monitoring the denitrification reaction medium for the appearance of a dark red to black color, and(c) upon detection of such color, adjusting the aromatic hydrocarbon:nitric acid molar ratio in the denitrification reaction medium to eliminate the color by reducing the aromatic hydrocarbon feed rate, or adding nitric acid to the denitrification reaction medium.

Abstract: An apparatus for curing resin films coated on dental prosthesis comprises in combination a casing 1, an activation energy-radiating lamp 4 disposed therein and adapted to give off the radiations of activation energy toward the prosthesis, a turntable 2 slidably disposed in the casing for detachment therefrom and a mechanism for lifting and lowering 5 the turntable by a knob arranged outside of the casing. A door is set up on the wall of the casing and the door has therethrough a viewing window.

Abstract: A method and apparatus are disclosed for the pyrolytic destruction of toxic or hazardous waste materials using equipment that is compact and transportable. The waste materials are fed into a plasma arc burner where they are atomized and ionized, and then discharged into a reaction chamber to be cooled and recombine into product gas and particulate matter. The recombined products are quenched using a spray ring attached to the reaction vessel. An alkaline atomized spray produced by the spray ring neutralizes the recombined products and wets the particulate matter. The product gas is then extracted from the recombining products using a scrubber, and the product gas is then burned or used for fuel. Monitoring devices are used to check the recombined products and automatically shut down the apparatus if hazardous constituents are encountered therein.

Abstract: A powder-metallurgy method and assembly for producing tubular product having at least one surface and preferably an interior 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 extruded to compact metal particles introduced to the cavity to substantially full density and metallurgically bonded the particles to the internal surface to provide a desired destructive-media resistant cladding.

Abstract: The present invention relates to an activator of peroxo compounds, its method of manufacture, and its method of use. The activator is useful as an additive to textile cleansing and disinfecting agents that contain peroxo compounds. The invention permits the bleaching and disinfecting of textiles at temperatures between 25.degree. C. and 60.degree. C.The activator comprises a combination of the following compounds, by weight: (a) phthalic anhydride (4-98%); (b) N-acetylphthalimide (2-96%); (c) phthalimide (0.1-28%); (d) stabilizer (0.2-25%) and/or (e) soluble polymer (0.2-12%); wherein the stabilizer is an aliphatic carboxylic acid having from 12-22 carbon atoms, the polymer is soluble in water or in organic solvents, and the particle size of the final activator composition is from 0.1 to 3.5 mm.

Abstract: Precursor gaseous mixtures from which to glow discharge deposit wide and narrow band gap semiconductor alloy material, said material characterized by improved photoconductivity and stability and improved resistance to photodegradation. There is also specifically disclosed a method of fabricating a narrow band gap semiconductor which method does not suffer from the effects of differential depletion of the components of the precursor gaseous mixture.

Abstract: An apparatus and method for monitoring stored material is disclosed. Material to be stored and monitored is placed within the innermost container of a series of nested containers and monitoring fluids are circulated in a closed loop of fluid flow through the spaces between the nested containers. Monitoring devices are used to analyze said monitoring fluids to detect leakage of the stored material from the innermost nested container and to detect the migration of external fluids into the series of nested containers. A computer based monitoring system continually checks the values of various parameters of the monitoring fluids to immediately detect and report the presence of stored material or external fluid in the monitoring fluids. The stored material may then be immediately retrieved from storage to repair leaks in the series of nested containers. The invention is particularly suited for monitoring the storage of hazardous material such as radioactive waste material.

Abstract: A method of etching silicon with a laser at a very fast rate of the order of 45 microns/second includes the steps of providing an atmosphere of sulfur hexafluoride about the silicon and directing a continuous laser beam having a wavelength of about 0.6 or less microns at said silicon.

Abstract: An igniter composition for a gas generator comprises a stoichiometric comation of pyrotechnic metal selected from the group consisting of beryllium, boron, lithium, sodium, titanium, magnesium, aluminum and alloys and mixtures thereof and one or more halogenated polymers; and fumed colloidal silica in an amount from about 0.5 to about 2.5 percent of the total composition weight.

Abstract: The invention describes branched glycosides which are substantially liquid materials at high solids concentration.

Abstract: A reserve battery which includes a plurality of series-connected battery cells which are simultaneously filled with electrolyte from a reservoir through a like plurality of filling conduits formed of electrically-insulating material and connected respectively between the reservoir and the cells. In one embodiment, the cross-sectional area of each filling conduit is several orders of magnitude smaller than the area of each cell electrode active surface and the length of each filling conduit exceeds the square root of the filling conduit cross-sectional area by at least two orders of magnitude, to thus minimize intercell short circuits.

Abstract: Bis(2-fluoro-2,2-dinitroethoxy)acetonitrile, N.tbd.C--CH[OCH.sub.2 CF(NO..2).sub.2 ].sub.2, is useful as a coplasticizer with bis(2-fluoro-2,2-dinitroethyl)formal in energetic plasticizer mixtures for plastic bonded explosives.

Abstract: 2,2,2-trifluoroethoxy bis(2-fluoro-2,2-dinitroethoxy)methane, CF.sub.3 CHb.2 OCH[OCH.sub.2 CF(NO.sub.2).sub.2 ].sub.2, is an energetic plasticizer useful in plastic-bonded explosives. Of particular importance is its miscibility with fluoropolymers.

Abstract: A compact and portable biosensor which can detect the presense of an environmental stimulus is produced by extracting cell membrane proteins which are specific for the stimulus, purifying the proteins, and reincorporating the proteins into synthetic membranes. Electrodes are used to measure the voltage or current changes across the membrane when the proteins in the synthetic membranes react to the specific stimulus. The magnitude of the changes indicate the concentration of the stimulus in the environment.

Abstract: Articles or structures can be treated to convert mustard gas to divinylsude by coating on said articles or structures a composition containing a transition metal complex of a tetrasulfonated or tetraamino phthalocyanine.

Abstract: A test chamber for simulating outdoor environmental conditions including the controlled formation of dew or frost on test objects in the chamber. Air processing equipment connected to the chamber includes two types of humidifying equipment, two types of de-humidifying apparatus, and a heating/cooling system using a secondary heating/cooling fluid which heats and/or cools the air without condensation. A radiative cooling system comprising a chilled black body absorbs heat from test objects to induce dew or frost formation. The equipment is controlled by a microprocessor.

Abstract: Process and apparatus for dewatering slurry recovered from waste water, generated in the production and treatment of metals, are provided in which the flocculated slurry is first dewatered mechanically to provide a water output which is returned upstream for further treatment, and a sludge output containing about 25-32 percent by weight (w/o) solids and the remainder free liquid. The sludge is passed through a thermal drier and, after substantially all the free water has been removed, is disposed of as desired.