Abstract: A novel method for the production of bis(arene) technetium radiodiagnostic imaging agents is herein disclosed. The method consists of employing Fischer synthesis reactants in an ultrasonic bath. The products are virtually pure, thus lacking the severe degree of disproportionation which routinely occurs when partially alkylated bis(arene)technetium compounds are produced by thermally driven reactions.

Abstract: The invention relates to an ammonium plutonate uranate, its preparation process and its use for producing the mixed oxide (U,Pu)O.sub.2.The ammonium plutonate uranate of formula [Cu,Pu)O.sub.3 ].sub.2 [NH.sub.3 ].sub.x [H.sub.2 O].sub.y in which x and y have a value from 0 to 5 with x+y=5, is prepared by neutralization with ammonia of an aqueous solution of uranium VI and plutonium VI salts, e.g. uranyl and plutonyl nitrates. This solution can be prepared by oxidizing a solution of plutonium IV and uranyl nitrate. By calcining under a reducing atmosphere the ammonium plutonate uranate precipitate formed, a mixed oxide (U,Pu)O.sub.2 is obtained having a solubility in 11N HN O.sub.3 without fluoride of at least 99.9%.

Abstract: Silica gels modified with amino groups or magnesium silicates are suitable carrier materials for technetium-99m generators since they retain copper(II) ions well and thus produce a copper-free eluate.

Abstract: Novel propylene amine oxime ligands have the formula ##STR1## where each of R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 or R.sub.8 may be hydrogen, hydrocarbon, carboxyl, amine, amide or nitrile, provided that, if R.sub.1 is the same as R.sub.9 and R.sub.2 is the same as R.sub.7, then R.sub.8 is not H. These unsymmetrical ligands form complexes with Technetium-99m which are capable, on injection into mammals, of crossing the blood-brain barrier and of being retained in the brain for a time to permit diagnosis.

Abstract: The invention is concerned with dihydrobenzothiophene and thiochromane derivatives of the generic formula ##STR1## The compounds show anti-hypertensive, platelet aggregation inhibiting, hypolipemic, antianoxic spasmolytic, anthithrombotic, calcium antagonizing and neuroleptic activity.

Abstract: The reaction of an .alpha.,.beta.-ethylenically unsaturated aldehyde with organic amines which is further reacted with a carboxylic acid, organic halide or an epoxide-containing compound are employed as corrosion inhibitors for preventing corrosion of ferrous metals in contact with corrosive brine, oil and gas well fluids.

Abstract: Methods for producing large, highly nuclear spin-polarized thermonuclear fuels HD, D.sub.2, HT and DT in a state where they can be stored and manipulated for appreciable times at ordinary liquid helium temperatures, are disclosed. Molecular mixtures, radiation treatments, symmetry species conversion catalysts, molecular species spatial arrangements, radio frequency irradiations and anneal programs are given to provide polarized .uparw.D and polarized .uparw.T in usable forms in the solid, liquid and high density gaseous phases.

Abstract: Novel uranium compounds, their preparation process and their use as catalysts for the hydrogenation of unsaturated organic compounds.The uranium compounds are in accordance with formula: ##STR1## in which R.sup.1 represents an alkyl group, R.sup.2 an alkyl group, R.sup.3 an alkyl or aryl group, x is equal to 0 or is an integer between 1 and 5, m is equal to 1, 2 or 3, n is equal to 0, 1 or 2, p is equal to 1 or 2, provided m+n is equal to 3.They can be used as catalysts for the hydrogenation of organic compounds, such as olefins, preferably dissolved in an organic solvent, such as tetrahydrofuran.

Abstract: The present invention concerns a procedure for transforming radioactive wastes into ceramics. From the radioactive waste solution, the waste is bound to an inorganic ion exchanger either with batch equilibration or in columns. After the waste has been bound to the ion exchanger, it is transformed into ceramics by admixing it to tile clay or to another ceramizing material and by firing the mixture to a tile. This yields an extremely low soluble and mechanically durable ultimate disposal product of the nuclear waste. The ceramizing procedure is applicable with any inorganic ion exchanger.

Abstract: Hydroxylapatite, a compound having the formulaM.sub.10 (PO.sub.4).sub.6 (OH).sub.2,wherein M is calcium, strontium, barium, lead, iron, sodium, potassium, zinc, cadmium, magnesium, aluminum or a rare earth metal, as a support medium for strontium-82 in a strontium-82/rubidium-82 parent-daughter radionuclide generator.

Abstract: A method is described for decontaminating magnesium fluoride resulting from the reduction of uranium fluoride to the metal by reaction with magnesium. This decontamination employs reactions with magnesium and carbon to remove radioactive components from the said magnesium fluoride in its molten state.

Abstract: Separation of carbon isotopes by photolysis of CS.sub.2 in cryogenic solutions of nitrogen, krypton and argon with 206 nm light from an iodine resonance lamp is reported. The spectral distribution of the ultraviolet absorption depends on solvent. Thus, in liquid nitrogen the photolytic decomposition rate of .sup.13 CS.sub.2 is greater than that of .sup.12 CS.sub.2 (because the absorption of 206 nm radiation is greater for .sup.13 CS.sub.2), whereas in liquid krypton and liquid argon the reverse is true. The shift in ultraviolet spectrum is a general phenomenon readily characterized as a function of solvent polarizability, and exhibits behavior similar to that for vibrational transitions occurring in the infrared.

Abstract: Disclosed is a process for forming a new group of cobalt-based alloys containing 3-18% hafnium carbide (HfC), the HfC having a particle size finer than about three microns. The class of alloys exhibits excellent tensile strength characteristics at very low temperatures, exhibits very good time-temperature stability, and shows excellent oxidation characteristics even at temperatures above about 1000.degree. C. In addition, the alloy is attractive for use in the wrought state because of its ductility and low-temperature toughness characteristics.

Abstract: This invention provides a particulate dry blend thickening agent consisting of polygalactomannan gum (e.g., guar gum), benzoquinone, and a basic reagent (e.g., sodium carbonate).This invention further provides a process for preparing a viscoelastic aqueous solution which contains a benzoquinone ether adduct of polygalactomannan gum that is formed in situ.An invention thixotropic aqueous medium is characterized by excellent heat stability and high tolerance to the presence of inorganic salts.A unique property of an invention thixotropic aqueous medium is a time-dependent gradual restoration of high viscosity after cessation of high shear deformation.

Abstract: Described is a process for imparting an "air dried cloth" aroma to cloth, synthetic or natural, previously dried using a clothes drier, comprising the step of contacting the cloth prior to drying with an aroma augmenting or enhancing quantity of either (i) a mixture consisting essentially of:(a) from about 0.5 up to about 5% by weight of said composition of n-hexanal;(b) from about 2 up to about 12% by weight of said composition of n-heptanal;(c) from about 5 up to about 15% by weight of said composition of n-octanal;(d) from about 40 up to about 70% by weight of said composition of n-nonanal;(e) from about 10 up to about 30% by weight of said composition of n-decanal;(f) from about 0.5 up to about 5% by weight of said composition of n-undecanal;(g) from about 0.5 up to about 5% by weight of said composition of n-dodecanal;(h) from about 0.

Abstract: A method of producing an oxide fuel pellet having a low density is provided which comprises adding a manganese compound to an oxide fuel powder selected from a group consisting of uranium dioxide powder and a mixed powder of uranium dioxide and plutonium dioxide, in an amount of 0.01 to 5.0% by weight based on the weight of the oxide fuel powder, molding the resulting mixture into a pellet form, and sintering the pellet-formed mixture at a temperature of 1,200.degree. to 1,700.degree. C.

Abstract: A method of chemically separating plutonium from thorium. Plutonium and thorium to be separated are dissolved in an aqueous feed solution, preferably as the nitrate salts. The feed solution is acidified and sodium nitrite is added to the solution to adjust the valence of the plutonium to the +4 state. A chloride salt, preferably sodium chloride, is then added to the solution to induce formation of an anionic plutonium chloride complex. The anionic plutonium chloride complex and the thorium in solution are then separated by ion exchange on a strong base anion exchange column.

Abstract: A method for incorporating radioactive phosphoric acid solutions in concrete is described wherein the phosphoric acid is reacted with Ca(OH).sub.2 to form a precipitate of hydroxyapatite and the hydroxyapatite is mixed with portland cement to form concrete.

Abstract: The present invention provides a process for preparing stable, uniform dispersions of chain extenders in polyurethane-forming polyol. The preferred chain extender is hydroquinone di(.beta.-hydroxyethyl)ether. The process comprises an adiabatic quenching step in combination with an annealing step. The inventive process avoids the need for slow, carefully controlled cooling schemes.