Abstract: An extendable universal support assembly is especially adapted for use in maintaining computers and other electronic devices. A mounting bracket pivotally mounts two laterally spaced sets of pairs of vertically aligned anchors. A first set of pairs of arms of substantially equal length are pivotally mounted to the bracket anchors. A second set of arms of uniform length are mounted between the arms of the first set of arms by a pin to define a second pair of parallel pivot axes which are parallel to the first pair of parallel pivot axes. A frame is pivotally mounted to the second set of arms. A table is rotatably mounted to a platform supported on the frame and is positionable about a rotation axis parallel to the first and second pivot axes. The table is variably positionable relative to the mounting bracket and is rotatable about the axis of rotation. A pair of retainers is preferably mounted to the table and adjustably positionable relative to the table for retaining the computer or device on the table.

Abstract: An extendable universal support assembly is especially adapted for use in maintaining computers and other electronic devices. A mounting bracket pivotally mounts two laterally spaced sets of pairs of vertically aligned anchors. A first set of pairs of arms of substantially equal length are pivotally mounted to the bracket anchors. A second set of arms of uniform length are mounted between the arms of the first set of arms by a pin to define a second pair of parallel pivot axes which are parallel to the first pair of parallel pivot axes. A frame is pivotally mounted to the second set of arms. A table is rotatably mounted to a platform supported on the frame and is positionable about a rotation axis parallel to the first and second pivot axes. The table is variably positionable relative to the mounting bracket and is rotatable about the axis of rotation. A pair of retainers is preferably mounted to the table and adjustably positionable relative to the table for retaining the computer or device on the table.

Abstract: A process for the selective production and isolation of high specific activity Cu67 from proton-irradiated enriched Zn70 target comprises target fabrication, target irradiation with low energy (<25 MeV) protons, chemical separation of the Cu67 product from the target material and radioactive impurities of gallium, cobalt, iron, and stable aluminum via electrochemical methods or ion exchange using both anion and cation organic ion exchangers, chemical recovery of the enriched Zn70 target material, and fabrication of new targets for re-irradiation is disclosed.

Abstract: A process for the selective production and isolation of high specific activity Cu67 from proton-irradiated enriched Zn70 target comprises target fabrication, target irradiation with low energy (<25 MeV) protons, chemical separation of the Cu67 product from the target material and radioactive impurities of gallium, cobalt, iron, and stable aluminum via electrochemical methods or ion exchange using both anion and cation organic ion exchangers, chemical recovery of the enriched Zn70 target material, and fabrication of new targets for re-irradiation is disclosed.

Abstract: A process for the selective production and isolation of high specific activity cu67 from proton-irradiated enriched Zn70 target comprises target fabrication, target irradiation with low energy (<25 MeV) protons, chemical separation of the Cu67 product from the target material and radioactive impurities of gallium, cobalt, iron, and stable aluminum via electrochemical methods or ion exchange using both anion and cation organic ion exchangers, chemical recovery of the enriched Zn70 target material, and fabrication of new targets for re-irradiation is disclosed.

Abstract: Hafnium is recovered from irradiated tantalum by: (a) contacting the irradiated tantalum with at least one acid to obtain a solution of dissolved tantalum; (b) combining an aqueous solution of a calcium compound with the solution of dissolved tantalum to obtain a third combined solution; (c) precipitating hafnium, lanthanide, and insoluble calcium complexes from the third combined solution to obtain a first precipitate; (d) contacting the first precipitate of hafnium, lanthanide and calcium complexes with at least one fluoride ion complexing agent to form a fourth solution; (e) selectively adsorbing lanthanides and calcium from the fourth solution by cationic exchange; (f) separating fluoride ion complexing agent product from hafnium in the fourth solution by adding an aqueous solution of ferric chloride to obtain a second precipitate containing the hafnium and iron; (g) dissolving the second precipitate containing the hafnium and iron in acid to obtain an acid solution of hafnium and iron; (h) selectively ad

Abstract: Strontium-82 is recovered from spent strontium-82/rubidium-82 generators to provide a source of strontium-82 for additional strontium-82/rubidium-82 generators. The process involves stripping of the strontium-82 from used strontium-82/rubidium-82 generators followed by purification of the strontium-82 material to remove additional metal contaminants to desired levels.

Abstract: A process for selective separation of sodium-22 from a proton irradiated minum target including dissolving a proton irradiated aluminum target in hydrochloric acid to form a first solution including aluminum ions and sodium ions, separating a portion of the aluminum ions from the first solution by crystallization of an aluminum salt, contacting the remaining first solution with an anion exchange resin whereby ions selected from the group consisting of iron and copper are selectively absorbed by the anion exchange resin while aluminum ions and sodium ions remain in solution, contacting the solution with an cation exchange resin whereby aluminum ions and sodium ions are adsorbed by the cation exchange resin, and, contacting the cation exchange resin with an acid solution capable of selectively separating the adsorbed sodium ions from the cation exchange resin while aluminum ions remain adsorbed on the cation exchange resin is disclosed.

Abstract: A process for selective separation of sodium-22 from an irradiated target including dissolving an irradiated target to form a first solution, contacting the first solution with hydrated antimony pentoxide to selectively separate sodium-22 from the first solution, separating the hydrated antimony pentoxide including the separated sodium-22 from the first solution, dissolving the hydrated antimony pentoxide including the separated sodium-22 in a mineral acid to form a second solution, and, separating the antimony from the sodium-22 in the second solution.

Abstract: A process for selective separation of strontium-82 and strontium-85 from proton irradiated molybdenum targets is provided and includes dissolving the molybdenum target in a hydrogen peroxide solution to form a first ion-containing solution, passing the first ion-containing solution through a first cationic resin whereby ions selected from the group consisting of molybdenum, niobium, technetium, selenium, vanadium, arsenic, germanium, zirconium and rubidium remain in the first ion-containing solution while ions selected from the group consisting of rubidium, zinc, beryllium, cobalt, iron, manganese, chromium, strontium, yttrium and zirconium are selectively adsorbed by the first resin, contacting the first resin with an acid solution capable of stripping adsorbed ions from the first cationic exchange resin whereby the adsorbed ions are removed from the first resin to form a second ion-containing solution, evaporating the second ion-containing solution for time sufficient to remove substantially all of the acid

Abstract: A process for selective separation of strontium-82 and strontium-85 from proton irradiated molybdenum targets comprises dissolving the molybdenum target in a hydrogen peroxide solution to form a first solution containing ions selected from a group consisting of molybdenum, niobium, technetium, selenium, vanadium, arsenic, germanium, zirconium, rubidium, zinc, beryllium, cobalt, iron, manganese, chromium, strontium, and yttrium; passing the solution through a first cationic resin whereby ions selected from a group consisting of zinc, beryllium, cobalt, iron, manganese, chromium, strontium, yttrium a portion of zirconium and a portion of rubidium are selectively absorbed by the first resin; contacting the first resin with an acid solution to strip and remove the absorbed ions from the first cationic exchange resin to form a second solution; evaporating the second solution for a time sufficient to remove substantially all of the acid and water from the solution whereby a residue remains; dissolving the residue i

Abstract: A method of producing carrier-free .sup.67 Cu by proton spallation combined with subsequent chemical separation and purification is disclosed. A target consisting essentially of pressed zinc oxide is irradiated with a high energy, high current proton beam to produce a variety of spallogenic nuclides, including .sup.67 Cu and other copper isotopes. The irradiated target is dissolved in a concentrated acid solution to which a palladium salt is added. In accordance with the preferred method, the spallogenic copper is twice coprecipitated with palladium, once with metallic zinc as the precipitating agent and once with hydrogen sulfide as the precipitating agent. The palladium/copper precipitate is then dissolved in an acid solution and the copper is separated from the palladium by liquid chromatography on an anion exchange resin.

Abstract: A trailer hitch attachment mounting between a towing vehicle and a trailer for simulating a "5th" wheel trailer hookup. The hitch mounts to the towing vehicle undercarriage rearwardly adjacent the rear axle and includes a drawbar that extends to the towing tongue of the trailer. The drawbar is pivoted at a front end about a primary axis directly behind the rear axle and at a rearward end, about a secondary axis at the connection to the trailer towing tongue. A lockout mechanism is provided for alternately locking the drawbar against pivotal motion about one or the other the pivot axes, so only pivotal motion will be allowed about only one axis at any given time. The pivot axes are alternated according to relative angular movement of the towing vehicle relative to the trailer.