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A resilient headband in a shape for being mounted on the head of the user. The headband is equipped with a longitudinal slotted member for holding a placard.
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| Number | Title | Issue Date |
| 7214318 | Method for separation of actinide elements A method for separation of actinide elements comprising feeding a solution containing actinide elements such as americium, curium, californium and the like, into a resin column in which a weakly basic primary, secondary or tertiary anion exchange resin obtained by r... | 05/08/2007 |
| 7157061 | Process for radioisotope recovery and system for implementing same A method of recovering daughter isotopes from a radioisotope mixture. The method comprises providing a radioisotope mixture solution comprising at least one parent isotope. The at least one parent isotope is extracted into an organic phase, which comprises an extrac... | 01/02/2007 |
| 7157022 | Multivalent metal ion extraction using diglycolamide-coated particles A separation medium, a method for using that separation medium and an apparatus for selectively extracting multivalent cations such as pseudo-lanthanide, prelanthanide, lanthanide, preactinide or actinide cations from an aqueous acidic sample solution is described. ... | 01/02/2007 |
| 7148393 | Ion-specific radiodecontamination method and treatment for radiation patients A surface contaminated by a radioactive isotope is cleaned by applying to it a solution that contains an ion-specific resin that is weakly bonded to an ion and a weak anion solution including a carrier, water, and an ion that frees the radioactive isotope from the c... | 12/12/2006 |
| 7087206 | Multicolumn selectivity inversion generator for production of high purity actinium for use in therapeutic nuclear medicine A multicolumn selectivity inversion generator separation method has been developed in which actinium ions, a desired daughter radionuclide, are selectively extracted from a solution of the thorium parent and daughter radionuclides by a primary separation column, str... | 08/08/2006 |
| 7066983 | Method for thiosulfate leaching of precious metal-containing materials Processes are provided for recovering precious metals from refractory materials using thiosulfate lixiviants. The processes can employ lixiviants that include at most only small amounts of copper and/or ammonia and operate at a relatively low pH, reduction of polyth... | 06/27/2006 |
| 6485695 | Method and apparatus for preparing Bi-213 for human therapeutic use This invention relates to a method and an apparatus for preparing Bi-213 to be integrated in a radioimmunocojugate for human therapeutic use. According to the invention the method comprises the sequence of steps as follows: a) an ampoule 5 containing coll... | 11/26/2002 |
| 6153154 | Method for sequential injection of liquid samples for radioisotope separations The present invention is a method of separating a short-lived daughter isotope from a longer lived parent isotope, with recovery of the parent isotope for further use. Using a system with a bi-directional pump and one or more valves, a solution of the par... | 11/28/2000 |
| 5966584 | Method of separating trivalent actinides from trivalent lanthanides Trivalent actinides can be separated from trivalent lanthanides in aqueous solutions at H+ concentrations of 2 mol/l to 0.001 mol/liter by extraction with bis(aryl)dithiophosphinic acid and a synergist such as TBP, TOPO and TBPO in an organic ... | 10/12/1999 |
| 5945342 | Method for digesting spent ion exchange resins and recovering actinides therefrom using microwave radiation The present invention relates to methods for digesting diphosphonic acid substituted cation exchange resins that have become loaded with actinides, rare earth metals, or heavy metals, in a way that allows for downstream chromatographic analysis of the ads... | 08/31/1999 |
| 5476641 | Method of separating and recovering plutonium and neptunium from plutonium- and neptunium-containing nitric acid solution A method of separating and recovering Pu and Np from a Pu- and Np-containing nitric acid solution. The method comprises the steps of subjecting a nitric acid solution containing Pu and Np to valence adjustment by adding a reducing agent consisting of hydr... | 12/19/1995 |
| 5460791 | Method for adsorbing and separating heavy metal elements by using a tannin adsorbent and method of regenerating the adsorbent A method of adsorbing and separating a heavy metal element by using a tannin adsorbent comprising: (a) adjusting the pH of a solution containing a plurality of heavy metal elements to a predetermined pH; (b) contacting the adsorbent with the solution in which ... | 10/24/1995 |
| 5437848 | Recovery of metal values from process residues A process for recovering metal and acid values from a source material containing metallic fluorides comprises digesting the source material in sulfuric acid to form a slurry, separating a fluoride containing solid phase and a metal containing first liquid... | 08/01/1995 |
| 5419887 | Separation of the isotopes of boron by chemical exchange reactions The isotopes of boron, 10 B and 11 B, are separated by means of a gas-liquid chemical exchange reaction involving the isotopic equilibrium between gaseous BF3 and a liquid BF3 . donor molecular addition complex ... | 05/30/1995 |
| 5419880 | Controlled acid-strong acid strip process A controlled multi-stage process for the stripping of uranium includes the introduction at one end of a solvent extraction device a uranium loaded organic solution. A concentrated stripping acidic aqueous solution is introduced at the other end of the sol... | 05/30/1995 |
| 5306399 | Electrochemical exchange anions in decontamination solutions Spent nuclear reactor coolant system decontamination solutions are first processed to remove the radioactive burden and to separate metallic impurities using cation exchange resins. The cation-processed waste solution is then flowed through an anion excha... | 04/26/1994 |
| 5219540 | Method of removing ruthenium contained in uranium-containing solutions A method for removing ruthenium from a uranium-containing solution comprising adding a nitrite to the solution and passing the solution over a quaternary ammonium or tertiary amine resin to selectively fix the ruthenium.... | 06/15/1993 |
| 5180526 | Cleaning of solutions of alkylphosphates A process for cleaning solutions of an alkylphosphate in a hydrophobic organic solvent. The process involves the steps of washing the solution with aqueous sulphuric acid, and contacting the washed solution with an ion exchange material. The ion exchange ... | 01/19/1993 |
| 5158711 | Insoluble tannin preparation process, waste treatment process employing insoluble tannin and adsorption process using tannin There is disclosed an insoluble tannin preparation process, in which a tannin is first dissolved in an aldehyde aqueous solution. Then, ammonia is added to the solution to produce a precipitate, and the resulting precipitate is subjected to aging. The ins... | 10/27/1992 |
| 5156824 | Application of diphosphonic derivatives to cation exchange, new diphosphonic derivatives and production process therefor New diphosphonic derivatives are capable of extracting the uranium in phosphoric acid with a P205 content ranging from 10 to 50 per unit. The new diphosphonic derivatives have the following formula: ##STR1## wherein R is selected from the group consisting... | 10/20/1992 |
| 5130001 | Uranium isotope separation by continuous anion exchange chromatography A simple, low temperature process for separating uranium isotopes and producing substantially pure uranium isotope fractions from a crude uranium isotope-containing aqueous feed stock is provided. A uranium isotope-containing solution is fed to an anion e... | 07/14/1992 |
| 4968504 | Recovery of scandium and uranium The separation of uranium, iron and scandium is achieved by the following process wherein a material containing these values is dissolved in mineral acid to form an aqueous solution, thereafter, an iminodiacetic acid cationic ion exchange resin is used to... | 11/06/1990 |
| 4876036 | Process for the extraction of cations and application thereof to the treatment of aqueous effluents A process for the extraction of cations from an aqueous effluent. An effective quantity of at least one polymer or copolymer, which is physically or chemically crosslinked, is introduced into the aqueous effluent. The polymer or copolymer is based on one ... | 10/24/1989 |
| 4832924 | Process for producing uranium oxides The present invention provides a process for producing a uranium oxide by dissolving a yellow cake in sulfuric acid or hydrochloric acid, bringing the obtained solution into contact with a chelating resin of diaminocarboxylic acid type and subjecting the ... | 05/23/1989 |
| 4808316 | Process for treating waste water containing uranium and fluorine A process for treating a waste water containing uranium and fluorine comprises a neutralizing precipitation step wherein slaked lime is added to the waste water containing uranium and fluorine and precipitate thus formed in separated and removed, and an a... | 02/28/1989 |
| 4803057 | Continuous chromatographic separation of uranium isotopes A process for continuously separating uranium isotopes by an oxidation-reduction reaction using an anion exchanger comprising the steps of feeding an eluant containing a deactivated oxidizing agent and a deactivated reducing agent to an anion exchanger to... | 02/07/1989 |
| 4797264 | Recovery of metals adsorbed on chelating agents Chelating agents on which metals such as uranium have been adsorbed are brought into contact with an eluent of aqueous solution containing reducing agents and basic compounds, until the metals are eluted. The elution is effected with large speed without d... | 01/10/1989 |
| 4786481 | Method for eluting a metal adsorbed on a chelating agent A method for eluting a metal adsorbed on a chelating agent with an eluent, which comprises using as the eluent an aqueous solution containing a water-soluble inorganic sulfide and a basic compound at concentrations of 0.005 to 3N and 0.1N or more, respect... | 11/22/1988 |
| 4769180 | Process for separately recovering uranium and hydrofluoric acid from waste liquor containing uranium and fluorine A process for separately recovering uranium and hydrofluoric acid from a waste liquor containing uranium and fluorine comprises a neutralizing precipitation step wherein a magnesium compound is added to the waste liquor containing uranium and fluorine to ... | 09/06/1988 |
| 4765909 | Ion exchange method for separation of scandium and thorium A method for a quantitative separation of scandium from thorium comprises adsorption of both metals on a cation exchange resin followed by selective elution of scandium with an acidic solution of a chelating agent followed by the elution of thorium by a s... | 08/23/1988 |
| 4748008 | Process for separating uranium isotopes by oxidation-reduction chromatography In a process for continuously separating uranium isotopes, 235 U and 238 U, by oxidation-reduction chromatography using a column of an anion exchanger, the separation of uranium isotopes and the regeneration of the oxidizing agent an... | 05/31/1988 |
| 4740359 | Process for the recovery of uranium values in an extractive reprocessing process for irradiated nuclear fuels An organic extraction phase, containing fission materials uranium and plutonium, as well as a minor amount of fission- and corrosion-products, from an extraction step or from a purification step of a nuclear fuel reprocessing process is treated with an aq... | 04/26/1988 |
| 4720422 | Material for collecting radionuclides and heavy metals A material is, herein disclosed for collecting radionuclides and heavy metals that comprises an acrylic fiber element having MnO2 and/or ferrocyanide compound of the formula K2 MII [Fe(CN)6 ] (wherein MII | 01/19/1988 |
| 4696768 | Process for the separation of large amounts of uranium from small amounts of radioactive fission products, which are present in basic, aqueous carbonate containing solutions A process for separating large amounts of uranium from small amounts of radioactive fission products, which are present in basic, aqueous carbonate containing solutions, by means of a basic, organic anion exchanger. Uranium values present as uranykl-carbo... | 09/29/1987 |
| 4683124 | Actinide recovery process Process for the removal of plutonium polymer and ionic actinides from aqueous solutions by absorption onto a solid extractant loaded on a solid inert support such as polystyrenedivinylbenzene. The absorbed actinides can then be recovered by incineration, ... | 07/28/1987 |
| 4663086 | Process for bituminizing radioactive waste constituted by cation and/or anion exchange resins The invention relates to a process for bituminizing radioactive waste constituted by cation and/or anion exchange resins. This process comprises a resin pretreatment stage performed so as to replace the H+ ions of the cation exchange resins by ions... | 05/05/1987 |
| 4661327 | Recovery of mineral values using magnetically susceptible ion exchange agent A novel ion exchange agent comprises a magnetically susceptible core or nucleus surrounded by a coating of plastic or resin ion exchange material, preferably a microreticular coating immediately surrounding the magnetically susceptible core and a macroret... | 04/28/1987 |
| 4655936 | Microbiological control in uranium processing A method of improving the recovery of U3 O8 from circulating aqueous leach fluids used to extract uranium from its ores in underground uranium fields, which fields are made up of a series of injection and producing wells, which aqueo... | 04/07/1987 |
| 4622366 | Uranium adsorbing material and process for preparing the same A uranium adsorbing material made of a graft polymer with a graft ratio of 20 to 100% which contains amidoxime groups and cation exchange groups in a molar ratio of 1:1 to 20:1 and a process for preparing said material are herein disclosed.... | 11/11/1986 |
| 4619744 | Recovery of heavy metals from aqueous solutions Process for the recovery of heavy metals from aqueous solution by reaction with soluble, functionally-substituted polymer upon which the heavy metal loads, and optionally crosslinks by interaction with the heavy metals present in solution. Metals includin... | 10/28/1986 |
