288 Matching Results

Search Results

Advanced search parameters have been applied.
in subjects: "Radioisotope Production"  
Results: 1 - 24 next
open access

Production and quality control of iodine-123

Description: The various methods for production and quality control are discussed. The author feels the $sup 123$Xe-$sup 123$I generator is the best method of production. Preparation and use of $sup 123$I-labeled compounds are also considered. (LK)
Date: January 1, 1975
Creator: Lambrecht, R.M.; Kondo, K. & Wolf, A.P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Target design considerations for high specific activity [{sup 11}C]O{sub 2}

Description: In the routine preparation of {sup 11}C-labeled compounds through N-[{sup 11}C]-methylation using [{sup 11}C]H{sub 3}I, total masses are always higher than synthesis mass contribution, suggesting that the target system contributes carrier carbon to the final product mass. This conclusion prompted this evaluation of target materials and target design for [{sup 11}C]O{sub 2} production. Ultimately, one is faced with the sprospect of compromising between [{sup 11}C]O{sub 2} specific activity and t… more
Date: December 31, 1993
Creator: Ferrieri, R. A.; Alexoff, D. L.; Schlyer, D. J.; McDonald, K. & Wolf, A. P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Precipitation of cerium sulfate

Description: Cerium sulfate purified by D2EHPA in Semiworks can be precipitated by adjusting pH to between 1 and 2 in tank 6 with 50% caustic. The solution can then be transferred through tank 1 to tank 67, where sodium bisulfate is added to make the solution 0.5M sulfate. A stoichiometric amount (mole for mole) of 50% caustic is added to just neutralize the sodium bisulfate. The precipitate is digested one hour at 60 C, then filtered.
Date: January 27, 1964
Creator: Buckingham, J. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Recovery of germanium-68 from irradiated targets

Description: This invention is comprised of a process for selective separation of germanium-68 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, contacting the first ion-containing solution with a cationic resin whereby ions selected from the group consisting of molybdenum, niobium, technetium, selenium,vanadium, arsenic, germanium, zirconium and rubidium remain in a second ion-containi… more
Date: December 31, 1992
Creator: Phillips, D. R.; Jamriska, D. J. Sr. & Hamilton, V. T.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Application of Sephadex to radiochemical separations

Description: Heteropolymolybdic acid species of a variety of elements bind to Sephadex (dextran cross-linked by epichlorohydrin). Solution pH can be used as a variable to affect the formation of heteropolymolybdates and thus their affinity for Sephadex. Therefore this material may be used to chromatographically separate certain elements which have been reacted with molybdate in solution. In this paper we report the measurement of distribution coefficients on Sephadex for heteropolymolybdates of As, P, Ge, S… more
Date: April 1, 1994
Creator: Phillips, D. R.; Hamilton, V. T.; Jamriska, D. J. & Brzezinski, M. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

TIARA analysis of tritium inventory in Li{sub 2}O

Description: The TIARA code has been developed to predict tritium inventory in Li{sub 2}O breeder ceramic and to predict purge exit flow rate and composition under steady-state operating conditions. Inventory predictions are based on models for bulk diffusion, surface desorption, solubility and precipitation. Parameters for these models are determined from the results of laboratory annealing studies on unirradiated and irradiated Li{sub 2}O and from a limited number (2) of inventory data measured after in-r… more
Date: May 1, 1994
Creator: Billone, M. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Recent developments in zinc oxide target chemistry

Description: Zinc oxide targets irradiated with high energy protons at the Los Alamos Meson Physics Facility (LAMPF) contain a number of radioactive spallation products in quantities large enough to warrant recovery. This paper describes methods for recovering {sup 7}Be, {sup 46}Sc, and {sup 48}V from such targets and offers suggestions on possible ways to recover additional isotopes. The proposed methods are based on traditional precipitation and ion exchange techniques, are readily adaptable to hot cell u… more
Date: April 1, 1994
Creator: Heaton, R. C.; Taylor, W. A.; Phillips, D. R.; Jamriska, D. J. Sr. & Garcia, J. B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

[Studies on the interaction of blood components with ultra-smooth polymer surfaces]

Description: This report is in three parts, though each is briefly described data is provided. The three parts address (1) radioiodination of human thrombin and fibrinogen; (2) interaction of blood components with ultra- smooth polymer surfaces; and (3) initial studies of Tecoflex and treated Tecoflex cups with normal serum samples.
Date: April 17, 1989
Creator: Carlson, T. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Use of supercritical carbon dioxide fluid as a solvent for the purification of pet radiotracers

Description: We have identified superfluid chromatography (SFC) as a promising method which could offer advantages in radiotracer purification through rapid separation, as well as, improved recovery and purity of labeled product. Using SF CO{sub 2} as the mobile phase for chromatographic separation of labeled product would eliminate the need for solvent removal from product prior to delivery.
Date: December 31, 1993
Creator: Ferrieri, R. A.; Fowler, J. S. & Wolf, A. P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Process for strontium-82 separation

Description: The process is for the selective separation of Sr-82 and Sr-85 from a proton-irradiated Mo target. It includes dissolving the Mo in H2O2 to form a solution which is then passed through a cationic resin, whereby Mo, Nb, Tc, Se, V, As, Ge, Zr, Rb ions remain in the solution, while Rb, Zn, Be, Co, Fe, Mn, Cr, Sr, Y, Zr ions are adsorbed. The resin is contacted with an acid solution to remove the adsorbed ions, forming a second solution. The second solution is evaporated and the residue dissolved i… more
Date: December 31, 1991
Creator: Heaton, R. C.; Jamriska, D. J. Sr. & Taylor, W. A.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Processing of $sup 238$Pu and $sup 237$Np with macroporous anion exchange resin

Description: ' Dowex'' MSA-1 macroporous anion exchange was found to be superior to Dowex'' 1 gel-type resin for separation and purification of /sup 238/Pu and /sup 237/Np. Higher actinide loading per unit of resin is attained, and elution is accomplished in smaller volume. Crosscontamination of the products is lower with macroporous resin, and higher processing rates can be attained. Process performance with different lots of macroporous resin is more consistent than generally obtained with different lots … more
Date: November 1, 1973
Creator: Thompson, G. H. & Burney, G. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen