A5035035212- Radioactive element chemistry and processing
- Nuclear reactor physics and engineering
- Nuclear and radioactivity studies
- Nuclear Materials and Properties
- Nuclear Physics and Applications
- Extraction and Separation Processes
- Chemical Synthesis and Characterization
- Graphite, nuclear technology, radiation studies
- Particle accelerators and beam dynamics
- Porphyrin and Phthalocyanine Chemistry
- Particle Accelerators and Free-Electron Lasers
- Catalytic Processes in Materials Science
- Radiopharmaceutical Chemistry and Applications
- Catalysts for Methane Reforming
- Engineering Applied Research
- Geophysical Methods and Applications
- Risk and Safety Analysis
- Medical Imaging Techniques and Applications
- Ultrasonics and Acoustic Wave Propagation
- Synthesis and Properties of Aromatic Compounds
- Fuel Cells and Related Materials
- Superconducting Materials and Applications
- Mesoporous Materials and Catalysis
- Electrocatalysts for Energy Conversion
- Radioactive contamination and transfer
Argonne National Laboratory
2011-2021
Stanford University
2004-2014
Oregon State University
2009-2010
University of Delaware
2001
Haverford College
2001
University of Kansas
2001
SLAC National Accelerator Laboratory
1996-1999
Stanford Synchrotron Radiation Lightsource
1999
Kansas State University
1998
Northern Arizona University
1994
Delivery of NO to specific targets is important in fundamental studies and therapeutic applications. Various methods have been reported for delivery vivo vitro; however, there are few examples systems that reversibly bind NO. Reported herein the development a new polymer (P-1[Co(II)]) binds P-1[Co(II)] has significantly higher affinity compared O(2), CO(2), CO. The synthesized by template copolymerization consists porous methacrylate network, containing immobilized four-coordinate Co(II)...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMetallo-Network Polymers: Reversible CO Binding to an Immobilized Copper(I) ComplexJohn F. Krebs and A. S. BorovikCite this: J. Am. Chem. Soc. 1995, 117, 42, 10593–10594Publication Date (Print):October 1, 1995Publication History Published online1 May 2002Published inissue 1 October 1995https://pubs.acs.org/doi/10.1021/ja00147a030https://doi.org/10.1021/ja00147a030research-articleACS PublicationsRequest reuse permissionsArticle...
A thermodynamic model of the distribution Pu(IV) between aqueous solutions nitric acid and lithium nitrate 30 % (by volume) TBP in n-dodecane was developed. The mean activity coefficients hydrogen ion, water were calculated using Bromley's method coefficients. computation ratios is based on a critical evaluation speciation under solution conditions used. Five species, Pu4+, Pu(OH)3+, Pu(OH)22+, Pu(NO3)3+, Pu(NO3)22+, considered to be present (0.1 4) mol·L−1 HNO3. Because various extraction...
Argonne's Model for Universal Solvent Extraction (AMUSE) simulates multistage counter-current solvent extraction processes species of interest to spent nuclear fuel reprocessing; it is a model liquid–liquid unit operation. This work extends the from its original steady-state implementation include time-dependent description all interest. Major components this extension differential mass transfer term, interstage flow rates, and reaction network plutonium reduction. The term has been...
<sup>99</sup>Mo, the parent of widely used medical isotope <sup>99m</sup>Tc, is currently produced by irradiation enriched uranium in nuclear reactors. The supply this encumbered aging these reactors and concerns about international transportation proliferation. <b>Methods:</b> We report results for production <sup>99</sup>Mo from accelerator-driven subcritical fission an aqueous solution containing low uranium. predominately fast neutrons generated impinging high-energy electrons onto a...
Template copolymerization methods have been used to make materials for a wide variety of applications where site-specific analyte binding is desired. The structure the site often crucial efficient function material. We immobilized cobalt-containing template complexes in porous organic hosts, allowing use spectroscopy conveniently probe structure. Reported herein are results from X-ray diffraction and absorption (XAS) studies series monomers {[CoIII1(dmap)2][PF6] [CoIII2(1-MeIm)][PF6], 1...
Radioisotopes play important roles in numerous areas ranging from medical treatments to national security and basic research. Radionuclide production technology for applications has been pursued since the early 1900s both commercially nuclear science centers. Many isotopes are now routine used day-to-day procedures. Despite these advancements, research is accelerating around world improve existing methodologies as well develop novel radionuclides new applications. Electron linear...
An aluminium stabilized, thin superconducting solenoid is required for the central field of 1.5 T BABAR detector. The winding supported by an alloy outer cylinder, which provides hoop strength to coil. coil has dimensions 3 m in diameter and 3.7 length. current density graded meet uniformity requirements /spl plusmn/2%. A hexagonal flux return, comprised a barrel two end doors external path field. Additional material caps shield from beam line magnets. To accommodate muon detectors, are...
The presence of acetohydroxamic acid (HAHA), proposed as a holding-back compound for the PUREX process, significantly decreases extraction Pu by tri-n-butyl phosphate (TBP) due to formation strong Pu(IV)−hydroxamate complexes. From fitting experimental distribution ratios Pu, two Pu(IV) species were be present in organic phase. contribution Pu(NO3)4(TBP)2 is relevant only at very low concentrations HAHA or its absence, while under higher HAHA, mono- and diacetohydroxamate complexes,...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTViolently Twisted and Strained Organic Molecules: A Descriptor System for Simple Coronoid Aromatics with a Moebius Half-Twist Semiempirical Calculations on the Analogs of CoroneneRobert W. Zoellner, John F. Krebs, David M. BrowneCite this: J. Chem. Inf. Comput. Sci. 1994, 34, 2, 252–258Publication Date (Print):March 1, 1994Publication History Published online1 May 2002Published inissue 1 March...
Recovery and concentration columns were designed for separation of Mo from highly concentrated uranyl–sulfate solution. Molybdenum uptake on titania sorbent, uranium solutions, is superior to alumina enables use low-enriched (LEU, <20% U-235) 99Mo production. Compared enriched (HEU), LEU requires five times more produce the same amount Mo. Isotherm parameters examined Mo, Te, Tc. The VERSE (VErsatile Reaction SEparation) model was used generate profiles metal ion concentrations in determine...