Characterization of simulated vitrified highly active waste and its leachates by neutron activation

1987 ◽  
Vol 116 (2) ◽  
pp. 389-400 ◽  
Author(s):  
D. L. Moir ◽  
A. Chatt
Keyword(s):  
Neutron Activation ◽  
Highly Active ◽  
Active Waste

Characterization of Highly Active Waste Glasses Produced in a Hot Vitrification Pilot Plant

1989 ◽  
Vol 176 ◽  
Author(s):  
C. Cantale ◽  
J-P. Glatz ◽  
E.H. Toscano ◽  
A. Donato ◽  
M. Coquerelle ◽  
...  
Keyword(s):  
Chemical Analysis ◽  
Pilot Plant ◽  
Microstructural Analysis ◽  
Good Qualitative Agreement ◽  
Highly Active ◽  
Gel Layer ◽  
Dissolution Tests ◽  
Before And After ◽  
Active Waste

ABSTRACTFully radioactive waste glasses produced in a hot vitrification pilot plant were characterized in the hot cells at the JRC-Karlsruhe. The work includes microstructural analysis before and after leaching by SOXHLET extractors (MCC-5S), as well as leachate and gel-layer chemical analysis. Partial devitrification, with phases enriched in metals and rare earths, was observed in one of the products. In the gel layers formed during the dissolution tests, enrichment in some elements (Fe,Ti,Gd,Nd,Ce) and depletion in glass constituents (Si,B,K,Ba,Ca,Na) as well as in Mo and Cs, were determined. This was in good qualitative agreement with the leachate chemical analysis.

Characterization of the HIV-1 Specific Humoral Immune Response During Highly Active Antiretroviral Therapy (HAART)

2001 ◽  
Vol 28 (5) ◽  
pp. 405-415 ◽  
Author(s):  
Mary Kate Morris ◽  
David A. Katzenstein ◽  
Dennis Israelski ◽  
Andrew Zolopa ◽  
R. Michael Hendry ◽  
...  
Keyword(s):  
Immune Response ◽  
Antiretroviral Therapy ◽  
Humoral Immune Response ◽  
Highly Active Antiretroviral Therapy ◽  
Humoral Immune ◽  
Highly Active ◽  
Hiv 1

Neutron Activation Analysis and Material Characterization of Modern Urban Materials

2020 ◽  
Author(s):  
D. Ospina ◽  
J. Baciak ◽  
J. Nino ◽  
J. Nimmagadda ◽  
M. Benjamin ◽  
...  
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Material Characterization

Synthesis and characterization of γ-Fe2O3@SiO2–(CH2)3–PDTC–Pd magnetic nanoparticles: a new and highly active catalyst for the Heck/Sonogashira coupling reactions

2019 ◽  
Vol 43 (23) ◽  
pp. 8930-8938 ◽  
Author(s):  
Zahra Tashrifi ◽  
Saeed Bahadorikhalili ◽  
Hossein Lijan ◽  
Samira Ansari ◽  
Haleh Hamedifar ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Active Catalyst ◽  
Synthesis And Characterization ◽  
Coupling Reactions ◽  
Sonogashira Coupling ◽  
Highly Active ◽  
Novel Catalyst

A novel catalyst is synthesized based on the immobilization of palladium on γ-Fe2O3@SiO2–(CH2)3–PDTC nanoparticles and is used as a highly active catalyst for the Heck/Sonogashira coupling reactions.

scholarly journals H/D Exchange Under Mild Conditions in Arenes and Unactivated Alkanes with C6D6 and D2O Using Rigid, Electron-rich Iridium PCP Pincer Complexes

2020 ◽  
Author(s):  
Joel D. Smith ◽  
George Durrant ◽  
Daniel Ess ◽  
Warren Piers
Keyword(s):  
Hydrogen Isotope ◽  
Isotope Exchange ◽  
Room Temperature ◽  
Pincer Complexes ◽  
Synthesis And Characterization ◽  
Hydrogen Isotope Exchange ◽  
Mild Conditions ◽  
Highly Active ◽  
Pcp Pincer

<div>The synthesis and characterization of an iridium polyhydride complex (Ir-H4)</div><div>supported by an electron-rich PCP framework is described. This complex readily loses molecular</div><div>hydrogen allowing for rapid room temperature hydrogen isotope exchange (HIE) at the hydridic</div><div>positions and the α-C-H site of the ligand with deuterated solvents such as benzene-d6, toluene-d8</div><div>and THF-d8. The removal of 1-2 equivalents of molecular H2 forms unsaturated iridium carbene</div><div>trihydride (Ir-H3) or monohydride (Ir-H) compounds that are able to create further unsaturation</div><div>by reversibly transferring a hydride to the ligand carbene carbon. These species are highly active</div><div>hydrogen isotope exchange (HIE) catalysts using C6D6 or D2O as deuterium sources for the</div><div>deuteration of a variety of substrates. By modifying conditions to influence the Ir-Hn speciation,</div><div>deuteration levels can range from near exhaustive to selective only for sterically accessible sites.</div><div>Preparative level deuterations of select substrates were performed allowing for procurement of</div><div>>95% deuterated compounds in excellent isolated yields; the catalyst can be regenerated by</div><div>treatment of residues with H2 and is still active for further reactions.</div>

Synthesis and Electrooptic Characterization of a Novel Highly Active Indoline Nitroazobenzene Methacrylate Copolymer

1994 ◽  
Vol 6 (5) ◽  
pp. 611-613 ◽  
Author(s):  
Iain McCulloch ◽  
Hong-Tai Man ◽  
Brian Marr ◽  
C. C. Teng ◽  
Kigook Song
Keyword(s):  
Highly Active ◽  
Methacrylate Copolymer
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