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2013-7-15 · The reaction mechanisms were proposed based on an analysis of the surface mechanism and spectroscopic insights. The mechanism utilizing the oxide ion vacancies for O-2 and H-2 dissociation was proposed to describe the kinetics of the reaction over the reducible oxides SnO2 and CeO2.

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I sotopic analysis of plutonium reveals provenance of this radionuclide\, fo r example whether the plutonium burdens are associated with bo fallout o r are derived from other sources. The 238Pu/239+240Pu activity ratios vari ed from 0.02 ± 0.01 to 0.07 ± 0.02\, suggesting global fallout as the do minant source of Pu (0.03-0.05).

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2.2 Reduction in medium temperature region in BF The indirect reductions of zinc compounds with carbon monoxide is mainly governed by the reaction FeO+CO=Fe+CO2 [5]. There is a great deal of softening-melting material containing iron monoxide and some free silicon dioxide. Thus zinc compounds can interact with iron monoxide or silicon dioxide.

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It was a high-temperature (700°C), graphite-moderated, helium-cooled reactor with a Th/HEU fuel designed to operate at 842 MWth (330 MWe). The fuel was in microspheres of thorium carbide and Th/U-235 carbide coated with silicon oxide and pyrolytic carbon to retain fission products.

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2015-2-2 · Analysis of H2O2: Titanyl ions Ti4+ react with H2O2 in the presence of NaN3 and create pertitanic acid with the absorption maximum at 407 nm [4]. 2. Analysis of NO2 : Nitrites NO2 react with Griess reagents and create azo-dye with the absorption maximum at 540 nm.