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Mostrando 13-14 de 14 artigos, teses e dissertações.
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13. Correlation between catalytic activity and bonding and coordination number of atoms and molecules on transition metal surfaces: Theory and experimental evidence
Correlation between catalytic activity and low-energy local electronic fluctuations in transition metals is proposed. A theory and calculations are presented which indicate that maximum electronic fluctuations take place at high-coordination metal sites. Either (i) atomically rough surfaces that expose to the reactant molecules atoms with large numbers of no
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14. Quantification of arabinitol in serum by selected ion monitoring as a diagnostic technique in invasive candidiasis.
D-Arabinitol was identified by mass spectrometry as a metabolite of Candida albicans and Candida tropicalis. For quantification, serum was deproteinized with acetone, the supernatant was evaporated to dryness, the silyl derivative was formed, and a portion was injected into a combined gas chromatograph-mass spectrometer system. Erythritol or 2-deoxy-galactit