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  • 5-Hydroxymethyl-2-furfuraldehyde  (1)
  • Electron tunneling  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Electron tunneling in oxide superconductors (1994)
    Springer
    Journal of superconductivity 7 (1994), S. 381-385 
    Details
    ISSN: 1572-9605
    Schlagwort(e): Electron tunneling ; superconducting oxides ; energy gap ; degradation in oxide superconductors
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Elektrotechnik, Elektronik, Nachrichtentechnik , Physik
    Notizen: Abstract Electron tunneling experiments in very well-characterized polycrystalline samples of Ba1−xKxBiO3 and Bi2Sr2Ca2Cu3O10−δ show very clear features of the energy gap. The energy gap 2Δ and the ratio 2Δ/K B T c were determined. In the Ba1−xKxBiO3 compound we also study the behavior of the tunneling conductance in the normal state.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00724573
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    An enhanced liquid chromatographic method for 5-hydroxymethylfurfural determination in UHT milk (1992)
    Springer
    Chromatographia 33 (1992), S. 45-48 
    Details
    ISSN: 1612-1112
    Schlagwort(e): Column liquid chromatography ; Heat-treated milk ; Milk quality indicators ; 5-Hydroxymethyl-2-furfuraldehyde
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Summary An enhanced method of HPLC for the determination of 5-Hydroxymethyl-2-furfuraldehyde (HMF) in fluid milk was perfected. Its resolving capacity permitted the specific separation of this compound. The real concentration (μmol/l) of HMF was determined and not the HMF value, as in the colorimetric analysis, where an intermediary coloured compound (HMF-TBA) is utilised. The optimum pH condition (pH=4.0–4.2) for the mobile phase to prevent overlapping between the HMF peak and the peaks of the other compound (α and β) that coeluted with the HMF and also the optimum organic solvent content (3% or 7%) were established. This is a sensitive, quick and safe method for the determination of HMF in fluid milk.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02276850
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
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