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  • 78.65  (1)
  • Best. von Wasser in Methanol  (1)
  • Children  (1)
  • Springer  (3)
  • Blackwell Publishing Ltd
  • Blackwell Science, Ltd
  • 2000-2004
  • 1985-1989  (2)
  • 1980-1984
  • 1975-1979  (1)
  • 1955-1959
  • 1880-1889
Publikationsart
Schlagwörter
Verlag/Herausgeber
  • Springer  (3)
  • Blackwell Publishing Ltd
  • Blackwell Science, Ltd
Erscheinungszeitraum
  • 2000-2004
  • 1985-1989  (2)
  • 1980-1984
  • 1975-1979  (1)
  • 1955-1959
    • +
Jahr
  • 1
    Digitale Medien
    Digitale Medien
    Thermodesorption of ultrathin organic films studied by reflection (1986)
    Springer
    Applied physics 39 (1986), S. 173-181 
    Details
    ISSN: 1432-0630
    Schlagwort(e): 44.50 ; 78.65 ; 81.40
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau , Physik
    Notizen: Abstract Optical reflection measurements are described as a new and simple technique to measure thicknesses and thickness changes of ultrathin organic overlayers on inorganic support. The prime advantages are high sensitivity in thickness measurements (0.1–1 Å), applicability under varying environmental conditions, nondestructiveness, applicability on different supports and high time resolution. These features are assessed theoretically and experimentally studying Langmuir-Blodgett films on SiO2 and Au supports. These films, in this work prepared with the model compound arachidic acid, provide the salient feature of well-defined thicknesses in integer multiples of 26.7 Å. Application of the technique in thermodesorption experiments reveals distinguished binding states with binding energies (73–110 kJ/mol) depending on the counterion (Mg2+ or Cd2+) used in preparing the films and ratios of different states depending on thickness. The binding energy for the main component of multilayers (73 and 81 kJ/mol) with thickness larger than 100 Å is comparable to the heat of evaporation of bulk fatty acids. In addition an analytic expression between layer thicknesses and reflection is derived from the Fresnel equation.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00620732
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 2
    Digitale Medien
    Digitale Medien
    Nuclear medicine liver-function tests for pregnant women and children (1985)
    Springer
    European journal of nuclear medicine 11 (1985), S. 58-61 
    Details
    ISSN: 1619-7089
    Schlagwort(e): Children ; Diagnostic techniques ; Diseases ; Drugs ; Function tests ; Isotope applications ; Liver ; Metabolism ; Nitrogen-15 ; Pregnant women ; Stable isotopes ; Urine
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract A simple, non-invasive, non-radioactive liverfunction test is proposed. After an oral dose of 3 mg 15N-methacetin per kilogram body mass, the kinetics of 15N excretion via urine were characterized by the quotient of the amounts of 15N excreted in two successive urine samples (Q value). The stable nitrogen isotope 15N was found to be an excellent and easily detectable indicator of the sum of all methacetin metabolites present in urine. Alterations in the nature or ratio of methacetin metabolites due to liver diseases could not be found. From the investigation of 11 men, 3 pregnant women and 15 children, a clear difference was observed in Q values of healthy persons and patients suffering from liver-cell-activity diseases. The discriminating power of our new liver-function test is shown to be equivalent to that of the 14CO2 breath test.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00252133
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 3
    Digitale Medien
    Digitale Medien
    Bestimmung kleiner Wassergehalte in Methanol mittels Differentialthermoanalyse (DTA) (1977)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 286 (1977), S. 216-218 
    Details
    ISSN: 1618-2650
    Schlagwort(e): Best. von Wasser in Methanol ; Thermoanalyse, Differential ; 0,02–1 Mol-%, Vergleich mit anderen Verfahren
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Beschreibung / Inhaltsverzeichnis: Zusammenfassung Eine Methode zur Bestimmung kleiner Wassergehalte in Methanol (0,02–1 Mol-%) mit Differentialthermoanalyse (DTA) wird beschrieben. Die Wirksamkeit verschiedener Trocknungsverfahren wird untersucht. Das Verfahren wird im Vergleich mit anderen Wasserbestimmungsmethoden in organischen Flüssigkeiten diskutiert.
    Notizen: Abstract A method is described in order to determine small water contents in methanol (0.02–1 mol-%) by differential thermal analysis. The efficiency of different drying procedures is studied. The technique is discussed in comparison with other methods of water analysis in organic liquids.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01155590
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
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