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  • Articles: DFG German National Licenses  (31)
  • 1995-1999  (28)
  • 1965-1969  (3)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Czechoslovak journal of physics 19 (1969), S. 1471-1479 
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A review of the possibilities for the chemical exploration of the central regions of the Earth is given, making use of the antineutrino flux produced by natural radioactive isotopes.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-055X
    Keywords: Schlüsselwörter Hemihepatektomie ; Hämodynamik ; Oxygenierung ; Lebervenenkatheter ; Key words Hemihepatectomy ; Hemodynamic ; Oxygenation ; Liver venous catheter
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract Objective: The aim of this study was to compare low dose dopamine and dopexamine with respect to of liver-venous oxygen saturation, oxygen delivery and – demand, liver function tests and cardiocirculatory effects in the reperfusion period during a hemihepatectomy operation with occlusion of the liver hilus. Methods: Twenty patients were studied in a randomised, doubleblind setting. They either received 2 µg/kg per min dopamine or 0.5 µg/kg per min dopexamine perioperatively. For monitoring purposes a pulmonary artery and a liver venous catheter were placed. At four different time points hemodynamic parameter were assessed and blood samples were drawn. Results: Significant changes between groups were found 5 min after opening the liver hilus for the cardiac index and the systemic oxygen delivery, as well as at the end of the operation for pulmonary shunt volume, which had increased more in the dopexamine group. No significant difference between liver venous oxygen saturation and liver function tests was found. Conclusion: Until more detailed studies concerning the influence of dopamine on the hepatic-splanchnic region during liver surgery are performed, dopexamine can not be considered superior to dopamine during these operations.
    Notes: Zusammenfassung Fragestellung: Gibt es einen Unterschied bezüglich der leber-venösen Sauerstoffsättigung, des Sauerstoffangebots und -verbrauchs, der Leberfunktion sowie der kardiozirkulatorischen Effekte während der Reperfusion zwischen niedrig dosiertem Dopamin und Dopexamin bei Leberteilresektionen mit Leberhilusokklusion? Methodik: 20 Patienten wurden randomisiert, doppelblind in zwei Gruppen eingeteilt und erhielten entweder 2 µg/kg/min Dopamin oder 0,5 µg/kg/min Dopexamin. Für das perioperative Monitoring wurden ein pulmonalarterieller- und ein Lebervenenkatheter gelegt. Zu vier Meßzeitpunkten wurden Parameter der Hämodynamik erhoben und Blut abgenommen. Ergebnisse: Ein signifikanter Unterschied zwischen den Gruppen bestand 5 min nach Eröffnung des Leberhilus in einem stärker angestiegenen Cardiacindex und systemischen Sauerstoffangebot sowie am OP-En-de in einem stärker angestiegenen pulmonalen Shuntvolumen in der Dopexamingruppe. Es gab keinen Unterschied bezüglich der leber-venösen Sauerstoffsättigung und der Leberfunktionsparameter. Schlußfolgerung: Bis weiterführende Untersuchungen mit differenzierter Betrachtung der Wirkung von Dopexamin bei leber-chirurgischen Eingriffen vorliegen, ist Dopexamin bei diesen Operationen gegenüber Dopamin nicht als überlegen zu betrachten.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 211 (1966), S. 22-23 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE extreme difficulties of interstellar space travel are well known1. It is a commonly accepted view that, apart from the technical difficulties involved, the laws of conservation of energy and momentum forbid the visiting of other planetary systems in the human life-span1. This article sets out ...
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-0495
    Keywords: Key words Geochemistry ; Porosity ; Radioactivity ; Radon
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract  A steady radon exhalation is assumed in most publications. In a village of North-East Hungary, however, high radon concentrations have been measured, differing strongly in neighbouring houses and varying in time, due to the interplay of geochemical phenomena.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Intensive care medicine 22 (1996), S. 1466-1467 
    ISSN: 1432-1238
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-1238
    Keywords: Key words Hydroxyethyl starch ; Modified fluid gelatin ; Chloride ; Anion gap ; Acid base ; Saline
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In ten piglets (body weight 8.2–11.6 kg), acid base, electrolyte and anion gap changes were investigated during almost total plasma replacement with hydroxyethyl starch (HES) and modified fluid gelatin (GEL) in saline solution using a cell saver autotransfusion technique. During the study, there were only moderate acid base changes, but marked disturbances in anion balance. At study end, the mean chloride concentration was significantly higher (mmol/l: normal values 97–108, HES 116 ± 1.5, GEL 108 ± 1.1, p 〈 0.01) and the mean anion gap was significantly lower in the HES group in comparison to the GEL group (mmol/l: normal values 5–14, HES 3 ± 1.7, GEL 11.9 ± 0.9, p 〈 0.01). It is concluded that plasma replacement with electroneutral HES, but not with negatively charged GEL, can lower the anion gap irrespective of the underlying disease. This can be misleading when the anion gap is used for differential diagnosis of metabolic acidosis in patients after large volume infusion of synthetic colloids.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' journal of analytical chemistry 361 (1998), S. 513-514 
    ISSN: 1432-1130
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' journal of analytical chemistry 365 (1999), S. 103-105 
    ISSN: 1432-1130
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract A method is presented for calculating the absorption spectrum, the film thickness and the index of refraction from IR reflection spectra. Considering real test conditions (partial incoherence, scattering) a routinely usable instrument was created with this direct calculation of the absorption spectrum, which provides a very good correspondence between the measurement and simulation also without any initial information about the expected spectrum. This method is applied to characterize hard coatings deposited on iron substrates by glow discharge assisted CVD processes with organic silicon and boron compounds as precursors. In addition to the qualitative microstructural characterization of these coatings, this method is suitable for a rapid, exact and non-destructive determination of the film thickness and the index of refraction.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' journal of analytical chemistry 365 (1999), S. 255-257 
    ISSN: 1432-1130
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Reinforcement effects in composites are widely influenced by fibre coatings. A detailed understanding of their microstructure and chemical composition is of great interest. Boron nitride films were deposited continuously on fibre rovings of various ceramics in CVD reactors of vertical as well as horizontal position. XPS depth profilings show that the film compositions are close to stoichiometric BN with carbon and oxygen impurities in the range of 10 at%. Cross-sections of separated fibres were investigated by HREM and TEM diffraction. All BN films are hexagonal turbostratic. The (002) layers with an increased distance (about 0.36 nm) showed a mean stacking sequence near to graphite and a characteristic orientation to the fibre in the interface region. We assume the gas flow type and hence the exchange rate of matter and energy determines the film structure in this region. With increasing film thickness the (002) layers fold randomly in all directions or form nanocrystals at elevated temperatures.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' journal of analytical chemistry 358 (1997), S. 333-334 
    ISSN: 1432-1130
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Thin films of silicon carbide with codeposited elemental silicon were prepared by chemical vapor deposition (CVD). In a second CVD-process a thin titanium layer was deposited on the SiC(Si) basic layer. The solid state reaction between titanium and the codeposited silicon can be observed by X-ray diffractometry. A helpful analytical method for the observation of the growth of the reaction products is grazing incidence X-ray diffractometry. Various diffraction patterns of titanium silicides can be obtained by decreasing incidence angles.
    Type of Medium: Electronic Resource
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