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  • 34.50.Fa  (1)
  • Erfassung von auf Plastikfolien getrennten Substanzen  (1)
  • Life Sciences (general)  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Delta-electron emission in fast heavy ion — atom collisions: observations of new phenomena and breakdown of common scaling laws (1992)
    Springer
    The European physical journal 22 (1992), S. 713-721 
    Details
    ISSN: 1434-6079
    Keywords: 34.50.Fa ; 34.80.Kw
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Double differential cross sections for the emission of Delta-electrons have been measured in fast uranium-rare gas collisions. The well-known Binary Encounter peak reveals unexpected structures for certain observation angles and its intensity increases towards smaller angles, which is in contradiction to results and scaling laws obtained by experiments with light ion impact. The observed dependencies are fairly well described by recent calculations in the framework of IA and CTMC. From systematic experimental as well as theoretical studies we can derive that the potential of the partially stripped projectile ion gives rise to rainbow and glory scattering of the target electron in the field of the projectile. The rainbow scattering is observed in the laboratory frame as pronounced interference structures, whereas the glory scattering is responsible for the steep increase of the cross sections for binary-encounter electrons towards small laboratory ejection angles. The observed effects have a dramatic influence on the commonq 2 scaling laws derived from experiments with light ions. Furthermore, since the binary-encounter electrons ejected at forward angles have approximately twice the projectile velocity, these new phenomena have an important influence on the electronic stopping power of heavy ions and therefore have to be taken into account for the investigation of radiation damage by these ions e.g. in biological matter.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01437253
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Polarographische Erfassung von auf DC-Plastikfolien getrennten Substanzen (1976)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 279 (1976), S. 257-261 
    Details
    ISSN: 1618-2650
    Keywords: Chromatographie, Dünnschicht/Polarographie ; Erfassung von auf Plastikfolien getrennten Substanzen
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Auf DC-Plastikfolien getrennte Substanzen lassen sich mit guter Genauigkeit (Wiederfindungsraten 〉 95 %) in Gegenwart des Folienmaterials gleichspannungspolarographisch durch Reduktion an der Hg-Tropfelektrode bestimmen. Die von den Leuchtpigmenten abgegebenen Zn-Ionen müssen vor der Registrierung der i-E-Kurven durch ÄDTA maskiert werden.
    Notes: Abstract Organic compounds with polarographically active groups can be determined after separation by thin-layer chromatography on flexible polyester film by means of dc polarography in the presence of the foil. Heavy metal cations, such as Zn2+, derived from the fluorescent material of the stationary phase must be masked by complex formation with EDTA before the current-voltage curve is recorded. Recovery is 〉 95%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00430876
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    5th Leipzig symposium on biotechnology december 10-13, 1990 (1991)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 11 (1991), S. 183-183 
    Details
    ISSN: 0138-4988
    Keywords: Life Sciences ; Life Sciences (general)
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/abio.370110224
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    Paper (German National Licenses)
    Fulltext
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