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  • 123I-low-density lipoprotein  (1)
  • 78.90. + t  (1)
  • 81.60.Bn  (1)
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Materialart
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  • 1
    Digitale Medien
    Digitale Medien
    Physical and material aspects in using visible laser pulses of nanosecond duration for ablation (1996)
    Springer
    Applied physics 63 (1996), S. 123-131 
    Details
    ISSN: 1432-0630
    Schlagwort(e): 79.20.DS ; 81.90. + c ; 78.90. + t
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau , Physik
    Notizen: Abstract Interaction phenomena of 50 ns copper vapour laser pulses (λ = 511/578 nm) with matter are investigated. The basic ablation process is classified into four fundamental classes. On basis of this classification processing results are connected with specific material properties like the brittleness, the viscosity of the melt or the optical properties. Knowing these properties a prognosis of the expected fundamental process is possible. In order to generate a geometrically defined structure via ablation in a given material-specific process, strategies have to be developed. Typical examples for process strategies are given.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01567639
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Laser nitriding of iron: Nitrogen profiles and phases (1995)
    Springer
    Applied physics 61 (1995), S. 1-5 
    Details
    ISSN: 1432-0630
    Schlagwort(e): 61.80.Ba ; 52.75.-d ; 81.60.Bn ; 76.80
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau , Physik
    Notizen: Abstract Armco iron samples were surface nitrided by irradiating them with pulses of an excimer laser in a nitrogen atmosphere. The resulting nitrogen depth profiles measured by Resonant Nuclear Reaction Analysis (RNRA) and the phase formation determined by Conversion Electron Mössbauer Spectroscopy (CEMS) were investigated as functions of energy density and the number of pulses. The nitrogen content of the samples was found to be independent of the number of pulses in a layer of 50 nm from the surface and to increase in depths exceeding 150 nm. The phase composition did not change with the number of pulses. The nitrogen content can be related to an enhanced nitrogen solubility based on high temperatures and high pressures due to the laser-induced plasma above the sample. With increasing pulse energy density, the phase composition changes towards phases with higher nitrogen contents. Nitrogen diffusion seems to be the limiting factor for the nitriding process.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01538202
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
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  • 3
    Digitale Medien
    Digitale Medien
    Imaging of human atherosclerotic lesions using 123I-low-density lipoprotein (1986)
    Springer
    European journal of nuclear medicine 12 (1986), S. 291-292 
    Details
    ISSN: 1619-7089
    Schlagwort(e): Low-density lipoproteins ; Atherogenesis ; Imaging lesions ; 123I-low-density lipoprotein
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract In patients suffering from clinically manifest atherosclerosis autologous LDL-labelling has been done using 123I. This technique allows localization of areas with an increased LDL entry as well as a monitoring of kinetics. Normally, no tracer uptake can be seen in the vascular system. Positive camera images, however, can be obtained in pathological areas as early as 60 min after LDL-reinjection. Experimental data and morphological control reveal a very good correlation to the gamma-camera findings. The technique seems to be very promising for diagnosis in patients suffering from atherosclerosis and hyperlipoproteinemia.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00251990
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
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