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  • 1
    ISSN: 1437-1596
    Keywords: Alkalische Phosphatase, Schwangerschaftsnachweis an Blutspuren ; Blutspuren, Schwangerschaftsnachweis ; Schwangerschaftsnachweis an Blutspuren ; Spurenkunde, Schwangerschaftsnachweis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Law
    Description / Table of Contents: Zusammenfassung Die von Oya u. Mitarb. beschriebene quantitative Methode wurde modifiziert und erlaubt nun eine sichere, wenn auch nur qualitative Aussage zur Unterscheidung von venösem Schwangeren- und Nichtschwangerenblut an Blutspuren bis zu einem Alter von mindestens 19 Monaten bei einer Ausgangsmenge von 1–3 cm2 Fleckenstoff. Für Plazentablut genügt eine noch geringere Spurenmenge.
    Notes: Summary A quantitative method, described by Oya and coworkers was modified. In this way, venous blood from pregnant and nonpregnant women in blood stains can be reliably differentiated up to at least 19 months storage although as a qualitative test only. 1–3 cm2 of cloth stained with blood is needed and even less from placental blood stains.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    International journal of thermophysics 20 (1999), S. 1-18 
    ISSN: 1572-9567
    Keywords: diffusion ; forced Rayleigh scattering ; Fourier transform ; Ludwig–Soret effect ; polymer solutions ; stochastic excitation ; thermal diffusion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The holographic grating technique of thermal-diffusion forced Rayleigh scattering (TDFRS) utilizes the Ludwig–Soret effect to induce a concentration modulation within a binary liquid. The signal generation is described in terms of a linear response formalism, and the memory function for the concentration mode g(t) and its Fourier transform, the diffusion susceptibility, are measured by means of pseudostochastic random binary sequences with flat power spectra in combination with fast Fourier transform and correlation techniques. For polydisperse polymer solutions the individual modes contribute proportional to their concentration to g(t), contrary to photon-correlation spectroscopy, where the correlation function is dominated by the high molar mass components. Other advantages of stochastic TDFRS are time-scale delocalization of dust spikes and frequency multiplexing. Measurements are reported on monodisperse and bimodal polystyrene in toluene.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    International journal of thermophysics 16 (1995), S. 11-21 
    ISSN: 1572-9567
    Keywords: diffusion ; forced Rayleigh scattering ; holography ; polymer solution ; thermal diffusion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The transient grating technique of thermal diffusion forced Rayleigh scattering (TDFRS) has been employed to study translational and thermal diffusion of polystyrene in toluene. Different molar masses and concentrations below or slightly above (lie overlap concentrationc * have been investigated. The translational diffusion coefficients agree well with results obtained from photon correlation spectroscopy. Small remaining diferences can be attributed to sample polydispersity. The molar mass independence of the thermal diffusion coefficient is confirmed, and thermal diffusion and Soret coefficients are compared with data obtained from thermal field flow fractionation and diffusion cell experiments.
    Type of Medium: Electronic Resource
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