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  • 1
    Digitale Medien
    Digitale Medien
    Springer
    Virchows Archiv 369 (1976), S. 269-282 
    ISSN: 1432-2307
    Schlagwort(e): Serum sickness ; Glomerulonephritis ; Hypercellularity ; Mesangiolysis
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Electron microscopic analysis was performed on the development of irreversible glomerular distortion in experimental serum sickness nephritis in the rabbit. In the animals showing transient albuminuria, glomerular hypercellularity was due to the accumulation of monocytes and polymorphonuclear leukocytes and was seen to recover to nearly normal glomerulus. In this condition the glomerular structure was observed to be well preserved throughout the inflammation. In contrast, in the animals showing persistent proteinuria, a disorganizing process was found in their glomeruli. Mesangial disintegration resulted in collapsed scarring or circumferential mesangial interposition of the glomeruli. Extracapillary exudation, sometimes with the rupture of the glomerular basement membrane, was often associated with grannlomatous glomerular lesions or crescent formation. The results showed that the structural disintegration is a fundamental event in the development of progressive glomerulonephritis.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Springer
    Journal of statistical physics 66 (1992), S. 727-754 
    ISSN: 1572-9613
    Schlagwort(e): Fully developed chaos ; local Lyapunov exponent ; thermodynamics ; exact solutions ; first-order phase transitions ; entropy ; coexisting states
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Fluctuations in the divergence of nearby orbits are studied at a crisis point of chaos. A statistical-thermodynamic method for the description of the fluctuations is developed by using symbolic dynamics, which can explicitly write a relation between a fluctuation and reference orbit. The thermodynamics (the free energy and entropy) is exactly analyzed on a nonhyperbolic attractor of maps conjugate to the map:u→u/a for 0〈/u〈a andu→(1−u)/(1−a) fora⩽u⩽1. Te free energy has discontinuities in its slope. The entropy is directly calculated from the partition function. Then, it becomes clear that the collision of a chaotic attractor with a particular fixed point yields a singular local structure in the distribution of fluctuations. The existence of first-order phase transitions depends on the asymmetry of a map. It is shown that each of the coexisting states at the phase transition points is realized with the same probability in the thermodynamic limit.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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