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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Applied physics 70 (2000), S. 587-591 
    ISSN: 1432-0649
    Keywords: PACS: 42.65.An; 78.20.Ci; 78.40.Fy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. We report a simplified Z-scan technique based on a study on the symmetric features of a typical Z-scan curve. The contributions from the two-photon absorption (TPA) and the nonlinear refraction (NLR) are easily separated from a closed-aperture Z-scan curve using this method. And the determination of the two nonlinearities is simplified and unambiguous. We demonstrate this method on ZnSe, CdS, and ZnTe semiconductors with 120-fs laser pulses. And the influence from the uncertainty of the focal plane (Z=0) position is discussed. It is also found that the TPA coefficient can be obtained independently without knowing the exact location of the focal point.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    European journal of plastic surgery 23 (2000), S. 28-31 
    ISSN: 1435-0130
    Keywords: Key words Burns ; Acute-phase proteins ; Inflammatory reaction ; Trauma response ; Immune system
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Transport proteins and acute-phase proteins, including complement factors C3 and C4, immunoglobulin A (IgA), IgM, albumin (ALB), prealbumin (PAB), transferrin (TRF), ceruloplasmin (CER), haptoglobin (HAG), and alpha antitrypsin (AAT), were examined in 29 patients with severe burns with a total burn surface area (TBSA) ranging from 30% to 97% (mean, 50.03%±21.16%). Samples from each patient were obtained at days 2, 7, 14, and 21 postburn and were analyzed using a 3M 300 special automatic analyzing system (Sanofi, France). A population of normal individuals served as controls. Statistical analyses were performed using multivariate and regression analyses. The postburn values of C3, C4, PAB, ALB, TRF, and CER were significantly lower compared to controls (P〉0.01). Slow postburn recovery was observed for C3 and C4, which was negatively correlated with burn severity. TAF, TAB, and ALB values decreased significantly within the first week postburn (P〈0.01); TAF, PAB, and ALB values demonstrated a steady recovery between days 14 and 21 postburn. The recovery was negatively correlated to the severity of the burns. IgA and IgM markedly decreased after 2 days postburn (P〈0.01). After the initial decrease, the levels of IgM slowly increased, whereas the levels of IgA remained depressed for the first postburn week. The levels of AAT rose significantly throughout the entire study period and were positively correlated with the severity of the burns (P〈0.01). This study demonstrates a pattern of certain reactive/acute-phase proteins in the postburn period. It can be concluded that severe burns directly affect the production of serum levels of acute-phase proteins, thereby impairing important physiological functions such as the immune system, protein transportation, metabolism, and repair processes.
    Type of Medium: Electronic Resource
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