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  • Finite Element  (2)
  • Alkylarylketones  (1)
  • Key words IL-10  (1)
  • 1
    ISSN: 1432-1238
    Schlagwort(e): Key words IL-10 ; HLA-DR ; Inflammation ; Sepsis ; Intensive care
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Objective: To assess the relationship between IL-10 release and anti-inflammatory response following blunt trauma. Design: Prospective longitudinal clinical study. Setting: Departments of trauma and anaesthetics in a university teaching hospital Patients: Forty-eight adult patients with a mean injury severity score of 14.5 (range 9–57) were prospectively studied following blunt trauma. Measurements and results: Venous blood samples were collected on arrival and at 16 and 24 h, and at 3, 5, and 7 days. Peripheral blood mononuclear cell (HLA-DR) expression on CD14 + monocytes was quantified by flow cytometry and serum IL-10 was assayed by ELISA. Anti-inflammatory response was defined as monocyte HLA-DR expression of less than 30 % of that seen in healthy controls. Serum IL-10 levels in trauma patients on arrival was significantly elevated, 70.0 [48.0–92.1, 95 % confidence interval, (CI)] compared to the control group, 3 (0–5) (P 〈 0.0001), and monocyte HLA-DR expression was significantly lower, 14.2 (12.1–16.3, 95 % CI), in patients versus 25.2 (22.4–28.1) in controls (P 〈 0.001). Patients with low HLA-DR expression (n = 14) had significantly higher serum IL-10 levels than those whose HLA-DR expression remained above 30 % of the control value (n = 34), (P 〈 0.038). In patients who developed sepsis (n = 11), serum IL-10 levels were greater on admission, [143.7 (80.2–207.2) pg/ml–1], and remained elevated during the study period compared with non-complicated patients, [50.16 (33.5–66.8) pg/ml–1]. Immediate IL-10 (2 h following trauma) was negatively correlated with simultaneous HLA-DR expression, (r = –0.49, P = 0.0005). Conclusion: These findings support the view that IL-10 release regulates monocyte HLA-DR expression and may be related to an anti-inflammatory response and development of sepsis following trauma.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Springer
    Chromatographia 26 (1988), S. 77-84 
    ISSN: 1612-1112
    Schlagwort(e): Supercritical fluid chromatography ; Retention indices ; Alkylarylketones ; n-Alkanes ; n-Alkylbenzenes ; Polystyrene-divinylbenzene
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Summary The application of alkylarylketones and n-alkanes as retention index scale standards in supercritical fluid chromatography has been examined using a packed polystyrene-divinylbenzene column. The two scales gave comparable results but the alkylarylketone scale gave comparable results but the alkylarylketone scale was considered to have a wider application as it could also be used when modifiers were added to the mobile phase. The changes in the retention indices of a number of aromatic test compounds were used to compare the selectivity of the separation under different temperature and pressure conditions and in the presence of modifiers.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Chichester : Wiley-Blackwell
    International Journal for Numerical Methods in Fluids 7 (1987), S. 1277-1297 
    ISSN: 0271-2091
    Schlagwort(e): Review Article ; Industrial Flow ; Finite Element ; Turbulent Flow ; k-ε Turbulence Model ; Engineering ; Engineering General
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Maschinenbau
    Notizen: This paper is an expanded version of that delivered at the recent Sixth International Symposium on Finite Element Methods in Flow Problems, Antibes, France. It begins by reviewing the role of the finite element method (FEM) in turbulent flow simulation during recent years. The difficulties in incorporating sufficiently general descriptions of turbulence (i.e. two-equation models) into successful finite-element-based Navier-Stokes codes are examined and analysed in some depth. Current progress by various workers in overcoming these difficulties is reviewed and, by concentrating on one particular approach, it is demonstrated that the FEM has now matured into a powerful and flexible tool for solving two-dimensional turbulent flows of industrial complexity. The applications presented highlight those features which render the FEM attractive in this field (viz., minimal false diffusion, arbitrary local refinement, boundary fitting capabilities and non-structured grids). Finally, the prospects and challenges for the future are briefly discussed. In particular, the urgency and difficulty of constructing a competitive three-dimensional capability which preserves these features is examined.
    Zusätzliches Material: 6 Ill.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    Chichester : Wiley-Blackwell
    International Journal for Numerical Methods in Fluids 4 (1984), S. 303-319 
    ISSN: 0271-2091
    Schlagwort(e): Finite Element ; Turbulent Flow ; Engineering ; Engineering General
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Maschinenbau
    Notizen: Although the finite-element (FE) method has been successful in analysing complex laminar flows, a number of difficulties can arise when two-equation turbulence models (e.g. the k-∊ model) are incorporated. This work describes a particular FE discretization of the k-∊ model and reports its performance in recirculating flow. Severe problems encountered in attempts to obtain convergence of the numerical scheme are isolated and analysed, and methods by which the problems can be overcome are suggested.Insight gained in this work has enabled a practical turbulent flow FE code to be constructed which is robust and efficient. This code is the subject of a further paper.
    Zusätzliches Material: 8 Ill.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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