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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Electrical engineering 55 (1972), S. 32-43 
    ISSN: 1432-0487
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Description / Table of Contents: Contents The computer program described in this report permits computation of transient and stationary processes in static, converter networks. For this purpose, the structure of the network with the associated thyristors, diodes, resistors, inductances capacitances, input voltages and controls is formalised using simple notation. From this informations the differential equations, which are valid in each state of the network, are generated automatically by an internal procedure. The results are displayed as plotted curves. The paper contains the results from some examples which were computed with this program.
    Notes: Übersicht Es wird ein Rechenprogramm erläntert, mit dem beliebige Stromrichterschaltungen auf dem Digitalrechner nachgebildet werden. Durch einen übersichtlichen Datensatz wird die zu untersuchende Schaltung mit ihren Thyristoren, Dioden, Widerständen, Induktivitäten, Kapazitäten, Spannungsquellen und Reglern beschrieben. Die Aufstellung der Differentialgleichungen erfolgt programmintern. Die Ergebnisse können als Oszillogramme in beliebiger Anordnung auf einem digitalen Zeichengerät ausgegeben werden. Die Funktionsweise des Berechnungsverfahrens wird an Hand von Beispielen erläutert.
    Type of Medium: Electronic Resource
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  • 2
    facet.materialart.
    Unknown
    Berlin : Periodicals Archive Online (PAO)
    Kant-Studien. 63:3 (1972) 353 
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 13 (2001), S. 245-253 
    ISSN: 1434-6079
    Keywords: PACS. 61.46.+w Clusters, nanoparticles, and nanocrystalline materials – 78.40.-q Absorption and reflection spectra: visible and ultraviolet – 78.66.-w Optical properties of specific thin films, surfaces, and low-dimensional structures
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: The size evolution of the surface plasmon resonance was investigated for free and embedded silver particles between about 2 to 10 nm in size. The crystal lattice of such particles as analyzed by high resolution electron microscopy show linear contraction with reciprocal particle size. Based on this, a model was presented by combining the lattice contraction of particles and the free path effect of electrons to predict the size evolution of the resonance. The results reveal a contribution of the lattice contraction to the resonance shift according to a roughly linear relation that changes slightly with particle radius (〉 1.0 nm) and surrounding media. This surface plasmon resonance shift proceeds linearly with reciprocal size for Ag particles in vacuum and argon, but for Ag particles embedded in glass it appears to be independent of the radius down to nearly 1 nm. All predictions are quantitatively compared to previously reported experimental data and a good agreement is obtained. An unusual red-shift observed for Ag particles in glass may be attributed to a thermal expansion mismatch induced lattice dilatation.
    Type of Medium: Electronic Resource
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