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  • 1
    Electronic Resource
    Electronic Resource
    Effect of modified surface structure of impregnated polypropylene film on capacitor dielectric properties during thermal ageing (1998)
    Springer
    Electrical engineering 81 (1998), S. 271-274 
    Details
    ISSN: 1432-0487
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Description / Table of Contents: Übersicht Der Aufsatz stellt die Ergebnisse von Alterungsprüfungen an imprägnierten Polypropylen-Folien für Kondensatoren vor. Es werden die Temperaturabhängigkeit des QuotientenD der tan δ-Werte mit und ohne Polypropylen-Film bezogen auf die Alterung des Imprägniermittels, die Beziehung des FaktorsD mit dem Aromatenanteil des Imprägniermittels und die Zeitabhängigkeit der dielektrischen Festigkeit für die beiden Arten des Films behandelt. Der mögliche Mechanismus der Zerstörung des dielektrischen Systems des Kodensators wird angegeben.
    Notes: Contents The results of ageing tests of biaxialy oriented impregnated capacitor polypropylene films with modified and unmodified surface structure are presented in this paper. The temperature dependence of factorD=tan δ0 (where tan δ1 and tan δ0 relate to impregnating fluid aged with and without polypropylene film, respectively), the relationship between factorD and the aromatic content of impregnating fluid and time dependence of dielectric strength for both types of film are presented. The possible destroying mechanism of the capacitor dielectric system is given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01233279
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Effect of modified surface structure of impregnated polypropylene film on capacitor dielectric properties during thermal ageing (1998)
    Springer
    Electrical engineering 81 (1998), S. 271-274 
    Details
    ISSN: 1432-0487
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Description / Table of Contents: Übersicht Der Aufsatz stellt die Ergebnisse von Alterungsprüfungen an imprägnierten Polypropylen-Folien für Kondensatoren vor. Es werden die Temperaturabhängigkeit des Quotienten D der tan δ-Werte mit und ohne Polypropylen-Film bezogen auf die Alterung des Imprägniermittels, die Beziehung des Faktors D mit dem Aromatenanteil des Imprägniermittels und die Zeitabhängigkeit der dielektrischen Festigkeit für die beiden Arten des Films behandelt. Der mögliche Mechanismus der Zerstörung des dielektrischen Systems des Kodensators wird angegeben.
    Notes: Contents The results of ageing tests of biaxialy oriented impregnated capacitor polypropylene films with modified and unmodified surface structure are presented in this paper. The temperature dependence of factor D=tan δ 1/tan δ 0 (where tan δ 1 and tan δ 0 relate to impregnating fluid aged with and without polypropylene film, respectively), the relationship between factor D and the aromatic content of impregnating fluid and time dependence of dielectric strength for both types of film are presented. The possible destroying mechanism of the capacitor dielectric system is given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002020050050
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Resonant Raman studies of surface composition and structural ordering in laser-irradiated Hg1-xCdxTe (1998)
    Springer
    Applied physics 67 (1998), S. 317-322 
    Details
    ISSN: 1432-0630
    Keywords: PACS: 42.55P; 81.40Z
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: 1-x CdxTe for x=0.165 and x=0.18. The annealing was performed in air with a Nd:YAG laser tuned to the first harmonic. A pulse duration of 72 ns and irradiation energy densities of 270 and 400 mJ/cm2 were used. Information on both the structural ordering and the alloy composition in irradiated Hg1-xCdxTe was obtained by resonance Raman spectroscopy with laser photon energies of between 2.41 and 2.54 eV. The presented Raman spectra from annealed samples indicate structural disorder and a decrease in the degree of alloying as a result of Hg outdiffusion and segregation caused by laser-induced nonequilibrium melting and solidification. Moreover, a shift of the maximum resonant enhancement for the TO2, LO2, A, and LO1&TO1 modes in the case of a Hg0.82Cd0.18Te sample, annealed by 400 mJ/cm2 laser pulse, to higher photon energy points to an increase in the composition from x=0.18 to x?0.3.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003390050777
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Majority carrier mobility in ultra heavily doped n-type Si in the presence of defects and dislocations
    Amsterdam : Elsevier
    Solid State Electronics 36 (1993), S. 891-898 
    Details
    ISSN: 0038-1101
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0038-1101(93)90012-F
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Harmonic Bergman Functions on the Unit Ball in Rn (1999)
    Springer
    Acta mathematica hungarica 85 (1999), S. 81-96 
    Details
    ISSN: 1588-2632
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract We study harmonic Bergman functions on the unit ball B in Rn. Among our main results are: For the Bergman kernel Kα(x, y) of the orthogonal projection Pα of L2,α-1 onto the harmonic Bergman space l2,α-1 the following estimate holds: $$\left| {K_\alpha (x,y)} \right| = O\left( {\left| {x - y} \right|^{ - n + 1 - \alpha } } \right),{\text{ }}x \in B,{\text{ }}y \in \partial B$$ . The Bergman projection Pα is bounded for the range 1 〈 p 〈 ∞. Also, Pα maps L∞ onto the harmonic Bloch space B∞ and C0(B) onto the little harmonic Bloch space B0. The duals of the harmonic Bergman spaces lp,α-1 are calculated for all p 〉 0 and α 〉 0.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006620929091
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    Paper (German National Licenses)
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