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  • Springer  (23)
  • Nature Publishing Group
  • 2000-2004  (14)
  • 1975-1979  (3)
  • 1960-1964  (5)
  • 1930-1934  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Hf-sputtered indium oxide films doped with tin (1978)
    Springer
    Applied physics 16 (1978), S. 239-246 
    Details
    ISSN: 1432-0630
    Keywords: 72.40 ; 73
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Indium oxide films doped with tin (ITO-films) have been hf-sputtered from an 80 at-%In2O3/20 at-%SnO2 target onto glass substrates. The sputter atmosphere contained mainly argon (10−2Torr) with addition of oxygen (0≦p O 2≦2·10−2Torr). The sputtered films aren-conductors. The conductivity and density of charge carriers depend on the oxygen content of the sputter gas. They could be varied by two orders of magnitude. In air or in oxygen atmosphere the films oxidize at the surface and for a certain depth beneath the surface, thus decreasing the conductivity. The Hall mobility of the sputtered films is smaller (≈10 cm2V−1 s−1) than one observes at ITO films produced by CVD sparaying or other methods. The conductivity of as sputtered films approached maximum values of about 1000Ώ−1cm−1.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00885119
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  • 2
    Electronic Resource
    Electronic Resource
    3 C 273 : A Star-Like Object with Large Red-Shift (1963)
    [s.l.] : Nature Publishing Group
    Nature 197 (1963), S. 1040-1040 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE only objects seen on a 200-in. plate near the positions of the components of the radio source 3(7 273 reported by Hazard, Mackey and Shimmins in the preceding article are a star of about thirteenth magnitude and a faint wisp or jet. The jet has a width of 1*2* and extends away from the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1971040a0
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  • 3
    Electronic Resource
    Electronic Resource
    Immunitätszüchtung bei Tabak (1934)
    Springer
    Naturwissenschaften 22 (1934), S. 557-559 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01495111
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  • 4
    Electronic Resource
    Electronic Resource
    Buchbesprechungen (1960)
    Springer
    Theoretical and applied genetics 30 (1960), S. 258-264 
    Details
    ISSN: 1432-2242
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00713411
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  • 5
    Electronic Resource
    Electronic Resource
    Strong impact of the electron-photon matrix element on angle-resolved photoelectron spectra of Sr 2 CuO 2 Cl 2 (2001)
    Springer
    The European physical journal 23 (2001), S. 69-77 
    Details
    ISSN: 1434-6036
    Keywords: PACS. 74.72.Jt Other cuprates – 79.60.-i Photoemission and photoelectron spectra – 74.25.Jb Electronic structure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: In recent years insight has been gained into the electronic structure of layered cuprates using angle-resolved photoelectron spectroscopy. In many of these studies it is assumed that the electron-photon matrix element follows the trends set by the atomic photoionization cross sections and does not influence lineshape, dispersion and the k-dependence of the spectral intensity. In this study using Sr2CuO2Cl2 as an example it will be shown that the electron-photon matrix element can have a strong impact on both strength and shape of a feature in an angle-resolved photoelectron spectrum of a layered cuprate which can strongly affect information on character and the momentum-dependence of the energy and spectral weight of a state deduced from the spectra. The results of this study put an emphasis on the need to employ the whole parameter range of the ARPES method to get reliable information on the spectral function of cuprates for which purpose synchrotron radiation is an uniquely suited tool.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100510170083
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  • 6
    Electronic Resource
    Electronic Resource
    Buchbesprechungen (1964)
    Springer
    Colloid & polymer science 198 (1964), S. 101-111 
    Details
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01499465
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  • 7
    Electronic Resource
    Electronic Resource
    Defect generation in polycrystalline Cu(In,Ga)Se2 by high-energy electron irradiation (2000)
    Springer
    Applied physics 70 (2000), S. 677-680 
    Details
    ISSN: 1432-0630
    Keywords: PACS: 61.80.Fe; 61.82.Fk; 84.60.Jt
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract. We investigate the degradation of ZnO/CdS/ Cu(In,Ga)Se2 heterojunction solar cells for space applications and the defect generation in polycrystalline Cu(In,Ga)Se2 thin films by irradiation with 1-MeV electrons with fluences φe up to φe=5×1018 cm-2. Notable degradation of the solar cell performance starts at fluences of φe=1017 cm-2 where the open circuit voltage decreases by about 5% while short circuit current and fill factor remain essentially unaffected. Thus, Cu(In,Ga)Se2 solar cells withstand electron fluences which are higher by one order of magnitude or more when compared to other technologies. A model describes the absolute open circuit voltage loss considering the increase of space charge recombination by electron irradiation-induced defects. Defect analysis by admittance spectroscopy shows that acceptor defects with an energy distance of approximately 300 meV from the valence band are generated at a rate γ=0.017 (±0.01) cm-1.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003390050014
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  • 8
    Electronic Resource
    Electronic Resource
    Kompressionsverhalten isotroper Pulvermischungen (1979)
    Springer
    Pharmacy world & science 1 (1979), S. 1443-1450 
    Details
    ISSN: 1573-739X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Für die Kompressionsgleichung (s − a) (p + b) = C wurden die drei Hyperbelkonstanten a, b, und C interpretiert und ihre Abhängigkeit vom Mischungsverhältnis zweier Substanzen untersucht. Die Grö\e b wurde als Verformungsspannung bezeichnet, sie kann mit der Flie\grenze eines Materials in Beziehung gesetzt werden. In einer Tablettenrezeptur kann der Anteil an verformtem Arzneistoff mit Hilfe der Konstanten b abgeschätzt werden.
    Notes: Abstract The three hyperbolic constants a, b and C were interpreted for the compression equation (s − a) (p + b) = C. Their dependence upon the mixture ratio of two substances was investigated. The quantity b was designated as deformation strain, it can be related to the yield point of a material. The proportion of deformed drug in a tablet formulation can be estimated by means of the constant b.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02293483
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  • 9
    Electronic Resource
    Electronic Resource
    Nasal Epithelial Permeation of Thymotrinan (TP3) Versus Thymocartin (TP4): Competitive Metabolism and Self-Enhancement (2000)
    Springer
    Pharmaceutical research 17 (2000), S. 222-228 
    Details
    ISSN: 1573-904X
    Keywords: nasal absorption ; peptide absorption ; nasal metabolism ; aminopeptidases
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Purpose. To investigate concentration dependent permeabilities andmetabolism kinetics of thymotrinan (TP3) versus thymocartin (TP4)in nasal epithelium in vitro. Methods. Excised bovine nasal mucosa was used as an in vitro model.Permeabilities were studied in a diffusion chamber, metabolism kineticsin a reflection kinetics set-up. Studies were performed at various TP3and TP4 concentrations. The 3H-mannitol flux was measured to monitorjunctional permeability. Potential Ca2+-complexation was investigatedusing a Ca2+-selective electrode. Results. Permeability of TP3 was negligible at 0.1 and 0.2 mM andincreased drastically above 0.4 mM up to ∼2 × 10−5 cm s−1. In thepresence of 2 mM TP4 the TP3 permeabilites were significantly above(∼4 × 10−5 cm s−1) the level of TP3 without TP4, and TP3 metabolismwas totally inhibited. TP3 and TP4 showed a significant concentrationdependent effect on the permeability of 3H-mannitol. Ahyperosmolarity effect of the peptide solutions was excluded. Transepithelialelectrical resistance (TEER; ∼30 Ω cm2) was unchanged by either TP3 orTP4. At 1 mM TP3 the mucosal-to-serosal permeability was four timeshigher than serosal-to-mucosal, indicating enzyme polarization. Inreflection kinetics studies, TP3 degradation was slightly higher on themucosal than on the serosal side. TP3 and TP4 followed the samenon-linear metabolism kinetics. Conclusions. Increase in permeability at high TP concentrationsinvolves competitive enzyme saturation combined with self-enhancedparacellular permeation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1007529716926
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  • 10
    Electronic Resource
    Electronic Resource
    Zeitschriftenschau (1961)
    Springer
    Journal of pest science 34 (1961), S. 125-128 
    Details
    ISSN: 1612-4766
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02005701
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