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  • 1
    Electronic Resource
    Electronic Resource
    Über eine topologische und zahlentheoretische Anwendung von Hirzebruchs Spitzenauflösung (1979)
    Springer
    Mathematische Annalen 240 (1979), S. 69-96 
    Details
    ISSN: 1432-1807
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01428301
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  • 2
    Electronic Resource
    Electronic Resource
    Structure and closure mechanism of the human umbilical artery (1978)
    Springer
    European journal of pediatrics 128 (1978), S. 247-259 
    Details
    ISSN: 1432-1076
    Keywords: Umbilical artery ; Birth ; Neonatal ; Blood vessel ; Structure ; Closure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The structure of the fully-patent umbilical artery and rearrangement of its structural elements with postnatal closure were examined in 10 centimeter long umbilical cord segments which were double-clamped at different time intervals after delivery. The fully-patent umbilical artery consists of two main layers: an outer layer of circularly arranged smooth muscle cells and an inner layer which shows rather irregularly and loosely arranged cells embedded in abundant metachromatic ground substance. No predominantly longitudinal arrangements of cells and fibers reported by earlier investigators could be identified in the inner layer. Closure of the umbilical arteries is initiated by numerous localized contractions which are mainly formed by muscle cells of the outer circular layer. Ultimate closure of larger segments of the umbilical arteries is also mainly produced by contractions of the outer layer. In contrast, the inner layer (which is rich in ground substance) seems to serve mainly as a plastic tissue which can easily be shifted in an axial direction and then folded into the narrowing lumen to complete closure. Electron microscopy reveals that the cells of this layer represent rather poorly differentiated smooth muscle cells which contain only a few tiny myofilaments and can therefore hardly contribute actively to the process of closure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00445610
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  • 3
    Electronic Resource
    Electronic Resource
    The hyperfine structure in the electronic A 2E″←X 2E′ system of the pseudorotating lithium trimer (2001)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 115 (2001), S. 2590-2602 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Sub-Doppler laser spectroscopy of the A 2E″←X 2E′ band of Li3 shows well-resolved and characteristic hyperfine structures of rovibronic transitions which can be explained in all detail by the interplay between the underlying Fermi-contact interaction, the symmetry species of the rovibronic states and the Coriolis coupling of rotational and pseudorotational motions. Ab initio calculated electron spin densities reproduce the observed line splittings to within 3%. In this Jahn–Teller distorted molecule magnetic equivalence of identical nuclei is strictly valid only for rovibronic states of A symmetry. However, it also holds for rovibronic states of E symmetry if they are of pure A vibronic origin, and it is enforced for many E states of pure E vibronic origin by Coriolis coupling. In contrast, those transitions which involve states with dominant Kc=0 rotation functions and/or with strong vibronic E/A mixing show significant changes in the hyperfine patterns due to magnetic inequivalence, sometimes called "hyperfine doubling." © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1376631
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  • 4
    Electronic Resource
    Electronic Resource
    Theoretical investigation of the autoionization process in molecular collision complexes: He*(2 3S)+Li(2 2S)→He+Li++e− (2000)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 113 (2000), S. 1484-1491 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: A complete ab initio treatment is applied to the autoionization process in the He*(2s 3S)+Li(2s 2S) collisional complex. Feshbach projection based on orbital occupancy, implemented in a multireference configuration interaction (MRCI) code, defines the resonance state and provides the entrance channel potential curve as well as all pertinent information on the resonance–continuum coupling. The l-dependent coupling elements in local approximation are obtained by projecting a compact one-electron function, named Penning molecular orbital (PMO), onto the wave function of the ejected electron with proper energy. The continuum wave function is obtained by coupled channel calculations in the static-exchange approximation. A converged set of seven complex coupling matrix elements, used in the nuclear dynamics calculation based on a complex Numerov algorithm, fully describes the electron angular momentum transfer. The calculated angle-dependent spectra, as well as the total, angle-, and energy-integrated ionization cross sections agree well with available experimental data. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.481935
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  • 5
    Electronic Resource
    Electronic Resource
    Electrical characterization of vapor-phase-grown single-crystal ZnO (2002)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 80 (2002), S. 1340-1342 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Gold Schottky-barrier diodes (SBDs) were fabricated on vapor-phase-grown single-crystal ZnO. Deep-level transient spectroscopy, using these SBDs, revealed the presence of four electron traps, the major two having levels at 0.12 eV and 0.57 below the conduction band. Comparison with temperature-dependent Hall measurements suggests that the 0.12 eV level has a temperature activated capture cross section with a capture barrier of about 0.06 eV and that it may significantly contribute to the free-carrier density. Based on the concentrations of defects other than this shallow donor, we conclude that the quality of the vapor-phase-grown ZnO studied here supercedes that of other single-crystal ZnO reported up to now. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1452781
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  • 6
    Electronic Resource
    Electronic Resource
    Growth Kinetics of Porcine Lymphatic Organs during Early Postnatal Life (2003)
    Berlin, Germany : Blackwell Verlag GmbH
    Anatomia, histologia, embryologia 32 (2003), S. 0 
    Details
    ISSN: 1439-0264
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: During the critical early postnatal period, the development of lymphatic organs, being the major structural components of the immune system, progresses rapidly. In this context, the growth kinetics and growth rates of Peyer's patches, tonsilla veli palatini, lymphnodes (lc. mesentericum craniale and lc. bronchale), spleen and thymus were investigated in German landrace piglets from birth until 2 weeks of age. The weight of all these organs increased faster than body weight but regression analysis revealed remarkable differences in growth kinetics and growth rates. The lymphoepithelial organs (Peyer's patches, tonsilla veli palatini) had low growth rates at birth (∼10%/day) that increased continuously until 2 weeks, while lymphnodes and spleen exhibited constant high growth rates (∼40%/day). Small intestinal lymphnodes alone showed biphasic growth kinetics which could be attributed to colostrum absorption. The growth kinetics of the thymus included a point of inflexion at the end of the first week. The differences in growth kinetics and growth rates are discussed with regard to their immunobiological relevance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1439-0264.2003.00487.x
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  • 7
    Electronic Resource
    Electronic Resource
    Zur Struktur und Histochemie von Myoepithelzellen der apokrinen Hautdrüsen der Hauskatze (1978)
    Oxford, UK : Blackwell Publishing Ltd
    Anatomia, histologia, embryologia 7 (1978), S. 0 
    Details
    ISSN: 1439-0264
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0264.1978.tb00495.x
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  • 8
    Electronic Resource
    Electronic Resource
    Verteilung und Aktivitäten oxydativer Enzyme in den apokrinen Hautdrüsen des Schweines (1976)
    Oxford, UK : Blackwell Publishing Ltd
    Anatomia, histologia, embryologia 5 (1976), S. 0 
    Details
    ISSN: 1439-0264
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Mit Hilfe enzymhistochemischer Methoden konnte festgestellt werden, daß die wichtigsten Anteile der spokrinen Hautdrüsen des Hausschweiness deutliche Aktivitäten verschiedener oxydativer Enzyme besitzen
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0264.1976.tb00786.x
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  • 9
    Electronic Resource
    Electronic Resource
    2,6-Naphthalenediacrylic acid bis(2,4-dichlorophenyl) ester (1978)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 34 (1978), S. 2350-2351 
    Details
    ISSN: 1600-5740
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567740878008158
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  • 10
    Electronic Resource
    Electronic Resource
    Ein Beitrag zum Mechanismus der Photopolymerisation vom vier-Zentren-TVD (1978)
    Springer
    Colloid & polymer science 256 (1978), S. 712-712 
    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/BF01784483
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