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  • 11
    Electronic Resource
    Electronic Resource
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 37 (1981), S. 1017-1023 
    ISSN: 1600-5740
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 12
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 313 (1983), S. 369-370 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract It is shown how for temperatures below the critical one (Tc≈20 MeV) the phase diagram of hot nuclear matter may be reconstructed by using experimentally determined cluster abundances from nucleus-nucleus collisions.
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  • 13
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 17 (1980), S. 153-155 
    ISSN: 1432-1041
    Keywords: sparteine N-oxidation ; debrisoquine 4-hydroxylation ; pharmacogenetics ; debrisoquine metabolism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Two subjects from each of the three groups of homozygous rapid, heterozygous, and homozygous non-metabolizers (N-oxidation) of sparteine received a single oral dose of debrisoquine. The urinary ratio of debrisoquine/4-hydroxy-debrisoquine, reflecting the individual's capacity to C-hydroxylate debrisoquine, was closely related to his phenotype for sparteine metabolism. This indicates that the two metabolic reactions are controlled by similar if not identical genetic factors.
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  • 14
    Electronic Resource
    Electronic Resource
    Springer
    Wood science and technology 18 (1984), S. 241-241 
    ISSN: 1432-5225
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 15
    Electronic Resource
    Electronic Resource
    Springer
    Wood science and technology 18 (1984), S. 19-32 
    ISSN: 1432-5225
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Summary The structure of coniferous wood is characterized by pronounced differences in density between earlywood and latewood. This could result in disadvantages in wood strength especially against bending. A summary of the observations in this paper leads to the following hypothesis: Coniferous trees meet this danger by forming numerous stiffenings especially in broad annual rings with a high percentage of earlywood. Such stiffenings may be produced by more or less slight fluctuations of density or chemistry within annual rings in radial as well as in tangential directions. The question remains open which anatomical or chemical reasons, upon sandblasting, locally cause radial or radially branched ribs and craters in cross sections, waviness in radial sections and “cloudy” structures in tangential sections.
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  • 16
    Electronic Resource
    Electronic Resource
    Springer
    Wood science and technology 17 (1983), S. 163-164 
    ISSN: 1432-5225
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 17
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 53 (1983), S. 95-107 
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In addition to Ni2+(3d 8) with its known internal transitions, Ni+(3d 9) is identified here by detecting its2E(D)↔2 T 2(D) transition in ZnS and ZnSe both in absorption and emission. An analysis of vibronic satellites in these spectra indicates a moderate Jahn-Teller coupling in the2 T 2 ground state. Thermal annealing procedures which raise the Fermi level allow to increase the intensity ratio between the characteristic low-temperature optical bands of Ni+ and Ni2+. Ionisation and capture processes at these centres are studied by using the intensity of internal transitions as a probe for the concentration of the respective charge state of nickel. They are induced by additional optical irradiation of the samples in various spectral ranges. These photoionisation and radiative recombination processes manifest themselves in absorption, excitation and luminescence spectra as well as in the spectral response of photosensitive EPR signals. In addition to the threshold for the process [Ni2+]x+hv→[Ni+]′+e vb / which had previously been determined, the experiments yield another threshold for the reaction [Ni+] +hv→[Ni2+]x+e cb /′ . A well-known but hitherto unsettled emission band of ZnS:Ni is attributed to the radiative recombination which is the reverse of this photoionisation. The corresponding transition in ZnSe:Ni is observed as well.
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  • 18
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 21 (1984), S. 351-352 
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Perturbative QCD is used in lowest order for estimating the phase transition from quarks to hadrons in the early universe. The transition temperature,T=200±20 MeV, turns out to be significantly smaller than that deduced from potential models.
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  • 19
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 296 (1980), S. 55-63 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In order to describe dissipative heavy ion collisions microscopically a generalized master equation for the reduced density operator of the relative motion is derived. In the approach phase the description of the time development of the internal system is considerably simplified by employing a doorway concept. Concerning the coupling between doorway and more complex states a strong and weak coupling limit is defined. The resulting classical equation for the relative motion shows up to be reversible at the beginning of the collision process and becomes irreversible later on. The corresponding friction coefficient tourns out to be proportional to the width of the doorway states.
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  • 20
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Describing the expanding fireballs in a relativistic gas dynamical approach the formation of deuterons is calculated under consideration of inmedium corrections. The theoretical results are in good agreement with experimental data.
    Type of Medium: Electronic Resource
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