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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 89 (1985), S. 4569-4574 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 89 (1985), S. 5705-5709 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 84 (1986), S. 3567-3572 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Time dependent transport of triplet excitations in amorphous benzophenone, anthraquinone, and phenanthrene has been investigated in the temperature range 4.2 K≤T≤100 K by monitoring diffusion-controlled decay of the inhomogeneously broadened 0–0 phosphorescence band of bulk states. The results are in excellent agreement with both the analytic theory of Grünewald et al. and computer simulation of nonequilibrium transport. They indicate the applicability of a stochastic transport model based on asymmetric hopping rates with unrestricted energy relaxation. The time dependence of the ensemble averaged hopping frequency has been determined within three decades of time. It can be approximated by a ν(t)∼(t/t0)α−1 law with time dependent dispersion parameter α.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 84 (1986), S. 1590-1597 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The benzophenone molecule has been treated in MNDO, MNDOC, and MINDO/3 approximation as a function of the twist angle α of the phenyl rings. Calculated were (i) the energies of S0 and T1 state, (ii) delocalization of the n and π* orbitals involved in the 3nπ* state, (iii) net atomic charges,(iv) the force constants of the C=O vibration in the S0 and T1 state, respectively, (v) vertical transition energies for T1←S0 and S1←S0, and (vi) the position of upper triplet states. The results are discussed in relation to the spectroscopic properties of the T1 state of a vitreous benzophenone phase. It is concluded that diagonal disorder is due to a significant fluctuation of α causing both a spread of the site energies of the glass-forming molecules and a variation of spin-orbit coupling.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    European journal of nutrition 24 (1985), S. 133-139 
    ISSN: 1436-6215
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Medicine
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    European journal of nutrition 27 (1988), S. 71-74 
    ISSN: 1436-6215
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Medicine
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    European journal of nutrition 27 (1988), S. 57-70 
    ISSN: 1436-6215
    Keywords: Retinol ; Vitamin-A-Status ; Vitamin-A-Serumbestimmung ; Hypervitaminose A ; Hypovitaminose A ; retinol ; vitamin A status ; vitamin A serum determination ; hypervitaminosis A
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Medicine
    Description / Table of Contents: Summary As demonstrated in the literature on vitamin A metabolism and homeostasis of retinol in serum, the concentration of retinol in serum is regulated very exactly if the liver stores are within the physiological range (20–300 Μg/g liver). Therefore, the serum level indicates the status of vitamin A storage only if there is an extreme depletion or overconsumption of vitamin A. At marginal depletion, however, there is damage to peripheral tissue before changes in the vitamin A level in serum occur. At the beginning of hypervitaminosis A, changes in the level of vitamin A in serum also occur later. Therefore, the determination of vitamin A in serum gives no information on the adequacy of liver reserves for judging the necessity of a substitution.
    Notes: Zusammenfassung Wie viele Arbeiten über den Vitamin-A-Metabolismus und Retinol-Serumhomöostase zeigten, unterliegt die Retinol-Serum-Konzentration im physiologischen Bereich der Leberreserven (20–300 Μg/g Leber) einer strengen Regulation. Daher gibt der Serumspiegel nur bei einem extremen Mangel oder bei übersättigung mit Vitamin A Auskunft über die Speichervorkommen. Im Grenzbereich, dem marginalen Mangel, kommt es aber schon zur Schädigung peripherer Gewebe, bevor sich der Retinol-Serumspiegel verändert. Auch bei beginnender Hypervitaminose A zeigen sich Veränderungen im Serumspiegel erst zu einem späteren Zeitpunkt. Daher ist die Bestimmung des Vitamin-A-Serumspiegels kein guter Indikator für den Vitamin-A-Status und die Beurteilung der Notwendigkeit einer Substitution.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    European journal of nutrition 24 (1985), S. 67-71 
    ISSN: 1436-6215
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Medicine
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Archives of gynecology and obstetrics 246 (1989), S. 153-157 
    ISSN: 1432-0711
    Keywords: Cystosarcoma phyllodes (Phyllodes tumor, WHO) of the breastrate and distribution of mitosis-criteria of malignancy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The rate of mitosis was determined in 47 cases of cystosarcoma phyllodes which had already been classified by morphological criteria (tumor margin and cellular atypia) as benign (17 cases), malignant (23 cases) and borderline (7 cases). Tumors which had been classified histopathologically as benign or of borderline had mitotic rates of 3 mitosis/10 HPF or less, whereas malignant cystosarcomas showed rates of 2–36 mitoses/10 HPF. Only high rates of mitosis (10/10 HPF) correlated well with a histopathologic diagnosis of malignancy.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 31 (1953), S. 675-675 
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Zusammenfassung Propionsäure hemmt die Acetessigsäurebildung in der Leber durch Blockierung des bei der Acetessigsäure beteiligten Enzymsystems.
    Type of Medium: Electronic Resource
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