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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    FEBS Letters 284 (1991), S. 79-81 
    ISSN: 0014-5793
    Keywords: Bandshape analysis ; Cyclophilin ; Cyclosporin A ; Peptidyl-prolyl cis-trans isomerase ; Prolin cis-trans isomerism ; ^1H dynamic NMR
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    FEBS Letters 250 (1989), S. 267-270 
    ISSN: 0014-5793
    Keywords: Cyclophilin ; Cyclosporin ; Deuterium isotope effect ; Prolyl cis/trans-isomerase ; Prolyl imidic bond ; cis/trans interconversion
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 0014-5793
    Keywords: Calcitonin ; Cyclophilin ; Cyclosporin A ; NOESY spectroscopy ; Peptidyl-prolyl cis/trans isomerase ; ^1H NMR lineshape analysis
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 92 (1993), S. 187-190 
    ISSN: 1434-6036
    Keywords: 74.50
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We studied the carrier transport through n-InSb-films sandwiched between two superconducting lead electrodes. These n-InSb-films were about 30 nm thick, polycrystalline and very highly doped (1021 cm−3). TheV(I)- and dV/dI (V)-characteristics indicated all the properties of Andreev-reflection (subharmonic energygap structures (SGS) and excess current) according to the theory of Octavio et al. (OTBK-model) [1, 2]. Our measurements show the temperature dependence of these structures and also the influence of magnetic fields up to 80 mT and give a further reference to the importance of Andreev-reflection in semiconductor-coupled superconducting junctions (SSmS junctions).
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 316 (1962), S. 119-127 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Extremely thin carbon foils were obtained: 1by reduction of graphite oxide (G.O.) suspended in dilute sodium hydroxide,2by deflegration of heated G.O.The adsorption of nitrogen, methylene blue and phenol were measured as well as the catalytic efficiency in the HBr synthesis.With the samples obtained by reduction of G. O., larger surface areas were found by adsorption from solution than by nitrogen adsorption or from the catalytic efficiency. This is explained by the agglomeration of the foils on isolation.With the deflagration product, however, all methods gave the same surface areas. The cause of this different adsorption behaviour is discussed.
    Notes: Sehr dünne Kohlenstoff-Folien wurden erhalten: 1durch Reduktion einer Suspension von Graphitoxyd (G. O.) in verdünnter Natronlauge,2durch Verpuffung von G. O. beim Erhitzen.Die Adsorption von Stickstoff, von Methylenblau und von Phenol wurde gemessen; außerdem wurde die katalytische Leistung bei der HBr-Synthese bestimmt.Bei dem durch Reduktion erhaltenen Präparat wurden mit der Adsorption aus wäßriger Lösung größere spez. Oberflächen gefunden, als mit der Gasadsorption oder aus der katalytischen Leistung. Die größte spez. Oberfläche wurde direkt in der bei der Reduktion erhaltenen Suspension gemessen. Die niederen Werte der spez. Oberfläche sind eine Folge der Agglomeration bei der Isolierung.Im Gegensatz dazu gaben bei dem durch Verpuffen erhaltenen Präparat alle Methoden gleiche spez. Oberflächen. Dieser Unterschied wird darauf zurückgeführt, daß die Folien des durch Verpuffen von G. O. erhaltenen Präparates im Gegensatz zu denen des Reduktionsproduktes durchlöchert sind.Die Messung der katalytischen Leistung ergab, daß die Bromwasserstoff-Bildung an den Basisflächen des Kohlenstoffs erfolgt.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 463 (1980), S. 123-131 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Association Behaviour of Strannatranes1-Alkylstannatranes (R = Me, Et, Bu, Phenyl) associate in unpolar solvents to relatively stable trimeric units. In aqueous solution 1-methylstannatran displays no autoassociation. 1-t-Butylstannatran, 1-o-tolylstannatran, and 1-alkylthiostannatranes are monomeric in all kinds of solvents. The association behaviour is characterized by molecular mass estimation and 1H-, 13C-, and 119Sn-NMR measurements.
    Notes: Es wird über einige neue Stannatrane und Thiostannatrane berichtet und gezeigt, daß die 1-Alkylstannatrane in unpolaren Lösungsmitteln zu relativ stabilen trimeren Einheiten assoziieren. In wäßriger Lösung zeigt 1-Methylstannatran keine Selbstassoziation. 1-t-Butylstannatran, 1-o-Tolylstannatran und 1-Alkylthiostannatrane sind in allen Lösungsmitteln monomer. Das Assoziationsverhalten wird durch Molekulargewichtsbestimmung und 1H-, 13C- und 119Sn-NMR-Messungen charakterisiert.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 29 (1991), S. 204-206 
    ISSN: 0749-1581
    Keywords: 2D EXSY NMR ; Complete line-shape analysis ; Aroylcyanoketene-S,S-dimethylacetals ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The applicability of 2D EXSY NMR spectroscopy for studying quantitatively the dynamic behaviour in three aroylcyanoketene-S, S-dimethylacetals was tested by means of 1H NMR spectroscopy. It can be concluded that the method is a reasonable qualitative supplement to complete line-shape analysis.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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