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  • 1990-1994  (3)
  • 1975-1979  (1)
  • Computational Chemistry and Molecular Modeling  (2)
  • Polymer and Materials Science  (2)
  • Depression
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 29 (1978), S. 815-820 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Oxidation of PbCa alloys in the liquid stateThe effect of various temperatures, the composition of the alloy and the corroding atmosphere is studied with a thermobalance during the oxidation of molten PbCa alloys. The rate controlling step of the oxidation depends on the test conditions. The results obtained at 700°C are in agreement with data found in literature and according to which the oxidation increases with the Ca content; in this range calcium is subject to preferential oxidation. At 600°C and temperatures below that the addition of calcium does not only not increase oxidation but may give rise to a decrease.
    Notes: Mit einer Thermowaage wird die Wirkung verschiedener Temperaturen, der Zusammensetzung der Legierung und der Zusammensetzung der angreifenden Atmosphäre bei der Oxidation geschmolzener Pb-Ca-Legierungen untersucht. Der geschwindigkeitsbestimmende Schritt der Oxidation hängt von den Versuchsbedingungen ab. Bei 700°C bestätigen die bei der vorliegenden Untersuchung erhaltenen Ergebnisse die Literaturangaben, wonach die Oxidation bei zunehmendem Ca-Gehalt ansteigt; dabei wird das Calcium vorzugsweise oxidiert. Dagegen wird bei 600°C und darunter die Oxidation durch Zusatz von Calcium nicht nur nicht verstärkt, sondern sogar verringert.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    International Journal of Quantum Chemistry 46 (1993), S. 515-518 
    ISSN: 0020-7608
    Keywords: Computational Chemistry and Molecular Modeling ; Atomic, Molecular and Optical Physics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Squeezed states are normally studied in configuration space or using the Glauber formalism for the coherent states. Here we show that the use of the Fock-Bargmann space can lead to more general solutions, especially in the case of squeezed states associated with the square of field amplitude. The relations that we obtain are completely general and several well-known, approximate results can be obtained as the limit cases of our approach.© 1993 John Wiley & Sons, Inc.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Electroanalysis 6 (1994), S. 491-496 
    ISSN: 1040-0397
    Keywords: Iproniazid ; Differential pulse polarography ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Iproniazid was found to be irreversibiy reduced in two steps, involving the exchange of two electrons and two protons each, by using tast polarography, normal pulse polarography (NPP), and cyclic voltammetry (CV). The rate constants of these two steps were found to be 5.8 × 10-6 and 4.2 × 10-6 and 4.2 × 10-6 cm s-1, respectively, and their corresponding diffusion coefficients 4.5 × 10-5 and 8.3 × 10-5 cm2 s-1, Also, α, the coefficient of cathodic transfer, was found to be 0.20 to 0.25 for the first peak and 0.17 to 0.15 for the second. On the basis of the electrochemical study performed, a differential pulse polarographic method for the determination of iproniazid over the concentration range of 5 × 10-7 M to 1 × 10-4 M was developed.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    International Journal of Quantum Chemistry 52 (1994), S. 261-264 
    ISSN: 0020-7608
    Keywords: Computational Chemistry and Molecular Modeling ; Atomic, Molecular and Optical Physics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Similarities between the Franck-Condon effect and the concept of Squeezed States have been advanced as a conjecture in the past, or noticed as a marginal fact, without giving a full explanation of how these two important concepts are connected. In this work we outline a unifying formulation that contains as special cases both phenomena. The power of the new approach is shown in a general formula from which all particular cases can be derived. © 1994 John Wiley & Sons, Inc.
    Type of Medium: Electronic Resource
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