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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 89 (1985), S. 3689-3693 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 60 (1986), S. 3732-3734 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Asymmetry introduced to an otherwise planar phased array Bragg cell transducer design results in the elimination of one of two steering acoustic wave fronts. Therefore, all of the acoustic power is applied to the acousto-optic interaction process. In addition, a factor of 1.8 improvement in wide-band acousto-optic Bragg cell interaction efficiency is realized over the planar phased array design. The technique to establish the asymmetry was to use a periodic silver film as a quarter-wave step. This new technique is particularly suitable for the construction of wideband Bragg cells at microwave frequencies.
    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 86 (1987), S. 7149-7155 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The method of molecular dynamics was used to examine the structure and stability of water pentamers for a variety of initial configurations. The evolution of each configuration was followed over a temperature range of 5 to ∼300 K. It was found that at low temperatures, insufficient energy was present for structure interconversion. Thus a time average was not equivalent to a phase space average and the pentamer cluster system is not ergodic below ∼60 K. In addition to the structure studies, collisions of a water monomer with the pentamer cluster were modeled using different impact parameters. In the collisions, only small energy transfer was required for monomer absorption. Re-evaporation or evaporation events in either the collision simulations or the heating runs were rare.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 50 (1985), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The folacin activities in fresh Swiss chard leaves stored in open air at 4, 21, 35 and 40°C were determined by a microbiological assay using Lactobacillus casei. At 21°C the leaves were also stored in plastic bags and under moist conditions. Folacin was most stable when the vegetable was stored in plastic bags, followed by the moist condition, and least stable in open air at 21°C. The degradation of folacin in Swiss chard under all conditions followed firstorder kinetics. The temperature dependent folate degradation conformed to the Arrhenius equation and the activation energy was 24 kcal/mole.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical chemistry accounts 70 (1986), S. 3-10 
    ISSN: 1432-2234
    Keywords: I-MNDO ; MNDO ; Hydrogen bond ; Ionization potential ; Water clusters ; Water dimer ; Electronic polarizability ; Parametrization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Semi-empirical molecular orbital methods proposed up to now seriously fail to describe hydrogen bonded systems associated with (H2O) n . A new scheme of parametrization using a semi-empirical method is proposed. We tested hydrogen bonding associated with the water clusters (H2O) n . The results are found to be close to ab initio Hartree-Fock quality, indicating a good promise for studying hydrogen-bonding systems other than O-H...O moiety.
    Type of Medium: Electronic Resource
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