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  • 1
    Call number: SR 90.0007(33)
    In: Bulletin
    Type of Medium: Series available for loan
    Pages: V, 46 S.
    Series Statement: Bulletin / Geological Survey of Canada 33
    Language: English
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 2
    Call number: SR 90.0925(34)
    In: Economic geology report
    Type of Medium: Series available for loan
    Pages: 136 S. + 2 Kt.-Beil., 2 Beil.
    ISBN: 0660119021
    Series Statement: Economic geology report 34
    Language: English
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 3
    Series available for loan
    Series available for loan
    Ottawa
    Associated volumes
    Call number: SR 90.0925(29)
    In: Economic geology report
    Type of Medium: Series available for loan
    Pages: IX, 157 S. + 1 Kt.-Beil.
    Series Statement: Economic geology report 29
    Language: English
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 4
    Series available for loan
    Series available for loan
    Ottawa : Geological Survey of Canada
    Associated volumes
    Call number: SR 90.0008(63-37)
    In: Paper
    Type of Medium: Series available for loan
    Pages: 69 S.
    Series Statement: Paper / Geological Survey of Canada 63-37
    Language: English
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 5
    Series available for loan
    Series available for loan
    Ottawa : Geological Survey of Canada
    Associated volumes
    Call number: SR 90.0007(142)
    In: Bulletin
    Type of Medium: Series available for loan
    Pages: 76 S. + 3 pl.
    Series Statement: Bulletin / Geological Survey of Canada 142
    Language: English
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 6
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 92 (1990), S. 5473-5485 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: A microscopic lattice model of two-component mixtures of water and amphiphile is introduced. The model is defined on a simple cubic lattice, the vertices of which are occupied by Ising and Heisenberg degrees of freedom which model water- and amphiphile-filled cubes. The orientations of the lipid molecules are described by the directions of the Heisenberg spin–vectors. Microscopic interactions between two water-filled cubes, two lipid-filled cubes, or a water- and a lipid-filled cube are related to the coupling constants of the model. In this paper we discuss the zero-temperature states of the model and, for some parts of the parameter space, these are explicitly constructed from local octahedral clusters of the cubic lattice. We then introduce a mean-field theory that preserves the full symmetry of the Hamiltonian, and thereby construct the global phase diagrams for different choices of the coupling parameters. In the conclusions to our paper we comment on other theoretical methods of solution being applied to the present Hamiltonian.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 91 (1989), S. 6393-6403 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: A microscopic model of lyotropic systems is presented. Amphiphile and water molecules are described by simple intermolecular potentials which correctly include important excluded volume effects and the relative energy scales in the system. The present model represents an attempt to bridge the gap between more primitive lattice models and highly complex all-atom descriptions of amphiphilic systems. A constant-temperature molecular dynamics study in which the divergence of the pressure tensor is constrained to zero is discussed. Preliminary calculations on the phase diagram, order parameters, and dynamical observables of the model are reported. Some comments on improvements to the model and the theoretical techniques used to study it are made in the final section of the paper.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 88 (1988), S. 5149-5156 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: We derive the phase diagram of a recently proposed model of microemulsions. The model is equivalent to an Ising model with nearest-neighbor interaction parameter J, diagonal-neighbor interaction parameter 2M, and further-neighbor interaction parameter M. We find the regions of stability of the various phases in the j(=J/kT), m(=M/kT) plane, both by solution of the mean-field equations at finite j and m and by an exact analysis at T=0(m→−∞, j→±∞). The disordered (paramagnetic) region is bounded by an ellipse and two of its tangents. We concentrate our attention on the phases of periodic structure near the paramagnetic boundary, on the low-temperature phases, and on the connections between them.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 96 (1992), S. 3152-3169 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: A three-component lattice model with unit-vector orientations at the lattice sites is presented. The model describes ternary mixtures of oil, water, and amphiphile, and in particular the microemulsion phase. The phase diagram of the model is derived using mean-field theory and simulation. It is shown that the results of Monte Carlo simulations of sufficiently large systems show remarkable agreement with experiment. In particular, the present model reproduces the mesoscopic order of the microemulsion phase. The structure of the microemulsion is understood in terms of the liquid-crystalline phases adjacent to it on the phase diagram and the nature of the phase transitions that occur between them. The behavior of the system when the ratio of oil to water is changed is investigated and the percolation threshold is described. A method for carrying out dynamical simulations is discussed.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 97 (1992), S. 7695-7698 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: We consider a Hamiltonian for a complex fluid. The linear excess bulk viscosity due to a spatially varying order parameter is investigated. We calculate the dependence of the excess viscosity Δη, on the fundamental parameters d and ξ, everywhere within the disordered phase (d being the domain size of water or oil and ξ being the correlation length between domains). It is found that there is a crossover region in the isotropic disordered phase of this model. More specifically, in the structured region of the isotropic disordered phase Δη grows as ξ3 in the vicinity of disordered-lamellar transition. This is quite distinct from the behavior of the excess viscosity in the unstructured region where Δη grows as ξ in the vicinity of the order-disorder transition.
    Type of Medium: Electronic Resource
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