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  • 1
    Electronic Resource
    Electronic Resource
    The density near a critical composition of the AOT–water–decane microemulsion (1989)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 91 (1989), S. 620-621 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.457448
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  • 2
    Electronic Resource
    Electronic Resource
    Refractivity virial coefficients of C2H4 and C2H4–Ar mixtures (1988)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 89 (1988), S. 7435-7440 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Refractivity virial coefficients of pure ethylene and five mixtures of ethylene–argon have been determined at 303 K. Combination of the dielectric second virial coefficient (Bε) and the refractivity second virial coefficient (BR) gives the contribution of the quadrupole induced dipole effect (BOR =Bε −BR) which leads to the determination of the average quadrupole moment of (3.33±0.16)×10−26 esu cm2 for pure C2H4 and (3.23±0.38)×10−26 esu cm2 for C2H4–Ar. These values agree well with the values of the quadrupole moment determined by other methods.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.455273
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  • 3
    Electronic Resource
    Electronic Resource
    Determination of the quadrupole moment of nitrogen from the dielectric second virial coefficient (1991)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 94 (1991), S. 3849-3854 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Dielectric virial coefficients of nitrogen have been measured at 323.15 K. By combining the dielectric second virial coefficient with the refractivity second virial coefficient we determined the quadrupole moment of nitrogen to be (1.47±0.07)×10−26 esu cm2. In calculating the molecular quadrupole moment from the dielectric second virial coefficient, effects due to various interaction energy terms were taken into consideration. These energy terms are due to quadrupole–quadrupole interaction, quadrupole-induced dipole interaction, reaction fields of induced moments and anisotropic effects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.460685
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  • 4
    Electronic Resource
    Electronic Resource
    Ab initio localized molecular orbital predictions of vibrational circular dichroism: Trans-2,3-dideuterooxirane (1990)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 93 (1990), S. 7524-7525 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.459381
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  • 5
    Electronic Resource
    Electronic Resource
    Experimental determination of the dielectric virial coefficients of atomic gases as a function of temperature (1991)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 95 (1991), S. 2683-2687 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The second dielectric virial coefficient of atomic gases has been measured precisely as a function of temperature in the range 77 to 407 K. The experimental values are compared with the ab initio calculations and the collision-induced polarized scattered spectra (CIS). Except for helium, the Bε values derived from ab initio calculations and CIS parameters do not agree with the experimental values.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.461801
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  • 6
    Electronic Resource
    Electronic Resource
    Dielectric study of percolation in an oil–continuous microemulsion (1991)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 94 (1991), S. 6879-6886 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Measurements of the electrical conductivity and the complex permittivity near a percolation threshold in the ternary microemulsion system composed of water, iso-octane, and AOT are reported. It is shown that the electrical conductivity, which implies charge transfer process, is well described by a dynamic percolation model. The frequency dependence of the dielectric constant and the behavior of the relaxation frequency are also found to be in close agreement with the scaling power laws of the dynamic percolation model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.460268
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  • 7
    Electronic Resource
    Electronic Resource
    Some examples of the algebra of flows (1990)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 31 (1990), S. 1042-1046 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: The algebra of the group of smooth maps from a manifold M to a compact simple Lie group G is studied for two cases. The first is when M is the double coset SO (d,R)/SO(d+1,R)/SO (d,R), the corresponding maps are those from a d sphere to G that are invariant under left translations by elements from SO (d, R). In the second example, M is a two-dimensional torus. The problem of central extension of these algebras is solved. For the first example, no central extension is possible. For the second, the number of independent central extensions is infinite.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.528780
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  • 8
    Electronic Resource
    Electronic Resource
    New dielectric method for the measurement of physical adsorption of gases at high pressure (1987)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 58 (1987), S. 2279-2283 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A new method for the measurement of gas adsorption at high pressure is described in detail. The method is based on dielectric virial coefficients and it takes advantage of the dielectric technique for the accurate measurement of the compressibility factor of gases at high pressure. The method is simple, self-sufficient, easy to use, and permits precise measurement of the density of nonideal gases. Adsorption measurements of methane on BPL-activated carbon as a function of pressure at 25 °C are reported.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1139336
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  • 9
    Electronic Resource
    Electronic Resource
    Investigation of a microwave differential cavity resonator device for the measurement of humidity in gases (1999)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 70 (1999), S. 3590-3594 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A resonant cavity based microwave differential device has been developed as a sensor for the measurement of small quantities of water vapor in gases. The presence of a contaminant is assessed by induced variations in the relative permittivity due to a shift in the resonant frequency of the measuring resonator. The measured output signal is related to the difference in the reflection coefficients of the measuring resonator and the reference one. A simple modeling approach of the system shows the proportionality between the difference of the reflection coefficients of the cavities and the variation in the dielectric constant. The evaluation of the minimum detectable change in the permittivity is possible using the Clausius–Mossotti equation for a binary gas mixture at a given concentration and pressure. The detection threshold is then determined by taking into account the signal-to-noise ratio of the differential setup. The estimation of the limit of detection for some practical moisture contaminated gases yields values in the low ppm level at T=293 K and atmospheric pressure. Experimental data suggest a detection threshold of 6 ppm for moisture. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1149995
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  • 10
    Electronic Resource
    Electronic Resource
    Dielectric measurements with a resonance method for comparing low-value three-terminal capacitors (1987)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 58 (1987), S. 1096-1103 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A resonance system for comparing low-value three-terminal capacitors with an active guard circuit based on an instrumentation amplifier is described in detail. The system is simple, easy to calibrate, and permits precise measurement of lossy three-terminal capacitors in the frequency range 50 Hz–10 MHz. Dielectric measurements made with this apparatus on 1-propanol at low temperatures are reported.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1139612
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