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  • Articles  (64)
  • 1985-1989  (64)
  • Physics  (56)
  • Process Engineering, Biotechnology, Nutrition Technology  (4)
  • Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics  (3)
  • Mathematics  (2)
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  • Articles  (64)
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  • 1
    Electronic Resource
    Electronic Resource
    Comment on "Quantifying solid-fluid interfacial phenomena in porous rocks with proton nuclear magnetic resonance'' [J. Appl. Phys. 59, 2788 (1986)] (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 63 (1988), S. 1244-1244 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Far-reaching conclusions, not supported by the data presented, are drawn in this paper. An enhanced nuclear magnetization is reported by the authors and said to suggest a collective motion of the water molecules in pores of some porous rocks partially saturated with water. However, the data for these special rocks show a nuclear magnetization deficiency at partial fluid saturation and an even greater deficiency at full saturation. Multimodal distributions of pore sizes in rocks are inferred from multiexponetial relaxation data. However, these data would have to be far more accurate than experimentally possible to resolve the questions raised.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.339993
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  • 2
    Electronic Resource
    Electronic Resource
    Quadratic resonance in the three-dimensional oscillations of inviscid drops with surface tension (1986)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 29 (1986), S. 2788-2797 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The moderate-amplitude, three-dimensional oscillations of an inviscid drop are described in terms of spherical harmonics. Specific oscillation modes are resonantly coupled by quadratic nonlinearities caused by inertia, capillarity, and drop deformation. The equations describing the interactions of these modes are derived from the variational principle for the appropriate Lagrangian by expressing the modal amplitudes to be functions of a slow time scale and by preaveraging the Lagrangian over the time scale of the primary oscillations. The equations describing the motion of axisymmetric resonant modes are integrable. Stochastic motions are predicted for nonaxisymmetric deformations starting from most initial conditions, even those arbitrarily close to the axisymmetric shapes. The stochasticity is characterized by a redistribution of the energy contained in the initial deformation over all the degrees of freedom of the interacting modes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.865475
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  • 3
    Electronic Resource
    Electronic Resource
    Dynamic centering of liquid shells (1987)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 30 (1987), S. 27-35 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The moderate-amplitude axisymmetric oscillations of an inviscid liquid shell surrounding an incompressible gas bubble are calculated by a multiple-time-scale expansion for initial deformations composed of two-lobed perturbations of the shell and a displacement of the bubble from the center of mass of the liquid. Two types of small-amplitude motion are identified and lead to very different nonlinear dynamic interactions, as described by the results valid up to second order in the amplitude of the initial deformation. In the "bubble mode,'' the oscillations of the captive bubble and the liquid shell are exactly in phase and the bubble vibrates about its initial eccentric location. The bubble moves toward the center of the drop when the shell is perturbed into a "sloshing mode'' of oscillation where both interfaces move out of phase. These results explain the centering of liquid shells observed in several experiments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.866190
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  • 4
    Electronic Resource
    Electronic Resource
    Barriers to chaotic classical motion and quantum mechanical localization in multiphoton dissociation (1986)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 90 (1986), S. 3590-3594 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100407a025
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  • 5
    Electronic Resource
    Electronic Resource
    A method for improving load turndown in fluidized bed combustors (1988)
    s.l. : American Chemical Society
    Industrial & engineering chemistry research 27 (1988), S. 24-30 
    Details
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ie00073a006
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  • 6
    Electronic Resource
    Electronic Resource
    Laser desorption-Fourier transform mass spectrometry for the characterization of polymers (1986)
    s.l. : American Chemical Society
    Macromolecules 19 (1986), S. 1255-1260 
    Details
    ISSN: 1520-5835
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ma00158a053
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  • 7
    Electronic Resource
    Electronic Resource
    Vibrational resonances and IR multiphoton excitation (1985)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 82 (1985), S. 4777-4787 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The influence of an internal vibrational resonance on the IR multiphoton excitation of a model molecular system is studied numerically using Floquet theory. It is shown that a classical resonance zone can bottleneck photon absorption. The bottleneck effect is easily understood in terms of the strongly perturbed phase space topology near a classical resonance zone and the corresponding distortions in quantum mechanical eigenstates and eigenvalues of the field-free Hamiltonian.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.448695
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  • 8
    Electronic Resource
    Electronic Resource
    Proteolytic fragment or new gene product? (1988)
    [s.l.] : Nature Publishing Group
    Nature 336 (1988), S. 210-210 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - A recent report by Arahata et al.1 has apparently created some confusion regarding the protein product of the Duchenne muscular dystrophy (DMD) gene. In an attempt to clear up this confu-sion, we would like to discuss some recent published data, and offer alternative explanations for the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/336210a0
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  • 9
    Electronic Resource
    Electronic Resource
    Insulin-regulatable tissues express a unique insulin-sensitive glucose transport protein (1988)
    [s.l.] : Nature Publishing Group
    Nature 333 (1988), S. 183-185 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A major mechanism by which insulin stimulates glucose transport in rat adipocytes is by increasing the number of cell-surface transport proteins concomitant with the depletion of transporters from an intracellular pool, called low-density microsomes7"11. We have recently described a procedure for ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/333183a0
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  • 10
    Electronic Resource
    Electronic Resource
    Observations of longitudinal roll vortices during arctic cold air outbreaks over open water (1988)
    Springer
    Boundary layer meteorology 45 (1988), S. 177-199 
    Details
    ISSN: 1573-1472
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract An evolving convective Arctic planetary boundary layer (PBL) containing longitudinal roll vortices (rolls) was observed with aircraft data during the 1983 Marginal Ice Zone Experiment and the 1984 Arctic Cyclone Experiment. The PBL is observed to grow rapidly as the very cold and dry air flows off the ice over the relatively warm water. There is very large sensible heat flux, a result of the large surface-air temperature differences. Coherent structures were identified in these PBL's by use of power, coherence squared and phase spectra of the data. A systematic method of separating the rolls from organized thermal plumes was devised, based on theoretical characteristics for roll circulations and the resulting modified mean wind profile. The rapid mixing by the rolls aids in the establishment of equilibrium and an observed adiabatic modified mean Ekman layer. Rolls that form in a thermally neutral atmosphere over ice have different characteristics than those that appear in the unstable stratification over water. The rolls become increasingly more convective in character with distance from the ice edge. They have aspect ratios (wavelength/PBL height) that decrease with distance from the ice edge in agreement with linear theory. This is in contrast to the cloud street wavelength to inversion height ratio which is observed to increase downwind from the ice edge.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00120822
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