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  • 1
    Electronic Resource
    Electronic Resource
    Evidence of random structural features in the heparin polymer (1985)
    s.l. : American Chemical Society
    Biochemistry 24 (1985), S. 7805-7810 
    Details
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/bi00347a045
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  • 2
    Electronic Resource
    Electronic Resource
    Morphogenesis of human colon cancer cells with fetal rat mesenchymes in organ culture (1986)
    Springer
    Cellular and molecular life sciences 42 (1986), S. 312-315 
    Details
    ISSN: 1420-9071
    Keywords: Human colon cancer cells ; morphogenesis ; carcinoembryonic antigen ; secretory components ; organ culture
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The morphogenesis and cytodifferentiation of human colon cancer cells (LS174T and HT29) were examined by combining cancer cells with fetal rat digestive-tract mesenchyme in organ culture. LS174T cells migrated into the mesenchyme to form glandular structures composed of single columnar cells with their nuclei oriented basally, while HT29 cells formed cell masses with little lumen formation. Immunohistochemical studies with antibodies against carcinoembryonic antigen and secretory components showed that the composition of cell surface glycoproteins was not necessarily reversed to the normal type, even when neoplastic cells exhibited normal glandular structures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01942518
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  • 3
    Electronic Resource
    Electronic Resource
    Antioxidant Property in Ginger Rhizome and Its Application to Meat Products (1986)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 51 (1986), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Some characteristics of an antioxidant factor in ginger rhizome were studied. The antioxidant property was evenly distributed across the cross-section of rhizome, and was very effective against lipid oxidation. Two thirds of the original activity remained after 2 hr of boiling. Its effectiveness was dependent on pH, increasing with increasing pH between 5 and 7. A linear relationship was observed between the amount of ginger extract added to the oxidation system and the protection factor values. The antioxidative effectiveness of ginger extract was further tested with fresh, frozen and precooked pork patties. The shelf life of all products determined by TBA value was improved by the inclusion of ginger extract.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1986.tb10826.x
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  • 4
    Electronic Resource
    Electronic Resource
    Highly efficient separate-confinement PpinN GaAs/AlGaAs waveguide phase modulator (1989)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 55 (1989), S. 1865-1867 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We report a high-efficiency PpinN GaAs/AlGaAs waveguide phase modulator for high-speed operations. By introducing p- and n-GaAs layers beside the intrinsic GaAs layer of a P-i-N double heterostructure, the absorption edge-related effect, hardly used in P-i-N phase modulators, is utilized. We demonstrate a high phase shift efficiency of 37.5°/V mm at 1.3 μm wavelength. Although this corresponds to the highest expeirmental value reported for reverse-biased GaAs/AlGaAs phase modulators, our device operates with a low junction and a very low dynamic capacitance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.102155
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  • 5
    Electronic Resource
    Electronic Resource
    Cylindrical group and massless particles (1987)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 28 (1987), S. 1175-1179 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: It is shown that the representation of the E(2)-like little group for photons can be reduced to the coordinate transformation matrix of the cylindrical group, which describes movement of a point on a cylindrical surface. The cylindrical group is isomorphic to the two-dimensional Euclidean group. As in the case of E(2), the cylindrical group can be regarded as a contraction of the three-dimensional rotation group. It is pointed out that the E(2)-like little group is the Lorentz-boosted O(3)-like little group for massive particles in the infinite-momentum/zero-mass limit. This limiting process is shown to be identical to that of the contraction of O(3) to the cylindrical group. Gauge transformations for free massless particles can thus be regarded as Lorentz-boosted rotations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.527824
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  • 6
    Electronic Resource
    Electronic Resource
    Decomposition of Lorentz transformations (1987)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 28 (1987), S. 2373-2378 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: It is shown that every Lorentz transformation can be decomposed into a helicity-preserving transformation that changes the momentum of a free particle and a helicity-changing transformation that leaves the momentum invariant. Since momentum-preserving transformations constitute a subgroup of the Lorentz group, helicity-preserving transformations form a coset space. It is shown further that, for massive particles, every Lorentz transformation can be decomposed into the Wigner rotation and helicity-preserving transformations. For massless particles, every Lorentz transformation can be decomposed into the gauge transformation and helicity-preserving transformation. The gauge transformation in this case is a Lorentz-boosted Wigner rotation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.527773
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  • 7
    Electronic Resource
    Electronic Resource
    Eulerian parametrization of Wigner's little groups and gauge transformations in terms of rotations in two-component spinors (1986)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 27 (1986), S. 2228-2235 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: A set of rotations and Lorentz boosts is presented for studying the three-parameter little groups of the Poincaré group. This set constitutes a Lorentz generalization of the Euler angles for the description of classical rigid bodies. The concept of Lorentz-generalized Euler rotations is then extended to the parametrization of the E(2)-like little group and the O(2,1)-like little group for massless and imaginary-mass particles, respectively. It is shown that the E(2)-like little group for massless particles is a limiting case of the O(3)-like or O(2,1)-like little group. A detailed analysis is carried out for the two-component SL(2,c) spinors. It is shown that the gauge degrees of freedom associated with the translationlike transformation of the E(2)-like little group can be traced to the SL(2,c) spins that fail to align themselves to their respective momenta in the limit of large momentum and/or vanishing mass.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.526994
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  • 8
    Electronic Resource
    Electronic Resource
    A new nuclear magnetic resonance imaging technique for unambiguous unidirectional measurement of flow velocity (1986)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 60 (1986), S. 1256-1262 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A new nuclear magnetic resonance (NMR) flow-velocity-imaging method applied to the study of the fluid dynamics is introduced. In the proposed technique, a selection gradient is used for the phase encoding, and since the selection gradient is relatively small compared with the conventional gradient for phase encoding it allows the measurement of high-velocity flow. To obtain the phase-velocity relationship, the Bloch equation is solved numerically and establishes the quantitative phase-velocity relationship of the flow under the slice selection gradient and echo radio frequency pulse. The flow effect compensation in the directions other than the slice selection direction is achieved by applying additional flow coding gradients similar to the conventional flow phase coding. The experimental NMR flow images obtained with the new technique are compared with the velocity measurements made with a laser Doppler velocimeter, and are found to be in close agreement.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.337347
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  • 9
    Electronic Resource
    Electronic Resource
    Bifurcation and post-bifurcation phenomena of elastic-plastic circular tubes subjected to uniform shrinkage under plane strain condition (1989)
    Springer
    Computational mechanics 4 (1989), S. 211-218 
    Details
    ISSN: 1432-0924
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Bifurcation and post-bifurcation behaviors of thick-walled elastic-plastic circular tubes subjected to uniform shrinking are analyzed numerically under plane strain condition. Bifurcation analysis to determine the condition for onset of bifurcation away from the axisymmetric deformation is carried out within the framework for such analyses, due to Hill. The influence of the material properties and the dimensions of the tubes, upon the bifurcation behavior is clarified. In order to simulate the post-bifurcation behaviors of the tubes after the onset of surface type bifurcation, a finite element analysis of uniform compression of a block is performed under the plane strain condition. The localization of deformation into a narrow band induced by the nonlinear growth of surface undulation is clarified.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00296668
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  • 10
    Electronic Resource
    Electronic Resource
    Fast neutron activation analysis of rare-earth elements in monazite from Korea (1987)
    Springer
    Journal of radioanalytical and nuclear chemistry 114 (1987), S. 359-365 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The relative ans single comparator methods have been applied to determine 7 rare-earth elements and U, Th in Korean Monazites by 14.5 MeV neutron activation analysis. The (n, 2n) nuclear reactions are used for all elements except La, for which (n, p) reaction is used. Al is used as a flux monitor for the relative method and as a singlle comparator for the single comparator method. The analytical results obtained by the two methods agree well within 3% deviation except for Sm and Gd. These results are also compared with the result obtained by a single comparator method using reactor neutron.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02039811
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