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  • 1
    Digitale Medien
    Digitale Medien
    A re-examination of otoconia from the Shaker mouse (1985)
    Springer
    European archives of oto-rhino-laryngology and head & neck 242 (1985), S. 83-87 
    Details
    ISSN: 1434-4726
    Schlagwort(e): Shaker mouse ; Otoconia ; Calcite ; Hydroxylapatite
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary We have studied saccular and utricular otoconia from Shaker-1 and Shaker-2 mice by X-ray diffraction and scanning electron microscopy. In contrast to previous reports, we found that the crystals were composed of calcite rather than poly crystalline hydroxylapatite. These crystals were indistinguishable mineralogically and morphologically from normal mouse otoconia. The reported occurrence of hydroxylapatite otoconia in the Shaker mouse is probably false.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00464412
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  • 2
    Digitale Medien
    Digitale Medien
    The amorphous phase in high-speed spun PET fibers (1993)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 31 (1993), S. 1339-1345 
    Details
    ISSN: 0887-6266
    Schlagwort(e): poly(ethylene terephthalate) ; series-parallel model ; series-aggregate model ; high-speed spinning ; Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Physik
    Notizen: Two phenomenogical descriptions of oriented semicrystalline polymers, the series-parallel model and the series-aggregate model, were applied to poly(ethylene terephthalate) (PET) fibers obtained at different spinning speeds. The mechanical behavior of the fibers conformed well to both models. The analyses indicate that PET fibers obtained by high-speed spinning possess a more compliant interfibrillar amorphous phase. This feature may account for both the greater dimensional stability, as well as the more reversible mechanical behavior, exhibited by high-speed spun PET. © 1993 John Wiley & Sons, Inc.
    Zusätzliches Material: 3 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/polb.1993.090311009
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  • 3
    Digitale Medien
    Digitale Medien
    Transverse heterogeneity in PET fibers (1993)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 31 (1993), S. 1331-1337 
    Details
    ISSN: 0887-6266
    Schlagwort(e): poly(ethylene terephthalate) ; transverse heterogeneity ; crystallinity ; high speed spinning ; Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Physik
    Notizen: X-ray scattering from a series of poly(ethylene terephthalate) (PET) fibers spun at differet speeds is analyzed to probe the morphology in the direction transverse to the fiber axis. Both the apparent crystal modulus, determined from the change in wide-angle X-ray scattering angle with fiber stretching, and the transverse degree of crystallinity indicate there is a substantial interfiberillar amorphous content. In the PET fiber spun at conventional speeds, only roughly one-quarter of the fiber cross-section is actually occupied by fibrils. The transverse crystallinity increases for fibers spun at speeds sufficient to cause crystallization in the spin line. The X-ray moduli and fibril diameters are correspondingly larger in these high speed spun fibers. © 1993 John Wiley & Sons, Inc.
    Zusätzliches Material: 5 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/polb.1993.090311008
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