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  • 1985-1989  (4)
  • Polymer and Materials Science  (2)
  • Ultrastructure  (2)
  • Aging
  • 1
    Electronic Resource
    Electronic Resource
    Ultrastructural evidence of mitotic ependymal cells in 6-aminonicotinamide-treated suckling mice (1986)
    Springer
    Acta neuropathologica 70 (1986), S. 71-74 
    Details
    ISSN: 1432-0533
    Keywords: 6-Aminonicotinamide ; Ependymal cell ; Mitosis ; Suckling mice ; Ultrastructure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Mitotic ependymal cells were encountered in 10-day-old mice treated with 6-aminonicotinamide, an antagonist of niacin. These occurred along the medial surface of the lateral ventricle and the ventral portion of the aqueduct. Electron microscopy revealed that both mitotic ependymal cells had eccentrically placed chromosomes without a nuclear membrane and well-formed gap junctions in contact with adjacent ependymal cells. Microtubules from a centriole radiated to the chromosomes. These data show that cell division occurs in morphologically matured ependymal cells in the postnatal brain under pathological conditions. We believe this to be the first ultrastructural demonstration of this phenomenon.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00689516
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    A case of adult neuronal ceroid-lipofuscinosis with the appearance of membranous cytoplasmic bodies localized in the spinal anterior horn (1987)
    Springer
    Acta neuropathologica 72 (1987), S. 362-368 
    Details
    ISSN: 1432-0533
    Keywords: Neuronal ceroid-lipofuscinosis ; Membranous cytoplasmic body ; Ultrastructure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary An autopsy case of adult neuronal ceroid-lipofuscinosis was examined. The clinical picture was charaterized by gait disturbance, bulbar palsy and dementia. Histopathologically, diffuse neuronal loss was found throughout the central nervous system. The remaining neurons, predominantly in the motor nuclei of the spinal cord and brain stem, were swollen with storage material. Observed under the electron microscope the storage material showed various ultrastructures, such as lipofuscin-like bodies, pleomorphic lipid bodies, curvilinear profiles and finger-print profiles, in different regions of the central nervous system. In the ballooned neurons of the spinal anterior horn, many membranous cytoplasmic bodies and curvilinear profiles were intermingled within the same cell and were continuous with each other. Biochemically,N-acetyl neuraminic acid content was significantly increased in the spinal anterior horn. These findings suggest the localized increase of ganglioside in that region.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00687268
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Highly wettable films plasma-polymerized from ethylene oxide (1987)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 25 (1987), S. 1633-1639 
    Details
    ISSN: 0887-624X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Highly wettable films were prepared by plasma-polymerization from ethylene oxide. The surface energy of the formed films is 65.6 dyn/cm, and the contact-angle of water on the films is 12 degrees. The formation of highly wettable films is limited to the plasma-polymerization conducted at low W/FM values of below 200 MJ/kg. Analyses by infrared spectroscopy and ESCA show that the formed films contain much oxygen residues such as C—O, C—O, and C(O)—O— groups. Such polar groups would contribute high wettability of the plasma-films from ethylene oxide.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pola.1987.080250616
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Capacitive moisture sensor devices from plasma films (1986)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 31 (1986), S. 2473-2481 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Polymeric films were deposited on Al2O3 ceramic substrates by plasma deposition from trimethylsilyldimethylamine (TMSDMA) and bis(dimethylamino)methylvinylsilane (BDMAMVS), and their capacitance-relative humidity characteristics investigated. Films doped with methylbromide showed a linear dependence of log(capacitance) with relative humidity over the range 20-90% suggesting application on a moisture sensor device. Hysterisis effects were negligible and the response time was within 1 min.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1986.070310808
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    Paper (German National Licenses)
    Fulltext
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