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  • 1985-1989  (4)
  • Polymer and Materials Science  (2)
  • Suckling mice  (2)
Datenquelle
Materialart
Erscheinungszeitraum
Jahr
Schlagwörter
  • 1
    Digitale Medien
    Digitale Medien
    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
    Schlagwort(e): 6-Aminonicotinamide ; Ependymal cell ; Mitosis ; Suckling mice ; Ultrastructure
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00689516
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  • 2
    Digitale Medien
    Digitale Medien
    Aqueductal lesions in 6-aminonicotinamide-treated suckling mice (1986)
    Springer
    Acta neuropathologica 71 (1986), S. 243-250 
    Details
    ISSN: 1432-0533
    Schlagwort(e): 6-Aminonicotinamide ; Aqueduct “agenesis” ; Ependymal cell ; Hydrocephalus ; Suckling mice
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Suckling mice which received a single intraperitoneal injection of 6-aminonicotinamide on the 5th postnatal day, consistently developed hydrocephalus. During the early stages of hydrocephalus (7–9 days after injection), aqueductal lesions were characterized by edematous ependymal and subependymal cells, and spongy changes in the periaqueductal area, which resulted in aqueduct stenosis. Later stages (after 20 days post-injection) showed that these edematous changes totally subsided, leaving an obliterated aqueduct which was similar to that of human congenital hydrocephalus. At the completely obliterated area, ultrastructural investigation disclosed a normal-looking neuropil but no aqueductal lumen. In the remaining ependymal cell, increased intermediate filaments and lipid droplets occurred. These data suggest that acute ependymal cell degeneration during the perinatal period may result in the profile of aqueduct “agenesis” in human congenital hydrocephalus.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00688046
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  • 3
    Digitale Medien
    Digitale Medien
    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
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: 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.
    Zusätzliches Material: 3 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/pola.1987.080250616
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  • 4
    Digitale Medien
    Digitale Medien
    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
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Maschinenbau , Physik
    Notizen: 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.
    Zusätzliches Material: 6 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/app.1986.070310808
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