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Digitale Medien

Autolysis of the granular layer of the cerebellar cortex in brain death (1986)

Ogata, J. ; Yutani, C. ; Imakita, M. ; [weitere]

Springer

Acta neuropathologica 70 (1986), S. 75-78

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ISSN: 1432-0533

Schlagwort(e): Cerebellum ; Granular layer ; Autolysis ; Brain death

Quelle: Springer Online Journal Archives 1860-2000

Thema: Medizin

Notizen: Summary In a study of duration of brain death, granular layer autolysis (GLA) of the cerebellar cortex was analyzed in 45 patients who died of acute cerebrovascular diseases (CVDs). Twelve patients who died of causes other than intracranial disease served as controls. Tonsillar herniation occurred in all who died of acute CVDs. More advanced GLA was seen in the central folia adjacent to the central white medullary body of the cerebellum as compared with the peripheral folia. Widespread GLA involving the most of the peripheral folia was found solely in patients in whom brain death had been present over 18 h. Of the 12 control patients, 4 showed GLA only in the central folia. Although GLA of the central folia might develop during immersion fixation of the brain, the alteration of the peripheral folia is assumed to develop in the period of brain death. Widespread GLA extending to the peripheral folia could be a pathological finding characteristic of brain death, where intracranial blood flow could be absent or significantly reduced. Brain death for little less than 1 day would be necessary for GLA to develop.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00689517

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Digitale Medien

Characterization of mixtures of linear polyethylenes of ultrahigh and moderate molecular weights (1986)

Ueda, H. ; Karasz, F. E. ; Farris, R. J.

Stamford, Conn. [u.a.] : Wiley-Blackwell

Polymer Engineering and Science 26 (1986), S. 1483-1488

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Details

ISSN: 0032-3888

Schlagwort(e): Chemistry ; Chemical Engineering

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie , Maschinenbau , Physik

Notizen: The crystallinity, density, dynamic mechanical properties, (25 to 250°C, 11 Hz), and tensile properties at 25°C have been studied for two mixtures of ultrahigh-molecular-weight linear polyethylene (Mw = 2.0 × 106), abbreviated UHMWLPE, and moderate-molecular-weight linear polyethylene (Mw = 5.7 × 104), abbreviated LPE. These mixtures, which covered the entire composition range, had been prepared with differing solvent-thermal histories. An enhancement of both crystallinity and density and an obvious synergism in tensile properties were observed for quenched films made from the mixture in which both components had been co-dissolved. The data indicate that UHMWLPE and LPE can cocrystallize under given circumstances.

Zusätzliches Material: 9 Ill.