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Digitale Medien

Caloric irregularity in experimentally induced perilymphatic fistula (1992)

Young, Y.-H. ; Nomura, Y. ; Hara, M.

Springer

European archives of oto-rhino-laryngology and head & neck 249 (1992), S. 181-184

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Details

ISSN: 1434-4726

Schlagwort(e): Perilymphatic fistula ; Floating labyrinth ; Caloric tesing ; Caloric irregularities ; Guinea pig

Quelle: Springer Online Journal Archives 1860-2000

Thema: Medizin

Notizen: Summary The term “caloric irregularity” was coined to refer to a gross irregularity in the amplitude and/or frequency of a caloric-induced nystagmus, having a variable slow-phase velocity and prolonged duration. Twelve of 46 guinea pigs with experimentally induced perilymphatic fistula had irregular responses to the ice-water caloric test 1 week after creation of a fistula. The long-term vestibular consequences in animals with caloric irregularities were either resolution and return to normal function (i.e. caloric return) or continuing deterioration to canal paresis. Morphological examination of ears with caloric irregularity revealed that there had been partial collapse of the membranous labyrinth and the creation of a floating labyrinth.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00183497

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Digitale Medien

Mechanism and process of chemomechanical contraction of polyelectrolyte gels under electric field (1990)

Kishi, R. ; Hasebe, M. ; Hara, M. ; [weitere]

New York, NY : Wiley-Blackwell

Polymers for Advanced Technologies 1 (1990), S. 19-25

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Details

ISSN: 1042-7147

Schlagwort(e): Chemistry ; Polymer and Materials Science

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie , Maschinenbau

Notizen: When a water-swollen polyelectrolyte gel is interposed between a pair of electrodes and DC current is applied, the gel undergoes electro-chemomechanical contraction and concomitant water exudation both in water and in the air. In order to clarify the mechanism of the phenomenon, contractile experiments were carried out under various conditions and led to the conclusion that the contraction is essentially associated with electrically driven movement of hydrated micro- and macroions in the gel (electrokinetic process).

Zusätzliches Material: 7 Ill.