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  • 1
    Electronic Resource
    Electronic Resource
    Hyperosmolarity response of ocular standing potential as a clinical test for retinal pigment epithelium activity rhegmatogenous retinal detachment (1984)
    Springer
    Documenta ophthalmologica 57 (1984), S. 175-180 
    Details
    ISSN: 1573-2622
    Keywords: retinal detachment ; standing potential ; hyperosmolarity response ; light peak/dark trough (L/D) ratio ; electro-oculogram (EOG)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The hyperosmolarity response of the ocular standing potential was recorded in unilateral rhegmatogenous retinal detachment (8 eyes) and in the fellow ‘healthy’ eye (8 eyes). The hyperosmolarity response was greatly suppressed (M-4 SD: M and SD indicate respectively the mean and the standard deviation in normal subjects) in all affected eyes (p 〈 0.005), and slightly abnormal in 2 fellow eyes. The L/D ratio was normal in 2 affected eyes and in all fellow eyes. The hyperosmolarity response in the affected eyes was still greatly suppressed 14 months after successful surgical treatment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00143081
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Hyperosmolarity response of ocular standing potential as a clinical test for retinal pigment epithelium activity chorioretinal dystrophies (1984)
    Springer
    Documenta ophthalmologica 57 (1984), S. 163-173 
    Details
    ISSN: 1573-2622
    Keywords: retinal pigment epithelium (RPE) ; standing potential ; hyperosmolarity response ; retinitis pigmentosa ; central and pericentral retinitis pigmentosa ; pigmented paravenous retinochoroidal atrophy ; fundus albipunctatus ; Stargardt's disease ; fundus flavimaculatus ; light peak/dark trough (L/D) ratio ; Diamox response ; electro-oculogram(EOG)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The hyperosmolarity response of the standing potential was recorded in retinitis pigmentosa (20 eyes), central (pericentral) retinitis pigmentosa (4 eyes), pigmented paravenous retinochoroidal atrophy (2 eyes), fundus albipunctatus (8 eyes), and Stargardt's disease (or fundus flavimaculatus) (14 eyes). The light peak/dark trough ratio (the L/D ratio) and the Diamox response were also determined. The hyperosmolarity response was greatly suppressed (less than M-4SD; M and SD indicate respectively the mean and the standard deviation in normal control subjects) in all examined eyes with retinitis pigmentosa (20 eyes) including retinitis pigmentosa sine pigmento (8 eyes), central (pericentral) retinitis pigmentosa (4 eyes), and pigmented paravenous retinochoroidal atrophy (2 eyes). The L/D ratio was larger than 1.26 (M-2.5 SD) in the half of the eyes with the above-described diseases. The hyperosmolarity response was abnormal (less than M-2 SD) in 4 of 8 eyes with fundus albipunctatus. The L/D ratio was normal in all 8 eyes. The hyperosmolarity response was abnormal (less than M-2 SD) in all 14 eyes with Stargardt's disease or fundus flavimaculatus. The L/D ratio was abnormal in 5 of these 14 eyes. The hyperosmolarity response was more frequently abnormal than the L/D ratio in the chorioretinal dystrophies mentioned above, and hence is useful particularly for early diagnosis of these disorders.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00143080
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  • 3
    Electronic Resource
    Electronic Resource
    Hyperosmolarity response of ocular standing potential as a clinical test for retinal pigment epithelium activity Diabetic retinopathy (1984)
    Springer
    Documenta ophthalmologica 58 (1984), S. 375-384 
    Details
    ISSN: 1573-2622
    Keywords: diabetic retinopathy ; standing potential ; hyperosmolarity response ; Diamox response ; light peak/dark trough (L/D) ratio ; electro-oculogram (EOG)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The hyperosmolarity response, a drug-induced response from the retinal pigment epithelium, was recorded in diabetic retinopathy. The hyperosmolarity response was occasionally abnormal at the pre-retinopathic stage and at the first stage of retinopathy by Scott classification. The response was frequently abnormal at the second and third stages of retinopathy. The hyperosmolarity response is useful for early diagnosis of pigment epitheliopathy in diabetes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00679800
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  • 4
    Electronic Resource
    Electronic Resource
    Characteristic interaction of Ca2+ ions with elastin coacervate: Ion transport study across coacervate layers of α-elastin and elastin model polypeptide, (Val-Pro-Gly-Val-Gly)n (1996)
    New York : Wiley-Blackwell
    Biopolymers 39 (1996), S. 189-198 
    Details
    ISSN: 0006-3525
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Ion transport characteristics across a macrocoacervate layer membrane composed of aqueous elastin model polypeptides with a specific repeating pentapeptide sequence, H-(Val-Pro-Gly-Val-Gly)n-Val-OMe (n ≥ 40), were investigated. Transmembrane potential responses for NaCl, MgCl2, and CaCl2 concentration-cell systems were measured and examined systematically by comparing with those across a coacervate membrane composed of bovine neck ligamental α-elastin. In the case of the NaCl and MgCl2 systems, potential responses across these protein liquid membranes were different noticeably from each other depending upon the molecular structure with and without charged peptide side chains, whereas in the CaCl2 systems the transmembrane potential responses across the noncharged polypentapeptide coacervate membrane were comparable with those across the α-elastin coacervate membrane carrying both the positively and negatively charged amino acid residues as an amphoteric ion-exchange membrane. These results indicated that mechanisms of major Ca2+ ion transport are based on the specific and selective interactions with electrically neutral sites of elastin, such as the polypentapeptide backbone chain. © 1996 John Wiley & Sons, Inc.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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    Paper (German National Licenses)
  • 5
    Electronic Resource
    Electronic Resource
    Stereospecific polymerization of acetaldehyde by R2AlOR′ catalyst (1973)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 11 (1973), S. 1421-1434 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Stereospecific polymerization of acetaldehyde was examined by using four possible purified diethylaluminum butoxides, (Et2AlOBu)2 [Bu = n-, i-, sec-, or tert-Bu], as catalyst. These catalysts gave isotactic polyacetaldehyde quantitatively irrespective of the degree of branching of the butyl group, only when an optimum amount of water (about 0.03 mole/mole of catalyst) was added to the purified acetaldehyde monomer. Quite similar results were obtained for organozinc catalysts. These results indicate that water is an indispensable cocatalyst in the polymerization reaction with organoaluminum and zinc catalysts. An novel coordinate cationic mechanism was proposed for the stereospecific polymerization of acetaldehyde with organoaluminums, based on the above phenomena and on the inactivation of the catalyst by forming a complex with a strong Lewis base.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1973.170110625
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  • 6
    Electronic Resource
    Electronic Resource
    Exoelectron-Microscopic observations of mechanically damaged surfaces (1990)
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 16 (1990), S. 397-398 
    Details
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/sia.740160183
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    Paper (German National Licenses)
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