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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Langmuir 8 (1992), S. 2846-2847 
    ISSN: 1520-5827
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 94 (1972), S. 7589-7590 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Biochemistry 13 (1974), S. 3250-3253 
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The relationship between the distribution of benthic diatoms and sediment characteristics of the Mangyung-Dongjin tidal flat on the west coast of Korea was investigated during June and July 1988. Diatoms were collected from the upper 5 mm of sediments at 60 sites along eight transect lines running perpendicular to the shore line. Of the 371 taxa encountered in the study area, 88% were pennate diatoms. Genera represented by the greatest number of species were Navicula, Nitzschia, Amphora, Cocconeis, Fragilaria and Achnanthes. The most abundant species were Paralia sulcata, Navicula sp. #1, N. arenaria and Cymatosira belgica; all were broadly distributed across the tidal flats. The 60 sites could be assigned to eight clusters with respect to similarity in species composition. Discriminant analysis showed that separation cluster was primarily related to the mean grain size of the sediment. The species could not be separated into groups based on similarities in occurrence; a high degree of spatial overlap was observed. The preferences of the more abundant species for grain size were, therefore, analysed by plotting numerical abundance against mean grain size. There were at least four patterns: species groups could be associated with finegrained sediments, those of intermediate size and coarser sediments and the last group showed no discernible pattern.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Experimental brain research 120 (1998), S. 109-113 
    ISSN: 1432-1106
    Keywords: Key words Nitric oxide synthase ; GABA ; Retina ; Rabbit ; Rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  In rabbit and rat retinae, wholemounted preparations and 40 μm thick vibratome sections were processed for nitric oxide synthase (NOS) immunoreactivity and consecutive semithin sections were immunostained with anti-NOS and anti-GABA antisera, respectively. Two types of NOS-labelled amacrine cells were identified: type 1 cells with larger somata were intensely stained, and type 2 cells with smaller somata were weakly stained. A few displaced amacrine cells also showed NOS-like immunoreactivity. All these NOS-like immunoreactive neurons also expressed GABA-like immunoreactivity. Thus, nitric-oxide-containing neurons might constitute a subpopulation of GABAergic neurons in rabbit and rat retinae.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1432-1106
    Keywords: Key words Glial fibrillary acidic protein ; Müller cell ; Increased intraocular pressure ; Retina ; Rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Using light microscopy and immunocytochemistry, we investigated the morphological changes of retinal tissues and the reaction of Müller cells in the ischemic rat retina induced by increasing intraocular pressure. At early stages (from 1 h to 24 h after reperfusion), cells in the ganglion cell layer and in the inner nuclear layer showed some degenerative changes, but at later stages (from 72 h to 4 weeks) marked degenerative changes occurred in the outer nuclear layer (ONL). At 4 weeks after reperfusion, the ONL was reduced to 1 or 2 cell layers. Immunoreactivity for glial fibrillary acidic protein (GFAP) appeared in the endfeet and distal processes of Müller cells as of 1 h after reperfusion. GFAP immunoreactivity in Müller cells increased up to 2 weeks and then decreased at 4 weeks after reperfusion. Our findings suggest that Müller cells are involved in the pathophysiology of retinal ischemia through the expression of GFAP. The degree of GFAP expression in Müller cells closely correlated with that of the degeneration of retinal neurons.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Acta neurochirurgica 39 (1977), S. 63-70 
    ISSN: 0942-0940
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary This is the description of the case of a 22 year old patient with low back pain and sciatica on the right side investigated by lumbar Dimer-X-Myelography. The result of the examination was an impression in the contrast column at the L 5/S 1 level on the right. At operation an intradural tumour, plum-sized, well-defined, and blue-black in colour, was found and removed. Histologically the tumour was melanotic and of high cellular density, with spindle-shaped cells as well as giant cells, with round nuclei, considerable polymorphism, and atypical mitoses. On the basis of the operation finding, the clinical course, and the histology, the diagnosis is melanotic nerve sheath tumour of the first sacral root. For two years following operation the patient has experienced no discomfort.
    Notes: Zusammenfassung Es wird der Fall eines 22jährigen Patienten beschrieben, welcher wegen einer 7jährigen Anamnese einer Lumboischialgie rechts durch eine lumbale Dimer-X-Myelographie abgeklärt wurde. Die Untersuchung ergab den Befund einer Eindellung der Kontrastmittelsäule auf Höhe L 5/S 1 rechts. Bei der Operation fand sich ein intradural gelegener, pflaumengro\er, gut begrenzter, blauschwarz gefärbter Tumor, welcher entfernt wurde. Histologisch stellt sich ein zellreiches, melanotisches Tumorgewebe dar, in dem sowohl spindelförmige Zellen wie auch kubische gro\leibige Zellen mit rundlichen Kernen mit beträchtlicher Kernpolymorphie und vorhandenen atypischen Mitosen zu erkennen sind. Auf Grund des Operationsbefundes, des klinischen Verlaufes und des histologischen Befundes wird ein melanotischer Nervenscheidentumor der Wurzel S 1 rechts angenommen. Der Patient ist während der bisherigen 17monatigen postoperativen Periode beschwerdefrei geblieben.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Acta neurochirurgica 56 (1981), S. 95-98 
    ISSN: 0942-0940
    Keywords: Displaced odontoid fracture ; acrylic prostheses ; posterior fixation ; older patients
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Non-union of odontoid process fractures with displacement in old patients have been treated operatively with compact stable acrylic fixation. Immediate mobilization without external fixation was achieved.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Acta neurochirurgica 68 (1983), S. 111-121 
    ISSN: 0942-0940
    Keywords: Morphological study ; depressed fracture ; skull
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Ninety-eight cases of depressed skull fractures, caused by various accidents, were treated. The morphological structures of the fractures were studied. Thirty-four depressed fractures were established experimentally, and a comparable study was performed. Clinically and experimentally I confirmed the same morphological reactions, that is, that the fractures of the inner region were always larger than those of the outer side, as a result of the direction of the impacting forces. The human skull suffers depressed fractures only because it has “HSH” (hard-soft-hard) histological structures. It is naturally disadvantaged.
    Type of Medium: Electronic Resource
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