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  • 1
    Electronic Resource
    Electronic Resource
    Cytochemical changes in lactate dehydrogenase isoenzymes in human brain tumours (1984)
    Springer
    Acta neurochirurgica 71 (1984), S. 243-253 
    Details
    ISSN: 0942-0940
    Keywords: Brain tumours ; LDH isoenzyme ; cytochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The lactate dehydrogenase (LDH) isoenzyme patterns in benign and malignant brain tumours were determined by means of electrophoresis of the cell extracts and selective cytochemical stain of the smears. The LDH isoenzyme distribution of the cell extracts showed a pronounced cathodal shift in the malignant gliomas and metastatic carcinomas. Normal brain tissues and histologically benign gliomas, however, showed an anodal pattern with a dominance of the H-type LDH. Schwannomas and meningiomas had a midzone isoenzyme pattern with a dominant LDH3 fraction. Pituitary adenomas usually showed the LDH pattern similar to that of the normal cerebrum. The LDH M fraction could be cytochemically verified using an inhibitory effect by 2.6 M urea in staining. Astrocytomas grades 3–4 and metastatic carcinomas were characterized by loss or marked reduction of stainability by urea treatment, while astrocytomas grades 1–2 and oligodendrogliomas were resistant to urea inhibition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01401319
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Separation theorems and minimax theorems for fuzzy sets (1980)
    Springer
    Journal of optimization theory and applications 31 (1980), S. 177-194 
    Details
    ISSN: 1573-2878
    Keywords: Fuzzy sets ; Banach spaces ; Hilbert spaces ; minimax theorems ; separation theorems
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract In this paper, we prove some theorems on fuzzy sets. We first show that, in order to demonstrate that the equality of shadows ofA andB implies the equality ofA andB, it is necessary to assume thatA andB are closed and thatS H (A)=S H (B) for any closed hyperplane hyperplaneH. We also obtain a separation theorem for two convex fuzzy sets in a Hilbert space. Finally, we investigate results relating to minimax theorems for fuzzy sets. We obtain a necessary and sufficient condition for compactness.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00934109
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    Paper (German National Licenses)
    Fulltext
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