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  • 1
    Electronic Resource
    Electronic Resource
    Posterior cranial fossa dural arteriovenous malformation with a varix mimicking a thrombosed aneurysm: case report (1993)
    Springer
    Neuroradiology 35 (1993), S. 210-211 
    Details
    ISSN: 1432-1920
    Keywords: Dural arteriovenous malformation ; Posterior cranial fossa ; Varix ; Computed tomography ; Magnetic resonance imaging ; Thrombosed aneurysm
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Dural arteriovenous malformations (AVMs) in the posterior cranial fossa are relatively infrequent. Intradural haemorrhage is one of their specific complications. Angiographic demonstration of varices or aneurysmal structures is one of the hallmarks of severe cases. We report a patient with posterior cranial fossa dural AVM associated with a varix mimicking a thrombosed aneurysm on CT and MRI. Internal carotid and vertebral angiography failed to demonstrate an aneurysm, but external carotid injection revealed a dural AVM affecting the sigmoid sinus, and a varix. The AVM was completely eliminated by embolization. When a dural AVM is suspected clinically selctive angiography should be performed to confirm the diagnosis even when CT or MRI do not show dilated vessels.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00588496
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Acquired epidermoid tumour in the thoracic spinal canal (1993)
    Springer
    Neuroradiology 35 (1993), S. 316-318 
    Details
    ISSN: 1432-1920
    Keywords: Epidermoid tumour ; Iatrogenic lesion ; Thoracic spine ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Acquired spinal epidermoid tumours are rare, and probably caused by skin fragments that have been transplanted by trauma or lumbar puncture. They almost always occur in the region of the cauda equina. We present an acquired spinal epidermoid tumour at the T 10 level, with pathological confirmation. A skin fragment had migrated to a site where it developed into a tumour.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00602624
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Polymerization of amphiphilic quaternary ammonium salts of acrylic, methacrylic, and ethacrylic acids (1995)
    Springer
    Colloid & polymer science 273 (1995), S. 733-739 
    Details
    ISSN: 1435-1536
    Keywords: Polymerizable amphiphiles ; cationic surfactants ; micelles ; (meth) acrylates ; radical polymerization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The polymerization behavior of dodecyltri-methylammonium methacrylate, and hexadecyltrimethylammonium acrylate, methacrylate and ethacrylate as amphiphilic monomers bearing a polymerizable double bond outside the micelle shell was investigated in micellar solution. Although the monomers did not have spontaneous polymerizability, they polymerized in the presence of both oil-soluble and water-soluble radical initiators, in spite of the difference of the expected location solubilizing initiator molecules. The profit based on micelle-forming of the monomer on the polymerization in water disappeared by the addition of sodium chloride into the polymerizing system due to the increased dissociation between cationic micelles and the polymerizable counter ions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00658751
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Phospholipase activity in Cryptococcus neoformans (1996)
    Springer
    Mycopathologia 136 (1996), S. 119-123 
    Details
    ISSN: 1573-0832
    Keywords: Cryptococcus neoformans ; phospolipase ; virulence ; AIDS
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Phospholipases have only been detected in a few fungi and yeasts, in particular in Candida albicans. Secreted phospholipases are considered by some researchers to be a potential factor of virulence and pathogenicity in C. albicans. Twenty-three Cryptococcus neoformans strains were tested in order to observe phospholipase production. Twenty-two of the 23 strains tested were able to produce phospholipases, and the ratio diameter of the colony to total diameter of the colony plus zone of precipitation (Pz) ranged between 0.271 and 0.949. C. neoformans, just like C. albicans, can be divided on the basis of the Pz into different strains according to their virulence and pathogenicity. There also appeared to be a correlation between the phospholipase production and the size of the capsule in the strains isolated from AIDS patients. For this reason, further studies on C. neoformans phospholipase activity would be useful in evaluating the virulence of different strains.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00438916
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    Paper (German National Licenses)
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