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  • 1
    Electronic Resource
    Electronic Resource
    Computed tomography in the postoperative patient (1980)
    Springer
    Neuroradiology 19 (1980), S. 257-263 
    Details
    ISSN: 1432-1920
    Keywords: Computed tomography ; Cerebral abscess ; Postoperative patient ; Ring enhancement
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Nine cases of patients in whom intracranial infection was suspected after operation are presented. Lesions with ring enhancement were seen in all of these patients. The differentiation of enhancement, seen as a normal postoperative phenomenon, from residual neoplasia and cerebral abscess can be difficult. This can be resolved by serial and sequential-delayed CT, and thus unnecessary re-exploration may be prevented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00347805
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Rarity of luxotonic responses in cortical visual areas of the cat (1980)
    Springer
    Experimental brain research 39 (1980), S. 125-132 
    Details
    ISSN: 1432-1106
    Keywords: Cat ; Visual cortex ; Luxotonic sustained responses
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Neuronal responses to continuous, diffuse white light or darkness were studied in cortical visual areas 17, 18, 19 and Clare-Bishop of the unanesthetized cat. In contrast to squirrel monkeys and macaques in which about 40 or 25% of the units in striate cortex are luxotonic (response to continuous light or darkness sustained〉2.0 min), all of the visual areas in the cat had fewer than 4.0% of the units exhibiting such luxotonic activity. The functional basis of this difference may be related to differences between the two species in the quantitative balance of antagonistic receptive field properties.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00237544
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Formation and gelation of titania nanoparticles from AOT reverse micelles (1997)
    Springer
    Journal of sol gel science and technology 8 (1997), S. 65-69 
    Details
    ISSN: 1573-4846
    Keywords: nanocrystalline titania powder ; microemulsions ; reverse micelles ; AOT
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Titania nanoparticles have been produced by the controlled hydrolysis of tetraisopropyltitanate (TPT) in sodium bis(2-ethylhexyl)sulfosuccinate (AOT) reverse micelles. Particle formation and aggregation were investigated by static and dynamic light scattering and the chemical species by vibrational spectroscopy. The kinetics of particle formation and aggregation were controlled by varying [H2O]/[AOT] (w 0), [H2O]/[Ti(IV)] and [AOT]/[Ti(IV)]. Nanoparticles, with diameters〈10 nm, could be produced at relatively high Ti(IV) concentrations (up to 0.05 M). These nanoparticles aggregated into sols, with colloid sizes of 20 to 200 nm, eventually forming gelatinous precipitates. Different titania phases were produced, depending on the size of the micellar water pool; small pools (w 0〈6) yielded amorphous particles, while larger pools (w 0〉10) produced anatase.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02436819
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    Paper (German National Licenses)
    Fulltext
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