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  • 1990-1994  (4)
  • 1910-1914
  • Pineoblastoma  (2)
  • Control  (1)
  • Craniofacial surgery  (1)
Source
Material
Years
  • 1990-1994  (4)
  • 1910-1914
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Pleomorphic pineocytoma with extensive neuronal differentiation: report of two cases (1994)
    Springer
    Acta neuropathologica 88 (1994), S. 448-453 
    Details
    ISSN: 1432-0533
    Keywords: Key words Pineal parenchymal tumors ; Pineocytoma ; Pineoblastoma ; Central neurocytoma ; Neuronal differentiation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Two pineal parenchymal tumors are presented, arising in a 54-year-old man and a 72-year-old woman; respectively. They showed isomorphic, cellular areas of small cells, often with characteristic pineocytomatous rosettes, and of medium-sized cells, as well as less cellular regions with highly pleomorphic, often ganglioid large cells. Immunohistochemistry disclosed extensive neuronal differentiation. There was intense positivity for neurofilament protein and microtubule-associated protein 2 in the pleomorphic areas and more variable expression in the isomorphic regions. Diffuse synaptophysin positivity was seen, accentuated along the borders of pleomorphic cells and in the rosettes, as well as diffuse interstitial and/or cytoplasmic expression of neuron-specific enolase, PGP 9.5 and tau. β-Tubulin III was detected in most cells and slight positivity was found in the rosettes. Expression of glial fibrillary acidic protein, however, was restricted to resident astrocytes and an interstitial network of processes. These neuronally differentiated pleomorphic pineocytomas underline the broad histomorphological spectrum of pineal parenchymal tumors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00389497
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Pleomorphic pineocytoma with extensive neuronal differentiation: report of two cases (1994)
    Springer
    Acta neuropathologica 88 (1994), S. 448-453 
    Details
    ISSN: 1432-0533
    Keywords: Pineal parenchymal tumors ; Pineocytoma ; Pineoblastoma ; Central neurocytoma ; Neuronal differentiation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Two pineal parenchymal tumors are presented, arising in a 54-year-old man and a 72-year-old woman; respectively. They showed isomorphic, cellular areas of small cells, often with characteristic pineocytomatous rosettes, and of medium-sized cells, as well as less cellular regions with highly pleomorphic, often ganglioid large cells. Immunohistochemistry disclosed extensive neuronal differentiation. There was intense positivity for neurofilament protein and microtubule-associated protein 2 in the pleomorphic areas and more variable expression in the isomorphic regions. Diffuse synaptophysin positivity was seen, accentuated along the borders of pleomorphic cells and in the rosettes, as well as diffuse interstitial and/or cytoplasmic expression of neuron-specific enolase, PGP 9.5 and tau. β-Tubulin III was detected in most cells and slight positivity was found in the rosettes. Expression of glial fibrillary acidic protein, however, was restricted to resident astrocytes and an interstitial network of processes. These neuronally differentiated pleomorphic pineocytomas under-line the broad histomorphological spectrum of pineal parenchymal tumors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00389497
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Three-dimensional spiral CT for neurosurgical planning (1994)
    Springer
    Neuroradiology 36 (1994), S. 435-439 
    Details
    ISSN: 1432-1920
    Keywords: Spiral CT ; Craniofacial surgery ; Contrast media ; 3D image processing
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We carried out 22 examinations to determine the value of three-dimensional (3D) volumetric CT (spiral CT) for planning neurosurgical procedures. All examinations were carried out on a of the first generation spiral CT. A tube model was used to investigate the influence of different parameter settings. Bolus injection of nonionic contrast medium was used when vessels or strongly enhancing tumours were to be delineated. 3D reconstructions were carried out using the integrated 3D software of the scanner. We found a table feed of 3 mm/s with a slice thickness of 2 mm and an increment of 1 mm to be suitable for most purposes. For larger regions of interest a table feed of 5 mm was the maximum which could be used without blurring of the 3D images. Particular advantages of 3D reconstructed spiral scanning were seen in the planning of approaches to the lower clivus, acquired or congenital bony abnormalities and when the relationship between vessels, tumour and bone was important.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00593678
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Social control and social contract in networking (1994)
    Springer
    Computer supported cooperative work 2 (1994), S. 89-108 
    Details
    ISSN: 1573-7551
    Keywords: TQM ; Communication ; Social Contract ; Empowerment ; Control ; Teams
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract Networks can be understood as organizational control strategies. As an example, we present two case studies of team-based networking strategies associated with the Total Quality Management movement in the United States. TQM's implied social contract requires some form of power sharing. In practice TQM team organization can also become another form of labor intensification. Similarly, TQM appeals to democratic values by emphasizing participation, communication, cooperation and team work. Such claims can also serve to legitimize major organizational changes, some of which follow familiar Taylorist patterns. Two cases illustrate how the technical components of communications systems help redefine control systems in TQM-based work rerganization experiments. In the manufacturing setting, communications took the form of web-and-hub networks, centralizing off-site engineering control of production workers. In the design and engineering workplace, peer-to-peer communications implemented by self-managed teams reduced intellectual ‘slack time’. In both cases the communications systems provided means to intensify labor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00749285
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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