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  • 1995-1999  (3)
  • 5HT2 receptor  (1)
  • Dynamic control  (1)
  • Key words Epidural teratoma  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Effects of antidepressants and antipsychotics on the 5HT2 receptor-mediated signal transducing system in human platelets (1995)
    Springer
    Psychopharmacology 121 (1995), S. 428-432 
    Details
    ISSN: 1432-2072
    Keywords: 5HT2 receptor ; 3H-Ketanserin binding ; Ca2+ ; Platelet shape change ; 3H-Paroxetine binding
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The IC50 values of the antidepressants amoxapine, mianserin, desipramine, clomipramine and imipramine, and the antipsychotics spiroperidol, chlorpromazine, levomepromazine and haloperidol for3H-ketanserin binding, 5HT-induced intracellular Ca2+ increase, 5HT-induced shape change and3H-paroxetine binding in human plateletes were measured and the correlations of each parameter were examined. Results were as follows. Both the antidepressants and the antipsychotics had inhibitory effects on3H-ketanserin binding, 5HT-induced intracellular Ca2+ increase and 5HT-induced shape change and there were significant positive correlations between the IC50 values of these three parameters. On the other hand, there were no significant correlations between the IC50 values in3H-paroxetine binding and those in the other three parameters. These results suggest that3H-ketanserin binding, 5HT-induced intracellular Ca2+ increase and 5HT-induced shape change are useful and reliable tools for the assessment of the effects of the antidepressants and the antipsychotics on the 5HT2 receptor-mediated signal transducing system in human platelets.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02246490
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Dynamic control of redundant manipulators using the artificial potential field approach with time scaling (1999)
    Springer
    Artificial life and robotics 3 (1999), S. 79-85 
    Details
    ISSN: 1614-7456
    Keywords: Artificial potential field approach ; Dynamic control ; Redundant manipulator ; time-base generator ; Time-scale transformation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract This paper proposes a new method for the dynamic control of redundant manipulators via the artificial potential field approach. In the artificial potential field approach, the goal is represented by an artificial attractive potential field and the obstacles by corresponding repulsive field, so that the trajectory to the target can be associated with the unique flow-line of the gradient field through the initial position and can be generated via a flow-line tracking process. This approach is suitable for real-time motion planning because of its simplicity and smaller computational time than other methods based on global information about the task space. However, little attention has been paid to the control of the dynamic behavior of the trajectories generated. The proposed method is based on the artificial potential field approach with a combination of a time-scale transformation and a time-base generator which works as a time-scale compressor and can control the dynamic behavior of the robot without any change in the form of the designed controller itself. It can also be applied to the dynamic motion planning problem of redundant manipulators. The effectiveness of the proposed method is verified by computer simulations for a three-joint planar manipulator.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02481251
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Extensive epidural teratoma in early infancy treated by multi-stage surgery (1999)
    Springer
    Pediatric surgery international 15 (1999), S. 280-283 
    Details
    ISSN: 1437-9813
    Keywords: Key words Epidural teratoma ; Infant ; Laminotomy ; Mediastinal teratoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report a rare case of extensive extradural teratoma successfully treated by multi-stage laminotomy and thoracotomy. A 34-day-old, dyspneic infant had a large posterior mediastinal mass identified on a chest X-ray radiograph. Imaging studies disclosed that the mass originated from the extradural space at the level of the lower thoracic spine, extending cephalad to C4 and caudad to L4 and severely compressing the spinal cord anteriorly, causing paraplegia. The tumor expanded bilaterally through the intraspinal foramina, coalescing to form a huge mediastinal mass. The upper half of the teratoma was removed utilizing a laminotomy from T3 through T9; 2 months later the lower half was excised via a laminotomy from T11 to L3. An additional procedure was required to resect recurrent tumor through a laminotomy from T8 to T12. The reconstructed vertebral arches were well-preserved in shape, with an almost normal spinal canal.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003830050578
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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