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  • 1
    Electronic Resource
    Electronic Resource
    Soft x-ray beamline BL7A at the UVSOR : Proceedings of the 4th international conference on synchrotron radiation instrumentation (1992)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 63 (1992), S. 1309-1312 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A vacuum-compatible double-crystal monochromator with constant exit-beam height has been installed and operated for several years at beamline BL7A at the UVSOR facility at the Institute for Molecular Science, Okazaki, Japan, The beamline is used both for the photons from a normal bending-magnet section and those from a 4 T superconducting three-pole horizontal wiggler. Various pairs of monochromator crystals are being used with sufficient intensity and signal to noise ratio of the output signal. Basic structure of the beamline, the mechanism of the monochromator, and some typical spectra of materials with absorption edges between 850 eV and 4 keV are reported.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1143054
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Craniopharyngiomas with unusual topography and associated with vascular pathology (1980)
    Springer
    Acta neurochirurgica 53 (1980), S. 53-68 
    Details
    ISSN: 0942-0940
    Keywords: Cerebral angiography ; craniopharyngioma ; computed tomography ; third ventricle tumour
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Out of 155 cases of craniopharyngioma seen in the past 47 years, 19 are considered unusual. These 19 cases have been placed under the following headings— 1. unusual topography, and 2. associated vascular pathology. Since CT scanning offers important information about extension of craniopharyngiomas, it is very helpful for planning operative approach. However, cerebral angiography is still important for demonstrating vascular pathology.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02074521
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The significance of periventricular lucency on computed tomography: Experimental study with canine hydrocephalus (1981)
    Springer
    Neuroradiology 20 (1981), S. 221-227 
    Details
    ISSN: 1432-1920
    Keywords: Computed tomography ; Hydrocephalus ; Periventricular lucency
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In order to investigate the pathogenesis of periventricular lucency (PVL) in hydrocephalus, CT scans were performed with monitoring of the epidural pressure in a series of dogs with hydrocephalus induced with kaolin. PVL of various degrees was detected in the experimental animals, which disappeared immediately after a shunting operation. Correlations have been attempted between PVL on CT scans and histological examinations, contrast enhancement studies, metrizamide ventriculography, and measurement of regional cerebral blood flow in the periventricular white matter. PVL in hydrocephalus is considered to represent acute edema or chronic CSF retention in the periventricular white matter caused by an increase of water content. In other words, it is regarded as a sign of existing or preceding intraventricular hypertension on CT scan, and seems to be a reversible phenomenon to some extent. PVL may therefore became an indication for a shunt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00342088
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Plant regeneration from mesophyll protoplasts of Moricandia arvensis (1992)
    Springer
    Plant cell reports 11 (1992), S. 408-411 
    Details
    ISSN: 1432-203X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Moricandia arvensis is of interest as it is a dicotyledonous species which has C3 — C4 intermediate photosynthesis, a mechanism which results in enhanced recapture of photorespired CO2. Leaves from cultured shoot tips were used as a source for mesophyll cell protoplasts. Approximately 1% of the protoplasts which survived the first few days of culture produced calli. On a suitable regeneration medium, 30–60% of the calli regenerated one or more shoots. From among the regenerating shoots eight were selected, transferred to soil and grown to flowering in the glasshouse; all were fertile. The development of a protoplast regeneration system provides the opportunity to use transformation and somaclonal variation as tools in the genetic analysis of the C3–C4 character in this species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00234371
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Oscillatory binocular system and temporal segmentation of stereoscopic depth surfaces (1993)
    Springer
    Biological cybernetics 68 (1993), S. 381-391 
    Details
    ISSN: 1432-0770
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Computer Science , Physics
    Notes: Abstract A dynamical neural network model of binocular stereopsis is proposed to solve the problem of segmentation which remains ambiguous even when the problem of binocular correspondence is solved. Being compatible with the recent neurophysiological findings (Engel et al. 1991), the model assumes that neural cells show oscillatory activities and that segmentation into a coherent depth surface is coded by synchronization of activities. Employing appropriate constraints for segmentation, the present model shows proper segmentation of depth surfaces and also solves segmentational ambiguity caused by a gap. It is newly shown that binocularly-unmatched monocular cells are discriminated in temporal segmentation of monocular cells caused by recurrent interactions between monocular and binocular cells. Integrative interactions with the other visual components through temporal segmentation are also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00198771
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  • 6
    Electronic Resource
    Electronic Resource
    Reduction and fusion of severe spondylolisthesis using halo-pelvic traction with a wire reduction device (1980)
    Springer
    International orthopaedics 4 (1980), S. 107-113 
    Details
    ISSN: 1432-5195
    Keywords: Severe spondylolisthesis ; Reduction ; Fusion ; Halo-pelvic apparatus ; Wire reduction device
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Sept patients présentant un spondylolisthésis de degré III ou IV ont été traités par réduction du déplacement par traction, suivie d'arthrodèse corporéale par voie antérieure. Chez les deux sujets les plus jeunes (12 et 16 ans) une réduction parfaite a été obtenue par la seule traction halo-pelvienne. Cependant, les cinq autres cas ont nécessité une traction directe par fil (par voie postérieure) en plus de la traction halo-pelvienne ou fémorale. Le traitement terminé, tous les malades présentaient une fusion solide ainsi qu'une disparition complète de tous leurs symptômes.
    Notes: Summary Seven patients with severe lumbosacral spondylolisthesis were treated by reduction of the displacement followed by stabilisation by anterior interbody fusion. In the two youngest patients full reduction was achieved by halo-pelvic traction. In the remainder halo-pelvic or femoral traction was combined with a posterior wire reduction device. All patients achieved a sound fusion with complete remission of symptoms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00271093
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    Paper (German National Licenses)
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