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  • Electronic Resource  (4)
  • Polymer and Materials Science  (3)
  • Intrinsic connections  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Evidence for excitatory amino acid neurotransmitters in the geniculo-cortical pathway and local projections within rat primary visual cortex (1992)
    Springer
    Experimental brain research 89 (1992), S. 20-30 
    Details
    ISSN: 1432-1106
    Keywords: Vision ; Excitatory amino acids ; Thalamocortical connections ; Intrinsic connections ; Visual cortex ; Rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary To examine the organization of axon collaterals of neurons that selectively take up and transport excitatory amino acids, we have used retrograde tracing with D-[3H]Aspartate after injections into different layers of rat primary visual cortex. The results show cells in the lateral geniculate nucleus retrogradely labeled from the cortex. Additional topographically precise input to the thalamic recipient layer 4 originates from neurons in the visual cortex lying in layers 2/3, 5 and 6. These inputs are reciprocated by point-to-point projections from layer 4. Layer 2/3 cells project to layers 5 and 6 in columnar fashion. Putative excitatory input to layer 2/3 originates from a vertical column of cells in layer 5 and the middle of layer 6. In addition layer 2/3 receives input via horizontal collaterals of topographically distant upper layer neurons, from more widespread projections in lower layer 6, and from very widespread projections of cells at the layer 5/6 border. Cells in the depth of layer 5 also distribute collaterals within layers 5 and 6. Our findings provide anatomical evidence that the geniculo-cortical pathway in the mammalian visual system may use excitatory amino acid transmitters. In addition, the results support the notion that most long range connections that link distant points of the topographic map are excitatory.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00228997
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  • 2
    Electronic Resource
    Electronic Resource
    Computer simulation of laser backscattering from fiber surfaces (1990)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 28 (1990), S. 1755-1770 
    Details
    ISSN: 0887-6266
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The application of laser backscattering to fiber surface characterization was studied theoretically. Computer simulations were employed to investigate the theoretical influence of root-mean-square fiber surface roughness, fiber cross-sectional shape, fiber diameter, and surface asperity shape on scattering patterns. Results from this work indicate that laser backscattering may be useful for obtaining fiber structural information in a variety of applications.
    Additional Material: 15 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/polb.1990.090281008
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Experimental studies of fiber surface roughness characterization by laser backscattering (1990)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 28 (1990), S. 1771-1780 
    Details
    ISSN: 0887-6266
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The application of laser backscattering to the characterization of fiber surface roughness was studied experimentally using instruments based on optical Fourier transforms. Applications included comparing surface roughness of various fibers, measuring the effect of fiber delustering with TiO2 and detecting surface crystallization. The optical transform method was found to be a simple means of providing nonintrusive, real-time measurements of fiber surface structure.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/polb.1990.090281009
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  • 4
    Electronic Resource
    Electronic Resource
    Localization of methyl acrylate graft copolymerization in exposed cortex of abraided wool fibers (1986)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 31 (1986), S. 2839-2843 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1986.070310835
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    Paper (German National Licenses)
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