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  • 1
    Electronic Resource
    Electronic Resource
    The effect of holmium laser radiation on stress, temperature and structure of cartilage (1998)
    Springer
    Lasers in medical science 13 (1998), S. 73-77 
    Details
    ISSN: 1435-604X
    Keywords: Cartilage ; Chondrocyte ; Laser ; Stress relaxation ; Structure alterations ; Thermal and mechanical effects
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Physics , Technology
    Notes: Abstract It is difficult to permanently alter the shape of cartilage in a controlled way. In otolaryngology and plastic surgery several procedures are done to alter the shape of cartilage, for example the correction of a deviated nasal septum and surgery for bat ears. The aim of this paper is to study the main parameters which are necessary for the phenomenon of reshaping of cartilage under non-destructive laser radiation. We have measured temperature and stress in cartilage when it is being reshaped with a holmium laser, It has been shown that laser-induced stress relaxation in cartilage takes place when the tissue temperature exceeds 70°C. We have determined the conditions which allow the shape of cartilage to be altered without producing any pronounced alteration to matrix structure or chondrocytes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00592962
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Studies on the relationship of Dioscorea cayenensis and Dioscorea rotundata cultivars (1986)
    Springer
    Euphytica 35 (1986), S. 733-739 
    Details
    ISSN: 1573-5060
    Keywords: Dioscorea cayenensis ; yellow yam ; Dioscorea rotundata ; white yam ; single linkage ; cluster analysis principal components analysis ; taxonomy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Two numerical taxonomic techniques, single linkage cluster analysis (SLCA) and principal components analysis (PCA) were used to study the relationship between Dioscorea cayenensis and D. rotundata cultivars. The study was prompted by the confusion in the taxonomy of the two taxa. Twenty-two cultivars (14 of D. rotundata and 8 of D. cayenensis) were collected and planted under the same environmental conditions for 3 successive years. Altogether, 76 characters, which include morphological, anatomical and ecological characters were observed and coded for analyses. Results from both methods agreed and showed that two groups of taxa exist. The discrimination between groups and description of differences between groups were more strongly marked from the PCA than in the SLCA.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00028581
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    Paper (German National Licenses)
    Fulltext
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