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  • 1985-1989  (2)
  • 1970-1974
  • 1945-1949
  • Cylindrical diffuser  (1)
  • Left ventricle  (1)
  • 1
    Electronic Resource
    Electronic Resource
    What stops the flow of blood from the heart? (1988)
    Springer
    Heart and vessels 4 (1988), S. 241-245 
    Details
    ISSN: 1615-2573
    Keywords: Aorta ; Waves ; Flow deceleration ; Energy flux ; Left ventricle
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The determinants of aortic pressure and flow are generally studied using impedance methods, the results of which indicate that reflected waves are important, particularly during aortic flow deceleration. An alternative analysis of measured aortic pressure and velocity, using the method of characteristics to calculate the energy flux per unit area of the waves, suggests a different conclusion. We suggest that aortic deceleration is caused by a discrete expansion wave propagating from the left ventricle, and that energy thus recovered by the ventricle may be coupled to early filling of the ventricle.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02058593
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    A method for the construction of disposable cylindrical diffusing fibre optic tips for use in photodynamic therapy (1989)
    Springer
    Lasers in medical science 4 (1989), S. 229-235 
    Details
    ISSN: 1435-604X
    Keywords: Photodynamic therapy ; Cylindrical diffuser ; Interstitial treatment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Physics , Technology
    Notes: Abstract A simple method for the manufacture of disposable, cylindrical, diffusing fibre tips is described. The method is suitable for plastic clad silica fibres with core diameters in the range 200–600μm. Light diffusing tips up to 40 mm in length have been constructed. The method is highly reproducible, construction is typically less than five minutes and the financial cost is negligible. The diffusers are highly efficient, delivering an amount of light at least equal to that transmitted by a plane cut fibre of the same core diameter. The uniformity of light emission along the diffuser can be modified to meet the requirements of any given treatment. The diffusers have been successfully used in interstitial photodynamic therapy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02032452
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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