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  • 1975-1979  (5)
  • 1
    Electronic Resource
    Electronic Resource
    The definition of “Cheyne-Stokes rhythms” (1978)
    Springer
    Acta neurochirurgica 43 (1978), S. 61-76 
    Details
    ISSN: 0942-0940
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The review of the literature on Cheyne-Stokes respiratory periods reveals enormous variation of the opinions expressed. The original description concerned periodicity characterized by rhythmic changes of respiratory phases and respiratory pauses in a relation of 60 ∶ 15 seconds. In the respiratory phase there were 30 respirations of increasing depths and frequency at the beginning of the phase and decreasing depths and frequency at the end of the phase. Literature data about Cheyne-Stokes respiration comprise a multiplicity of all rhythmic forms. The duration of respiratory cycles varies between 12 and 130 seconds. The relation of the respiratory phase and respiratory pause between 6 ∶ 4 or 75 ∶ 70 seconds, and the number of breaths between 3 and 30 during one respiratory phase. Cheyne-Stokes periods were observed in healthy subjects as well as in patients with neurological, neurosurgical, cardiac, pulmonary and paediatric diseases. Cheyne-Stokes periods were explained as sequel of prolongation of circulation time between pulmonary alveoli and respiratory centre, through increased sensitivity of the respiratory centre to CO2, diminished sensitivity of the respiratory centre to CO2 and O2-deficit, local blood flow disturbances, section of pathways in the brain stem with disinhibition of basic rhythms, brain immaturity, alterations of consciousness, and respiratory obstructions. Rhythmic changes of the heart beat, of excitability of the heart muscle, of blood pressure, of EEG and of neurological and mental signs were observed. In spite of numerous observations detailed analysis of the respiratory cycle was performed in only a few cases. Major studies are lacking.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01809226
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Duration of the respiratory periods of uniform respiratory rhythms in 35 patients with neurosurgical diseases (1978)
    Springer
    Acta neurochirurgica 43 (1978), S. 77-91 
    Details
    ISSN: 0942-0940
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Analysis of uniform respiratory rhythms in 35 neurosurgical patients showed that the mean duration of respiratory periods was between 8.60 and 71.51 seconds. The scatter around the mean value increases with the increase of the duration of the respiratory period. For an individual patient there is a one-peak distribution of the duration of respiratory periods. The duration of respiratory periods increases with age. There is a group of patients in whom the respiratory periods last over 40 seconds. This group is difficult to classify. There are no correlations between the acid-base values, blood gas values, and the duration of respiratory periods. Analysis of 10 autopsy cases showed lesions in the brain stem without any particular prevalence.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01809227
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Variability of the respiratory phase, respiratory pause, and numbers and durations of respirations during periodic breathing (1978)
    Springer
    Acta neurochirurgica 43 (1978), S. 263-274 
    Details
    ISSN: 0942-0940
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The analysis of cycles of periodic breathing (Cheyne-Stokes rhythms) in 35 patients showed wide variability of mean values of respiratory phases. The respiratory pauses are usually shorter and the scatter of the mean values is smaller. Only in four cases were respiratory pauses longer than respiratory phases. The duration of the respiratory phase becomes extended through the increase of number of single respirations. The latter also shows a very small scatter. The respiratory rate in 32 out of 35 patients was higher than normal and is to be considered as tachypnoea.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01587961
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    On the high energy proton spectrum measurements (1977)
    Springer
    Astrophysics and space science 52 (1977), S. 415-427 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Résumé L'accroissement avec l'énergie de l'albedo dû au calorimètre peut expliquer l'augmentation de la pente du spectre primaire de protons au-delà de 1000 GeV et la croissance des sections efficaces inélastiques entre 20 et 600 GeV observés lors des expériences en satellite PROTON 1, 2 et 3.
    Notes: Abstract The steepening of the proton spectrum beyond 1000 GeV and the rise in inelastic cross sections between 20 and 600 GeV observed by the PROTON 1-2-3 satellite experiments may be explained by systematic effects of energy dependent albedo (back-scatter) from the calorimeter.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01093876
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    New coating materials prepared by radiation-induced polymerization. I. Mar-resistant coating composition and properties (1978)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 22 (1978), S. 487-496 
    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
    Notes: A mar-resistant coating system was obtained by screening combinations of silicone and vinyl compounds. It was found that binary systems, such as the γ-glycidoxypropyltrimethoxysilane-glycidyl methacrylate system, were excellent not only in mar resistance but also in adhesion to base resin polymers. Haze values of these coatings, after the sand-falling test, reached less than 10%. The coating process consisted of three steps: the preparation of prepolymer, the coating to plastic surface, and the curing of the coating by heating. It was found that the prepolymerization step could be performed by irradiation very conveniently; the control of viscosity for coating application and thickness control could be possible without any gel formation. These coatings were also good in weather resistance due perhaps to the good adhesion to base resin and could be applicable to plastic spectacles, glazing materials, and a variety of other products.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1978.070220216
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    Paper (German National Licenses)
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