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  • 1
    Electronic Resource
    Electronic Resource
    The histopathology of fiberglass dermatitis in relation to von Hebra's concept of eczema (1975)
    Oxford, UK : Blackwell Publishing Ltd
    Contact dermatitis 1 (1975), S. 0 
    Details
    ISSN: 1600-0536
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: A group of 36 normal control persons was patch-tested with glass fibers. The tested filaments had a length of about 3 to 5 mm and a length of 9 to 13 μM. The glass fibers were obtained from the normal production process. They were coated with cured epoxy resin. A group of 29 normal control persons was tested with the Mime type of fibers from which the epoxy finish had been burned off. Another group of 36 persons was patch-tested with ultrasmall glass globes with a diameter of 10 to 15 μM. Coated and uncoated glass globules were tested. On every person 5 patch tests with the same material were done. They were removed after 1, 5, 24, 48 and 72 h. On coated fiber, 12 of 36 tested people reacted with either a + or a ++ reaction. On the uncoated fibers a reaction could be noted in 10 out of 29 persons.The patch tests with coated as well as uncoated glass globules were all negative. A total of 60 biopsies was performed in those cases where + or ++ reactions were noted. The histological examination of the biopsies showed no differences between the reactions on coaled and uncoated fibers. The skin reactions to glass fiber showed, besides microtraumatic changes, several histological characteristics of an eczematous reaction, tike spongiosis and perivascular lymphocytic infiltration. The importance of these findings is discussed. It is emphasized that histological alterations are only one of the six points which must be taken into account when the diagnosis of eczema is considered.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0536.1975.tb05333.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The effect of postischemic hyperemia on intracranial pressure and the no-reflow phenomenon (1974)
    Springer
    Acta neuropathologica 29 (1974), S. 73-84 
    Details
    ISSN: 1432-0533
    Keywords: Postischemic Hyperemia ; Intracranial Hypertension ; Brain Edema ; No-Reflow ; Recirculation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A no-reflow phenomenon was observed in cats immediately after cerebral ischemia. When ischemia was followed by a normal recirculation of 1 hr duration, only minor perfusion defects and no intracranial hypertension was observed. If, however, ischemia was preceded by moderate hypoxia for several hours, extreme postischemic hyperemia was necessary to prevent the development of intracranial hypertension and a no-reflow phenomenon. Electron microscopic investigation revealed that capillary obstruction did not develop within the first hour after ischemia. Thus the no-reflow is not related to capillary lesions. The results support the view that the no-reflow phenomenon is produced by blood aggregates which obstruct vessels. This phenomenon is to some extent reversible. If, however, a slow-down of blood flow is induced by intracranial hypertension based on postischemic brain edema, the no-reflow is enhanced. There was no indication that arterial hypertension increases brain edema after ischemia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00684393
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Main-sequence broadening in the double clusterh and Ξ persei (1990)
    Springer
    Astrophysics and space science 169 (1990), S. 109-111 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Precise photometric observations of stars in the double cluster h and Ξ Persei reveal a large spread in the colours and magnitudes of the upper Main-Sequence; half of the stars are variables that are Be stars or related stars. The reported age difference between both clusters is found to be spurious. Rotation apparently affects both the intrinsic and the observed colours of the early-type stars in h and Ξ Persei. This result questions the validity of photometric calibrations that heavily rely on h and Ξ Persei or similar clusters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00640694
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    Paper (German National Licenses)
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