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  • 23.20.−g  (2)
  • scanning electron microscope  (2)
  • scanning electron microscope (SEM)  (2)
  • subarachnoid haemorrhage (SAH)  (2)
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Materialart
Erscheinungszeitraum
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  • 1
    Digitale Medien
    Digitale Medien
    Nuclear structure of the yrast 6+, 10+ and 14− states in106Sn (1994)
    Springer
    The European physical journal 349 (1994), S. 133-142 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 23.20.−g ; 27.60.+j ; 21.60.Cs
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The nuclear precession of106Sn in the 6+ state was measured relative to that of108Sn by the IPAD method: θ(6+;106Sn)/θ(6+;108Sn)=1.06(33). Available data on the 6+ state in108Sn giveg (6+;106Sn)=− 0.14(9), which is consistent with the seniority ν=2 configuration: ({ie133-01}). B(E2; 10+→ 8+) was measured to be 6.4(10) W.u. for106Sn and 0.62(5) W.u. for108Sn. This difference could not be explained by the ν≦4 configurations. The {ie133-02}→13− transition turned out to be an M1/ E2 mixed transition and so the yrast I=14 state was identified with a state of the νh11/2 band.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01291171
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  • 2
    Digitale Medien
    Digitale Medien
    Changes in the subarachnoid space after experimental subarachnoid haemorrhage in the dog: Scanning electron microscopic observation (1977)
    Springer
    Acta neurochirurgica 39 (1977), S. 1-14 
    Details
    ISSN: 0942-0940
    Schlagwort(e): Subarachnoid hemorrhage ; hydrocephalus ; subarachnoid fibrosis ; scanning electron microscope
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary The possible changes in the subarachnoid space after subarachnoid haemorrhage were studied in animals by using a scanning electron microscope (SEM). About 1 ml/kg of autogenous blood was injected intracisternally in 36 adult mongrel dogs to investigate changes in the subarachnoid space, over periods ranging from immediately after the injection to as long as 6 months. We have come to the conclusion that the injected blood disappears in about one to two weeks; the fibrosis or thickening of the arachnoid membrane appears in one to three weeks, and then returns to normal in a month in instances of rapid recovery, but there are some cases in which fibrosis persists for a long period and becomes chronic. The fact that an increase of fibrous tissue was found in the parietal region, where the injected blood had hardly reached, appears to indicate that the fibrosis is not always limited to the site of the haemorrhage but can occur in remote regions. We also discuss the usefulness of the SEM in the observation of the subarachnoid space, and the finding that vascular specimen preparations can be made by perfusing the brain with 2–10% phosphate-buffered formaldehyde solution.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01405236
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  • 3
    Digitale Medien
    Digitale Medien
    Post-haemorrhagic subarachnoid fibrosis in dogs. Scanning electron microscopic observation and dye perfusion study (1979)
    Springer
    Acta neurochirurgica 46 (1979), S. 105-117 
    Details
    ISSN: 0942-0940
    Schlagwort(e): Subarachnoid haemorrhage ; subarachnoid fibrosis ; scanning electron microscope ; cerebrospinal fluid pathway
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Scanning electron microscopic observations of the subarachnoid space were made in dogs focussing upon the fibre components in both the normal subarachnoid space and in areas of post-haemorrhagic fibrosis. It was concluded that the fibrous tissue originates from the arachnoid membrane itself, while organized haematoma is considered to form a component of the fibrosis. Perfusion of the subarachnoid space of dogs with a solution of 0.1% Toluidine Blue was also done. This showed that cerebrospinal fluid (CSF) is carried from the subarachnoid space directly to the dural sinuses through a fine string-like structure, which is conceivably one of the collateral CSF absorptive pathways.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01407685
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  • 4
    Digitale Medien
    Digitale Medien
    Scanning electron microscopy of the subarachnoid macrophages after subarachnoid haemorrhage, and their possible role in the formation of subarachnoid fibrosis (1979)
    Springer
    Acta neurochirurgica 50 (1979), S. 273-280 
    Details
    ISSN: 0942-0940
    Schlagwort(e): Macrophage ; subarachnoid haemorrhage (SAH) ; subarachnoid fibrosis ; scanning electron microscope (SEM)
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Sixty dogs with experimental subarachnoid haemorrhage (SAH), repeated SAH, and subarachnoid fibrosis (examined three weeks and three months after SAH, and treated with urokinase or dexamethasone) were examined by scanning electron microscope (SEM). The authors observed the resting and activated macrophages, the erythrophagocytosis, and giant cells in the subarachnoid space after SAH. They consider that the macrophages play an important role in the formation of subarachnoid fibrosis, similar to the role of macrophages in fibrosis in other sites.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01808524
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  • 5
    Digitale Medien
    Digitale Medien
    Effect of antifibrinolytic therapy on subarachnoid fibrosis in dogs after experimental subarachnoid haemorrhage (1980)
    Springer
    Acta neurochirurgica 54 (1980), S. 17-24 
    Details
    ISSN: 0942-0940
    Schlagwort(e): Subarachnoid fibrosis ; subarachnoid haemorrhage (SAH) ; tranexamic acid ; antifibrinolytic therapy ; scanning electron microscopy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary The effect of antifibrinolytic therapy on posthaemorrhagic subarachnoid fibrosis was observed experimentally in dogs with the scanning electron microscope (SEM). The subchronic subjects, given intravenous injections of tranexamic acid (1 mg/day) for 12 days and sacrificed 3 weeks after cisternal blood injection, showed residual clot with thick fibrosis, especially around the haemorrhage. The chronic subjects, to which the same procedure was applied and which were sacrificed three months after cisternal blood injection, showed significant increases in the subarachnoid fibrosis, most remarkably in the parasagittal region. Tranexamic acid is widely used for preventing the recurrence of subarachnoid haemorrhage. However, it was revealed in this study that antifibrinolytic therapy might increase chronic posthaemorrhagic subarachnoid fibrosis, which is considered to be responsible for communicating hydrocephalus by disturbing epicortical CSF flow4.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01401939
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  • 6
    Digitale Medien
    Digitale Medien
    Arachnoid villi affected by subarachnoid pressure and haemorrhage (1979)
    Springer
    Acta neurochirurgica 51 (1979), S. 63-72 
    Details
    ISSN: 0942-0940
    Schlagwort(e): Arachnoid villi ; subarachnoid hemorrhage (SAH) ; increased subarachnoid pressure ; scanning electron microscope (SEM)
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary The arachnoid villi of 18 dogs were studied. The authors confirmed the pressure gradient changes of the morphology of arachnoid villi of dogs with the scanning electron microscope (SEM). A subarachnoid infusion with 5–10 times higher pressure gradient than the physiological one, tore the superficial endothelial layer from the villi, and the inner part could also be observed stereoscopically. On the surface of the arachnoid villi the authors observed microvilli, openings of vacuoles and intercellular gaps, but did not find openings of preformed channels. After subarachnoid haemorrhage (SAH) generally the villi were blocked but the authors have observed a red blood cell escaping from a villus intercellularly.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01401795
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  • 7
    Digitale Medien
    Digitale Medien
    In-beam study of105In and103In (1992)
    Springer
    The European physical journal 343 (1992), S. 261-266 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 23.20.−g ; 27.60.+j ; 21.60.−n
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract High spin states in the isotopes105,103In have been studied by in-beamγ-ray techniques. The reaction51V(58Ni, 2p 2n) populated those states in105In. A measurement of the linear polarizations ofγ-rays has revealed a negative-parity band in105In. The reaction48Ti(58Ni,p 2n) produced the isotope103In, which has showed an yrast spectrum similar to that observed in105In. The lifetimes of the 19/2+ and 17/2+ states in107,105In have been measured by the recoil distance method;T 1/2(19/2+)=27±4 ps andT 1/2(17/2+)=1.1 −0.3 +0.6 ns for107In,T 1/2(19/2+)=4±2 ps andT 1/2(17/2+)=0.33±0.10 ns for105In.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01291524
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