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The 56 tonne high resolution liquid scintillation calorimeter KARMEN at the beam stop neutrino source ISIS has been used to search for neutrino oscillations in the disappearance channel νe→ νx . The νe emitted in µ + decay at rest are detected with spectroscopic quality via the exclusive charged current reaction 12 C ( νe , e − ) 12 Ng.s. almost free of background. Analysis of the spectral shape of e − from the νe-induced reaction as well as a measurement of the absolute νe flux allow to investigate oscillations of the type νe→ ντ and νe→ νµ. The flux independent ratio R CC/NC of charged current events 12 C ( νe , e − ) 12 Ng.s. to neutral current events 12 C ( ν , ν ′ ) 12 C * provides additional information in the oscillation channel νe→ νx. All three analysis methods show no evidence for oscillations. For the νe→ ντ channel 90% CL limits of sin 2 (2Θ) < 0.338 for ∆m 2 ≥ 100 eV 2 /c 4 and ∆m 2 < 0.77 eV 2 /c 4 for maximal mixing in a simple 2 flavor oscillation formalism are derived. A complete 3 flavor analysis of the experimental data from five years of measurement with respect to νe↔ ντ and νe↔ νµ mixing is presented.

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Patients with small effusions can be treated conservatively in selected cases. Based on our experience, we prefer a differentiated therapy. As first procedure, burr hole and subdural drainage were performed, leaving the cyst alone, seeming sufficient for the majority of cases. Craniotomy or endoscopical means should be reserved as treatment of choice for special cases, depending on category and acuteness of SDE and size/localisation of the ACMF.