The prognosis of giant aneurysms remains poor despite recent advances in microneurosurgery. Thick-walled and partially calcified giant aneurysms with an atheromatic base are difficult to clip safely. Special techniques allowing reshaping of the base and ensuring the stability of clips are often needed. We present our experience with direct clipping of thick-walled giant aneurysms with the aid of the DeBakey cardiovascular clamp (Aesculap, Tuttlingen, Germany).
We obtain and analyze an exact solution to Einstein-Maxwell-scalar theory in
$(2+1)$ dimensions, in which the scalar field couples to gravity in a
Non-minimal way, and it also couples to itself with the self-interacting
Potential solely determined by the metric ansatz. A negative cosmological
We demonstrate that spin-flips can be observed in the two-photon and the
Three-photon Kapitza-Dirac effect for certain parameters. During the
Interaction with the laser field the electron's spin is rotated and we give
Explicit expressions for the rotation axis and the rotation angle. The
We study the uniqueness of higher-spin algebras which are at the core of
Higher-spin theories in AdS and of CFTs with exact higher-spin symmetry, i.e.
Conserved tensors of rank greater than two. The Jacobi identity for the gauge
Algebra is the simplest consistency test that appears at the quartic or...
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