OBJECTIVE The aim of this study was to evaluate the microanatomy and histological features of the central myelin in the root exit zone of facial nerve. METHODS Forty facial nerves with brain stem were obtained from 20 formalin fixed cadavers. Among them 17 facial nerves were ruined during preparation and 23 root entry zone (REZ) of facial nerves could be examined. The length of medial REZ, fr...

We establish the inverse Lebedev expansion with respect to parameters and arguments of the modified Bessel functions for an arbitrary function from Hardy’s space H2,A, A> 0. This gives another version of the Fourier-integral-type theorem for the Lebedev transform. The result is generalized for a weighted Hardy space Ĥ2,A ≡ Ĥ2((−A,A);|Γ(1+Rez+iτ)|2dτ), 0 < A < 1, of analytic functions f(z),z = R...

The effect of eccentricity on absolute instabilities (AI) in the Taylor–Couette system with pressure-driven axial flow and fixed outer cylinder is investigated. Five modes of instability are considered, characterized by a pseudo-angular order m, with here |m| 6 2. These modes correspond to toroidal (m = 0) and helical structures (m 6= 0) deformed by the eccentricity. Throughout the parameter ra...

AF-Colenco Ltd, Täfernstrasse 26, CH-5405 Baden, Switzerland Nuclear Research Institute Rez plc, Rez-Husinec cp.130, 25068 Rez, Czech Republic Forschungszentrum Karlsruhe GmbH, Postfach 3640, 76021 Karlsruhe, Germany Wilhelm Gottfried Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover, Germany Empresa Nacional de Residuos Radiactivos s.a., Emilio Vargas 7, 28043 Madrid, Spain Nuclear ...

The combined effects of axial flow and eccentricity on the temporal stability properties of the Taylor–Couette system are investigated using a pseudospectral method. Eccentricity is found to stabilize the Couette flow regardless of axial advection intensity. As the axial Reynolds number Rez is increased for any fixed eccentricity e 6 0.7, the critical mode switches from deformed toroidal Taylor...

Let S be a harmonic extension of an H-type group and call its modular function. We nd suucient conditions on the spherical transform of a radial distribution k on S, so that ?z k is a left resp. a right] convolutor of L p (S), 1 < p < 1, for every complex z with 0 Rez 1 resp. ?1 + 1=p Rez 1=p].

Let S be a harmonic extension of an H -type group and call δ its modular function. We find sufficient conditions on the spherical transform of a radial distribution k on S , so that δ−zk is a left [resp. a right] convolutor of L(S) , 1 < p < ∞ , for every complex z with 0 ≤ Rez ≤ 1 [resp. −1 + 1/p ≤ Rez ≤ 1/p ].