magnetotelluric (mt) method is an important passive surface geophysical method which uses the earth’s natural electromagnetic fields to investigate the electrical resistivity structure of the subsurface. the depth of investigation of mt is much higher than that of other electromagnetic (em) methods (vozoff, 1991). for a general conductivity distribution in the earth, the horizontal electric fie...

INTRODUCTION We describe indications and surgical technique for dividing the stapedius and tensor tympani tendons during middle ear surgery. Middle ear muscle reflexes involve contraction of the tensor tympani muscle (TTM) and stapedius muscle (SM) to increase impedance of the middle ear, and may shield the inner ear from loud, continuous nonimpact noise. Sectioning SM and TTM tendons has been ...

[2] The impedance boundary condition [Senior and Volakis, 1995] is a convenient tool for simulating the material properties of a surface. For most materials the surface impedance is a scalar, but there are materials whose properties are anisotropic for which a tensor impedance is required. The simplest cases are those for which the tensors are diagonal but recent work with metamaterials has mad...

Abstract Two methods for extraction of the effective tensor surface impedance representing metasurfaces with printed elements and arbitrary geometry are presented. The can be modelled as a shunt admittance on transmission line. extracted combined line theory enables to compute easily efficiently coefficient through multilayer metasurface structure. modelling conduct multi‐parameter study reflec...

The Mohr circle, most commonly met in the analysis of mechanical stress, is used to depict magnetotelluric impedance information, taking the real and quadrature parts of magnetotelluric tensors separately. The magnetotelluric concepts of two-dimensionality, three-dimensionality, skew and anisotropy are then all given quantitative expression on a diagram, as are various magnetotelluric invariant...