rock increases local field strength enough to alter map readings but not compass direction, should leave the birds reoriented or disoriented. Indeed, at smooth gradients they are reoriented, whereas at irregular ones they are ludicrously disoriented (Figure 3). Pigeons, like most animals with maps, possess enormous numbers of magnetite grains in the ethymoid sinus. There are species in which ma...

We present a surface abundance Doppler image of singly–ionized calcium for the Bp star UMa based on high signal-to-noise CCD spectra. This map shows striking similarities to that of oxygen (Rice et al. 1997) and perhaps iron (Rice & Wehlau 1990). The Ca II 866.2 nm line has allowed us to obtain a detailed surface abundance map of calcium for UMa. The calcium abundance map has been used to locat...

BACKGROUND Identifying characteristics associated with transcranial magnetic stimulation (TMS) benefit would offer insight as to why some individuals experience tinnitus relief following TMS treatment, whereas others do not. The purpose of this study was to use the Tinnitus Functional Index (TFI) and its subscales to identify specific factors associated with TMS treatment responsiveness. METH...

We show that the cubic compound PbBi2 is a topological semimetal hosting sixfold band touching point in close proximity to Fermi level. Using angle-resolved photoemission spectroscopy, we map structure of system, which good agreement with results from density functional theory. Further, by employing low energy effective Hamiltonian valid crossing point, study effect magnetic field on fermion. T...

A depth map registration method is proposed in this article, and experimental results are presented for long three-dimensional map sequences obtained from a moving observer. In vision based systems used in mobile robotics the perception of self-motion and the structure of the environment is essential. Inertial and earth field magnetic pose sensors can provide valuable data about camera ego-moti...

introduction: it is important that biological and health effects from the induction of currents and fields in the body by extremely low frequency (elf) fields are fully explored to determine the effects produced at the molecular, cellular and organ levels. the objective of this study was to evaluate the intensity of elf electromagnetic fields and its probable relationship with hematological cha...

Magnetic resonance imaging (MRI) is a widely used biomedical imaging modality that derives much of its contrast from microscale magnetic field gradients in biological tissues. However, the connection between these sub-voxel field patterns and MRI contrast has not been studied experimentally. Here, we describe a new method to map subcellular magnetic fields in mammalian cells and tissues using n...