cancellation is nearly complete in certain symmetric positions of the TMS coil relative to the MRI bore, such as configurations Fringe-V, B0-V, and B0-H in Fig. 2 as well as i and iv in Fig. 3 by Yau et al. On the other hand, configurations Fringe-H in Fig. 2 and ii, iii, and v in Fig. 3 have different coupling between each of the two windings of the TMS coil and the MRI scanner magnet. Therefo...

Nowadays, wireless sensor networks (WSN) are becoming essential in our daily life. However, a major constraint concerns the energy power supply. Indeed, batteries need to be recharged or replaced often which implies limited lifetime for WSN nodes. One alternative consists harvesting mechanical from surrounding vibrations of environment. Using finite element simulations, we report here complete ...

Large deformations of helical springs are affected by coil contact, but most available spring modelling techniques only account for nonlinear vertical motion, and Finite Elements (FE) analysis that considers contact between coils can be very expensive. A 2D model based on equivalent beam penalty-based algorithm is developed efficient yet realistic prediction non-uniform deflection. The proposed...

Dendron rod-coil molecules are a novel supramolecular building block, comprising a dendritic unit, a rodlike unit, and a coil unit (J. Am. Chem. Soc. 2001, 123, 4105). It was proposed that in solution these molecules assemble into ribbonlike aggregates of high aspect ratio. We report here on the self-assembly of DRC-molecules in 2-propanol and ethyl acetate as studied with static and dynamic li...

In recent years, magnetic resonance imaging (MRI) systems that operate up to under 3 T are being used in clinical practice in Japan. In order to achieve the requirements of higher image quality and shorter imaging times, devices that utilize high magnetic fields (> 3 T) and high power electromagnetic (EM) wave pulses have been developed. The rise of the static magnetic field is proportional to ...

A significant problem in the concurrent application of transcranial magnetic stimulation (TMS) and functional magnetic resonance imaging (fMRI) is the image artefact caused by the effect of the TMS-coil on the homogeneity of the static magnetic field (B0). The resulting field inhomogeneity can lead to spatial distortions and local signal loss in echo-planar (EP) images. Here we demonstrate that...

in thermal cracking plants, it is desired to apply an optimal temperature profile along the reactor to minimize the operation cost. in this article a simulator is developed by the use of a mathematical model, which describes the static operation of a naphtha thermal cracking pilot plant. the model is used to predict the steady state profiles of the gas temperature and product yields. using a dy...