The electrochemical activity of the heart gives rise to an electric field. In electrocardiography, cardiac electrical activity is assessed by analyzing the potential distribution of this field on the body surface. The potential distribution, or the set of measured surface-voltage signals, is called the electrocardiogram (ECG). Spatial properties of the ECG can be captured with body surface pote...

Prosperetti’s seminal Physalis method, an Immersed Boundary/spectral method, had been used extensively to investigate fluid flows with suspended solid particles. Its underlying idea of creating a cage and using a spectral general analytical solution around a discontinuity in a surrounding field as a computational mechanism to enable the accommodation of physical and geometric discontinuities is...

Due to the low transmission capacity margin of overhead conductors ACSR type in existing grid structure, large-scale connection new energy is greatly limited. However, 60% IACS heat-resistant have conductivity and high power loss process. Therefore, 61. 5% aluminum alloy with are developed for line expansion reconstruction. The feasibility stranded conductor analyzed combination example urban t...

Electric energy passes through many stages from production to usage, and electrical connections take place at these stages. Electrical are quite important for system safety quality. In this study, current-temperature relationship in the cable was investigated joints made with screw connection terminals, depending on torque applied screw. numerical solution of problem, Comsol Multiphysics progra...

Conductor is a numerical invariant of a variety over a local field measuring the wild ramification of the inertia action on the l-adic etale cohomology. In [3], S.Bloch proposes a conjectural formula, Conjecture 1.9, which we call the conductor formula of Bloch. To formulate it, he defines another numerical invariant as the degree of the self-intersection class, which is defined using the local...

Water saturation and cation exchange capacity are the most significant parameters used to calculate a hydrocarbon zone potential. In clean formations, by applying the famous Archie model, which assumes that in the formation the only electric conductor is the formation water, the water saturation can be calculated. Additionally, in shaly sand formations this assumption may not be true as the ion...

The rigid catenary system is widely used in tunnels to power electric trains via contact with a pantograph. Due gravity, the wire normally has sag that may affect dynamic interaction performance To reduce sag, most efficient measure improve moment of inertia conductor rail, which clamp wire. Six new types rail large moments are developed based on conventional rail. Then both static and analyses...

The Mott metal-insulator transition, a paradigm of strong electron-electron correlations, has been considered as a source of intriguing phenomena. Despite its importance for a wide range of materials, fundamental aspects of the transition, such as its universal properties, are still under debate. We report detailed measurements of relative length changes ΔL/L as a function of continuously contr...

Spin Hall effect at finite wave vector in a ferromagnetic conductor is theoretically studied by calculating the spin density as linear response to an applied electric field. The cases of spin–orbit interaction due random impurities and localized Rashba are considered. It shown that has broad for \(q \lesssim 2k_{\text{F}}\) where kF Fermi vector. This fact confirms local nature spin-charge conv...