BACKGROUND Gaps of sufficient cross-sectional dimensions within linear radiofrequency (RF) lesions may allow conduction through the lesion. The purpose of this study was to examine the effects of different gap geometries on conduction through discontinuous RF lesions. METHODS AND RESULTS Radiofrequency lesions were created in isolated, perfused rabbit right ventricular (RV) free wall preparat...

We report the determination of the energy-band offsets between GaN and AlN using the linewidth full width at half maximum of an extremely sharp excitonic luminescence transition in AlxGa1−xN alloy with x=0.18 at 10 K. Our sample was grown on C-plane sapphire substrate by metal-organic chemical-vapor deposition at 1050 °C. The observed value of the excitonic linewidth of 17 meV is the smallest e...

Phase-synchronization is a manifestation of interaction between neuronal groups measurable from LFP, EEG or MEG signals, however, volume conduction can cause the coherence and the phase locking value to spuriously increase. It has been shown that the imaginary component of the coherency (ImC) cannot be spuriously increased by volume-conduction of independent sources. Recently, it was proposed t...

BACKGROUND This study describes the use of adenosine during ablation procedures to allow conduction through adenosine-dependent accessory pathways (APs), which are inactive at the time of the procedure. The technique allows for successful mapping and ablation of these pathways. METHODS Retrospective review of all patients undergoing AP ablation from 1998 to 2008 to identify patients with abse...

endoscopic radial artery harvesting (erah) is a feasible and attractive minimally invasive approach for conduit procurement, however there have been concerns about a potential neurological damage occurring at the harvest limb site secondary to injury of the radial nerve during endoscopic harvesting. we present a case of erah in which we evaluated intraoperatively the characteristics of radial n...

in the present study, we investigate dc conduction mechanism of electron beam evaporated   bromoaluminium phthalocyanine (bralpc) thin films using aluminum and gold electrodes. the current-voltage characteristics of sandwich type device are evaluated for the temperature range 298-413k under dark conditions. it is observed that the current passing through the device is increased by increasing te...

background: incidence and predominant subtype  of guillain-barre syndrome (gbs) differs geographically. electrophysiology has an important  role in early diagnosis and  prediction  of prognosis. this study  is conducted to determine the frequent  subtype  of gbs in a large group of patients  in iran and compare  nerve conduction studies in axonal and demyelinating forms of gbs. methods:    we  ...

in the present paper, a numerical method is considered for solving one-dimensionalheat equation subject to both neumann and dirichlet initial boundaryconditions. this method is a combination of collocation method and radial basis functions (rbfs). the operational matrix of derivative for laguerre-gaussians (lg) radial basis functions is used to reduce the problem to a set of algebraic equations...

In this study, a spectral tau solution to the heat conduction equation is introduced. As basis functions, orthogonal polynomials, namely, shifted fifth-kind Chebyshev polynomials (5CPs), are used. The proposed method’s derivation based on solving integral that corresponds original problem. approach and some theoretical findings serve transform problem with its underlying conditions into suitabl...

It is commonly accepted that in typical situations the rate of entropy production non-negative. We show this assertion not entirely correct, even linear regime, if a time-dependent, external perturbation compensated by rapid enough decay response function. This demonstrated for three variants Drude model to describe electrical conduction noble metals, namely classical free electron gas, Drude-S...