In the rank modulation scheme for flash memories, permutation codes have been studied. this paper, we study perfect in $$S_n$$ , set of all permutations on n elements, under Kendall $$\tau $$ -metric. We answer one open problem proposed by Buzaglo and Etzion. That is, proving nonexistence -metric, more values n. Specifically, present polynomial representation size a ball -metric some radius r, ...

Sympathetic influences on ventricular repolarization are not yet fully elucidated, despite their relevance to arrhythmogenesis. The sympathetic control of repolarization, measured from an endocardial monophasic action potential duration (APD) and from the QT interval, was investigated in 24 anesthetized cats. The effects of right and left stellectomy and of subsequent bilateral stellectomy or b...

OBJECTIVES We sought a noninvasive estimation of pulmonary capillary wedge pressure (Pw) by means of the information obtained from transmitral pulsed Doppler and color M-mode Doppler flow propagation velocity (FPV). BACKGROUND Pulsed Doppler parameters have limited accuracy for the estimation of Pw because they are determined by left atrial pressure and other parameters such as ventricular re...

Left ventricular (LV) relaxation is crucial for LV function, especially during exercise. We compared the effects of increasing doses of ivabradine, a selective inward hyperpolarization-activated current inhibitor, and atenolol on the rate and extent of LV relaxation (best fit method: time constant tau(BF), pressure asymptote P(BF)) at rest and during exercise. Eight dogs were chronically instru...

Myocardial tissue Doppler echocardiography (TDE) has been proposed as a tool for the assessment of diastolic function. Controversy exists regarding whether TDE measurements are influenced by preload. In this study, left ventricular volume and high-fidelity pressures were obtained in eight closed-chest dogs during intermittent caval occlusion. The time constant of isovolumic ventricular relaxati...

Pattern of right ventricular pressure (RVP) fall and its afterload dependence were examined by analyzing ventricular pressure curves and corresponding pressure dP/dt phase planes obtained in both ventricles in the rat heart in situ. Time and value of dP/dt(min), and the time constant tau were measured at baseline and during variable RV afterload elevations, induced by beat-to-beat pulmonary tru...

AIMS To elucidate the usefulness of the early diastolic mitral flow propagation velocity (V(p)) obtained from colour M-mode Doppler for non-invasively assessing left-ventricular (LV) relaxation during atrial fibrillation (AF). METHODS AND RESULTS Ten healthy adult dogs were studied to correlate V(p) with the invasive minimum value of the first derivative of LV pressure decay (dP/dt(min)) and ...

BACKGROUND Primary progressive aphasia (PPA) is a degenerative disease that presents as progressive decline of language ability with preservation of other cognitive functions in the early stages. Three subtypes of PPA are known: progressive nonfluent aphasia, semantic dementia, and logopenic aphasia (LPA). PATIENTS AND METHODS We report the case of a 77-year-old patient with PPA whose clinica...

Abstract This article deals with existence of solutions to the following fractional p p -Laplacian system equations: xmlns:m="http://www.w3.org/1998/Math/MathML" display="block"> ( −</m:m...

We prove the continuity of bounded solutions for a wide class parabolic equations with (p, q)-growth $$\begin{aligned} u_{t}-\mathrm{div}\left( g(x,t,|\nabla u|) \,\frac{\nabla u}{|\nabla u|}\right) =0, \end{aligned}$$ under generalized non-logarithmic Zhikov’s condition $$\begin{aligned}g(x,t,\mathrm{v}/r)&\leqslant c(K)\,g(y,\tau ,\mathrm{v}/r), \quad (x,t), (y,\tau )\in Q_{r,r}(x_{0},t_{0}),...