BACKGROUND Abnormalities of cardiac structure and function are common in a wide range of populations including those with and without established clinical cardiovascular disease (CVD). This study reports the prevalence of left ventricular hypertrophy (LVH), the four patterns of LV geometry and establishes clinical characteristics and five-year outcomes of each group in people of advanced age. ...

Changes of annulus luminance in traditional disk-and-annulus patterns can be perceived to be either reflectance or illuminance changes. In the present experiments, we examined the effect of varying annulus reflectance. In Experiment 1, we placed test and standard patch-and-surround patterns in identical Mondrian patchworks. Only the luminance of the test surround changed from trial to trial, ap...

The Nusselt number, overall heat transfer, and convective transfer coefficients of glycerol-water-based Cu nanofluids flowing in a parallel flow double pipe exchanger are estimated using CFD analysis. Single-phase fluid approach technique is used the Ansys 19.0 workbench was to create model. Heat tests with at three rates (680<Re<1900) carried out laminar developing zone. For testing, 500...

INTRODUCTION Left ventricular geometry is associated with cardiovascular events and prognosis. The Tei index of myocardial performance is a combined index of systolic and diastolic dysfunction and has been shown to be a predictor of cardiovascular outcome in heart diseases. The relationship between the Tei index and left ventricular geometry has not been well studied. This study examined the as...

The paper is concerned with the bifurcation of limit cycles in general quadratic perturbations of a quadratic reversible and non-Hamiltonian system, whose period annulus is bounded by an elliptic separatrix related to a singularity at infinity in the poincar'{e} disk. Attention goes to the number of limit cycles produced by the period annulus under perturbations. By using the appropriate Picard...

Carbon nanomaterials are of great interest for next generation nanofluids. nanotubes and graphene are, in particular, highly thermally conductive their use as thermal fluid is gaining momentum among the research community. This work investigates performance nanoplatelet (GnP)-nanofluid multi-walled carbon nanotube (MWCNT)-nanofluid by using a concentric pipe heat exchanger. The prepared nanoflu...