Abstract Using the photometric and kinematical data from Gaia Data Release 2, three old open clusters namely Berkeley 32 (Be 32), 98 98), King 23 are investigated. The latter two of these poorly studied in literature. numbers most probable cluster members 563, 260, 114 for Be 32, 98, 23, respectively, with membership probabilities higher than 80% lying within clusters’ limiting radii. Mean prop...

Published studies show that ventricular pacing in canine hearts produces three distinct patterns of epicardial excitation: elliptical isochrones near an epicardial pacing site, with asymmetric bulges; areas with high propagation velocity, up to 2 or 3 m/s and numerous breakthrough sites; and lower velocity areas (<1 m/s), where excitation moves across the epicardial projection of the septum. Wi...

The linear time-varying elastance theory is frequently used to describe the change in ventricular stiffness during the cardiac cycle. The concept assumes that all isochrones (i.e., curves that connect pressure-volume data occurring at the same time) are linear and have a common volume intercept. Of specific interest is the steepest isochrone, the end-systolic pressure-volume relationship (ESPVR...

We used comprehensive electrophysiological/anatomical digital computer models of atrial excitation and the human torso to study the mechanisms of generation of body surface P-waves in normal sinus rhythm, and in middle and lower sinus rhythm. Simulated atrial surface isochrone maps for normal sinus rhythm support the validity of the atrial excitation model. The results suggest that the presence...

We introduce an alternative hypothesis to explain the very low luminosity of the cool (L-type) companion to the ∼25 MJup ∼8 Myr-old brown dwarf 2M1207A. Recently, Mohanty et al. (2007) found that effective temperature estimates for 2M1207B (1600± 100 K) are grossly inconsistent with its lying on the same isochrone as the primary, being a factor of ∼10 underluminous at all bands between I (0.8μm...

We present a high resolution (R ∼ 43 000) abundance analysis of a total of nine stars in three of the five globular clusters associated with the nearby Fornax dwarf spheroidal galaxy. These three clusters (1, 2 and 3) trace the oldest, most metal-poor stellar populations in Fornax. We determine abundances of O, Mg, Ca, Ti, Cr, Mn, Fe, Ni, Zn, Y, Ba, Nd and Eu in most of these stars, and for som...

In present clinical practice, information about the heart electrical activity is routinely gathered through ECG’s, which record electrical potential from just nine sites on the body surface. However, thanks to the latest technological advances, body surface potential maps are becoming available, as well as epicardial maps obtained noninvasively from body surface data through mathematical model-...

The young SMC cluster NGC 330 contains a number of blue stars that lie above the main-sequence turnoff found from our isochrone fitting and below the position of the blue supergiants. We used our own, new spectroscopy and published data on these stars to investigate their possible nature. Problems in interpreting the evolutionary status of the blue giants have been found in several preceding st...

The UBVI and time-series CCD photometric observations of the intermediate-age open cluster Mel 71 were carried out to search for variable stars and obtain their physical parameters. By fitting the ZAMS to the observed color-color and color-magnitude diagrams, we estimated a reddening value of the cluster E(B−V) = 0.20 ± 0.05 and a distance modulus (V−M V) • = 11.6 ± 0.2. We also found its age o...

Abstract Funding Acknowledgements Type of funding sources: None. Background In addition to variety force time indices, electrophysiologist use peak voltage (Vpp) and or S wave on unipolar electrogram assess RF lesions they deliver. This strategy ignores cardiac conduction speed, direction, curvature, all which are affected by delivered lesion. Electrode array catheters such as the Advisor HD Gr...