Hydrogen and deuterium Rydberg atoms, initially moving at velocities of 600 m/s and 560 m/s, respectively, in pulsed supersonic beams, have been decelerated and electrostatically trapped following adiabatic 90◦ deflection from their initial axis of propagation to minimise collisions with the trailing edge of the gas pulses. The time evolution of the potential energy surfaces, over which the ato...

The curvilinearity of the atrial pressure-volume curve implies that atrial compliance decreases progressively with increasing left atrial (LA) pressure (LAP). We predicted that reduced LA compliance leads to more rapid deceleration of systolic pulmonary venous (PV) flow. With this rationale, we investigated whether the deceleration time (t dec) of PV systolic flow velocity reflects mean LAP. In...

Stiffness- and relaxation-based diastolic function (DF) assessment can characterize the presence, severity, and mechanism of dysfunction. Although frequency-based characterization of arterial function is routine (input impedance, characteristic impedance, arterial wave reflection), DF assessment via frequency-based methods incorporating optimization/efficiency criteria is lacking. By definition...

Exact results stemming directly from Einstein equations imply that inhomogeneous Universes endowed with vanishing pressure density can only decelerate, unless the energy density of the Universe becomes negative. Recent proposals seem to argue that inhomogeneous (but isotropic) space-times, filled only with incoherent matter, may turn into accelerated Universes for sufficiently late times. To sc...

With the increasing development of laser accelerators, the electron energy is already beyond GeV and even higher in near future. Conventional beam dump based on ionization or radiation loss mechanism is cumbersome and costly, also has radiological hazards. We revisit the stopping power of high-energy charged particles in matter and discuss the associated problem of beam dump from the point of v...

CTG monitoring of the fetal heart rate and uterine contractions during pregnancy and delivery provide information on the physiological condition of the fetus needed to identify hypoxia. Interpretation, however, requires experience and important patterns might be missed or misinterpreted due to stress, exhaustion or distraction. Interpretation has also been reported subjective with poor reproduc...

[1] Measurements of streamer velocity reflect the detailed internal microphysics of sprite development that is connected to the effects streamers create in the mesosphere. We report intensified high speed video observations of streamer development acquired at 5,000 to 10,000 frames per second that include the entire altitude range of sprites ( 40–90 km). Downward streamers accelerate to a maxim...

Left ventricular (LV) filling deceleration time (DT) is determined by the sum of atrial and ventricular stiffnesses (KLA + KLV). If KLA, however, is close to zero, then DT would reflect KLV only. The purpose of this study was to quantify KLA during DT. In 15 patients, KLV was assessed, immediately after cardiopulmonary bypass, from E wave DT as derived from mitral tracings obtained by transesop...

Cladellas et al. concern patients who failed to achieve an adequate heart rate response; it is not clear whether heart rate decrease occurred in any patient. As we reported, only 1 of 14 patients with paradoxical sinus deceleration was taking beta-blockers. We mentioned in our report that all our patients fasted for at least 3 h before dobutamine stress echocardiography; mild hypovolemia may ha...