This paper reports on studies of the edge transport barrier and transition threshold of the High Confinement (H) mode of operation on the Alcator C-Mod tokamak [I. H. Hutchinson et al, Phys. Plasmas 1, 1511 (1994)], over a wide range of toroidal field (2.6-7.86 T) and plasma current (0.4-1.7 MA). The H-mode power threshold and edge temperature at the transition increase with field. Barrier widt...

A vacuum photodiode is constructed in the form of a parallel plate capacitor with plate separation d. A battery maintains constant potential V between the plates. A short laser pulse illuminates that cathode at time t = 0 with energy sufficient to liberate all of the surface charge density. This charge moves across the capacitor gap as a sheet until it is collected at the anode at time T . Then...

To separate the effects of coronary flow, perfusion pressure, and oxygen delivery on left ventricular diastolic compliance and diastolic wall thickness, isolated buffer and blood-perfused rabbit hearts with left ventricular volume controlled by a fluid-filled intraventricular balloon were subjected to the following interventions: complete global ischemia, hypoxia at constant coronary flow, hypo...

BACKGROUND Victims of severe accidental hypothermia are prone to fluid extravasation but rarely develop lung edema. We hypothesize that combined hypothermia-induced increase in pulmonary vascular resistance (PVR) and a concomitant fall in cardiac output protect the lungs against edema development. Our aim was to explore in hypothermic-isolated blood-perfused rat lungs whether perfusion at const...

Static Single Assignment (SSA) form has shown its usefulness for powerful code optimization techniques such as constant propagation in sequential programs. We introduce the Concurrent Static Single Assignment (CSSA) form and the transformation algorithm for explicitly parallel programs with interleaving semantics and post-wait synchronization. The parallel construct considered in this paper is ...

In the present work we explore an approximate solution of the Navier-Stokes equations for optical fiber coating in a pressure type die by withdrawal from a bath of two immiscible Oldroyd 8-conatant fluid under constant pressure gradient in the axial direction using two-layer coating flow. The constitutive equation of motion has been solved by using optimal homotopy asymptotic method (OHAM) for ...

BACKGROUND One century after the introduction of the oxygen flow meter into clinical practice, we have developed a device, FreeO(2), that automatically titrates the oxygen flow delivered to spontaneously breathing patients, with the aim of maintaining a stable S(pO(2)). We evaluated this system in healthy subjects during induced hypoxemia. METHODS Hypoxemia was induced in 10 healthy subjects...

Circulation over coastal submarine canyons driven by constant upwelling or downwelling wind stress is simulated and analyzed with a primitive equation ocean model. Astoria Canyon, on the west coast of North America, is the focus of this study, and model results are consistent with most major features of mean canyon circulation observed in Astoria Canyon. Near-surface flow crosses over the canyo...

Neuromorphic architectures to robust and adaptive navigation based on visual clues have been proposed as automated landing systems. In particular, constant-optic-flow descents have been studied in relation to their bioinspired nature and to their promise for a substantial hardware and software simplification. The main body of work on the topic considers Earth-based systems as applications, such...