نتایج جستجو برای: critical flow

تعداد نتایج: 940975  

Journal: :the journal of tehran university heart center 0
arash gholoobi atherosclerosis prevention research center, imam reza hospital, mashhad university of medical sciences, mashhad, iran. mohammad vojdanparast cardiovascular research center, mashhad university of medical sciences, mashhad, iran.

large intercoronary communications in the absence of obstructive coronary artery disease constitute a very rare coronary artery anomaly in which there is a readily visible connection between the 2 coronary arteries with a unidirectional or bidirectional blood flow; consequently, this anomaly may be misinterpreted as a functioning collateral vessel, indicative of an unrecognized proximal coronar...

2006
Kshitiz Malik Kevin M. Woley Samuel S. Stone Mayank Agarwal Vikram Dhar Matthew I. Frank

Speculatively multithreaded processors find parallelism by speculatively fetching and renaming dynamic flows of instructions from (perhaps) widely seperated parts of the program flow graph. These processors must handle inter-thread register dependences. The approach followed in this paper is to dynamically identify the consumers of interflow register mappings that will be (but have not yet been...

2007
Subhajit Roy Y. N. Srikant

Compiler optimizations need precise and scalable analyses to discover program properties. We propose a partially flow-sensitive framework that tries to draw on the scalability of flow-insensitive algorithms while providing more precision at some specific program points. Provided with a set of critical nodes — basic blocks at which more precise information is desired — our partially flow-sensiti...

2014
Scott A. Kofoed

Various technologies have been used to measure airway flow for human respiration. This paper presents a flow sensor (pneumotach} that is capable of continuous, bi-directional airway flow measurement proximal to the patient and used in a critical care environment. This paper presents some of the findings of the research that was done in the development of a n~w flow sensor for long term flow mon...

1999
D. E. McKenzie H. S. Hudson

In this Letter, we describe a solar flare that was observed by Yohkoh in 1999 January 20. This long-duration event is notable because the Yohkoh images show not only the formation of the arcade associated with the coronal mass ejection but also a considerable amount of motion above the arcade in the region normally identified with a large-scale current sheet or the outflow from magnetic reconne...

2004
Rafael Mihalic

Restructuring and liberalization of electric power markets in recent years present new challenges to network operators. Existing transmission assets are being pushed to their physical limits in order to increase overall utilization of transmission networks. Additionally, demand for electric energy is steadily increasing, which further stresses network components. This leads to congested transmi...

2008
Biman B. Nath

We study steady, homogeneous and subsonic cooling flows in poor clusters of galaxies in light of the recent proposal that radiative cooling of the intracluster gas can explain the observations of the ‘entropy floor’ and other related X-ray observations. We study a family of cooling flow solutions parameterized by the mass flux rate, and then determine the resulting entropy and the X-ray luminos...

2014
Shira Chapman Carlos Hoyos

We construct the first order hydrodynamics of quantum critical points with Lifshitz scaling and a spontaneously broken symmetry. The fluid is described by a combination of two flows, a normal component that carries entropy and a super-flow which has zero viscosity and carries no entropy. We analyze the new transport effects allowed by the lack of boost invariance and constrain them by the local...

2001
Paul R. Meiller

The valve mass flux Gv is the calculated value for an ideal (isentropic) nozzle Gn from an appropriate model, multiplied by a discharge coefficient Kd, which accounts for any discrepancies between the (ideal) nozzle model and flow in a real nozzle, as well as any differences between the flow in the nozzle and the actual valve: Gv = Kd Gn (2) As shown in Figure 1, there are obvious similarities ...

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