Results 281 to 290 of about 550,699 (320)

Comet: Tales from the Long Tail: Two Years In and 10,000 Users Later

Practice and Experience in Advanced Research Computing, 2017
The Comet petascale supercomputer was put into production as an XSEDE resource in early 2015 with the goal of serving a much larger user community than HPC systems of similar size.
Shawn M. Strande, Haisong Cai, T. Cooper, K. Flammer, Christopher Irving, G. Laszewski, A. Majumdar, D. Mishin, P. Papadopoulos, W. Pfeiffer, R. Sinkovits, M. Tatineni, R. Wagner, Fugang Wang, Nancy Wilkins-Diehr, N. Wolter, M. Norman   +16 more
semanticscholar   +1 more source

TURBULENCE IN THE SOLAR WIND MEASURED WITH COMET TAIL TEST PARTICLES

, 2015
By analyzing the motions of test particles observed remotely in the tail of Comet Encke, we demonstrate that the solar wind undergoes turbulent processing enroute from the Sun to the Earth and that the kinetic energy entrained in the large-scale ...
C. Deforest, W. Matthaeus, T. Howard, D. Rice   +3 more
semanticscholar   +1 more source

"Comet tail" artefact in diagnosis of pulmonary congestion in patients with diastolic heart failure.

Georgian medical news, 2013
The aim of this study was to evaluate the importance of thoracic ultrasound examination in diagnosis of DHF. Total of 380 patients with HF were evaluated. 86 patients had diastolic HF (I group) and 294 patients had systolic HF (II group).
M. Tsverava, D. Tsverava
semanticscholar   +1 more source

The comet-tail artifact. An ultrasound sign of alveolar-interstitial syndrome.

American Journal of Respiratory and Critical Care Medicine, 1997
Can ultrasound be of any help in the diagnosis of alveolar-interstitial syndrome? In a prospective study, we examined 250 consecutive patients in a medical intensive care unit: 121 patients with radiologic alveolar-interstitial syndrome (disseminated to ...
An Ultrasound, D. Lichtenstein, G. Mezière, P. Biderman, A. Gepner, O. Barré, Lichtenstein D   +6 more
semanticscholar   +1 more source

Regions of Backprojection and Comet Tail Artifacts for Pi-Line Reconstruction Formulas in Tomography

SIAM Journal of Imaging Sciences, 2012
We explore two characteristic features of x-ray computed tomography inversion formulas in two and three dimensions that are dependent on $\pi$-lines.
Ryan Hass, A. Faridani
semanticscholar   +1 more source

Early subclinical increase in pulmonary water content in athletes performing sustained heavy exercise at sea level: ultrasound lung comet-tail evidence.

American Journal of Physiology. Heart and Circulatory Physiology, 2011
Whether prolonged strenuous exercise performed by athletes at sea level can produce interstitial pulmonary edema is under debate. Chest sonography allows to estimate extravascular lung water, creating ultrasound lung comet-tail (ULC) artifacts.
A. Pingitore, E. Garbella, P. Piaggi, D. Menicucci, F. Frassi, Vincenzo Lionetti, Andrea Piarulli, G. Catapano, V. Lubrano, M. Passera, G. Di Bella, C. Castagnini, S. Pellegrini, M. Metelli, R. Bedini, A. Gemignani, A. L'Abbate   +16 more
semanticscholar   +1 more source

Comet-Tail-Like Inflammatory Infiltrate to Polymer Filaments Develops in Tension-Free Conditions

European Surgical Research, 2010
Background: Mesh reinforcement in hiatal hernia repair becomes more frequent but is charged by complications such as erosion or stenosis of the oesophagus.
Christian D. Klink, Marcel Binnebösel, D. Kaemmer, A. Schachtrupp, A. Fiebeler, M. Anurov, Volker Schumpelick, U. Klinge   +7 more
semanticscholar   +1 more source

"Ultrasound comet-tail images": a marker of pulmonary edema: a comparative study with wedge pressure and extravascular lung water.

Chest, 2005
BACKGROUND Echographic examination of the lung surface may reveal multiple "comet-tail images" originating from water-thickened interlobular septa. These images could be useful for noninvasive assessment of interstitial pulmonary edema.
E. Agricola, T. Bove, M. Oppizzi, G. Marino, A. Zangrillo, A. Margonato, E. Picano   +6 more
semanticscholar   +1 more source

Color comet-tail artifact: clinical applications.

AJR. American journal of roentgenology, 2009
OBJECTIVE This article explores the circumstances under which the color comet-tail artifact occurs and illustrates the clinical value of the artifact. CONCLUSION Subtle abnormalities on gray-scale sonograms often are better appreciated and understood ...
Hisham Tchelepi, P. Ralls
semanticscholar   +1 more source

The Structure of Comet Tails

Scientific American, 1986
Present models of the plasma tails of comets are described. The interaction of the solar wind with ions from the cometary atmosphere is discussed, and the phenomenon of magnetic reconnection observed in plasma tails is explained. The accomplishments of the ICE mission to the Comet Giacobini-Zinner are summarized, and the tasks and expected ...
John C. Brandt, Malcolm B. Niedner
openaire   +2 more sources