Results 31 to 40 of about 140,209 (335)
Computer Models of Spiral Structure [PDF]
Symposium - International Astronomical Union, 1970 A computer model for isolated disks of stars is used to study the self-consistent motion of large numbers of point masses as they move in the plane of the galactic disk. The Langley Research Center's CDC 6600 computers are used to integrate the equations of motion for systems containing from 50000 to 200000 stars.
openaire +1 more source
Evaluation of some spiral and sequential computed tomography protocols of adults used in three hospitals in Shiraz, Iran with American College of Radiology and European Commission guidelines [PDF]
, 2018 Purpose: Use of computed tomography (CT) has increased considerably all over the world. In addition, there has been an increased demand for utilisation of CT scanning in Iran over the past decade, especially after introducing multi-detector computed ...
Eghlidospoor +2 more
core +1 more source
Indian Journal of Urology, 2009 Persistent hematuria is one of the most dreaded complications following percutanous nephrolithotomy (PCNL). Although invasive, a catheter-based angiogram is usually used to localize the bleeding vessel and subsequently embolize it.
S E Sivanandam +2 more
doaj +1 more source
The Effect of Individual Stone Dimensions on Stone Passage Rates
Journal of Urological Surgery, 2021 Objective:The aim of this study is to determine the relationship between each of the three dimensions of a ureteric stone and the passage rate and to identify ureteric stones with an oval/elongated shape and determine whether the stone passage rate was ...
Dwayne Chang +3 more
doaj +1 more source
Extinction Dynamics of Cardiac Fibrillation [PDF]
, 2018 During episodes of atrial fibrillation, the heart's electrical activity becomes disorganized and shows fragmenting spiral waves. To systematically address how this pattern terminates using spatially extended simulations exceeds current computational ...
Rappel, Wouter-Jan, Vidmar, David
core +2 more sources
A grid of chemical evolution models along the Hubble Sequence [PDF]
, 2001 We have computed a grid of multiphase chemical evolution models whose results are valid for any spiral galaxy, using as input the maximum rotation velocity and the morphological type or index T.Comment: 2 pag., contribution to the conference Cosmic ...
Diaz, Angeles I. +2 more
core +3 more sources
Dust trapping by spiral arms in gravitationally unstable protostellar discs [PDF]
, 2015 In this paper we discuss the influence of gravitational instabilities in massive protostellar discs on the dynamics of dust grains. Starting from a Smoothed Particle Hydrodynamics (SPH) simulation, we have computed the evolution of the dust in a quasi ...
Dipierro, Giovanni +3 more
core +2 more sources
Effects of early afterdepolarizations on excitation patterns in an accurate model of the human ventricles [PDF]
, 2017 Early Afterdepolarizations, EADs, are defined as the reversal of the action potential before completion of the repolarization phase, which can result in ectopic beats.
Panfilov, Alexander +3 more
core +3 more sources
Helical/spiral computed body tomography
Clinical Radiology, 1997 Summary Helical CT has profound implications for routine imaging in the chest and abdomen as well for specialized imaging of hollow organs and blood vessels. The ability to image the chest or abdomen in a single breath and to review overlapping images retrospectively has improved our ability to detect and measure the attenuation of small lesions ...
J A, Brink, E G, McFarland, J P, Heiken
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International Brazilian Journal of Urology, 2010 PURPOSE: This prospective study was performed to achieve visualization of the reestablishment of anatomy after reconstructive surgery in the different pelvic compartments with non-absorbable radiopaque meshes, providing valuable anatomic information for ...
Paulo Palma +4 more
doaj +1 more source