نتایج جستجو برای: spiral

تعداد نتایج: 32206  

2005
Nikolas Kroupis Minas Dasygenis Dimitrios Soudris Adonios Thanailakis

community is multimedia devices. Multimedia devices incorporate a number of complicated functions for their operation, like motion estimation. A multitude of different implementations have been proposed to reduce motion estimation complexity, such as spiral search. We have studied the implementations of spiral search and identified areas of improvement. We propose a modified spiral search motio...

Journal: :trauma monthly 0
ameya jagdish baxi department of radiology, university of texas health science center, san antonio, usa; department of radiology, university of texas health science center, san antonio, usa. tel: +1-2105675535 carlos restrepo department of radiology, university of texas health science center, san antonio, usa amy mumbower department of radiology, university of texas health science center, san antonio, usa michael mccarthy department of radiology, university of texas health science center, san antonio, usa katre rashmi department of radiology, university of texas health science center, san antonio, usa

trauma is the leading cause of death in united states in the younger population. cardiac trauma is common following blunt chest injuries and is associated with high morbidity and mortality. this study discusses various multidetector computed tomography (mdct) findings of cardiac trauma. cardiac injuries are broadly categorized into the most commonly occurring blunt cardiac injury and the less c...

Journal: :iranian journal of immunology 0
abdolkarim sheikhi departments of immunology hossein b. ganji and anatomy, school of medicine, zanjan university of medical sciences, zanjan, iran razieh sheikhi department of environmental health, faculty of health sciences, tehran university of medical sciences, tehran, iran

background: uterine natural killer (unk) cells are the most abundant leukocytes in pre-implantation endometrium and early pregnancy deciduas in humans and rodents. they are associated with structural changes in maternal spiral arteries but regulation of their re-cruitment and activation is incompletely understood. the major subpopulation of unk cells in humans expresses cd56, the neural cell ad...

2011
Chengjun WANG

The purpose of this exploratory study is threefold: first, to analytically explore the boundary conditions of the robust existence of spiral of silence; second, to gauge how social interactions influence the formation of spiral of silence; third, to analyze the dynamic characteristics of the process in the aspect of size-dependent and time heterogeneity. By proposing an agent-based model of spi...

Journal: :Folia morphologica 2006
A Bibas R Hornigold J Liang L Michaels S Anagnostopoulou A Wright

The development of the spiral ganglion was studied in steps sections of 81 human temporal bones. By the 8th week, the spiral ganglion has already separated from the vestibular ganglion. At 13 weeks two distinct populations are observed that correspond to neuron and Schwann cells. At 15 weeks the spiral ganglion has increased its distance from the cochlear duct and is surrounded by mesenchyme ne...

Journal: :AJNR. American journal of neuroradiology 1994
J N Suojanen S K Mukherji F J Wippold

PURPOSE To compare conventional and spiral CT studies of the larynx. METHODS Ten patients had both conventional and spiral CT studies of the neck using 5-mm section collimation and 5-mm increments. The spiral scans also were reconstructed at 2-mm increments. Five patients had two spiral CT larynx studies with 5-mm and 2-mm collimation. Two observers independently rated the visibility of laryn...

2012
Nikolaos Kroupis Minas Dasygenis Dimitrios Soudris Antonios Thanailakis

One of the most growing areas in the embedded community is multimedia devices. Multimedia devices incorporate a number of complicated functions for their operation, like motion estimation. A multitude of different implementations have been proposed to reduce motion estimation complexity, such as spiral search. We have studied the implementations of spiral search and identified areas of improvem...

1997
P. A. Patsis

We study the response of gaseous disks, under the influence of spiral perturbations. In particular we compare the morphology of spiral arms and interarm regions in SPH models, with Population I features observed onB images of normal, grand design spiral galaxies. We place the 4/1 resonance at the end of the strong symmetric spiral arms of these galaxies. This basic hypothesis, leads to the appe...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2009
Juan G Restrepo Alain Karma

Spiral wave propagation in period-2 excitable media is accompanied by line defects, the locus of points with period-1 oscillations. Here we investigate spiral line defects in cardiac tissue where period-2 behavior has a known arrhythmogenic role. We find that the number of line defects, which is constrained to be an odd integer, is 3 for a freely rotating spiral, with and without meander, but 1...

Journal: :Lab on a chip 2008
Hong Chen Lin Wang Paul C H Li

A microfluidic microarray that is created in the double spiral format has produced a greater density of probes than in our previous report. Using this double-spiral format together with centrifugal pumping for liquid delivery, 384 x 384 hybridization assays have been performed on one circular disk at one time, at the intersections between the spiral channels and spiral probe lines. Each sample ...

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