Results 71 to 80 of about 103,955 (369)

Changes in left ventricular electromechanical relations during targeted hypothermia

open access: yesIntensive Care Medicine Experimental, 2020
Background Targeted hypothermia, as used after cardiac arrest, increases electrical and mechanical systolic duration. Differences in duration of electrical and mechanical systole are correlated to ventricular arrhythmias.
Kristin Wisløff-Aase   +5 more
doaj   +1 more source

Cardiac Electromechanical Activity in Healthy Cats and Cats with Cardiomyopathies

open access: yesSensors, 2023
Optimal heart function depends on perfect synchronization between electrical and mechanical activity. In this pilot study, we aimed to investigate the electromechanical activity of the heart in healthy cats and cats with cardiomyopathy with ...
Maja Brložnik   +4 more
doaj   +1 more source

Random regular graphs and the systole of a random surface [PDF]

open access: yes, 2013
We study the systole of a random surface, where by a random surface we mean a surface constructed by randomly gluing together an even number of triangles.
Bram Petri
semanticscholar   +1 more source

Metaphors in Systolic Geometry [PDF]

open access: yesProceedings of the International Congress of Mathematicians 2010 (ICM 2010), 2011
This is an expository essay about systolic geometry. It describes a central theorem in the subject and why the proof is difficult. Then it discusses different metaphors which suggest ways to approach the problem. The metaphors connect the systolic inequality to minimal surfaces, topological dimension, scalar curvature, and hyperbolic geometry.
openaire   +3 more sources

VARIABILITAS TEKANAN DARAH INTRADIALISIS PASIEN PENYAKIT GINJAL KRONIS DENGAN HEMODIALISIS BERKELANJUTAN

open access: yesMajalah Biomorfologi, 2019
Background: Various of studies report there was a link between changes in blood pressure during hemodialysis and the level of patient’s morbidity and mortality.
Maulana Muhtadin Suryansyah   +2 more
doaj   +1 more source

Growth of the Weil-Petersson inradius of moduli space [PDF]

open access: yes, 2018
In this paper we study the systole function along Weil-Petersson geodesics. We show that the square root of the systole function is uniformly Lipschitz on Teichm\"uller space endowed with the Weil-Petersson metric.
Wu, Yunhui
core   +3 more sources

Reliability in Using Routine Coronary CT Angiography with Retrospective Electrocardiographic Gating for the Comprehensive Functional Evaluation of the Left Ventricle

open access: yes대한영상의학회지, 2019
Purpose To evaluate the feasibility of comprehensive left ventricle (LV) functional parameters on routine coronary computed tomographic angiography (CCTA) based on two-dimensional echocardiography (2DE).
Eun-Ju Kang   +3 more
doaj   +1 more source

Systolic and Hyper-Systolic Algorithms for the Gravitational N-Body Problem, with an Application to Brownian Motion [PDF]

open access: yesJ.Comput.Phys. 185 (2003) 484-511, 2001
A systolic algorithm rhythmically computes and passes data through a network of processors. We investigate the performance of systolic algorithms for implementing the gravitational N-body problem on distributed-memory computers. Systolic algorithms minimize memory requirements by distributing the particles between processors.
arxiv   +1 more source

STUDIES ON THE CONSECUTIVE PHASES OF THE CARDIAC CYCLE: II. The Laws Governing the Relative Durations of Ventricular Systole and Diastole

open access: yes, 1921
During the course of investigations pertaining to the behavior of the heart under certain experimental pathological conditions, it became evident that the compensatory phenomena of the ventricles involve not only changes in the vigor of the ventricular ...
C. Wiggers
semanticscholar   +1 more source

Effects of cardiac motion on dose distribution during stereotactic arrhythmia radioablation treatment: A simulation and phantom study

open access: yesJournal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose Cardiac motion may degrade dose distribution during stereotactic arrhythmia radioablation using the CyberKnife system, a robotic radiosurgery system. This study evaluated the dose distribution changes using a self‐made cardiac dynamic platform that mimics cardiac motion. Methods The cardiac dynamic platform was operated with amplitudes
Takayuki Miyachi   +6 more
wiley   +1 more source

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