Results 91 to 100 of about 260,398 (191)

Postural tachycardia syndrome: current perspectives

open access: yesVascular Health and Risk Management, 2017
Rachel Wells,1,2 Andrew J Spurrier,3 Dominik Linz,1 Celine Gallagher,1 Rajiv Mahajan,1 Prashanthan Sanders,1 Amanda Page,4 Dennis H Lau1 1Centre for Heart Rhythm Disorders, South Australian Health and Medical Research Institute, University of Adelaide ...
Wells R   +7 more
doaj  

Autonomic Testing in Functional Gastrointestinal Disorders: Implications of Reproducible Gastrointestinal Complaints during Tilt Table Testing

open access: yesGastroenterology Research and Practice, 2009
Background: The pathophysiology of functional abdominal pain (FAP) is unknown. The upright portion of a tilt table test triggers typical symptoms in certain children. Aim: To compare the pathophysiology and treatment response of children with FAP whose
Shaista Safder   +3 more
doaj   +1 more source

Recommendations for tilt table testing and other provocative cardiovascular autonomic tests in conditions that may cause transient loss of consciousness : Consensus statement of the European Federation of Autonomic Societies (EFAS) endorsed by the American Autonomic Society (AAS) and the European Academy of Neurology (EAN) [PDF]

open access: hybrid, 2021
Roland D. Thijs   +14 more
openalex   +1 more source

Subband Engineering Even-Denominator Quantum Hall States

open access: yes, 2010
Proposed even-denominator fractional quantum Hall effect (FQHE) states suggest the possibility of excitations with non-Abelian braid statistics. Recent experiments on wide square quantum wells observe even-denominator FQHE even under electrostatic tilt ...
B. I. Halperin   +5 more
core   +1 more source

Galactic kinematics with modified Newtonian dynamics

open access: yes, 2009
We look for observational signatures that could discriminate between Newtonian and modified Newtonian (MOND) dynamics in the Milky Way, in view of the advent of large astrometric and spectroscopic surveys.
Angus   +56 more
core   +2 more sources

COMPARISON OF HEART RATE VARIABILITY IN NEGATIVE AND POSITIVE RESPONDERS TO ACTIVE PHASE OF HEAD-UP TILT TEST

open access: yesPakistan Armed Forces Medical Journal, 2018
Objective: To compare heart rate variability in negative and positive responders to active phase of head-up tilt test. Study Design:Cross-sectional comparative study.
Sara Naeem   +3 more
doaj  

Cardiac and Musculoskeletal Responses to the Effects of Passive and Active Tilt Test in Healthy Subjects

open access: yesArquivos Brasileiros de Cardiologia
Background: Maintenance of orthostatism requires the interaction of autonomic and muscle responses for an efficient postural control, to minimize body motion and facilitate venous return in a common type of syncope called neurocardiogenic syncope (NCS ...
Rogerio Ferreira Liporaci   +5 more
doaj   +1 more source

Thermal noise limitations to force measurements with torsion pendulums: Applications to the measurement of the Casimir force and its thermal correction

open access: yes, 2004
A general analysis of thermal noise in torsion pendulums is presented. The specific case where the torsion angle is kept fixed by electronic feedback is analyzed. This analysis is applied to a recent experiment that employed a torsion pendulum to measure
Aldert Van der Ziel   +14 more
core   +1 more source

Octahedral coupling in (111)- and (001)-oriented La$_{2/3}$Sr$_{1/3}$MnO$_3$/SrTiO$_3$ heterostructures

open access: yes, 2018
Rotations and distortions of oxygen octahedra in perovskites play a key role in determining their functional properties. Here we investigate how octahedral rotations can couple from one material to another in La$_{2/3}$Sr$_{1/3}$MnO$_3$/SrTiO$_3 ...
Moreau, Magnus   +2 more
core   +1 more source

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