Results 121 to 130 of about 13,767,586 (365)

Usefulness of Tilt Testing in Children with Syncope: A Survey of Pediatric Electrophysiologists

open access: yesIndian Pacing and Electrophysiology Journal, 2008
The role of tilt table testing as a diagnostic modality in children with unexplained syncope is unclear. We sent a questionnaire to members of the Pediatric and Congenital Electrophysiology Society to assess the current practice pattern.
Anjan S. Batra, Seshadri Balaji
doaj  

A Different Perspective on the Solid Lubrication Performance of Black Phosphorous: Friend or Foe?

open access: yesAdvanced Engineering Materials, EarlyView.
Researchers investigate black phosphorous (BP) as a standalone solid lubricant coating through ball‐on‐disc linear‐reciprocating sliding experiments in dry conditions. Testing on different metals shows BP doesn't universally reduce friction and wear. However, it achieves 33% friction reduction on rougher iron surfaces and 23% wear reduction on aluminum.
Matteo Vezzelli   +5 more
wiley   +1 more source

ELECTROCARDIOGRAPHY PATTERNS OF TILT-INDUCED CARDIOINHIBITORY SYNCOPE IN CHILDREN AND ADOLESCENTS

open access: yesРоссийский кардиологический журнал, 2012
Aim. To study electrocardiographic patterns of tilt-induced cardioinhibitory (CI) reactions in children and adolescents. Material and methods. The study included 16 children and adolescents (10 boys), aged 8-18 years, with recurrent syncope in anamnesis ...
A. V. Pogodina   +2 more
doaj  

Direct measurement of nonequilibrium system entropy is consistent with Gibbs-Shannon form

open access: yes, 2017
Stochastic thermodynamics extends classical thermodynamics to small systems in contact with one or more heat baths. It can account for the effects of thermal fluctuations and describe systems far from thermodynamic equilibrium. A basic assumption is that
Bechhoefer, John   +2 more
core   +2 more sources

Can the result of a tilt test be predicted in the first five minutes?

open access: yesCardiology Journal, 2011
BACKGROUND Head-up tilt testing (HUT) plays a pivotal role in the management of vasovagal syncope (VVS). Heart rate variability (HRV) is a well-known method used for noninvasive evaluation of autonomic nervous system activity.
D. Duplyakov   +3 more
semanticscholar   +1 more source

Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control

open access: yesAdvanced Engineering Materials, EarlyView.
This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian   +4 more
wiley   +1 more source

ShaneAO: wide science spectrum adaptive optics system for the Lick Observatory

open access: yes, 2014
A new high-order adaptive optics system is now being commissioned at the Lick Observatory Shane 3-meter telescope in California. This system uses a high return efficiency sodium beacon and a combination of low and high-order deformable mirrors to achieve
Cabak, Jerry   +16 more
core   +1 more source

Consolidate Overview of Ribonucleic Acid Molecular Dynamics: From Molecular Movements to Material Innovations

open access: yesAdvanced Engineering Materials, EarlyView.
Molecular dynamics simulations are advancing the study of ribonucleic acid (RNA) and RNA‐conjugated molecules. These developments include improvements in force fields, long‐timescale dynamics, and coarse‐grained models, addressing limitations and refining methods.
Kanchan Yadav, Iksoo Jang, Jong Bum Lee
wiley   +1 more source

Autonomic responses to orthostatic stress in head‐up tilt testing: Relationship to test‐induced prolonged asystole [PDF]

open access: bronze, 1997
Bonpei Takase   +9 more
openalex   +1 more source

Deformation Behavior of La2O3‐Doped Copper during Equal Channel Angular Pressing

open access: yesAdvanced Engineering Materials, EarlyView.
By additions of strengthening elements and/or structure optimization, the mechanical properties of copper can be increased while keeping favorable electric conductivity. By combining addition of La2O3 and processing by equal channel angular pressing, substructure development is achieved, leading to increase in microhardness to more than double the ...
Lenka Kunčická   +2 more
wiley   +1 more source

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