Results 121 to 130 of about 331,160 (298)

Long QT syndrome diagnosis may be affected by positive tilt table test; a cross-sectional study [PDF]

open access: green, 2023
Mohammad Hossein Nikoo   +5 more
openalex   +1 more source

3D‐Printed Architected Material for the Generation of Foam‐Based Protective Equipment

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates 3D‐printed architected structures as alternatives to traditional foams in protective gear. It focuses on customizing impact strength and damping through design and manufacturing integration. Testing shows these structures outperform conventional foams, offering enhanced customizability, lower weight, and tunable performance ...
Ali Zolfagharian   +5 more
wiley   +1 more source

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  

Femtosecond Single‐ and Double‐Pulse Fabrication of Periodic Nanostructures on Stainless Steel for Surface‐Enhanced Raman Spectroscopy

open access: yesAdvanced Engineering Materials, EarlyView.
Periodic submicron features are fabricated on 304 stainless steel using single and double femtosecond laser pulses. By adjusting polarization, fluence, and inter‐pulse delay, 1D and 2D nanostructures are formed. Enhanced hydrophobicity and dense surface‐enhanced Raman spectroscopy hotspots enable analyte detection down to 10−10 M with good ...
Balaji Baskar   +3 more
wiley   +1 more source

Simultaneous eeg and transcranial doppler during tilt table testing: Correlation with positivity type? [PDF]

open access: bronze, 2001
S Silvani   +6 more
openalex   +1 more source

Tribology of ZrC Coatings and Spherical Tips Acquired with Extraordinarily Stiff, Metal Atomic Force Microscopy Probes

open access: yesAdvanced Engineering Materials, EarlyView.
In this research, ZrC coatings are evaluated against various counterprobes at the microscale using novel super‐stiff atomic force microscopy cantilevers. The chemical composition of the coating is shown to be an important factor influencing coating hardness and Young's modulus, while surface roughness, counterprobe hardness, and surface energy are the ...
Piotr Jenczyk   +4 more
wiley   +1 more source

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

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