Results 11 to 20 of about 12,919 (199)

Migraine aura, a predictor of near-death experiences in a crowdsourced study [PDF]

PeerJ, 2019
Background Near-death experiences (NDE) occur with imminent death and in situations of stress and danger but are poorly understood. Evidence suggests that NDE are associated with rapid eye movement (REM) sleep intrusion, a feature of narcolepsy. Previous
Daniel Kondziella, Markus Harboe Olsen, Coline L. Lemale, Jens P. Dreier   +3 more
doaj   +2 more sources

Incidence of near-death experiences in patients surviving a prolonged critical illness and their long-term impact: a prospective observational study

Critical Care, 2023
Background So far, the few prospective studies on near-death experience (NDE) were carried out only in intensive care unit (ICU) patients with homogeneous aetiologies, such as cardiac arrest or trauma survivors.
Anne-Françoise Rousseau, Laurence Dams, Quentin Massart, Laila Choquer, Héléna Cassol, Steven Laureys, Benoit Misset, Nadia Dardenne, Olivia Gosseries, Charlotte Martial   +9 more
doaj   +1 more source

Monitoring of Post-Brain Injuries By Measuring Plasma Levels of Neuron-Derived Extracellular Vesicles

Biomarker Insights, 2022
Background: Extracellular vesicles (EV) released from neurons into the blood can reflect the state of nervous tissue. Measurement of neuron derived EV (NDE) may serve as an indicator of brain injury.
Naoshi Hotta, Takahiro Tadokoro, John Henry, Daisuke Koga, Keisuke Kawata, Hiroyuki Ishida, Yuko Oguma, Akihiro Hirata, Masato Mitsuhashi, Kenji Yoshitani   +9 more
doaj   +1 more source

Design of a Phased Array EMAT for Inspection Applications in Liquid Sodium

Sensors, 2019
This article describes the development of a French CEA in-house phased array Electro Magnetic Acoustic Transducer (EMAT) adapted to hot and opaque sodium environment for in-service inspection of Sodium Fast Reactors.
Laura Pucci, Raphaële Raillon, Laura Taupin, François Baqué   +3 more
doaj   +1 more source

Reality of near-death-experience memories: Evidence from a psychodynamic and electrophysiological integrated study

Frontiers in Human Neuroscience, 2014
The nature of near-death experiences (NDEs) is largely unknown but recent evidence suggests the intriguing possibility that NDEs may refer to actually perceived, and stored, experiences (although not necessarily in relation to the external physical world)
Arianna ePalmieri, Vincenzo eCalvo, Johann Roland Kleinbub, Federica eMeconi, Matteo eMarangoni, Paolo eBarilaro, Alice eBroggio, Marco eSambin, Paola eSessa, Paola eSessa   +9 more
doaj   +1 more source

Accurate magnetic field imaging using nanodiamond quantum sensors enhanced by machine learning

Scientific Reports, 2022
Nanodiamonds can be excellent quantum sensors for local magnetic field measurements. We demonstrate magnetic field imaging with high accuracy of 1.8  $$\upmu $$ μ T combining nanodiamond ensemble (NDE) and machine learning without any physical models. We
Moeta Tsukamoto, Shuji Ito, Kensuke Ogawa, Yuto Ashida, Kento Sasaki, Kensuke Kobayashi   +5 more
doaj   +1 more source

Improving defect detection of nuclear welds using adaptive imaging based on uncertain material parameters optimization

Acta Acustica
Weld inspection in the nuclear sector is crucial for ensuring the structural integrity and safety of reactor cooling piping systems. Given the strict safety requirements, reliable and accurate Non-Destructive Evaluation (NDE) techniques are essential for
Boukham Ali, Barras Jordan, Marmonier Maxance, Leymarie Nicolas   +3 more
doaj   +1 more source

Comparison of Pulse Thermography (PT) and Step Heating (SH) Thermography in Non-Destructive Testing of Unidirectional GFRP Composites

Fatigue of Aircraft Structures, 2019
This paper presents two techniques of active thermography i.e. the pulsed thermography technique and the step heating technique. The aim of this article is to compare these two techniques and present the possibilities, advantages and limitations of their
Kamińska Paulina, Ziemkiewcz Jarosław, Synaszko Piotr, Dragan Krzysztof   +3 more
doaj   +1 more source

Frequency Properties of an Air-Cored Coil and Application to Conductivity Measurement

IEEE Access, 2020
This study investigated the frequency properties of an air-cored coil and applied it to inspect conductivity change. Theoretical analysis and experimental study showed that what we measured is not the coil's own resistance and inductance but the ...
Weiying Cheng
doaj   +1 more source

Screening of Corrosion in Storage Tank Walls and Bottoms Using an Array of Guided Wave Magnetostrictive Transducers

Sensors
Aboveground storage tanks are used to store various fluids and chemicals for many industrial purposes. According to API standard 653, the structural integrity of these tanks must be regularly assessed. The U.S.
Sergey Vinogradov, Nikolay Akimov, Adam Cobb, Jay Fisher   +3 more
doaj   +1 more source