Results 61 to 70 of about 2,829 (158)

QUARTZ MAGNETOMETER-GRADIOMETER

Themed collection of papers from Foreign international scientific conference «Joint innovation - joint development». by HNRI «National development» in cooperation with PS of UA. February 2024. - Cuangzhou (China)
The work is devoted to the description of the design of a magnetometer-gradiometer created on the basis of quartz sensors, which has the ability to carry out synchronous measurements at two points spaced apart in space on a fixed or arbitrarily located "measuring base" ∆L with different distances of these measuring points from each other. The device is
openaire   +3 more sources

Combined EEG/MEG can outperform single modality EEG or MEG source reconstruction in presurgical epilepsy diagnosis.

PLoS ONE, 2015
We investigated two important means for improving source reconstruction in presurgical epilepsy diagnosis. The first investigation is about the optimal choice of the number of epileptic spikes in averaging to (1) sufficiently reduce the noise bias for an
Ümit Aydin, Johannes Vorwerk, Matthias Dümpelmann, Philipp Küpper, Harald Kugel, Marcel Heers, Jörg Wellmer, Christoph Kellinghaus, Jens Haueisen, Stefan Rampp, Hermann Stefan, Carsten H Wolters   +11 more
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Pulsed vector atomic magnetometer using an alternating fast-rotating field

Nature Communications
We introduce a vector atomic magnetometer that employs a fast-rotating magnetic field applied to a pulsed 87Rb scalar atomic magnetometer. This approach enables simultaneous measurements of the total magnetic field and its two polar angles relative to ...
Tao Wang, Wonjae Lee, Mark Limes, Thomas Kornack, Elizabeth Foley, Michael Romalis   +5 more
doaj   +1 more source

Applicability of Small and Low-Cost Magnetic Sensors to Geophysical Exploration

Sensors
In the past few decades, there has been a notable technological advancement in geophysical sensors. In the case of magnetometry, several sensors were used, having the common feature of being miniaturized and lightweight, thus idoneous to be carried by ...
Filippo Accomando, Giovanni Florio
doaj   +1 more source

Cortical Proprioceptive Processing Is Altered by Aging

Frontiers in Aging Neuroscience, 2018
Proprioceptive perception is impaired with aging, but little is known about aging-related deterioration of proprioception at the cortical level. Corticokinematic coherence (CKC) between limb kinematic and magnetoencephalographic (MEG) signals reflects ...
Harri Piitulainen, Harri Piitulainen, Santtu Seipäjärvi, Janne Avela, Tiina Parviainen, Simon Walker   +5 more
doaj   +1 more source

Laboratory dynamic accuracy evaluation method and system verification for gravity gradiometer

地震科学进展
To meet the demand for reliably evaluating the measurement accuracy of the gravity gradiometer under dynamic conditions, a method for dynamically assessing the accuracy of the gravity gradiometer in a laboratory setting was proposed.
Da Li, Chengsuo Li, Wei Gao, Zishan Zhang, Li Wu, Zhong Li   +5 more
doaj   +1 more source

The Benefits of Future Quantum Accelerometers for Satellite Gravimetry

Earth and Space Science
We investigate the benefits of future quantum accelerometers based on cold atom interferometry (CAI) on current and upcoming satellite gravity mission concepts.
P. Zingerle, M. Romeshkani, J. Haas, T. Gruber, A. Güntner, J. Müller, R. Pail   +6 more
doaj   +1 more source

Design of an Integrated MEMS Magnetic Gradiometer Rejecting Vibrations and Stray Fields

IEEE Journal of the Electron Devices Society
Magnetic sensors are often used near current-carrying wires or electrical motors generating significant magnetic interference. To mitigate the effects of these stray fields, the traditional design approach relies on a differential sensing scheme ...
Enrico Gasparin, Arno Hoogerwerf, Dara Bayat, Guido Spinola Durante, Yves Petremand, Maurizio Tormen, Michel Despont, Gael Close   +7 more
doaj   +1 more source

Motion artifact variability in biomagnetic wearable devices

Frontiers in Medical Technology
Motion artifacts can be a significant noise source in biomagnetic measurements when magnetic sensors are not separated from the signal source. In ambient environments, motion artifacts can be up to ten times stronger than the desired signals, varying ...
Negin Ghahremani Arekhloo, Negin Ghahremani Arekhloo, Huxi Wang, Huxi Wang, Hossein Parvizi, Asfand Tanwear, Siming Zuo, Michael McKinlay, Carlos Garcia Nuñez, Kianoush Nazarpour, Kianoush Nazarpour, Hadi Heidari, Hadi Heidari   +12 more
doaj   +1 more source

Wavefront curvature and transverse atomic motion in time-resolved atom interferometry: Impact and mitigation

Physical Review Research
Time-resolved atom interferometry, as employed in applications such as gravitational-wave detection and searches for ultralight dark matter, requires precise control over systematic effects.
Noam Mouelle, Jeremiah Mitchell, Valerie Gibson, Ulrich Schneider   +3 more
doaj   +1 more source