Results 61 to 70 of about 1,763,300 (351)
Frontiers in Physics, 2023 The spin-exchange relaxation-free comagnetometer (SERFC) is of important research value compared to existing high-precision gyroscopes because of its extremely high theoretical limit sensitivity and long-term stability, in which one significant limiting ...
Zhihong Wu +11 more
doaj +1 more source
Comparing magnetic field extrapolations with measurements of magnetic loops [PDF]
Astronomy & Astrophysics, 2005 We compare magnetic field extrapolations from a photospheric magnetogram with the observationally inferred structure of magnetic loops in a newly developed active region. This is the first time that the reconstructed 3D-topology of the magnetic field is available to test the extrapolations.
Wiegelmann, T. +4 more
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Analysis of Magnetic Field Measurements for Indoor Positioning
Sensors, 2022 Infrastructure-free magnetic fields are ubiquitous and have attracted tremendous interest in magnetic field-based indoor positioning. However, magnetic field-based indoor positioning applications face challenges such as low discernibility, heterogeneous devices, and interference from ferromagnetic materials.
Guanglie Ouyang, Karim Abed-Meraim
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Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objectives Retrograde trans‐synaptic degeneration (rTSD) from posterior visual pathway lesions in multiple sclerosis (MS) is characterized by hemi‐macular ganglion cell‐inner plexiform layer (GCIPL) thinning and contralateral visual field loss.
Abdul Jaber Tayem +17 more
wiley +1 more source
Spatial accuracy evaluation of magnetic source imaging methods on OPM-based MEG
iScience, 2022 Summary: The emergence of the optically pumped magnetometer (OPM)-based magnetoencephalography (MEG) has led to new developments in MEG technology.
Nan An +11 more
doaj +1 more source
On Measuring Divergence for Magnetic Field Modeling
The Astrophysical Journal, 2020 Abstract A physical magnetic field has a divergence of zero. Numerical error in constructing a model field and computing the divergence, however, introduces a finite divergence into these calculations. A popular metric for measuring divergence is the average fractional flux
S. A. Gilchrist +4 more
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A Method of Critical Magnetic-Field Measurement for High-Field Superconductors in Pulsed Magnetic Fields [PDF]
Journal of Applied Physics, 1966 A high magnetic-field magnetization technique has been devised which allows rapid measurement of superconducting to normal transition fields (Hc2*) for bulk high-field superconductors in pulsed magnetic fields up to 200 kG. Values of Hc2* so obtained are in good agreement with those obtained by resistive techniques.
Suenaga, M., Rails, K.M.
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, 1997 P(論文)The fine structure of chert and BIF was analyzed by magnetic measurement and Scanning X-ray Analyzed Microscope. The magnetic study was done by the HFD system of magnetic field analysis with high Tc (superconducting critical temperature) SQUID.
タカノ, マサオ +9 more
core +1 more source
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective To explore how cerebral hypoxia and Normal‐Appearing White Matter (NAWM) integrity affect MS lesion burden and clinical course. Methods Seventy‐nine MS patients, including 13 clinically isolated syndrome (CIS) patients and 66 relapsing–remitting multiple sclerosis (RRMS) patients, and 44 healthy controls (HCs) were recruited from ...
Xinli Wang +8 more
wiley +1 more source
Measurement of Magnetic Field in Dentistry
Collegium antropologicum, 2000 The principal objective was to measure the magnetic fields occurring in dental surgeries at simultaneous subtraction of direct ground component of the magnetic field. A specifically designed instrument with the Hall probe was used for the measurement. It consisted of two amplifiers and a low frequency filter.
Buković, Dino +4 more
openaire +4 more sources