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691 results for “magnetic field”
Total Electron Content and Magnetic Field TIme Series Survey Plots during THEMIS/CMO/FAIR Magnetic Conjunctions
<p>These survey plots are for time intervals corresponding to magnetic conjunctions between (1) NASA's Time History of Events and Macroscale Interactions during Substorms (THEMIS) satellites, (2) USGS College Alaska (CMO) magnetic observatory, and (3) the FAIR GNSS receiver near Fairbanks, Alaska. Magnetic field measurements are used from THEMIS (~3s sampling interval) and CMO (1s sampling interval), while 1s Total Electron Content (TEC) measurements are used from high-rate RINEX data for FAIR obtained from the NASA Crustal Dynamics Data Information System (CDDIS) archive of space geodesy data. The plots also contain solar wind measurements and geomagnetic activity indices from NASA's OMNIWeb (https://omniweb.gsfc.nasa.gov/) database for the same magnetic conjunction intervals. </p> <p>The time series stackplots during each magnetic conjunction show the three components of Interplanetary Magnetic Field, Sym-H index, THEMIS satellite magnetic field perturbation, CMO ground-based magnetometer magnetic field perturbation, TEC perturbation from different GPS satellites-FAIR receiver pairs (specific GPS satellite varies from event to event), and elevation angle for the same GPS satellites.</p>
On the Piezomagnetism of Magnetoactive Elastomeric Cylinders in Uniform Magnetic Fields: Height Modulation in the Vicinity of an Operating Point by Time-Harmonic Fields
<p>This is the data set for all the figures in the paper with the title: "On the Piezomagnetism of Magnetoactive Elastomeric Cylinders in Uniform Magnetic Fields: Height Modulation in the Vicinity of an Operating Point by Time-Harmonic Fields" published in the Polymers journal (<a title="doi" href="https://doi.org/10.3390/polym16192706">doi:10.3390/polym16192706</a>).</p>
Movies for Figure 4 in "She's Got Her Mother's Hair: End-to-End Collapsar Simulations Unveil the Origin of Black Holes' Magnetic Field, (#AAS56924)"
<p>There are 10 videos: Six 2D vertical maps of the logarithmic mass density and four 3D renderings of the disk density (red) and jet magnetization (blue). In the 2D maps, the black contours outline the magnetic field lines, where solid and dashed lines delineate positive and negative magnetic polarity, respectively.</p> <p>The filenames correspond to the model names in the paper:</p> <p>Model a9ΦhD includes a rapidly spinning black hole with a high magnetic flux reservoir and large angular momentum to form a disk.</p> <p>Model a9ΦhI includes a rapidly spinning black hole with a high magnetic flux reservoir and small angular momentum that does not form a disk.</p> <p>Model a1ΦhD includes a slowly spinning black hole with a high magnetic flux reservoir and large angular momentum to form a disk.</p> <p>Model a9ΦlD includes a rapidly spinning black hole with a low magnetic flux reservoir and large angular momentum to form a disk.</p> <p>Model a5ΦlD includes a moderately spinning black hole with a low magnetic flux reservoir and large angular momentum to form a disk.</p> <p>Model a1ΦlD includes a slowly spinning black hole with a low magnetic flux reservoir and large angular momentum to form a disk.</p> <p>BHs with higher spins and magnetic fluxes retain the remnant poloidal field of the PNS to maintain steady jet launching. When the BH spin and the initial flux on the BH are low, or an accretion disk is absent (model a9ΦhI), the BH cannot sustain a large-scale field. As a result, magnetic loops of opposite polarity are accreted onto the BH, causing the BH magnetic flux to reconnect and reduce the flux on the BH, resulting in the depletion of jets.</p>
Two-photon absorption and second harmonic generation of 1S para- and orthoexcitons in Cu2O coupled by a magnetic field
<p>Dataset of the publication “Two-photon absorption and second harmonic generation of 1S para- and orthoexcitons in Cu2O coupled by a magnetic field“, (https://doi.org/10.1103/PhysRevB.102.115203). The xlsx file includes the measured datapoints on which the plots shown in figures 3, 4, 6-9 of the main text are based.</p>
Derived data for: "Variability of the interplanetary magnetic field as a driver of electromagnetic induction in Mercury's interior"
<p>Derived data for "Variability of the interplanetary magnetic field as a driver of electromagnetic induction in Mercury’s interior", accepted for publication in the Journal of Geophysical Research: Space Physics.</p>
Controlling fire color, ignition and a shape with magnetic field
<p>Few interesting experiments about the effect of magnetic field on fire ignition color and size when using a mixture of ferroelectric material (Iron oxide) and combustible material (Parafin Oil, paraffin). The effect of flame size and ignition can probably be explained by spikes increasing the material surface area, and the iron oxide act as a wick (like in a candle). The color switch when adding Boric Acid (B(OH)3 and sea salt (NaCl) when applying a magnetic field is harder to explain.</p> <p><strong>Procedures:</strong></p> <p><br> <strong>a) Flame color changes when applying a magnetic field (no idea why this happens)</strong><br> 1) To a small glass, add 16 ml of alcoholic gel (Dr. Fischer Alco-Gel 70%) or paraffin oil.<br> 2) Add one spoon of table salt (NaCl). Add one spoon of boric acid (B(OH)3). Add one spoon of Magnetite (Fe3O4) powder and stir.<br> 3) Pour a drop of the mixture on a glass plate and ignite. Use the magnet below the plate to control the flame color. <br> 4) To change the flame color from blue to red, put the magnet directly below the flame. <br> 5) To change the flame color from red to blue, move the magnet sideways along the plate.<br> To extinguish the fire, cover the flame with a small bowl.</p> <p><strong>b) Using a magnetic field to control fire ignition extinguishing and flame size.</strong><br> Ferromagnetic wax preparation:<br> 1. Add two spoons of paraffin wax (or oil) to glass (4-5 grams) and heat until the wax melt (60-100C).<br> 2. Add two spoons of magnetite (Fe₃O₄) powder (6-7 grams) to the melted wax. <br> 3. Mix until getting a uniform black solution and cool until the wax solidifies.<br> Usage: 1. Put a small amount of the ferromagnetic wax on a glass plate. 2. When touched by flame, the material will not ignite unless exposed to a magnetic field. 3. To enable ignition put a magnet directly below the wax. 4. To increase flame size, put the magnet directly below the fire. 5. To reduce the flame size or to extinguish/suppress flame put a magnet below the fire and move it sideways along the plate (fast movements will extinguish the fire).</p> <p><strong>c) Controlling flame movement with magnetic field:</strong></p> <p> First, create a flammable magnetic material (most standard ferrofluid will do well for this) <br> The ferrofluid can be prepared by the following steps<br> 1) Add about 6 ml of flammable oil (Parafin Oil or WD-40 oil works great). <br> 2) Add one spoon (about 8 grams) of Magnetite (Fe3O4) powder or any other ferromagnetic powder. <br> 3) stir until you get a uniform black mixture<br> Experiment:<br> 1) Pour a drop of the mixture on a glass plate and ignite. <br> 2) Use a magnet from below the plate to control the flame. <br> 3) To extinguish the fire, cover the flame with a small bowl. </p>
Data for Statistics on Jupiter's Current Sheet with Juno Data: Geometry, Magnetic Fields and Energetic Particles
<p>The statistical data of paper "Statistics on Jupiter’s Current Sheet with Juno Data: Geometry, Magnetic Fields and Energetic Particles"</p>
Dataset of "Impactor material records the ancient lunar magnetic field in antipodal anomalies"
<p>This dataset contains input files for iSALE-3D for the paper "Impactor material records the ancient lunar magnetic field in antipodal anomalies" by S. Wakita et al.<br> <br> Please note that usage of the iSALE-3D code is restricted to those who have contributed to the development of iSALE-2D, and iSALE-2D is distributed on a case-by-case basis to academic users in the impact community. It requires a registration from the iSALE webpage (http://www.isale-code.de), and usage of iSALE-2D and computational requirements are also shown there. Please also note that pySALEPlot in the current stable release of iSALE-2D (Dellen) would not work for the data from iSALE-3D.</p>
Does Uranus' asymmetric magnetic field produce a relatively weak proton radiation belt?
<p>Derived data shown in figures and computer code for the publication in Geophysical Research Letters.</p>
Derived data for: 'Modelling the Time-Dependent Magnetic Fields that BepiColombo will use to Probe Down into Mercury's Mantle'
<p>Derived data for the manuscript entitled 'Modelling the Time-Dependent Magnetic Fields that BepiColombo will use to Probe Down into Mercury’s Mantle'.</p>
Temperature Dependence of the Hyperfine Magnetic Field at Fe Sites in Ba-Doped BiFeO3 Thin Films Studied by Emission Mössbauer Spectroscopy
<p>Experimental data of the following manuscript:</p> <p>Temperature Dependence of the Hyperfine Magnetic Field at Fe Sites in Ba-Doped BiFeO<sub>3</sub> Thin Films Studied by Emission Mössbauer Spectroscopy</p> <p>Heiniger-Schell, J.; Bharuth-Ram, K.; Naicker, K.; Masondo, V.; Dang, T.T.; Escobar, M.; Díaz-Guerra, C.; Marschick, G.; Masenda, H.; Gunnlaugsson, H.P.; et al. Temperature Dependence of the Hyperfine Magnetic Field at Fe Sites in Ba-Doped BiFeO3 Thin Films Studied by Emission Mössbauer Spectroscopy. Crystals 2023, 13, 724. https://doi.org/10.3390/ cryst13050724</p> <p> </p> <p>Abstract</p> <p>Emission <sup>57</sup>Fe Mössbauer spectroscopy (eMS), following the implantation of radioactive <sup>57</sup>Mn<sup>+</sup> ions, has been used to study the temperature dependence of the hyperfine magnetic field at Fe sites in Ba-doped BiFeO<sub>3</sub> (BFO) thin films. <sup>57</sup>Mn β decays (t<sub>1/2</sub> = 90 s) to the 14.4 keV Mössbauer state of <sup>57</sup>Fe, thus allowing online eMS measurements at a selection of sample temperatures during Mn implantation. The eMS measurements were performed on two thin film BFO samples, 88 nm and 300 nm thick, and doped to 15% with Ba ions. The samples were prepared by pulsed laser deposition on SrTiO<sub>3</sub> substrates. X-ray diffraction analyses of the samples showed that the films grew in a tetragonal distorted structure. The Mössbauer spectra of the two films, measured at absorber temperatures in the range 301 K–700 K, comprised a central pair of paramagnetic doublets and a magnetic sextet feature in the wings. The magnetic component was resolved into (i) a component attributed to hyperfine interactions at Fe<sup>3+</sup> ions located in octahedral sites (B<sub>hf</sub>); and (ii) to Fe<sup>3+</sup> ions in implantation induced lattice defects, which were characterized by a distribution of the magnetic field B<sub>Distr</sub>. The hyperfine magnetic field at the Fe probes in the octahedral site has a room temperature value of B<sub>hf</sub> = 44.5(9) T. At higher sample temperatures, the B<sub>hf</sub> becomes much weaker, with the Fe<sup>3+</sup> hyperfine magnetic contribution disappearing above 700 K. Simultaneous analysis of the Ba–BFO eMS spectra shows that the variation of the hyperfine field with temperature follows the Brillouin curve for <em>S</em> = 5/2.</p>
Magnetic-field-free
<p>A</p>
Data underlying: High-Field Optical Cesium Magnetometer for Magnetic Resonance Imaging
<p>This is the data used in the work "High-Field Optical Cesium Magnetometer for Magnetic Resonance Imaging" by Hans Stærkind, Kasper Jensen, Vincent O. Boer, Esben Thade Petersen and Eugene S. Polzik.</p> <p>Scripts for calculations done in the article are also included.</p>
Data-based modeling of the magnetosheath magnetic field
<p>The zip-archive 2023JA031665.zip contains two data files used in the generation and validation of the magnetosheath magnetic field model, a corresponding format description file, and a file with a fortran subroutine that can be used to reconstruct the magnetosheath magnetic field, as presented in the JGRA article 2023JA031665 by N. A. Tsyganenko, V. S. Semenov, and N. V. Erkaev "<strong><em>Data-based modeling of the magnetosheath magnetic field </em></strong>".</p> <p>Below is a list of files with a brief explanation of their content and purpose.</p> <p>1. The ascii files <strong>Grand_training_set.dat</strong> and <strong>Grand_validation_set.dat</strong> contain data used in the generation of the magnetosheath magnetic field model and its validation, respectively. Data formats are provided in a separate text file <strong>Data_format.txt</strong>.</p> <p>2. The file <strong>MS_field_model.for</strong> contains a fortran subroutine for calculating the model magnetosheath magnetic field components.</p>
The Next Leap in Cardiac Magnetic Resonance Imaging:Cycling the Field
ClinicalTrials.gov study NCT04458883. IPD Sharing: NO. Countries: 1. Publications: 6.
Examination of Implant´s Safety in an Electronic and Magnetic Field Environment
ClinicalTrials.gov study NCT01626261. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Very Low Frequency Magnetic Fields in the Treatment of Fibromyalgia
ClinicalTrials.gov study NCT02231541. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Effects of Transcranial Static Magnetic Field Stimulation (tSMS) in Progressive Multiple Sclerosis
ClinicalTrials.gov study NCT05811013. IPD Sharing: Not stated. Countries: 1. Publications: 25.
Pediatric Transcranial Static Magnetic Field Stimulation to Improve Motor Learning
ClinicalTrials.gov study NCT03949712. IPD Sharing: Not stated. Countries: 1. Publications: 2.
Short and Long Term Exposure to Unique, Time-Varying Pulsed Electro-Magnetic Fields in Refractory Carpal Tunnel Syndrome
ClinicalTrials.gov study NCT00277563. IPD Sharing: Not stated. Countries: 1. Publications: 1.
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International Brain Laboratory public data
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OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.