Results 41 to 50 of about 194,391 (210)

Two-Point Positioning Method with Magnetic Gradient Tensor Invariant Constraints

open access: yes水下无人系统学报, 2023
Single-point magnetic gradient tensor positioning methods are greatly affected by geomagnetic field estimation errors, and multi-point magnetic gradient tensor positioning methods are easy to get trapped in local optima.
Cheng CHI   +5 more
doaj   +1 more source

Submillimeter magnetic particle imaging with low symmetrical field gradient

open access: yes, 2020
Magnetic particle imaging (MPI) requires high field gradient to acquire sharp point spread function used to refine spatial resolution for submillimeter imaging of cells and small animal models. Since the steep field gradient potentially causes difficulty
Trisnanto, Suko Bagus, Takemura, Yasushi
core   +1 more source

Effect of the Internal Magnetic Field Gradient on Two Dimensional NMR Responses in Volcanic Rock

open access: yesCejing jishu
Two dimensional (2D) nuclear magnetic resonance (NMR) technology can provide two kinds of relaxation information simultaneously, which has significant advantages in fluid identification and quantitative evaluation. There are rich paramagnetic minerals in
CUI Shitao   +6 more
doaj   +1 more source

The influence of longitudinal magnetic-field gradient on the transverse relaxation rate of cesium atoms

open access: yesAIP Advances, 2017
Reducing the transverse relaxation rate of alkali atoms is crucial to improve the sensitivity of the magnetometers. In a perturbative treatment of the effects of the magnetic-field gradients, the transverse relaxation rates of alkali atoms are predicted ...
Y. Y. Fu, J. Yuan
doaj   +1 more source

A Robust Tracking Method for Multiple Moving Targets Based on Equivalent Magnetic Force

open access: yesMicromachines, 2022
A ferromagnetic vehicle, such as a submarine, magnetized by the Earth’s magnetic field produces a magnetic anomaly field, and the tracking of moving targets can be realized through real-time analysis of magnetic data.
Ying Wang, Qiang Fu, Yangyi Sui
doaj   +1 more source

Tracing of magnetic fields with gradients: subsonic turbulence

open access: yesMonthly Notices of the Royal Astronomical Society, 2023
ABSTRACT The recent development of the velocity gradient technique shows the capability of the technique for tracing magnetic field morphology in diffuse interstellar gas and molecular clouds. In this paper, we perform a systematic numerical study of the performance of the velocity and synchrotron gradient for a wide range of ...
Ho, Ka Wai, Lazarian, Alex
openaire   +2 more sources

Stress‒magnetization of the state of flange damage to a bridge steel box beam based on magnetic memory detection

open access: yes工程科学学报, 2022
Metal magnetic memory detection technology has been widely studied because it can identify damage to ferromagnetic components quickly and conveniently, and it is considered to have the ability to identify hidden damage.
San-qing SU   +5 more
doaj   +1 more source

Capture of Submicron Particles in Magnetized Granular Filled Beds [PDF]

open access: yesGazi Üniversitesi Fen Bilimleri Dergisi, 2020
The diffusion separation of micron and submicron sized particles was examined theoretically in the gradient magnetic field formed by tangent ferromagnetic spheres magnetized in external homogeneous magnetic field. In the gradient field around the tangent
Teoman KARADAĞ
doaj   +1 more source

MOEMS Based Single Chip Lorentz Force Magnetic Gradiometer

open access: yesProceedings, 2018
The functional principle of an optical gradient magnetic field sensor consisting of two independent laterally oscillating masses on a single chip is reported.
Matthias Kahr   +7 more
doaj   +1 more source

Magnetic field gradient effects on the magnetorotational instability [PDF]

open access: yesAstronomische Nachrichten, 2017
Magnetorotational instability (MRI), also known as the Balbus–Hawley instability, is thought to have an important role on the initiation of turbulence and angular momentum transport in accretion disks. In this work, we investigate the effect of the magnetic field gradient in the azimuthal direction on MRI.
openaire   +3 more sources

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