Results 11 to 20 of about 501 (174)

In Vivo Imaging With a Low-Cost MRI Scanner and Cloud Data Processing in Low-Resource Settings. [PDF]

NMR Biomed
This study presented the system evolution at MUST: (a) Scanner after the initial assembly in 2023. (b) First reconstructed image (bell pepper). Front (c), rear (d), and global (e) views of the MUST scanner in the 2025 configuration, highlighting the improved electronics setup, RF coils, and mechanical integration.
Guallart-Naval T, Asiimwe R, Tusiime P, Nassejje MA, Kinyera L, Robin L, Nayebare M, Santos LGC, Fernández-García M, Swistunow L, Algarín JM, Stairs J, Hansen M, Amodoi R, Webb A, Harper J, Schiff SJ, Obungoloch J, Alonso J.   +18 more
europepmc   +2 more sources

Analysis of Electromagnetic Characteristics of a Novel Toroidal Acceleration Linear Motor

CES Transactions on Electrical Machines and Systems, 2022
A high thrust density linear motor, which adopts a novel toroidal structure, applying to load acceleration in confined space is proposed. The basic structure of the toroidal acceleration permanent magnet synchronous linear motor (TA-PMLSM) is depicted ...
Zhentian Liu, Qiaopeng Zhou, Weichao Li   +2 more
doaj   +1 more source

Radial TRASE: 2D RF encoding through mechanical rotation and active digital decoupling. [PDF]

Magn Reson Med
Abstract Purpose Two‐dimensional (2D) transmit array spatial encoding (TRASE) previously required four radiofrequency fields; however, interactions between transmit (Tx) array elements caused significant challenges for 2D imaging. Here, we present a low‐cost, 2D radial encoding scheme (Radial TRASE) using a simplified two‐coil array.
Sedlock CJ, Purchase AR, Tomanek B, Sharp JC.   +3 more
europepmc   +2 more sources

A Coaxial Magnetic Gear With Halbach Permanent-Magnet Arrays [PDF]

IEEE Transactions on Energy Conversion, 2010
This paper proposes a coaxial magnetic gear that offers higher torque density, lower cogging torque, and lower iron losses than its counterparts. The key is to newly employ a Halbach permanent-magnet (PM) array to constitute the PM poles in the inner rotor and a partial Halbach array (two segments per pole) for the outer rotor.
Jian, L, Chau, KT
openaire   +3 more sources

Magnetic field analysis of Primary Permanent Magnet Linear Motor Based on Halbach Distribution [PDF]

E3S Web of Conferences, 2020
The rail transit system driven by linear motor has outstanding advantages in climbing ability, traction performance, vibration and noise. However, with the increase of traffic travel and other situations, how to ensure that the linear motor still has a ...
Wang Xiuping, Li Yan, Yang Chuhan, Qu Chunyu   +3 more
doaj   +1 more source

Original optimization Procedures of Halbach Permanent Magnet Segmented Array [PDF]

2019 19th International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering (ISEF), 2019
This paper presents a direct design and optimization procedures of an arbitrary PM Halbach Segmented Array. The direct design is based on the ideal PM Halbach definition. The arc width, magnitude and orientation of polarization of each segment are taken as optimization variables after calculation of PM thickness.
Touhami, Sarah, Lefevre, Yvan, Llibre, Jean-Francois   +2 more
openaire   +2 more sources

Open-Source Multinuclear Low-Field Preclinical MRI Scanner. [PDF]

NMR Biomed
A step‐by‐step guideline for the construction of an open‐source multinuclear low‐field MRI scanner for preclinical studies is presented together with the first images acquired with the device. The scanner can detect 1H, 23Na, hyperpolarized 13C, and 15N signals at 66 mT. ABSTRACT Low‐field MRI (B0 ≤ 0.2 T) is emerging as a technology with the potential
Rodriguez GG, Korchak S, von Petersdorff-Campen C, Sucre O, Felger J, Mei R, Glöggler S.   +6 more
europepmc   +2 more sources

Design of energy harvester for self-checking roller in belt conveyor

Gong-kuang zidonghua, 2021
The belt conveyor self-checking roller installs wireless sensor nodes inside the roller to collect and wirelessly transmit temperature and vibration signals, which provides a new idea for the health checking of coal mine belt conveyor rollers.
SUN Liang, ZHOU Gongbo, WANG Wei, HE Zhenzhi, LI Tingting   +4 more
doaj   +1 more source

The permanent magnet hypothesis: an intuitive approach to designing non-circular magnet arrays with high field homogeneity

Scientific Reports, 2023
Does the Halbach magnetization rotation rule that is used for designing circular magnet arrays for achieving the best homogeneity hold also for an elliptical or other non-circular cross-section?
Sumit Tewari, Andrew Webb
doaj   +1 more source

Halbach permanent magnet array characterization [PDF]

AIP Advances
The Halbach permanent magnet array (HPMA) is a convenient and cost-effective way to generate strong magnetic fields in low-field magnetic resonance imaging (MRI).
Jiaxin Du, Thomas Edwards, Ruben Pellicer-Guridi, Viktor Vegh, Miguel Fuentes, Jeff Turner, Harriet Krek, David C. Reutens   +7 more
doaj   +1 more source