Results 11 to 20 of about 3,140 (217)

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

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

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

Inverted Linear Halbach Array for Separation of Magnetic Nanoparticles [PDF]

IEEE Transactions on Magnetics, 2013
A linear array of Nd-Fe-B magnets has been designed and constructed in an inverted Halbach configuration for use in separating magnetic nanoparticles. The array provides a large region of relatively low magnetic field, yet high magnetic field gradient in agreement with finite element modeling calculations.
Y, Ijiri, C, Poudel, P S, Williams, L R, Moore, T, Orita, M, Zborowski   +5 more
openaire   +2 more sources

Active shim coils design for Halbach magnet based on inverse boundary element method

Magnetic Resonance Letters, 2022
With advantages of small volume, high field strength, and compact stray field, the Halbach array magnet is of great potential in desktop NMR applications. However, field inhomogeneity poses a main obstacle to its applications.
Yajie Xu, Feng Wang, Ya Wang, Peng Yu, Jingzhong Zhang, Xiaodong Yang   +5 more
doaj   +1 more source

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

Design Optimization and Comparison of Cylindrical Electromagnetic Vibration Energy Harvesters

Sensors, 2021
Investigating the coil–magnet structure plays a significant role in the design process of the electromagnetic energy harvester due to the effect on the harvester’s performance.
Tra Nguyen Phan, Jesus Javier Aranda, Bengt Oelmann, Sebastian Bader   +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

Research on the orientation structure of permanent ferrite multi-polar magnet ring

上海师范大学学报. 自然科学版, 2019
The Halbach array structure was innovatively applied to the orientation structure of the injection mold of the anisotropic ferrite multi-polar magnet ring for the contrastive study of the ordinary radial oriented structure and Halbach array oriented ...
CHEN Wei, WANG Yunxiang, LI Gang
doaj   +1 more source

BACH ARRAY LINEAR GENERATOR FOR WAVE ENERGY CONVERTERS [PDF]

Journal of Engineering Research - Egypt, 2015
linear generators have been proposed as a proper power takeoff system for direct-drive wave energy conversion. Coupled directly to a reciprocating wave energy device, it was declared that linear generators could be a valuable replacement for hydraulic ...
Ahmed ElGebaly, Mohamed El-Nemr
doaj   +1 more source