Results 11 to 20 of about 3,048 (180)

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

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

Torque in nested Halbach cylinders [PDF]

IEEE Transactions on Magnetics, 1999
Permanent magnet variable flux sources are produced by rotating two nested N-segment, permanent magnet, Halbach cylinders. Torque is primarily an end effect, determined by field nonuniformities due to the finite length and segmented structure of the cylinders. Due to symmetry, one cylinder experiences zero torque in a uniform applied field.
Ni Mhiochain, T.R, WEAIRE, DENIS LAWRENCE, MCMURRY, SARA, COEY, JOHN MICHAEL DAVID   +3 more
openaire   +4 more sources

An adjustable linear Halbach array [PDF]

Journal of Magnetism and Magnetic Materials, 2012
Abstract The linear Halbach array is a well-known planar magnetic structure capable, in the idealized case, of generating a one-sided magnetic field. We show that such a field can be created from an array of uniformly magnetized rods, and rotating these rods in an alternating fashion can smoothly transfer the resultant magnetic field through the ...
J.E. Hilton, S.M. McMurry
openaire   +3 more sources

Optimization Design for Ocean Wave Energy Convertor [PDF]

E3S Web of Conferences, 2020
Establishing a theoretical model for Ocean Wave Energy Convertor in advance is a necessary step during studying the energy harvesting of ocean wave which can save the engineering cost and improve research efficiency.
Liu Na, Tan Yimin, Mo Weiqiang, Han Huanqing, Li Lin   +4 more
doaj   +1 more source

Performance of halbach magnetized brushless ac motors [PDF]

IEEE Transactions on Magnetics, 2003
In this paper, an anisotropic bonded NdFeB Halbach magnetised ring magnet, which is oriented in powder alignment system during injection moulding and subsequently impulse magnetised, is employed. The features of such a Halbach magnetised machine, in terms of the airgap field distribution, and the back-emf and cogging torque waveforms, etc.
Zhu, Z.Q., Xia, Z.P., Shi, Y.F., Howe, D., Pride, A., Chen, X.J.   +5 more
openaire   +2 more sources

Time and cost associated with utilization of services at mobile health clinics among pregnant women

BMC Health Services Research, 2018
Background Antenatal care (ANC) is provided for free in Tanzania in all public health facilities. Yet surveys suggested that long distances to the facilities limit women from accessing these services.
Nyasule Neke, Antonius Reifferscheid, Barbara Buchberger, Jürgen Wasem   +3 more
doaj   +1 more source

Design and Research of a Dual Rotor Consequent-Pole Vernier Motor With Halbach Array

IEEE Access, 2022
Aiming at improving the torque density of the motor and the utilization rate of permanent magnets (PMs), a dual rotor consequent-pole vernier motor (DRCPVM) is proposed in this article.
Ying Xie, Shoucong He, Jiawei Shao, Bitian Ye, Fan Yang, Lijing Wang   +5 more
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

Proposal and Challenge of Halbach Array Type Induction Coil for Cooktop Applications

IEEE Open Journal of Industry Applications, 2021
This paper proposes a new induction heating (IH) coil using Halbach-arranged coils for cooktop. In general, a control inverter is placed on the back side of the coil, but by using the Halbach array coils, magnetic flux leakage to the back of the coil can
Masahiro Aoyama, Wolfgang Thimm, Markus Knoch, Lutz Ose   +3 more
doaj   +1 more source