Results 11 to 20 of about 7,319 (268)

Complexity of magnetization and magnetic simplification

open access: yesPhysical Review D, 2023
We use the complexity=volume (CV) prescription to study the effect of a magnetic field on the computational complexity for states in the gauge theories dual to two different gravitational models. In one of these theories the complexity increases with the intensity of the magnetic field, while in the other a more interesting behavior is discovered ...
Daniel Ávila   +2 more
openaire   +2 more sources

Impulse Magnetized Magnetic Screws [PDF]

open access: yesIEEE Transactions on Magnetics, 2019
This paper is an investigation in the performance of two types of magnetic screws (MSs). The first is the magnet to magnet and consists of permanent magnet (PM) nut and PM screw and the second is a magnet to reluctance and consists of PM nut and a double-start reluctance screw.
Mohamed, H.M., Atallah, K.
openaire   +2 more sources

A case of ingested multiple magnetic beads: the importance of suspicion based on medical history [PDF]

open access: yesPediatric Emergency Medicine Journal, 2020
We report a 33-month-old boy who presented to the emergency department with mild periumbilical abdominal pain lasting for 3 days. A plain abdominal radiograph showed 7 magnetic beads, which were located possibly in the small intestine without a free air.
Kwang Yeon Kim
doaj   +1 more source

On the Effects of Lamination Artificial Faults in a 15 kVA Three-Phase Transformer Core

open access: yesIEEE Access, 2022
Cutting and punching of the steel used in power transformer core may cause edge burrs. This, along with the degradation of the lamination insulation, can lead to interlaminar short circuits.
Ehsan Altayef   +3 more
doaj   +1 more source

Characterization of Permanent Magnet Magnetization [PDF]

open access: yesIEEE Transactions on Magnetics, 2017
The performances of electrical machines highly depend on the behavior of materials, such as steel, copper, and permanent magnet. This paper focuses on permanent magnets whose magnetization must be precisely known. Thus a non-destructive approach which includes a combination of experiments and inverse problem, using the magnetostatic moment method, is ...
Laure Arbenz   +4 more
openaire   +2 more sources

Magnetocaloric properties of metallic nanostructures

open access: yesCogent Engineering, 2015
A compilation of magnetocaloric properties of metallic nanostructures with Curie temperature (TC) between 260 and 340 K has been tabulated. The tabulated data show that nanostructure plays an important role in enhancing the magnetocaloric properties of a
Khurram S. Khattak   +5 more
doaj   +1 more source

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

open access: yes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

A Two-Axis Goniometric Sensor for Tracking Finger Motion

open access: yesSensors, 2017
The study of finger kinematics has developed into an important research area. Various hand tracking systems are currently available; however, they all have limited functionality.
Lefan Wang   +2 more
doaj   +1 more source

MOCHIO: a novel Multi-Objective Coronavirus Herd Immunity Optimization algorithm for solving brushless direct current wheel motor design optimization problem

open access: yesAutomatika, 2022
A prominent and realistic problem in magnetics is the optimal design of a brushless direct current (BLDC) motor. A key challenge is designing a BLDC motor to function efficiently with a minimum cost of materials to achieve maximum efficiency. Recently, a 
C. Kumar, D. Magdalin Mary, T. Gunasekar
doaj   +1 more source

Integration of Hyperspectral and Magnetic Data for Geological Characterization of the Niaqornarssuit Ultramafic Complex in West-Greenland

open access: yesRemote Sensing, 2022
The integration of imaging spectroscopy and aeromagnetics provides a cost-effective and promising way to extend the initial analysis of a mineral deposit.
Agnieszka Kuras   +7 more
doaj   +1 more source

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