Results 11 to 20 of about 1,056,363 (297)

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

Permanent Magnet Hybrid Core Inductors for High Saturation Capability

open access: yesIEEE Open Journal of Power Electronics, 2023
Inductor designs with large dc current relative to ac ripple are often constrained by saturation, which limits their size, loss, and current-carrying capability.
Rachel S. Yang   +3 more
doaj   +1 more source

An optimized magnet for magnetic refrigeration [PDF]

open access: yesJournal of Magnetism and Magnetic Materials, 2010
A magnet designed for use in a magnetic refrigeration device is presented. The magnet is designed by applying two general schemes for improving a magnet design to a concentric Halbach cylinder magnet design and dimensioning and segmenting this design in an optimum way followed by the construction of the actual magnet.
Bjørk, Rasmus   +4 more
openaire   +4 more sources

Magnets ingestion as a rare cause of ileus in adults: A case report [PDF]

open access: yesVojnosanitetski Pregled, 2017
Introduction. Magnetic foreign bodies are harmless when ingested as a single object. However, if numerous of individual magnets are ingested at certain intervals, one after the other, they may attract each other through the bowel wall and cause severe ...
Doklestić Krstina   +3 more
doaj   +1 more source

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

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

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

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

The magnetism of permanent magnets [PDF]

open access: yesJournal of the Institution of Electrical Engineers, 1913
n ...
openaire   +2 more sources

Smart Magnetic Microrobots Learn to Swim with Deep Reinforcement Learning

open access: yesAdvanced Intelligent Systems, 2022
Swimming microrobots are increasingly developed with complex materials and dynamic shapes and are expected to operate in complex environments in which the system dynamics are difficult to model and positional control of the microrobot is not ...
Michael R. Behrens, Warren C. Ruder
doaj   +1 more source

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