Results 11 to 20 of about 98,126 (289)

Semiclassical tunneling and magnetic flux effects on the circle [PDF]

open access: yesJournal of Spectral Theory, 2017
This paper is devoted to semiclassical tunneling estimates induced on the circle by a double well electric potential in the case when a magnetic field is added. When the two electric wells are connected by two geodesics for the Agmon distance, we highlight an oscillating factor (related to the circulation of the magnetic field) in the splitting ...
Bonnaillie-Noël, Virginie   +2 more
openaire   +7 more sources

The Perfect Circle Technique Shows Poor Inter-rater Reliability in Measuring Anterior Glenoid Bone Loss on Magnetic Resonance Imaging [PDF]

open access: yesArthroscopy, Sports Medicine, and Rehabilitation
Purpose: To evaluate the reliability of the perfect circle methodology for measurement of glenoid bone loss in patients with anterior glenohumeral instability.
Nata Parnes, M.D.   +7 more
doaj   +4 more sources

Magnetic resonance imaging of flow dynamics in the circle of Willis. [PDF]

open access: yesStroke, 1990
Magnetic resonance angiography was applied to the study of blood flow dynamics in the circle of Willis in nine patients with cerebrovascular disease and two normal volunteers. In conjunction with two-dimensional or three-dimensional gradient-echo acquisitions, selective presaturation of individual vessels was used to determine the direction of blood ...
R R, Edelman   +5 more
openaire   +4 more sources

Topology‐aware anatomical segmentation of the Circle of Willis: HUNet unveils the vascular network [PDF]

open access: yesIET Image Processing
This research investigates the Circle of Willis, a critical vascular structure vital for cerebral blood supply. A modified novel dual‐pathway multi‐scale hierarchical upsampling network (HUNet) is presented, tailored explicitly for accurate segmentation ...
Md. Shakib Shahariar Junayed   +4 more
doaj   +2 more sources

Circle detection using electro-magnetism optimization [PDF]

open access: yesInformation Sciences, 2012
This paper describes a circle detection method based on Electromagnetism-Like Optimization (EMO). Circle detection has received considerable attention over the last years thanks to its relevance for many computer vision tasks. EMO is a heuristic method for solving complex optimization problems inspired in electromagnetism principles.
Erik Cuevas   +4 more
openaire   +2 more sources

Core Loss Analysis and Modeling of a Magnetic Coupling System in WPT for EVs

open access: yesWorld Electric Vehicle Journal, 2021
The magnetic core is an important part of the magnetic coupling system in wireless power transmission (WPT) for EVs. It helps to increase the coupling coefficient and reduce magnetic field leakage. However, it also brings additional core loss.
Qingbin Chen   +3 more
doaj   +1 more source

Non-resonant circles for strong magnetic fields on surfaces

open access: yesAnnales Henri Lebesgue, 2022
We study non-resonant circles for strong magnetic fields on a closed, connected, oriented surface and show how these can be used to prove the existence of trapping regions and of periodic magnetic geodesics with prescribed low speed. As a corollary, there exist infinitely many periodic magnetic geodesics for every low speed in the following cases: i ...
ASSELLE L., BENEDETTI G.
openaire   +3 more sources

A comprehensive study of magnetic resonance angiography of circle of Willis in population of Western Uttar Pradesh [PDF]

open access: yes, 2022
Background: Circulus Arteriosus cerebrii, another name for Circle of Willis, establishes a polygonal anastomotic channel between two internal carotid arteries and two vertebral arteries.
Pandey, V. D.   +5 more
core   +2 more sources

Circle-to-circle amplification to improve the sensitivity of a magnetic nanoparticle-based DNA detection protocol [PDF]

open access: yes, 2021
Magnetic nanoparticles have great potential in the biomedical and diagnostics field. Due to their small size, the particles have a high surface-to-volume ratio which enables for biofunctionalisation with different molecular probes.
Nilsson, Anna
core  

PG1258+593 and its common proper motion magnetic white dwarf counterpart [PDF]

open access: yes, 2010
We confirm SDSS J130033.48+590407.0 as a common proper motion companion to the well-studied hydrogen-atmosphere (DA) white dwarf PG1258+593 (GD322).
Koester, Detlev   +6 more
core   +1 more source

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