Results 1 to 10 of about 619,724 (333)

Host age structure reshapes parasite symbiosis: collaboration begets pathogens, competition begets virulent mutualists

open access: yesBiology Direct, 2022
Background Symbiotic relationships are ubiquitous in the biosphere. Inter-species symbiosis is impacted by intra-specific distinctions, in particular, those defined by the age structure of a population.
Carsten O. S. Portner   +6 more
doaj   +1 more source

Effects of shrink fitting on iron losses of a permanent magnet synchronous motor with an amorphous core

open access: yesIET Electric Power Applications, 2022
In order to investigate the effects of shrink fitting on the amorphous core, a test device is designed and the magnetisation and specific iron loss characteristics of the amorphous core are measured.
Longfei Zhu   +3 more
doaj   +1 more source

Development of a rapid cooling atomizing method and production of high-Bs nanocrystalline powders containing large-sized particles

open access: yesAIP Advances, 2020
We attempted to produce nanocrystalline soft magnetic powders with a high saturation magnetic flux density (Bs) and containing large-sized particles using a modified water atomization system named “HPWA/YK.” Almost fully amorphous powders containing ...
K. Uji   +4 more
doaj   +1 more source

General Analytical Model of Magnet Average Eddy-Current Volume Losses for Comparison of Multi-phase PM Machines with Concentrated Winding [PDF]

open access: yes, 2014
this paper studies magnet eddy-current losses in permanent magnet (PM) machines with concentrated winding. First of all, space harmonics of magnetomotive force (MMF) and their influence on magnet losses in electrical machines are investigated.
ASLAN, Bassel   +2 more
core   +5 more sources

Loss Calculation and Thermal Analysis for High-Speed Permanent Magnet Synchronous Machines

open access: yesIEEE Access, 2020
The small size of high-speed permanent magnet synchronous machines (PMSMs) makes the increase of loss density and the difficulty of heat dissipation.
Chao Zhang   +3 more
doaj   +1 more source

Analytical Model of Magnet Eddy-Current Volume Losses in Multi-phase PM Machines with Concentrated Winding [PDF]

open access: yes, 2012
Thanks to IEEE. The original PDF of the article can be found at: http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=6342330&url=http%3A%2F%2Fieeexplore.ieee.org%2Fxpls%2Fabs_all.jsp%3Farnumber%3D6342330 MHYGALE, project managed by VALEO-EEMthis ...
ASLAN, Bassel   +2 more
core   +4 more sources

Publisher Correction: Prototype REBCO Z1 and Z2 shim coils for ultra high-field high-temperature superconducting NMR magnets

open access: yesScientific Reports, 2021
An amendment to this paper has been published and can be accessed via a link at the top of the paper.
Dongkeun Park   +4 more
doaj   +1 more source

Superconducting pipes and levitating magnets [PDF]

open access: yes, 2006
Motivated by a beautiful demonstration of the Faraday's and Lenz's law in which a small neodymium magnet falls slowly through a conducting non-ferromagnetic tube, we consider the dynamics of a magnet falling through a superconducting pipe.
Felipe B. Rizzato   +3 more
core   +2 more sources

Si effects on a thermal stability and a crystallization behavior of P-riched Fe(-Si)-B-P-Cu alloys

open access: yesAIP Advances, 2019
Nanocrystalline soft magnetic ribbons with high saturation magnetic flux density Bs and low coercivity Hc are attracted for high power devices. Ribbon-shaped samples with compositions of Fe83.3B16-xPxCu0.7 (x=4-10) were prepared. The activation energy of
T. Tomita, T. Takahashi, H. Kuwata
doaj   +1 more source

FINITE ELEMENT ANALYSIS OF A SINGLE-PHASE INDUCTION MOTOR WITH NON-UNIFORM STATOR SLOTS BASED ON MAGNET SOFTWARE AND AUTOCAD

open access: yesJournal of Engineering and Sustainable Development, 2022
The current study uses the finite element technique to investigate a single-phase induction motor with non-uniform stator slots. A 0.5 hp, four poles, 36 stator slots, and 48 rotor slots have non-uniform stator slots was analyzed based on magnet Finite ...
Marwa A. Dawood, Amer M. Ali
doaj   +1 more source

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