Results 71 to 80 of about 185,318 (292)

Morphological aspects of the quadriceps and their relationship with torque and power parameters in male soccer players at the beginning of the season

open access: yesApunts Sports Medicine
Background/Objective: The aim of this study was to evaluate the relationship between the morphological characteristics of the quadriceps and torque parameters and anaerobic fitness in soccer players at the beginning of the season.
Thaissa Gonzaga Blanco Pardo   +6 more
doaj   +1 more source

Thickness‐Dependent Skyrmion Evolution in Fe3GeTe2 During Magnetization Reversal

open access: yesAdvanced Functional Materials, EarlyView.
Thickness‐ and field‐dependent magnetic domain behavior in 2D van der Waals Fe3GeTe2 is studied using Lorentz TEM and micromagnetic simulations. A patch‐like domain phase evolves from skyrmions during magnetization reversal, and step edges between thickness regions act as pinning sites.
Jennifer Garland   +9 more
wiley   +1 more source

Analysis and Reduction of Cogging Torque of Permanent Magnet Synchronous Wind Generators Based on the Magnetic Field Modulation Mechanism

open access: yesCES Transactions on Electrical Machines and Systems
In this paper, a magnetic field modulation model considering the influence of phase angles is established for the analysis and weakening of the cogging torque of the permanent magnet synchronous wind generations.
Zexing Li   +4 more
doaj   +1 more source

Claw‐pole magnetic levitation torque motor for 2D valve with automatic neutral adjustment

open access: yesIET Electric Power Applications, 2023
In order to solve the problems of complex structure and the difficulty of neutral adjustment of the existing 2D valve electro‐mechanical converter, a kind of claw pole magnetic levitation torque motor (CPMLTM) was proposed, which automatically suspended ...
Jiahui Huang   +3 more
doaj   +1 more source

Vertical axis wind turbine drive train transient dynamics [PDF]

open access: yes, 1982
Start up of a vertical axis wind turbine causes transient torque oscillations in the drive train with peak torques which may be over two and one half times the rated torque of the turbine.
Carne, T. G., Clauss, D. B.
core   +1 more source

Recent developments in planet migration theory

open access: yes, 2012
Planetary migration is the process by which a forming planet undergoes a drift of its semi-major axis caused by the tidal interaction with its parent protoplanetary disc.
A. Crida   +109 more
core   +3 more sources

Electroactive Liquid Crystal Elastomers as Soft Actuators

open access: yesAdvanced Functional Materials, EarlyView.
Electroactive liquid crystal elastomers (eLCEs) can be actuated via electromechanical, electrochemical, or electrothermal effects. a) Electromechanical effects include Maxwell stress, electrostriction, and the electroclinic effect. b) Electrochemical effects arise from electrode redox reactions.
Yakui Deng, Min‐Hui Li
wiley   +1 more source

Study of the influence of deviations in both jacking force and cutterhead torque during shield tunnelling in soft ground

open access: yesScientific Reports
During shield tunnelling, vertical ground displacement is significantly influenced by deviations in both jacking force and cutterhead torque. This study investigates the effects of deviations in these parameters on ground displacement via numerical ...
Liang Peng   +6 more
doaj   +1 more source

Interface control of the magnetic chirality in CoFeB|MgO heterosctructures with heavy metal underlayers

open access: yes, 2014
Recent advances in the understanding of spin orbital effects in ultrathin magnetic heterostructures have opened new paradigms to control magnetic moments electrically.
Hayashi, Masamitsu   +6 more
core   +1 more source

Melt Grafting of Geometry‐Tailored Voltage Stabilizers for High‐Performance Polypropylene Insulation

open access: yesAdvanced Functional Materials, EarlyView.
A scalable one‐step melt grafting strategy is developed to enhance the dielectric properties of isotactic polypropylene by covalently incorporating thermally stable aromatic voltage stabilizers. This solvent‐free approach improves volume resistivity and DC breakdown strength through deep trap formation and charge localization, offering a sustainable ...
Nazirul Mubin bin Normansah   +9 more
wiley   +1 more source

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