Results 71 to 80 of about 984 (220)

Establishment and Analysis of Radiation Interference Prediction Model for Permanent Magnet Servo Drive System

open access: yesIET Power Electronics, Volume 19, Issue 1, January/December 2026.
This paper proposes a modelling method based on multi‐software co‐simulation to precisely model radiated interference in permanent magnet servo drive systems. The accuracy of the simulation model is validated through comparison with actual measurement results. ABSTRACT High‐frequency switching operations of power switching tubes generate high‐frequency
Jingxuan He   +7 more
wiley   +1 more source

Excitation System Technologies for Wound-Field Synchronous Machines: Survey of Solutions and Evolving Trends

open access: yesIEEE Access, 2019
WFSM are included in the majority of large power generating units and special high-power motor drives, due to their high efficiency, flexible field excitation and intrinsic flux weakening capability.
Jonas Kristiansen Noland   +3 more
doaj   +1 more source

Thermographic‐Infrared Changes During Surgical Osteotomy Influenced by the Motor Type, System, and Diameter

open access: yesInternational Journal of Dentistry, Volume 2026, Issue 1, 2026.
Background Thermographic‐infrared changes during osteotomy surgery depend on the type of motor used, size, and system of the dental implant. This study undertakes the evaluation of these thermal variations for successful optimization of dependent surgical procedures while aiming toward reduced thermal damage to the bone tissue.
Daniel Alvitez-Temoche   +7 more
wiley   +1 more source

Reversible thyristor converters of brushless synchronous compensators

open access: yesElectrical engineering & Electromechanics, 2013
Behavior of models of three-phase-to-single-phase rotary reversible thyristor converters of brushless synchronous compensators in a circuit simulation system is analyzed.
А.М.Galynovskiy   +2 more
doaj  

Maximizing Scientific Exploitation of Raman Spectroscopy With A.C.M.E. (Atmospheric Chamber for Measurements in Environment)

open access: yesJournal of Raman Spectroscopy, Volume 56, Issue 11, Page 1394-1403, November 2025.
Simulated planetary gas detection using the A.C.M.E. chamber and a novel hollow‐core fiber Raman sensor. Controlled atmospheric mixtures were used to evaluate the sensor’s performance, demonstrating its capability to detect gases such as CO₂, O₂, and N₂. The results support the applicability of the HCF‐based Raman sensor in future planetary exploration
I. Reyes‐Rodríguez   +13 more
wiley   +1 more source

Nanometer Resolution Structure‐Emission Correlation of Individual Quantum Emitters via Enhanced Cathodoluminescence in Twisted Hexagonal Boron Nitride

open access: yesAdvanced Materials, Volume 37, Issue 41, October 16, 2025.
Nanometer‐resolution mapping of individual quantum emitters in hexagonal boron nitride is achieved, allowing us to identify the 440 nm blue emitter as a substituted vertical carbon dimer. Leveraging this atomic‐level insight, the deterministic creation of isolated single 440 nm blue emitters is demonstrated through localized electron beam irradiation ...
Hanyu Hou   +10 more
wiley   +1 more source

Novel Winding Design and Analysis of Brushless Wound Rotor Synchronous Machines

open access: yesIET Electric Power Applications
Synchronous machines are electric machines characterised by a rotating speed proportional to the AC supply and are independent of load. Traditional permanent magnet synchronous machines utilise rare earth minerals for rotor flux generation, posing ...
Ahsan Fayyaz   +3 more
doaj   +1 more source

3-D Finite Element Investigation of Flux Regulation Performance of a Novel Hybrid Excitation Brushless Claw-Pole Alternator

open access: yesMATEC Web of Conferences, 2015
In consideration of low power density of electric excitation claw-pole synchronous alternator (EECA) and some difficulties in magnetic field regulation of permanent magnet claw-pole synchronous alternator (PMCA), a novel hybrid excitation brushless claw ...
Qiao Dongwei   +3 more
doaj   +1 more source

Suppression of Stacking Faults for Stable Formamidinium‐Rich Perovskite Absorbers

open access: yesAdvanced Materials, Volume 37, Issue 26, July 3, 2025.
The authors show that the (011)C perovskite planes are prone to stacking faults formation in all leading formamidinium‐rich perovskite compositions. Using ethylene thiourea as a precursor additive, Othman et al. suppress those vulnerable facets, significantly enhancing the absorber's intrinsic stability under various operational conditions.
Mostafa Othman   +31 more
wiley   +1 more source

Safety boots

open access: yes, 2020
Nowadays, safety boots are necessary and essential to workers in order to avoid harm and injury at a workplace. Safety boots can be defined as a personal protective equipment (PPE) for foot protection at workplace from getting foot injuries caused by ...
Abubakar, Muhammad Umarazizi   +2 more
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