Results 61 to 70 of about 6,999 (231)

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

International 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, Franco Mauricio, Berly Delgado-Cumpa, Julia Medina, Fran Espinoza-Carhuancho, Ivan Calderon, Frank Mayta-Tovalino, Hannah Wesley   +7 more
wiley   +1 more source

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

IEEE 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, Stefano Nuzzo, Alberto Tessarolo, Erick Fernando Alves   +3 more
doaj   +1 more source

Reversible thyristor converters of brushless synchronous compensators

Electrical 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 , E.М.Dubchak , E.А.Lenskaya   +2 more
doaj  

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

Journal 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, S. Julve‐Gonzalez, M. Veneranda, J. A. Manrique, A. Sanz‐Arranz, M. Mayoral‐Yagüe, S. Jiménez‐Blázquez, L. Asenjo‐Estévez, E. Charro‐Huerga, J. Delgado‐Iglesias, E. A. Lalla, B. Barrios‐Areinamo, F. Rull, G. Lopez‐Reyes   +13 more
wiley   +1 more source

On the variation with flux and frequency of the core loss coefficients in electrical machines [PDF]

, 2006
A model of core losses, in which the hysteresis coefficients are variable with the frequency and induction (flux density) and the eddy-current and excess loss coefficients are variable only with the induction, is proposed. A procedure for identifying the
Dellinger, S.J., Heideman, R.J., Ionel, D.M., McGilp, M.I., Miller, T.J.E., Popescu, M.   +5 more
core   +1 more source

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

Advanced 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, Muchuan Hua, Venkata Surya Chaitanya Kolluru, Wei‐Ying Chen, Kaijun Yin, Pinak Tripathi, Maria K.Y. Chan, Benjamin T. Diroll, Thomas E. Gage, Jian‐Min Zuo, Jianguo Wen   +10 more
wiley   +1 more source

A New Excitation Control Device for Brushless Alternator of Electrical Wheels Autonomous Dump Truck

Kongzhi Yu Xinxi Jishu, 2013
It designed a new excitation control device for brushless alternator of electrical wheels autonomous dump truck. In order to control excitation current effectively, it used DSP as its control unit and function modules with serial and CAN communication to
FENG Bing, YANG Dongxin, LIU Songbai
doaj  

Comparison of fault-tolerant operations for permanent-magnet hybrid brushless motor drive [PDF]

, 2010
Paper No. CS-06The permanent-magnet hybrid brushless (PMHB) motor adopts both DC field windings and PMs for excitation. It not only offers effective online flux control, but also flexible brushless DC (BLDC) or brushless AC (BLAC) operations.
Chau, KT, Li, W, Liu, C
core   +1 more source

Suppression of Stacking Faults for Stable Formamidinium‐Rich Perovskite Absorbers

Advanced 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, Lorenzo Agosta, Quentin Jeangros, Anaël Jaffrès, Sandra Jenatsch, Virginia Carnevali, Nikolaos Lempesis, Vladislav Slama, Julian A. Steele, Rui Zhang, Eduardo Solano, Guiseppe Portale, Victor Boureau, Adriana Paracchino, Aurélien Bornet, Huagui Lai, Fan Fu, Amit Kumar Sachan, Wolfgang Tress, Kerem Artuk, Mounir D. Mensi, Mohammad Reza Golobostanfard, Austin G. Kuba, Stefan Zeiske, Ardalan Armin, Nicolas Blondiaux, Lisa Champault, Ursula Röthlisberger, Beat Ruhstaller, Christophe Ballif, Aïcha Hessler‐Wyser, Christian M. Wolff   +31 more
wiley   +1 more source

Novel Winding Design and Analysis of Brushless Wound Rotor Synchronous Machines

IET 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, Faizan Mehmood, Ch. Muhammad Arbab Waheed, Zahid Ullah   +3 more
doaj   +1 more source