Results 81 to 90 of about 16,788,383 (287)

Frequency Range of UHF PD Measurements in Power Transformers

, 2023
Although partial discharge (PD) measurement is a well-accepted technology to assess the quality of the insulation system of power transformers, there are still uncertainties about which frequency range PDs radiate and which frequency range should be ...
de Castro, Bruno Albuquerque [UNESP], Tenbohlen, Stefan, Falk Werner, Stefan Tenbohlen, Werner, Falk, Beltle, Michael, Siegel, Martin, Judd, Martin, Martin Siegel, Sánchez, Ricardo Albarracín, Sikorski, Wojciech, Chandra Beura, Pascal Fehlmann, Fehlmann, Pascal, Michael Beltle, Beura, Chandra Prakash, Martin Judd, Wojciech Sikorski, Ricardo Albarracín Sánchez, Bruno de Castro   +19 more
core   +1 more source

Artificial molecular machines and motors—Design and control of nanoscale motion

FEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

A measurements-based discharge location algorithm for plain disc winding power transformers [PDF]

, 2005
A measurements-based electrical method for locating partial discharges (PD) in transformers is described in the paper. This location method relies on the series resonance frequencies of the signals produced at the transformer terminals by a discharge on ...
Wang, Zhongdong D., Crossley, P.A., Crossley, Peter A., Hettiwatte, Sujeewa N., Hettiwatte, S.N., Wang, Z.D.   +5 more
core   +1 more source

Analytical Model of a High-Frequency Rotary Transformer

IEEE Access
The permanent magnet synchronous motors are widely used for the propulsion of electric vehicles. These motors have good performance, but result expensive because the permanent magnets installed on their rotor contain rare earths. A promising solution to reduce the cost of the motors is to replace the magnets with an excitation coil, which requires to ...
Manuele Bertoluzzo, Nicola Bianchi, Francesco Tripaldi   +2 more
openaire   +4 more sources

A context‐dependent modulatory role for eIF6 in acquired resistance to vemurafenib in melanoma

FEBS Letters, EarlyView.
Acquired resistance to vemurafenib upregulates the translation factor eIF6 in melanoma cells. Silencing eIF6 in resistant cells reduces proliferation and partially restores drug sensitivity, whereas its overexpression increases sensitivity across melanoma lines regardless of BRAF status, via modulation of mTOR, S6K, and MAPK signaling.
George Kyriakopoulos, Antonia Petropoulou, Alexandra Anastogianni, Angelina Bania, Vassilis Stamatakis, Argyris Alexiou, Chi‐Ping Day, Glenn Merlino, Katerina Grafanaki, Constantinos Stathopoulos   +9 more
wiley   +1 more source

The ubiquitin system in normal and infected germinal center B cells

FEBS Letters, EarlyView.
The ubiquitin system plays a central role in germinal center (GC) B cells, influencing differentiation to long‐lived memory B cells. Oncogenic gammaherpesviruses gain access to memory B cells by establishing latency in GC B cells. Mapping ubiquitin mechanisms in normal and infected GC B cells will define specific molecular circuits in B cells germane ...
Destiny Davis, Lesly Mejia, Emily K Moser   +2 more
wiley   +1 more source

Research on High-Frequency Isolated NPC Three-Level Inverter for Frequency Conversion and Speed Regulation

Applied Sciences
Mining frequency converters are the primary means for achieving variable frequency speed regulation of electromechanical equipment in coal mines, offering energy-saving benefits for coal mining enterprises.
Yiying Wang, Longyu Gao, Lifen Ma, Yang Liu, Yanhui Wu, Jikun Dai   +5 more
doaj   +1 more source

Influences of Traction Load Shock on Artificial Partial Discharge Faults within Traction Transformer—Experimental Test for Pattern Recognition

Energies, 2017
Partial discharge (PD) measurement and its pattern recognition are vital to fault diagnosis of transformers, especially to those traction substation transformers undergoing repetitive traction load shocks.
Shuaibing Li, Guoqiang Gao, Guangcai Hu, Bo Gao, Haojie Yin, Wenfu Wei, Guangning Wu   +6 more
doaj   +1 more source

High Frequency Transformer Modelling

, 2016
The aim of this poster is to describe the “Grey box" transformer model based on the basic geometry of the transformer which is suitable for calculation of transmitted overvoltages through the transformer in the time domain.
Jurišić, Bruno, Xemard, Alain, Uglešić, Ivo, Paladian, Francoise   +3 more
openaire   +2 more sources

Metastatic niche shaped by host factors influences disseminated cancer cell fate

FEBS Letters, EarlyView.
Metastasis is shaped not only by cancer cells but also by the environments they encounter. This review explores how factors such as aging, diet, the microbiome, lifestyle, and environmental exposures remodel organ‐specific niches in the lung, liver, bone, and brain, influencing where metastatic cells survive, remain dormant, or grow, and ultimately ...
Gwennan Delyth Ward, Álvaro Ruiz‐Tabas, Patricia Altea‐Manzano   +2 more
wiley   +1 more source