Results 41 to 50 of about 152,057 (309)

Design Guidelines for High-Power and High-Frequency Transformers

2019 IEEE Applied Power Electronics Conference and Exposition (APEC), 2019
In power electronics, the tendency to increase power and frequency (in the range of several MHz) has become an actual concern and leads to challenging design of the magnetic components. The traditional design methods need to be adapted to this demand, since high frequency effects in the core behavior need to be considered, and parasitic elements play a
Salinas López, Guillermo, Giménez Bravo, Álvaro, Oliver Ramírez, Jesús Angel, Prieto López, Roberto   +3 more
openaire   +2 more sources

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

CORRECTION OF THE HIGH-FREQUENCY TRANSFORMER ASYMMETRY OF UNDISTURBED POWER SUPPLY OF LIMITED POWER [PDF]

, 2018
Study the possibilities to adjust asymmetry of the high frequency transformer as a component of an undisturbed power supply ...
BORODAI, Valery, KOVALEV, Alexander, SUPRUN, Eugene, Бородай, В. А., Бородай, Валерий Анатольевич, Бородай, Валерій Анатолійович, Ковалев, А. Р., Ковалев, Александр Робертович, Ковальов, О. Р., Ковальов, Олександр Робертович, Супрун, Е. О., Супрун, Евгений Олегович, Супрун, Є. О., Супрун, Євген Олегович   +13 more
core  

The measurement of very low conductivity and dielectric loss in XLPE cables: A possible method to detect degradation due to thermal aging [PDF]

, 2011
The dielectric response of crosslinked polyethylene (XLPE) insulated, miniature power cables, extruded with inner and outer semicons, was measured over the frequency range 10-4 to 104 Hz at temperatures from 20 to 100 °C.
Dissado, L. A., Dodd, S. J., Fothergill, J., Liu, T., Nilsson, U. H.   +4 more
core   +1 more source

The simulation of a new high frequency transformer

Journal of Energy Systems, 2022
Core losses of transformers motivate many engineers and scientists to design and implement different transformers for their specific aims. Since there exists a growing interest on high frequency applications in today’s world, design and optimization studies of a magnetic fluid core transformer (MFCT), having an easy and cheap production approach in ...
Sude HATEM, Erol KURT
openaire   +4 more sources

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

FEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi, Pilar Samperio Ventayol, Natalie Burkard, Nicolas Schlegel, Carmen Aguilar, Sina Bartfeld   +5 more
wiley   +1 more source

A Study on the Enhanced Extraction of Ultra-High-Frequency Signals Induced by Transformer Core Coupling

Energies
Partial discharge, as an important indicator of insulation degradation in transformers, is a crucial means of assessing the insulation performance of transformers.
Zhiqin Ma, Linglong Cai, Dan Zhou, Aihui Wen, Shuo Jiang, Chunyao Lin, Yuan Wang   +6 more
doaj   +1 more source

Solid-State Transformers for Interfacing Solar Panels to the Power Grid: An Optimum Design Methodology of a High Frequency Transformer for dc-dc Converter Applications [PDF]

, 2016
Nowadays the use of power electronic interfaces to integrate distributed generation with the power grid is becoming relevant due to the increased penetration of renewable energy sources like solar, and the continued ...
George, Kenny
core   +2 more sources

Analogue CMOS high-frequency continuouswavelet transform circuit

Electronics Letters, 1999
A 16-channel analog CMOS high-frequency continuous wavelet transform circuit has been realized. The circuit performs a time-frequency decomposition of a high-frequency input signal. A 100 MHz operating frequency, 45 MHz bandwidth, and 40 mW/channel power dissipation have been achieved using a 0.5 /spl mu/m CMOS process.
E.W. Justh, F.J. Kub
openaire   +1 more source

Organoids in pediatric cancer research

FEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source