Results 21 to 30 of about 359,935 (314)

A Low Inrush Current Pre-Charging Strategy of M3C with Improved Nearest Level Modulation

Energies
The modular multilevel matrix converter (M3C) can perform AC/AC conversion directly. However, M3C operation often requires a pre-charging process, which can be challenging due to the need for fast pre-charging with low inrush current.
Rufei He, Yikai Li, Yumin Peng, Yiming Ma, Fanqi Huang, Hailong Li, Wei Luo   +6 more
doaj   +1 more source

A Hybrid Frequency Selective Absorber With Dual-Polarized Wireless Communication and Ultra-Wideband Absorption

IEEE Open Journal of Antennas and Propagation
Traditional multi-layer frequency selective absorbers (FSAs) with antenna circuit suffer from inter-layer interference, which can adversely affect the in-band frequency bandwidth of wireless communication (fractional bandwidth FBW <20% in ...
Youquan Wen, Sai-Wai Wong, Chunlin Ji, Ruopeng Liu, Yejun He   +4 more
doaj   +1 more source

Design and Implementation of Solar OLED Lighting Driver Circuit with Frequency Modulation Control

Energies, 2020
This paper proposes a single-stage single-ended primary inductor converter (SEPIC) converter circuit, which is applied to the organic light-emitting diodes (OLED) driver circuit.
Zhong-Rong Lin, Huang-Jen Chiu
doaj   +1 more source

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

Dynamic Distributed Brillouin Optical Fiber Sensing Based on Dual-Modulation by Combining Single Frequency Modulation and Frequency-Agility Modulation

IEEE Photonics Journal, 2017
Dynamic Brillouin optical fiber sensors based on fast scanning of Brillouin gain spectrum (BGS) are one of the most promising techniques to measure dynamic strains, where an ∼11-GHz bandwidth arbitrary waveform generator (AWG) or a vector ...
Dexin Ba, Dengwang Zhou, Benzhang Wang, Zhiwei Lu, Zhigang Fan, Yongkang Dong, Hui Li   +6 more
doaj   +1 more source

Research on the scheme for electrical vehicle aggregators participating in the frequency modulation auxiliary service market

Zhejiang dianli, 2023
A great number of electric vehicle （EV） charging piles can participate in the electricity spot market and auxiliary service market through load aggregation to comprehensively optimize operating costs.
LUAN Jie, LI Liang, LU Feng, ZHENG Songsong, LIU Haifeng, LI Yuan, HONG Min   +6 more
doaj   +1 more source

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

Joint Acoustic and Modulation Frequency

EURASIP Journal on Advances in Signal Processing, 2003
There is a considerable evidence that our perception of sound uses important features which is related to underlying signal modulations. This topic has been studied extensively via perceptual experiments, yet there are few, if any, well-developed signal ...
Les Atlas, Shihab A. Shamma
doaj   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

Algorithm for Designing Waveforms Similar to Linear Frequency Modulation Using Polyphase-Coded Frequency Modulation

Remote Sensing
Linear frequency modulation (LFM) waveforms have been widely adopted due to their excellent performance characteristics, such as good Doppler tolerance and ease of physical implementation. However, LFM waveforms suffer from high autocorrelation sidelobes
Pengpeng Wang, Zhan Wang, Peng You, Mengyun An   +3 more
doaj   +1 more source