Results 71 to 80 of about 193,733 (267)
Single‐stage ZVS boost integrated push–pull power factor correction converter
IET Power ElectronicsThis study proposes a cutting‐edge AC/DC converter designed for medium‐power PFC applications. The converter is a single‐phase, single‐stage boost‐push–pull model.
Hamed Nazemi Sejzi, Ehsan Adib
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K-Factor Method Approach for Voltage Regulation of CCM Boost Converter
Eletrônica de PotênciaThis paper presents an approach for the effective control of the output voltage of Boost converters operating in continuous conduction mode, addressing the challenges associated with the presence of a non-minimum phase zero (RHPZ) in their transfer ...
Emanuel B. Martins +5 more
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A Soft-switched Pwm Interleaved Boost-flyback Converter With Power Factor Correction
Eletrônica de Potência, 2004 This paper proposes a soft switching interleaved Boost-Flyback converter employed as a preregulator stage providing power factor correction. The use of a soft commutation cell allows the main switches to be turned on and off under null current and null ...
Carlos A. Gallo +5 more
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Comparing the paths of Hedgehog release in artificial and natural settings
FEBS Letters, EarlyView.Hh morphogens require solubilization factors to overcome their tight association with the plasma membrane and signal to distant cells, but the precise functions of these factors are controversial. Here, we use published in vivo observations as the most relevant evidence to test their suggested functions and discuss contradictions and gaps between in ...
Janna Puschmann, Kay Grobe
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e-Prime: Advances in Electrical Engineering, Electronics and EnergyThe Boost converter topology is most widely used for power factor correction (PFC) converters. The conventional passive Boost PFC converter inherently suffers from the lack of controllability and non-ideal characteristics of the diode-bridge rectifier ...
Golam Sarowar +4 more
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Dark matter conversion as a source of boost factor
Journal of Physics: Conference Series, 2012 In interacting multi-component dark matter (DM) models, the interactions between the DM components can covert relatively heavy DM components into lighter ones at late times after the thermal decoupling. As a consequence, the relic density of the lightest DM component can be greatly enhanced at late times, which can lead to an alternative source of ...
Ze-Peng Liu, Yue-Liang Wu, Yu-Feng Zhou
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Molecular Oncology, EarlyView.High‐risk bladder cancer is typically treated with Bacillus Calmette‐Guérin (BCG), but 30–40% of patients relapse. No FDA‐ or CE‐approved biomarkers currently predict or prognosticate BCG failure. We systematically reviewed the literature and identified 72 eligible studies, revealing several promising biomarkers associated with BCG treatment response ...
Rui Ribeiro‐Pereira +7 more
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Molecular Oncology, EarlyView.The kinase SRPK1 directly interacts with the protein TOPBP1 and regulates the pre‐mRNA splicing of WIZ thereby contributing to the activation of the ATR/CHK1 replicative checkpoint in response to replicative stress. This allows cancer cells' genomic stability and survival.
Amani Shreim +17 more
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机车电传动, 2022 In order to eliminate the transient process of the hydrogen energy system of the hydrogen power locomotive upon switching between the grid-connected and standalone control modes, a seamless switching control approach for the hydrogen energy and ...
ZHENG Hengliang +4 more
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A Novel Single-Stage Tandem Soft-Switching Converter with Low Input Current Distortion
Inventions, 2018 In order to improve the power factor and reduce the input current harmonics, power factor correction (PFC) converters are utilized. This paper introduces a single-stage continuous conduction mode (CCM) soft-switched power factor correction (PFC ...
Jianming Xu, Bo Qian, Muhammad Humayun
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