Results 101 to 110 of about 1,922,635 (306)

A Single-Switch LCL-Resonant Isolated DC-DC Converter [PDF]

open access: yes, 2013
Isolated converters are desirable in the DC-DC power conversion applications where isolation and/or a large voltage step-up gain is needed. Traditional isolated DC-DC converters either utilize many switches to achieve high efficiency or use few switches ...
Liyan Qu   +5 more
core   +1 more source

Quadratic-Boost-Zeta Converter Based on Coat Circuit for High Voltage Gain Applications

open access: yesJournal of Engineering and Sustainable Development
This paper proposes a DC-DC step-up converter with a high voltage gain for solar and fuel cell systems. This converter combines a Zeta converter with one basic cell of the coated circuit and a Quadratic-Boost converter by a high-frequency transformer ...
Ahmed Mahmood Ali, Turki K. Hassan
doaj   +1 more source

An outer membrane vesicle‐associated two‐track model for enterotoxigenic Bacteroides fragilis oncogenesis

open access: yesMolecular Oncology, EarlyView.
Enterotoxigenic Bacteroides fragilis is a gut bacterium linked to bowel cancer. We propose that its toxin acts along two routes: at the cell surface, cutting the adhesion protein E‐cadherin and triggering inflammation; and inside the cell, delivered by bacterial vesicles, switching on NOD1 and cancer stem cell programs.
Kangchan Choi   +2 more
wiley   +1 more source

Optimizing photoactivation of PA‐mCherry for optical pooled CRISPR screens

open access: yesFEBS Open Bio, EarlyView.
Photoactivatable PA‐mCherry finds widespread use to optically tag individual cells. However, confocal 405 nm UV laser‐scanning (normal scan) is much less efficient than widefield UV illumination, limiting the use of PA‐mCherry on confocal instruments. We remedy this limitation by reporting that rapid and repeated confocal scanning with a low‐intensity,
Sravasti Mukherjee   +3 more
wiley   +1 more source

RoundMi: A quantitative method to analyze mitochondrial morphology in mitotic cells

open access: yesFEBS Open Bio, EarlyView.
RoundMi is a workflow for rapid analysis of mitochondrial morphology in mitotic cells. By combining adaptive preprocessing with automated segmentation and quantification, it enables accurate measurements from single focal plane images, reducing acquisition time and computational demands while remaining compatible with high‐throughput fixed and live ...
Elmira Parvindokht Bararpour   +2 more
wiley   +1 more source

Design an isolated forward converter

open access: yes, 2011
Access is limited to UniMAP community.This final year project report provides information related to the design and fabrication of a single transistor Isolated Forward Converter.
Wong, Chin Hong
core  

PWM Resonant Single-Switch Isolated Converter

open access: yes, 2009
The flyback converter is one of the most attractive isolated converters in small power applications because of its simple structure. However, it suffers from a high device stress and a large transformer size.
Moon, GunWoo   +3 more
core   +1 more source

Directed evolution of enzymes at the crossroads of tradition and innovation

open access: yesFEBS Open Bio, EarlyView.
An iterative cycle of data‐driven enzyme optimization comprising four stages: genetic diversification of a template enzyme, expression of protein variants, high‐throughput evaluation, and machine‐learning‐guided redesign of the next variant library.
Maria Tomkova   +2 more
wiley   +1 more source

Isolated ZVS two-transformer boost converter

open access: yes, 2009
A new zero-voltage-switching (ZVS) two-transformer boost converter (TTBC) is proposed in this paper. The magnetizing inductors of two transformer act as boost inductor, while two transformers provide a galvanic isolation.
Moon, GunWoo   +4 more
core   +1 more source

Review of DC-DC Partial Power Converter Configurations and Topologies

open access: yesEnergies
The Partial Power Processing (PPP) concept has garnered attention as it enables the down-sizing of converter and component ratings. Unlike conventional power processing, PPP addresses a portion of the transferred power, leading to a reduction in ...
Omar Gsous   +3 more
doaj   +1 more source

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