Results 31 to 40 of about 3,388 (263)

Research on the dynamic characteristics of electric field distribution of the ± 1100 kV Ultra high voltage converter transformer valve‐side bushing using weakly ionised gas conductance model

open access: yesHigh Voltage, 2022
Ultra high voltage (UHV) converter transformer valve‐side bushings are the key equipment indirect current (DC) transmission projects, and are subjected to high voltage and large current with large number of harmonics simultaneously.
Qingyu Wang   +5 more
doaj   +1 more source

Epigenetic blind spots – the role of DNA methylation dynamics in stem cell‐based models of embryogenesis

open access: yesFEBS Letters, EarlyView.
Embryo‐like structures (stembryos) are an innovative tool, but they are hindered by experimental variability and limited developmental potential. DNA methylation is crucial for mammalian development, but its status in stembryo models is poorly characterized.
Sara Canil   +4 more
wiley   +1 more source

Research on propagation law of partial discharge ultrasonic signal in converter transformer

open access: yesAIP Advances
When local discharge occurs inside the transformer, it will be accompanied by a burst sound to generate an ultrasonic signal, which can be used for fault monitoring and diagnosis inside the transformer.
Hao Duan   +4 more
doaj   +1 more source

An unexpected alternative viologen electron mediator site in tungsten‐containing formate dehydrogenase

open access: yesFEBS Letters, EarlyView.
An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley   +1 more source

A New Efficient Step-Up Boost Converter with CLD Cell for Electric Vehicle and New Energy Systems

open access: yesEnergies, 2020
An increase in demand for renewable energy resources, energy storage technologies, and electric vehicles requires high-power level DC-DC converters. The DC-DC converter that is suitable for high-power conversion applications (i.e., resonant, full-bridge ...
Muhammad Zeeshan Malik   +6 more
doaj   +1 more source

A Self-Resonant Transformer for CLLC Converter

open access: yes2025 Energy Conversion Congress & Expo Europe (ECCE Europe)
To date, the dominant method of passive component miniaturisation in power converters is through increases in switching frequency, which is enabled by emerging high frequency Wide-Band-Gap devices. However, to push the performance limits for the next generation of high-power-density power converters, research into integrated passive components-such as ...
Siwakoti, Y   +6 more
openaire   +2 more sources

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

open access: yesFEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace   +6 more
wiley   +1 more source

A three-phase multilevel converter with multi-winding medium-frequency transformer

open access: yesGong-kuang zidonghua, 2014
In view of problems of unbalanced capacitor voltage, or big volume and high cost of phase-shifting transformer which provides DC power existed in traditional multilevel converter, the paper proposed a three-phase multilevel converter based on cascaded H ...
ZHANG Yulei, ZHANG Yuxiang, GUO Mi
doaj   +1 more source

Influence of oil–paper configuration on electric field distribution of main insulation structure on valve‐side winding of UHV‐DC converter transformer

open access: yesIET Science, Measurement & Technology, 2022
The main insulation structure of the valve‐side winding of converter transformer bears the effect of AC and DC superimposed voltage during operation.
Lijun Yang   +3 more
doaj   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

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