Results 81 to 90 of about 118,136 (346)
Zero‐current transition single‐ended forward converter [PDF]
IET Power Electronics, 2020 In this study, a novel zero‐current transition (ZCT) auxiliary circuit is applied to pulse‐width modulation single‐ended forward converter (PWM SEFC). The proposed ZCT circuit has achieved the power switch zero‐current switching (ZCS) turn‐on; the power switch ZCT turn‐off; the auxiliary switch ZCS and zero‐voltage switching turn on/off and soft ...
openaire +1 more source
, 2015 The article describes the design and construction of one-channel plasma speaker. Absence of mechanical membrane gives the plasma speaker no frequency limitation.
Kovář, J.
core
Molecular Oncology, EarlyView.Meta‐transcriptome analysis identified FGF19 as a peptide enteroendocrine hormone associated with colorectal cancer prognosis. In vivo xenograft models showed release of FGF19 into the blood at levels that correlated with tumor volumes. Tumoral‐FGF19 altered murine liver metabolism through FGFR4, thereby reducing bile acid synthesis and increasing ...
Jordan M. Beardsley +5 more
wiley +1 more source
EnergiesSeveral applications require bidirectional power converters with high-voltage gain. While several topologies have been proposed, none of them exhibit Buck-Boost characteristics in both forward and reverse power transfer.
Victor Fernão Pires +4 more
doaj +1 more source
Measurement + Control, 2020 The common dual-pulse-width-modulation converter adopts the independent method to control the rectifier and inverter, which has the defects including direct current voltage fluctuation, slow system response and so on.
Bo Fan +3 more
doaj +1 more source
Molecular Oncology, EarlyView.Aldehyde dehydrogenase 1A1 (ALDH1A1) is a cancer stem cell marker in several malignancies. We established a novel epithelial cell line from rectal adenocarcinoma with unique overexpression of this enzyme. Genetic attenuation of ALDH1A1 led to increased invasive capacity and metastatic potential, the inhibition of proliferation activity, and ultimately ...
Martina Poturnajova +25 more
wiley +1 more source
Digital logic elements provide additional functions from analog input [PDF]
, 1964 A dc analog input can be used to produce an integrator with high dynamic range or a position servo with inherent stability. This is done by a switching system using digital-to-analog converters and an electronic switch to obtain the desired ...
Matty, T. C.
core +1 more source
Isolation and multiple output extensions of a new optimum topology switching DC-to-DC converter [PDF]
, 1978 The recently introduced new optimum topology dc-to-dc converter is extended in a simple and elegant manner to provide dc isolation and multiple outputs.
Middlebrook, R. D., Ćuk, Slobodan
core +1 more source
Rethinking plastic waste: innovations in enzymatic breakdown of oil‐based polyesters and bioplastics
FEBS Open Bio, EarlyView.Plastic pollution remains a critical environmental challenge, and current mechanical and chemical recycling methods are insufficient to achieve a fully circular economy. This review highlights recent breakthroughs in the enzymatic depolymerization of both oil‐derived polyesters and bioplastics, including high‐throughput protein engineering, de novo ...
Elena Rosini +2 more
wiley +1 more source
Simulation Analysis on Digital Feed-Forward Contoller for DC/DC Converter with Battery Load
机车电传动, 2012 Dynamic performance of DC/DC converter with battery load could be enhanced by adopting feed-forward control method. Feed-forward controller for vehicle supply based on half-bridge topological DC/DC converter was designed and simulated, which was proved ...
ZHANG Xiao-yong, XIE Wei, LI Mei
doaj