Results 21 to 30 of about 160,242 (257)

Method to Estimate Thermal Transients in Reactors and Determine Their Parameter Sensitivities without a Forward Simulation

Energies, 2022
Thermal response time is an important parameter for the control of fast reactors. Modern thermal hydraulic codes allow for the modeling of transient responses and can also be used to understand the dominant factors that affect them.
Sydney A. Holdampf, Andrew G. Osborne, Mark R. Deinert   +2 more
doaj   +1 more source

Fast Transient Response Techniques for PWM Buck Converter

Journal of IKEEE, 2016
Abstract PWMbuckconvertersusuallyuseatype-IIIerroramplifier.Sincethisamplifierhasabigcapacitorwithslowslewrate,theycangenerateanunintendedlargeovershoot/undershootattheoutputwhenalargeloadcurrentchangeoccurs.Theycanalsorespondslowlybyvaryingthereferencevoltage.Inordertoincreasebatterylifetime ...
Jinmin Seok, Jung-Duk Suh, Bai-Sun Kong
openaire   +2 more sources

Reactor behavior comparisons for two liquid metal-cooled fast reactors during an event of loss of coolant

Case Studies in Thermal Engineering, 2019
The aim of this paper is to present a fast-numerical tool based on the average channel approach to analyze the response of fast reactors under unprotected loss of flow events.
Alejandría-D. Pérez-Valseca, Sergio Quezada-García, Armando-M. Gómez-Torres, Alejandro Vázquez-Rodríguez, Gilberto Espinosa-Paredes   +4 more
doaj   +1 more source

The contrasting response of outlet glaciers to interior and ocean forcing [PDF]

The Cryosphere, 2020
The dynamics of marine-terminating outlet glaciers are of fundamental interest in glaciology and affect mass loss from ice sheets in a warming climate. In this study, we analyze the response of outlet glaciers to different sources of climate forcing.
J. E. Christian, A. A. Robel, C. Proistosescu, C. Proistosescu, C. Proistosescu, G. Roe, M. Koutnik, K. Christianson   +7 more
doaj   +1 more source

Transient response enhancement method for DC-DC converters based on adaptive duty cycle adjustment

Ain Shams Engineering Journal
This article presents an adaptive duty cycle adjustment DC-DC converter for improving load transient response. The combination of adaptive clock control and DAC output variable reference voltage allows for rapid duty cycle saturation to further increase ...
Zhongjie Guo, Ziyi Qiu, Haoliang Wang, Ningmei Yu   +3 more
doaj   +1 more source

Research on transient AC overvoltage suppression method of DC sending end based on novel fast-excitation MCR

International Journal of Electrical Power & Energy Systems
The growing reliance on high-power high-voltage direct current (HVDC) transmission systems has intensified challenges associated with transient AC overvoltage induced by commutation failures resulting from converter operation characteristics.
Xiyu Yin, Xiaoyue Chen, Linyu Zhang, Shan Li, Yujie Ding, Rui Song, Chunlai Li   +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

Fast excitation structure for improving the transient time of magnetic controlled reactors

International Journal of Electrical Power & Energy Systems
With the increasing proportion of renewable energy usage, the randomness and volatility of renewable energy have led to a corresponding increase in the demand for reactive power regulation in the power system.
Xiyu Yin, Xiaoyue Chen, Yu Wang, Linyu Zhang, Baichao Chen, Cuihua Tian, Chunlai Li, Yujie Ding   +7 more
doaj   +1 more source

Low-field onset of Wannier-Stark localization in a polycrystalline hybrid organic inorganic perovskite

Nature Communications, 2021
Berghoff et al. discover that polycrystalline MAPbI3 undergoes transient Wannier Stark localization at moderate field strengths, exhibiting substantial optical modulation with a fast response time.
Daniel Berghoff, Johannes Bühler, Mischa Bonn, Alfred Leitenstorfer, Torsten Meier, Heejae Kim   +5 more
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