Results 51 to 60 of about 2,361 (309)

Comparison of boost and LLC converter and active clamp isolated full-bridge boost converter for photovoltaic DC system

The Journal of Engineering, 2019
DC collection network offers an attractive alternative to AC network for photovoltaic, as it avoids the charging current issues and reduces the size and weight. Variable voltage gain DC/DC converters play an important role in DC collection network.
Jiye Liu, Zedong Zheng, Kui Wang, Yong Dong Li   +3 more
doaj   +1 more source

Quantum dynamics and statistics of two coupled down-conversion processes

, 2000
In the framework of Heisenberg-Langevin theory the dynamical and statistical effects arising from the linear interaction of two nondegenerate down-conversion processes are investigated.
Facchi P, Fonda L, Fonda L, Graham R, Herec J, Jan Perina, Janszky J, Jaroslav Rehácek, JiríHerec, , Kraus K, Ladislav Mista, Meystre P, Misra B, Mista L Jr, Mista L Jr, Perina J, Perina J, Perina J, Perinová V, Rehácek J, Viktor Jelínek   +20 more
core   +1 more source

Scorpion DAC: a new family of switched-capacitor D/A convertors

Electronics Letters, 1986
The theory of the simulated capacitor or resistor array parasitic-insensitive/offset-nulling (SCORPION) digital to analogue convenor (DAC) is presented. This unique DAC architecture features high speed, high modularity, reduced 1/f noise and excellent economy. The properties of this DAC allow modular development of n-bit DACs in MOS.
R.M. Payton, M. Savic
openaire   +1 more source

Network divergence analysis identifies adaptive gene modules and two orthogonal vulnerability axes in pancreatic cancer

Molecular Oncology, EarlyView.
Tumors contain diverse cellular states whose behavior is shaped by context‐dependent gene coordination. By comparing gene–gene relationships across biological contexts, we identify adaptive transcriptional modules that reorganize into distinct vulnerability axes.
Brian Nelson, Lyanne Delgado‐Coka, Natalia Marchenko, Luisa F. Escobar‐Hoyos, Kenneth R. Shroyer, Alisa Yurovsky, Trey Ideker, Gábor Balázsi, Thomas MacCarthy, Scott Powers   +9 more
wiley   +1 more source

A Wide Input Voltage Range Unidirectional Resonant Switched‐Capacitor Converter for Fuel Cell Applications

IET Power Electronics
This paper introduces a full bridge high voltage gain resonant switched capacitor converter (SCC) providing soft switching conditions for all power semiconductors above and below the resonant frequencies.
Sajad Afshar Zarandi, Reza Beiranvand, Koosha Choobdari Omran   +2 more
doaj   +1 more source

Current-sensorless online ESR monitoring of capacitors in boost converter

The Journal of Engineering, 2019
boost circuit has been widely used in photovoltaic generation system and electrolytic capacitor is one of the most vulnerable components in the circuit.
Shengxue Tang, Shasha Dong, Yajing Liu, Qiran Zhang   +3 more
doaj   +1 more source

Engineered extracellular vesicles enriched with the miR‐214/199a cluster enhance the efficacy of chemotherapy in ovarian cancer

Molecular Oncology, EarlyView.
Loss of the miR‐214/199a cluster is associated with recurrence in ovarian cancer. Engineered small extracellular vesicles (m214‐sEVs) elevate miR‐214‐3p/miR‐199a‐5p in tumor cells, suppress β‐catenin, TLR4, and YKT6 signaling, reprogram tumor‐derived sEV cargo, reduce chemoresistance and migration, and enhance carboplatin efficacy and survival in ...
Weida Wang, Ayesha Alvero, Yi Qin, Mingjin Wang, Alexandra Fox, Yanfeng Li, Michael Millman, Amy Kemper, Gil Mor, Xian Shuang Liu, Michael Chopp, Zheng Gang Zhang, Yi Zhang   +12 more
wiley   +1 more source

Design and comparative evaluation of converter topologies for six-phase switched reluctance motor drives

The Journal of Engineering, 2019
This paper presents a novel converter topology for six-phase switched reluctance motor (SRM) drives, which reduces the number of switches and diodes by half, compared with the conventional asymmetric half-bridge (AHB) converter, and needs no additional ...
Xu Deng, Barrie Mecrow
doaj   +1 more source

Mycobacterial cell division arrest and smooth‐to‐rough envelope transition using CRISPRi‐mediated genetic repression systems

FEBS Open Bio, EarlyView.
CRISPRI‐mediated gene silencing and phenotypic exploration in nontuberculous mycobacteria. In this Research Protocol, we describe approaches to control, monitor, and quantitatively assess CRISPRI‐mediated gene silencing in M. smegmatis and M. abscessus model organisms.
Vanessa Point, Wafaa Achache, Janïs Laudouze, Eliana Sepulveda Ramos, Mickaël Maziero, Céline Crauste, Stéphane Canaan, Pierre Santucci   +7 more
wiley   +1 more source

A high step‐up high step‐down coupled inductor based bidirectional DC–DC converter with low voltage stress on switches

IET Power Electronics
This paper proposes, a novel soft‐switching bidirectional direct current to direct current (DC–DC) converter based on switched‐capacitor and coupled‐inductor.
Pouya Abolhassani, Mohammad Maalandish, Ali Nadermohammadi, Mohammad Bagher Bannae Sharifian, Mohammad Reza Feyzi, Seyed Hossein Hosseini   +5 more
doaj   +1 more source