Results 31 to 40 of about 581 (271)
Analysis of DC voltage oscillation mechanism in AC/DC hybrid distribution system
The Journal of Engineering, 2019 DC voltage oscillation occurs more and more frequently in voltage source converter (VSC)-based AC/DC hybrid distribution system (AC/DC HDS). However, currently, the explanation of the oscillation mechanism is not clear enough.
Luyang Li +4 more
doaj +1 more source
FEBS Letters, EarlyView.Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho +3 more
wiley +1 more source
Voltage convertors for microprocessor devices [PDF]
, 2009 The task of this semester work is carried out summary converters DC / DC power supply suitable for small microprocessor devices with LCD display. As the input source voltage is 9V battery or two batteries (3V).
Kus, Václav
core
Sur les convertisseurs thermoélectroniques utilisant un rayonnement photonique comme source ionisante [PDF]
, 1965 The number of positive ions produced for emitter temperatures above 1500 °K is sufficient to neutralize the electron space charge. Below this temperature the process is incomplete.
J. Millet, J.P. David, J. Bensimon
core +1 more source
IET Smart GridThe dynamic characteristics of a grid‐forming converter (GFM) directly affect the stable operation of converter‐based power systems, where the power synchronisation loop plays a critical role in the shaping of the dynamic characteristics of the GFM ...
Yifeng Li +3 more
doaj +1 more source
The Journal of Engineering, 2018 Line commutate converter–modular multilevel converter (LCC–MMC) hybrid high voltage direct current (HVDC) system combines the advantages of both LCC-HVDC and MMC-HVDC, and will be wildly used in the future.
Dengjiang Xing +8 more
doaj +1 more source
FEBS Letters, EarlyView.We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee +3 more
wiley +1 more source
Low power bandgap voltage references [PDF]
, 2015 Bandgap voltage reference plays an important part in many circuits such as data convertors, voltage regulators, and oscillators. It provides a relatively constant voltage to other circuit blocks.
Zhou, Wei
core
The Journal of Engineering, 2019 Reducing the power loss and handling short-circuit faults in HVDC systems are crucial for economical and reliable operation of modular multilevel converters (MMC). This paper proposes a loss reduction method for AC voltage-boosted FBSM-MMC by controlling
Muchao Xiang, Jiabing Hu, Zhiyuan He
doaj +1 more source
Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system
FEBS Letters, EarlyView.Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley +1 more source