Results 41 to 50 of about 90,833 (301)

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

open access: yesFEBS 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

Frequency-Modulation Controlled Load-Independent Class-E Inverter

open access: yesIEEE Access, 2021
This paper proposes the frequency-modulation (FM) controlled load-independent class-E inverter, which has robustness against simultaneous variations of the load and the components in the output resonant filter. The main idea is to apply the FM control of
Yutaro Komiyama   +7 more
doaj   +1 more source

Conversor CC-CC trifásico ZVS PWM de três níveis [PDF]

open access: yes, 2012
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Elétrica.Esta tese propõe uma topologia de conversor CC-CC trifásico de três níveis, modulado por largura de pulso e com comutação ...
Agostini Junior, Eloi
core  

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

Topology and Characteristic Analysis of a Relay-Based Four-Coil WPT System for Electric Vehicles

open access: yesEnergies
With the increasing demand for flexible electric vehicle charging and grid-interactive energy utilization, wireless power transfer (WPT) systems with high efficiency, bidirectional power flow capability, and controllable charging characteristics have ...
Yifan Yan, Yunjian Wang, Jiahao Li
doaj   +1 more source

Sliding Mode Control for Stabilizing of Boost Converter in a Solid Oxide Fuel Cell

open access: yesCybernetics and Information Technologies, 2013
The output voltage of Solid Oxide Fuel Cell (SOFC) is usually changed with the temperature and hydrogen flow rate. Since the fuel cell can generate a wide range of voltages and currents at the terminals, as a consequence, a constant DC voltage and ...
Jiao Junsheng
doaj   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS 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

Extending the Controllability of Minimized VA Rating Wireless Power Transfer Systems Operating in Restricted Sub-Resonant Frequency Region

open access: yesIEEE Open Journal of Power Electronics
Sub-resonant frequency (SRF) operation of inductive wireless power transfer systems (IWPTS) allows attaining constant current (CC) output under varying coupling and output voltage conditions while minimizing transmitter volt-ampere (VA) rating ...
Andrey Vulfovich, Alon Kuperman
doaj   +1 more source

Research on a technique of wireless power transfer based on semi-bridge rectifier

open access: yesDianzi Jishu Yingyong, 2019
This paper proposed a technique of maximum efficiency and constant voltage output for wireless power transfer system. A semi-bridge rectifier is used to replace the common diode rectifier on the receiver side, and a Boost circuit is adopted to regulate ...
Lin Jiang, Xie Yue
doaj   +1 more source

Minimum-Output-Current-Ripple Control of Current-Fed Three-Level Phase-Shift Full-Bridge Converter

open access: yesEnergies, 2022
Electrified ports using medium-voltage DC (MVDC) renewable energy microgrids require current-fed dc/dc converters in application scenarios such as battery or ultracapacitor charging units and hydrogen production systems.
Haichao Wang   +5 more
doaj   +1 more source

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