Results 51 to 60 of about 23,589 (286)
Class E amplifiers and their modulation behaviour [PDF]
, 2006 oai:etheses.bham.ac.uk:3The Class E power amplifier has very high drain efficiency under quasi-static conditions, and is a good candidate for Envelope Elimination and Restoration (EER) or other polar techniques.
Kimber, David Paul
core
Tau acetylation at K331 has limited impact on tau pathology in vivo
FEBS Letters, EarlyView.We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto +3 more
wiley +1 more source
Energies, 2022 Recent major advancements in drone charging station design are related to the differences in coil design between the material (copper or aluminum) and inner thickness (diameter design) to address power transfer optimization and increased efficiency.
Aqeel Mahmood Jawad +6 more
doaj +1 more source
A new approach to Class-E power amplifier design [PDF]
, 2011 An innovative, recently introduced, methodology for microwave power amplifier design, is here extended to switching-mode Class-E amplifier operation. Such a technique is based on a complete and accurate electron device (ED) characterization, which is ...
Giorgio Vannini +11 more
core +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
60 W Class-E/F3 Switching Power Amplifier With an Improved Second Harmonic Distortion of −49 dBc
IEEE AccessThis paper presents a Class-E/F3 switching power amplifier (SPA) with reduced second harmonic leakage using parallel resonant circuit in series for the second harmonics.
Sooncheol Bae +12 more
doaj +1 more source
Impedance Matching Method for 6.78 MHz Class-E2-Based WPT System
Energies, 2021 The performance of a conventional Class-E2-based WPT system is sensitive to system parameters such as the coil coupling coefficient and load variation.
Yi Zhang +4 more
doaj +1 more source
CMOS Highly-Efficient Class-D Audio Amplifier [PDF]
, 2007 A one-chip integrated circuit of a 2-W class-D audio power amplifier with very high efficiency using a CMOS technology is presented. Compared with traditional class-AB amplifiers that are very poor at efficiency, most below 50%, the proposed class-D ...
杜明哲, Du, Ming-Jhe
core
FEBS Letters, EarlyView.Plasma membranes contain dynamic nanoscale domains that organize lipids and receptors. Because viruses operate at similar scales, this architecture shapes early infection steps, including attachment, receptor engagement, and entry. Using influenza A virus and HIV‐1 as examples, we highlight how receptor nanoclusters, multivalent glycan interactions ...
Jan Schlegel, Christian Sieben
wiley +1 more source
Modular ON/OFF and Phase-Shifting for High-Speed Radio Frequency Power Modulation
IEEE Open Journal of Power Electronics, 2020 Radio frequency (RF) power amplifiers are an integral part of many academic, medical, and industrial applications. For many of these applications, the RF power needs to quickly transition from one level to another.
Kawin Surakitbovorn +1 more
doaj +1 more source