Results 51 to 60 of about 37,508 (305)
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
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
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
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
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
A 2.4 GHz Differential Class-E power Amplifier with on-chip Transformers for Bluetooth systems [PDF]
Engineering and Technology Journal, 2014 This work presents the design and simulation of a differential class-E Power Amplifier (PA) for class-1 Bluetooth systems in 0.13 μm RF CMOS technology. The proposed PA can deliver 21.57 dBm output power to a 50 Ω load at 2.4 GHz with 65.59 % Power-Added-
Abbas H. Issa +2 more
doaj +1 more source
Design of a differential power oscillator for 433 MHz WPT using e-GaN HEMTs
Ain Shams Engineering Journal, 2022 This paper presents a new differential power oscillator design based on a differential class-E power amplifier. The designs use high power enhancement-GaN HEMT (e-GaN) for its fast switching time, low ON resistance and wide energy band gap properties ...
Theodora M. Rezk +3 more
doaj +1 more source
FEBS Letters, EarlyView.This study reveals that the small GTPase Rab14 is necessary for human papillomavirus (HPV) infection and plays an essential role in the transport of virions to the trans‐Golgi network (TGN). HPV in the early endosome (EE), which harbors GTP‐bound Rab14, is transported to the TGN through the switch of Rab14 from its GTP‐bound to GDP‐bound form.
Yoshiyuki Ishii, Iwao Kukimoto
wiley +1 more source