Results 51 to 60 of about 103,193 (347)

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, Ghazal A. Fahmy, Sameh A. Ibrahim, Hani F. Ragai   +3 more
doaj   +1 more source

Pulmonary Dysfunction Is Associated With Sleep Study Abnormalities in Children With Sickle Cell Disease: A Multicenter Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Pulmonary dysfunction and sleep abnormalities are common in children with sickle cell disease (SCD) and are associated with worse clinical outcomes. Whether spirometry abnormalities are associated with polysomnography (PSG) findings remains unclear.
Ammar Saadoon Alishlash, Anis Rabbani Nourani, A. K. M. Fazlur Rahman, Dima Ezmigna, Tarig Ali‐Dinar   +4 more
wiley   +1 more source

Power Receiving Unit for High-Power Resonant Wireless Power Transfer

Energies, 2023
A new power receiving unit (PRU) is proposed in this paper for resonant wireless power transfer (WPT), which is characterized by the capability of attracting high power from the power transmitting unit (PTU).
Ching-Yao Liu, Hsien-Chung Tang, Yueh-Tsung Shieh, Chih-Chiang Wu, Wei-Hua Chieng, Edward-Yi Chang, Daisuke Ueda   +6 more
doaj   +1 more source

Organoids in pediatric cancer research

FEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

Development of a Design Procedure for Class E Amplifiers

MATEC Web of Conferences, 2018
Here, the step-by-step design procedure for a Class E amplifier is presented. An existing Class E amplifier system is described using a systems architecture approach. The design decomposition for the case study is written so that Physical Solutions (PSs;
Siri Mattison S., Cochran David S.
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

Dammarenediol II enhances etoposide‐induced apoptosis by targeting O‐GlcNAc transferase and Akt/GSK3β/mTOR signaling in liver cancer

Molecular Oncology, EarlyView.
Etoposide induces DNA damage, activating p53‐dependent apoptosis via caspase‐3/7, which cleaves PARP1. Dammarenediol II enhances this apoptotic pathway by suppressing O‐GlcNAc transferase activity, further decreasing O‐GlcNAcylation. The reduction in O‐GlcNAc levels boosts p53‐driven apoptosis and influences the Akt/GSK3β/mTOR signaling pathway ...
Jaehoon Lee, Byung‐Cheol Han, Gi‐Bang Koo, Jihye Park, Mijin Kwon, Young Bin Park, Jae‐Mun Choi, Seung‐Ho Lee, Sangho Roh   +8 more
wiley   +1 more source

High Efficient CMOS Class-E Power Amplifier with a New Output Power Control Scheme [PDF]

Journal of Electrical and Electronics Engineering, 2013
This paper presents the design of a novel RF power amplifier (PA) with a new output power control scheme suitable for RF-ICs and portable systems. Employing a class-E amplifier as a drivertogether with soft-switching property of the main power stage ...
MESHKIN Reza, MAGHSOODI Mahrokh, SABERKARI Alireza, NIABOLI-GUILANI Mohammad   +3 more
doaj  

Preliminary study of 50 W Class-E GaN FET amplifier for 6.78 MHz capacitive wireless power transfer

Journal of Mechatronics, Electrical Power, and Vehicular Technology, 2020
A preliminary study of Class-E radio frequency power amplifier for wireless capacitive power transfer (CPT) system is presented in this paper. Due to a limitation in coupling capacitance value, a high frequency operation of switching power inverter is ...
Aam Muharam, Tarek Mahmoud Mostafa, Suziana Ahmad, Mitsuru Masuda, Daiki Obara, Reiji Hattori, Abdul Hapid   +6 more
doaj   +1 more source

Phase frequency characteristics evaluation for E-class devices output circuits

Физика волновых процессов и радиотехнические системы, 2022
Based on the unitarity of the E-class device circuit [S]-matrix, the phase frequency characteristics are estimated for the output circuit at any harmonic of the fundamental frequency.
Alexander V. Baranov
doaj   +1 more source