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Accurate operando measurement of AlGaN/GaN HEMTs channel temperature and optimization of thermal design.
Nanotechnology
January 2025
Electronic Sci.&Eng., Xi'an Jiaotong University, 28 Xianning West Road,Beilin District, Xi 'an, Shaanxi Province, China, Xi'an, 710049, CHINA.
The accurate estimation of the temperature distribution of the GaN based power devices and optimization of the device structure is of great significance to possibly solve the self-heating problem, which hinders the further enhancement of the device performances. We present here the operando temperature measurement with high spatial resolution using Raman spectroscopy of AlGaN/GaN high electron mobility transistors (HEMTs) with different device structures and explore the optimization of the device thermal design accordingly. The lateral and depth temperature distributions of the single-finger HEMT were characterized.
View Article and Find Full Text PDFDo Brazilian Olympic athletes live longer than the general population? A retrospective cohort study.
Cien Saude Colet
January 2025
Programa de Pós-Graduação em Ciências do Movimento, Grupo de Pesquisa em Exercício e Nutrição na Saúde e Rendimento Esportivo (PENSARE), Universidade Federal de Mato Grosso do Sul (UFMS). Av. Costa e Silva s/n, Cidade Universitária. 79070-900 Campo Grande MS Brasil.
We investigated if Brazilian Olympic athletes live longer than the general population, and if there are differences between the types of sport. This is a retrospective cohort study with secondary data analysis. Data from Brazilian athletes of both sexes were included, from the 7th edition (1920) to the 25th edition (1992) of the Modern Olympic Games.
View Article and Find Full Text PDFAssessment of the content and quality of YouTube videos on retinopathy of prematurity: a cross-sectional study.
Arq Bras Oftalmol
January 2025
Department of Ophthalmology, Tinaztepe University Hospital, Izmir, Turkey.
Purpose: This study aimed to evaluate the quality and reliability of YouTube videos as an educational resource about retinopathy of prematurity.
Methods: Videos were sourced from YouTube using the search terms "retinopathy of prematurity" and "premature retinopathy" with the default settings. Each video was assessed on the following metrics: views, likes, dislikes, comments, upload source, country of origin, view ratio, like ratio, and video power index.
Classification-based pathway analysis using GPNet with novel P-value computation.
Brief Bioinform
November 2024
Center for Artificial Intelligence Research, Wake Forest University School of Medicine, Winston-Salem, NC 27101, United States.
Pathway analysis plays a critical role in bioinformatics, enabling researchers to identify biological pathways associated with various conditions by analyzing gene expression data. However, the rise of large, multi-center datasets has highlighted limitations in traditional methods like Over-Representation Analysis (ORA) and Functional Class Scoring (FCS), which struggle with low signal-to-noise ratios (SNR) and large sample sizes. To tackle these challenges, we use a deep learning-based classification method, Gene PointNet, and a novel $P$-value computation approach leveraging the confusion matrix to address pathway analysis tasks.
View Article and Find Full Text PDFA multi-analytical study of the Montelirio beaded attires: Marine resources, sumptuary crafts, and female power in copper age Iberia.
Sci Adv
January 2025
Department of Crystallography, Mineralogy and Agricultural Chemistry, Faculty of Chemistry, University of Seville, Seville, Spain.
Excellent indicators of technology, social organization, exchange patterns, and even beliefs, beads are a topic of research in their own right. Findings made between 2010 and 2011 at the Montelirio tholos burial, part of the Valencina Copper Age mega-site, in south-western Spain, revealed what amounts to the largest single-burial ever-documented assemblage of beads. Furthermore, the Montelirio beads were part of unparalleled beaded attires worn by some of the people buried in the grave, mostly females.
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