Results 91 to 100 of about 118,033 (340)

The Space-Based Altimeter Echo-Signal when Doppler Scattering is taken Into Account

Известия высших учебных заведений России: Радиоэлектроника, 2017
In the analytical approximation of time dependent average power of a satellite altimeter echo-signal (power profile) the Doppler scattering of individual specular point responses is usually neglected.
D. S. Borovitsky, A. E. Zhesterev, V. P. Ipatov, R. M. Mamchur   +3 more
doaj  

Motional frequency shifts of trapped ions in the Lamb-Dicke regime

, 2007
First order Doppler effects are usually ignored in laser driven trapped ions when the recoil frequency is much smaller than the trapping frequency (Lamb-Dicke regime).
A. A. Madej, D. J. Wineland, I. Lizuain, J. Eschner, J. G. Muga   +4 more
core   +1 more source

FMO2 Promotes Angiogenesis via Regulation of N‐Acetylornithine

Advanced Science, EarlyView.
This study identifies flavin‐containing monooxygenase 2 (FMO2) as a novel proangiogenic regulator in endothelial cells. Targeted FMO2 ablation impairs vessel sprouting, whereas its compensation potently enhances angiogenesis. Metabolomics and single‐cell sequencing reveal that FMO2 drives vascular growth via the N‐acetylornithine/ATF3/NOTCH1 axis ...
Jingyi Wang, Yinghui Xu, Xianpeng Wu, Mo Li, Changchen Xiao, Zaiyang Fu, Yongjian Chen, Qingju Li, Yating Ruan, Jing Zhao, Zhiwei Zhong, Jinghai Chen, Wei Zhu, Jinliang Nan, Cheng Ni, Xinyang Hu   +15 more
wiley   +1 more source

Joint estimation of target time delay and Doppler frequency in passive radar system

Tongxin xuebao, 2015
A novel method of joint estimation of time delay and Doppler shift in passive radar system based on short-time fractional Fourier transform (STFRFT) was proposed.Firstly,the mathematical expression of the STFRFT time-frequency resolution was studied for ...
ANGPeng W, IUTian-shuang Q, IJing-chun L, ANHai-feng T   +3 more
doaj   +2 more sources

Frame Capture in IEEE 802.11p Vehicular Networks [PDF]

, 2010
IEEE 802.11p is the new standard proposed by the IEEE for wireless connectivity in a vehicular context. It can be used by Advanced Driver Assistance Systems (ADAS) and Intelligent Transport Systems (ITS) to make vehicles aware of the traffic around them ...
Eenennaam, Martijn van, Wijngaarden, Pieter van   +1 more
core   +1 more source

PM2.5 Induce Endothelial‐Mesenchymal Transition and Cardiac Fibrosis via the NCOA4‐Mediated Ferritinophagy

Advanced Science, EarlyView.
This study primarily reveals that PM2.5‐derived Fe‐containing particles, particularly magnetite, are specifically enriched in the heart. Here, they interact with NCOA4 in endothelial cells, disrupt iron homeostasis by enhancing ferritinophagy, and subsequently trigger the process of EndMT through the NCOA4/KLF5 pathway.
Qinglin Sun, Mengyuan Wang, Lin Liu, Ruiyang Ding, Kanglin Yan, Shiqian Liu, Xiaoke Ren, Qing Xu, Zhiwei Sun, Qian Liu, Yi Yang, Junchao Duan   +11 more
wiley   +1 more source

The delta Doppler technique for LDV measurements at long distances [PDF]

A technique for measuring velocity, referred to as a Delta Doppler technique, was presented. This technique determines scattering source velocities by measuring the difference in Doppler shifts of two different frequencies.
Cliff, W. C.
core   +1 more source

A Single‐Component Adhesive Sponge Based on Blood‐Triggered and Autopenetrative Adhesion for Robust Vascular Closure

Advanced Science, EarlyView.
This study presents MonoSeal, a single‐component adhesive sponge powered by the novel Autopenetrative Adhesion (APA) mechanism. Unlike traditional adhesives, which require external stimuli, APA enables strong tissue adhesion under dynamic, high‐pressure bleeding conditions. MonoSeal's ability to autonomously seal large‐size arterial defects underscores
Rong Wang, Weishi Zheng, Yuxuan Huang, Rui Zhang, Yi Zhang, Jingying Yan, Yuqing Gu, Jingyun Xi, Tun Yuan, Hua Su, Xianzhu Zhang, Xiaozhao Wang, Shaohui Xiong, Zhenfeng Cheng, Hongwei Ouyang, Yi Hong   +15 more
wiley   +1 more source

ALK1 controls hepatic vessel formation, angiodiversity, and angiocrine functions in hereditary hemorrhagic telangiectasia of the liver

Hepatology, EarlyView., 2022
Hepatic endothelial Alk1 signaling protects from development of vascular malformations while maintaining organ‐specific endothelial differentiation and angiocrine portmanteau of the names Wingless and Int‐1 signaling. Abstract Background and Aims In hereditary hemorrhagic telangiectasia (HHT), severe liver vascular malformations are associated with ...
Christian David Schmid, Victor Olsavszky, Manuel Reinhart, Vanessa Weyer, Felix A. Trogisch, Carsten Sticht, Manuel Winkler, Sina W. Kürschner, Johannes Hoffmann, Roxana Ola, Theresa Staniczek, Joerg Heineke, Beate K. Straub, Jens Mittler, Kai Schledzewski, Peter ten Dijke, Karsten Richter, Steven Dooley, Cyrill Géraud, Sergij Goerdt, Philipp‐Sebastian Koch   +20 more
wiley   +1 more source

Filter Bank Multicarrier Waveform Used for Integrated SAR and Communication Systems

Leida xuebao, 2018
The integrated Synthetic Aperture Radar (SAR) and Communication system can improve the networking capabilities of SAR, realize the real-time transmission of detection data, and improve the overall performance of the system.
Zhu Kehong, Wang Jie, Liang Xingdong, Wu Yirong   +3 more
doaj   +1 more source