Results 61 to 70 of about 206,444 (292)

Highly Biomimetic Ectodermal Epithelial Organoids for Epithelial Barrier Stimulation Assays

Advanced Science, EarlyView.
ABSTRACT Evaluating the potential toxicity of pharmaceuticals and biomaterials to ectodermal epithelia, such as the oral mucosa and skin, is indispensable in pre‐clinical assessments. However, this remains a challenge primarily owing to the lack of physiologically relevant and accurate screening models.
Yiming Chen, Yuman Li, Chenyu Deng, Leran Li, Zhewen Hu, Boon Chin Heng, Yuting Niu, Shiyu Sun, Min Gao, Xiaopei Chi, Ying He, Mingming Xu, Ying Huang, Xuliang Deng   +13 more
wiley   +1 more source

Passive Radar Source Localization Based on Cuckoo Search NVTDOA

International Journal of Antennas and Propagation, 2020
In order to meet the requirement of passive radar source localization in electronic warfare, the concept of the virtual time differences of arrival (VTDOA) is proposed by taking advantage of the characteristics of the same UAV in different positions at ...
Gang Niu, Jie Gao, Tai-hang Du
doaj   +1 more source

Method of locating persons in distress [PDF]

, 1977
A method for locating any person in distress in a selected area on the surface of the earth who has deployed passive radio frequency (RF) reflectors in a predetermined arrangement is analyzed.
Sivertson, W. E., Jr.
core   +1 more source

Endometrial Epithelial Lactate Deficiency Drives CD8+ T‐Cells Dysregulation in Unexplained Recurrent Implantation Failure

Advanced Science, EarlyView.
Unexplained recurrent implantation failure (RIF) represents a significant clinical challenge. Our results demonstrate that reduced lactate production in the RIF endometrium impairs the suppression of cytotoxic CD8+ T‑cells, allowing their proliferation and thereby disrupting the local immune balance essential for successful embryo implantation.
Yuanlin He, Kang Ke, Qingxia Meng, Yichun Guan, Jichun Tan, Hong Lv, Boxian Huang, Chan Tian, Qinyan Zou, Mingxing An, Yao Gao, Jingjing Chen, Xiaoyu Wei, Xi Wang, Hongxia Ma, Yuan Lin, Feiyang Diao, Yayun Gu, Zhibin Hu   +18 more
wiley   +1 more source

Radar Error Correction Method Based on Improved Sparrow Search Algorithm

Applied Sciences
Aiming at the problem of the limited application range and low accuracy of existing radar calibration methods, this paper studies the radar calibration method based on cooperative targets, and establishes the integrated radar measurement error model ...
Yifei Liu, Zhangsong Shi, Bing Fu, Huihui Xu   +3 more
doaj   +1 more source

Discovering Interpretable Semantics from Radio Signals for Contactless Cardiac Monitoring

Advanced Science, EarlyView.
This study presents a semantic representation framework for clinically interpretable cardiac monitoring from contactless radio signals. It formulates radio semantic learning as an information‐bottleneck problem and approximates the objective via intra‐modal compression and cross‐modal alignment, structuring radio measurements into meaningful semantic ...
Jinbo Chen, Haoyu Wang, Guixin Xu, Yuqin Yuan, Xinmeng Cai, Zhengwu Wei, Dongheng Zhang, Qibin Sun, Tianwei Zhang, Cuntai Guan, Yan Chen   +10 more
wiley   +1 more source

Performance Analysis of a Sky-Wave Over-the Horizon Radar Simulation Tools

Revista Elektrón
This paper presents the main features of a skywave over-the-horizon radar simulation software and results on its ability to represent and detect different search scenarios.
Zenon Saavedra, Adrian Llanes, Gonzalo Alderete Hero, Julian Di Venanzio, Ana Geogina Elias   +4 more
doaj   +1 more source

The Fundamentals of Radar with Applications to Autonomous Vehicles [PDF]

, 2019
Radar systems can be extremely useful for applications in autonomous vehicles. This paper seeks to show how radar systems function and how they can apply to improve autonomous vehicles.
Rummel, Kameron
core   +1 more source

Liquid Metals in Radio Frequency Applications: A Review of Physics, Manufacturing, and Emerging Technologies

Advanced Electronic Materials, EarlyView.
This paper reviews the physics of liquid metals in RF devices, including the influence of mechanical strain on resonance as well as fabrication methods and strategies for designing tunable and strain‐tolerant inductors, capacitors, and antennas.
Md Saifur Rahman, William J. Scheideler
wiley   +1 more source

A Novel Speed Compensation Method for ISAR Imaging with Low SNR

Sensors, 2015
In this paper, two novel speed compensation algorithms for ISAR imaging under a low signal-to-noise ratio (SNR) condition have been proposed, which are based on the cubic phase function (CPF) and the integrated cubic phase function (ICPF), respectively ...
Yongxiang Liu, Shuanghui Zhang, Dekang Zhu, Xiang Li   +3 more
doaj   +1 more source