Results 81 to 90 of about 118,033 (340)

Teaching the Doppler Effect in Astrophysics

, 2017
The Doppler effect is a shift in the frequency of waves emitted from an object moving relative to the observer. By observing and analysing the Doppler shift in electromagnetic waves from astronomical objects, astronomers gain greater insight into the ...
Cowley, Michael J., Hughes, Stephen W.
core   +2 more sources

Hard‐Magnetic Soft Millirobots in Underactuated Systems

Advanced Robotics Research, EarlyView.
This review provides a comprehensive overview of hard‐magnetic soft millirobots in underactuated systems. It examines key advances in structural design, physics‐informed modeling, and control strategies, while highlighting the interplay among these domains.
Qiong Wang, Zixuan Zhang, Bingyan Li, Junkai Wang, Hongcheng Gu   +4 more
wiley   +1 more source

Precision Diagnostics in Sports‐Related Traumatic Brain Injury: Pathophysiology, Biomarker Development and Emerging Technologies

Advanced Sensor Research, EarlyView.
Sports‐related traumatic brain injuries (TBIs) remain underdiagnosed, within amateur athletic cohorts. This review critically synthesises recent advancements in AI‐assisted neuroimaging, blood‐based biomarker profiling, wearable biosensing platforms for early detection, injury stratification, and longitudinal surveillance of TBIs.
Daniel Nicol, Mohamed T. Patel, Debarati Bhowmik, Pola Goldberg Oppenheimer   +3 more
wiley   +1 more source

Single‐Cell Transcriptome Analysis Reveals That Hmga2 Regulates Neuroinflammation and Retinal Function by Modulating Müller Cell Autophagy Through PI3K/AKT Signaling Following MCAO‐Induced Retinal Ischemia

Advanced Science, EarlyView.
Employing snRNA‐seq post‐MCAO‐induced retinal ischemia (RI), this study revealed a novel Hmga2‐high Müller cell subpopulation. Hmga2 knockout alleviated neuroinflammation and RI symptoms, potentially by binding PI3K and regulating Müller cell autophagy.
Weihao Lv, Juzheng Yuan, Zhe Ruan, Ya‐nan Dou, Hongchen Zhang, Xiaowei Fei, Leiying Chen, Zehan Zhang, Kai Yang, Xiuquan Wu, Zhou Fei, Fei Fei   +11 more
wiley   +1 more source

Personalized Medication for Chronic Diseases Using Multimodal Data‐Driven Chain‐of‐Decisions

Advanced Science, EarlyView.
A MDD‐CoD is proposed for personalized chronic disease medication. The framework simulates clinical chain‐of‐decisions through three linked deep learning tasks, validated on multi‐center datasets (3 hospitals, 4 diseases), demonstrating enhanced generalization and interpretability in cross‐disease applications.
Xiaoli Chu, Yiheng Ye, Siqiao Tang, Miaoru Han, Guowei Wang, Shuai Lin, Bingzhen Sun, Qingchun Huang, Yan Zhang, Xiaodong Chu, Kun Bao   +10 more
wiley   +1 more source

Extended Kalman Filtering of Satellite Doppler Tracking Data and IT¡¯S Application to Orbit Determination Problems [PDF]

Journal of Astronomy and Space Sciences, 1995
Using a directional antenna, the Doppler effect of satellites can be detected and the orbital elements can be obtained by the Extended Kalman Filter with the observed frequency shift data. We obtained the orbital elements of NOAA-11 by the application of
Dong-Kyu Kim, Kyu-Hong Choi
doaj  

Doppler-corrected differential detection system [PDF]

, 1991
Doppler in a communication system operating with a multiple differential phase-shift-keyed format (MDPSK) creates an adverse phase shift in an incoming signal.
Divsalar, Dariush, Simon, Marvin K.
core   +1 more source

Single‐Nucleus RNA Sequencing Reveals Mid‐Gestational Neurodevelopment Features in the Superior Temporal Plane from Fetuses with Nonsyndromic Cleft Lip and Palate

Advanced Science, EarlyView.
Single‐nucleus RNA sequencing of mid‐gestation brains from fetuses with nonsyndromic cleft lip and palate reveals major disruptions in cell composition, cell‐to‐cell signaling, and gene regulation. The transcription factor MEF2C is identified as a central regulator of these changes and shows that lowering MEF2C impairs synapse formation, linking cleft ...
Liu‐Lin Xiong, Xin‐Wei Huang, Qiu‐Xia Xiao, Ying‐Gang Zheng, Hao‐Yue Qin, Chang‐Le Fang, Li Chen, Ruo‐Lan Du, Qiu‐Lin Wang, Li‐Ren Huangfu, Ye‐Qing Fei, Yang‐Yang Zhao, Chen‐Yang Zhai, Ze‐Mian Chen, Shi‐Kun Yuan, Yu‐Ji Zhou, Xing‐Man He, Ting‐Ting Zhi, Xiao‐He Tian, Ting‐Hua Wang   +19 more
wiley   +1 more source

Analysis of Doppler frequency shift response mechanism based on OFDM system

MATEC Web of Conferences, 2018
OFDM system is widely used in mobile communication because of its high spectral efficiency and strong anti-multipath capability. However, in high dynamic scenarios, the Doppler shift between the transmitter and the receiver destroys the orthogonality ...
Li Ke, Sun Zhiguo, Ning Xiaoyan, Diao Ming   +3 more
doaj   +1 more source

Shear Stress Targeted Delivery of Nitroglycerin to Brain Collaterals Improves Ischaemic Stroke Outcome

Advanced Science, EarlyView.
Shear‐activated nanoparticles carrying nitroglycerin selectively target high‐shear stress collateral vessels during ischaemic stroke, enhancing blood flow to at‐risk brain without systemic side effects. This novel approach significantly improves outcomes in animal models, outperforming conventional nitroglycerin delivery.
Magdalena Litman, Sara Azarpeykan, Rebecca J Hood, Kristy Martin, Debbie Pepperall, Daniel Omileke, Fern Williams, Oktay Uzun, Deen Bhatta, Yuen K Yong, Alex Chan, Nicholas Hough, Sarah Johnson, Pablo Garcia Bermejo, Ferdinand Miteff, Carlos Garcia Esperon, Yvonne Couch, Alastair M Buchan, Neil J Spratt, Netanel Korin, Donald E Ingber, Daniel J Beard   +21 more
wiley   +1 more source