Results 51 to 60 of about 16,901 (243)

Time-Frequency Analysis Methods: A Comprehensive Review of Techniques, Applications, and Emerging Trends

Anbar Journal of Engineering Sciences
Time-frequency analysis (TFA) bridges the gap between temporal and spectral signal representations, enabling the study of non-stationary phenomena. This paper reviews classical and modern TFA methods, including the Fourier Transform (FT), Short-Time ...
Zaynab N. Abdulhameed, Haraa Raheem Hatem, Jinan N. Shehab, Israa Hazem Ali, Marwa Al-Sultani   +4 more
doaj   +1 more source

Modulation of miR‐23b Wnt/β‐catenin Axis Strengthens Endothelial Barrier Properties

Advanced Science, EarlyView.
Early blood‐brain barrier (BBB) disruption contributes to stroke and CNS disease pathology. miR‐23b was identified as a regulator of BBB integrity in brain endothelial cells. Inhibition of miR‐23b enhanced barrier‐associated properties, promoted repair‐related signaling, and reduced BBB leakage in experimental stroke models, supporting further ...
Victor Anthony Martinez, Rose E. Presby, Sara Nakanishi, Pallavi Gaur, Ugur Akcan, Johannes Daugaard Krog, Iben Daugaard Krog, Lipi Das, David S. Johnson, Danny Jamoul, Douglas Jury, Brian Lawson, Jacob Körbelin, Lewis M. Brown, Vilas Menon, Dritan Agalliu, Irene Munk Pedersen   +16 more
wiley   +1 more source

Comparison of time-frequency analysis techniques in intraoperative somatosensory evoked potential (SEP) monitoring [PDF]

, 2002
Somatosensory evoked potentials (SEPs) can be monitored during spinal surgery to prevent possible spinal cord injury. In order to improve the reliability of SEP monitoring, an investigation of the application of various time-frequency analysis (TFA ...
Hu, Y, Keith Dipkei Luk, Luk, KD, John Chiyan Leong, Lu, WW, Leong, JC, William Weijia Lu, Yong Hu   +7 more
core   +1 more source

A Novel Fault Feature Recognition Method for Time-Varying Signals and Its Application to Planetary Gearbox Fault Diagnosis under Variable Speed Conditions

Sensors, 2019
The existing time-frequency analysis (TFA) methods mainly highlight the time-frequency ridges of the interested components by optimizing the time-frequency plane to facilitate the extraction of the relevant components.
Yong Lv, Bingqi Pan, Cancan Yi, Yubo Ma
doaj   +1 more source

Mitochondria and Neuromast Tagging With Fluorescent Gallium‐Triapine Analogues: In Cellulo MP FLIM and Zebrafish Live Imaging

Advanced Science, EarlyView.
Fluorescent BODIPY‐conjugated thiosemicarbazone ligands and their Ga(III), In(III), and Fe(III) complexes, inspired by Triapine, are developed as theranostic agents. Multiphoton FLIM and confocal microscopy in cancer cells and zebrafish reveal real‐time uptake, mitochondrial localisation, and whilst spectroscopic assays indicated preserved complex ...
Megan J. Green, Michael W. Jones, Merissa Saleem, Haobo Ge, Melita Tvardauskaite, Julia Dudzic, Fernando Cortezon‐Tamarit, Rory L. Arrowsmith, Charareh Pourzand, Gabriele Kociock‐Kohn, Nicholas H. Rees, Jonathan R. Dilworth, Stephen Faulkner, Stanley W. Botchway, David Gurevich, Sofia I. Pascu   +15 more
wiley   +1 more source

Robust time-frequency analysis of seismic data using general linear chirplet transform [PDF]

, 2018
Time-frequency analysis (TFA) has been widely used in seismic processing and interpretation. A good time-frequency representation can preferably characterize geologic spatial distribution and detect hydrocarbon reservoir anomalies.
Xiaodong Zheng, Yanting Duan, Yi Luan, Yucheng Huang   +3 more
core   +1 more source

Ultrasound‐Actuated Gene Editing in Human Kidney Organoids

Advanced Science, EarlyView.
Peptide‐stabilized nanoemulsions enable spatially controlled, ultrasound‐triggered delivery of gene‐editing proteins deep within human kidney organoid tissues. Focused acoustic pulses drive droplet vaporization, propelling cargo into target renal cells while preserving native tissue microarchitecture. This non‐viral platform improves both the depth and
Michael A. Miller, Nicole Vo, Utkarsh, Ivan Sokirniy, Justin Pritchard, Benjamin S. Freedman, Scott H. Medina   +6 more
wiley   +1 more source

Time -frequency analysis of high power microwave sources. [PDF]

, 2001
This dissertation utilized time-frequency analysis (TFA) to study high power microwave generation (20--40 MW) on large orbit, axis encircling, coaxial, gyrotrons.
Peters, Christopher Wayne
core  

Time-frequency analysis of click-evoked otoacoustic emissions by means of a minimum variance spectral estimation-based method [PDF]

, 2008
This paper proposes a new minimum variance spectral estimation (MVSE)-based time-frequency analysis (TFA) technique for click-evoked otoacoustic emissions (CEOAEs).
Hu, Y, Zhang, ZG, Chan, SC, Zhang, VW, McPherson, B   +4 more
core   +1 more source

Power of Feedback-Induced Beta Oscillations Reflect Omission of Rewards: Evidence From an EEG Gambling Study

Frontiers in Neuroscience, 2018
The functional role of high beta oscillations (20–35 Hz) during feedback processing has been suggested to reflect unexpected gains. Using a novel gambling task that separates gains and losses across blocks and directly compares reception of monetary ...
Zachary Yaple, Zachary Yaple, Mario Martinez-Saito, Nikita Novikov, Nikita Novikov, Dmitrii Altukhov, Dmitrii Altukhov, Dmitrii Altukhov, Anna Shestakova, Vasily Klucharev   +9 more
doaj   +1 more source