Results 121 to 130 of about 286,343 (348)

Near‐Field Acoustic Imaging Using Fiber‐Optic Distributed Acoustic Sensing and Beamforming Techniques

Advanced Science, EarlyView.
This work introduces a beamforming‐based method to generate acoustic images from fiber‐optic distributed acoustic sensing (DAS) data. By performing 2D scanning around the sensing fiber, the approach enables near‐field imaging and localization of acoustic sources, even in regions distant from the fiber. A data‐driven DAS channel selection improves image
Marcelo A. Soto, Diego Badillo‐San‐Juan   +1 more
wiley   +1 more source

Wind mapping in Venus' upper mesosphere with the IRAM-Plateau de Bure interferometer

, 2012
The dynamics of the upper mesosphere of Venus (~85-115 km) have been characterized as a combination of a retrograde superrotating zonal wind (RSZ) with a subsolar-to-antisolar flow (SSAS).
A. Moullet, Bougher, Clancy, Clancy, Clancy, de Pater, E. Lellouch, Goldstein, Gurwell, H. Sagawa, Högbom, Lellouch, Lellouch, Limaye, M. Gurwell, Markiewicz, Moreno, Moullet, R. Moreno, Shah, Sornig, Steer, Widemann, Widemann   +23 more
core   +2 more sources

Methodological approach for the assessment of ultrasound reproducibility of cardiac structure and function: a proposal of the study group of Echocardiography of the Italian Society of Cardiology (Ultra Cardia SIC) Part I

Cardiovascular Ultrasound, 2011
When applying echo-Doppler imaging for either clinical or research purposes it is very important to select the most adequate modality/technology and choose the most reliable and reproducible measurements.
Agricola Eustachio, Santoro Alessandro, Marti Giuliano, Esposito Roberta, Sgalambro Aurelio, Ballo Piercarlo, D'Andrea Antonello, Muraru Denisa, Mele Donato, Innelli Pasquale, Losi Maria-Angela, Mondillo Sergio, Nistri Stefano, Galderisi Maurizio, Badano Luigi P, Marchioli Roberto, Filardi Pasquale, Mercuro Giuseppe, Marino Paolo   +18 more
doaj   +1 more source

Trigonelline Improves Metabolism and Cardiac Function of HFpEF Mice Via Gut Microbiome Alterations‐Mediated AMPK Activation

Advanced Science, EarlyView.
Metabolomics analyses reveal that trigonelline is markedly reduced in HFpEF hearts. Trigonelline supplementation alleviates metabolic disorders and improves cardiac function in HFpEF mice via gut microbiota‐mediated AMPK activation. Abstract Heart failure with preserved ejection fraction (HFpEF) is a prevalent end‐manifestation of cardiovascular ...
Zhe Cheng, Xiaowen Wang, Jiang Yu, Xiaorong Li, Qing Tang, Can Qu, Ding Yang, Yuanjing Li, Yong Xia, Yongzheng Guo   +9 more
wiley   +1 more source

Localisation of ventricular septal defects by simultaneous display of superimposed colour Doppler and cross sectional echocardiographic images. [PDF]

, 1985
E. M. G. Ortiz, Phillip J. Robinson, John Deanfield, Rodney C. G. Franklin, F J Macartney, Richard Wyse   +5 more
openalex   +1 more source

Increased Blood Flow and Tendon Swelling Precedes Vascular Expansion and Tissue Matrix Changes In Early Human Tendinopathy: A Potential Window for Superior Treatment Response

Advanced Science, EarlyView.
Human participants with early‐ or chronic‐stage tendinopathy and healthy controls are investigated using ultrasound Doppler, 3T and 7T MRI, and tendon biopsies. Tendon swelling and hyperperfusion are evident early, while vascular growth and extracellular matrix changes are most pronounced in chronic tendinopathy. Early intervention may provide superior
Max F. R. Merkel, Nikolaj M. Malmgaard‐Clausen, Marius Lendal, Hartwig R. Siebner, René B. Svensson, Stephanie G. Dakin, Marcus Krüger, Luisa Schmidt, Jakob Agergaard, Ching‐Yan Chloé Yeung, S. Peter Magnusson, Michael Kjaer   +11 more
wiley   +1 more source

Curved Bistable Origami‐Inspired Flexible Transcatheter Mitral Valve Clamping

Advanced Science, EarlyView.
A lightweight bistable curved origami dilator combines reversible deformation and high stability, offering a promising solution for minimally invasive mitral valve repair. Abstract Curved origami exhibits remarkable potential for minimally invasive medical applications owing to its unique geometric programmability and mechanical tunability. Building on
Siyu Gao, Fan Jiang, Xiuting Sun, Peng Qi, Jian Xu   +4 more
wiley   +1 more source

Optical coherence tomography measurements of biological fluid flows with picolitre spatial localization [PDF]

, 2014
This paper was presented at the 4th Micro and Nano Flows Conference (MNF2014), which was held at University College, London, UK. The conference was organised by Brunel University and supported by the Italian Union of Thermofluiddynamics, IPEM, the ...
4th Micro and Nano Flows Conference (MNF2014), Byers, R, Matcher, SJ   +2 more
core  

Cortical Microvascular Pulsatility in the Aging Mouse Brain and the Confounding Effects of Anesthesia

Advanced Science, EarlyView.
Multi‐modal optical imaging reveals microvascular pulsatility in the brain cortex of awake and anaesthetized mice. Awake hemodynamics in male mice are found to be remarkably stable until late life, with flow pulsatility being significantly higher than in females, despite similar average perfusion.
Mia Viuf Skøtt, Elizaveta Melnikova, Eugenio Gutiérrez, Vladimir Matchkov, Leif Østergaard, Dmitry D Postnov   +5 more
wiley   +1 more source

Measuring differential rotation of the K-giant $\zeta$\,And

, 2012
We investigate the temporal spot evolution of the K-giant component in the RS CVn-type binary system $\zeta$\,Andromedae to establish its surface differential rotation.
Barnes, Campbell, Dekker, Donati, E. Pedretti, Eaton, Gilliland, H. Korhonen, H. Le Coroller, Hussain, J. D. Monnier, J.-F. Donati, Joy, K. Vida, Kitchatinov, Korhonen, Korhonen, Kővári, Kővári, Kővári, L. Kriskovics, Monnier, P. Petit, Perruchot, Piskunov, Rice, Schrijver, Strassmeier, Vogt, Weber, Weber, Zs. Kővári   +31 more
core   +1 more source