Results 91 to 100 of about 18,290 (263)

Effects of vibration frequency and velocity parameters on Doppler frequency shift in laser Doppler vibrometer systems

Gümüşhane Üniversitesi Fen Bilimleri Enstitüsü Dergisi
In this article, the effects of maximum velocity, vibration frequency and vibration amplitude parameters of objects on Doppler frequency shift (DFS) in Laser Doppler Vibrometer (LDV) systems using lasers at 1064 nm and 1550 nm wavelengths have been examined.
Abdurrahman Günday, Aydın Balabey, Canberk Utar, Muhammed Demir, Muhammed Mert Yılmaz, Taylan Sipahi   +5 more
openaire   +1 more source

Growth differentiation factor‐15 and N‐terminal pro‐BNP in acute heart failure with preserved ejection fraction

ESC Heart Failure, Volume 12, Issue 2, Page 888-899, April 2025.
Abstract Aims Heart failure with preserved ejection fraction (HFpEF) continues to be an increasingly common health problem associated with a high mortality rate. Elevated levels of Growth differentiation factor‐15 (GDF15) and N‐terminal pro‐brain natriuretic peptide (NT‐proBNP) are reportedly associated with poor clinical outcomes in a broad range of ...
Yoichiro Otaki, Tetsu Watanabe, Mari Shimizu, Shingo Tachibana, Junya Sato, Yuta Kobayashi, Harutoshi Tamura, Shigehiko Kato, Satoshi Nishiyama, Hiroki Takahashi, Takanori Arimoto, Masafumi Watanabe   +11 more
wiley   +1 more source

Metabolic abnormalities and reprogramming in cats with naturally occurring hypertrophic cardiomyopathy

ESC Heart Failure, Volume 12, Issue 2, Page 1256-1270, April 2025.
Abstract Background and aims The heart is a metabolic organ rich in mitochondria. The failing heart reprograms to utilize different energy substrates, which increase its oxygen consumption. These adaptive changes contribute to increased oxidative stress.
Qinghong Li, Max Homilius, Erin Achilles, Laura K. Massey, Victoria Convey, Åsa Ohlsson, Ingrid Ljungvall, Jens Häggström, Brittany Vester Boler, Pascal Steiner, Sharlene Day, Calum A. MacRae, Mark A. Oyama   +12 more
wiley   +1 more source

Doppler Frequency Shift Prediction and Acquisition Method for High-Speed Aircraft Relative to Low Orbit Satellites

天地一体化信息网络
The rapid relative displacement between high-speed aircraft and low-Earth orbit (LEO) satellites causes Doppler frequency shifts, affecting signal synchronization, acquisition, and demodulation performance.
LI Yi, ZHOU Kangyan
doaj  

Considerations for drug trials in hypertrophic cardiomyopathy

ESC Heart Failure, Volume 12, Issue 2, Page 1095-1112, April 2025.
Abstract Hypertrophic cardiomyopathy (HCM) is a heterogeneous condition with potentially serious manifestations. Management has traditionally comprised therapies to palliate symptoms and implantable cardioverter‐defibrillators to prevent sudden cardiac death. The need for disease‐modifying therapies has been recognized for decades.
John P. Farrant, Matthias Schmitt, Anna B. Reid, Clifford J. Garratt, William G. Newman, Aneil Malhotra, Rhys Beynon, Masliza Mahmod, Betty Raman, Robert M. Cooper, Dana Dawson, Thomas Green, Sanjay K. Prasad, Anvesha Singh, Susanna Dodd, Hugh Watkins, Stefan Neubauer, Christopher A. Miller   +17 more
wiley   +1 more source

Left atrial function in uraemic patients: Four‐dimensional automatic left atrial quantitative technology study

ESC Heart Failure, Volume 12, Issue 2, Page 1316-1325, April 2025.
Abstract Objective This study aimed to evaluate the utility of left atrial volume and function in uraemic patients using four‐dimensional automatic left atrial quantification (4D auto LAQ) technology. Methods Thirty‐four undialysed uraemic patients (U‐ND group), 60 dialysed uraemic patients (U‐D group), and 32 healthy volunteers (N group) were enrolled
Bing Li, Meihua Chen, Xuning Huang
wiley   +1 more source

The rotational Doppler effect and the rotational frequency shift

, 2004
The rotational frequency shift (RFS) has been investigated. The existence of the RFS, previously proposed [Phys. Rev. Lett., 78, 2539 (1997)], has been explicitly demonstrated experimentally for the first time, for different quantum systems and frequency regimes.
openaire   +1 more source

Clinical significance of subclinical seizures in epilepsy presurgical evaluation: A systematic review and meta‐analysis

Epilepsia, EarlyView.
Abstract Objective Subclinical seizures (SCSs) remain an understudied aspect of presurgical evaluation in patients with drug‐resistant epilepsy (DRE), with uncertain prevalence, distribution among epilepsy types, and predictive value for surgical outcomes.
Pilar Bosque‐Varela, Panagiota‐Eleni Tsalouchidou, Petra Levicka, Lara Wadi, Elizabeth R. Blackwood, Eugen Trinka, Birgit Frauscher   +6 more
wiley   +1 more source

Rotational Doppler Effect of Vector Beams

Photonics
The optical rotational Doppler effect occurs when vortex beams are scattered by rotating objects and demonstrate the Doppler frequency shifts in scattered beams, which are associated with the optical angular momentum of vortex beams and the relative ...
Hehe Li, Dong Xu, Xinzhong Li
doaj   +1 more source

Non‐contrast MRI reliably captures perfusion abnormalities in status epilepticus

Epilepsia, EarlyView.
Abstract Objective To determine whether non‐contrast pseudo‐continuous arterial spin labeling (pCASL) detects status epilepticus (SE)–related perfusion abnormalities and shows quantitative correspondence with dynamic susceptibility contrast (DSC) perfusion magnetic resonance imaging (MRI), and to compare single‐slice and volumetric approaches for ...
Lukas Machegger, Pilar Bosque‐Varela, Jürgen Steinbacher, Johannes Pfaff, Eugen Trinka, Giorgi Kuchukhidze   +5 more
wiley   +1 more source