Results 81 to 90 of about 14,072,652 (376)

Immunosuppressive Drugs in Early Systemic Sclerosis and Prevention of Damage Accrual

open access: yesArthritis Care &Research, EarlyView.
Objective Organ damage in patients with systemic sclerosis (SSc) in individual organs such as the lungs may be prevented by receiving immunosuppressive drugs (ISs). A new measure of global organ damage, the Scleroderma Clinical Trials Consortium Damage Index (SCTC‐DI), has allowed us to investigate whether receiving ISs may reduce global organ damage ...
Murray Baron   +29 more
wiley   +1 more source

Age‐related changes in the coronary microcirculation influencing the diagnostic performance of invasive pressure‐based indices and long‐term patient prognosis

open access: yesCatheterization and Cardiovascular Interventions, Volume 100, Issue 7, Page 1195-1205, December 1, 2022., 2022
Abstract Objectives Investigate age‐related changes in coronary microvascular function, its effect on hyperemic and non‐hyperemic indices of stenosis relevance, and its prognostic implications. Background Evidence assessing the effect of age on fractional flow reserve (FFR), resting mean distal intracoronary pressure/mean aortic pressure (Pd/Pa), and ...
Daniel Faria   +15 more
wiley   +1 more source

The Doppler Effect

open access: yes, 2014
This presentation of 7 animations demonstrates the Doppler effect, which is used by astronomers to learn about the motions of stars, and to find planets. The principle is simple - in fact, even the animations consist only of expanding circles - but the effect is impressive. http://starguyspeaks.wordpress.com/2014/10/12/on-the-doppler-effect/
openaire   +4 more sources

Velocidade do som no ar e efeito Doppler em um único experimento

open access: yesRevista Brasileira de Ensino de Física
Esse artigo explica uma modificação do clássico experimento de medida da velocidade do som v s no ar livre pelo metodo de medida de tempo de propagacao de ondas sonoras captados por dois microfones, a fim de obter melhor precisao nas medidas ...
Everton Lüdke   +3 more
doaj   +1 more source

From Modeling to Sensing of Micro-Doppler in Radio Communications

open access: yesRemote Sensing, 2022
The Doppler effect in radio systems has been widely explored by the radio communication community. However, these studies have been limited to simple motion such as linear translation.
Louis Morge-Rollet   +4 more
doaj   +1 more source

OTFS Without CP in Massive MIMO: Breaking Doppler Limitations with TR-MRC and Windowing [PDF]

open access: yesarXiv, 2021
Orthogonal time frequency space (OTFS) modulation has recently emerged as an effective waveform to tackle the linear time-varying channels. In OTFS literature, approximately constant channel gains for every group of samples within each OTFS block are assumed.
arxiv  

Time‐Controlled Dual Targeting to Program Systemic and Intercellular Transfer of Therapeutic Effects

open access: yesAdvanced Functional Materials, EarlyView.
Aspirin‐liposomes loaded onto monocytes enable inflammation‐triggered targeting and efficient hand‐over of aspirin to inflamed cells. Monocytes uptake a significant portion of aspirin‐liposomes, prolonging therapeutic action. This approach enhances anti‐inflammatory effects through intercellular transfer, demonstrating a translational strategy for ...
Seung Eun Yu   +6 more
wiley   +1 more source

Transcatheter valve repair of tricuspid regurgitation with the PASCAL system: TriCLASP study 30‐day results

open access: yesCatheterization and Cardiovascular Interventions, Volume 100, Issue 7, Page 1291-1299, December 1, 2022., 2022
Abstract Background Severe tricuspid regurgitation (TR) is independently associated with increased morbidity and mortality. Percutaneous transcatheter approaches may offer an alternative for patients not amenable to surgery. Methods TriCLASP is a prospective, single‐arm, multicenter European post‐market clinical follow‐up study (NCT04614402) to ...
Stephan Baldus   +18 more
wiley   +1 more source

Detection of angular acceleration based on optical rotational Doppler effect.

open access: yesOptics Express, 2019
The angular acceleration of a spinning object can be estimated by probing the object with Laguerre-Gauss (LG) beams and analyzing the rotational Doppler frequency shift of returned signals.
Yanwang Zhai   +4 more
semanticscholar   +1 more source

Identification and Reversible Optical Switching of NV+ Centers in Diamond

open access: yesAdvanced Functional Materials, EarlyView.
NV+ centers in diamond are predicted to coexist with NV0 and NV– centers, but direct experimental confirmation remains challenging. Using positron annihilation spectroscopy with in situ light illumination, a charge transition NV+/0 is observed at 1.234(8) eV.
Marcel Dickmann   +13 more
wiley   +1 more source

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