USE OF THE MANNING EQUATION FOR THE DESIGN OF HIGH-GRADIENT CANALS

2016 ◽  
Author(s):  
Ashley Ostraff ◽  
◽  
Henintsoa Rakotoarisaona ◽  
Janelle Gherasim ◽  
Jared Abbott ◽  
...  
Keyword(s):  
High Gradient

scholarly journals Towards ultra-high gradient particle acceleration in carbon nanotubes

2020 ◽  
Vol 1596 ◽  
pp. 012028
Author(s):  
A Perera ◽  
A Bonatto ◽  
C Bontoiu ◽  
J Resta-López ◽  
V Rodin ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Particle Acceleration ◽  
High Gradient

Design, fabrication, and cold test of an S-band high-gradient accelerating structure for compact proton therapy facility

2021 ◽  
Vol 32 (4) ◽  
Author(s):  
Yu Zhang ◽  
Wen-Cheng Fang ◽  
Xiao-Xia Huang ◽  
Jian-Hao Tan ◽  
Cheng Wang ◽  
...  
Keyword(s):  
Proton Therapy ◽  
Cold Test ◽  
High Gradient ◽  
Accelerating Structure ◽  
Proton Therapy Facility

scholarly journals Design, fabrication, and high-gradient testing of an X -band, traveling-wave accelerating structure milled from copper halves

2018 ◽  
Vol 21 (6) ◽  
Author(s):  
Theodoros Argyropoulos ◽  
Nuria Catalan-Lasheras ◽  
Alexej Grudiev ◽  
Gerard Mcmonagle ◽  
Enrique Rodriguez-Castro ◽  
...  
Keyword(s):  
Traveling Wave ◽  
High Gradient ◽  
X Band ◽  
Accelerating Structure

scholarly journals Survival and management of patients with discordant high-gradient aortic stenosis: A propensity matched study

2021 ◽  
Vol 13 (3) ◽  
pp. 246-247
Author(s):  
Y. Bohbot ◽  
M. Kubala ◽  
D. Rusinaru ◽  
S. Marechaux ◽  
J.L. Vanoverschelde ◽  
...  
Keyword(s):  
Aortic Stenosis ◽  
High Gradient ◽  
Matched Study

An Inductive Debris Sensor Based on a High-Gradient Magnetic Field

2019 ◽  
Vol 19 (8) ◽  
pp. 2879-2886 ◽  
Author(s):  
Song Feng ◽  
Leilei Yang ◽  
Guang Qiu ◽  
Jiufei Luo ◽  
Rui Li ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Gradient Magnetic Field ◽  
High Gradient

True-severe stenosis in paradoxical low-flow low-gradient aortic stenosis: outcomes after transcatheter aortic valve replacement

2021 ◽  
Author(s):  
Taishi Okuno ◽  
Noé Corpataux ◽  
Giancarlo Spano ◽  
Christoph Gräni ◽  
Dik Heg ◽  
...  
Keyword(s):  
Aortic Valve ◽  
Aortic Stenosis ◽  
Aortic Valve Replacement ◽  
Functional Status ◽  
Valve Replacement ◽  
Transcatheter Aortic Valve Replacement ◽  
Low Flow ◽  
Aortic Valve Area ◽  
High Gradient ◽  
Transcatheter Aortic Valve

Abstract Aims The ESC/EACTS guidelines propose criteria that determine the likelihood of true-severe aortic stenosis (AS). We aimed to investigate the impact of the guideline-based criteria of the likelihood of true-severe AS in patients with low-flow low-gradient (LFLG) AS with preserved ejection fraction (pEF) on outcomes following transcatheter aortic valve replacement (TAVR). Methods and results In a prospective TAVR registry, LFLG-AS patients with pEF were retrospectively categorized into high (criteria ≥6) and intermediate (criteria <6) likelihood of true-severe AS. Haemodynamic, functional, and clinical outcomes were compared with high-gradient AS patients with pEF. Among 632 eligible patients, 202 fulfilled diagnostic criteria for LFLG-AS. Significant haemodynamic improvement after TAVR was observed in LFLG-AS patients, irrespective of the likelihood. Although >70% of LFLG-AS patients had functional improvement, impaired functional status [New York Heart Association (NYHA III/IV)] persisted more frequently at 1 year in LFLG-AS than in high-gradient AS patients (7.8%), irrespective of the likelihood (high: 17.4%, P = 0.006; intermediate: 21.1%, P < 0.001). All-cause death at 1 year occurred in 6.6% of high-gradient AS patients, 10.9% of LFLG-AS patients with high likelihood [hazard ratio (HR)adj 1.43, 95% confidence interval (CI) 0.68–3.02], and in 7.2% of those with intermediate likelihood (HRadj 0.92, 95% CI 0.39–2.18). Among the criteria, only the absence of aortic valve area ≤0.8 cm2 emerged as an independent predictor of treatment futility, a combined endpoint of all-cause death or NYHA III/IV at 1 year (OR 2.70, 95% CI 1.14–6.25). Conclusion Patients with LFLG-AS with pEF had comparable survival but worse functional status at 1 year than high-gradient AS with pEF, irrespective of the likelihood of true-severe AS. Clinical Trial Registration https://www.clinicaltrials.gov. NCT01368250.

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