Results 21 to 30 of about 182,049 (317)
Optimal Control of Cylindrical Plunge Grinding Using Dynamic Programming
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2012 An optimal grinding control scheme for cylindrical plunge grinding is proposed in this paper. The proposed grinding control scheme provides the optimal dressing and grinding parameters for batch production. The proposed control scheme consists of a G.A. (
Jeongju CHOI
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Valves and Valve Gearing [PDF]
Proceedings of the Institution of Automobile Engineers, 1909 n ...
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Valve-in-Valve Replacement Using a Sutureless Aortic Valve [PDF]
American Journal of Case Reports, 2016 BACKGROUND We present a unique case of a 61-year-old female patient with homograft deterioration after redo surgery for prosthetic valve endocarditis with root abscess. CASE REPORT The first operation was performed for type A dissection with root, arch, and elephant trunk replacement of the thoracic aorta.
Dohmen, Pascal M. +4 more
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Designing redundant metering valves for hydraulic actuators under mixability and low cost-constraints [PDF]
, 2010 This article deals with the design of redundant metering valves for mechanically signalled hydraulic actuators. The final aim of the work is to manufacture a new low-cost valve in replacement of the existing expensive valve with an additional leakage ...
Budinger, V. +10 more
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Failed valve-in-valve transcatheter mitral valve implantation [PDF]
European Journal of Cardio-Thoracic Surgery, 2014 A 73-year old man underwent trans-septal anterograde implantation of a 26-mm Sapien-XT valve (Edwards Lifesciences, CA, USA) to treat a degenerated 27-mm Carpentier-Edwards bioprosthesis. During the follow-up, the patient experienced severe haemolysis with moderate-to-severe inter-valvular leak, and fluoroscopy revealed possible incomplete apposition ...
Bruschi, G. +3 more
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Valve-in-valve transcatheter mitral valve replacement procedure in prosthetic valve stenosis
IHJ Cardiovascular Case Reports (CVCR), 2023 A patient presented with acute respiratory failure and shock due to severe prosthetic mitral valve stenosis. A valve-in-valve transcatheter mitral valve replacement procedure was performed via the transeptal approach due to his high-risk presentation with good results.
Mridul Bansal +3 more
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Coursing with Coils: The Only Orchestral Instrument Harder Than the French Horn
Musical Offerings, 2016 Playing the horn has become not only more sophisticated and accurate, but simpler and more efficient for the horn player. The natural horn, used in a variety ways in early history, demanded an incredible level of skill and precision, more than our valved
Sarah R. Plumley
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Bioprosthetic valve fracture during valve-in-valve transcatheter aortic valve replacement [PDF]
Baylor University Medical Center Proceedings, 2020 Transcatheter aortic valve replacement (TAVR) valve-in-valve (VIV) therapy has been approved for select patients with surgically inoperable bioprosthetic valves that need replacement. Bioprosthetic valve fracturing (BVF) used in conjunction with VIV TAVR can reduce transvalvular gradients and increase the aortic valve area.
Mohanad Hamandi +11 more
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Journal of Cardiovascular Development and Disease, 2015 Turner syndrome (TS), most frequently caused by X-monosomy (45,X), is characterized in part by cardiovascular abnormalities, including aortopathy and bicuspid aortic valve (BAV).
Robert B. Hinton +4 more
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Study on hydrodynamic numerical simulation and radical offset characteristics of outflow cone valve
The Journal of Engineering, 2018 Aiming at the complicated internal flow state of hydraulic cone valve and the effect of fluid force on the performance, radial offset was seldom considered in the research of cone valve, so the inner flow field model of cone valve was established by UG ...
Xiaojing Wang +4 more
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