Results 81 to 90 of about 448,899 (312)
Failed Valve-In-Valve Transcatheter Aortic Valve Implantation
JACC: Cardiovascular Interventions, 2012 In 2004, a 68-year-old man received aortocoronary bypass surgery and a 23-mm Hancock porcine bioprosthesis (Medtronic, Minneapolis, Minnesota). Six years later, in January 2011, cardiac re-evaluation was performed due to progressive dyspnea.
Klotz, Stefan +3 more
openaire +2 more sources
Meta‐Rod Mechanical Metamaterials With Programmable Reconfiguration
Advanced Functional Materials, EarlyView.Existing mechanical metamaterials achieve programmable large deformations in planar square or cubic configurations, restricted by required complex boundary conditions. This research proposes a 1D metamaterial, Meta‐rod, with linear, bending, twisting, area, and volume deformation modes.
Atharva Pande, Lyes Kadem, Hang Xu
wiley +1 more source
Delayed Time to Peak Velocity Is Useful for Detecting Severe Aortic Stenosis
Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2016 BackgroundTime to peak velocity (TPV) is an echocardiographic variable that can be easily measured and reflects a late peaking murmur, a classic physical finding suggesting severe aortic stenosis (AS).
Daisuke Kamimura +7 more
doaj +1 more source
Investigations of presence of antibodies against bovine herpesvirus-1 in blood serum of calves prior to colostrum diet [PDF]
Veterinarski Glasnik, 2010 The paper presents the results of investigations of the presence of the bovine herpesvirus-1 (BHV-1) in samples of blood serum from 106 cows and 107 of their calves (one cow had twins).
Lazić Sava +5 more
doaj +1 more source
2D Magnetic and Topological Quantum Materials and Devices for Ultralow Power Spintronics
Advanced Functional Materials, EarlyView.2D magnets and topological quantum materials enable ultralow‐power spintronics by combining robust magnetic order with symmetry‐protected, Berry‐curvature‐driven transport. Fundamentals of 2D anisotropy and spin‐orbit‐coupling induced band inversion are linked to scalable growth and vdW stacking.
Brahmdutta Dixit +5 more
wiley +1 more source
Actuating and Sensing Composites of Liquid Crystal Elastomers and Poly(ionic liquid)s
Advanced Functional Materials, EarlyView.Ionic conductive, mechanically tough, flexible, and stretchable filaments of a composite material comprising a liquid crystal elastomer and a poly(ionic liquid) are produced through 3D printing, which exhibit large actuation strain under stimulation and electrical resistance variation in response to deformation or environmental condition changes. Their
Zeping Liu +6 more
wiley +1 more source
Feasibility study of inlet shock stability system of YF-12 [PDF]
The feasibility of self actuating bleed valves as a shock stabilization system in the inlet of the YF-12 is considered for vortex valves, slide valves, and poppet valves. Analytical estimation of valve performance indicates that only the slide and poppet
Blausey, G. C. +2 more
core +1 more source
Reinforcing means for diaphragms Patent [PDF]
, 1967 Reinforcing beam system for highly flexible diaphragms in valves or pressure ...
Macglashan, W. F., Jr.
core +1 more source
Additive Manufacturing of NiTi Shape Memory Alloys for Elastocaloric Applications: A Review
Advanced Functional Materials, EarlyView.Additive manufacturing enables complex NiTi architectures that overcome key limitations in elastocaloric refrigeration, including poor heat transfer and high mechanical work input. This review surveys recent advances in LPBF‐ and DED‐fabricated NiTi shape memory alloys for elastocaloric applications, highlighting process–structure–performance ...
Ignatius Andre Setiawan +7 more
wiley +1 more source
Van der Waals spin valves [PDF]
, 2018 We propose spin valves where a 2D non-magnetic conductor is intercalated between two ferromagnetic insulating layers. In this setup, the relative orientation of the magnetizations of the insulating layers can have a strong impact on the in-plane ...
Cardoso, C. +3 more
core +3 more sources