Results 51 to 60 of about 156,828 (341)
Transcatheter aortic valve replacement
Research Reports in Clinical Cardiology, 2013 Anneke Damberg, Carina Benstoem, Ruediger Autschbach, Andreas GoetzenichDepartment of Cardiovascular and Thoracic Surgery, University Clinic RWTH Aachen, Aachen, GermanyAbstract: The standard treatment for symptomatic severe aortic valve stenosis is ...
Damberg A +3 more
doaj
Double Helical Plasmonic Antennas
Advanced Functional Materials, EarlyView.Plasmonic double helical antennas funnel circularly polarized light to the nanoscale, offering strong chiroptical interaction and directional light emission. Extending a single helix design tool, this study combines numerical modeling with experimental validation, revealing large, broadband dissymmetry factors in the visible range.
Aleksei Tsarapkin +7 more
wiley +1 more source
Nitrogen Precooling Heat Exchanger replacement and control system upgrade in Superfluid Cryoplant at CMTF [PDF]
arXiv, 2023 Liquid Nitrogen precooling is used in most Cryoplants to achieve cooldown to 80 K temperature range. In one such system at Fermilab's CMTF Superfluid Cryoplant, where the Helium supply directly exchanges heat with liquid Nitrogen, freezing of Nitrogen occurred inside the heat exchanger due to heat exchanger imbalance during a Cryoplant trip.
arxiv
Advanced Healthcare Materials, EarlyView.Segmented PCL‐bisurea (BU) polymers and BU‐peptide conjugate additives assemble into fibrous superstructures at the nanoscale through a mix‐and‐matching strategy. Different bioactivities are incorporated through variation of peptide sequences. The resulting materials are screened for their effect on stem cell adhesion and pluripotency.
Johnick F. van Sprang +6 more
wiley +1 more source
Successful Management of Myval Transcatheter Heart Valve Embolization Into Abdominal Aortic Aneurysm During Transcatheter Aortic Valve Replacement [PDF]
Texas Heart Institute JournalTranscatheter heart valve embolization is a serious and rare complication of transcatheter aortic valve replacement. Having a strategy for promptly managing transcatheter heart valve embolization is crucial to avoid emergency conversion from ...
Artemio García-Escobar, MD +5 more
doaj +1 more source
A novel mathematical technique to assess of the mitral valve dynamics based on echocardiography [PDF]
arXiv, 2015 Purpose: The mechanics of the mitral valve leaflet as a nonlinear, inelastic and anisotropic soft tissue results from an integrated response of many mathematical/physical indexes' that illustrate the tissue. In the past decade, finite element modeling of complete heart valves has greatly aided evaluation of heart valve surgery, design of bioprosthetic ...
arxiv
Tensor damping in metallic magnetic multilayers [PDF]
, 2009 The mechanism of spin-pumping, described by Tserkovnyak et al., is formally analyzed in the general case of a magnetic multilayer consisting of two or more metallic ferromagnetic (FM) films separated by normal metal (NM) layers. It is shown that the spin-pumping-induced dynamic coupling between FM layers modifies the linearized Gilbert equations in a ...
arxiv +1 more source
Modeling the Mitral Valve [PDF]
arXiv, 2022 This thesis is concerned with modeling and simulation of the mitral valve, one of the four valves in the human heart. The valve is composed of leaflets attached to a ring, the free edges of which are supported by a system of chordae, which themselves are anchored to muscles inside the heart.
arxiv
Redo Mitral Valve Replacement After Valve-in-Valve Transcatheter Mitral Valve Replacement
Cureus, 2023 The rising preference for percutaneous mitral valve-in-valve replacement (ViV TMVR) over redo surgical mitral valve replacement (MVR) is primarily due to its reduced bleeding risk. This report details a bloodless redo MVR performed for mitral stenosis post-ViV TMVR.
Tsukioka, Yusuke, Jeevanandam, Valluvan
openaire +1 more source
Motor‐Free Soft Robots for Cancer Detection, Surgery, and In Situ Bioprinting
Advanced Healthcare Materials, EarlyView.Novel motor‐free soft robots for cancer detection, surgery, and in situ bioprinting–are presented. This master‐slave system is constructed from soft fibrous syringe architectures, removing the need for electrical motors and complex control mechanisms, while reducing the physical tremors.
Chi Cong Nguyen +17 more
wiley +1 more source