Results 61 to 70 of about 1,309,474 (364)

Transfemoral transcatheter valve-in-valve-in-valve replacement [PDF]

The Journal of Thoracic and Cardiovascular Surgery, 2016
From the Divisions of Cardiovascular Surgery and Cardiovascular Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pa. Disclosures: Authors have nothing to disclose with regard to commercial support. Received for publication Dec 16, 2015; revisions received Feb 11, 2016; accepted for publicationMarch 14, 2016; available ...
Prashanth Vallabhajosyula, Stephane Leung Wai Sang, Jay Giri   +2 more
openaire   +2 more sources

Enhancing Corrosion Resistance and Mechanical Strength of 3D‐Printed Iron Polylactic Acid for Marine Applications via Laser Surface Texturing

Advanced Engineering Materials, EarlyView.
Laser surface texturing significantly improves the corrosion resistance and mechanical strength of 3D‐printed iron polylactic acid (Ir‐PLA) for marine applications. Optimal laser parameters reduce corrosion by 80% and enhance tensile strength by 25% and ductility by 15%.
Mohammad Rezayat, Mojtaba Karamimoghadam, Mohammadreza Lalegani Dezaki, Ali Zolfagharian, Giuseppe Casalino, Antonio Mateo, Mahdi Bodaghi   +6 more
wiley   +1 more source

Tricuspid valve replacement provides better long-term survival and tricuspid valve function than repair in patients with systemic right ventricleCentral MessagePerspective

JTCVS Open, 2023
Objective: The purpose of this study is to compare the long-term outcomes of 2 different tricuspid surgeries including valvuloplasty and replacement for significant tricuspid regurgitation in patients with systemic right ventricle.
Akihisa Furuta, MD, PhD, Takeshi Shinkawa, MD, PhD, Satoshi Okugi, MD, Hisashi Yoshida, MD, Hiroshi Niinami, MD, PhD   +4 more
doaj  

Development of Aluminum Scandium Alloys for Hydrogen Storage Valves

Advanced Engineering Materials, EarlyView.
Different aluminum alloy series and various aluminum‐scandium alloys with differing Sc and Zr levels are evaluated for use in hydrogen storage valve production. The alloys undergo hardness testing, optical microscopy, and tensile strength analysis, with hardening behavior studied under varying conditions.
Francisco García‐Moreno, Tillmann Robert Neu, Markus Eberl, Paul Hans Kamm, Hans‐Wolfgang Seeliger   +4 more
wiley   +1 more source

Association Between Transcatheter Aortic Valve Replacement for Bicuspid vs Tricuspid Aortic Stenosis and Mortality or Stroke.

Journal of the American Medical Association (JAMA), 2019
Importance Transcatheter aortic valve replacement (TAVR) indications are expanding, leading to an increasing number of patients with bicuspid aortic stenosis undergoing TAVR.
R. Makkar, Sung-Han Yoon, M. Leon, T. Chakravarty, M. Rinaldi, P. Shah, E. Skipper, V. Thourani, V. Babaliaros, W. Cheng, A. Trento, S. Vemulapalli, S. Kapadia, S. Kodali, M. Mack, G. Tang, T. Kaneko   +16 more
semanticscholar   +1 more source

Combining Metal Additive Manufacturing and Casting Technology: High Performance Cooling Channels for Electric Powertrain Components

Advanced Engineering Materials, EarlyView.
When realized as inserts in high‐pressure die casting, aluminum cooling channels for electric powertrain components and similar applications typically require a stabilizing filler to survive the process. The present study investigates relinquishing this filler using additively manufactured inserts promising performance improvements.
Dirk Lehmhus, Gefei Li, Martin Czekalla, Leonardo Fernandes Gomes, Christoph Pille, Hermann Pleteit, Adrian Struss, Keno Toussaint, Andre Irretier, Münip Dalgic   +9 more
wiley   +1 more source

Two-year outcomes after transcatheter or surgical aortic-valve replacement.

New England Journal of Medicine, 2012
BACKGROUND The Placement of Aortic Transcatheter Valves (PARTNER) trial showed that among high-risk patients with aortic stenosis, the 1-year survival rates are similar with transcatheter aortic-valve replacement (TAVR) and surgical replacement. However,
S. Kodali, Mathew R. Williams, Craig R. Smith, L. Svensson, J. Webb, R. Makkar, G. Fontana, T. Dewey, V. Thourani, A. Pichard, M. Fischbein, W. Szeto, Scott Lim, K. Greason, P. Teirstein, S. Malaisrie, P. Douglas, R. Hahn, B. Whisenant, A. Zajarías, Duolao Wang, J. Akin, W. Anderson, M. Leon, T. Investigators   +24 more
semanticscholar   +1 more source

Microstructural and Mechanical Properties of a Hard Anodic Coating Applied on an Elastically Prestrained Aluminum Substrate

Advanced Engineering Materials, EarlyView.
Prestraining the substrate influences coating formation process. Higher prestraining force leads to higher coating thickness and lower hardness. Increase in prestraining force enhances preliminary damage in hard anodic coating. Fatigue damage mechanisms change for hard anodized prestrained samples.
Linto George Thomas, Lisa Winter, Frank Simchen, Tobias Breitfeld, Thomas Lampke   +4 more
wiley   +1 more source

Procedural Volume and Outcomes for Transcatheter Aortic-Valve Replacement.

New England Journal of Medicine, 2019
BACKGROUND During the introduction of transcatheter aortic-valve replacement (TAVR) in the United States, requirements regarding procedural volume were mandated by the Centers for Medicare and Medicaid Services as a condition of reimbursement.
S. Vemulapalli, J. Carroll, M. Mack, Zhuokai Li, David Dai, A. Kosinski, D. Kumbhani, C. Ruiz, V. Thourani, G. Hanzel, T. Gleason, H. Herrmann, R. Brindis, J. Bavaria   +13 more
semanticscholar   +1 more source

Electronic Control System for Optimized Resonance Operation of Dielectric Elastomer Pumps through Self‐Sensing

Advanced Engineering Materials, EarlyView.
A powerful electronic control system enables a dielectric elastomer pump to operate at resonance, matching conventional pump performance. Using self‐sensing to reconstruct load pressure dynamically, the adaptive control adjusts resonance frequency accordingly.
Matthias Baltes, Benedikt Holz, Daniel Bruch, Paul Motzki   +3 more
wiley   +1 more source