Results 71 to 80 of about 127,723 (268)
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
Advanced Functional Materials, EarlyView.A dynamically actuated reconfigurable topographical surface (DARTS) integrates contact‐mediated bactericidal nanotopography with programmable mechanical actuation to actively disrupt bacterial biofilms. Dynamic surface reconfiguration enhances bacterial killing and suppresses implant‐associated infections in vivo, providing a new strategy for active ...
Mohammad Asadi Tokmedash +4 more
wiley +1 more source
The Journal of Engineering, 2019 Aiming at the problem of the detect and rescue in the coal mine with the leaking vas, a type of pneumatic hexapod explored robot which uses a high pressure nitrogen cylinder as the power producer is designed.
Long Bai +4 more
doaj +1 more source
Advanced Functional Materials, EarlyView.The physical realization of artificial neurons is a critical challenge for energy‐efficient neuromorphic computing. This review presents a comprehensive analysis of the evolution of artificial neuron implementations from conventional CMOS to emerging post‐CMOS technologies.
Kannan Udaya Mohanan +4 more
wiley +1 more source
Anaesthesia gas supply: Gas cylinders
Indian Journal of Anaesthesia, 2013 Invention of oxygen cylinder was one of the most important developments in the field of medical practice. Oxygen and other gases were compressed and stored at high pressure in seamless containers constructed from hand-forged steel in1880.
Uma Srivastava
doaj +1 more source
Hybrid valve-in-valve mitral valve replacement [PDF]
JTCVS Techniques, 2020 Harloff, Morgan T. +3 more
openaire +2 more sources
Engineered Nanotopography to Modulate Growth and Signaling of Neuronal Networks
Advanced Functional Materials, EarlyView.This study examines the interaction between neurons and nanoscale topographies on engineered substrates. Neurons cultured on nanowires, nanopillars and nanoneedles exhibit enhanced neurite outgrowth, form more organized neuronal circuits, and display improved synaptic connectivity, compared to flat substrates.
Hao Nguyen Tran +8 more
wiley +1 more source
Wave-to-Wire Model Development and Validation for Two OWC Type Wave Energy Converters
Energies, 2019 The Tupperwave device is a closed-circuit oscillating water column (OWC) wave energy converter that uses non-return valves and two large fixed-volume accumulator chambers to create a smooth unidirectional air flow, harnessed by a unidirectional turbine ...
Pierre Benreguig +3 more
doaj +1 more source
Advanced Functional Materials, EarlyView.A hybrid additive manufacturing platform integrates direct droplet writing of metallic composite with VAT photopolymerization to fabricate architected soft magnetic composites. This approach enables microscale patterning of high‐viscosity materials for programmable actuators, adaptive fluidic devices, and switchable adhesives, offering tunable ...
Yeowon Yoon +4 more
wiley +1 more source
CONSTITUTIONAL FEATURES OF HEART VALVES IN WOMEN AT A MATURE AGE
Вестник хирургии имени И.И. Грекова, 2016 The researches of morphometric parameters of the heart valves were performed in 315 female corpses of asthenic, normosthenic and hypersthenic constitutions. Statistically meaningful differences were revealed in the perimeter of the fibrous ring circle of
D. A. Starchik
doaj +1 more source