نتایج جستجو برای: strut

تعداد نتایج: 2011  

Journal: :Plastic and reconstructive surgery 2015
Ketan M Patel Chih-Hung Lin

Introduction The fibula osteocutaneous flap is now commonly used to reconstruct composite mandibular defects. Difficulties in flap execution are invariably related to the dynamic relationship of the bone orientation and the skin paddle inset. Traditional design has been limited to a single-strut bony design in order to restore mandibular continuity, without restoration of mandibular height and ...

Journal: :Physical chemistry chemical physics : PCCP 2015
Christian Reece David J Willock Abbie Trewin

Varying degrees of order have been found experimentally for a series of covalent triazine-based frameworks (CTFs) when synthesised under different reaction conditions. Here, we use molecular modelling to discuss the potential origins of this structural order by analysis of the node and strut building blocks. We use a combination of small model structures based on DFT optimised monomer units and...

Journal: :Journal of the Royal Aeronautical Society 2022

Abstract This paper presents a relative fuel burn evaluation of the transonic strut-braced-wing configuration for regional aircraft class in comparison to an equivalent conventional tube-and-wing aircraft. is accomplished through multipoint aerodynamic shape optimisation based on Reynolds-averaged Navier-Stokes equations. Aircraft concepts are first developed low-order multidisciplinary design ...

Journal: :International Journal for Numerical Methods in Engineering 2022

Many materials and structures consist of numerous slender struts or fibers. Due to the manufacturing processes different types growth natural fibers, their mechanical response frequently fluctuates from strut strut, as well locally within each strut. In associated models is often represented by a string beam elements, since use conventional 3D finite elements renders simulations computationally...

Journal: :Additive manufacturing 2021

Strut-based lattice structures produced by powder bed fusion are prone to characteristic manufacturing defects that alter both their form and surface texture. Most studies in the literature focus on a subset of commonly observed defects, typically radius variation strut waviness; remain relatively unexplored. Furthermore, there remains need for development general finite element modelling frame...

2002
G. Dinesh kumar D. Gowri Shankar D. Balaji

The high performance and instability in combustion chamber are the most challenging requirements for faster developments and technical advances in most of the engines. The design and development challenges of such engines are highly influenced by its combustion behavior taking place inside the combustion chamber. Studies on the injection, vaporization and combustion phenomena inside combustion ...

Journal: :Circulation. Cardiovascular interventions 2010
Giulio Guagliumi Vasile Sirbu Giuseppe Musumeci Hiram G Bezerra Alessandro Aprile Hiroyuki Kyono Luigi Fiocca Aleksandre Matiashvili Nikoloz Lortkipanidze Angelina Vassileva Jeffrey J Popma Dominic J Allocco Keith D Dawkins Orazio Valsecchi Marco A Costa

BACKGROUND Polymer-coated drug-eluting stents are effective in preventing restenosis but have been associated with delayed healing and incomplete strut coverage. It is unknown whether paclitaxel-eluting stents (PES) with minimal biodegradable abluminal coating enhances strut coverage while preventing neointimal hyperplasia. Using optical coherence tomography (OCT) as a primary imaging modality,...

Journal: :BioMedical Engineering OnLine 2008
Frank JH Gijsen Francesco Migliavacca Silvia Schievano Laura Socci Lorenza Petrini Attila Thury Jolanda J Wentzel Anton FW van der Steen Patrick WS Serruys Gabriele Dubini

BACKGROUND The process of restenosis after a stenting procedure is related to local biomechanical environment. Arterial wall stresses caused by the interaction of the stent with the vascular wall and possibly stress induced stent strut fracture are two important parameters. The knowledge of these parameters after stent deployment in a patient derived 3D reconstruction of a diseased coronary art...

Journal: :Circulation. Cardiovascular interventions 2016
Johan Bennett Maarten Vanhaverbeke Nina Vanden Driessche Tom Adriaenssens Nick Hiltrop Walter Desmet Peter Sinnaeve Christophe Dubois

BACKGROUND Although bioresorbable scaffolds offer potential advantages compared with metallic drug-eluting stents in the treatment of complex coronary bifurcation lesions, there are concerns that the polymeric scaffold integrity may be compromised. This in vivo study sought to provide insights about the feasibility of performing complex bifurcation stenting with Absorb bioresorbable vascular sc...

1999
Nikhil M. Rao Clint L. Dancey Ricardo D. Burdisso

i Reduction of Unsteady Stator – Rotor Interaction by Trailing Edge Blowing Using MEMS Based Microvalves by Nikhil M. Rao Dr. W.F. Ng, Chairman Mechanical Engineering (ABSTRACT) This research performs an experimental study of a trailing edge blowing system that can adapt to variations in flow parameters and reduce the unsteady stator-rotor interaction at all engine operating conditions. The fan...

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