نتایج جستجو برای: mesh contraction

تعداد نتایج: 102445  

2016
Li Jian Wang Zhenlong

Using jet propulsion, squid can swim at high speed or at low speed with good maneuverability, which makes them quiet valuable to be studied for biomimetic purposes. Vortex rings usually occur in the highly-unsteady jet flow in squid, and they play quite important roles in the jet propulsion of squid. This paper tries to investigate the squid jet structure by computational fluid dynamics (CFD) a...

Journal: :physiology and pharmacology 0
azar hosseini research center of medicinal plants, dept. of pharmacology, school of medicine, mashhad university of medical sciences, mashhad reza shafiee-nick research center of medicinal plants, dept. of pharmacology, school of medicine, mashhad university of medical sciences, mashhad heydar parsaee research center of medicinal plants, dept. of pharmacology, school of medicine, mashhad university of medical sciences, mashhad hamid sadeghian research center of medicinal plants, dept. of pharmacology, school of medicine, mashhad university of medical sciences, mashhad

introduction: it was shown in a previous study, that mcpip, a cilostamide derivative, increased atrial contraction force without changing contraction rate. to improve this property, two new derivatives of cilostamide were synthesized and their effects on pde3 activity and isolated rat atria contraction were investigated. methods: the inhibitory effect of each compound on pde3 enzyme was determi...

Journal: :thrita 0
zahra malekpour department of oral and maxillofacial surgery, islamic azad university, dental branch of tehran, tehran, ir iran; department of oral and maxillofacial surgery, islamic azad university, dental branch of tehran, tehran, ir iran. tel: +98-9127079744 farzin sarkarat department of oral and maxillofacial surgery, islamic azad university, dental branch of tehran, tehran, ir iran hooman hooshangi department of oral and maxillofacial surgery, islamic azad university, dental branch of tehran, tehran, ir iran

conclusions using 3d ct scan to produce a prototype and reconstruct the mandible with a custom-made ti-mesh tray was useful. patient was followed up for 14 months. mandibular deviation was largely corrected. there was no complication in the donor site. no sign of extra or intra oral fistula, dehiscence or infection was detected. ti-mesh technique has three major advantages over other methods: i...

Journal: :American journal of physiology. Heart and circulatory physiology 2013
Andrea Moriondo Eleonora Solari Cristiana Marcozzi Daniela Negrini

The spontaneous contractility of FITC-dextran-filled lymphatics at the periphery of the pleural diaphragm was documented for the first time "in vivo" in anesthetized Wistar rats. We found that lymphatic segments could be divided into four phenotypes: 1) active, displaying rhythmic spontaneous contractions (51.8% of 197 analyzed sites); 2) stretch-activated, whose contraction was triggered by pa...

2015
John F. LaDisa Serdar Bozdag Jessica Olson Ramani Ramchandran Judy R. Kersten Thomas J. Eddinger Francisco J. Esteban

Coarctation of the aorta (CoA) is a constriction of the proximal descending thoracic aorta and is one of the most common congenital cardiovascular defects. Treatments for CoA improve life expectancy, but morbidity persists, particularly due to the development of chronic hypertension (HTN). Identifying the mechanisms of morbidity is difficult in humans due to confounding variables such as age at...

1999
C. Walshaw M. Cross R. Diekmann F. Schlimbach

Multilevel algorithms are a successful class of optimisation techniques which address the mesh partitioning problem for mapping meshes onto parallel computers. They usually combine a graph contraction algorithm together with a local optimisation method which refines the partition at each graph level. To date these algorithms have been used almost exclusively to minimise the cut-edge weight in t...

1998
C. Walshaw M. Cross R. Diekmann F. Schlimbach

Multilevel algorithms are a successful class of optimisation techniques which address the mesh partitioning problem for mapping meshes onto parallel computers. They usually combine a graph contraction algorithm together with a local optimisation method which refines the partition at each graph level. To date these algorithms have been used almost exclusively to minimise the cut-edge weight in t...

Journal: :Computer methods in applied mechanics and engineering 2005
Yongjie Zhang Chandrajit Bajaj Bong-Soo Sohn

This paper describes an algorithm to extract adaptive and quality 3D meshes directly from volumetric imaging data. The extracted tetrahedral and hexahedral meshes are extensively used in the Finite Element Method (FEM). A top-down octree subdivision coupled with the dual contouring method is used to rapidly extract adaptive 3D finite element meshes with correct topology from volumetric imaging ...

Journal: :SIAM J. Scientific Computing 2014
Hsueh-Chen Lee

We implemented an adaptively refined least-squares finite element approach for the Navier–Stokes equations that govern generalized Newtonian fluid flows using the Carreau model. To capture the flow region, we developed an adaptive mesh refinement approach based on the leastsquares method. The generated refined grids agree well with the physical attributes of the flows. We also proved that the l...

2005
Yongjie Zhang Chandrajit Bajaj Bong-Soo Sohn

This paper describes an algorithm to extract adaptive and quality 3D meshes directly from volumetric imaging data. The extracted tetrahedral and hexahedral meshes are extensively used in the finite element method (FEM). A top-down octree subdivision coupled with a dual contouring method is used to rapidly extract adaptive 3D finite element meshes with correct topology from volumetric imaging da...

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