نتایج جستجو برای: روش sph تراکم پذیر

تعداد نتایج: 388060  

2000
Matthew R. Bate

The Smoothed Particle Hydrodynamics (SPH) numerical method was introduced by Lucy [20] and Gingold and Monaghan [21]. Its first application was in the field of star formation, where it was used to study whether or not a rapidly-rotating polytrope could undergo fission to form a close binary system [20, 22]. Since this initial application, SPH has been widely used in the study of star formation,...

2014
Hossam M. Abdallah Ahmed M. Al-Abd Gihan F. Asaad Ashraf B. Abdel-Naim Ali M. El-halawany

Chemical investigation of Sophora japonica seeds resulted in the isolation of seven metabolites identified as: genistin (1), sophoricoside (2), sophorabioside (3), sophoraflavonoloside (4), genistein 7,4'-di-O-β-D-glucopyransoide (5), kaempferol 3-O-α-L-rhamnopyranosyl(1 → 6)β-D-glucopyranosyl(1 → 2)β-D-glucopyranoside (6) and rutin (7). Compounds 1, 2 and 5 showed significant estrogenic prolif...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه زابل - دانشکده فنی 1392

درک پدیده های طبیعی که در اطراف بشر به وقوع می پیوندند از دیرباز دارای اهمیت زیادی بوده است. از این رو همواره محققان در تلاش بوده اند تا با یافتن قوانین حاکم بر این پدیده ها به کنترل آنها پرداخته و به نحو مطلوب از آنها در جهت رشد و توسعه ی زندگی بشر استفاده نمایند. یکی از این پدیده ها که پیچیدگی های خاصی نیز دارد پدیده ی رسوب و انتقال آن در رودخانه و دریا است. اطلاعات دقیق از فرسایش، انتقال و ر...

Journal: :Comput. Graph. Forum 2014
Jens Cornelis Markus Ihmsen Andreas Peer Matthias Teschner

We propose to use Implicit Incompressible Smoothed Particle Hydrodynamics (IISPH) for pressure projection and boundary handling in Fluid-Implicit-Particle (FLIP) solvers for the simulation of incompressible fluids. This novel combination addresses two issues of existing SPH and FLIP solvers, namely mass preservation in FLIP and efficiency and memory consumption in SPH. First, the SPH component ...

2009
Markus Becker Markus Ihmsen Matthias Teschner

Smoothed Particle Hydrodynamics (SPH) is a powerful technique for the animation of natural phenomena. While early SPH approaches in Computer Graphics have mainly been concerned with liquids or gases, recent research also focuses on the dynamics of deformable solids using SPH. In this paper, we present a novel corotational SPH formulation for deformable solids. The rigid body modes are extracted...

2014
NIKOLAUS ADAMS XIANGYU HU Nikolaus Adams

Submitted for the DFD14 Meeting of The American Physical Society Towards numerical consistency and conservation for SPH approximations NIKOLAUS ADAMS, XIANGYU HU, SERGEJ LITVINOV, Technische Universität München — Typical conservative Smoothed particle hydrodynamics (SPH) approximations introduce two errors: smoothing error is due to smoothing of the gradient by an integration associated with a ...

Journal: :Blood 2001
N J Wandersee A N Roesch N R Hamblen J de Moes M A van der Valk R T Bronson J A Gimm N Mohandas P Demant J E Barker

Mutations affecting the conversion of spectrin dimers to tetramers result in hereditary elliptocytosis (HE), whereas a deficiency of human erythroid alpha- or beta-spectrin results in hereditary spherocytosis (HS). All spontaneous mutant mice with cytoskeletal deficiencies of spectrin reported to date have HS. Here, the first spontaneous mouse mutant, sph(Dem)/ sph(Dem), with severe HE is descr...

2015
Chukwuma O Ekpebegh Benjamin Longo-Mbenza

Background: There are few published reports on the clinical characteristics of auto-immune thyroid disease in the African. Objectives: To assess the clinical features Thyrotropin Receptor (TR) and Thyroid Peroxidase (TPO) antibodies in Toxic Graves’ and Spontaneous Primary Hypothyroidism (SPH). Methods: Cross sectional study of black African patients with Toxic Graves’ and SPH attending an Endo...

2016
Kamil Szewc Katarzyna Walczewska-Szewc Michal Olejnik

In recent years the Smoothed Particle Hydrodynamics (SPH) approach gained popularity in modeling multiphase and free-surface flows. In many situations, due to certain reasons, interface and free-surface fragmentation occurs. As a result single SPH particle solids/droplets of one phase can appear and travel through other phases. In this paper we investigate this issue focusing on a movement of s...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 1999
H Hida S Nagano M Takeda B Soliven

Sphingolipid products such as ceramide (cer), sphingosine (sph), and sphingosine-1-phosphate (SPP) are implicated in the regulation of cell growth and apoptosis. We have recently shown that cer, sph, and SPP differentially modulate ionic events in cultured oligodendrocytes (OLGs). Cer but not sph or SPP inhibits the inward rectifier (I(Kir)) in OLGs. To further investigate the role of sphingoli...

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