نتایج جستجو برای: convergent wall

تعداد نتایج: 191885  

Journal: :Computers & mathematics with applications 2021

In this paper, the Pseudo shock structure in a convergent–long divergent duct is investigated using large eddy simulation on basis of Smagorinsky–Lilly,​ Wall-Adapting Local Eddy-Viscosity and Algebraic Wall-Modeled LES subgrid models. The first objective study to apply different models predict Lambda form shocks system, while ultimate aim obtain further control behavior. To achieve these goals...

Journal: :The European physical journal. E, Soft matter 2015
Benjamin Dollet Claire Bocher

We study experimentally the flow of a foam confined as a bubble monolayer between two plates through a convergent channel. We quantify the velocity, the distribution and orientation of plastic events, and the elastic stress, using image analysis. We use two different soap solutions: a sodium dodecyl sulfate (SDS) solution, with a negligible wall friction between the bubbles and the confining pl...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علم و صنعت ایران 1380

در این پایان نامه خواص و جنبه های مختلف کربن معرفی و مروری کلی بر روشهای ساخت ، ساختار و خواص انواع مختلف کربن از کربنهای bulk(شامل گرافیت ، گرافیت turbostratic، الیاف کربن، دوده هاو ... ) تا کربنهای نانومقیاس (شامل fullerenes ، کپسولهای نانومقیاس ، کربنهای nanotube و ... ) ارائه می شود. عمده کار متوجه کربنهای nanotube(اعم از multi-wall و single-wall ) است و ساختار ، عیوب شبکه ای و روشهای ساخت ...

2016
Matthew J. Burch Chris M. Fancher Srikanth Patala Elizabeth C. Dickey

A ferroelectric material’s permittivity is dependent on the extrinsic contribution of domain wall displacement during the application of an external field, which can involve the motion of both 90° and 180° domain walls. Directly quantifying non-180° domain structures through diffraction based techniques is generally straightforward; as the diffraction condition will be different from one side o...

Journal: :Linear Algebra and its Applications 1999

Journal: :Physical review letters 2000
M Zajac G L Jones J A Glazier

We argue that energy minimization can explain the pattern of cell movements in the morphogenetic process known as convergent extension provided that the cell-cell adhesive energy has a certain type of anisotropy, which we describe. This single simple property suffices to cause the cell elongation, cell alignment, and lengthening of a cellular array that characterize convergent extension. We sho...

Journal: :Developmental cell 2002
John B Wallingford Scott E Fraser Richard M Harland

During development, vertebrate embryos undergo dramatic changes in shape. The lengthening and narrowing of a field of cells, termed convergent extension, contributes to a variety of morphogenetic processes. Focusing on frogs and fish, we review the different cellular mechanisms and the well-conserved signaling pathways that underlie this process.

Journal: :Mechanisms of Development 2003
Beate Kilian Hannu Mansukoski Filipa Carreira Barbosa Florian Ulrich Masazumi Tada Carl-Philipp Heisenberg

Wnt genes play important roles in regulating patterning and morphogenesis during vertebrate gastrulation. In zebrafish, slb/wnt11 is required for convergence and extension movements, but not cell fate specification during gastrulation. To determine if other Wnt genes functionally interact with slb/wnt11, we analysed the role of ppt/wnt5 during zebrafish gastrulation. ppt/wnt5 is maternally prov...

Journal: :Heart Rhythm 2023

Pulmonary vein isolation (PVI) is the cornerstone treatment for management of atrial fibrillation (AF). However, patients with persistent AF often require additional ablation strategies to improve clinical outcomes and freedom from AF. The CONVERGENT procedure which combined epicardial endocardial approach ablation, offers improved efficacy in who have longstanding refractory prior ablation. We...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2013
Haibao Tang Hugo E Cuevas Sayan Das Uzay U Sezen Chengbo Zhou Hui Guo Valorie H Goff Zhengxiang Ge Thomas E Clemente Andrew H Paterson

Suppression of seed shattering was a key step during crop domestication that we have previously suggested to be convergent among independent cereal lineages. Positional, association, expression, and mutant complementation data all implicate a WRKY transcription factor, SpWRKY, in conferring shattering to a wild sorghum relative, Sorghum propinquum. We hypothesize that SpWRKY functions in a mann...

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