نتایج جستجو برای: hydrostatic stiffness

تعداد نتایج: 51677  

2007
Yue Deng Arthur D. Richmond Aaron J. Ridley Han-Li Liu

[1] Under hydrostatic equilibrium, a typical assumption used in global thermosphere ionosphere models, the pressure gradient in the vertical direction is exactly balanced by the gravity force. Using the non-hydrostatic Global Ionosphere Thermosphere Model (GITM), which solves the complete vertical momentum equation, the primary characteristics of non-hydrostatic effects on the upper atmosphere ...

2014
Mrinal Iyer Vikram Gavini Tresa M. Pollock

Density functional theory calculations are employed to investigate the energetics of point defects—monovacancy, self-interstitials (tetrahedral, octahedral and dumbbell) and Frenkel pairs— in aluminum under tensile hydrostatic stresses. Our study suggests that the defect core-energy of a vacancy, which is governed solely by the electronic-structure at the core, significantly depends on the macr...

2011
Junyuan Gao Xiurong Sun Leon C. Moore Thomas W. White Peter R. Brink Richard T. Mathias

We recently modeled fluid flow through gap junction channels coupling the pigmented and nonpigmented layers of the ciliary body. The model suggested the channels could transport the secretion of aqueous humor, but flow would be driven by hydrostatic pressure rather than osmosis. The pressure required to drive fluid through a single layer of gap junctions might be just a few mmHg and difficult t...

Journal: :Journal of vestibular research : equilibrium & orientation 2003
Peter J Fraser Stuart F Cruickshank Richard L Shelmerdine

Following the discovery of a hydrostatic pressure sensor with no associated gas phase in the crab, and the knowledge that several systems of cells in culture show long term alterations to small changes in hydrostatic pressure, we show here that vestibular type II hair cells in a well known model system (the isolated elasmobranch labyrinth), are sensitive to hydrostatic pressure. This new findin...

Journal: :Applied sciences 2021

Orifice-restricted hydrostatic thrust bearings are broadly employed in ultra-precision machine tools, aerospace industries, and so forth. The orifice length–diameter ratio (OLDR) is one of the significant geometrical parameters orifice-restricted bearing, which directly affects performance bearing. To accurately guide design effect OLDR on bearing needs to be thoroughly scientifically investiga...

Azadbakht M Bashiri Z, Karimi N Najafi Mehr M

Effective protocols are introduced for parthenogenesis activation in oocytes. Hydrostatic pressure can act as a mechanical stimulator that rearranges egg contents, leading to new structural or molecular combination. Alternatively, mechanical stimulation could stimulate a mechanically-gated process, such as opening or closing of stretch activated ion channels. This study, investigated the use of...

Journal: :Math. Comput. 2016
Emmanuel Audusse François Bouchut Marie-Odile Bristeau Jacques Sainte-Marie

A lot of well-balanced schemes have been proposed for discretizing the classical Saint-Venant system for shallow water flows with non-flat bottom. Among them, the hydrostatic reconstruction scheme is a simple and efficient one. It involves the knowledge of an arbitrary solver for the homogeneous problem (for example Godunov, Roe, kinetic. . . ). If this solver is entropy satisfying, then the hy...

2005
Robert Lipton

Composites made from two linear isotropic elastic materials are subjected to a uniform hydrostatic stress. It is assumed that only the volume fraction of each elastic material is known. Lower bounds on all rth moments of the hydrostatic stress field inside each phase are obtained for rX2. A lower bound on the maximum value of the hydrostatic stress field is also obtained. These bounds are given...

2013
Meng Hu Zhisheng Zhao Fei Tian Artem R. Oganov Qianqian Wang Mei Xiong Changzeng Fan Bin Wen Julong He Dongli Yu Hui-Tian Wang Bo Xu Yongjun Tian

The exploration of novel functional carbon polymorphs is an enduring topic of scientific investigations. In this paper, we present simulations demonstrating metastable carbon phases as the result of pressure induced carbon nanotube polymerization. The configuration, bonding, electronic, and mechanical characteristics of carbon polymers strongly depend on the imposed hydrostatic/non-hydrostatic ...

Journal: :The British journal of ophthalmology 2000
M B Wax G Tezel S Kobayashi M R Hernandez

BACKGROUND/AIMS Mechanical forces are thought to induce cellular responses through activation of signalling pathways. Cells within the intraocular environment are exposed to constant changes in the levels of intraocular pressure. In this study, an attempt was made to determine the acute effects of elevated hydrostatic pressure on different intraocular cells grown in culture. METHODS Different...

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