نتایج جستجو برای: squeeze flow

تعداد نتایج: 484505  

2017
Yang Zhao Liansheng Zhang Yong Zhang Rongjun Cheng

In dynamic plowing lithography, the sample surface is indented using a vibrating tip in tapping mode atomic force microscopy. During writing, the gap between the cantilever and the sample surface is very small, usually on the order of micrometers. High vibration frequency and small distance induce squeeze film air damping from the air in the gap. This damping can cause variations in the cantile...

2000
Renato Pajarola Jarek Rossignac

An ideal triangle mesh compression technology would simultaneously support the following three objectives: (1) progressive refinements of the received mesh during decompression, (2) nearly optimal compression ratios for both geometry and connectivity, and (3) in-line, real-time decompression algorithms for hardware or software implementations. Because these three objectives impose contradictory...

Journal: :Cell 2003
Douglas W. Allan Susan E.St. Pierre Irene Miguel-Aliaga Stefan Thor

Individual neurons express only one or a few of the many identified neurotransmitters and neuropeptides, but the molecular mechanisms controlling their selection are poorly understood. In the Drosophila ventral nerve cord, the six Tv neurons express the neuropeptide gene FMRFamide. Each Tv neuron resides within a neuronal cell group specified by the LIM-homeodomain gene apterous. We find that t...

Journal: :Journal of physics. Condensed matter : an Institute of Physics journal 2013
B Lorenz B A Krick N Rodriguez W G Sawyer P Mangiagalli B N J Persson

We present experimental data for the static or breakloose friction for lubricated elastomer contacts, as a function of the time of stationary contact. Due to fluid squeeze-out from the asperity contact regions, the breakloose friction force increases continuously with the time of stationary contact. We consider three different cases: (a) PDMS rubber balls against flat smooth glass surfaces, (b)...

2017
JiHyeong Ryu Ho Lee Sang-Ho Lee HyungJun Lim JaeJong Lee

A numerical method using the modified squeeze model is proposed in this paper in order to overcome the limitation of the established squeeze equation and obtain filling ratios for nanoimprint lithography (NIL). Because the imprinting velocity is overestimated when the ratio of indenter width to polymer thickness is close to unity, the modified equation is critical. For verification, the numeric...

Journal: :The Analyst 2015
Balpreet Singh Ahluwalia Peter McCourt Ana Oteiza James S Wilkinson Thomas R Huser Olav Gaute Hellesø

Red blood cells squeeze through micro-capillaries as part of blood circulation in the body. The deformability of red blood cells is thus critical for blood circulation. In this work, we report a method to optically squeeze red blood cells using the evanescent field present on top of a planar waveguide chip. The optical forces from a narrow waveguide are used to squeeze red blood cells to a size...

2011
S. Redaelli M. Lamont G. Müller R. Steinhagen J. Wenninger

The energy ramp and the betatron squeeze at the CERN Large Hadron Collider (LHC) are particularly critical operational phases that involve the manipulation of beams well above the safe limit for damage of accelerator components. In particular, the squeeze is carried out at top energy with reduced quench limit of superconducting magnets and reduced aperture in the triplet quadrupoles. In 2010, t...

Journal: :J. Economic Theory 2007
Siwan Anderson

It has been argued that rising dowry payments are caused by population growth. According to that explanation, termed the `marriage squeeze', a population increase leads to an excess supply of brides since men marry younger women. As a result, dowry payments rise in order to clear the marriage market. The explanation is essentially static; unmarried brides do not re-enter the marriage market. Th...

Journal: :Gut 1991
M Papachrysostomou N R Binnie A N Smith

Thirteen patients with faecal incontinence and 26 control subjects were studied to investigate whether a quantitative electromyographic (EMG) signal could be correlated to anal manometry. Three different electrodes were used--a concentric needle electrode, a disposable sponge electrode, and a hard anal plug electrode. The maximum amplitude of the EMG recording was used as a quantitative paramet...

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