نتایج جستجو برای: lubrication

تعداد نتایج: 5818  

2009
Y. F. Hsiao Y. S. Tarng

To determine the lubrication oil consumption change of linear motion guide under some mileage, this study designs a test machine to fasten the linear motion guide. The grey prediction model GM(1,1) and neural network are employed for comparison and exploration. Through this study we can understand the differences in prediction of lubrication oil consumption between neural network and grey theor...

2009
Robin Abraham Koshy Michael E. Graham Laurence D. Marks

a r t i c l e i n f o Keywords: Lubricous oxides Hard coatings Lubricious oxides High temperature lubrication High temperature friction Temperature activated lubrication Multilayer coatings CrN/Mo 2 N In-situ lubrication Nanolayers Multilayered coatings Tool coatings Self lubrication Multi-layers Magnetron Sputtering Reactive sputtering CrN Mo 2 N CrN/Mo 2 N multilayers were deposited and TEM, ...

Journal: :Soft matter 2016
Raya Sorkin Nir Kampf Linyi Zhu Jacob Klein

Measurements of normal and shear (frictional) forces between mica surfaces across small unilamellar vesicle (SUV) dispersions of the phosphatidylcholine (PC) lipids DMPC (14:0), DPPC (16:0) and DSPC (18:0) and POPC (16:0, 18:1), at physiologically high pressures, are reported. We have previously studied the normal and shear forces between two opposing surfaces bearing PC vesicles across pure wa...

2014
Lallit Anand Li-Wen Lin

In the pleural space, sliding between the lung and chest wall induces shear stress that could damage the delicate mesothelial cells covering the tissue surfaces. Normally, the pleural space, which is filled with fluid, is able to sustain continuous shear loading throughout its lifetime. To understand the mechanisms in preventing frictional damage on mesothelial tissue, we conducted experiments ...

2005
Fredrik Sahlin FREDRIK SAHLIN

Interacting surfaces are frequently found in mechanical systems and components. A lubricant is often added between the surfaces to separate them from mechanical contact in order to increase life and performance of the contacting surfaces. In this work various aspects of hydrodynamic lubrication are investigated theoretically. This is where interacting surfaces are completely separated by a flui...

2012
Zhenhua Hu Meiling Liao Yinghui Chen Yunpeng Cai Lele Meng Yajun Liu Nan Lv Zhenguo Liu Weien Yuan

BACKGROUND Silicone oil, as a major component in conditioner, is beneficial in the moisture preservation and lubrication of hair. However, it is difficult for silicone oil to directly absorb on the hair surface because of its hydrophobicity. Stable nanoemulsions containing silicone oil may present as a potential solution to this problem. METHODS Silicone oil nanoemulsions were prepared using ...

1998
David Bercovici

The formation of plate tectonics from mantle convection necessarily requires nonlinear rheological behavior. Recent studies suggest that self-lubricating rheological mechanisms are most capable of generating plate-like motion out of fluid flows. The basic paradigm of self-lubrication is nominally derived from the feedback between viscous heating and Ž temperature-dependent viscosity. Here, we p...

Journal: :Anesthesiology 2001
M C Blunt P J Young A Patil A Haddock

BACKGROUND Leakage of fluid occurs along the longitudinal folds within the wall of an inflated high-volume, low-pressure cuff. Theoretically, lubrication of the cuff with a water-soluble gel might prevent aspiration by plugging the channels in the cuff wall. Pulmonary aspiration during anesthesia has been linked with postoperative pneumonia and during critical illness causes ventilator-associat...

2017
Yongfeng Jiang Min Wang Thomas Schuelke

Plasma electrolytic boriding (PEB) is a method of combination surface strengthening and surface texturing on metal. In this study, the kinetics and the lubrication friction of borided layers in the plasma electrolytic boriding on the Q235 were investigated in an aqueous solution for 5–15 min. The cross-section and surface morphologies of the boriding layers were confirmed using scanning electro...

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