نتایج جستجو برای: drag analysis

تعداد نتایج: 2834672  

Journal: :Physical review letters 2009
S M Badalyan G Vignale

We predict a new effect in electronic bilayers: spin Hall drag. The effect consists of the generation of spin accumulation across one layer by an electric current along the other layer. It arises from the combined action of spin-orbit and Coulomb interactions. Our theoretical analysis, based on the Boltzmann equation formalism, identifies two main contributions to the spin Hall drag resistivity...

Journal: :The Journal of General Physiology 1985
T L Mullen M Muller J T Van Bruggen

This study presents experiments related to the role of solvent drag and solute drag in the transmembrane movement of nonelectrolytes in a perfused rat intestine preparation. Conditions were chosen to simulate the effects of luminal hyperosmolarity on the permeability of tracer solutes. Data are presented on net water flux, transepithelial potentials, and lumen-to-blood and blood-to-lumen tracer...

Journal: :Sociology 2021

Drag performance has entered mainstream British culture and is gaining unprecedented appreciation recognition, yet no sociological accounts of this transformation exist. Using an inductive analysis in-depth interviews with 25 drag performers, alongside netnography media other public data, article develops a understanding the mainstreaming drag. There are two clear reasons for success First, the...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2001
I Albert J G Sample A J Morss S Rajagopalan A L Barabási P Schiffer

We study the drag force on discrete objects with circular cross section moving slowly through a spherical granular medium. Variations in the geometry of the dragged object change the drag force only by a small fraction relative to shape effects in fluid drag. The drag force depends quadratically on the object's diameter as expected. We do observe, however, a deviation above the expected linear ...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2013
chirravuri venkata subbarao yanamala phanikumar yadav, pulipati king

efflux time measurements are carried out for gravity draining of a liquid from a large cylindrical tank (where the flow is essentially laminar) through single exit pipe in the absence and presence of cetyl pyridinium chloride (cpc) surfactant solutions. the variables considered are initial height of liquid in the tank, dia. of tank, length of the exit pipe and concentration of surfactant. the d...

Journal: :Analytical chemistry 2013
David W Wegman Leonid T Cherney George M Yousef Sergey N Krylov

Using microRNA (miRNA) as molecular markers of diseases requires a method for accurate measurement of multiple miRNAs in biological samples. Direct quantitative analysis of multiple miRNAs (DQAMmiR) has been recently developed based on a classical hybridization approach. In DQAMmiR, miRNAs are hybridized with excess fluorescently labeled complementary DNA probes. Capillary electrophoresis (CE) ...

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2011
John Kim

Turbulence physics responsible for high skin-friction drag in turbulent boundary layers is first reviewed. A self-sustaining process of near-wall turbulence structures is then discussed from the perspective of controlling this process for the purpose of skin-friction drag reduction. After recognizing that key parts of this self-sustaining process are linear, a linear systems approach to boundar...

2002
P.H.A.J.M. van Gelder

Since L-moment estimators are linear functions of the ordered data values, they are virtually unbiased and have relatively small sampling variance, especially in comparison to the classical coefficients of skewness and kurtosis. Moreover, estimators of L-moments are relatively insensitive to outliers. Liaw and Zheng (2004) calculated drag forces on cylinders by polynomial approximations in whic...

1994
M. C. A. Kropinski Michael J. Ward Joseph B. Keller

The classical problem of slow, steady, two-dimensional ow of a viscous incompressible uid around an innnitely long straight cylinder is considered. The cylinder cross-section is symmetric about the direction of the oncoming stream, but otherwise is arbitrary. For low Reynolds number, the well-known singular perturbation analysis for this problem shows that the asymptotic expansions of the drag ...

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