Results 41 to 50 of about 696,670 (191)

Deconstructing Frame-Dragging [PDF]

open access: yesUniverse, 2021
The vorticity of world-lines of observers associated with the rotation of a massive body was reported by Lense and Thirring more than a century ago. In their example, the frame-dragging effect induced by the vorticity is directly (explicitly) related to the rotation of the source.
openaire   +3 more sources

Antimicrobial Activity of Lactobacillus plantarum Strains Isolated from Fermented Olives Origin

open access: yesJournal of Medicinal Plants, 2009
Background: Lactobacillus plantarum isolated from fermented olives has been extensively studied with the aim of its use in starter cultures for olive or other production fermentations, but little is known about its antimicrobial resistance and its ...
MR Fazeli   +4 more
doaj  

An Empirical Model of Aerodynamic Drag in Alpine Skiing

open access: yesProceedings, 2018
This paper describes an empirical model of aerodynamic drag for a range of body positions commonly used in alpine skiing. In order to calculate the drag coefficient (CD), a method for calculating the frontal area of an alpine skier, inside a wind tunnel,
Ola Elfmark, Lars M. Bardal
doaj   +1 more source

Streamwise-traveling waves of spanwise wall velocity for turbulent drag reduction [PDF]

open access: yes, 2009
Waves of spanwise velocity imposed at the walls of a plane turbulent channel flow are studied by Direct Numerical Simulations. We consider sinusoidal waves of spanwise velocity which vary in time and are modulated in space along the streamwise direction.
Quadrio, M., Ricco, P., Viotti, C.
core   +3 more sources

Heteroglossia and Fragmentariness in the Absent Therapist by Will Eaves

open access: yesStudia Anglica Posnaniensia, 2016
In “Discourse in the Novel” Mikhail Bakhtin argues that heteroglossia - a diversity of voices or languages - is one of the essential properties of the novel.
Drąg Wojciech
doaj   +1 more source

Crossover from hydrodynamic to acoustic drag on quartz tuning forks in normal and superfluid 4He [PDF]

open access: yes, 2012
We present measurements of the drag forces on quartz tuning forks oscillating at low velocities in normal and superfluid 4He. We have investigated the dissipative drag over a wide range of frequencies, from 6.5 to 600 kHz, by using arrays of forks with ...
Bradley, D. I.   +10 more
core   +1 more source

Effect of pulsatile flow to drag of a two-dimensional bluff body

open access: yesNihon Kikai Gakkai ronbunshu, 2021
Drag and velocity measurement on a two-dimensional bluff body has been performed in a pulsatile flow. Circular and rectangular cylinders were selected in the present study.
Kouki ISERI   +2 more
doaj   +1 more source

Van der Waals Frictional Drag induced by Liquid Flow in Low- Dimensional Systems [PDF]

open access: yes, 2008
We study the van der Waals frictional drag force induced by liquid flow in low-dimensional systems (2D and 1D electron systems, and 2D and 1D channels with liquid). We find that for both 1D and 2D systems, the frictional drag force induced by liquid flow
A. I. Volokitin   +6 more
core   +3 more sources

Anomalous optical drag

open access: yesPhysical Review Research, 2022
6 pages, 4 ...
Chitram Banerjee   +7 more
openaire   +3 more sources

Electron drag in ferromagnetic structures separated by an insulating interface

open access: yes, 2018
We consider electron drag in a system of two ferromagnetic layers separated by an insulating interface. The source of it is expected to be magnon-electron interactions.
Galperin, Y. M.   +2 more
core   +1 more source

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