Results 41 to 50 of about 3,458,432 (336)

A Singular Limit Problem for Rotating Capillary Fluids with Variable Rotation Axis [PDF]

open access: yes, 2015
In the present paper we study a singular perturbation problem for a Navier–Stokes–Korteweg model with Coriolis force. Namely, we perform the incompressible and fast rotation asymptotics simultaneously, while we keep the capillarity coefficient constant ...
F. Fanelli
semanticscholar   +1 more source

Rotation of two-petal laser beams in the near field of a spiral microaxicon [PDF]

open access: yesКомпьютерная оптика, 2018
Using a spiral microaxicon with the topological charge 2 and NA = 0.6 operating at a 532-nm wavelength and fabricated by electron-beam lithography, we experimentally demonstrate the rotation of a two-petal laser beam in the near field (several ...
Sergey Stafeev   +2 more
doaj   +1 more source

Off-vertical axis rotation of the visual field and nauseogenicity

open access: yes, 2009
BACKGROUND: Off-vertical axis rotation (OVAR) causes motion sickness which increases with angle of tilt and is most provocative around 0.2 Hz. The aim was to determine the tilt angle and frequency characteristics for visual OVAR, which is also known to ...
Arun, S.   +5 more
core   +1 more source

Vertical-axis wind turbines in oblique flow: sensitivity to rotor geometry [PDF]

open access: yes, 2011
Increasing interest is being shown worldwide in the application of vertical-axis wind turbines for decentralised electricity generation within cities.
Scheurich, Frank, Brown, Richard
core   +3 more sources

Angle Estimation of Simultaneous Orthogonal Rotations from 3D Gyroscope Measurements

open access: yesSensors, 2011
A 3D gyroscope provides measurements of angular velocities around its three intrinsic orthogonal axes, enabling angular orientation estimation. Because the measured angular velocities represent simultaneous rotations, it is not appropriate to consider ...
Sara Stančin, Sašo Tomažič
doaj   +1 more source

Off vertical axis rotation motion sickness and field dependence

open access: yes, 2011
BACKGROUND: Our study probed the relationship between field dependence and the development of nausea in light and dark during whole-body, off vertical axis rotation (OVAR).
Golding, John F   +13 more
core   +1 more source

Nauseogenicity of off-vertical axis rotation vs. equivalent visual motion

open access: yes, 2008
Introduction: Off-vertical axis rotation (OVAR) provokes motion sickness. The visual motion equivalent to OVAR in simulators is also nauseogenic. Our experiment compared the nauseogenicity of OVAR vs. visual motion.
Bronstein, A.M.   +3 more
core   +1 more source

Instantaneous axis of rotation for continuous human knee motion [PDF]

open access: yes, 1997
Previous studies of human knee motion are based on finite rotation data collected using large rotation steps varying from 5 to 30 degrees. In some cases this rotation data is used to develop axes of rotation for the joint. For such analysis, the rotation
Parks, Steven A.
core   +2 more sources

Investigation results of kinematic and dynamic indicators of tiller with vertical rotation axis in orchards soil cultivation

open access: yes, 2017
The results of experimental-theoretical investigations on the tillers with vertical rotation axis in soil cultivation and weed eradication in orchards are introduced in the article.
A. Tarverdyan, S. Sargsyan, A. Altunyan
semanticscholar   +1 more source

Functional comparison of EncB and EncC cargo proteins in iron storage within the Myxococcus xanthus encapsulin

open access: yesFEBS Letters, EarlyView.
Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell   +2 more
wiley   +1 more source

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