Results 11 to 20 of about 37,035 (297)

Cerebrospinal Fluid Pressure-Related Features in Chronic Headache: A Prospective Study and Potential Diagnostic Implications

open access: yesFrontiers in Neurology, 2018
Objective: To identify the pressure-related features of isolated cerebrospinal fluid hypertension (ICH) in order to differentiate headache sufferers with ICH from those with primary headache disorder.Methods: In this prospective study, patients with ...
Francesco Bono   +8 more
doaj   +1 more source

Compressional Pc5 type pulsations in the morningside plasma sheet [PDF]

open access: yesAnnales Geophysicae, 2001
We study compressional pulsations in Pc5 frequency range observed in the dawn-side at distances of about 10 RE , close to the magnetic equator. We use data obtained during two events of conjunctions between Equator-S and Geotail: 1000–1700 UT on 9 ...
A. Vaivads   +11 more
doaj   +1 more source

Pressure Pulsation Analysis of Oscillating Water Column Rotor Eccentricity Based on the Pulsation Tracking Network Method [PDF]

open access: yesJournal of Applied Fluid Mechanics
An oscillating water column (OWC) is typical of axial rotor turbines, which are used to convert ocean wave energy into electrical energy. This device impacts downstream pressure pulsations when its rotor becomes eccentric. This study compared the details
J. Lu   +6 more
doaj   +1 more source

Generation of small-scale structures in the developed turbulence [PDF]

open access: yes, 2006
The Navier-Stokes equation for incompressible liquid is considered in the limit of infinitely large Reynolds number. It is assumed that the flow instability leads to generation of steady-state large-scale pulsations.
A. M. Obukhov   +24 more
core   +2 more sources

Nonlinear hydrodynamical evolution of rotating relativistic stars: Numerical methods and code tests [PDF]

open access: yes, 1999
We present numerical hydrodynamical evolutions of rapidly rotating relativistic stars, using an axisymmetric, nonlinear relativistic hydrodynamics code.
Andersson   +46 more
core   +3 more sources

Effect of the staggered impeller on reducing unsteady pressure pulsations of a centrifugal pump

open access: yesEnergy Science & Engineering, 2022
The emitted noise and vibration induced by the unsteady flow of the centrifugal pump are always focused during its running, which is also associated with the high amplitude pressure pulsations.
Junxian Jiang   +4 more
doaj   +1 more source

Relativistic simulations of the phase-transition-induced collapse of neutron stars [PDF]

open access: yes, 2008
An increase in the central density of a neutron star may trigger a phase transition from hadronic matter to deconfined quark matter in the core, causing it to collapse to a more compact hybrid-star configuration.
Abdikamalov, E. B.   +3 more
core   +1 more source

A simple method using strain measurement on pipe outer surface to evaluate pressure pulsations in piping systems

open access: yesNihon Kikai Gakkai ronbunshu, 2014
Accurate evaluation of occurrence location and amplitude of pressure pulsations in a piping system can lead to efficient plant maintenance to prevent fatigue failure of piping and components because the pulsations could be main causes of vibration ...
Akira MAEKAWA   +3 more
doaj   +1 more source

Regimes with high levels of pressure pulsations in the model of Francis-99 hydro-turbine draft tube

open access: yesИзвестия высших учебных заведений: Проблемы энергетики, 2017
The paper reports on the regimes of flow with high level of pressure pulsations in a laboratory air model of the Francis-99 hydro turbine draft tube.
I. V. Litvinov   +2 more
doaj   +1 more source

Modulation of human muscle spindle discharge by arterial pulsations--functional effects and consequences. [PDF]

open access: yesPLoS ONE, 2012
Arterial pulsations are known to modulate muscle spindle firing; however, the physiological significance of such synchronised modulation has not been investigated.
Ingvars Birznieks   +2 more
doaj   +1 more source

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