Results 291 to 300 of about 3,847,981 (341)

Multi-sample particle flux collector

OCEANS '88. 'A Partnership of Marine Interests'. Proceedings, 2003
A nonmetallic, conical fibreglass sediment trap has been designed to collect uncontaminated, preconcentrated samples compatible with trace element analytical requirements. The sediment trap has a 0.5-m/sup 2/ collecting area and a 15-multiple sample cup mechanism to allow the sediment trap to collect gram-size monthly samples during a typical year-long
R. Mesecar, C. Moser
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Quantal particle flux and nuclear halo effects

Physical Review C, 1995
We propose a method to study refractive scattering by looking at the quantal particle flux within the volume occupied by the nuclear potential. The method is applied to discuss the nuclear halo effects in the elastic scattering of [sup 11]Li and [sup 11]C on [sup 12]C at [ital E]/[ital A][similar to]60 MeV.
Silveira, R. Da, Klarsfeld, S., Boukour, A., Leclercq-Willain, C.   +3 more
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Turbulent particle flux and momentum flux statistics in suspension flow

Water Resources Research, 2003
The particle entrainment ability of coherent flow structures is investigated by comparing statistical properties of momentum flux u′w′ and of turbulent mass fluxes c′u′ and c′w′ in suspension, open‐channel flow under capacity charge conditions. The quadrant repartitions of these quantities as a function of the corresponding threshold levels are ...
Hurther, David, Lemmin, Ulrich
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Energetic particle fluxes onto Callisto's atmosphere

2022
<p>Jupiter’s moon Callisto is exposed to a highly dynamic magnetospheric environment. During a full synodic period, properties of the local magnetospheric field and thermal plasma environment change by an order of magnitude, and Callisto’s resulting interaction with the ambient plasma displays a strong ...
Lucas Liuzzo, Andrew Poppe, Peter Addison, Sven Simon, Quentin Nenon, Chris Paranicas   +5 more
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Flux of Particles in Sawtooth Media

Physical Review Letters, 1997
We study Brownian motion in chains of segments with flashing sawtoothlike potentials. In all former models for stochastic ratchets a coherent switching of the potential is assumed. We consider the generalized case which allows independent switchings of the potential in single segments. We introduce three different rules: correlated, anticorrelated, and
Lutz Schimansky-Geier, Maik Kschischo, Thomas Fricke   +2 more
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Flux effects in solid particle erosion

Wear, 1987
Abstract Systematic measurements of the steady state erosion rate as a function of erodent particle flux were made for a range of different erosion conditions. A significant decrease in erosion rate with increasing flux was observed. A first-order particle collision model was developed that provides a physical basis for describing the flux effect ...
K. Anand, S.K. Hovis, H. Conrad, R.O. Scattergood   +3 more
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Flux Quantization and Particle Physics

Physical Review D, 1972
Quantized flux has provided an interesting model for muons and for electrons: One closed flux loop of the form of a magnetic dipole field line is assumed to adopt alternative forms which are superposed with complex probability amplitudes to define the magnetic field of a source lepton.
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Hydrodynamic focusing of a particle flux

Journal of Engineering Physics and Thermophysics, 1996
Based on numerical integration of the equations of mechanics of multiphase media, an effect of focusing of a particle flux generated by a source located on the upper wall of a closed vessel has been revealed and investigated.
G. M. Makhviladze, O. I. Melikhov, I. P. Nikolova   +2 more
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Particle flux through sediment fingers

Deep Sea Research Part I: Oceanographic Research Papers, 1997
Experiments were carried out to examine the fingering convection process occurring at the interface between a layer of warm, particle-laden water overlying a layer of cold, fresh water. In the formation stage, the rapidly descending fingers were irregular, with large caps or vortex rings at their tips.
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Exergy transported by particle fluxes

Physica A: Statistical Mechanics and its Applications, 2008
Abstract A general theory for the available work (exergy) carried by particle fluxes is developed ab initio by using a simple statistical thermodynamics approach. Relationships that may be used for both fermions and bosons are derived. The exergy flux of free particles involves an efficiency-like factor affecting the energy flux. This factor contains
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