Results 261 to 270 of about 349,191 (315)

Clouds and Precipitation Particles

2020
Clouds are a common sight in the sky that is familiar to most people on earth. During a bright sunny day, we enjoy the sight of white puffy cumulus clouds floating, seemingly effortlessly, in the blue sky.
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Particle transport in electrostatic precipitators

Atmospheric Environment (1967), 1980
Abstract We discuss the transport of particles in a precipitator due to the combined effects of mobility and eddy diffusion in the gas flow. For an idealized model of a duct precipitator, the convective diffusion equation is solved analytically for the monodisperse particle concentration n(x, z) as a sum of normal modes which can represent any ...
G. Leonard, M. Mitchner, S.A. Self
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Charging particles in precipitators

Electrical Engineering, 1951
ELECTROSTATIC PRECIPITATION derives fundamentally from the mechanical or Coulomb force which is exerted on an electrically charged particle in an electric field. Although other forces of electrical origin may act on particles, these are insignificant compared to the Coulomb force and are of minor importance in electrostatic precipitation.
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Auroral Particle Precipitation Patterns

1972
Data from a low energy auroral electron and proton experiment are presented which were obtained from October 1968 to June 1970 from the polar-orbit satellite ESRO I A (Aurorae). The results include (a) discontinuities in the precipitation patterns around 5 and 19 hr MLT, (b) ‘valleys’ in the average flux distributions in the noon/dusk sector, (c ...
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Plasma sheet particle precipitation: A kinetic model

Planetary and Space Science, 1973
Ionospheric and plasma sheet particle densities, fluxes and bulk velocities along an auroral magnetic field line have been calculated for an ion-exosphere model. It is shown that such a collisionless model accounts for many features observed above the auroral regions.
Lemaire, J., Scherer, M.
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Wave–particle interaction and enhanced precipitation of charged particles

Canadian Journal of Physics, 1985
In addition to parallel electric fields, the distortions in the geomagnetic field have been considered in the study of resonant whistler wave interaction with gyrating charged particles. Mead axisymmetric distortions in the geomagnetic field have been considered and new expressions for the inhomogeneity parameter, αd, have been obtained.
R. N. Singh, R. Prasad
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Rare Earth element composition of precipitation, precipitation particles, and aerosols

Journal of Geophysical Research: Atmospheres, 1993
We report the rare earth element (REE) composition of aerosols and precipitation (dissolved and particle phases) from Bermuda, Lewes (Delaware), and Woods Hole (Massachusetts). There is large‐scale fractionation of REEs between the continents, atmosphere, and the oceans. The REE compositions of atmospheric samples are highly fractionated relative to (1)
Edward R. Sholkovitz, Thomas M. Church, Richard Arimoto   +2 more
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Precipitation of Nanoscale Aluminum Hydroxide Particles

Journal of Dispersion Science and Technology, 2001
The precipitation of nanoscale alumina particles from sodium aluminate solutions by dilution and neutralization with water and oxalic acid in the presence of a surface-active polymers polyvinylpyrrolidone (PVP) and polyvinyl alcohol (PVA) is investigated.
Don H. Rasmussen, Chris Brancewicz, Biman Das, Mats Graeffe, Jarl Rosenholm, Alicia Toscano   +5 more
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Joule heating and particle precipitation

Advances in Space Research, 1982
Abstract A short review of different techniques for deriving the amount of heat input into the auroral upper atmosphere due to Joule heating and particle precipitation is given. The relative importance and altitude of these two energy sources with respect to auroral substorm time is stressed.
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Review of Auroral Particle Precipitation

2013
An attempt to establish the precipitation signal of an auroral arc based on data gathered by sounding rockets and satellites is presented. Rocket sounding is useful for altitudes up to a few thousand km, the S3-3 satellite from 4000-8000 km, and satellites in GEO for the equatorial plane.
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