Energy and pitch angle-dispersed auroral electrons suggesting a time-variable, inverted-V potential structure

1999 ◽  
Vol 104 (A10) ◽  
pp. 22613-22621 ◽  
Author(s):  
R. L. Arnoldy ◽  
K. A. Lynch ◽  
J. B. Austin ◽  
P. M. Kintner
Keyword(s):  
Pitch Angle ◽  
Time Variable ◽  
Auroral Electrons ◽  
Potential Structure

Pitch angle diffusion of low-energy auroral electrons

1973 ◽  
Vol 78 (10) ◽  
pp. 1608-1614 ◽  
Author(s):  
B. A. Whalen ◽  
I. B. McDiarmid
Keyword(s):  
Pitch Angle ◽  
Low Energy ◽  
Auroral Electrons

Pitch angle and energy distributions of auroral electrons measured by the ESRO 4 satellite

1979 ◽  
Vol 27 (1) ◽  
pp. 87-97 ◽  
Author(s):  
Lars Eliasson ◽  
Lars-Åke Holmgren ◽  
Kjell Rönnmark
Keyword(s):  
Pitch Angle ◽  
Energy Distributions ◽  
Auroral Electrons

scholarly journals Energy spectra and pitch angle distributions of auroral electrons observed in active and quiet auroras.

1988 ◽  
Vol 40 (7) ◽  
pp. 871-886 ◽  
Author(s):  
Hisao YAMAGISHI ◽  
Hiroshi MIYAOKA ◽  
Masaki EJIRI ◽  
Eiichi SAGAWA ◽  
Nobuyuki KAYA ◽  
...  
Keyword(s):  
Pitch Angle ◽  
Energy Spectra ◽  
Auroral Electrons

Saturn's E, G and F rings: modulated by the plasma sheet

1984 ◽  
Vol 75 ◽  
pp. 597
Author(s):  
E. Grün ◽  
G.E. Morfill ◽  
T.V. Johnson ◽  
G.H. Schwehm
Keyword(s):  
Solar Wind ◽  
Direct Contact ◽  
Transport Processes ◽  
Time Variable ◽  
Dust Particles ◽  
Spatial Diffusion ◽  
Drag Forces ◽  
Orbit Perturbation ◽  
Time Variations ◽  
F Ring

ABSTRACTSaturn's broad E ring, the narrow G ring and the structured and apparently time variable F ring(s), contain many micron and sub-micron sized particles, which make up the “visible” component. These rings (or ring systems) are in direct contact with magnetospheric plasma. Fluctuations in the plasma density and/or mean energy, due to magnetospheric and solar wind processes, may induce stochastic charge variations on the dust particles, which in turn lead to an orbit perturbation and spatial diffusion. It is suggested that the extent of the E ring and the braided, kinky structure of certain portions of the F rings as well as possible time variations are a result of plasma induced electromagnetic perturbations and drag forces. The G ring, in this scenario, requires some form of shepherding and should be akin to the F ring in structure. Sputtering of micron-sized dust particles in the E ring by magnetospheric ions yields lifetimes of 102to 104years. This effect as well as the plasma induced transport processes require an active source for the E ring, probably Enceladus.

The Adaptation of Medical Records to Epidemiological Use

1965 ◽  
Vol 04 (03) ◽  
pp. 136-140
Author(s):  
Cl Jeanty
Keyword(s):  
Medical Records ◽  
Clinical Pathology ◽  
Time Variable ◽  
Special Care ◽  
General Description ◽  
Causal Relations ◽  
Laboratory Techniques ◽  
Original Record ◽  
Statistical Studies

A method is described in an attempt to make medical records suitable for epidemiologigri: purposes. Every case of a disease is recorded on an appropriate punched card with the object of working towards a general description of a disease through the collation of several cases of the same diagnosis. This punched card represents a very great condensation of the original record. Special care has been applied to state as precisely as possible the time variable, particularly as far as its origin and unit of measure are concerned, in order to demonstrate the existence of causal relations between diseases. Such cards are also intended to make easier statistical studies in clinical pathology, in evaluation of new laboratory techniques, and in therapeutical trials.

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