Now showing items 221-230 of 269
Helium in the polar wind
(Elsevier, 1992)
The coupled, time-dependent continuity, momentum and energy equations for four charged species (H+, He+, O+ and electrons) moving through a stationary upper neutral atmosphere (composed of O2, N2, O, He, H) were solved ...
The relationship between upwind SO2 emissions and SO4- concentrations in precipitation at six sites in the eastern U.S.A.
(Elsevier, 1993-08)
A method for estimating the upwind SO2 emissions associated with individual wet SO42- deposition events has been developed. The relationship between these estimates and wet SO42- concentrations was examined at six Utility ...
A Comparative Study of Coherent & Incoherent Doppler Lidar Techniques
(Marshall Space Flight Center, 1994-06-03)
Our purpose in this report is two-fold: 1) describe the basics of the coherent and incoherent systems, particularly the latter, and 2) compare the performance of the two technologies in a meaningful way. We conclude that ...
Orthogonal rational functions on a semi-infinite interval
(Elsevier, 1987-05)
By applying a mapping to the Chebyshev polynomials, we define a new spectral basis: the "rational Chebyshev functions on the semi-infinite interval," denoted by TLn(y). Continuing earlier work by the author and by Grosch ...
Unique hues are not invariant with brief stimulus durations
(Elsevier, 1979)
Unique hue loci were obtained from three observers at several intensity levels with a 1-sec stimulus flash and a 17 msec stimulus flash. With the one-second stimulus the three spectral unique hues were approximately invariant ...
The Venus ionosphere
(Elsevier, 1985)
Physical properties of the Venus ionosphere obtained by experiments on the US Pioneer Venus and the Soviet Venera missions are presented in the form of models suitable for inclusion in the Venus International Reference ...
Ground-based observations of O2+ 1N Band enhancements relative to N2+ 1N band emission
(Elsevier, 1989-02)
Spectrometric measurements in normal aurora of O2+ first negative (1N) and N2+ first negative (1N) emissions over the wavelength range 5175-5325 A have been obtained with coincident incoherent scatter radar measurements ...
Recent experimental measurements of space platform charging at LEO altitudes
(Elsevier, 1992-12)
The estimation of the extent of electrical charging of space platforms at low earth orbit (LEO) altitudes has been a subject of interest for a number of years. Early estimates based on theoretical current-voltage relationships ...
Application of the Monte Carlo method in modeling 2 dusty gas, dust in plasma, and energetic ions in planetary, magnetospheric, and heliospheric environments.
(2020-10-08)
The dataset contains a subset of results published in the paper "Application of the Monte Carlo method in modeling dusty gas, dust in plasma, and energetic ions in planetary, magnetospheric, and heliospheric environments" ...
RO-Vibrational state densities based on spectroscopic data for non-separable systems
(Elsevier, 1989-07-21)
A Monte Carlo procedure for calculating the density of states is described. The method is based on an expansion of the eigenstate energies as term values, and coupling among vibrations and rotations is explicitly included. ...