21,117 research outputs found
Three-Year Creel Census of Lake Catherine, Lake Hamilton, and Lake Ouachita, Arkansas
Copia digital. Madrid : Ministerio de Educación, Cultura y Deporte, 201
Turbulence characteristics of an axisymmetric reacting flow
Turbulent sudden expansion flows are of significant theoretical and practical importance. Such flows have been the subject of extensive analytical and experimental study for decades, but many issues are still unresolved. Detailed information on reacting sudden expansion flows is very limited, since suitable measurement techniques have only been available in recent years. The present study of reacting flow in an axisymmetric sudden expansion was initiated under NASA support in December 1983. It is an extension of a reacting flow program which has been carried out with Air Force support under Contract F33615-81-K-2003. Since the present effort has just begun, results are not yet available. Therefore a brief overview of results from the Air Force program will be presented to indicate the basis for the work to be carried out
A semi-implicit numerical method for treating the time transient gas lubrication equation
Numerical method for treating time transient gas lubrication equatio
Application of remote sensing for fishery resource assessment and monitoring
There are no author-identified significant results in this report
Nonequilibrium electron rings for synchrotron radiation production
Electron storage rings used for the production of synchrotron radiation (SR)
have an output photon brightness that is limited by the equilibrium beam
emittance. By using interleaved injection and ejection of bunches from a source
with repetition rate greater than 1 kHz, we show that it is practicable to
overcome this limit in rings of energy ~1 GeV. Sufficiently short kicker pulse
lengths enable effective currents of many milliamperes, which can deliver a
significant flux of diffraction-limited soft X-ray photons. Thus, either
existing SR facilities may be adapted for non-equilibrium operation, or the
technique applied to construct SR rings smaller than their storage ring
equivalent.Comment: 5 pages, 2 figures; accepted for publication in Physical Review
Letter
Application of remote sensing for fishery resource assessment and monitoring. Skylab oceanic gamefish project
There are no author-identified significant results in this report
Evolution of Ohmically Heated Hot Jupiters
We present calculations of thermal evolution of Hot Jupiters with various
masses and effective temperatures under Ohmic dissipation. The resulting
evolutionary sequences show a clear tendency towards inflated radii for
effective temperatures that give rise to significant ionization of alkali
metals in the atmosphere, compatible with the trend of the data. The degree of
inflation shows that Ohmic dissipation, along with the likely variability in
heavy element content can account for all of the currently detected radius
anomalies. Furthermore, we find that in absence of a massive core, low-mass hot
Jupiters can over-flow their Roche-lobes and evaporate on Gyr time-scales,
possibly leaving behind small rocky cores.Comment: Accepted to The Astrophysical Journal (2011) 735-2, 9 pages, 8
figures, updated figures 2-
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