35 research outputs found
Origins of the Ambient Solar Wind: Implications for Space Weather
The Sun's outer atmosphere is heated to temperatures of millions of degrees,
and solar plasma flows out into interplanetary space at supersonic speeds. This
paper reviews our current understanding of these interrelated problems: coronal
heating and the acceleration of the ambient solar wind. We also discuss where
the community stands in its ability to forecast how variations in the solar
wind (i.e., fast and slow wind streams) impact the Earth. Although the last few
decades have seen significant progress in observations and modeling, we still
do not have a complete understanding of the relevant physical processes, nor do
we have a quantitatively precise census of which coronal structures contribute
to specific types of solar wind. Fast streams are known to be connected to the
central regions of large coronal holes. Slow streams, however, appear to come
from a wide range of sources, including streamers, pseudostreamers, coronal
loops, active regions, and coronal hole boundaries. Complicating our
understanding even more is the fact that processes such as turbulence,
stream-stream interactions, and Coulomb collisions can make it difficult to
unambiguously map a parcel measured at 1 AU back down to its coronal source. We
also review recent progress -- in theoretical modeling, observational data
analysis, and forecasting techniques that sit at the interface between data and
theory -- that gives us hope that the above problems are indeed solvable.Comment: Accepted for publication in Space Science Reviews. Special issue
connected with a 2016 ISSI workshop on "The Scientific Foundations of Space
Weather." 44 pages, 9 figure
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A CHEMICAL SECTIONING METHOD FOR THE MEASUREMENT OF SMALL DIFFUSION COEFFICIENTS IN SOLIDS
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A STUDY OF THE OPTICAL PROPERTIES AND OF THE PHYSICAL ADSORPTION OF GASES ON SILVER SINGLE CRYSTAL SURFACES BY LOW ENERGY ELECTRON DIFFRACTION AND ELLIPSOMETRY
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GAS ADSORPTION STUDIES BY ELLIPSOMETRY IN COMBINATION WITH LOW ENERGY ELECTRON DIFFRACTION AND MASS SPECTRO-METRY
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GAS ADSORPTION STUDIES BY ELLIPSOMETRY IN COMBINATION WITH LOW ENERGY ELECTRON DIFFRACTION AND MASS SPECTRO-METRY
Liposomes in the chemotherapy of experimental murine malaria
SCOPUS: le.jinfo:eu-repo/semantics/publishe
Primaquine liposomes in the chemotherapy of experimental murine malaria
Due to a significant reduction of toxicity, 100% curative (causal prophylactic) doses of primaquine diphosphate entrapped in liposomes (60 and 70 mg/kg body weight) can be administered in a single intravenous injection to treat sporozoite-induced Plasmodium bergheiinfections of mice.Although drug activity is not enhanced as compared to free drug, a simplified experimental therapy scheme could be developed, which may facilitate comparative pharmacokinetic studies of various drug delivery systems. © 1980 Liverpool School of Tropical Medicine.SCOPUS: ar.jinfo:eu-repo/semantics/publishe