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Benefit of multi-hole self-expandable metal stent placement for hilar biliary bleeding: effective hemostasis without biliary branch obstruction. [PDF]
EndoscopyKoga T +6 more
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Novel surgical trick for femoral rotation: matching lesser trochanter profile using common features of retrograde intramedullary nails. [PDF]
OTA IntVaida JB, Miller JM, Adams JDJ.
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, 2009 The fast solar wind originates from polar coronal holes. Recent observations from SoHO suggest that the solar wind is flowing from funnel-shaped magnetic fields anchored in the lanes of the magnetic network at the solar surface. Using the spectroscopic diagnostic capability of SUMER on SoHO and of EIS on HINODE, we study waves in polar coronal holes ...
Banerjee, D., D. Banerjee
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Coronal Holes and Icosahedral Symmetry
Astrophysics and Space Science, 2003In continuation of our study of the application of group theory to the problem of solar wind expansion out of a system of coronal holes, this third paper deals with the formulation and subsequent numerical integration of the basic hydrodynamic equations.
Herbert Kalisch +4 more
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The Geometric Spreading of Coronal Plumes and Coronal Holes
Solar Physics, 1998The geometric spreading in plumes and in the interplume region in coronal holes is calculated, using analytic and numerical theoretical models, between 1.0 and 5.0 solar radius. We apply a two-scale approximation that permits the rapid local spreading at the base of plumes (f(sub t)) to be evaluated separately from the global spreading (f(sub g ...
S. T. Suess +4 more
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1998
Five years of soft X-ray images from Yohkoh have provided us with a unique view of high-energy solar phenomena, as well as a new way of observing the lowest activity levels of the solar corona. For the first time, the Sun has been observed at soft X-ray wavelengtsHs during the minimum phase of solar cycle 22, showing an almost turned-off X-ray Sun. The
A. Sanchez-Ibarra, M. Barraza-Paredes
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Five years of soft X-ray images from Yohkoh have provided us with a unique view of high-energy solar phenomena, as well as a new way of observing the lowest activity levels of the solar corona. For the first time, the Sun has been observed at soft X-ray wavelengtsHs during the minimum phase of solar cycle 22, showing an almost turned-off X-ray Sun. The
A. Sanchez-Ibarra, M. Barraza-Paredes
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Evidence linking coronal transients to the evolution of coronal holes
Solar Physics, 1978The positions of X-ray coronal transients outside of active regions observed during Skylab were superposed on H-alpha synoptic charts and coronal hole boundaries for seven solar rotations. A detailed spatial association between the transients and neutral lines was confirmed.
David F. Webb +3 more
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On the Electron density in a coronal hole
Solar Physics, 1995Electron density in a coronal hole is rediscussed using the new calculation for the Mgviii λ436.62/λ430.47 density-sensitive theoretical line ratio and with the help of available observations.
B. N. Dwivedi, Anita Mohan
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Is the chromosphere hotter in coronal holes?
AIP Conference Proceedings, 1999Coronal holes are brighter than the quiet Sun in microwaves. Microwave emission from the quiet Sun is optically thick thermal bremsstrahlung from the upper chromosphere. Therefore, the optically thick layer in the coronal hole chromosphere must be hotter than the corresponding layer in the quiet chromosphere.
N. Gopalswamy +4 more
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2019
The term coronal hole has at least three definitions: (i) the darkest patches on the solar surface as measured in UV and soft x-rays; (ii) the lowest intensity regions measured above the limb, seen either during a total solar eclipse or with an occulting coronagraph; and (iii) open-field (or open-flux) regions, which are equivalent to the footpoints of
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The term coronal hole has at least three definitions: (i) the darkest patches on the solar surface as measured in UV and soft x-rays; (ii) the lowest intensity regions measured above the limb, seen either during a total solar eclipse or with an occulting coronagraph; and (iii) open-field (or open-flux) regions, which are equivalent to the footpoints of
openaire +1 more source