Results 31 to 40 of about 16,066,439 (292)

Visualization Tools for High Angular Resolution Diffusion Imaging [PDF]

open access: yes, 2008
There is a major effort in medical imaging to develop algorithms to extract information from DTI and HARDI, which provide detailed information on brain integrity and connectivity. As the images have recently advanced to provide extraordinarily high angular resolution and spatial detail, including an entire manifold of information at each point in the ...
David W. Shattuck   +8 more
openaire   +7 more sources

Herbig Ae/Be Star Disks at High Angular Resolution [PDF]

open access: yesSymposium - International Astronomical Union, 2004
We show that there exists a simple geometric picture for the geometries of protoplanetary disks around Herbig Ae/Be stars that explains the two main kinds of spectral energy distributions found for these objects, and that makes predictions that are qualitatively in agreement with currently available spatially resolved images and/or interferometric ...
Dullemond, C.P.   +4 more
openaire   +3 more sources

High-resolution maps of the characteristic energy of precipitating auroral particles [PDF]

open access: yes, 2001
For the first time we produce high-resolution maps of the characteristic energy of precipitating electrons from ground-based instrumentation in the auroral zone over northern Scandinavia. This is done by combining intensity-calibrated optical data at 557.
Kosch, M.J.   +4 more
core   +5 more sources

High Angular Resolution Observations of Late‐Type Stars [PDF]

open access: yesThe Astrophysical Journal Supplement Series, 2002
This paper presents speckle observations of Mira (o Cet) and late-type stars with the PISCO speckle camera of Pic du Midi during the period 1995-1998. A survey for binarity among a sample of late-type stars was performed, which led to seven positive detections out of 36 objects.
Prieur, Jean-Louis   +5 more
openaire   +3 more sources

Orbital angular momentum: origins, behavior and applications [PDF]

open access: yes, 2011
As they travel through space, some light beams rotate. Such light beams have angular momentum. There are two particularly important ways in which a light beam can rotate: if every polarization vector rotates, the light has spin; if the phase structure ...
Padgett, M.J.   +5 more
core   +1 more source

TNO, occultation, and high angular resolution astronomy

open access: yesEPJ Web of Conferences, 2011
The trans-Neptunian region is a new frontier in the solar system research. Occultation is currently the only way to detect a trans-Neptunian object (TNO) of typical comet-size in that region.
King S.-K.
doaj   +1 more source

Measurement of Submicron Particle Size Using Scattering Angle-Corrected Polarization Difference with High Angular Resolution

open access: yesPhotonics, 2023
The particle size of submicron particles significantly affects their properties; thus, the accurate measurement of submicron particle size is essential to ensure its excellent properties.
Chaoyi Shi   +7 more
doaj   +1 more source

Density of optical degrees of freedom : intensity, linear and angular momentum [PDF]

open access: yes, 2014
For any optical system, optical eigenmodes describe solutions of Maxwells equations that are orthogonal to each other. In their simplest free space form, these modes correspond, for example, to Bessel, Laguerre-Gaussian or Hermite-Gaussian beams. However,
Michael Mazilu, Mazilu, Michael
core   +1 more source

Channeling Effects in High Angular Resolution Electron Spectroscopy [PDF]

open access: yesMicroscopy and Microanalysis, 2006
Extended abstract of a paper presented at Microscopy and Microanalysis 2006 in Chicago, Illinois, USA, July 30 – August 3 ...
L. J. Allen   +4 more
openaire   +1 more source

A statistical framework to characterise microstructure in high angular resolution diffusion imaging

open access: yes, 2008
High angular resolution diffusion imaging (HARDI) is an MR acquisition technique that has been used to identify and estimate multi-modal structure in white matter.
Whitcher, B., Olhede, S.
core   +1 more source

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