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Results 11 - 20
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138
2001: Near-surface faceted crystals, avalanches and climate in highelevation, tropical mountains of Bolivia
- Cold Regions Science and Technology
"... Abstract The importance of near-surface faceted crystals in forming weak layers associated with snow avalanches has recently received greater attention. However, there is still much to be learned concerning the formation and growth of these crystal types, their geographical extent, and related aval ..."
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, from a nearby and safe location, showed that the avalanche ran on a thick layer of near-surface faceted crystals overlying the austral winter dry-season snow surface. Average size of the crystals was 5-7 mm, and individual crystals exceeded 10 mm in diameter. We evaluate local and regional
Facetted growth of Fe3Si shells around GaAs nanowires on Si(111)
, 2014
"... GaAs nanowires and GaAs/Fe3Si core/shell nanowire structures were grown by molecular-beam epitaxy on oxidized Si(111) substrates and characterized by transmission electron microscopy. The surfaces of the original GaAs NWs are completely covered by magnetic Fe3Si exhibiting an enhanced surface roughn ..."
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roughness compared to the bare GaAs NWs, due to formation of nanofacets. Growth of the shells at the substrate temperature of TS = 200 ◦C leads to a regular nanofacetted growth of the Fe3Si shell. The resulting facets of the shells were analyzed, which lead to thickness inhomogeneities of the shells
Synovial Cysts of the Lumbar Facet Joints: A Retrospective Magnetic Resonance Imaging Study Investigating their Relation with Degenerative
, 2009
"... Abstract: Patients with synovial cysts of the facet joints were compared with patients with degenerative spondylolisthesis (DS), based on the magnetic resonance imaging (MRI) findings of their spondyloses. The lumbar MRI of 30 patients with DS (group 1) 24 patients with synovial cysts of the facet j ..."
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joints (group 2) were studied. All patients were evaluated in terms of facet joint arthritis, disc degeneration, facet joint effusion, and the thickness of the flaval ligament. 54.1 % of the patients with synovial cysts had associated DS. The mean grade of disc degeneration (2.43±0.50 and 2
Diffuse Interfaces with Sharp Corners and Facets: Phase Field Models with Strongly Anisotropic Surfaces
"... Keywords: anisotropy, Allen-Cahn equation, motion by weighted mean curvature, nondifferentiable surface energy 1 1. Introduction. Anisotropy is an important factor in interface equilibria and dynamics. In many continuum theories of interface dynamics the interface between the two phases is regarded ..."
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as being diffuse rather than sharp, with a nonzero thickness over which properties vary smoothly from one set of bulk values to another. We model anisotropic diffuse interfaces by a single order parameter OE (OE: \Omega ! R, \Omega open in Rd) and with a free energy E = Z
Integration of plasmonic antenna on quantum cascade laser facets for chip-scale molecular sensing
- IEEE Sens
"... Abstract — Many important bio-molecules, such as proteins and pharmaceuticals, have their natural resonances in the mid-infrared (2- 30µm) region of the optical spectrum. The primary challenge of sensing these molecules is to increase the interaction between them and light with such long wavelengths ..."
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Cited by 1 (0 self)
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wavelengths. This can be overcome by exploiting optical nano-antennas which can squeeze the optical mode into a volume much smaller than the operating wavelength. We present a novel antenna design based on hybrid materials composed of a coupled Au-SiO2-Au nanorod integrated on the facet of a quantum cascade
Distribution of subchondral bone density and cartilage thickness in the human patella
, 1992
"... Subchondral bone density (by means of CT osteoabsorptiometry), and cartilage thickness (directly measured on photocopies of frozen sections), were examined in 30 human patellae, with an age range from 47 to 90 y. A surface demonstration of the distribution was prepared, and representative pictures p ..."
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Cited by 3 (0 self)
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produced by summation with a computer. Subchondral bone-density maxima were found in the proximal part of the lateral facet, and the density pattern interpreted as the expression of the long-term distribution of stress in the joint. It is reasonable to assume that cartilage thickness, of which two
NANO EXPRESS Mechanical Deformation Behavior of Nonpolar GaN Thick Films
"... Abstract In this study, the deformation mechanisms of nonpolar GaN thick films grown on m-sapphire by hydride vapor phase epitaxy (HVPE) are investigated using nanoindentation with a Berkovich indenter, cathodoluminescence (CL), and Raman microscopy. Results show that nonpolar GaN is more susceptibl ..."
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Abstract In this study, the deformation mechanisms of nonpolar GaN thick films grown on m-sapphire by hydride vapor phase epitaxy (HVPE) are investigated using nanoindentation with a Berkovich indenter, cathodoluminescence (CL), and Raman microscopy. Results show that nonpolar GaN is more
Creep Deflection of Thick-Walled Piping due to Combined Bending and Internal Pressure
"... A closed-form solution is derived for the creep deflection in thick- Introduction The analysis of the elastic deflection of piping due to gravity and support loading is a routine calculation in the power and petrochemical industries. However, after prolonged operation of piping systems at elevated ..."
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A closed-form solution is derived for the creep deflection in thick- Introduction The analysis of the elastic deflection of piping due to gravity and support loading is a routine calculation in the power and petrochemical industries. However, after prolonged operation of piping systems at elevated
Middle States Geographer, 2006, 39:126-133 CYBERSPACE THROUGH THICK AND THIN: VIRTUAL PLACES AND THE LOCATIONAL WORLD
"... ABSTRACT: Over the last two decades, cyberspace has morphed from a concept in science fiction to an interactive reality experienced on a daily basis by many people throughout the world. While several geographers have considered the many ways in which cyberspace is used and its wide-ranging impacts ..."
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on various facets of life such as communication, education, and economics, there is very little literature that addresses whether the emergence of cyberspace has affected how people think about geographical space. This paper uses a phenomenological framework to consider the spatial aspects of cyberspace
1310 nm GaInNAs triple quantum well laser The lasers, without facet coatings, were glued with the substrate down 5 No. 7with 13 GHz modulation bandwidth
"... The emission wavelength of a GaInNAs quantum well (QW) laser was adjusted to 1310 nm, the zero dispersion wavelength of optical fibre, by an appropriate choice of QW composition and thickness and N concen-tration in the barriers. A triple QW design was employed to enable the use of a short cavity wi ..."
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The emission wavelength of a GaInNAs quantum well (QW) laser was adjusted to 1310 nm, the zero dispersion wavelength of optical fibre, by an appropriate choice of QW composition and thickness and N concen-tration in the barriers. A triple QW design was employed to enable the use of a short cavity
Results 11 - 20
of
138
