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Who should receive vertebroplasty?
(Family Physicians Inquiries Network, 2006)
Percutaneous vertebroplasty has been used to treat aggressive vertebral hemangiomas, osteoporotic vertebral compression fractures, and vertebral lesions from metastatic disease or myeloma. Consider it for patients with ...
Time-dependent density-functional theory beyond the adiabatic approximation: Insights from a two-electron model system
(American Institute of Physics, 2006)
Most applications of time-dependent density-functional theory (TDDFT) use the adiabatic local-density approximation (ALDA) for the dynamical exchange-correlation potential Vxc(r,t). An exact (i.e., nonadiabatic) extension ...
Collective excitations in quantum Hall liquid crystals: Single-mode approximation calculations
(American Physical Society, 2006)
A variety of recent experiments probing the low-temperature transport properties of quantum Hall systems have suggested an interpretation in terms of liquid crystalline mesophases dubbed quantum Hall liquid crystals. The ...
The dynamics of superfluid 4He
(arXiv, 2006)
We present neutron scattering results for the dynamic response by superfluid and normal-fluid 4He and the results of a simple perturbation-theory analysis which allows us to describe all aspects of the observed behavior ...
The ground state of a quantum critical system
(arXiv, 2006)
The competition between the tendency of magnetic moments to order at low temperatures, and the tendency of conduction electrons to shield these moments, can result in a phase transition that takes place at zero Kelvin, the ...
Non-Fermi-liquid behavior in Ce(Ru1‑xFex)2Ge2 : Cause and effect
(American Physical Society, 2006)
We present inelastic neutron scattering measurements on the intermetallic compounds Ce(Ru1−xFex)2Ge2 (x=0.65, 0.76, and 0.87). These compounds represent samples in a magnetically ordered phase, at a quantum critical point, ...
Coulomb corrections to the extrinsic spin-Hall effect of a two-dimensional electron gas
(American Physical Society, 2006)
We develop the microscopic theory of the extrinsic spin-Hall conductivity of a two- dimensional electron gas, including skew- scattering, side-jump, and Coulomb interaction effects. We find that while the spin-Hall ...
Exchange and correlation effects on the plasmon dispersions and the Coulomb drag in low-density electron bilayers
(arXiv, 2006)
We investigate the effect of exchange and correlation (xc) on the plasmon spectrum and the Coulomb drag between spatially separated low-density two-dimensional electron layers. We adopt a new approach, which employs dynamic ...
Integral charge quasiparticles in a fractional quantum Hall liquid
(American Physical Society, 2006)
Starting from a collective description of the incompressible fractional quantum Hall liquid as an elastic medium that supports gapped neutral excitations, I show that the one-electron spectral function of this system ...
Agarose-stabilized gold nanoparticles for surface-enhanced Raman spectroscopic detection of DNA nucleosides
(American Institute of Physics, 2006)
We present surface-enhanced Raman scattering (SERS) studies of DNA nucleosides using biologically benign agarose-stabilized gold nanoparticles (AAuNP). We compare the SERS activity of nucleosides with AAuNP to that of ...
K-12 Public School Finance in Missouri: An Overview
(Federal Reserve Bank of St. Louis, 2006)
The level and distribution of spending for public K-12 education remains a contentious matter of policy in many states because of increasing expectations for school performance and widespread school finance litigation. In ...
Influence of Gold Nanoparticles on Collagen Fibril Morphology Quantified Using Transmission Electron Microscopy and Image Analysis
(BMC Medical Imaging, 2006)
Development of implantable biosensors for disease detection is challenging because of poor biocompatibility of synthetic materials. A possible solution involves engineering interface materials that promote selfassembly and ...
Helicity-rotation-gravity coupling for gravitational waves
(American Physical Society, 2006)
The consequences of spin-rotation-gravity coupling are worked out for linear gravitational waves. The coupling of helicity of the wave with the rotation of a gravitational-wave antenna is investigated and the resulting ...
Recognizing Falls from Silhouettes
(IEEE, 2006-08)
A major problem among the elderly involves
falling. The recognition of falls from video first requires the segmentation of the individual from the background. To ensure privacy, segmentation should result in a silhouette ...
Tidal dynamics in Kerr spacetime
(Institute of Physics, 2006)
The motion of free nearby test particles relative to a stable equatorial circular
geodesic orbit about a Kerr source is investigated. It is shown that the nonlinear
generalized Jacobi equation can be transformed in this ...
Massive-Star Supernovae as Major Dust Factories
(arXiv, 2006)
We present late-time optical and mid-infrared observations of the Type-II supernova 2003gd in NGC 628. Mid-infrared excesses consistent with cooling dust in the ejecta are observed 499-678 days after outburst, and are ...
Detection of a Far-Infrared Bow-Shock Nebula Around R Hya: the First MIRIAD Results
(American Astronomical Society, 2006)
We present the first results of the MIRIAD (MIPS InfraRed Imaging of AGB Dust shells) project using the Spitzer Space Telescope. The primary aim of the project is to probe the material distribution in the extended
circumstellar ...
Effects of Turbid Media Optical Properties on Object Visibility in Subsurface Polarization Imaging
(The Optical Society of America, 2006-08)
We studied the effectiveness of using polarized illumination and detection to enhance the visibility of targets buried in highly scattering media. The effects of background optical properties including scattering coefficient, ...
Surfacing Perversions of Democracy in the Workplace: A Contemporary Psychoanalytic Project
(Psychoanalysis, Culture & Society, 2006)
In this paper, we explore the psychodynamics of democracy in the workplace with a particular focus on unconscious and collusive forms of perverting democratic processes at work. We suggest that interpersonally and collectively ...
Resource Allocation and Performance Analysis of Wireless Video Sensors
(IEEE, 2006-05)
Wireless video sensor networks (WVSNs) have been envisioned for a wide range of important applications, including battlefield intelligence, security monitoring, emergency response, and environmental tracking. Compared to ...