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Now showing items 141-160 of 324
Which Lipoprotein Measurements Are Clinically Useful?
(Family Physicians Inquiries Network, 2007)
Emerging lipid risk factors for cardiovascular disease include lipoprotein remnants, lipoprotein (a), small LDL particles, HDL subspecies, apolipoprotein B, apolipoprotein A-I, and oxidized LDL. Measurement of these levels ...
Angiotensin Blockade in Patients with Diabetic Nephropathy
(Family Physicians Inquiries Network, 2007)
When used to delay the progression of early nephropathy in patients with type 2 diabetes mellitus, angiotensin receptor blockers (ARBs) are not superior to angiotensin-converting enzyme (ACE) inhibitors. (Strength of ...
Glycemic Control in Patients with Type 2 Diabetes
(Family Physicians Inquiries Network, 2007)
There is no clearly superior oral agent for glycemic control in patients with type 2 diabetes. (Strength of Recommendation [SOR]: C) Metformin (Glucophage) has shown additional benefit when compared with other treatments ...
Annual zoledronic acid infusion lowers risk of fracture, death
(Family Physicians Inquiries Network, 2007)
Patients with a prior hip fracture have 2.5 times the risk of a new fracture compared to age-matched persons without a previous hip fracture. For patients with a recent hip fracture, intravenous zoledronic acid annually ...
Distances sets that are a shift of the integers and Fourier basis for planar convex sets
(2007)
The aim of this paper is to prove that if a planar set $A$ has a difference set $\Delta(A)$ satisfying $\Delta(A)\subset \Z^++s$ for suitable $s$ than $A$ has at most 3 elements. This result is motivated by the conjecture ...
Time-dependent density functional theory: Derivation of gradient-corrected dynamical exchange-correlational potentials
(American Physical Society, 2007)
We have recently proposed an approximation for the dynamical exchange-correlation (XC) potentials of time-dependent current-density functional theory beyond the local density approximation [Phys. Rev. Lett. 97, 036403 ...
Including nonlocality in the exchange-correlation kernel from time-dependent current density functional theory: Application to the stopping power of electron liquids
(American Physical Society, 2007)
We develop a scheme for building the scalar exchange-correlation (XC) kernel of time-dependent density functional theory (TDDFT) from the tensorial kernel of time- dependent current density functional theory (TDCDFT) and ...
Quantum Theory of Orbital Magnetization and Its Generalization to Interacting Systems
(American Physical Society, 2007)
Based on standard perturbation theory, we present a full quantum derivation of the formula for the orbital magnetization in periodic systems. The derivation is generally valid for insulators with or without a Chern number, ...
Gravimagnetism, Causality, and Aberration of Gravity in the Gravitational Light-Ray Deflection Experiments
(arXiv, 2007)
Experimental verification of the existence of gravimagnetic fields generated by currents of matter is important for a complete understanding and formulation of gravitational physics. Although the rotational (intrinsic) ...
Gravitational bending of light by planetary multipoles and its measurement with microarcsecond astronomical interferometers
(arXiv, 2007)
General relativistic deflection of light by mass, dipole, and quadrupole moments of gravitational field of a moving massive planet in the Solar system is derived in the approximation of the linearized Einstein equations. ...
Memory function formalism approach to electrical conductivity and optical response of dilute magnetic semiconductors
(arXiv, 2007)
A combination of the memory function formalism and time-dependent density-functional theory is applied to transport in dilute magnetic semiconductors. The approach considers spin and charge disorder and electron-electron ...
Gravimagnetic effect of the barycentric motion of the Sun and determination of the post-Newtonian parameter gamma in the Cassini experiment
(arXiv, 2007)
The most precise test of the post-Newtonian gamma parameter in the solar system has been achieved in measurement of the frequency shift of radio waves to and from the Cassini spacecraft as they passed near the Sun. The ...
Schrödinger equation for the one-particle density matrix of thermal systems: an alternative formulation of Bose-Einstein condensation
(Institute of Physics, 2007)
We formulate a linear Schrödinger equation with a temperature-dependent potential for the one-particle density matrix and obtain the condensation temperature of the Bose-Einstein condensate from a bound-state condition for ...
Nonlocal Dirac equation for accelerated observers
(American Physical Society, 2007)
The nonlocal theory of accelerated systems is extended to the propagation of Dirac particles. The implications of nonlocality for the phenomenon of spin-rotation coupling are discussed. The Lorentz-invariant nonlocal Dirac ...
Nonlocal Electrodynamics of Accelerated Systems
(arXiv, 2007)
Acceleration-induced nonlocality is discussed and a simple field theory of nonlocal electrodynamics is developed. The theory involves a pair of real parameters that are to be determined from observation. The implications ...
Gilbert damping and spin Coulomb drag in a magnetized electron liquid with spin-orbit interaction
(American Physical Society, 2007)
We present a microscopic calculation of the Gilbert damping constant for the magnetization of a two-dimensional spin- polarized electron liquid in the presence of intrinsic spin-orbit interaction. First, we show that the ...
Exchange and correlation effects on plasmon dispersions and Coulomb drag in low-density electron bilayers
(American Physical Society, 2007)
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 different approach, which employs ...
Tidal dynamics in cosmological spacetimes
(Institute of Physics, 2007)
We study the relative motion of nearby free test particles in cosmological spacetimes, such as the FLRW and LTB models. In particular, the influence of spatial inhomogeneities on local tidal accelerations is investigated ...
Crystallization of amorphous silicon by self-propagation of nanoengineered thermites
(American Institute of Physics, 2007)
Crystallization of amorphous silicon (a-Si) thin film occurred by the self-propagation of copper oxide/aluminum thermite nanocomposites. Amorphous Si films were prepared on glass at a temperature of 250 °C by plasma ...
Decaying dark energy in higher-dimensional gravity
(EDP Sciences, 2007)
Aims. We use data from observational cosmology to put constraints on higher-dimensional extensions of general relativity in which the effective four-dimensional dark-energy density (or cosmological “constant”) decays with ...