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Diurnal evolution of the F region electron density local time gradient at low and middle latitudes resolved by the Swarm constellation
(American Geophysical Union, 2016-09-02)
In this study we have provided new insights into the local time gradient of F region electron density (ΔNe) derived from the lower pair of Swarm satellites flying side by side. Our result shows that the electron density ...
Temperature and electron density gradient in Xe laser produced plasmas, by spectral analysis
(Pergamon-Elsevier Science Ltd, 2000-03)
We have performed a spectroscopic analysis on laser produced plasmas in Xe at intermediates pressures (less than 1 atm), resolved both spectrally and temporally, also discriminating different regions of the plasma. This ...
Gradient-dependent density functionals of the Perdew-Burke-Ernzerhof type for atoms, molecules, and solids
(AMER PHYSICAL SOC, 2009)
One of the standard generalized-gradient approximations (GGAs) in use in modern electronic-structure theory [Perdew-Burke-Ernzerhof (PBE) GGA] and a recently proposed modification designed specifically for solids (PBEsol) ...
Nonempirical hyper-generalized-gradient functionals constructed from the Lieb-Oxford bound
(AMER PHYSICAL SOC, 2009)
A simple and completely general representation of the exact exchange-correlation functional of density-functional theory is derived from the universal Lieb-Oxford bound, which holds for any Coulomb-interacting system. This ...
Chemical heterogeneity in poly [styrene-co-(butyl methacrylate)] copolymer latexes prepared using different monomer addition modes. A study by isopycnic centrifugation in density gradient
(Dr Dietrich Steinkopff VerlagDarmstadtAlemanha, 1997)
Improvement of retrieved FORMOSAT‐3/COSMIC electron densities validated by ionospheric sounder measurements at Jicamarca
(American Geophysical Union, 2011-09-01)
Inversion techniques applied to GPS‐LEO radio occultation data allow the retrieval of accurate and worldwide‐distributed refractivity profiles, which, in the case of the ionosphere, can be converted into electron densities ...
DFT calculation of core-electron binding energies
(Elsevier Science BvAmsterdamHolanda, 2003)
Gravity wave modulation of gradient drift instabilities in mid-latitude sporadic E irregularities
(American Geophysical Union, 1991-07)
Recent E region VHF backscatter echoes observed by the MU radar at mid-latitudes show quasiperiodic striations with a fairly constant range vs. time tilt in a RTI display. These features are explained in terms of gravity ...
Role of Surfactants in Carbon Nanotubes Density Gradient Separation
(AMER CHEMICAL SOC, 2010)
Several strategies aimed at sorting single-walled carbon nanotubes (SWNT) by diameter and/or electronic structure have been developed in recent years. A nondestructive sorting method was recently proposed in which nanotube ...
Mid-latitude plasma and electric field measurements during space weather month, September 1999
(Elsevier, 2003-07)
Using data collected during the September 1999 combined ionospheric campaign (CIC), we examine the effects of moderate geomagnetic activity on low and mid-latitudes. Perturbations in the zonal electric field, measured at ...