Now showing items 1-10 of 28
Asymptotics of the scattering coefficients for a generalized Schrödinger equation
(AIP Publishing, 1999-08)
The generalized Schrodinger equation d(2)psi/dx(2) + F(k)psi=[ikP(x) + Q(x)]psi is considered, where P and Q are integrable potentials with finite first moments and F satisfies certain conditions. The behavior of the ...
14-year program monitoring the flux densities of 33 radio sources at low frequencies
(IOP PUBLISHING LTD, 1999-01)
We present the results of a low-frequency flux density monitoring program of 33 extragalactic radio sources. The light curves at 318 and 430 MHz over a 14 yr period are presented. The measurements were made with the NAIC ...
Constraints on top-color assisted technicolor models from vertex corrections
(American Physical Soc, 1999-07-01)
Thickness dependence of second-harmonic generation in thin films fabricated from ionically self-assembled monolayers
(AIP Publishing, 1999-01-01)
An ionically self-assembled monolayer (ISAM) technique for thin-film deposition has been employed to fabricate materials possessing the noncentrosymmetry that is requisite for a second-order, chi((2)), nonlinear optical ...
Ultrafast photogeneration mechanisms of triplet states in para-hexaphenyl
(American Physical Society, 1999-06)
We present femtosecond pump-probe measurements, both conventional and electric field-assisted, on organic light-emitting devices based on para-hexaphenyl. The dominant triplet excition generation mechanism is assigned to ...
Critical dynamics at incommensurate phase transitions and NMR relaxation experiments
(Amer Physical Soc, 1999-05-01)
(Virginia Tech, 1999)
This is the alumni magazine of the Department of Chemistry at Virginia Tech. Inside: Sticking with Louis Sharpe as he starts to slow down. Plus: The new learning center expands and a brain researcher probes neurological disorders.
A simple model of circadian rhythms based on dimerization and proteolysis of PER and TIM
(CELL PRESS, 1999-11)
Many organisms display rhythms of physiology and behavior that are entrained to the 24-h cycle of light and darkness prevailing on Earth. Under constant conditions of illumination and temperature, these internal biological ...