Results 21 to 30 of about 2,353,407 (330)
Sensors, 2023 In order to rapidly and accurately monitor cadmium contamination in lettuce and understand the growth conditions of lettuce under cadmium pollution, lettuce is used as the test material.
Lina Zhou +6 more
doaj +1 more source
Electro-absorption of silicene and bilayer graphene quantum dots [PDF]
, 2016 We study numerically the optical properties of low-buckled silicene and AB-stacked bilayer graphene quantum dots subjected to an external electric field, which is normal to their surface.
Abdelsalam, H. +4 more
core +2 more sources
Spectral Shifts of Nonadiabatic High-Order Harmonic Generation
Applied Sciences, 2013 High-order harmonic generation (HHG) is a nonlinear nonperturbative process in ultrashort intense laser-matter interaction. It is the main source of coherent attosecond (1 as = 10−18 s) laser pulses to investigate ultrafast electron dynamics.
André D. Bandrauk, Xue-Bin Bian
doaj +1 more source
Nanomaterials, 2021 Fresh Ag nanoparticles (NPs) dispersed on a transparent SiO2 exhibit an intense optical extinction band originating in localized surface plasmon resonance (LSPR) in the visible range.
Koichi Ozaki +2 more
doaj +1 more source
Nature, 1964 Hoyle1 has shown that for a steady-state universe consisting of uniformly distributed matter of density ρ a metric of the form: applies if it is assumed that a uniform creation of matter occurs.
openaire +2 more sources
More complete discussion of the time-dependence of the non-static line element for the universe [PDF]
, 1930 In a previous article,(1) I have shown that a continuous transformation of matter into radiation, occurring throughout the universe, as postulated by the astrophysicists, would necessitate a nonstatic line element for the universe, and have shown that ...
Tolman, Richard C.
core +1 more source
Screening High-z GRBs with BAT Prompt Emission Properties [PDF]
, 2008 Detecting high-z GRBs is important for constraining the GRB formation rate, and tracing the history of re-ionization and metallicity of the universe.
David Palmer +7 more
core +2 more sources
Extreme red shifted SERS nanotags [PDF]
Chemical Science, 2015 Extreme red-shifted nanotags have been developed and they provide effective SERS with picomolar detection limits when excited at 1280 nm.
Bedics, Matthew A. +9 more
openaire +4 more sources
Cosmic Concordance and Quintessence [PDF]
, 2000 We present a comprehensive study of the observational constraints on spatially flat cosmological models containing a mixture of matter and quintessence --- a time varying, spatially inhomogeneous component of the energy density of the universe with ...
Affleck I. +38 more
core +2 more sources
Explaining the Gamma-Ray Burst E_peak Distribution [PDF]
, 2002 The characteristic photon energy for Gamma Ray Bursts, E_peak, has a remarkably narrow distribution for bursts of similar peak flux, with values between 150 and 600 keV for most faint bursts.
Schaefer, Bradley E.
core +3 more sources