The standard multilevel regressions that are widely used in neighborhood research typically ignore potential between-neighborhood correlations due to underlying spatial processes, and hence they produce inappropriate inferences about neighborhood effects. In contrast, spatial models make estimations and predictions across areas by explicitly modeling the spatial correlations among observations…
Abstract. High-quality monodisperse Cu2S nanocrystals (sizes from 2 nm to 20 nm) have been successfully synthesized by the reaction of copper stearate (CuSt2) and dodecanethiol (DDT) in 1-octadecene (ODE). The nanocrystals were characterized using X-ray diffraction (XRD), X-ray photoelectron spectrum (XPS), and transmission electron microscopy (TEM). These as-prepared Cu2S nanocrystals with…
Abstract. Surface enhanced Raman scattering (SERS) properties of silver electrodes and periodical silver nanowire arrays were studied and compared. The silver electrode was fabricated by applying oxidization– reduction cycle (ORC) voltage on a high purity (99.999%) silver sheet in 0.2 M KCl solution and the periodical nanowire arrays were fabricated by assembling silver nanowire into the …