We report the current–voltage characteristics of gold nanoparticle–biopolymer networks at room temperature. The characteristics have features that are indicative of single-electron charging in ordered, one-dimensional chains of nanoparticles. From capacitance estimates and numerical simulations, we argue that the observed electrical behavior is related to the low size dispersion of the nanopart...

Abstract The local field correction to the spontanous dacay rate of an impurity source atom imbedded in a disordered dielectric is calculated to second order in the dielectric density. The result is found to differ from predictions associated with both ”virtual” and ”real” cavity models of this decay process. However, if the contributions from two dielectric atoms at the same position are inclu...

We introduce a Riemannian metric with non positive curvature in the (infinite dimensional) manifold Σ∞ of positive invertible operators of a Hilbert space H, which are scalar perturbations of Hilbert-Schmidt operators. The (minimal) geodesics and the geodesic distance are computed. It is shown that this metric, which is complete, generalizes the well known non positive metric for positive defin...

According to the Food and Drug Administration (FDA) website, between the years of 2005 and 2012, there have been 100 cases of catheters being embedded in Onyx cast (ev3, Irvine, California) [1]. Because these microcatheters have a metallic coil within the shaft, the safety of brain magnetic resonance imaging (MRI) is safe in this situation is not known. We report a patient in whom the MRI was p...

During the last decade, problems regarding the Traffic Management Advisor(TMA) has become a concerning matter. A novel hybrid Genetic Algorithm(GA) for the goal of seeking best possible alignment has been presented in this paper. This simple and yet very thorough method benefits from low computational burden, higher convergence rate and lower overall delays. Comprehensive simulations and implem...

Climate varies, both temporally and spatially, and the focus of the body of palaeoclimatic research has been to characterize and explain this variation. What has emerged is a view of climate as a multi-component system that varies across a range of temporal and spatial scales. Imbedded in these variations are some characteristic features such as trends, abrupt changes, periodicities, and the fo...

Figure 2. MRE Results. a) Magnitude image of the porcine globe imbedded in a bovine-gelatin substrate. b) Up-down sensitized wave image, showing the mode-conversion of 10-Hz longitudinal waves at the corneoscleral surface and propagation of the resulting shear waves inside the vitreous body. c) Shear stiffness map generated with a local frequency estimation algorithm, yielding an average stiffn...

We establish that every bounded convex domain in C with an automorphism orbit accumulation at a boundary point at which the domain has a sphere contact from inside admits a non-compact 1-parameter subgroup of automorphisms. Notice that this in particular implies that no Teichmüller domain of a Riemann surface of genus g > 1 can be holomorphically imbedded as a convex domain in C .

A function f : R → R is a connectivity function if for every connected subset C of R the graph of the restriction f |C is a connected subset of R, and f is an extendable connectivity function if f can be extended to a connectivity function g : R → R with R imbedded into R as R × {0}. There exists a connectivity function f : R → R that is not extendable. We prove that for n ≥ 2 every connectivit...

In the closing months of each 3'ear a number of cases of so called "gun-powder injury" to the eyes are met with in the South of India, lhese accidents occur mostly at the time of the feasts of Deepavali (DivaliJ and Kartilc which are commonly spoken of as "cracker feasts." Ihe appearance of an injured eye is most characteristic; it looks as if a number of fine grains of red pepper had been imbe...