We address the question of degree spatial nonlocality self-energy in iron-based superconductors, a subject which is receiving considerable attention. Using LiFeAs as prototypical example, we extract from angular-resolved photoemission spectroscopy data. use two distinct electronic structure references: density functional theory local approximation and linearized quasiparticle self-consistent GW...

The problem addressed in this paper is that the incoming stream of “feedstock” from product take-back systems is known to be widely variable, but the type and extent of that variability have not been well defined. This paper presents an analysis of data from an incoming e-waste stream for a computer refurbisher, and analyzes the type and degree of variability. The implications for design for su...

A quantitative analysis of the effects of variable ®ber properties on the performance of a cross̄ow hollow ®ber gas separation module is presented. The effects of variations in size, permeance, and selectivity are considered. Fiber variability is detrimental to performance. The recovery and ̄ow rate of an enriched retentate stream decrease as variability increases. Some ®bers may actually stop p...

Considerable data demonstrates a role for the hippocampus in spatial navigation. Here we present a detailed model of how the components of hippocampal circuitry might guide movement toward flexible goal locations in a familiar environment. The model contains the following features: (1) Route planning is based on the spread of activation; (2) The spread of activation is gated by environmental co...

Bonding to a quantum corral Chemical bonds generally form between electronic states of atoms; in principle, other could also bonds. Stilp et al. found that the created within corrals, large rings iron atoms on copper surface, can chemical with metal an atomic force microscope tip. The from many electrons but have spatial extent compared orbital. covalent bond 48-atom state had energy just 5 mil...

We investigated the influence of the relative phase of a temporally modulated annulus on the perceived flicker strength of a center stimulus having the same temporal modulation. These measurements were performed in two subjects at two temporal frequencies and with different outer diameters of the annulus. The perceived flicker strength was strongly modulated by the phase difference between cent...