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Commissioning and initial experimental program of the BGO-OD experiment at ELSA

BGO-OD is a new meson photoproduction experiment at the ELSA facility of Bonn University. It aims at the investigation of non strange and strange baryon excitations, and is especially designed to be able to detect weekly bound meson-baryon type structures. The setup for the BGO-OD experiment is presented, the characteristics of the photon beam and the detector performances are shown and the initia

Ganglion Cell Topography Indicates Pre- or Postnatal Damage to the Retro-Geniculate Visual System, Predicts Visual Field Function and May Identify Cerebral Visual Impairment in Children – A Multiple Case Study

In this paper, we quantify the degree of ganglion cell layer thinning due to retrograde trans-synaptic degeneration (RTSD) from retro-geniculate damage in six cases who had homonymous visual field defects known since childhood. Three had prenatal injuries, occurring close to mid-gestation and in the first parts of the early and late third trimester, respectively, and representing injuries at diffe

Uncertainty and self-efficacy in parents of a child with congenital cataract- new implications for practice

AimThe aim was an in‐depth exploration of uncertainty and self‐efficacy among parents of a child with congenital cataract by means of two theoretical frameworks to re‐design family care.DesignA directed content analysis in accordance with Hsieh & Shannon, using Mishel's theory of uncertainty and Bandura's self‐efficacy theory.MethodsOpen‐ended, in‐depth interviews were conducted with 23 parent

Strangeness photoproduction at the BGO-OD experiment

The BGO-OD experiment at the ELSA accelerator facility uses an energy tagged bremstrahlung photon beam to investigate the excitation spectrum of the nucleon. The setup consists of a highly segmented BGO calorimeter surrounding the target, with a particle tracking magnetic spectrometer at forward angles. BGO-OD is ideal for investigating the photoproduction of hadrons of non-zero strangeness. The h

Quantum chemical calculation of nickel and copper atomic valencies in crystalline oxides

A new quantum chemical definition is proposed of the full atomic valence, VA, taking into account both the covalent and ionic parts of the chemical bonds formed by atoms in molecules and crystals. The full atomic valencies, covalencies, and charges on atoms are calculated for nickel–oxygen crystalline compounds in the CNDO band theory approximation. A comparison of the chemical bonding in nickel a

Influence of ammonium on formation of mineral-associated organic carbon by an ectomycorrhizal fungus

The interactions between dissolved organic matter (DOM) and mineral particles are critical for the stabilization of soil organic matter (SOM) in terrestrial ecosystems. The processing of DOM by ectomycorrhizal fungi contributes to the formation of mineral-stabilized SOM by two contrasting pathways: the extracellular transformation of DOM (ex vivo pathway) and the secretion of mineral-surface-react

Coherence and resonance effects in high-order harmonic generation

We present experimental measurements of harmonic generation in xenon using a 1064-nm 40-psec Nd-doped yttrium aluminum garnet laser. The harmonic yield is studied as a function of the position of the laser focus in the atomic beam. It shows regular oscillations whose period decreases with increasing harmonic order and which can be interpreted as phase-matching effects due to the tight focusing geo

Multiply charged ions induced by multiphoton absorption processes in rare-gas atoms at 1.064μm

Multiply charged ions are easily formed in rare gases by multiphoton absorption processes. For Kr and Xe up to quadruply charged ions are formed. They are induced by a bandwidth-limited 50 ps laser pulse at 1.064 W cm -2 intensity range. Doubly charged ions are formed through the absorption of a very large number of photons (29 for Xe) in a direct transition from the ground state of the atom to th

LASER PULSE DURATION EFFECTS IN Xe2 + IONS INDUCED BY MULTIPHOTON ABSORPTION AT 0. 53 mu m.

Xe**2** plus ions can easily be formed by multiphoton absorption in Xe atoms at 0. 53 mu m. A kinetic model is developed which is based on the rate equations describing the evolution of populations of Xe atoms, Xe** plus and Xe**2** plus ions. The result is that the ratio of the number of Xe**2** plus to Xe** plus ions varies with the pulse duration tau as tau ** minus **3**/**2.

Molecular mapping and cloning of genes and QTLs

The barley genome is comprised of more than 39,000 high-confidence genes, which represent many valuable targets for breeders as well as plant researchers trying to understand the genetic network controlling the various grass species, especially members of the Triticeae tribe including barley, wheat, and rye. The present chapter provides an overview of how past activities with barley mutants, marke

Environmental Impacts of Organic Farming

Organic agriculture is a production system that aims at sustaining healthy soils, ecosystems and people by prohibiting the application of synthetic pesticides and fertilisers in crop production and by emphasising animal welfare in livestock breeding. This article shows that organic agriculture is characterised by higher soil quality and reduced nutrient or pesticide leaching compared to nonorganic

CCE in fixed-T panels

The presence of unobserved heterogeneity and its likely detrimental effect on inference has recently motivated the use of factor-augmented panel regression models. The workhorse of this literature is based on first estimating the unknown factors using the cross-section averages of the observables, and then applying ordinary least squares conditional on the first-step factor estimates. This is the