The University of Edinburgh

Edinburgh, Scotland, United Kingdom

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School of GeoSciences
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School of Informatics
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School of Biological Sciences
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    ABSTRACT: Narrow-bore instruments are commonly perceived to be brighter than wide-bore models of the same kind of instrument. This effect is closely related to the effect of the bore profile of a brass instrument on the potential for non-linear propagation of sound within the tube. This paper reports on practical tests with trumpets of different bore diameters, experiments with loudspeaker excitation of instruments, and simulations. The brassiness curves of a range of low instruments with similar Brassiness Potential but differing in their absolute bore diameters are compared. The relative importance of the two effects is explored.
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    ABSTRACT: 15 high-functioning school aged children with ASD and 15 neurotypically developing age matched controls were assessed using the WISC-IV and the KABC-II in order to assess whether the WISC-IV has rectified problems associated with the WISC-III's undue emphasis on timing measures. No significant group differences were found for the PRI sub-scale of the WISC-IV nor for the nonverbal scale of the KABC-II, but the ASD group scored significantly lower than controls on the Processing Speed Index of the WISC-IV. This supports the need to isolate of timing criteria when IQ testing in populations with ASD, as is now the case with the WISC-IV. However significantly higher scores were obtained for the KABC-II versus the PRI for children with ASD only. The reasons for this are discussed with regard to a possible cultural bias in the Picture Concepts subtest of the WISC-IV.
    Research in Autism Spectrum Disorders 09/2014; 8(9):1200–1207.
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    ABSTRACT: Zinc oxide (ZnO) nanoparticles are one of the most frequently used nanoparticles in industry and hence are likely to be introduced to the groundwater environment. The mobility of these nanoparticles in different aquifer materials has not been assessed. While some studies have been published on the transport of ZnO nanoparticles in individual porous media, these studies do not generally account for varying porous medium composition both within and between aquifers. As a first step towards understanding the impact of this variability, this paper compares the transport of bare ZnO nanoparticles (bZnO-NPs) and capped ZnO nanoparticles, coated with tri-aminopropyltriethoxysilane (cZnO-NPs), in saturated columns packed with glass beads, fine grained sand and fine grained calcite, at near-neutral pH and groundwater salinity levels. With the exception of cZnO-NPs in sand columns, ZnO nanoparticles are highly immobile in all three types of studied porous media, with most retention taking place near the column inlet. Results are in general agreement with DLVO theory, and the deviation in experiments with cZnO-NPs flowing through columns packed with sand is linked to variability in zeta potential of the capped nanoparticles and sand grains. Therefore, differences in surface charge of nanoparticles and porous media are demonstrated to be key drivers in nanoparticle transport.
    Journal of contaminant hydrology 04/2014; 162-163C:17-26.


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    Drummond Street, EH8 9XP, Edinburgh, Scotland, United Kingdom
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