9,136 research outputs found

    Surveying Landscape

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    This was an exhibition curated by jointly by the University of Chichester and the Ironbridge Open Air Museum of Steel Sculpture, UK. The Otter Gallery has a collection C20 British artists including Henry Moore, Patrick Heron and Graham Sutherland. The exhibition was a 2 person exhibition with the American sculptor, James A Wade Jr. My contribution was 24 sculptures and 6 digital prints. The exhibition was a key dissemination point of a period of fine art practice research; extending previous work based on journeys in Landscape. The research addressed new approaches in relation to scale and materials in sculpture revealing the methodological approaches in engagement with actual landscapes in association with the WALK research group at the University of Sunderland. A new direction was taken in the way the journeys by foot were mapped and recorded by date and companions. Routes from satellite images and maps provided information for templates cut by computer aided design and manufacture. Dissemination was via: 1. The work itself exhibited in: The Otter Gallery, University of Chichester 7.12.2012 – 27.1.2013. 2. An associated 40 page publication “Surveying Landscape” with a foreword by Pam Brown Director of the Ironbridge Open Air Museum of Steel Sculpture and an essay by Sam Cornish. The publication is a full catalogue of the exhibition and contains full colour images of all my exhibited work. 3. The sculpture “River Wear (Blue Glass)” was exhibited at the ICA Gallery London as part of the City of Sunderland’s Launch of its creative Industries strategy October 2010. The supporting portfolio contains images and details of all work exhibited and the associated Publication

    A Differential Abundance Analysis of Very Metal-Poor Stars

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    We have performed a differential, line-by-line, chemical abundance analysis, ultimately relative to the Sun, of nine very metal-poor main sequence halo stars, near [Fe/H]=-2 dex. Our abundances range from 2.66[Fe/H]1.40-2.66\leq\mathrm{[Fe/H]}\leq-1.40 dex with conservative uncertainties of 0.07 dex. We find an average [α\alpha/Fe]=0.34±0.09=0.34\pm0.09 dex, typical of the Milky Way. While our spectroscopic atmosphere parameters provide good agreement with HST parallaxes, there is significant disagreement with temperature and gravity parameters indicated by observed colors and theoretical isochrones. Although a systematic underestimate of the stellar temperature by a few hundred degrees could explain this difference, it is not supported by current effective temperature studies and would create large uncertainties in the abundance determinations. Both 1D and \langle3D\rangle hydrodynamical models combined with separate 1D non-LTE effects do not yet account for the atmospheres of real metal-poor MS stars, but a fully 3D non-LTE treatment may be able to explain the ionization imbalance found in this work.Comment: 18 pages, 13 tables, 5 figures, Accepted in Ap

    Their Colours and Their Forms

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    Their Colours and their Forms has been curated by John Strachan, Brian Thompson and myself. It is an exhibition that shows new work by artists, composers and creative writers responding imaginatively to Wordsworth’s life and poetry and the manuscripts of William and Dorothy Wordsworth displayed in the Museum. For this exhibition, my work was shown alongside the manuscripts of Dorothy and William Wordsworth held by the trust, and as a direct result of this project, four new pieces have been acquired by the Wordsworth Trust and are now on permanent display next to the Journals of Dorothy Wordsworth that my work reference

    Amino-terminal sequences of the bacillus anthracis exosporium proteins BCLA and BCLB important for localization and attachment to the spore surface

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    The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file."August 2008"Thesis (M.S.) University of Missouri-Columbia 2008.The exosporium is the outermost layer of the Bacillus anthracis spore. The predominant protein on the exosporium surface is BclA, a collagen-like glycoprotein. BclA is incorporated on the spore surface late in the B. anthracis sporulation pathway. A second collagen-like protein, BclB, has been shown to be surface exposed on anthrax spores. We have identified sequences near the N-terminus of the BclA and BclB glycoproteins responsible for the incorporation of these proteins into the exosporium layer of the spore and used these targeting domains to incorporate reporter fluorescent proteins onto the spore surface. The BclA and BclB proteins are expressed in the mother cell cytoplasm and become spore-associated in a two step process involving first association of the protein with the spore surface followed by attachment of the protein in a process that involves a proteolytic cleavage event. Protein domains associated with each of these events have been identified. This novel targeting system can be exploited to incorporate foreign proteins into the exosporium of B. anthracis resulting in the surface display of recombinant immunogens for use as a potential vaccine delivery system.Includes bibliographical references

    Brunnian links are determined by their complements

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    If L_1 and L_2 are two Brunnian links with all pairwise linking numbers 0, then we show that L_1 and L_2 are equivalent if and only if they have homeomorphic complements. In particular, this holds for all Brunnian links with at least three components. If L_1 is a Brunnian link with all pairwise linking numbers 0, and the complement of L_2 is homeomorphic to the complement of L_1, then we show that L_2 may be obtained from L_1 by a sequence of twists around unknotted components. Finally, we show that for any positive integer n, an algorithm for detecting an n-component unlink leads immediately to an algorithm for detecting an unlink of any number of components. This algorithmic generalization is conceptually simple, but probably computationally impractical.Comment: Published by Algebraic and Geometric Topology at http://www.maths.warwick.ac.uk/agt/AGTVol1/agt-1-7.abs.htm

    Impact of climate change and bioenergy on nutrition

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    Food security has deteriorated since 1995 and reductions in child malnutrition are proceeding too slowly to meet the Millennium Development Goal (MDG) target for halving hunger by 2015. Three major challenges threaten to drastically complicate efforts to overcome food insecurity and malnutrition: climate change, the growing use of food crops as a source of fuel and soaring food prices. Food security has four dimensions: food availability, access to food, stability of supply and access and safe and healthy food utilization. It is a key factor in good nutrition, along with health, sanitation and care practices. Globally, one billion people are currently without access to safe water and over 2 billion lack adequate sanitation facilities. Present global food supplies are more than adequate to provide everyone with all the needed calories, if the food were equally distributed. But over 820 million people in developing countries have calorie-deficient diets; over 60 percent live in Sub-Saharan Africa and South Asia.Climate change, Bioenergy, Nutrition, food security, Food prices, Sustainable development,
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