824 research outputs found

    Using quasiconvex functionals to bound the effective conductivity of composite materials

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    SynopsisIn this paper we establish bounds constraining the effective conductivity tensor of composites made of an arbitrary number n of possibly anisotropic phases in prescribed volume fractions. The bounds are valid in any spatial dimension d≧2. The bounds have a very simple and concise form and include those previously obtained by Hashin and Shtrikman, Murat and Tartar, Lurie and Cherkaev, Kohn and Milton, Avellaneda, Cherkaev, Lurie and Milton and Dell'Antonio and Nesi.</jats:p

    NeSI Futures

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    NeSI is a key feature of the New Zealand investment in science infrastructure. It was first established in mid-2011 and is now in its 8th year of operations. Currently NeSI is formulating its long-term strategic plan having completed a successful external evaluation in mid-2016. Over the last year NeSI has carried out a range of activities to inform its strategic plans, including a research consultation, an international benchmark study, a survey of its migration to its new infrastructure, and a review of its training activities. Looking ahead at the key challenges faced by the research sector, this session outlines what NeSI has learnt at a high-level, and map out the journey ahead. ABOUT THE AUTHOR(S) Nick Jones is NeSI’s founding Director, having established and led NeSI alongside a team of colleagues and peers since inception in mid-2011. Nick is responsible for NeSI’s strategic directions and performance overall, bringing together a talented and diverse array of people, and their institutions and interests. Nick has over 20 years’ experience in innovating in advanced information/computing technology in sectors including education, science and research. Nick established the eResearch NZ conference series in 2010 to support the sector coming together in the spirit of community to share experiences and explore directions in an area so critical to our future prosperity as a nation.</div

    Improved bounds for composites and rigidity of gradient fields

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    We determine an improved lower bound for the conductivity of three-component composite materials. Our bound is strictly larger than the well-known Hashin Shtrikman bound outside the regime where the latter is known to be optimal. The main ingredient of our result is a new quantitative rigidity estimate for gradient fields in two dimensions

    Novel Nuclear Export Signal-Interacting Protein, Nesi, Critical for the Assembly of Hepatitis Delta Virus

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    The process of host factor-mediated nucleocytoplasmic transport is critical for diverse cellular events in eukaryotes and the life cycle of viruses. We have previously identified a chromosome region maintenance 1- independent nuclear export signal (NES) at the C terminus of the large form of hepatitis delta antigen (HDAg), designated NES(HDAg- L) that is required for the assembly of hepatitis delta virus (HDV) (C.-H. Lee et al. , J. Biol. Chem. 276:8142-8148, 2001). To look for interacting proteins of the NES(HDAg-L), yeast two-hybrid screening was applied using the GAL4- binding domain fused to the NES(HDAg-L) as bait. Among the positive clones , one encodes a protein, designated NESI [NES (HDAg-L) interacting protein ] that specifically interacted with the wild-type NES(HDAg-L) but not with the export/ package-defective HDAg-L mutant, NES*(HDAg-L), in which Pro- 205 has been replaced by Ala. Northern blot analysis revealed NESI as the gene product of a 1.9-kb endogenous mRNA transcript that is present predominantly in human liver tissue. NESI consists of 467 amino acid residues and bears a putative actin-binding site and a bipartite nuclear localization signal. Specific interaction between HDAg-L and NESI was further confirmed by coimmunoprecipitation and immunofluorescence staining . Overexpression of antisense NESI RNAs inhibited the expression of NESI and abolished HDAg-L-mediated nuclear export and assembly of HDV genomic RNA. These data indicate a critical role of NESI in the assembly of HDV through interaction with HDAg-L

    How NeSI helps Manaaki Whenua -Landcare Research monitor land cover changes

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    We describe a NeSI consultancy project, which, during November 2018, helped Manaaki Whenua - Landcare Research (MWLR) increase its capacity to analyse large numbers of satellite images.ABOUT THE AUTHOR(S)Alex Pletzer is a Research Software Engineer working for NeSI and physically located at NIWA. When he’s not helping researchers squeeze performance out of their code, you might find him windsurfing around Wellington or walking with his wife on top of a hill. -James Shepherd is Researcher for Manaaki Whenua – Landcare Research at Palmerston NorthMandes Schönherr is Application Support Specialist for NeSI at NIWA, Wellington Chris Scott is Scientific Programmer for NeSI at the University of Auckland</div

    Baron Despatys. Magistrats et criminels (1795-1844) d'après les Mémoires de Gaillard. 1913

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    Nesi Marcel. Baron Despatys. Magistrats et criminels (1795-1844) d'après les Mémoires de Gaillard. 1913. In: Revue d'histoire moderne et contemporaine, tome 18 N°6,1913. pp. 474-476

    Jean Lhomer. François de Neufchateau (1750-1828). 1913

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    Nesi Marcel. Jean Lhomer. François de Neufchateau (1750-1828). 1913. In: Revue d'histoire moderne et contemporaine, tome 19 N°1, Janvier-Février 1914. pp. 50-52

    J. Trésal. L'annexion de la Savoie à la France, 1913

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    Nesi Marcel. J. Trésal. L'annexion de la Savoie à la France, 1913. In: Revue d'histoire moderne et contemporaine, tome 18 N°5,1913. pp. 407-410

    J.-B. Galley. Claude Fauriel, membre de l'Institut (1772-1843), 1909

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    Nesi Marcel. J.-B. Galley. Claude Fauriel, membre de l'Institut (1772-1843), 1909. In: Revue d'histoire moderne et contemporaine, tome 15 N°2,1911. pp. 246-248
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