61 research outputs found

    Elementary modelling and behavioural analysis for emergency evacuations using social media

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    YesSocial media usage in evacuations and emergency management represents a rapidly expanding field of study. Our paper thus provides quantitative insight into a serious practical problem. Within this context a behavioural approach is key. We discuss when facilitators should consider model-based interventions amid further implications for disaster communication and emergency management. We model the behaviour of individual people by deriving optimal contrarian strategies. We formulate a Bayesian algorithm which enables the optimal evacuation to be conducted sequentially under worsening conditions.Supported by EPSRC (IDEAS Factory - Game theory and adaptive networks for smart evacuations, EP/I005765/1

    Measurement of the tau lepton lifetime

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    The mean lifetime of the tau lepton is measured in a sample of 25700 tau pairs collected in 1992 with the ALEPH detector at LEP. A new analysis of the 1-1 topology events is introduced. In this analysis, the dependence of the impact parameter sum distribution on the daughter track momenta is taken into account, yielding improved precision compared to other impact parameter sum methods. Three other analyses of the one- and three-prong tau decays are updated with increased statistics. The measured lifetime is 293.5+/-3.1+/-1.7 fs. Including previous (1989-1991) ALEPH measurements, the combined tau lifetime is 293.7+/-2.7+/-1.6 fs

    G2PMineR: A Genome to Phenome Literature Review Approach

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    There is a gap in the conceptual framework linking genes to phenotypes (G2P) for non-model organisms, as most non-model organisms do not yet have genomic resources readily available. To address this, researchers often perform literature reviews to understand G2P linkages by curating a list of likely gene candidates, hinging upon other studies already conducted in closely related systems. Sifting through hundreds to thousands of articles is a cumbersome task that slows down the scientific process and may introduce bias into a study. To fill this gap, we created G2PMineR, a free and open source literature mining tool developed specifically for G2P research. This R package uses automation to make the G2P review process efficient and unbiased, while also generating hypothesized associations between genes and phenotypes within a taxonomical framework. We applied the package to a literature review for drought-tolerance in plants. The analysis provides biologically meaningful results within the known framework of drought tolerance in plants. Overall, the package is useful for conducting literature reviews for genome to phenome projects, and also has broad appeal to scientists investigating a wide range of study systems as it can conduct analyses under the auspices of three different kingdoms (Plantae, Animalia, and Fungi)

    Bare metal stent thrombosis 13 years after implantation.

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    There has been a great deal of recent controversy regarding the risk of very late stent thrombosis with drug eluting stents, especially in the context of antiplatelet therapy cessation. We report a case of very late stent thrombosis of a bare metal stent initially implanted for treatment of a myocardial infarction. The patient presented thirteen years later with a recurrent myocardial infarction three days after discontinuing aspirin. Angiography demonstrated thrombotic occlusion and severe underlying restenosis of the stent. To our knowledge, this is the latest bare metal stent thrombosis described in the world medical literature

    Mining Gems in Literature and Genomes: A Proof of Concept in \u3cem\u3eArtemisia tridentata\u3c/em\u3e

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    Increasing temperatures and aridity negatively affect plant communities, including the recruitment of foundational species like sagebrush (Artemisia tridentata). While research on the genomic basis of plant resilience towards drought has been conducted in crops and model plants, fewer studies have evaluated natural plant communities. We provide a resource for identifying genes underpinning drought across a broad range of plants using a literature mining approach with the newly developed package G2PMineR. Using our initial gene pool query, we refined the pipeline and manually vetted the top 50 candidate genes/gene families for relatedness to plant stress drought response and categorized based on ontologies. Selecting the exemplar gene DREB- which had the highest occurrence in the literature mining process- we provide a proof of concept by mining the Artemisia tridentata genome using known DREB DNA sequences from NCBI GenBank. Limited scaffold matches were discovered in two species of legumes, but not in the model plant species Arabidopsis thaliana. Our research will be used to construct networks for genome to phenome research, with applicability to assessing adaptive capacity of natural plant communities towards drought by analyzing gene sequences in the Artemisia tridentata genome. We anticipate this research will inform future restoration efforts for sagebrush and other plant species by ensuring individuals have the adaptive capacity to endure future drought conditions

    Galactose-Deficient IgA1 in African Americans with IgA Nephropathy: Serum Levels and Heritability

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    Background and objectives: Serum levels of galactose-deficient IgA1 (Gd-IgA1) are elevated and heritable in Caucasian and Asian patients with IgA nephropathy (IgAN), but have not been characterized in African Americans (AA). Our objective was to determine whether serum Gd-IgA1 levels are increased in AA patients with IgAN and whether this is a heritable trait in this group

    Circadian control of fatty acid elongation by SIRT1 protein-mediated deacetylation of acetyl-coenzyme A synthetase 1.

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    The circadian clock regulates a wide range of physiological and metabolic processes, and its disruption leads to metabolic disorders such as diabetes and obesity. Accumulating evidence reveals that the circadian clock regulates levels of metabolites that, in turn, may regulate the clock. Here we demonstrate that the circadian clock regulates the intracellular levels of acetyl-CoA by modulating the enzymatic activity of acetyl-CoA Synthetase 1 (AceCS1). Acetylation of AceCS1 controls the activity of the enzyme. We show that acetylation of AceCS1 is cyclic and that its rhythmicity requires a functional circadian clock and the NAD(+)-dependent deacetylase SIRT1. Cyclic acetylation of AceCS1 contributes to the rhythmicity of acetyl-CoA levels both in vivo and in cultured cells. Down-regulation of AceCS1 causes a significant decrease in the cellular acetyl-CoA pool, leading to reduction in circadian changes in fatty acid elongation. Thus, a nontranscriptional, enzymatic loop is governed by the circadian clock to control acetyl-CoA levels and fatty acid synthesis
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