15 research outputs found

    Finishing the euchromatic sequence of the human genome

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    The sequence of the human genome encodes the genetic instructions for human physiology, as well as rich information about human evolution. In 2001, the International Human Genome Sequencing Consortium reported a draft sequence of the euchromatic portion of the human genome. Since then, the international collaboration has worked to convert this draft into a genome sequence with high accuracy and nearly complete coverage. Here, we report the result of this finishing process. The current genome sequence (Build 35) contains 2.85 billion nucleotides interrupted by only 341 gaps. It covers ∼99% of the euchromatic genome and is accurate to an error rate of ∼1 event per 100,000 bases. Many of the remaining euchromatic gaps are associated with segmental duplications and will require focused work with new methods. The near-complete sequence, the first for a vertebrate, greatly improves the precision of biological analyses of the human genome including studies of gene number, birth and death. Notably, the human enome seems to encode only 20,000-25,000 protein-coding genes. The genome sequence reported here should serve as a firm foundation for biomedical research in the decades ahead

    The COMET Handbook: version 1.0

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    New tellurium-containing ring systems

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    The recent discovery of a suitable synthesis of the monoanionic ditelluroimidodiphosphinate ligands [TePR2NPR2Te]− (R = Ph, iPr, tBu) has facilitated investigations of the fundamental chemistry of these chelating inorganic ligands. This article is focused on aspects of that chemistry in which the behaviour of this ditelluro PNP ligand differs from that of the well-studied dithio and diseleno congeners. The emphasis is on new tellurium-containing ring systems formed in: (a) redox transformations and (b) the synthesis of metal complexes.peerReviewe

    Enhancing rural public transport accessibility through implementing a smart scan-on m-ticketing solution: a United Kingdom case study approach within deregulated environments

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    The aim of this paper is to demonstrate how two United Kingdom (UK) Local Authorities (Hertfordshire and Northamptonshire), the two Universities of Hertfordshire and Northampton and a public transport provider (UNO) have worked in partnership to develop a smart scan-on m-ticketing solution, which integrates into a wider ‘smart city’ solution delivering social good through connected value propositions. Based on the initial success of a Hertfordshire pilot, a specific objective of this work is to establish smart integrated multi-operator/modal solutions. This pilot is subsequently being collaboratively expanded upon, through the UK Department for Transport funded ‘Network Northamptonshire Total Transport’ initiative, a transformative project to improve connectivity, integration and accessibility for rural transport networks. This forms part of the recently signed ‘England’s Economic Heartland’ tri-county alliance agreement, which aims to work collaboratively across three local authority regions (Buckinghamshire, Oxfordshire and Northamptonshire), consolidating £3bn of spending. This provides a further future platform for innovative transport solutions being rolled out across wider geographical areas

    Possible control of introduced giant African land snails (Achatina spp.) by the reintroduced endemic skink Leiolopisma telfairii, Ile aux Aigrettes, Mauritius

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    The giant African land snail (Achatinafulica) is one of the world’s worst invasive species, out‐competing endemic snails, consuming native vegetation and potentially altering nutrient cycles. Attempts to eradicate the snail from islands have only been successful with incipient populations. We present correlative evidence that native island predators may act as an effective control agent for the snail. In 2000 a population of between 37,300 and 45,100 African land snails was estimated on the 26ha nature reserve island of Ile aux Aigrette, Mauritius. Between 2006 and 2007, 260 endemic Telfair’s skink Leiolopisma telfairii were reintroduced to the reserve. Snail population surveys in 2008 and 2009 showed that the introduced snail population had declined to 5,569 (± 3,630) and 6,871 (±5,379), respectively. Previous studies showed that the introduced snails were selective over other invertebrate prey items. We suggest that predation by the endemic skink has been an important causal factor behind the snail population decline

    Possible control of introduced giant African land snails (Achatina spp.) by the reintroduced endemic skink Leiolopisma telfairii, Ile aux Aigrettes, Mauritius

    No full text
    The giant African land snail (Achatina fulica) is one of the world’s worst invasive species, out‐competing endemic snails, consuming native vegetation and potentially altering nutrient cycles. Attempts to eradicate the snail from islands have only been successful with incipient populations. We present correlative evidence that native island predators may act as an effective control agent for the snail. In 2000 a population of between 37,300 and 45,100 African land snails was estimated on the 26ha nature reserve island of Ile aux Aigrette, Mauritius. Between 2006 and 2007, 260 endemic Telfair’s skink Leiolopisma telfairii were reintroduced to the reserve. Snail population surveys in 2008 and 2009 showed that the introduced snail population had declined to 5,569 (± 3,630) and 6,871 (±5,379), respectively. Previous studies showed that the introduced snails were selective over other invertebrate prey items. We suggest that predation by the endemic skink has been an important causal factor behind the snail population decline

    A longitudinal assessment of trial protocols approved by research ethics committees: the Adherance to SPIrit REcommendations in the UK (ASPIRE-UK) study

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    Background To assess the quality of reporting of RCT protocols approved by UK research ethics committees before and after the publication of the Standard Protocol Items: Recommendations for Interventional Trials (SPIRIT) guideline. Methods We had access to RCT study protocols that received ethical approval in the UK in 2012 (n=103) and 2016 (n=108). From those, we assessed the adherence to the 33 SPIRIT items (i.e. a total of 64 components of the 33 SPIRIT items). We descriptively analysed the adherence to SPIRIT guidelines as proportion of adequately reported items (median and interquartile range [IQR]) and stratified the results by year of approval and sponsor. Results The proportion of reported SPIRIT items increased from a median of 64.9% (IQR, 57.6–69.2%) in 2012 to a median of 72.5% (IQR, 65.3–78.3%) in 2016. Industry-sponsored RCTs reported more SPIRIT items in 2012 (median 67.4%; IQR, 64.1–69.4%) compared to non-industry-sponsored trials (median 59.8%; IQR, 46.5–67.7%). This gap between industry- and non-industry-sponsored trials increased in 2016 (industry-sponsored: median 75.6%; IQR, 71.2–79.0% vs non-industry-sponsored: median 65.3%; IQR, 51.6–76.3%). Conclusions The adherence to SPIRIT guidelines has improved in the UK from 2012 to 2016 but remains on a modest level, especially for non-industry-sponsored RCTs

    Palladium and platinum complexes of tellurium-containing imidodiphosphinate ligands : nucleophilic attack of Li[((PPr2)-Pr-i)((TePPr2)-Pr-i)N] on coordinated 1,5-cyclooctadiene

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    Homoleptic group 10 complexes of ditellurido PNP (PNP = imidodiphosphinate), heterodichalcogenido PNP and monotellurido PNP ligands, M[((TePPr2)-Pr-i)(2)N](2) (1: M = Pd; 2: M = Pt), M[((EPPr2)-Pr-i)((TePPr2)-Pr-i)N](2) (3: M = Pd, E = Se; 4: M = Pt, E = Se; 5: M = Pd, E = S; 6: M = Pt, E = S) and M[((PPr2)-Pr-i)((TePPr2)-Pr-i)N](2) (7: M = Pd; 8: M = Pt), respectively, were prepared by metathesis between alkali-metal derivatives of the appropriate ligand and MCl2(COD) in THF. Complexes 1-8 were characterised in solution by multinuclear (P-31, Se-77, Te-125 and Pt-195) NMR spectroscopy and, in the case of 1, 2, trans-7, cis-7 and trans-8, in the solid state by X-ray crystallography. The square-planar complexes 3-6 are formed as a mixture of cis- and trans-isomers on the basis of NMR data. The cis and trans isomers of 7 were separated by crystallisation from different solvents. In addition to trans-8, the reaction of Li[((PPr2)-Pr-i)((TePPr2)-Pr-i)N] with MCl2(COD) produced the heteroleptic complex Pt[((PPr2)-Pr-i)((TePPr2)-Pr-i)N][sigma:eta(2)-C8H12((PPr2NPPr2Te)-Pr-i-Pr-i)] (9) resulting from nucleophilic attack on coordinated 1,5-cyclooctadiene. Complex 9 was identified by multinuclear (C-13, P-31, Te-125 and Pt-195) NMR spectroscopy, which revealed a mixture of geometric isomers, and by X-ray crystallography
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