199 research outputs found

    A Data Cube Extraction Pipeline for a Coronagraphic Integral Field Spectrograph

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    Project 1640 is a high contrast near-infrared instrument probing the vicinities of nearby stars through the unique combination of an integral field spectrograph with a Lyot coronagraph and a high-order adaptive optics system. The extraordinary data reduction demands, similar those which several new exoplanet imaging instruments will face in the near future, have been met by the novel software algorithms described herein. The Project 1640 Data Cube Extraction Pipeline (PCXP) automates the translation of 3.8*10^4 closely packed, coarsely sampled spectra to a data cube. We implement a robust empirical model of the spectrograph focal plane geometry to register the detector image at sub-pixel precision, and map the cube extraction. We demonstrate our ability to accurately retrieve source spectra based on an observation of Saturn's moon Titan.Comment: 35 pages, 15 figures; accepted for publication in PAS

    Using Genesis 34 in Christian Ethics: A Case Study in the Christian Ethical Appropriation of Old Testament Narratives

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    This thesis aims to set out parameters within which Christian ethical reappropriations of Old Testament Narratives can take place. Chapter One sets out the philosophical foundations for the project making special use of the work of Paul Ricoeur. It is argued that the notion of a narrative-self is crucial to understanding how it is that story can ethically shape its audience. Four specific ways in which it does this are set out. Chapter Two argues that story is far more important in OT ethics than has usually been appreciated. It moves' on to defend a hermeneutical model suggested by N. T. Wright for Christian interpretation of the OT. Having set forth the hermeneutical method in the first two chapters, Chapters Three to Five attempt to apply it to a case study. Chapter Three overviews the ethical use that has been made of Genesis 34 in the history of interpretation, whilst Chapter Four proposes an interpretation. Chapter Five is an attempt to interpret Genesis 34 within the context of the biblical metanarrative. It is argued that this sheds new light on appropriate and inappropriate Christian ethical uses of the chapter

    Noninvasive options for 'wearing-off' in Parkinson's disease: a clinical consensus from a panel of UK Parkinson's disease specialists

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    In the past 4 years, two adjunctive treatment options to levodopa have been licensed for use in the UK in patients with Parkinson's disease (PD) and motor fluctuations: opicapone, a third-generation catechol-O-methyl transferase inhibitor, and safinamide, a monoamine oxidase B inhibitor. This clinical consensus outlines the practical considerations relating to motor fluctuations and managing wearing-off in patients with PD, and provides a clinical insight to adjunctive treatment options, including opicapone and safinamide. Practice-based opinion was provided from a multidisciplinary steering Group of eight UK-based movement disorder and PD specialists, including neurologists, geriatricians and a nurse specialist, from England, Scotland and Wales

    Current status and unanswered questions on the use of Denosumab in giant cell tumor of bone

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    Denosumab is a monoclonal antibody to RANK ligand approved for use in giant cell tumour (GCT) of bone. Due to its efficacy, Denosumab is recommended as the first option in inoperable or metastatic GCT. Denosumab has also been used pre-operatively to downstage tumours with large soft tissue extension to allow for less morbid surgery. The role of Denosumab for conventional limb GCT of bone is yet to be defined. Further studies are required to determine whether local recurrence rates will be decreased with the adjuvant use of Denosumab along with surgery. The long term use and toxicity of this agent is unknown as is the proportion of patients with primary or secondary resistance. It is advised that complicated cases of GCT requiring Denosumab treatment should be referred and followed up at expert centres. Collaborative studies involving further clinical trials and rigorous data collection are strongly recommended to identify the optimum use of this drug

    'This was a Conradian world I was entering': Postcolonial river-journeys beyond the Black Atlantic in Caryl Phillips's work

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    Caryl Phillips has been accused of replicating the stereotyped view of a timeless, ahistorical Africa that Paul Gilroy puts forward in his paradigm of the Black Atlantic. Yet this article shows that Crossing the River and Phillips’s essays about Africa suggest ways in which Gilroy’s important paradigm of the black Atlantic could be broadened to become more inclusive of writing about Africa. Phillips draws inspiration from writers such as V S Naipaul, Chinua Achebe, and especially Joseph Conrad, to update the literary journey upriver and make it relevant to contemporary West African issues. A complex interplay of racial identities occurs when people from the African diaspora travel to Africa; this is a key preoccupation for Phillips when he rewrites Conrad. During the course of his river-journeys, Phillips meditates upon the complexities of being a black Westerner in Africa, examines the memory of slavery, colonialism and postcolonial unrest, problematises diasporan attempts to ‘return’ to Africa, and recognises the longstanding modernity of African countries

    Primary repair versus surgical and transcatheter palliation in infants with tetralogy of Fallot

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    Objectives Treatment of infants with tetralogy of Fallot (ToF) has evolved in the last two decades with increasing use of primary surgical repair (PrR) and transcatheter right ventricular outflow tract palliation (RVOTd), and fewer systemic-to-pulmonary shunts (SPS). We aim to report contemporary results using these treatment options in a comparative study. Methods This a retrospective study using data from the UK National Congenital Heart Disease Audit. All infants (n=1662, median age 181 days) with ToF and no other complex defects undergoing repair or palliation between 2000 and 2013 were considered. Matching algorithms were used to minimise confounding due to lower age and weight in those palliated. Results Patients underwent PrR (n=1244), SPS (n=311) or RVOTd (n=107). Mortality at 12 years was higher when repair or palliation was performed before the age of 60 days rather than after, most significantly for primary repair (18.7% vs 2.2%, P<0.001), less so for RVOTd (10.8% vs 0%, P=0.06) or SPS (12.4% vs 8.3%, P=0.2). In the matched groups of patients, RVOTd was associated with more right ventricular outflow tract (RVOT) reinterventions (HR=2.3, P=0.05 vs PrR, HR=7.2, P=0.001 vs SPS) and fewer pulmonary valve replacements (PVR) (HR=0.3 vs PrR, P=0.05) at 12 years, with lower mortality after complete repair (HR=0.2 versus PrR, P=0.09). Conclusions We found that RVOTd was associated with more RVOT reinterventions, fewer PVR and fewer deaths when compared with PrR in comparable, young infants, especially so in those under 60 days at the time of the first procedure

    In The Shadows: Conservative Epistemology and Ideological Value

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    This article intervenes in the debate about the nature of conservatism. Some contributors to this debate have claimed that this ideology can be defined as an adjectival disposition. They claim, that is, that a conservative possesses an attitude towards shared values rather than a distinct set of substantive values. The following discussion interrogates this account of conservatism and concludes that it can only be coherent if we ignore the epistemological limits of conservative thinking

    Microdeletion del(22)(q12.2) encompassing the facial development-associated gene, MN1 (meningioma 1) in a child with Pierre-Robin sequence (including cleft palate) and neurofibromatosis 2 (NF2): a case report and review of the literature

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    <p>Abstract</p> <p>Background</p> <p>Pierre-Robin sequence (PRS) is defined by micro- and/or retrognathia, glossoptosis and cleft soft palate, either caused by deformational defect or part of a malformation syndrome. Neurofibromatosis type 2 (NF2) is an autosomal dominant syndrome caused by mutations in the <it>NF2 </it>gene on chromosome 22q12.2. NF2 is characterized by bilateral vestibular schwannomas, spinal cord schwannomas, meningiomas and ependymomas, and juvenile cataracts. To date, NF2 and PRS have not been described together in the same patient.</p> <p>Case presentation</p> <p>We report a female with PRS (micrognathia, cleft palate), microcephaly, ocular hypertelorism, mental retardation and bilateral hearing loss, who at age 15 was also diagnosed with severe NF2 (bilateral cerebellopontine schwannomas and multiple extramedullary/intradural spine tumors). This is the first published report of an individual with both diagnosed PRS and NF2. High resolution karyotype revealed 46, XX, del(22)(q12.1q12.3), FISH confirmed a deletion encompassing <it>NF2</it>, and chromosomal microarray identified a 3,693 kb deletion encompassing multiple genes including <it>NF2 </it>and <it>MN1 </it>(meningioma 1).</p> <p>Five additional patients with craniofacial dysmorphism and deletion in chromosome 22-adjacent-to or containing <it>NF2 </it>were identified in PubMed and the DECIPHER clinical chromosomal database. Their shared chromosomal deletion encompassed <it>MN1</it>, <it>PITPNB </it>and <it>TTC28</it>. <it>MN1</it>, initially cloned from a patient with meningioma, is an oncogene in murine hematopoiesis and participates as a fusion gene (<it>TEL</it>/<it>MN1</it>) in human myeloid leukemias. Interestingly, <it>Mn1</it>-haploinsufficient mice have abnormal skull development and secondary cleft palate. Additionally, <it>Mn1 </it>regulates maturation and function of calvarial osteoblasts and is an upstream regulator of <it>Tbx22</it>, a gene associated with murine and human cleft palate. This suggests that deletion of <it>MN1 </it>in the six patients we describe may be causally linked to their cleft palates and/or craniofacial abnormalities.</p> <p>Conclusions</p> <p>Thus, our report describes a <it>NF2</it>-adjacent chromosome 22q12.2 deletion syndrome and is the first to report association of <it>MN1 </it>deletion with abnormal craniofacial development and/or cleft palate in humans.</p
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