242 research outputs found

    NASA ELV Payload Safety Program Information Exchange

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    This presentation details the Expendable Launch Vehicle (ELV) Payload Safety Program in its development and plan for implementation. It is an overview of the program's policies, process and requirements

    Frederick Douglass and his Journey from Slavery to Limerick

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    A chronicle and analysis of Frederick Douglass' visit to Limerick (1845

    NASA Expendable Launch Vehicle (ELV) Payload Safety Review Process

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    Issues addressed by this program: (1) Complicated roles and responsibilities associated with multi-partner projects (2) Working relationships and communications between all organizations involved in the payload safety process (3) Consistent interpretation and implementation of safety requirements from one project to the rest (4) Consistent implementation of the Tailoring Process (5) Clearly defined NASA decision-making-authority (6) Bring Agency-wide perspective to each ElV payload project. Current process requires a Payload Safety Working Group (PSWG) for eac payload with representatives from all involved organizations

    Utility of routine screening for alpha-1 antitrypsin deficiency in patients with bronchiectasis

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    Alpha-1 antitrypsin deficiency (AATD) is a cause of bronchiectasis. Guidelines for bronchiectasis from the British Thoracic Society do not recommend to routinely test patients for AATD. In contrast, guidelines for AATD recommend routine screening. This contradiction, in part, results from the lack of data from large studies performing comprehensive screening. We screened 1600 patients with bronchiectasis at two centres in the UK from 2012 to 2016. In total, only eight individuals with AATD were identified representing 0.5% of the overall population. We conclude that routine screening for AATD in bronchiectasis in the UK has a low rate of detection. Further studies are required in different geographical regions, which may have a higher prevalence of AATD.info:eu-repo/semantics/publishedVersio

    ESO 381-47, an early-type galaxy with extended HI and a star forming ring

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    ESO 381-47 is an early type galaxy with an extended HI disk. GALEX and very deep optical images reveal a distinct stellar ring far outside the optical body with a diameter of ~30 kpc, which has undergone recent star formation at 1.8 x 10^-4 Msun/yr/kpc^-2, consistent with other new results which detect low level star formation below the traditional Kennicutt relation in the outer parts of spiral galaxies. The morphology of this galaxy resembles the recently identified class of ultraviolet objects called extended ultraviolet disks, or XUV-disks. New HI observations of this galaxy taken at the ATCA and in the CnB array at the VLA show that the cold gas lies in an extended (diameter ~90 kpc) ring around the central S0 galaxy. The HI data cube can be well modeled by a warped ring. The faint ionized gas in the inner parts of the galaxy is kinematically decoupled from the stars and instead appears to exhibit velocities consistent with the rotation of the HI ring at larger radius. The peak of the stellar ring, as seen in the optical and UV, is slightly displaced to the inside relative to the peak of the HI ring. We discuss the manner in which this offset could be caused by the propagation of a radial density wave through an existing stellar disk, perhaps triggered by a galaxy collision at the center of the disk, or possibly due to a spiral density wave set up at early times in a disk too hot to form a stellar bar. Gas accretion and resonance effects due to a bar which has since dissolved are also considered to explain the presence of the star forming ring seen in the GALEX and deep optical data.Comment: 48 pages, 16 figures, 4 tables. Accepted for publication in the Astronomical Journa

    Testing the use of static chamber boxes to monitor greenhouse gas emissions from wood chip storage heaps

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    This study explores the use of static chamber boxes to detect whether there are fugitive emissions of greenhouse gases (GHGs) from a willow chip storage heap. The results from the boxes were compared with those from 3-m stainless steel probes inserted into the core of the heap horizontally and vertically at intervals. The results from probes showed that there were increases of carbon dioxide (CO2) concentrations in the heap over the first 10 days after heap establishment, which were correlated with a temperature rise to 60 °C. As the CO2 declined, there was a small peak in methane (CH4) concentration in probes orientated vertically in the heap. Static chambers positioned at the apex of the heap detected some CO2 fluxes as seen in the probes; however, the quantities were small and random in nature. A small (maximum 5 ppm) flux in CH4 occurred at the same time as the probe concentrations peaked. Overall, the static chamber method was not effective in monitoring fluxes from the heap as there was evidence that gases could enter and leave around the edges of the chambers during the course of the experiment. In general, the use of standard (25 cm high) static chambers for monitoring fluxes from wood chip heaps is not recommended

    Development of an Experiential Learning Programme for Pharmacy Students

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    Background GPhC standards for the initial education and training of pharmacists state that students should receive practical experience as part of their training, potentially including off-site placements(1). Placements had previously been structured using pre-determined student tasks. An evaluation of these tasks found that they provided a focus to placements but were also sometimes detrimental to learning (2). It was decided to explore a system using an electronic personal portfolio (ePortfolio) and a competency framework as an alternative method for the delivery and assessment of placements. Description of work The aim was to develop an experiential learning programme which uses an ePortfolio and competency framework. To do this, a working group was convened between October 2014 and June 2015 composed of academics, placement providers and MPharm students. Communication was through a combination of face-to-face meetings and email feedback. The group considered: • Scope of the experiential learning programme • Competencies on which the programme would be based • How the programme would be assessed • Support required for students • Support required for placement providers • Support required for academics It was decided that the scope for the programme should include off-site placements, IPL sessions and patient experience opportunities. A bespoke set of ‘Experiential Standards’ was developed for the programme. Support resources were created for students, placement providers and academics. Proposed evaluation A mixed method evaluation is planned. Focus groups (FGs) will be used to allow qualitative exploration of student perceptions. Focus groups will be facilitated using a topic guide which draws from the peer reviewed literature around experiential learning. FGs will be audio recorded and transcribed verbatim before undergoing thematic content analysis. The findings will be used to design a questionnaire which can be used for a larger scale quantitative evaluation which can identify trends and further areas for improvement. References 1. General Pharmaceutical Council. GPhC Standards for the initial education and training of pharmacists [Internet]. General Pharmaceutical Council; 2011 [cited 2016 Feb 22]. Available from: http://www.pharmacyregulation.org/sites/default/files/GPhC_Future_Pharmacists.pdf 2. Moffitt K, Davison K. Do community pharmacy placements support the new integrated approach to pharmacy education? Stakeholder and student perspectives. [Internet]. 2015 [cited 2016 Feb 22]. Available from: http://www.npa.co.uk/wp-content/uploads/2015/09/HEF-Pharmacy-Placements.pd

    Understanding Infrared Galaxy Populations: the SWIRE Legacy Survey

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    We discuss spectral energy distributions, photometric redshifts, redshift distributions, luminosity functions, source-counts and the far infrared to optical luminosity ratio for sources in the SWIRE Legacy Survey. The spectral energy distributions of selected SWIRE sources are modelled in terms of a simple set of galaxy and quasar templates in the optical and near infrared, and with a set of dust emission templates (cirrus, M82 starburst, Arp 220 starburst, and AGN dust torus) in the mid infrared. The optical data, together with the IRAC 3.6 and 4.5 mu data, have been used to determine photometric redshifts. For galaxies with known spectroscopic redshifts there is a notable improvement in the photometric redshift when the IRAC data are used, with a reduction in the rms scatter from 10% in (1+z) to 5%. While further spectroscopic data are needed to confirm this result, the prospect of determining good photometric redshifts for the 2 million extragalactic objects in SWIRE is excellent. The distribution of the different infrared sed types in the L{ir}/L{opt} versus L{ir} plane, where L{ir} and L{opt} are the infrared and optical bolometric luminosities, is discussed. Source-counts at 24, 70 and 160 mu are discussed, and luminosity functions at 3.6 and 24 mu are presented.Comment: 8 pages, 14 figures, to appear in proceedings of 'Spitzer IR Diagnostics Conference, Nov 14-16, 2005

    Global Evidence of Constraints and Limits to Human Adaptation

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    Constraints and limits to adaptation are critical to understanding the extent to which human and natural systems can successfully adapt to climate change. We conduct a systematic review of 1,682 academic studies on human adaptation responses to identify patterns in constraints and limits to adaptation for different regions, sectors, hazards, adaptation response types, and actors. Using definitions of constraints and limits provided by the Intergovernmental Panel on Climate Change (IPCC), we find that most literature identifies constraints to adaptation but that there is limited literature focused on limits to adaptation. Central and South America and Small Islands generally report greater constraints and both hard and soft limits to adaptation. Technological, infrastructural, and ecosystem-based adaptation suggest more evidence of constraints and hard limits than other types of responses. Individuals and households face economic and socio-cultural constraints which also inhibit behavioral adaptation responses and may lead to limits. Finance, governance, institutional, and policy constraints are most prevalent globally. These findings provide early signposts for boundaries of human adaptation and are of high relevance for guiding proactive adaptation financing and governance from local to global scales
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