939 research outputs found

    Determination of azimuth angle, incidence angle, and contact-potential difference for low-energy electron-diffraction fine-structure measurements

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    Low-energy electron-diffraction fine-structure data can often have relatively large inconsistencies associated with the electron-beam incidence conditions. This is in part due to the difficulties associated with working with electrons in the range 0–40 eV and in part due to the crystal being oriented azimuthally before being put in the vacuum system. The angle of incidence is often measured optically, but the optical and electron paths need not coincide if residual magnetic fields are present. We describe a technique for determining the angles of incidence and azimuth from the data themselves. This relies upon two factors: the ability to vary the azimuth angle continuously and the ability to see two sets of fine-structure features on one I-V scan. This technique is applied to fine-structure data obtained from clean Cu(001) and O/Cu(001) surfaces. We hope that the technique described will help give confidence to those collecting such data that these angles can be uniquely determined and that the data can be usefully analyzed. The uncertainty of not having a technique for this purpose has prevented groups from publishing such data in the past

    Effects of local reinforcement on nozzles in dished ends

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    The results of a parametric design study, to determine the optimum diameter of reinforcing pad for nozzles in the knuckle region of an ellipsoidal pressure vessel head are presented herein. The study utilised a linear elastic finite element model, created using ANSYS finite element analysis software. Nozzle parameters of diameter, offset, and wall thickness were varied to ensure the results obtained were achieved through a thorough analysis. Optimum pad sizes were obtained for thrust, in plane moment and out-of-plane moment nozzle loads. Design curves were produced, allowing maximum permitted applied stress, to be calculated for any nozzle size subject to one of the three loading conditions. Recommendations for allowable offset and treatment of loading combinations are also presented

    The development of open/distance learning in Finland and the UK: A Comparative case study

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    This article is concerned with the provision of open and distance learning by the higher education sectors in two countries, the UK and Finland. The central contention is that more strategic thought must be given to this issue if the potential benefits of such learning are to be maximized. The article considers in detail institutional practice in one UK university and compares it to practice in a Finnish institution to ascertain whether procedures and practices adopted in Finland might inform policies in UK universities. By way of conclusion, it is suggested that higher education institutions in both countries need to explore the importance of improved networking, develop better quality-assurance procedures and introduce changes in pedagogic practice

    Measuring intrinsic value – how to stop worrying and love economics

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    This paper seeks to transcend entrenched misunderstandings between economists and arts policymakers, leaders and funders. These misunderstandings, which have long dogged discussion on arts funding in the UK, are most evident in the long-running debate about ‘instrumental’ and ‘intrinsic’ approaches to public expenditure on culture and the arts. As a general theory of public choice, economics provides tools for measuring the intrinsic as well as instrumental value of art in a way that is commensurable with other calls on the public purse. The reluctance to use rigorous economic methods has hindered rather than helped the case for the arts. This paper offers a provocative reconsideration of the outdated and poorly-informed prejudices which lie behind this reluctance. This is a prepublication draft. A version has been published electronically by Mission Models Money and can be accessed at http://www.missionmodelsmoney.org.uk/page.php?id=34cultural economics; creative industries; innovation; internet

    Learning journalistic opinion genres using CLIL methodology

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    The Faculty of Business and Communication recently started an internationalization process that, in two year’s time, will allow all undergraduate students (studying Journalism, Audiovisual Communication, Advertising and Public Relations, Business and Marketing) to take 25% of their subjects in English using CLIL methodology. Currently, Journalism is the degree course with the greatest percentage of CLIL subjects, for example Current Affairs Workshop, a subject dedicated to analyzing current news using opinion genres. Moreover, because of the lack of other subjects offered in English, ERASMUS students have to take some journalism subjects in order to complete their international passport, and one of the classes they choose is the Current Affairs Workshop. The aim of this paper is to explore how CLIL methodology can be useful for learning journalistic opinion genres (chat-shows, discussions and debates) in a subject where Catalan Communication students –with different levels of English- share their knowledge with European students of other social disciplines. Students work in multidisciplinary groups in which they develop real radio and TV programs, adopting all the roles (moderator, technician, producer and participants), analyzing daily newspapers and other sources to create content, based on current affairs. This paper is based on the participant observation of the lecturers of the subject, who have designed different activities related to journalistic genres, where students can develop their skills according to the role they play in every assignment. Examples of successful lessons will be given, in addition to the results of the course: both positive and negative. Although the objective of the course is to examine professional routines related to opinion genres, and students are not directly graded on their level of English, the Catalan students come to appreciate how they finally overcome their fear of working in a foreign language. This is a basic result of their experience

    JNCC Offshore Natura Survey : Anton Dohrn Seamount and East Rockall Bank areas of search : 2009/03-JNCC Cruise Report

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    This cruise report summarises operations and initial observations onboard the M/V Franklin during cruise 2009/03-JNCC on behalf of the Joint Nature Conservation Committee (JNCC). The cruise took place between the 1st and 29th of July 2009 and surveyed two Areas of Search (AoS) for offshore Special Areas of Conservation (SACs): Anton Dohrn Seamount located 155km west of the St Kilda archipelago, and East Rockall Bank located 260km west of the St Kilda archipelago (Figure 1). The main aims of the survey were to acquire acoustic and photographic “ground-truthing” data to enable geological, geomorphological and biological characterisation of the Anton Dohrn Seamount and East Rockall Bank AoS. Specifically, the data acquired will lead to the production of broadscale habitat maps, the identification and description of Annex I reef habitats with particular attention to the occurrence of bedrock, stony and biogenic reef, to identify and record any anthropogenic impacts in the areas of search and finally to evaluate data acquisition methods, techniques and equipment. The work programme was highly successful with 215 line kilometres of multibeam echosounder and 10 photographic “ground-truthing” sites acquired in the Anton Dohrn Seamount AoS, and 692 line kilometres of multibeam echosounder and 168 line kilometres of sidescan sonar data and 17 photographic “ground-truthing” sites acquired in the East Rockall Bank AoS. No physical sea-bed samples were acquired during this cruise. The data revealed the flanks and area immediately adjacent to Anton Dohrn Seamount to comprise predominantly gravel-rich sediment with bedrock outcropping on the steeper sections of the Seamount flanks. East Rockall Bank comprised predominantly gravelly muddy sand on the eastern flank of the Bank with gravel- and sand-rich sediments dominating the crest of the Bank. Interestingly, the parasitic cones surveyed within the Anton Dohrn area of search comprised predominantly corals, including large gorgonian species, small bamboo coral, the soft coral Anthomastus sp. and the antipatharian Leiopathes sp. Significant bedrock reef was encountered during the course of this cruise along an escarpment located on the eastern flank of Rockall Bank roughly coincident with the 500m bathymetric contour. This laterally extensive feature primarily comprises volcanic bedrock with possible sedimentary bedrock cropping out at sea bed colonised by large stylsaterid hydrocorals and sponges. Preliminary observations and interpretation of the data acquired during the course of this cruise suggest that several sites may fit the definition of Annex I reef under the EC Habitats Directive. If they fulfil the criteria for Annex I reef, they will be assessed against site selection criteria as possible areas for consideration as SACs

    Identification and structural characterisation of a partially arabinosylated lipoarabinomannan variant isolated from a Corynebacterium glutamicum ubiAmutant

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    Arabinan polysaccharide side-chains are present in both Mycobacterium tuberculosis and Corynebacterium glutamicum in the heteropolysaccharide arabinogalactan (AG), and in M. tuberculosis in the lipoglycan, lipoarabinomannan (LAM). Herein, we show by quantitative sugar and glycosyl linkage analysis that C. glutamicum possesses a much smaller LAM version, Cg-LAM, characterised by single t-Araf residues linked to th

    DTI Strategic Environmental Assessment Area 4 (SEA4) : sub seabed geology

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    The SEA 4 region is underlain by continental crust situated on the north-western part of the Eurasian tectonic plate. The oldest continental crust >590Ma (Pre-Cambrian) of interest to oil production, it is divided by a major fault, the Moine Thrust, into ages ranging in age from >2500Ma (Archaean) to the west in which potentially commercial hydrocarbons been discovered and 2500 - 590 Ma (Proterozoic) to the east which is not currently prospective for commerciallyproduced hydrocarbons. The <590Ma sedimentary basins and intervening highs have evolved from pre-, syn- and postdepositional responses to deformation during crustal compression and extension. Many of the modern regional crustal structures retain a NE-SW trend, inherited from events 440-410Ma year ago (Caledonian Orogeny). The results from <65Ma regional NW-SE trending deformation events are also included within the major basin structural configurations. During 60-50 Ma (Late Paleocene to Early Eocene) the region was affected by uplift and in the NW by extrusion of thick volcanic lavas and intrusion of igneous sills. Interactions between historically significant shifts of long-term global climate cooling, an increase in the short-term periodicity and intensity of global climate change and changes to the rates and orientation of crust deformation have been particularly important from 25Ma to the present day (Neogene to Quaternary). These interactions have driven global-to-local changes to basin geological structure, marine circulation, sea level and sediment supply and removal rates and have resulted in the evolutionary changes to submarine basin geometries and lithologies. The modern seabed habitat has thus resulted from the remoulding of inherited basin geometries and lithologies by the processes affecting seabed. The structural history of the region has created a wide variety of potential hydrocarbon trapping mechanisms. The 154-136Ma (Late Jurassic, Kimmeridgian to Ryazanian) Kimmeridge Clay Formation is the principal source rock of the area. The Foinaven and Schiehallion oilfields started production in late 1997 and 1998 respectively both from 60-55Ma (Upper Paleocene) sandstone reservoirs. Geological and technical problems have so far prevented the development of the massive 440-390Ma (Devono-Carboniferous) Clair Field which is the largest undeveloped oilfield on the UK continental shelf. Other hydrocarbon accumulations have been discovered in 245-208Ma (Triassic), 208-146Ma (Jurassic) and 146-65Ma (Cretaceous) intervals in the West Shetland area in the most prospective parts of the SEA 4 region

    Glycoproteomic studies of IgE from a novel hyper IgE syndrome linked to PGM3 mutation

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    International audienceGlycans serve as important regulators of antibody activities and half-lives. IgE is the most heavily glycosylated antibody, but in comparison to other antibodies little is known about its glycan structure function relationships. We therefore describe the site specific IgE glycosylation from a patient with a novel hyper IgE syndrome linked to mutations in PGM3, which is an enzyme involved in synthesizing UDP-GlcNAc, a sugar donor widely required for glycosylation. A two-step method was developed to prepare two IgE samples from less than 1 mL of serum collected from a patient with PGM3 mutation and a patient with atopic dermatitis as a control subject. Then, a glycoproteomic strategy was used to study the site-specific glycosylation. No glycosylation was found at Asn264, whilst high mannose glycans were only detected at Asn275, tri-antennary glycans were exclusively observed at Asn99 and Asn252, and non-fucosylated complex glycans were detected at Asn99. The results showed similar glycosylation profiles between the two IgE samples. These observations, together with previous knowledge of IgE glycosylation, imply that IgE glycosylation is similarly regulated among healthy control, allergy and PGM3 related hyper IgE syndrome

    Personal Budgets for all? An Action Research Study on Implementing Self-Directed Support in Mental Health Services

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    Full version unavailable due to 3rd party copyright restrictionsBackground: The recent political agenda for health and social care requires more client-centred, personalised services. Self-Directed Support, encompassing Direct Payments and Personal Budgets, is designed to provide people with more choice and control over how their needs and outcomes are met. Personal budgets are available for eligible people however take-up is low in mental health services. Research Aims: The study was set in an NHS Health and Social care Trust covering a large predominantly rural area.The aims of this study were: (1) to develop Self-Directed Support within one mental health Trust and; (2) understand more fully service user and carer involvement in the process. Methods: This study used action research incorporating: a spiral methodological framework; a project steering group; and service user and carer co-researchers. Data collection took place between 2007 and 2011, and the project ran in three sequential spirals using qualitative methods to triangulate the findings and identify any divergence in data. Findings: Findings showed that organisational language, structures and power relations provide barriers to effective involvement of service users and carers. Action research is very relevant for researching projects involving transformational change in health and social care, and including service user and carer co-researchers adds rich and authentic data. Findings concerning Self-Directed Support concluded that it afforded people more choice, flexibility and control than previous policy, and an improved quality of life. Concerns about bureaucratic processes, lack of information and knowledge of Self-Directed Supportwere found. Workforce concerns about safety of service users under Self-Directed Support and cultural shifts to more democratic methods of working were reported. Conclusions: This study's results correspond closely with national studies: staff attitudes and culture need changing to empower people to take up Self-directed Support. Concerns about quality assurance and safety are prevalent. Mental health services pose additional obstacles in their structures and reliance on the medical model. Social care knowledge cannot be assumed for all mental health Trust practitioners.Devon Partnership Trus
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