254 research outputs found

    TBLC featured resource - graduate script project

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    This is a final year module for a cohort of approx. 30 scriptwriting students that are about to begin their final undergraduate script project. The module runs for a single semester, ten weeks, and is the first time any of the students will have experienced TBL. The first five weeks are taught using TBL as outlined below, with the remaining time devoted to one-to-one tutorials once the writing process has begun. The intention is to promote the necessary discussion and application of scriptwriting skills in advance of the writing of their scripts and critical reflection

    Multiphase CFD Analysis of Direct Contact Condensation Flow Regimes in a Large Water Pool

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    This work considers the Pressure Suppression Chamber, a component of the Reactor Core Isolation Cooling System that is instrumental in maintaining core cooling capabilities during conditions such as the station blackout that occurred at Fukushima Daiichi. In previous experimental work at the NHTS Suppression Chamber facility, bulk pool temperature stratification was assessed during long term transients consistent with conditions at Fukushima. In this work, short-term mixing behavior in a BWR Suppression Chamber system is assessed using computational fluid dynamics. In this work, direct contact condensation was modeled within STAR-CCM+ utilizing experimental conditions from Test Case #4 at the NHTS Suppression Chamber experimental facility. The Eulerian multiphase segregated flow model with the 2D axisymmetric formulation was employed. The steam-water condensation interaction was modelled utilizing the Hughes-Duffey Nusselt number correlation. The phase interface saturation temperature was treated as variable and was computed through the use of built in IAPWS steam tables within STARCCM+. Simulations were completed for an initial steam bubble formation and deformation phase within the Suppression Pool, accounting for a 48 ms overall transient. It was found that the dynamics of steam bubble formation and deformation process most closely mirrors the bubbling direct contact condensation flow regime which was observed experimentally at the simulation initial conditions. However, the reason for the presence of this flow regime in the simulation was found to be attributable to an insufficient rate of condensation with the achieved condensation rate of 45.3 g/s only slightly exceeding the inlet steam mass flow rate to the Sparger of 45 g/s. The formation of a hot spot near the Suppression Chamber Sparger outlet likely caused this flow regime to be observed experimentally. This led to the conclusion that better spatial resolution of the water temperature obtained from thermocouples near the Sparger outlet at the NHTS Suppression Pool facility would allow for a more realistic setting of initial conditions for future simulations of this kind. Also, based on the rapid pressure changes observed from the simulation presented in this work, an increase in measurement frequency of pressure instrumentation to at least 500 Hz was also recommended

    Testing the effectiveness of protocols for removal of common conservation treatments for radiocarbon dating

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    To achieve a reliable radiocarbon date for an object, any contamination that may be of a different age must be removed prior to dating. Samples that have been conserved with treatments such as adhesives, varnishes or consolidants can pose a particular challenge to radiocarbon dating. At the Oxford Radiocarbon Accelerator Unit (ORAU), common examples of such substances encountered include shellac, the acrylic polymers Paraloid B-67 and B-72, and vinyl acetate-derived polymers (e.g. ‘PVA’). Here, a non-carbon containing absorbent substrate called Chromosorb® was deliberately contaminated with a range of varieties or brands of these conservation treatments, as well as two cellulose nitrate lacquers. A selection of chemical pretreatments was tested for their efficiency at removing them. While the varieties of shellac and Paraloid tested were completely removed with some treatments (water/methanol and acetone/methanol/chloroform sequential washes, respectively), no method was found that was capable of completely removing any of the vinyl acetate-derived materials or the cellulose nitrate lacquers. While Chromosorb is not an exact analogue of archaeological wood or bone, for example, this study suggests that it may be possible to remove aged shellac and Paraloid from archaeological specimens with standard organic-solvent-acid-base-acid pretreatments, but it may be significantly more difficult to remove vinyl acetate-derived polymers and cellulose nitrate lacquers sufficiently to provide reliable radiocarbon dates. The four categories of conservation treatment studied demonstrate characteristic FTIR spectra, while highlighting subtle chemical and molecular differences between different varieties of shellac, Paraloid and cellulose nitrate lacquers, and significant differences between the vinyl acetate derivatives

    The Bulletin, School of Nursing Diploma Program Alumni Association, 1980

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    Alumni Calendar A Letter from the President Officers and Chairpersons Report of Questionnaire Responses Annual Reports Alumni Benefits Resume of Alumni Association Meetings Committee Reports Nursing Alumni Office Profiles in Courage Credentialing in Nursing Ways and Means Committee Report A.N.A. Convention Report College of Allied Health Sciences Award Harriet Werley Honored The Conchologist Class News Marriages Births In Memoriam Alumni Notices School of Nursing Notice

    Quantifying the extremity of windstorms for regions featuring infrequent events

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    This paper introduces the Distribution-Independent Storm Severity Index (DI-SSI). The DI-SSI represents an approach to quantify the severity of exceptional surface wind speeds of large scale windstorms that is complementary to the SSI introduced by Leckebusch et al. While the SSI approaches the extremeness of a storm from a meteorological and potential loss (impact) perspective, the DI-SSI defines the severity in a more climatological perspective. The idea is to assign equal index values to wind speeds of the same singularity (e.g. the 99th percentile) under consideration of the shape of the tail of the local wind speed climatology. Especially in regions at the edge of the classical storm track, the DI-SSI shows more equitable severity estimates, e.g. for the extra-tropical cyclone Klaus. In order to compare the indices, their relation with the North Atlantic Oscillation is studied, which is one of the main large scale drivers for the intensity of European windstorms

    Parents’ experiences and perceptions of the acceptability of a whole-hospital, pro-active electronic pediatric early warning system (the DETECT study): A qualitative interview study

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    BackgroundFailure to recognize and respond to clinical deterioration in a timely and effective manner is an urgent safety concern, driving the need for early identification systems to be embedded in the care of children in hospital. Pediatric early warning systems (PEWS) or PEW scores alert health professionals (HPs) to signs of deterioration, trigger a review and escalate care as needed. PEW scoring allows HPs to record a child's vital signs and other key data including parent concern.AimThis study aimed to explore the experiences and perceptions of parents about the acceptability of a newly implemented electronic surveillance system (the DETECT surveillance system), and factors that influenced acceptability and their awareness around signs of clinical deterioration and raising concern.MethodsDescriptive, qualitative semi-structured telephone interviews were undertaken with parents of children who had experienced a critical deterioration event (CDE) (n = 19) and parents of those who had not experienced a CDE (non-CDE parents) (n = 17). Data were collected between February 2020 and February 2021.ResultsQualitative data were analyzed using generic thematic analysis. Analysis revealed an overarching theme of trust as a key factor that underpinned all aspects of children's vital signs being recorded and monitored. The main themes reflect three domains of parents' trust: trust in themselves, trust in the HPs, and trust in the technology.ConclusionParents' experiences and perceptions of the acceptability of a whole-hospital, pro-active electronic pediatric early warning system (The DETECT system) were positive; they found it acceptable and welcomed the use of new technology to support the care of their child

    Clinical utility and acceptability of a whole-hospital, pro-active electronic paediatric early warning system (the DETECT study): a prospective e-survey of parents and health professionals.

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    BackgroundPaediatric early warning systems (PEWS) are a means of tracking physiological state and alerting healthcare professionals about signs of deterioration, triggering a clinical review and/or escalation of care of children. A proactive end-to-end deterioration solution (the DETECT surveillance system) with an embedded e-PEWS that included sepsis screening was introduced across a tertiary children's hospital. One component of the implementation programme was a sub-study to determine an understanding of the DETECT e-PEWS in terms of its clinical utility and its acceptability.AimThis study aimed to examine how parents and health professionals view and engage with the DETECT e-PEWS apps, with a particular focus on its clinical utility and its acceptability.MethodA prospective, closed (tick box or sliding scale) and open (text based) question, e-survey of parents (n = 137) and health professionals (n = 151) with experience of DETECT e-PEWS. Data were collected between February 2020 and February 2021.ResultsQuantitative data were analysed using descriptive and inferential statistics and qualitative data with generic thematic analysis. Overall, both clinical utility and acceptability (across seven constructs) were high across both stakeholder groups although some challenges to utility (e.g., sensitivity of triggers within specific patient populations) and acceptability (e.g., burden related to having to carry extra technology) were identified.ConclusionDespite the multifaceted nature of the intervention and the complexity of implementation across a hospital, the system demonstrated clinical utility and acceptability across two key groups of stakeholders: parents and health professionals
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