312 research outputs found

    A Pilot Study Exploring the Potential of Improv in Strengthening Youth–Adult Partnerships

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    This study qualitatively explored the potential of improv for strengthening youth–adult partnerships. Seven members of a youth-adult research collaborative participated in a 2-hour professionally facilitated improv workshop. Participants provided insights about their experiences through a follow-up qualitative interview questionnaire. Participants indicated that improv assisted in dismantling power differentials that often exist in youth–adult partnership contexts, also noting that improv helped them to express their true selves more readily, along with helping them to see new and more “human” sides to their team members. Participants were enthusiastic about accessing further improv opportunities, noting that improv should be embedded into other youth–adult partnership efforts, as such approaches were deemed particularly helpful in building relationships and trust. The further inclusion of improv activities in youthserving intervention and prevention efforts would benefit from additional exploration as ways by which youth–adult collaborations might be innovated and strengthened

    Characterising beach intertidal bar systems using multi-annual LiDAR data

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    This is the peer reviewed version of the following article: Miles, A., Ilic, S., Whyatt, D., & James, M. R. (2019). Characterising beach intertidal bar systems using multi‐annual LiDAR data. Earth Surface Processes and Landforms, which has been published in final form at https://doi.org/10.1002/esp.4594. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-ArchivingIntertidal bars are common in meso-macrotidal low-to-moderate energy coastal environments and an understanding of their morphodynamics is important from the perspective of both coastal scientists and managers. However, previous studies have typically been limited by considering bar systems two-dimensionally, or with very limited alongshore resolution. This paper presents the first multi-annual study of intertidal alongshore bars and troughs in a macro-tidal environment using airborne LiDAR data to extract three-dimensional bar morphology at high resolution. Bar and trough positions are mapped along a 17.5 km stretch of coastline in the northwest of England on the eastern Irish Sea, using eight complete, and one partial, LiDAR surveys spanning 17 years. Typically, 3 – 4 bars are present, with significant obliquity identified in their orientation. This orientation mirrors the alignment of waves from the dominant south-westerly direction of wave approach, undergoing refraction as they approach the shoreline. Bars also become narrower and steeper as they migrate onshore, in a pattern reminiscent of wave shoaling. This suggests that the configuration of the bars is being influenced by overlying wave activity. Net onshore migration is present for the entire coastline, though rates vary alongshore, and periods of offshore migration may occur locally, with greatest variability between northern and southern regions of the coastline. This work highlights the need to consider intertidal bar systems as three-dimensional, particularly on coastlines with complex configurations and bathymetry, as localised studies of bar migration can overlook three-dimensional behaviour. Furthermore, the wider potential of LiDAR data in enabling high-resolution morphodynamic studies is clear, both within the coastal domain and beyond

    The social value of a QALY : raising the bar or barring the raise?

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    Background: Since the inception of the National Institute for Health and Clinical Excellence (NICE) in England, there have been questions about the empirical basis for the cost-per-QALY threshold used by NICE and whether QALYs gained by different beneficiaries of health care should be weighted equally. The Social Value of a QALY (SVQ) project, reported in this paper, was commissioned to address these two questions. The results of SVQ were released during a time of considerable debate about the NICE threshold, and authors with differing perspectives have drawn on the SVQ results to support their cases. As these discussions continue, and given the selective use of results by those involved, it is important, therefore, not only to present a summary overview of SVQ, but also for those who conducted the research to contribute to the debate as to its implications for NICE. Discussion: The issue of the threshold was addressed in two ways: first, by combining, via a set of models, the current UK Value of a Prevented Fatality (used in transport policy) with data on fatality age, life expectancy and age-related quality of life; and, second, via a survey designed to test the feasibility of combining respondents’ answers to willingness to pay and health state utility questions to arrive at values of a QALY. Modelling resulted in values of £10,000-£70,000 per QALY. Via survey research, most methods of aggregating the data resulted in values of a QALY of £18,000-£40,000, although others resulted in implausibly high values. An additional survey, addressing the issue of weighting QALYs, used two methods, one indicating that QALYs should not be weighted and the other that greater weight could be given to QALYs gained by some groups. Summary: Although we conducted only a feasibility study and a modelling exercise, neither present compelling evidence for moving the NICE threshold up or down. Some preliminary evidence would indicate it could be moved up for some types of QALY and down for others. While many members of the public appear to be open to the possibility of using somewhat different QALY weights for different groups of beneficiaries, we do not yet have any secure evidence base for introducing such a system

    Search for new phenomena in final states with an energetic jet and large missing transverse momentum in pp collisions at √ s = 8 TeV with the ATLAS detector

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    Results of a search for new phenomena in final states with an energetic jet and large missing transverse momentum are reported. The search uses 20.3 fb−1 of √ s = 8 TeV data collected in 2012 with the ATLAS detector at the LHC. Events are required to have at least one jet with pT > 120 GeV and no leptons. Nine signal regions are considered with increasing missing transverse momentum requirements between Emiss T > 150 GeV and Emiss T > 700 GeV. Good agreement is observed between the number of events in data and Standard Model expectations. The results are translated into exclusion limits on models with either large extra spatial dimensions, pair production of weakly interacting dark matter candidates, or production of very light gravitinos in a gauge-mediated supersymmetric model. In addition, limits on the production of an invisibly decaying Higgs-like boson leading to similar topologies in the final state are presente

    Assessment of Renal Function by the Stable Oxygen and Hydrogen Isotopes in Human Blood Plasma

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    Water (H2O) is the most abundant and important molecule of life. Natural water contains small amount of heavy isotopes. Previously, few animal model studies have shown that the isotopic composition of body water could play important roles in physiology and pathophysiology. Here we study the stable isotopic ratios of hydrogen (ή2H) and oxygen (ή18O) in human blood plasma. The stable isotopic ratio is defined and determined by ήsample = [(Rsample/RSTD)−1] * 1000, where R is the molar ratio of rare to abundant, for example, 18O/16O. We observe that the ή2H and the ή18O in human blood plasma are associated with the human renal functions. The water isotope ratios of the ή2H and ή18O in human blood plasma of the control subjects are comparable to those of the diabetes subjects (with healthy kidney), but are statistically higher than those of the end stage renal disease subjects (p<0.001 for both ANOVA and Student's t-test). In addition, our data indicate the existence of the biological homeostasis of water isotopes in all subjects, except the end stage renal disease subjects under the haemodialysis treatment. Furthermore, the unexpected water contents (ή2H and ή18O) in blood plasma of body water may shed light on a novel assessment of renal functions

    Scaling of species distribution models across spatial resolutions and extents along a biogeographic gradient. The case of the Iberian mole Talpa occidentalis

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    P. 279-292Scaling is a key process in modelling approaches since it allows for translating information from one scale to another. However, the success of this procedure may depend on ‘source’ and ‘target’ scales, but also on the biogeographic/ecological context of the study area. We aimed to quantify the performance and success of scaling species distribution model (SDM) predictions across spatial resolution and extent along a biogeographic gradient using the Iberian mole as study case. We ran separate MaxEnt models at two extents (national and regional) using independent datasets (species locations and environmental predictors) collected at 10 km and 50 m resolutions respectively. Model performance and success of scaling SDMs were quantified on the basis of accuracy measures and spatial predictions. Complementarily, we calculated marginality and tolerance as indicators of habitat availability and niche truncation along the biogeographic gradient. Model performance increased with resolution and extent, as well as from north to south (mainly for high resolution models). When regional models were validated at different scales, their performance reduced severely, particularly in the case of coarse resolution models (some of them performed worse than random). However, when the 10 km‐national model was downscaled within regions, it performed better (AUCtest: 0.82, 0.85 and 0.55 respectively for Galicia, Madrid and Granada) than models specifically calibrated within each region at 10 km (0.47, 0.65, 0.44). Indeed, it also had a better accuracy when projected at 50 m (0.77, 0.91, 0.79) than models fitted at that resolution (0.62, 0.83, 0.96) in two of the three cases. The success of scaling model predictions decreased along the biogeographic gradient, being these differences associated to niche truncation. Models representing non‐truncated niches were more successfully scaled across resolutions and extents (particularly in areas not offering all possible habitats for species), which has important implications for SDM applications.S

    A Critical Role for Muscle Ring Finger-1 in Acute Lung Injury–associated Skeletal Muscle Wasting

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    Rationale: Acute lung injury (ALI) is a debilitating condition associated with severe skeletal muscle weakness that persists in humans long after lung injury has resolved. The molecular mechanisms underlying this condition are unknown

    TP63 and TP73 in cancer, an unresolved “family” puzzle of complexity, redundancy and hierarchy

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    AbstractTP53 belongs to a small gene family that includes, in mammals, two additional paralogs, TP63 and TP73. The p63 and p73 proteins are structurally and functionally similar to p53 and their activity as transcription factors is regulated by a wide repertoire of shared and unique post-translational modifications and interactions with regulatory cofactors. p63 and p73 have important functions in embryonic development and differentiation but are also involved in tumor suppression. The biology of p63 and p73 is complex since both TP63 and TP73 genes are transcribed into a variety of different isoforms that give rise to proteins with antagonistic properties, the TA-isoforms that act as tumor-suppressors and DN-isoforms that behave as proto-oncogenes. The p53 family as a whole behaves as a signaling “network” that integrates developmental, metabolic and stress signals to control cell metabolism, differentiation, longevity, proliferation and death. Despite the progress of our knowledge, the unresolved puzzle of complexity, redundancy and hierarchy in the p53 family continues to represent a formidable challenge

    On the Origin and Spread of the Scab Disease of Apple: Out of Central Asia

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    Background Venturia inaequalis is an ascomycete fungus responsible for apple scab, a disease that has invaded almost all apple growing regions worldwide, with the corresponding adverse effects on apple production. Monitoring and predicting the effectiveness of intervention strategies require knowledge of the origin, introduction pathways, and population biology of pathogen populations. Analysis of the variation of genetic markers using the inferential framework of population genetics offers the potential to retrieve this information. Methodology/Principal Findings Here, we present a population genetic analysis of microsatellite variation in 1,273 strains of V. inaequalis representing 28 orchard samples from seven regions in five continents. Analysis of molecular variance revealed that most of the variation (88%) was distributed within localities, which is consistent with extensive historical migrations of the fungus among and within regions. Despite this shallow population structure, clustering analyses partitioned the data set into separate groups corresponding roughly to geography, indicating that each region hosts a distinct population of the fungus. Comparison of the levels of variability among populations, along with coalescent analyses of migration models and estimates of genetic distances, was consistent with a scenario in which the fungus emerged in Central Asia, where apple was domesticated, before its introduction into Europe and, more recently, into other continents with the expansion of apple growing. Across the novel range, levels of variability pointed to multiple introductions and all populations displayed signatures of significant post-introduction increases in population size. Most populations exhibited high genotypic diversity and random association of alleles across loci, indicating recombination both in native and introduced areas. Conclusions/Significance Venturia inaequalis is a model of invasive phytopathogenic fungus that has now reached the ultimate stage of the invasion process with a broad geographic distribution and well-established populations displaying high genetic variability, regular sexual reproduction, and demographic expansion.Contexte Venturia inaequalis est un champignon ascomycete responsable de la tavelure du pommier, une maladie qui a envahi presque toutes les rĂ©gions du monde oĂč le pommier est cultivĂ© posant ainsi de graves problĂšmes en production. PrĂ©venir et enrayer efficacement la rĂ©ussite d’un tel succĂšs invasif nĂ©cessite des connaissances approfondies sur l’origine, les voies d’introduction, la biologie et la gĂ©nĂ©tique de ces populations invasives. En utilisant le potentiel d’infĂ©rence de la gĂ©nĂ©tique des populations, l’analyse de la variation de marqueurs gĂ©nĂ©tiques offre la possibilitĂ© d’accĂ©der Ă  ces informations. MĂ©thodologie et Principaux rĂ©sultats Ici nous prĂ©sentons l’analyse de donnĂ©es microsatellites obtenues pour 1273 souches de V. inaequalis provenant de 28 vergers prĂ©levĂ©es dans 7 rĂ©gions sur les 5 continents. L’analyse de la variance molĂ©culaire rĂ©vĂšle que 88% de la variation se retrouve dans les vergers Ă©chantillonnĂ©s, ce qui est compatible avec d’importantes migrations historiques du champignon entre et Ă  l’intĂ©rieur mĂȘme des rĂ©gions. MalgrĂ© cette trĂšs faible structuration des populations, les diffĂ©rentes analyses de clustering mettent en Ă©vidence un partage des populations en groupes sĂ©parĂ©s correspondant Ă  leur origine gĂ©ographique, montrant ainsi que chaque rĂ©gion hĂ©berge une population distincte du champignon. Ensemble, les rĂ©sultats obtenus sur la comparaison du niveau de variabilitĂ© entre populations, les analyses de coalescence et les modĂšles de migration testĂ©s plaident en faveur d’un scĂ©nario dans lequel le champignon aurait Ă©mergĂ© d’Asie Centrale, oĂč le pommier a Ă©tĂ© domestiquĂ©, avant d’ĂȘtre introduit en Europe puis plus rĂ©cemment dans les autres continents suite Ă  l’expansion de la culture du pommier. Les niveaux de variabilitĂ© indiquent que ces territoires ont subi des introductions multiples et que les populations portent toutes des signatures rĂ©vĂ©lant de fortes expansions dĂ©mographiques aprĂšs leur introduction. Enfin, la forte diversitĂ© gĂ©notypique des populations et l’association alĂ©atoire des allĂšles entre loci suggĂšrent que le champignon prĂ©sente une reproduction sexuĂ©e rĂ©guliĂšre Ă  la fois dans les rĂ©gions oĂč il a Ă©tĂ© introduit et dans sa rĂ©gion native. Conclusion et PortĂ©e. Venturia inaequalis est un modĂšle de champignons phytopathogĂšne invasif qui a maintenant atteint le stade ultime du processus invasif, c’est Ă  dire une trĂšs large distribution gĂ©ographique par des populations bien Ă©tablies montrant une grande diversitĂ© gĂ©nĂ©tique, une reproduction sexuĂ©e rĂ©guliĂšre et une histoire d’expansion dĂ©mographique
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