50 research outputs found

    U-Pb zircon ages of the Wildhorse gneiss, Pioneer Mountains, south-central Idaho, and tectonic implications

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    The gneiss complex of Wildhorse Creek (Wildhorse gneiss) forms the central component of the lowest structural plate in the Pioneer metamorphic core complex of south-central Idaho. The oldest rock in the complex is a felsic ortho-gneiss, with Neoarchean U-Pb magmatic zircon ages of 2.60-2.67 Ga. The ortho-gneiss overlaps in age and is interpreted to be part of the Grouse Creek block of the Albion Mountains to the south. This Archean metagranitoid is structurally interleaved with paragneiss containing quartzite and calc-silicate rock. Structurally below the orthogneiss, some quartzites have multiple concordant populations of detrital-zircon grains as young as ca. 1700 Ma, while others have no zircon grains younger than ca. 2500 Ma. Structurally above the Archean gneiss is a heterogeneous paragneiss that contains calc-silicate and quartzitic rocks with detrital zircons as young as ca. 1460 Ma. Amphibolite in this unit contains zircons dated at ca. 1850 Ma, indicating that this rock can be no older than that and implying considerable structural complexity. The upper part of the Wildhorse gneiss contains metaquartzites bearing zircons as young as ca. 1400 Ma. The protolith of this paragneiss is interpreted as the southernmost exposures of the Lemhi subbasin of the Mesoproterozoic Belt Supergroup. The upper Wildhorse gneiss includes ca. 695 Ma intrusive orthogneiss that is coeval with Neoproterozoic rift-related volcanic or intrusive rocks near Pocatello, House Mountain, and Edwardsburg, Idaho. This Cryogenian meta-intrusive rock is the likely source of the 650-710 Ma detrital-zircon population in the Big Lost River that drains the core complex. Initial eHf values from 675 Ma zircons are between 3.4 and -2.4, suggesting the granitoids had a mixed source in both continental crust and juvenile mantle.This research was supported by National Science Foundation grants EAR 05-10980 and 08-38425 and U.S. Geological Survey grant G14AC00136. Logistical support was provided by the Idaho State University Geology field camp at Lost River Field Station

    Resilience at work

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    Abstract An ecological conceptualisation of resilience was one of the major orientating concepts for this doctoral research which used critical realist methodology to gain explanatory insight into the job retention challenges faced by employees recovering from mental health problems. Methods involved a literature review of qualitative job retention research, a comparative case study approach, and service user collaboration. One case study comprised seven employed people who were using acute mental health services. The second comparative case study comprised fourteen users of a community-based job retention project. Work mattered to people during recovery because of feelings of guilt about not working, and because some feared that work had, or could, exacerbate their mental health problems. Such fears co-existed with a strong sense that work was an important part of people's lives in terms of finance, social capital, occupational capital and personal capital. These assets were under threat, but they also had the potential to be deployed to support a resilient recovery. Participants were on complex and uncertain return-to-work journeys, facing a combination of internal and external obstacles. Barriers arose from the direct impacts of mental health problems, external and internalised stigma, job demands and the workplace environment -particularly relationships with colleagues and, above all, managers. Findings suggest that return-to-work trajectories are likely to be more successful and sustainable when such challenges are addressed. Broader implications were that occupational and ecological resilience perspectives can be integrated to help understand the challenges people with mental health problems encounter when seeking to retain employment

    Bounce Forward:A School-Based Prevention Programme for Building Resilience in a Socioeconomically Disadvantaged Context

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    Socioeconomic status is a strong predictor of normative development and well-being in young people. It is well-known that growing up in a socioeconomically disadvantaged context may lead to negative outcomes, both in childhood and in adulthood. Early intervention and prevention programmes are crucial for building resilience and improving health, well-being and equity. Bounce Forward is a school-based prevention programme implemented in Blackpool, a town in the United Kingdom facing multiple challenges. It was part of a whole town resilience approach and nascent global social movement known as the "Resilience Revolution." Between 2017 and 2019, the programme was delivered in all Year 5 classes at every primary school in Blackpool (n school = 36), reaching out to 3,134 students (ages 9-10; 50.4% male). The programme aimed to increase resilience in young people by building knowledge and skills about mental health and resilience through 10 sessions. In the current study, we longitudinally examined a range of protective factors, which are relevant to young people's resilience, as well as their mental health outcomes at three time points: before they participated in Bounce Forward, at the end of the programme, and 3-5 months later, when they started Year 6. The current sample included 441 Year 5 students (54.2% male) from 11 primary schools in Blackpool. Nineteen teaching staff also participated in the study and provided qualitative data regarding the impact of the programme on their students. Results showed improvement in some areas of young people's resilience after taking part in Bounce Forward. We also identified gender differences in several protective factors, indicating that boys may need further support. Teaching staff highlighted improvements in various areas; and also observed that their students have been using the strategies that they learnt from the programme. Altogether, findings suggested that young people benefitted from Bounce Forward. The programme is sustainable, offering a free to download teacher resource pack that allows schools to self-deliver it

    A social pedagogical intervention to support children in care:Back on Track

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    This paper focuses on an intervention project, Back on Track (BoT), implemented as a part of the Resilience Revolution: HeadStart Blackpool (RR:HS) programme in the UK. Whilst it is a famous family holiday resort, Blackpool is also one of the most deprived towns in England. This makes life challenging for young people (YP) to maintain wellbeing and reach their potential. Blackpool also has an above average and growing proportion of children in care. They are at a higher risk of developing mental health difficulties and of being permanently excluded from school. BoT aimed to support fostered children who have been referred by schools or social workers to the project for having emotional and behavioural struggles. As a consequence of their difficulties, they were at risk of permanent exclusion from the school. The intervention was grounded in a social pedagogical approach and Resilient Therapy. Resilience Coaches (i.e., wellbeing practitioners) had the role of enhancing communication between YP, family, social care, and school, whilst working with YP to co-produce coping strategies. Between November 2016 and June 2021, 39 YP (61.5% male) aged 10 to 15 (M = 12.74, SD = 1.60) received BoT support over a period lasting between 4 months to 2.5 years (M = 14 months, SD = 6.8 months). Using a mixed-methods design, this paper explored the BoT implementation. YP completed questionnaires before and after BoT. Triangulation interviews were conducted with a randomly selected YP, foster parent and the Resilience Coach. Results showed the benefit of equipping YP with ā€˜resilient movesā€™ and joining up systems to work together and better support YP and families. YP reported reduced difficulties, improved strengths (i.e., prosocial behaviour) and educational outcomes. This helped build resilience and reduce the risk of permanent exclusions from school. Policy and practice implications for children in care are discussed

    The contribution of a complex systems-based approach to progressive social resilience

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    The use of resilience in social practice has evolved from a theoretical framework at the intersection between individuals and their social ecology. Critics argue this theory still results in policies and practices that are too individualised, with the potential for negative social consequences. This paper further critiques contemporary understanding of resilience theory and its application. It juxtaposes complex systems theory with a social inequalities oriented resilience practice. This provides a paradoxical approach. It is acknowledged that state and public policy decisions and actions can be anti-resilient, undermining community and social resilience that already exists in the form of social relationships, self-organisation and co-production. Nevertheless, collective social resilience also illustrates the potential of local and service user organisations to contribute to an overall transformational change process

    The ALLEGRO trial : a placebo controlled randomised trial of intravenous lidocaine in accelerating gastrointestinal recovery after colorectal surgery

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    Acknowledgements The authors wish to acknowledge the following persons who have helped deliver the ALLEGRO trial: the programming team based in the Centre for Healthcare Randomised Trials, for their work in developing the study web portal; Sharon Wren and Zoe Batham for their administrative support; ACCORD in Edinburgh; the Perioperative Medicine Clinical Trials Network (POMCTN) for adopting the trial for promotion; and the local recruiting teams and participants. We are also indebted to the late Professor Kenneth Fearon, University of Edinburgh, for protocol development and study design. The views and opinions expressed herein are those of the authors and do not necessarily reflect those of the Health Technology Assessment Programme, National Institute for Health Research (NIHR), NHS or the Department of Health. Funding The trial is funded by the NIHR Health and Technology Assessment programme, project number 15/130/95. The funding body had no role in the design of the study, collection of data or the writing of this paper, nor will the funding body have a role in analysis, interpretation of data or in writing future manuscripts. The co-sponsors are University of Edinburgh & Lothian Health Board (AC- CORD), The Queenā€™s Medical Research Institute, 47 Little France Crescent, Ed- inburgh EH16 4TJ.Peer reviewedPublisher PD

    The Chandra Multi-Wavelength Project: Optical Spectroscopy and the Broadband Spectral Energy Distributions of X-ray Selected AGN

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    From optical spectroscopy of X-ray sources observed as part of ChaMP, we present redshifts and classifications for a total of 1569 Chandra sources from our targeted spectroscopic follow up using the FLWO, SAAO, WIYN, CTIO, KPNO, Magellan, MMT and Gemini telescopes, and from archival SDSS spectroscopy. We classify the optical counterparts as 50% BLAGN, 16% NELG, 14% ALG, and 20% stars. We detect QSOs out to z~5.5 and galaxies out to z~3. We have compiled extensive photometry from X-ray to radio bands. Together with our spectroscopic information, this enables us to derive detailed SEDs for our extragalactic sources. We fit a variety of templates to determine bolometric luminosities, and to constrain AGN and starburst components where both are present. While ~58% of X-ray Seyferts require a starburst event to fit observed photometry only 26% of the X-ray QSO population appear to have some kind of star formation contribution. This is significantly lower than for the Seyferts, especially if we take into account torus contamination at z>1 where the majority of our X-ray QSOs lie. In addition, we observe a rapid drop of the percentage of starburst contribution as X-ray luminosity increases. This is consistent with the quenching of star formation by powerful QSOs, as predicted by the merger model, or with a time lag between the peak of star formation and QSO activity. We have tested the hypothesis that there should be a strong connection between X-ray obscuration and star-formation but we do not find any association between X-ray column density and star formation rate both in the general population or the star-forming X-ray Seyferts. Our large compilation also allows us to report here the identification of 81 XBONG, 78 z>3 X-ray sources and 8 Type-2 QSO candidates. Also we have identified the highest redshift (z=5.4135) X-ray selected QSO with optical spectroscopy.Comment: 17 pages, 16 figures, accepted for publication in ApJS. Full data table and README file can be found online at http://hea-www.harvard.edu/~pgreen/Papers.htm

    Active Tuberculosis among Homeless Persons, Toronto, Ontario, Canada, 1998ā€“2007

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    While tuberculosis (TB) in Canadian cities is increasingly affecting foreign-born persons, homeless persons remain at high risk. To assess trends in TB, we studied all homeless persons in Toronto who had a diagnosis of active TB during 1998ā€“2007. We compared Canada-born and foreign-born homeless persons and assessed changes over time. We identified 91 homeless persons with active TB; they typically had highly contagious, advanced disease, and 19% died within 12 months of diagnosis. The proportion of homeless persons who were foreign-born increased from 24% in 1998ā€“2002 to 39% in 2003ā€“2007. Among foreign-born homeless persons with TB, 56% of infections were caused by strains not known to circulate among homeless persons in Toronto. Only 2% of infections were resistant to first-line TB medications. The rise in foreign-born homeless persons with TB strains likely acquired overseas suggests that the risk for drug-resistant strains entering the homeless shelter system may be escalating

    Crop Updates 2005 - Farming Systems

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    This session covers forty four papers from different authors: PLENARY 1. 2005 Outlook, David Stephens and Nicola Telcik, Department of Agriculture FERTILITY AND NUTRITION 2. The effect of higher nitrogen fertiliser prices on rotation and fertiliser strategies in cropping systems, Ross Kingwell, Department of Agriculture and University of Western Australia 3. Stubble management: The short and long term implications for crop nutrition and soil fertility, Wayne Pluske, Nutrient Management Systems and Bill Bowden, Department of Agriculture 4. Stubble management: The pros and cons of different methods, Bill Bowden, Department of Agriculture, Western Australia and Mike Collins, WANTFA 5. Effect of stubble burning and seasonality on microbial processes and nutrient recycling, Frances Hoyle, The University of Western Australia 6. Soil biology and crop production in Western Australian farming systems, D.V. Murphy, N. Milton, M. Osman, F.C. Hoyle, L.K Abbott, W.R. Cookson and S. Darmawanto, The University of Western Australia 7. Urea is as effective as CAN when no rain for 10 days, Bill Crabtree, Crabtree Agricultural Consulting 8. Fertiliser (N,P,S,K) and lime requirements for wheat production in the Merredin district, Geoff Anderson, Department of Agriculture and Darren Kidson, Summit Fertilizers 9. Trace element applications: Up-front verses foliar? Bill Bowden and Ross Brennan, Department of Agriculture 10. FertcareĀ®, Environmental Product Stewardship and Advisor Standards for thee Fertiliser Industry, Nick Drew, Fertilizer Industry Federation of Australia (FIFA) SOIL AND LAND MANAGEMENT 11. Species response to row spacing, density and nutrition, Bill Bowden, Craig Scanlan, Lisa Sherriff, Bob French and Reg Lunt, Department of Agriculture 12. Investigation into the influence of row orientation in lupin crops, Jeff Russell, Department of Agriculture and Angie Roe, Farm Focus Consultants 13. Deriving variable rate management zones for crops, Ian Maling, Silverfox Solutions and Matthew Adams, DLI 14. In a world of Precision Agriculture, weigh trailers are not passĆ©, Jeff Russell, Department of Agriculture 15. Cover crop management to combat ryegrass resistance and improve yields, Jeff Russell, Department of Agriculture and Angie Roe, Farm Focus Consultants 16. ARGT home page, the place to find information on annual ryegrass toxicity on the web, Dr George Yan, BART Pty Ltd 17. Shallow leading tine (SLT) ripper significantly reduces draft force, improves soil tilth and allows even distribution of subsoil ameliorants, Mohammad Hamza, Glen Riethmuller and Wal Anderson, Department of Agriculture PASTURE ANS SUMMER CROP SYSTEMS 18. New annual pasture legumes for Mediteranean farming systems, Angelo Loi, Phil Nichols, Clinton Revell and David Ferris, Department of Agriculture 19. How sustainable are phase rotations with Lucerne? Phil Ward, CSIRO Plant Industry 20. Management practicalities of summer cropping, Andrea Hills and Sally-Anne Penny, Department of Agriculture 21. Rainfall zone determines the effect of summer crops on winter yields, Andrea Hills, Sally-Anne Penny and David Hall, Department of Agriculture 22. Summer crops and water use, Andrea Hills, Sally-Anne Penny and David Hall, Department of Agriculture, and Michael Robertson and Don Gaydon, CSIRO Brisbane 23. Risk analysis of sorgum cropping, Andrea Hills and Sally-Anne Penny, Department of Agriculture, and Dr Michael Robertson and Don Gaydon, CSIRO Brisbane FARMER DECISION SUPPORT AND ADOPTION 24. Variety release and End Point Royalties ā€“ a new system? Tress Walmsley, Department of Agriculture 25. Farming system analaysis using the STEP Tool, Caroline Peek and Megan Abrahams, Department of Agriculture 26. The Leakage Calculator: A simple tool for groundwater recharge assessment, Paul Raper, Department of Agriculture 27. The cost of Salinity Calculator ā€“ your tool to assessing the profitability of salinity management options, Richard Oā€™Donnell and Trevor Lacey, Department of Agriculture 28. Climate decision support tools, Meredith Fairbanks and David Tennant, Department of Agriculture 29. Horses for courses ā€“ using the best tools to manage climate risk, Cameron Weeks, Mingenew-Irwin Group/Planfarm and Richard Quinlan, Planfarm Agronomy 30. Use of seasonal outlook for making N decisions in Merredin, Meredith Fairbanks and Alexandra Edward, Department of Agriculture 31. Forecasts and profits, Benefits or bulldust? Chris Carter and Doug Hamilton, Department of Agriculture 32. A tool to estimate fixed and variable header and tractor depreciation costs, Peter Tozer, Department of Agriculture 33. Partners in grain: ā€˜Putting new faces in new placesā€™, Renaye Horne, Department of Agriculture 34. Results from the Grower group Alliance, Tracey Gianatti, Grower Group Alliance 35. Local Farmer Group Network ā€“ farming systems research opportunities through local groups, Paul Carmody, Local Farmer Group Network GREENHOUSE GAS AND CLIMATE CHANGE 36. Changing rainfall patterns in the grainbelt, Ian Foster, Department of Agriculture 37. Vulnerability of broadscale agriculture to the impacts of climate change, Michele John, CSIRO (formerly Department of Agriculture) and Ross George, Department of Agriculture 38. Impacts of climate change on wheat yield at Merredin, Imma FarrĆ© and Ian Foster, Department of Agriculture 39. Climate change, land use suitability and water security, Ian Kininmonth, Dennis van Gool and Neil Coles, Department of Agriculture 40. Nitrous oxide emissions from cropping systems, Bill Porter, Department of Agriculture, Louise Barton, University of Western Australia 41. The potential of greenhouse sinks to underwrite improved land management in Western Australia, Richard Harper and Peter Ritson, CRC for Greenhouse Accounting and Forest Products Commission, Tony Beck, Tony Beck Consulting Services, Chris Mitchell and Michael Hill, CRC for Greenhouse Accounting 42. Removing uncertainty from greenhouse emissions, Fiona Barker-Reid, Will Gates, Ken Wilson and Rob Baigent, Department of Primary Industries - Victoria and CRC for Greenhouse Accounting (CRCGA), and Ian Galbally, Mick Meyer and Ian Weeks, CSIRO Atmospheric Research and CRCGA 43. Greenhouse in Agriculture Program (GIA), Traci Griffin, CRC for Greenhouse Accounting 44. Grains Greenhouse Accounting framework, D. Rodriguez, M. Probust, M. Meyers, D. Chen, A. Bennett, W. Strong, R. Nussey, I. Galbally and M. Howden CONTACT DETAILS FOR PRINCIPAL AUTHOR
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