53,584 research outputs found

    Methylmercury dietary pathways and bioaccumulation in Arctic benthic invertebrates of the Beaufort Sea

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    This study investigated methylmercury (MeHg) concentrations in Arctic benthic invertebrates from two shelf sites in the Canadian Beaufort Sea. Carbon, nitrogen, and sulfur stable isotopes and fatty acids were measured to examine diet influences on MeHg concentrations in 476 individuals from 53 taxa of benthic invertebrates representing three different feeding guilds. Taxonomic identifications were based on DNA-barcoding and traditional taxonomy. MeHg concentrations ranged from 3 to 421 ng/g dry weight and increased over three trophic levels (δ15N range = 4.4–14.2‰). Organic matter sources had small but significant influences on MeHg bioaccumulation in the benthic food web. Carbon stable isotope ratios (δ13C, range = −25.5 to −19.8‰) were positively correlated with MeHg concentrations, suggesting greater reliance on benthic carbon contributed to higher concentrations. Sulfur stable isotopes were unrelated to MeHg concentrations. Fatty acids suggested feeding on diatoms versus dinoflagellates, and reliance on benthic resources influenced MeHg concentrations. Higher MeHg concentrations were observed at the site closer to the Mackenzie River mouth than the Cape Bathurst site. This study generated the most taxonomically rich dataset of MeHg concentrations in invertebrates from the Arctic marine benthos to date and provides a basis for future research on food web MeHg dynamics in the Canadian Beaufort Sea

    Comparing mental health and mental capacity law data across borders: challenges and opportunities

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    The island of Ireland is partitioned into Northern Ireland and the Republic of Ireland. In both jurisdictions, there have been important developments in mental health and mental capacity law, and associated policies and services. This includes an emphasis on developing more comprehensive approaches to collecting data on outcomes and so there is an opportunity to align these processes to enable comparison and shared learning across the border. This article explores: legal and policy developments; international approaches to mental health outcomes; and the type of data that would be helpful to collect to better understand the use of mental health and mental capacity laws. It is argued that an inclusive strategy to developing a comprehensive, integrated and aligned approach to collecting and analysing data would benefit citizens, policy makers and professionals.<br/

    Efficient (~10%) Generation of Vacuum Ultraviolet Femtosecond Pulses via Four-Wave Mixing in Hollow-Core Fibers (supplementary data and simulations)

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    Experimental data and simulations to accompany the manuscript Efficient (~10%) Generation of Vacuum Ultraviolet Femtosecond Pulses via Four-Wave Mixing in Hollow-Core FibersContents HCF simulations using Luna.jl (https://github.com/LupoLab/Luna.jl)Demo simulation Jupyter notebooks (IPYNB format only).Results summaries in Jupyter notebook (HTML and IPYNB formats).Full (E,P) scan datasets (tar archives).Experimental dataExperimental temporal characterisation (cross-correlation) data and processing.(See readme.txt for further details.)</p

    Maps of the Geshiyaro study region within the Wolaita zone.

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    (a) village level MDA coverage in pre-School Aged Children (Pre-SAC) populations; (b) standard error of MDA coverage; (c) villages that were above or below WHO’s target threshold for MDA coverage (75%); (d) the aggregated MDA coverage at the district level. Abbreviations: Pre-SAC–pre-school-aged children. Shapefile data from GADM (https://gadm.org/download_country.html).</p

    Maps of the Geshiyaro study region within the Wolaita zone.

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    (a) village level MDA coverage in adult populations; (b) standard error of MDA coverage; (c) villages that were above or below WHO’s target threshold for MDA coverage; (d) the aggregated MDA coverage at the district level. Shapefile data from GADM (https://gadm.org/download_country.html).</p

    sj-tiff-1-jet-10.1177_15266028241229005 – Supplemental material for Thoracoabdominal Aortic Aneurysm Repair Using Fenestrated and Branched Endovascular Grafts for High-Risk Patients: Evolving yet Safe

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    Supplemental material, sj-tiff-1-jet-10.1177_15266028241229005 for Thoracoabdominal Aortic Aneurysm Repair Using Fenestrated and Branched Endovascular Grafts for High-Risk Patients: Evolving yet Safe by Daniyal N. Mahmood, Rodolfo Rocha, Maral Ouzounian, Kong Teng Tan, Samantha M. Forbes, Jennifer C-Y. Chung and Thomas F. Lindsay in Journal of Endovascular Therapy</p

    “Conjuring Nineteenth-Century Black Environmentalism.”

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    Randomised controlled feasibility study protocol of the Carers-ID online intervention to support the mental health of family carers of people with intellectual disabilities.

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    BackgroundFamily carers play a crucial role in supporting the health and well-being of people with intellectual disabilities. Given their role and responsibilities many family carers experience significant and ongoing stress and mental health difficulties. Programmes and interventions which provide training and support to family carers have been shown to have a positive impact on levels of stress and quality of life. However, these are often face to face which can create barriers to full participation. Online interventions have been shown to offer flexibility in delivery compared with traditional face to face approaches. The primary objective of this study is to determine the feasibility of delivering the Carers-ID online intervention, while the secondary outcome is improved mental health in family carers of people with intellectual disabilities.MethodsFamily carers (n = 120) will be randomised to receive the intervention (n=60) orassigned to a wait-list control (n=60) group. The intervention (www.Carers-ID.com) consists of fourteen modules which cover topics including: promoting resilience, providing peer support, reducing anxiety, managing stress, accessing local supports, managing family conflict and information for siblings who are carers. The intervention has been co-produced with voluntary sector organisations and family carers and tested for acceptability. Primary outcomes for this study include acceptability and feasibility of the outcome measures, recruitment, participation and retention rates and effect sizes.Secondary outcomes will be completed at three time points (baseline, followingintervention completion and three months after completion). These include, TheDepression, Anxiety and Stress Scale, The Warwick–Edinburgh Mental Well-beingScale, The Resilience Scale and The Social Connectedness Scale Revised.Participants (n=12) who have taken part in the intervention arm of the research will be invited to participate in semi-structured interviews as part of the process evaluation.DiscussionThe Carers-ID intervention provides an online resource for family carers to support their mental health and wellbeing and promote their resilience. It represents an affordable and accessible means of delivering such support. Testing the feasibility of the intervention and related trial procedures is required to determine whether a fullscale randomised controlled trial to evaluate the intervention’s effectiveness is warranted.<br/
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