442 research outputs found

    Environmental Justice = Social Justice: Southern Organizing Heralds New Movement

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    [Excerpt] In December 1992, more than 2500 people from the cities, small towns, and countryside of 14 Southern states gathered in New Orleans for a Southern Community-Labor Conference for Environmental Justice. In one sense, the conference was part of a new environmental movement, for that\u27s the issue that fired it. But in another sense, this is a new social justice movement, for it has redefined the term environmentalism to include all of the life conditions of a community

    Anne Braden Interview

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    Transcript of an oral history interview with Anne Braden by Yvonne Baldwin and John Ernst on her experiences during the Vietnam War on August 20, 1999

    Breaking the silence: Insights into the lived experiences of WA Aboriginal/LGBTIQ+ people: Community summary report 2021

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    The ‘Breaking the Silence’ research project is one of the first to focus on the unique experiences of Aboriginal and/or Torres Strait Islander LGBTIQ+ people living in Western Australia. Research focusing on the intersection of Indigeneity and gender/sexual diversity is severely lacking in Australia. This is the first survey to comprehensively capture the experiences of Aboriginal and Torres Strait Islander LGBTIQ+ Western Australians. Previously, major research pertaining to LGBTIQ+ Australians rarely just focused on Aboriginal and Torres Strait Islander same sex attracted or gender variant individuals (Bonson, 2017; Dudgeon, et. al., 2017; Growing Up Queer, 2014; Hill, et. al., 2021; Uink, et. al., 2020; Whitton, et. al, 2015). This summary report presents the key findings of a state-wide survey completed by Aboriginal and/or Torres Strait Islander people, living in Western Australia and identifying as LGBTIQ+. Findings about discrimination, homophobia and the ways in which participants are included and accepted within their own families and the wider community are presented. The report also provides a focus on the positive aspects of participants’ lives; including how they experience pride and inclusion and a sense of belonging to their Aboriginal and/or Torres Strait Islander and/or LGBTIQ+ communities. This summary report has important information for organisations that provide health and social support services to Aboriginal and Torres Strait Islander people who identify as LGBTIQ+, including the extent to which diverse health, social and emotional wellbeing; education and community services meet the needs of participants.This report also includes a section describing how the findings from the community compare and contrast with those of workers in a range of health, social support and education services from the first phase of the study. (See: “Breaking the Silence: Insights from WA Services Working with Aboriginal/ LGBTIQ+ People,”)

    Breaking the silence: Insights from WA services working with Aboriginal/ LGBTIQ+ people: Organisations summary report 2021

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    The ‘Breaking the Silence’ research project is one of the first to focus on the unique experiences of Aboriginal and/or Torres Strait Islander LGBTIQ+ people living in Western Australia. The report presents the first phase of a twopart research project that explores how a range of health, social support and education organisations respond to the needs of Aboriginal and/or Torres Strait Islander people, living in Western Australia and identifying as LGBTIQ+. This report presents the findings of focus groups, interviews and surveys with staff employed within a range of organisations that work closely with Aboriginal and/or LGBTIQ+ individuals. The discussion explores the extent to which diverse health, social and emotional wellbeing, education and community services meet the needs of participants, how staff working in these organisations are supported and what else is needed to provide effective and responsive services for Aboriginal and/or Torres Strait Islander clients who also identify as LGBTIQ+. Please see the ’Breaking the Silence: Insights into the Lived Experiences of WA Aboriginal/LGBTIQ+ People, Community Summary Report’ on findings from a survey distributed to Aboriginal and/or Torres Strait Islander LGBTIQ+ in the community of Western Australia

    Dietary Supplementation with Soluble Plantain Non-Starch Polysaccharides Inhibits Intestinal Invasion of Salmonella Typhimurium in the Chicken

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    Soluble fibres (non-starch polysaccharides, NSP) from edible plants but particularly plantain banana (Musa spp.), have been shown in vitro and ex vivo to prevent various enteric pathogens from adhering to, or translocating across, the human intestinal epithelium, a property that we have termed contrabiotic. Here we report that dietary plantain fibre prevents invasion of the chicken intestinal mucosa by Salmonella. In vivo experiments were performed with chicks fed from hatch on a pellet diet containing soluble plantain NSP (0 to 200 mg/d) and orally infected with S.Typhimurium 4/74 at 8 d of age. Birds were sacrificed 3, 6 and 10 d post-infection. Bacteria were enumerated from liver, spleen and caecal contents. In vitro studies were performed using chicken caecal crypts and porcine intestinal epithelial cells infected with Salmonella enterica serovars following pre-treatment separately with soluble plantain NSP and acidic or neutral polysaccharide fractions of plantain NSP, each compared with saline vehicle. Bacterial adherence and invasion were assessed by gentamicin protection assay. In vivo dietary supplementation with plantain NSP 50 mg/d reduced invasion by S.Typhimurium, as reflected by viable bacterial counts from splenic tissue, by 98.9% (95% CI, 98.1–99.7; P<0.0001). In vitro studies confirmed that plantain NSP (5–10 mg/ml) inhibited adhesion of S.Typhimurium 4/74 to a porcine epithelial cell-line (73% mean inhibition (95% CI, 64–81); P<0.001) and to primary chick caecal crypts (82% mean inhibition (95% CI, 75–90); P<0.001). Adherence inhibition was shown to be mediated via an effect on the epithelial cells and Ussing chamber experiments with ex-vivo human ileal mucosa showed that this effect was associated with increased short circuit current but no change in electrical resistance. The inhibitory activity of plantain NSP lay mainly within the acidic/pectic (homogalacturonan-rich) component. Supplementation of chick feed with plantain NSP was well tolerated and shows promise as a simple approach for reducing invasive salmonellosis

    Fine Ash-Bearing Particles as a Major Aerosol Component in Biomass Burning Smoke

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    Biomass burning (BB) events are occurring globally with increasing frequency, and their emissions are having more impacts on human health and climate. Large ash particles are recognized as a BB product with major influences on soil and water environments. However, fine-ash particles, which have diameters smaller than several microns and characteristic morphologies and compositions (mainly Ca and Mg carbonates), have not yet been explicitly considered as a major BB aerosol component either in field observations or climate models. This study measured BB aerosol samples using transmission electron microscopy (TEM) and ion chromatography during the Fire Influence on Regional to Global Environments and Air Quality (FIREX-AQ) campaign. We show that significant amounts of fine ash-bearing particles are transported \u3e100 km from their fire sources. Our environmental chamber experiments suggest that they can act as cloud condensation and ice nuclei. We also found considerable amounts of fine ash-bearing particles in the TEM samples collected during previous campaigns (Biomass Burning Observation Project and Megacity Initiative: Local and Global Research Observations). These ash particles are commonly mixed with organic matter and make up ∼8% and 5% of BB smoke by number and mass, respectively, in samples collected during the FIREX-AQ campaign. The measured ash-mass concentrations are approximately five times and six times greater than those of BB black carbon and potassium, respectively, scaling to an estimated global emission of 11.6 Tg yr−1 with a range of 8.8–16.3 Tg yr−1. Better characterization and constraints on these fine ash-bearing particles will improve BB aerosol measurements and strengthen assessments of BB impacts on human health and climate

    Machine learning algorithms performed no better than regression models for prognostication in traumatic brain injury

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    Objective: We aimed to explore the added value of common machine learning (ML) algorithms for prediction of outcome for moderate and severe traumatic brain injury. Study Design and Setting: We performed logistic regression (LR), lasso regression, and ridge regression with key baseline predictors in the IMPACT-II database (15 studies, n = 11,022). ML algorithms included support vector machines, random forests, gradient boosting machines, and artificial neural networks and were trained using the same predictors. To assess generalizability of predictions, we performed internal, internal-external, and external validation on the recent CENTER-TBI study (patients with Glasgow Coma Scale <13, n = 1,554). Both calibration (calibration slope/intercept) and discrimination (area under the curve) was quantified. Results: In the IMPACT-II database, 3,332/11,022 (30%) died and 5,233(48%) had unfavorable outcome (Glasgow Outcome Scale less than 4). In the CENTER-TBI study, 348/1,554(29%) died and 651(54%) had unfavorable outcome. Discrimination and calibration varied widely between the studies and less so between the studied algorithms. The mean area under the curve was 0.82 for mortality and 0.77 for unfavorable outcomes in the CENTER-TBI study. Conclusion: ML algorithms may not outperform traditional regression approaches in a low-dimensional setting for outcome prediction after moderate or severe traumatic brain injury. Similar to regression-based prediction models, ML algorithms should be rigorously validated to ensure applicability to new populations

    Variation in Structure and Process of Care in Traumatic Brain Injury: Provider Profiles of European Neurotrauma Centers Participating in the CENTER-TBI Study.

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    INTRODUCTION: The strength of evidence underpinning care and treatment recommendations in traumatic brain injury (TBI) is low. Comparative effectiveness research (CER) has been proposed as a framework to provide evidence for optimal care for TBI patients. The first step in CER is to map the existing variation. The aim of current study is to quantify variation in general structural and process characteristics among centers participating in the Collaborative European NeuroTrauma Effectiveness Research in Traumatic Brain Injury (CENTER-TBI) study. METHODS: We designed a set of 11 provider profiling questionnaires with 321 questions about various aspects of TBI care, chosen based on literature and expert opinion. After pilot testing, questionnaires were disseminated to 71 centers from 20 countries participating in the CENTER-TBI study. Reliability of questionnaires was estimated by calculating a concordance rate among 5% duplicate questions. RESULTS: All 71 centers completed the questionnaires. Median concordance rate among duplicate questions was 0.85. The majority of centers were academic hospitals (n = 65, 92%), designated as a level I trauma center (n = 48, 68%) and situated in an urban location (n = 70, 99%). The availability of facilities for neuro-trauma care varied across centers; e.g. 40 (57%) had a dedicated neuro-intensive care unit (ICU), 36 (51%) had an in-hospital rehabilitation unit and the organization of the ICU was closed in 64% (n = 45) of the centers. In addition, we found wide variation in processes of care, such as the ICU admission policy and intracranial pressure monitoring policy among centers. CONCLUSION: Even among high-volume, specialized neurotrauma centers there is substantial variation in structures and processes of TBI care. This variation provides an opportunity to study effectiveness of specific aspects of TBI care and to identify best practices with CER approaches

    Genome-wide Analyses Identify KIF5A as a Novel ALS Gene

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    To identify novel genes associated with ALS, we undertook two lines of investigation. We carried out a genome-wide association study comparing 20,806 ALS cases and 59,804 controls. Independently, we performed a rare variant burden analysis comparing 1,138 index familial ALS cases and 19,494 controls. Through both approaches, we identified kinesin family member 5A (KIF5A) as a novel gene associated with ALS. Interestingly, mutations predominantly in the N-terminal motor domain of KIF5A are causative for two neurodegenerative diseases: hereditary spastic paraplegia (SPG10) and Charcot-Marie-Tooth type 2 (CMT2). In contrast, ALS-associated mutations are primarily located at the C-terminal cargo-binding tail domain and patients harboring loss-of-function mutations displayed an extended survival relative to typical ALS cases. Taken together, these results broaden the phenotype spectrum resulting from mutations in KIF5A and strengthen the role of cytoskeletal defects in the pathogenesis of ALS.Peer reviewe
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