121 research outputs found

    Collaborating to transform and improve education systems: A playbook for family-school engagement

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    This playbook on family-school collaboration makes the case for why family engagement is essential for education systems transformation and why families and schools must have a shared understanding of what a good quality education looks like. By providing evidence-based strategies from around the world and other hands-on tools that school leaders and partners can adopt and use in their local contexts, it aims to help leapfrog education inequality so that all young people can have a 21st-century education

    Is the Earth Crying Wolf? Exploring Knowledge Source and Certainty in High School Students\u27 Analysis of Global Warming News

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    The marked contrast between the scientific consensus on global warming and public beliefs indicates a need to research how high schoolers, as future citizens, engage with and make meaning from news articles on such topics. In the case of socioscientific issues (SSIs) such as global warming, students’ acquisition of knowledge from the news is mediated by their epistemic understandings of the nature of science (NOS) and use of informal reasoning in evaluating claims, evidence, and sources. This exploratory qualitative study examined twelve U.S. high school students’ understandings, opinions, and epistemic beliefs concerning global warming knowledge. Researchers examined microgenetic changes as students discussed global warming during semi-structured interviews and a close reading of global warming news texts. Although results showed that most students could articulate a working concept of global warming, in follow-up questions, a subset offered personal opinions that differed from or contradicted their previously stated understandings. Meanwhile, students who offered opinions consistent with the scientific consensus often argued that the dangers of global warming were exaggerated by politicians and scientists who wished to profit from the issue. This study suggests a need for more explicit focus on NOS and scientific news literacy in curricula, as well as further research into the interplay between epistemic beliefs and the informal reasoning students use to negotiate diverse sources of SSI knowledge—from the classroom to the news media and public life

    Stable mucus-associated bacterial communities in bleached and healthy corals of Porites lobata from the Arabian Seas

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    Coral reefs are subject to coral bleaching manifested by the loss of endosymbiotic algae from coral host tissue. Besides algae, corals associate with bacteria. In particular, bacteria residing in the surface mucus layer are thought to mediate coral health, but their role in coral bleaching is unknown. We collected mucus from bleached and healthy Porites lobata colonies in the Persian/Arabian Gulf (PAG) and the Red Sea (RS) to investigate bacterial microbiome composition using 16S rRNA gene amplicon sequencing. We found that bacterial community structure was notably similar in bleached and healthy corals, and the most abundant bacterial taxa were identical. However, fine-scale differences in bacterial community composition between the PAG and RS were present and aligned with predicted differences in sulfur- and nitrogen-cycling processes. Based on our data, we argue that bleached corals benefit from the stable composition of mucus bacteria that resemble their healthy coral counterparts and presumably provide a conserved suite of protective functions, but monitoring of post-bleaching survival is needed to further confirm this assumption. Conversely, fine-scale site-specific differences highlight flexibility of the bacterial microbiome that may underlie adjustment to local environmental conditions and contribute to the widespread success of Porites lobata.This publication is based upon work supported by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award Nos FCC/1/1973-21-01 and FCC/1/1973-22-01

    Pró-bicho Pelotas

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    Trabalho apresentado no 31º SEURS - Seminário de Extensão Universitária da Região Sul, realizado em Florianópolis, SC, no período de 04 a 07 de agosto de 2013 - Universidade Federal de Santa Catarina.Desenvolvido desde 2012, o Projeto Pró-Bicho Pelotas visa auxiliar protetores voluntários de animais e a ONG SOS Pelotas (organização que atua no resgate e no tratamento de animais abandonados) na obtenção de imagens fotográficas com qualidade dos animais resgatados e que se encontram disponíveis para adoção responsável. Através do email do projeto são agendadas as sessões fotográficas dos animais. As fotografias são obtidas com equipamento profissional e em um fundo infinito portátil, construído pelos discentes. Desta forma, a obtenção de imagens pode ser realizada no próprio Centro de Artes ou no local onde os animais se encontram. Após a edição e o tratamento, as imagens são veiculadas em álbuns na página do Projeto na rede social Facebook. Juntamente com os álbuns são divulgados os contatos do protetor que está cuidando do animais até a adoção. O agendamento das sessões, a obtenção de imagens, seu tratamento e sua divulgação é realizado por discentes do Centro de Artes da UFPel que cursaram as disciplinas de Introdução à Fotografia e Fotografia nos cursos de Artes Visuais (Bacharelado e Licenciatura), Design Gráfico e Design Digital. Além de divulgar os álbuns do projeto, na página também são divulgados animais que estão para adoção e cujo protetor encaminhou as fotografias e solicitações de divulgação de animais desaparecidos ou encontrados. As publicações na página atingem semanalmente cerca de 10 mil usuários. Em 2012, dos 164 animais fotografados, entre cães e gatos, mais de 65% foram adotados

    Foresight Africa: Top Priorities for the Continent 2020-2030

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    The new year 2020 marks the beginning of a promising decade for Africa. Through at least the first half of the decade, economic growth across Africa will continue to outperform that of other regions, with the continent continuing to be home to seven of the world's 10 fastest-growing economies. Collective action among African and global policymakers to improve the livelihoods of all under the blueprint of the Sustainable Development Goals and the African Union's Agenda 2063 is representative of the shared energy and excitement around Africa's potential. With business environments improving, regional integration centered around the African Continental Free Trade Agreement progressing, and the transformational technologies of Fourth Industrial Revolution spreading, never before has the region been better primed for trade, investment, and mutually beneficial partnerships. The recent, unprecedented interest of an increasingly diversified group of external partners for engagement with Africa highlights this potential. Despite the continent's promise, though, obstacles to success linger, as job creation still has not caught up with the growing youth labor force, gaps in good and inclusive governance remain, and climate change as well as state fragility threaten to reverse the hard-fought-for gains of recent decades.This special edition of Foresight Africa highlights the triumphs of past years as well as strategies from our experts to tackle forthcoming, but surmountable, obstacles to a prosperous continent by 2030

    Alcohol intake and endogenous sex hormones in women: Meta‐analysis of cohort studies and Mendelian randomization

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    Background: The mechanisms underlying alcohol‐induced breast carcinogenesis are not fully understood but may involve hormonal changes. Methods: Cross‐sectional associations were investigated between self‐reported alcohol intake and serum or plasma concentrations of estradiol, estrone, progesterone (in premenopausal women only), testosterone, androstenedione, dehydroepiandrosterone sulfate, and sex hormone binding globulin (SHBG) in 45 431 premenopausal and 173 476 postmenopausal women. Multivariable linear regression was performed separately for UK Biobank, European Prospective Investigation into Cancer and Nutrition, and Endogenous Hormones and Breast Cancer Collaborative Group, and meta‐analyzed the results. For testosterone and SHBG, we also conducted Mendelian randomization and colocalization using the ADH1B (alcohol dehydrogenase 1B) variant (rs1229984). Results: Alcohol intake was positively, though weakly, associated with all hormones (except progesterone in premenopausal women), with increments in concentrations per 10 g/day increment in alcohol intake ranging from 1.7% for luteal estradiol to 6.6% for postmenopausal dehydroepiandrosterone sulfate. There was an inverse association of alcohol with SHBG in postmenopausal women but a small positive association in premenopausal women. Two‐sample randomization identified positive associations of alcohol intake with total testosterone (difference per 10 g/day increment: 4.1%; 95% CI, 0.6–7.6) and free testosterone (7.8%; 4.1–11.5), and an inverse association with SHBG (–8.1%; –11.3% to –4.9%). Colocalization suggested a shared causal locus at ADH1B between alcohol intake and higher free testosterone and lower SHBG (posterior probability for H4, 0.81 and 0.97, respectively). Conclusions: Alcohol intake was associated with small increases in sex hormone concentrations, including bioavailable fractions, which may contribute to its effect on breast cancer risk

    The pathogenesis of low pathogenicity H7 avian influenza viruses in chickens, ducks and turkeys

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    <p>Abstract</p> <p>Background</p> <p>Avian influenza (AI) viruses infect numerous avian species, and low pathogenicity (LP) AI viruses of the H7 subtype are typically reported to produce mild or subclinical infections in both wild aquatic birds and domestic poultry. However relatively little work has been done to compare LPAI viruses from different avian species for their ability to cause disease in domestic poultry under the same conditions. In this study twelve H7 LPAI virus isolates from North America were each evaluated for their comparative pathogenesis in chickens, ducks, and turkeys.</p> <p>Results</p> <p>All 12 isolates were able to infect all three species at a dose of 10<sup>6 </sup>50% egg infectious doses based on seroconversion, although not all animals seroconverted with each isolate-species combination. The severity of disease varied among isolate and species combinations, but there was a consistent trend for clinical disease to be most severe in turkeys where all 12 isolates induced disease, and mortality was observed in turkeys exposed to 9 of the 12 viruses. Turkeys also shed virus by the oral and cloacal routes at significantly higher titers than either ducks or chickens at numerous time points. Only 3 isolates induced observable clinical disease in ducks and only 6 isolates induced disease in chickens, which was generally very mild and did not result in mortality. Full genome sequence was completed for all 12 isolates and some isolates did have features consistent with adaptation to poultry (e.g. NA stalk deletions), however none of these features correlated with disease severity.</p> <p>Conclusions</p> <p>The data suggests that turkeys may be more susceptible to clinical disease from the H7 LPAI viruses included in this study than either chickens or ducks. However the severity of disease and degree of virus shed was not clearly correlated with any isolate or group of isolates, but relied on specific species and isolate combinations.</p

    Metabolite-related dietary patterns and the development of islet autoimmunity

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    The role of diet in type 1 diabetes development is poorly understood. Metabolites, which reflect dietary response, may help elucidate this role. We explored metabolomics and lipidomics differences between 352 cases of islet autoimmunity (IA) and controls in the TEDDY (The Environmental Determinants of Diabetes in theYoung) study. We created dietary patterns reflecting pre-IA metabolite differences between groups and examined their association with IA. Secondary outcomes included IA cases positive for multiple autoantibodies (mAb+). The association of 853 plasma metabolites with outcomes was tested at seroconversion to IA, just prior to seroconversion, and during infancy. Key compounds in enriched metabolite sets were used to create dietary patterns reflecting metabolite composition, which were then tested for association with outcomes in the nested case-control subset and the full TEDDY cohort. Unsaturated phosphatidylcholines, sphingomyelins, phosphatidylethanolamines, glucosylceramides, and phospholipid ethers in infancy were inversely associated with mAb+ risk, while dicarboxylic acids were associated with an increased risk. An infancy dietary pattern representing higher levels of unsaturated phosphatidylcholines and phospholipid ethers, and lower sphingomyelins was protective for mAb+ in the nested case-control study only. Characterization of this high-risk infant metabolomics profile may help shape the future of early diagnosis or prevention efforts

    Building consensus around the assessment and interpretation of Symbiodiniaceae diversity

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    Within microeukaryotes, genetic variation and functional variation sometimes accumulate more quickly than morphological differences. To understand the evolutionary history and ecology of such lineages, it is key to examine diversity at multiple levels of organization. In the dinoflagellate family Symbiodiniaceae, which can form endosymbioses with cnidarians (e.g., corals, octocorals, sea anemones, jellyfish), other marine invertebrates (e.g., sponges, molluscs, flatworms), and protists (e.g., foraminifera), molecular data have been used extensively over the past three decades to describe phenotypes and to make evolutionary and ecological inferences. Despite advances in Symbiodiniaceae genomics, a lack of consensus among researchers with respect to interpreting genetic data has slowed progress in the field and acted as a barrier to reconciling observations. Here, we identify key challenges regarding the assessment and interpretation of Symbiodiniaceae genetic diversity across three levels: species, populations, and communities. We summarize areas of agreement and highlight techniques and approaches that are broadly accepted. In areas where debate remains, we identify unresolved issues and discuss technologies and approaches that can help to fill knowledge gaps related to genetic and phenotypic diversity. We also discuss ways to stimulate progress, in particular by fostering a more inclusive and collaborative research community. We hope that this perspective will inspire and accelerate coral reef science by serving as a resource to those designing experiments, publishing research, and applying for funding related to Symbiodiniaceae and their symbiotic partnerships.journal articl
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