226 research outputs found

    Between heaven and earth: the religious worlds people make and the scholars who study them

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    Title: Between heaven and earth: the religious worlds people make and the scholars who study them. Author: Orsi, Robert A Between heaven and earth 256 p. Publisher: Princeton, NJ : Princeton Univ Pr, 2005

    The making of the virgin: Mary in the \u27Protevangelium of James\u27

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    The Protevangelium of James is an important early Christian text narrating the birth, childhood and adolescence of Mary, the mother of Jesus. This thesis explores Mary\u27s transformation from a secondary New Testament figure into the embodiment of sacred purity. The image of Mary in the Protevangelium of James is different than other early Christian representations, emphasizing both purity and a recapitulation with Eve. As a means to better understand Mary\u27s purity in the narrative, I explore the theories of three scholars: Jacob Neusner, Beverly Roberts Gaventa and Mary Douglas. I conclude that Douglas\u27s theories make the most sense for comprehending Mary\u27s purity in the Protevangelium of James. Applying Douglas\u27s view of purity to the narrative, I establish that it is the author\u27s religious construction of reality that creates an entirely new perspective of Mary. These conclusions are not only important for the study of Mary in early Christianity, but also for contemporary perceptions of Mary. This new representation of Mary promotes both equality for women and a brighter picture of humanity

    Wolastoqiyik and Mi’kmaq Grandmothers - Land/Water Defenders Sharing and Learning Circle: Generating Knowledge for Action

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    This report is a summary of the Grandmothers/Defenders’ stories and are interwoven with corresponding news articles, press releases, and other public documents. This is followed by an overview of some of the critical common issues and importantly, strategies for moving forward proposed by the Grandmothers/Defenders. The Grandmother’s Report is a collection of stories told by Wolastoqiyik Grandmother/Defenders against the Sisson Mine in New Brunswick and Mi’kmaq Grandmothers against the Alton Gas project in Nova Scotia at the event, Indigenous Grandmothers Sharing and Learning Circle: Generating Knowledge for Action, held at the Tatamagouche Centre in Nova Scotia, January 26 to 27, 2020. Like the MMIWG Report’s Calls for Extractive and Development Industries, the Grandmothers’ Report urges further research on environmental approvals and granting permits for resource projects to proceed; however, the Grandmothers’ Report also calls for the restoration of ancestral governance systems that honour women’s leadership, as well as maintaining and building new allied relationships and granting personhood rights to river systems. The Grandmothers/Defenders’ stories give witness to how two worldviews, Indigenous and colonial, intersect and collide. According to Dr. Pictou’s report, the Indigenous worldview is often neglected, excluded from, or distorted in the media and in other forms of knowledge production practices like Environmental Assessment reports

    A temperate river estuary is a sink for methanotrophs adapted to extremes of pH, temperature and salinity

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    River Tyne (UK) estuarine sediments harbour a genetically and functionally diverse community of methane-oxidizing bacteria (methanotrophs), the composition and activity of which were directly influenced by imposed environmental conditions (pH, salinity, temperature) that extended far beyond those found in situ. In aerobic sediment slurries methane oxidation rates were monitored together with the diversity of a functional gene marker for methanotrophs (pmoA). Under near in situ conditions (4-30°C, pH 6-8, 1-15gl-1 NaCl), communities were enriched by sequences affiliated with Methylobacter and Methylomonas spp. and specifically a Methylobacter psychrophilus-related species at 4-21°C. More extreme conditions, namely high temperatures ≄40°C, high ≄9 and low ≀5 pH, and high salinities ≄35gl-1 selected for putative thermophiles (Methylocaldum), acidophiles (Methylosoma) and haloalkaliphiles (Methylomicrobium). The presence of these extreme methanotrophs (unlikely to be part of the active community in situ) indicates passive dispersal from surrounding environments into the estuary

    A new model for the formation of microbial polygons in a coastal sabkha setting

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    The stratigraphic record of microbially induced sedimentary structures spans most of the depositional record. Today, microbes continue to generate, bind and modify sediments in a vast range of depositional environments. One of the most cited of these settings is the coastal microbial mat system of the Persian/Arabian Gulf. In this setting, an extensive zone of microbial mat polygons has previously been interpreted as resulting from desiccation‐related contraction during episodic drying. This study employs 15 years of field‐based monitoring of the interaction between environmental factors and the development and evolution of polygon morphologies to test the desiccation model in this setting. On the basis of these observations, a new model is proposed that accounts for the genesis and development of microbial polygons without the need for desiccation‐induced shrinkage. Conversely, the formation, development and erosion of microbial polygons is a direct result of the production of large amounts of organic matter in a healthy, yet spatially limited, microbial community. The recognition of microbial polygons has previously been applied as a diagnostic tool for the reconstruction of ancient depositional environments. The present study calls these interpretations into doubt. It is inferred that preservation of the microbial polygons as a recognizable form would be rare. Biological degradation and compaction will reduce polygons to produce the ‘wispy’ laminae that are a common feature of ancient sabkha lithofacies

    Perspectives of Pedagogical Change within a Broadcast STEM Course

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    As calls for pedagogical transformation of undergraduate science, technology, engineering, and mathematics (STEM) instruction intensify, the pace of change remains slow. The literature shows that research-based instructional strategies transfer only sporadically into STEM instructional practice. Difficulties associated with implementation and sustainment of instructional change may appear daunting— if not insurmountable—to many STEM change agents and teaching faculty. Subsequently, the path towards systematic and lasting pedagogical transformation in post-secondary STEM stands largely uncharted. To understand how challenges faced by STEM educators engaged in pedagogical change may be overcome, this paper uses qualitative inquiry to explore an emergent process of teacher change. The change process took place during implementation of an online innovation within an undergraduate engineering calculus course taught via synchronous broadcast at a mid-size, Western, public university. The instructional innovation required first year calculus students to participate in an asynchronous, online discussion forum for graded credit. Data, consisting of written reflections and transcribed interviews, were gathered from three STEM faculty members who each played a different role in the change process: a mathematics instructor implementing the online forum within his course; an engineering faculty peer-mentor assisting with the implementation of the online forum; and a STEM education faculty member evaluating the implementation and observing the process of change. Situated within the interpretive research paradigm, this study uses exploratory thematic analysis of narrative data to understand the ways in which contextual factors may influence pedagogical change

    Cardiovascular Disease

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    <p>Abstract</p> <p>Health Issue</p> <p>Cardiovascular disease (CVD) is the leading cause of death in Canadian women and men. In general, women present with a wider range of symptoms, are more likely to delay seeking medial care and are less likely to be investigated and treated with evidence-based medications, angioplasty or coronary artery bypass graft than men.</p> <p>Key Findings</p> <p>In 1998, 78,964 Canadians died from CVD, almost half (39,197) were women. Acute myocardial infarction, which increases significantly after menopause, was the leading cause of death among women.</p> <p>Cardiovascular disease accounted for 21% of all hospital admissions for Canadian women over age 50 in 1999. Admissions to hospital for ischemic heart disease were more frequent for men, but the mean length of hospital stay was longer for women.</p> <p>Mean blood pressure increases with age in both men and women. After age 65, however, high blood pressure is more common among Canadian women. More than one-third of postmenopausal Canadian women have hypertension.</p> <p>Diabetes increases the mortality and morbidity associated with CVD in women more than it does in men. Depression also contributes to the incidence and recovery from CVD, particularly for women who experience twice the rate of depression as men.</p> <p>Data Gaps and Recommendations</p> <p>CVD needs to be recognized as a woman's health issue given Canadian mortality projections (particularly heart failure). Health professionals should be trained to screen, track, and address CVD risk factors among women, including hypertension, elevated lipid levels, smoking, physical inactivity, depression, diabetes and low socio-economic status.</p

    Electrobioremediation of oil spills

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    Annually, thousands of oil spills occur across the globe. As a result, petroleum substances and petrochemical compounds are widespread contaminants causing concern due to their toxicity and recalcitrance. Many remediation strategies have been developed using both physicochemical and biological approaches. Biological strategies are most benign, aiming to enhance microbial metabolic activities by supplying limiting inorganic nutrients, electron acceptors or donors, thus stimulating oxidation or reduction of contaminants. A key issue is controlling the supply of electron donors/acceptors. Bioelectrochemical systems (BES) have emerged, in which an electrical current serves as either electron donor or acceptor for oil spill bioremediation. BES are highly controllable and can possibly also serve as biosensors for real time monitoring of the degradation process. Despite being promising, multiple aspects need to be considered to make BES suitable for field applications including system design, electrode materials, operational parameters, mode of action and radius of influence. The microbiological processes, involved in bioelectrochemical contaminant degradation, are currently not fully understood, particularly in relation to electron transfer mechanisms. Especially in sulfate rich environments, the sulfur cycle appears pivotal during hydrocarbon oxidation. This review provides a comprehensive analysis of the research on bioelectrochemical remediation of oil spills and of the key parameters involved in the process

    Implicit Beliefs About Change: A Theory-Grounded Measure Applied to Community Organizations Serving Children, Youth, and Families

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    The aim of this study was to design and evaluate a theory-grounded measure that taps staff beliefs about the possibility for change in an organization which serves children, youth and families at the community level. The rationale for measuring staff beliefs about change derived from a motivation theory that features two contrasting beliefs structures (entity vs. incremental), and the goals and behavioral dispositions associated with each (Dweck & Leggett, 1988). Twenty-nine individuals associated with the community-based organization completed the newly developed Implicit Beliefs About Change Scale (IBACS) and participatedi n a semi-structured interview. Quantitative analyses indicated that the IBACS has good internal consistency, and yields sufficient response variance. Content analysis of the semi-structured interviews, used to assess the scale\u27s construct validity, uncovered distinctive and theory-consistent behavioral dispositions among those staff members whose beliefs regarding change could be characterized as either incremental or entity in nature. Implications for staff development and future research are discussed

    Distribution of thermophilic endospores in a temperate estuary indicate that dispersal history structures sediment microbial communities

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    Endospores of thermophilic bacteria are found in cold and temperate sediments where they persist in a dormant state. As inactive endospores that cannot grow at the low ambient temperatures, they are akin to tracer particles in cold sediments, unaffected by factors normally governing microbial biogeography (e.g., selection, drift, mutation). This makes thermophilic endospores ideal model organisms for studying microbial biogeography since their spatial distribution can be directly related to their dispersal history. To assess dispersal histories of estuarine bacteria, thermophilic endospores were enriched from sediments along a freshwater‐to‐marine transect of the River Tyne in high temperature incubations (50°C). Dispersal histories for 75 different taxa indicated that the majority of estuarine endospores were of terrestrial origin; most closely related to bacteria from warm habitats associated with industrial activity. A subset of the taxa detected were marine derived, with close relatives from hot deep marine biosphere habitats. These patterns are consistent with the sources of sediment in the River Tyne being predominantly terrestrial in origin. The results point to microbial communities in estuarine and marine sediments being structured by bi‐directional currents, terrestrial run‐off and industrial effluent as vectors of passive dispersal and immigration
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