Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 43 for “"sentinels"”.
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Native plants as sentinels of tritium contamination
… plant species growing in the Mojave Desert, as sentinels of tritium contamination below earthen caps covering radioactive waste. The plants, grown in hydroponic tanks and 3 m columns, were evaluated for treatments representing three different levels of tritium contamination. Tritium, a …
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Swimming sentinels : climate clues from stranded marine mammals
From skinny sea lions on beaches in California, to hundreds of enormous dead whales in the fjords of Chile, scientists have been recently puzzled by a spate of dead and dying marine mammals. These events are so complicated- influenced by disease, biotoxins, ecosystem changes, and human …
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Caracals as sentinels for metal exposure in a human-transformed landscape
Urbanisation and associated anthropogenic activity release large quantities of metallic elements and metalloids into the environment. Due to their toxicity, environmental persistence and bioaccumulative nature, these chemical pollutants threaten wildlife and human health. As urbanisation increases …
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Monocyte Derived Dendritic Cells: Sentinels and Translators of Immune Response to Staphylococcus aureus
<i>Staphylococcus aureus</i> is a versatile opportunistic pathogen causing a wide spectrum of diseases in both humans and animals. My research focused on characterization of the immune responses of monocyte derived dendritic cells (DC) to <i>S. aureus</i>. We initially evaluated the potential of …
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Silent Sentinels: Archaeology, Magic, and the Gendered Control of Domestic Boundaries in New England, 1620-1725
<p>The following dissertation is an historical archaeological study of the material culture of gendered protective magic used by Anglo-Europeans in seventeenth-century New England as a tactic to construct boundaries that mitigated perceived personal, social, spiritual, and environmental dangers. …
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Silent Sentinels: Archaeology, Magic, and the Gendered Control of Domestic Boundaries in New England, 1620-1725
<p>The following dissertation is an historical archaeological study of the material culture of gendered protective magic used by Anglo-Europeans in seventeenth-century New England as a tactic to construct boundaries that mitigated perceived personal, social, spiritual, and environmental dangers. …
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Shrubs as Sentinels of Ordnance Contamination: Using Plant Physiology and Remote Sensing to Detect TNT in Soils
Methods for rapid, safe and effective detection of unmapped buried ordnance are vital to the protection of humans and environmental quality throughout the world. This study aimed to investigate the use of phytosensing and to understand the physiological response of woody plants to …
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Pinnipeds as sentinels of antimicrobial resistance: mapping antimicrobial resistance genes in the waters of the United Kingdom
… the marine habitat. Pinnipeds are often used as sentinels of ocean health because they are long lived, apex predators that forage over wide areas and thus can represent the food web over large regions. They can also be relatively easily sampled when they are on land. Documenting the prevalence of …
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The Sentinels of Order: A Case Study of Social Control and the Minneapolis Settlement House Movement, 1897-1950 (Minnesota)
The majority of the literature on American settlements focuses on Hull House, Henry Street Settlement, Chicago Commons, and South End House. Although these settlements had a significant influence on city and often, national politics, they comprised only a small portion of the national settlement …
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Trends in Canine Lyme Disease on the Eastern Shore of Virginia, 2000-2005
… Research has shown that dogs can be used as sentinels for human infection of Lyme disease. The purpose of this 5-year, retrospective study was to determine if there was any evidence that the incidence of canine Lyme disease has increased between 2000 and 2005 in Accomack and Northampton …
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Crisis and progress: The rhetoric and ideals of a nineteenth century reformer, George William Curtis (1824-1892)
… like Curtis, considered their role to be that of sentinels and tribunes of the ""public interest"". In this role, they were instrumental in setting the parameters and defining the terms of debate over government's role in fostering the ""good society"" in America. These reformers disdained theory, …
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Transmission of La Crosse Virus in Southwest Virginia: Role of Accessory Vectors, Microfilarial Coinfection and Canine Seroprevalence
… Dogs were used to determine their efficacy as sentinels for assessing the distribution of LAC virus in southwest Virginia. Canine serum samples were tested using plaque reduction neutralization (PRNT) assays. Of the 436 collected canine serum samples, 21 (4.8%) were positive for LAC virus …
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Novel protocols to induce tolerance to solid organ transplants
Dendritic cells (DCs) are the sentinels of the immune system. They mature at the encounter of the appropriate stimuli or danger signals, which induce them to perform pro-inflammatory antigen presentation to naïve and memory T cells, resulting in inflammation. Remaining in an immature state however, …
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Optimizing Trichogramma ostriniae (Hymenoptera: Trichogrammatidae) releases to control European corn borer, Ostrinia nubilalis (Lepidoptera: Crambidae) in bell pepper
… corn borer, Ostrinia nubilalis Hübner, egg mass sentinels. Adult T. ostriniae dispersed quickly throughout the 0.4 ha (1 acre) sampling area. Parasitism and sticky card captures were highest close to the release point and decreased with increasing distance. Sticky card data were a good fit to the …
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Ecological and Anthropogenic Influences on a Sentinel Species' Gut Microbiome
… diseases and pathogens. Therefore, their role as sentinels of ecosystems, as well as a greater comprehension of what aspects of habitat are driving the gut microbiome, merits conservation and research. I seek to add to our understanding of what habitat factors are driving a sentinel species’ …
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At the Conflux
… skyscrapers watching over all, unmoved—soaring sentinels of steel and glass, its patterns of people rhythmically engaging with the machinery of modern life. A spacious Japanese flavored soundscape contrasts with the frenetic energy of the imagery. Piano, violin, trumpet, trombone and upright …
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Investigating the negative regulatory role of neurogranin in IgE-mediated mast cell activation
Mast cells are granulocytic immune sentinels that drive the chronic inflammatory state characteristic of allergic pathologies, through the release of a plethora of pro-inflammatory mediators following IgE-mediated activation. Calcium mobilization following mast cell activation is essential for …
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Understanding and modulating macrophage metabolism for improving inflammatory functions against Trypanosoma cruzi infection
… efficacy. Macrophages are one of the first sentinels to T. cruzi infection yet are susceptible to infection. Prior research indicated that glycolysis and broken Krebs cycle support pro-inflammatory functions of macrophages. This study advances our understanding of how T. cruzi infection …
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Application of attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy to measure sub-lethal effects of potential mutagens
… contaminant exposure effects in the tissues of sentinels. IR techniques such as attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy, was able to detect changes in various tissue samples exposed to varying levels of polycyclic aromatic hydrocarbons (PAHs). This …
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An investigation on humpback whales' distribution in relation to Antarctic sea ice in the IDCR/SOWER dataset
… whales (Megaptera novaeangliae) as climate sentinels since their feeding ecology is inextricably linked to the oceanic features around Antarctica, and to the seasonal sea ice. The changing Antarctic cryosphere in response to climate change threatens not only their habitat but also their prey …
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