The tone range/telemetry interferometer tracking system for support of sounding rocket payloads

Combined range rate and telemetric interferometer system for radar tracking of scientific sounding rocket

Transnational Influence in the Poetry of Sarah Piatt: Poems of Ireland and the American Civil War

Sarah Piatt, a recently recovered nineteenth century poet, is best known, where she is known at all, as an American poet. While this label is certainly appropriate, it should not obscure Piatt’s decidedly international focus, or more precisely, her transnational focus, especially in regard to Ireland. Piatt’s verse, considered by some to be the best poetry of her time second only to the work of Emily Dickinson, is remarkable for its quantity and breadth, but more importantly, for its subversive use of genteel style. Though her poems are generally divided into four overlapping categories, the two thematic classes of her poetry that will be explored in the most detail here are her Civil War poems and her “Irish poems,” which were inspired by an eleven year experience living in Ireland. These poems are examined through close reading and transnational analysis, as a conceptual link exists between Piatt’s perspective of the American South during the American Civil War and her depiction of social injustice in her poems about Ireland and the Irish peasantry. These different contexts illustrate how Piatt brings her experience of civil strife and injustice in the United States to Ireland with her, influencing her understanding of political events in Ireland and her sympathies toward the destitute Irish people. As these conceptual ligaments are rarely one-sided, this paper seeks to illuminate the multi-directional nature of the transnational influence that impacts the way that Sarah Piatt’s poetry negotiates understanding at both local and global levels

Magma Genesis, Degassing, and Mixing in Rifts and Arcs.

Our understanding of igneous petrogenesis is important for a variety of reasons, such as our ability to identify and understand volcanic hazards, ore deposits, and fundamental tectonic processes. This dissertation investigates two aspects of igneous petrogenesis in two distinct tectonic environments: (i) the relationship between mantle volatiles and alkaline lavas in rift environments and (ii) the formation of intermediate magmas in arc environments. Chapter II presents some of the first volatile concentrations from olivine-hosted melt inclusions in the western branch of the East African Rift System. The melt inclusion H2O and CO2 concentrations measured range from ~0.3 to 2.5 wt% and ~30 to 9,950 ppm, respectively, and have elevated Li concentrations and B/Be ratios relative to MORB. Elevated Li and B concentrations have been used as a fluid tracer to investigate the role of fluid additions to the mantle wedge. As such, volatiles subducted during the ~650 Ma Pan-African orogeny are a plausible source for the elevated volatiles. In Chapter III we investigate the plausibility that mixing of basaltic and dacitic magmas with significantly different initial temperatures and viscosities can mix to produce basaltic andesite erupted from Mutnovsky Volcano, Kamchatka. Plagioclase compositions for Mutnovsky basalts, basaltic andesites, and dacites fall into two distinct populations, An80±10 and An50±15. Basaltic andesites contain both plagioclase populations with a distinct gap between populations. Sodic plagioclase in the basaltic andesites show dissolution/resorption textures, indicating disequilibrium. These new data are consistent with mixing of a basaltic and dacitic component to generate the erupted intermediate lavas at Mutnovsky. Chapter IV presents a quantitative model to describe the evolving viscosity of different magmas (melt + crystals, including water content) and determine if these magmas can physically mix for any proportion of each. We test this model with the samples from Mutnovsky as well as published data from Mt. Hood, Oregon, where mixing of basalt and rhyolite is proposed to generate andesites. These results demonstrate that both Mutnovsky and Mt. Hood magmas satisfy all requirements to generate intermediate magmas by magma mixing and that this model can be applied to any volcanic system to determine the likelihood of mixing.PhDGeologyUniversity of Michigan, Horace H. Rackham School of Graduate Studieshttp://deepblue.lib.umich.edu/bitstream/2027.42/113503/1/hudginst_1.pd

Coal-shale interface detection system

A coal-shale interface detection system for use with coal cutting equipment consists of a reciprocating hammer on which an accelerometer is mounted to measure the impact of the hammer as it penetrates the ceiling or floor surface of a mine. A pair of reflectometers simultaneously view the same surface. The outputs of the accelerometer and reflectometers are detected and jointly registered to determine when an interface between coal and shale is being cut through

A Survey for Alkaloids in Hawaiian Plants, III

Volume: 16Start Page: 63End Page: 6

Intrathecal Urokinase as a treatment for intraventricular hemorrhage in the preterm infant

Despite improvements in the care of preterm infants, intraventricular hemorrhage (IVH) and posthemorrhagic hydrocephalus (PHH) continue to be frequent occurrences in this patient population. Shunt procedures in these children are frequently complicated by obstruction and/or infection. As the hydrocephalus is usually caused by an obliterative arachnoiditis due to contact of the blood with the basilar meninges, it was postulated that infusion of urokinase into the ventricles of infants who have sustained an IVH would clear the blood, mitigate the arachnoiditis, and prevent the progression of PHH. Accordingly, 18 preterm infants who had sustained IVH and subsequently developed PHH were treated with intraventricular urokinase instilled via a surgically implanted subcutaneous reservoir. There were no complications associated with the urokinase. Infants were divided into two dosage groups: low dose (110,000–140,000 IU total) and high dose (280,000 IU total). One infant in the low-dose group died at 1 month of life of respiratory complications. In the low-dose group, 3 of 8 (37%) infants required shunt placement; in the high-dose group, all 9 required shunt placement. For the total group, the shunt rate was 71 %. This compares to a historical control group shunt rate of 92%. While the difference between the treatment group as a whole and control group approaches, but does not reach, statistical significance (p = 0.068), there was a significant reduction in the shunt rate when the low-dose group was considered separately (p \u3c 0.002). For those infants that required shunt placement, there were fewer shunt revisions performed in the treatment group than in the control group during the first 24 months following shunt placement: 0.67 versus 1.5 shunt revisions/shunted child. Initial experience with intraventricular urokinase following IVH and PHH in preterm infants suggests a beneficial effect in reducing the shunt revision rate in both high- and low-dose groups. Reduction in shunt placement rate is seen only in the low-dose group

Fate and effects of experimental oil spills in an eastern coastal plain marsh system : final report

The objectives of this program conducted over a four year period were to determine the ecological effects, chemical fate and microbial responses of marsh systems to crude oil spills. To conduct these studies in a manner which maximized control, large enclosures were constructed in a natural mesohaline marsh (Figure 1). Both fresh South Louisiana crude and artificially aged South Louisiana crude were studied

Biodegradable and compostable alternatives to conventional plastics

This article is available open access through the publisher’s website at the link below. Copyright @ 2009 The Royal Society.Packaging waste forms a significant part of municipal solid waste and has caused increasing environmental concerns, resulting in a strengthening of various regulations aimed at reducing the amounts generated. Among other materials, a wide range of oil-based polymers is currently used in packaging applications. These are virtually all non-biodegradable, and some are difficult to recycle or reuse due to being complex composites having varying levels of contamination. Recently, significant progress has been made in the development of biodegradable plastics, largely from renewable natural resources, to produce biodegradable materials with similar functionality to that of oil-based polymers. The expansion in these bio-based materials has several potential benefits for greenhouse gas balances and other environmental impacts over whole life cycles and in the use of renewable, rather than finite resources. It is intended that use of biodegradable materials will contribute to sustainability and reduction in the environmental impact associated with disposal of oil-based polymers. The diversity of biodegradable materials and their varying properties makes it difficult to make simple, generic assessments such as biodegradable products are all ‘good’ or petrochemical-based products are all ‘bad’. This paper discusses the potential impacts of biodegradable packaging materials and their waste management, particularly via composting. It presents the key issues that inform judgements of the benefits these materials have in relation to conventional, petrochemical-based counterparts. Specific examples are given from new research on biodegradability in simulated ‘home’ composting systems. It is the view of the authors that biodegradable packaging materials are most suitable for single-use disposable applications where the post-consumer waste can be locally composted.EPSR