Oregon Undergraduate Research Journal: Vol. 5 No. 1 (2013)

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https://hdl.handle.net/1794/23404

Cover art by Sage Cruser

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Now showing 1 - 7 of 7

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Editor Introduction
(University of Oregon, 2013-11-20) Schafer, Zeph
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Editorial: Expanding Opportunities for Research
(University of Oregon, 2013-11-20) Carver, Deborah A.
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Artist's Statement: "Dragonfly Halo"
(University of Oregon, 2014-01-05) Cruser, Sage
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Apartment Price Models for the Glenwood Riverfront Development
(University of Oregon, 2013-11-18) Friedman, Joseph
This study examines the rent prices of the student housing apartment market surrounding the University of Oregon. The first key component of this study includes a Hedonic price model that helps evaluate what apartment complex amenities and characteristics are most important and influential in determining rental rates in the local community. Secondly, using the information from our Hedonic price model, this study will help the city of Springfield in their plans to develop a student housing project in the Glenwood Riverfront district, located along the Willamette River. Specifically, this study of rental prices and apartment complex attributes should be useful in evaluating a potential student housing project to ensure sufficient rental profit for developers and for tax revenues for Springfield under their current development budget constraints.
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Prey Detection and Feeding Success of the Comb Jellyfish Mnemiopsis leidyi on Copepods in Still and Turbulent Waters
(University of Oregon, 2013-11-18) Chisholm, Clare Elizabeth
The comb jelly or ctenophore, Mnemiopsis leidyi, is a voracious predator in both its native and non-native habitats. Though M. leidyi inhabits coastal waters that are frequently turbulent, previous feeding studies have been conducted in still water tanks. This study aimed to research feeding behaviors in turbulent waters, which is more representative of the natural environment. Interactions between the free-swimming ctenophores and copepod prey, such as Acartia tonsa, were observed and recorded in a laboratory turbulence tank (n = 73). Turbulence was created using submersible speakers, and the interactions were recorded using a video camera. Capture efficiency denoted interactions containing direct contact between copepods and M. leidyi that led to eventual capture, frequently after multiple contacts. Overall copepod capture efficiency was similar in still (48%) and turbulent (43%) water, as were the overall prey retention rates for each (still = 58%; turbulent = 57%). However, M. leidyi exhibited anticipatory responses, defined as altering the position of feeding structures, nearly twice as often in still (41%) waters than in turbulent (20%) waters. The hydromechanical “noise” produced by background turbulence may inhibit the capacity of the ctenophore to detect and respond to fluid motions produced by its prey.
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The Virgin Knight: Spenser's Embodiment of Duality in Elizabethan England
(University of Oregon, 2013-11-18) Arsenault, Chelsea
Edmund Spenser's poetry notoriously battles itself, contorting the surface of his poetical works into an ambiguous representation of how he perceived Elizabethan England in terms of theology, sexuality, nobility, and ideology. Written as what he termed "an historical fiction," Spenser allowed his imagination to capture and epitomize the perspectives of Elizabethan society-- but in a twisted fashion. The primary focus of appearance versus reality consumed him and became an encompassing factor of his work. In fact, he allowed one of his protagonists to become the embodiment of his struggle: Britmart, the virgin knight, assumes a life of chastity and tribadism; ferocity and delicacy; the penetration and the penetrated. Her conflicting role as a chaste woman who exceeds the boundaries of what was expected for her gender encompasses her identity as an androgynous woman who refuses to abide by her expected gender performativity. When she confronts Malecasta at the House of Ioue, she becomes exposed to her conflicting, tense nature that fuels her essence as a penetrating virgin, allowing Spenser to indirectly expose Elizabethan England to restrictions on gender roles and sexuality due to his wordplays with language, means of representation, and repeated notions of dualism. Britomart, the virgin knight, embraces her character while serving as a canvas for Spenser to echo or defy common ideologies in Elizabethan England in terms of sexuality, chivalry, and identity.
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Bioremediation Mariculture in Zanzibar, Tanzania: A Viability Assessment of Using Bath Sponge and Pearl Oyster Farms to Filter Highly Polluted Waters in the Zanzibar Channel
(University of Oregon, 2013-11-18) Oakland, Hayley Catherine
Bioremediation of polluted water off the coastline of the urban center of Zanzibar—Stone Town, Unguja—was assessed for implementation feasibility through bath sponge and pearl oyster mariculture. A vast research base of the city’s coastal area exists, including the pollution concentrations at various locations, the ramifications of this pollution on the fringing ecosystems, and the relevant water circulation system of eddies and passageways produced by the north flowing East African Counter Current. In following the experimental examples of bioremediation projects around the world, this study tested facets of the filtration abilities of marine sponges and oysters. Both organisms suggested strong pollution filtration abilities. Phosphate concentrations decreased from an average of 3.93 ug/L (micrograms per liter) to 1.33 and 1.73 ug/L for sponges and oysters, respectively. Unique capabilities of each organism were displayed in the experiments. The marine sponges visibly eliminated the turbidity level in the 36-hour study period. The marine oysters were suggested to chemically convert the dissolved nitrates through the tested increase in ammonium concentration from an average of 4.01 ug/L in the contaminated water to and average replicate concentration of 21.5 ug/L. The respective mariculture techniques were examined along with management logistics to assess the viability of implementing the mariculture for the pollution remediation. It was concluded that the mariculture techniques could be feasibly established by carefully collaborating with the nature of the pollution distribution, the consultation and aid of private and governmental organizations and further background scientific research.

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