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2019

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The Response Of Juvenile Coho And Chinook Salmon Stocks To Salmon Spawner Abundance: Marine Nutrients As Drivers Of Productivity, Philip J. Joy Aug 2019

The Response Of Juvenile Coho And Chinook Salmon Stocks To Salmon Spawner Abundance: Marine Nutrients As Drivers Of Productivity, Philip J. Joy

Fisheries

Resource subsidies from spawning Pacific salmon (Oncorhynchus spp.) in the form of marine-derived nutrients (MDN) benefit juvenile salmonids while they rear in fresh water, but it remains unclear if the abundance of spawners in a watershed affects the productivity of salmon stocks that rear in those riverine systems. This dissertation aimed to provide a better understanding of these dynamics by evaluating whether the response of juvenile salmon to MDN is sufficient to enhance overall stock productivity. In Chapter 1, I examined correlative relationships in the abundance of Pink (O. gorbuscha) and Coho (O. kisutch) salmon and simulated spawner-recruit dynamics to …

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Establishing And Testing Detection Methods For Anti-Icing And Deicing Chemicals Using Spectral Data, Gabriel Fulton Aug 2019

Establishing And Testing Detection Methods For Anti-Icing And Deicing Chemicals Using Spectral Data, Gabriel Fulton

Engineering

Snow and ice accumulation on pavement reduce roadway surface friction and consequently result in diminished vehicle maneuverability, slower travel speeds, reduced roadway capacity, and increased crash risk. Though the use of chlorides and other freeze-inhibiting substances have been shown to reduce these negative factors, methods to quantify and analyze snow and ice remediation methods as well as the imposed loss of material are needed to allow state and municipal agencies to better allocate winter maintenance resources and funding. The use and application of chlorides, sand, and their related mixtures have proven to be highly effective for controlling or removing the …

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Feeding Ecology Of Scaup Ducklings Across A Heterogeneous Boreal Wetland Landscape, Adam J. Dubour Aug 2019

Feeding Ecology Of Scaup Ducklings Across A Heterogeneous Boreal Wetland Landscape, Adam J. Dubour

Biological Sciences

Understanding how patterns of food resources influence the behavior and fitness of free-living animals is critical in predicting how changes to such resources might influence populations. The boreal region of North America is relatively undeveloped and contains abundant freshwater lakes and wetlands. These largely pristine and stable habitats harbor high densities of aquatic invertebrates, which are a critical food source for the numerous waterbird species that breed in the boreal. Invertebrates are of particular importance for the optimal growth and survival of waterbird chicks. However, observations of long-term change to boreal aquatic habitats and their invertebrate populations associated with a …

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Whale-Watching In Juneau, Ak: Assessing Potential Effects On Humpback Whales And Understanding Passenger Perceptions, Alicia Rinaldi Schuler Aug 2019

Whale-Watching In Juneau, Ak: Assessing Potential Effects On Humpback Whales And Understanding Passenger Perceptions, Alicia Rinaldi Schuler

Fisheries

The feeding grounds of the North Pacific humpback whale (Megaptera novaeangliae) in Juneau, Alaska have rapidly developed into a popular whale watch destination during the summer (May-September). The whale watch industry has tripled in size in the last 18 years, currently numbering approximately 65 vessels. The sustainability of this industry could be jeopardized if the health and dependability of the resource, the whales, is negatively affected by increasing vessel pressure. The aim of this project is to provide a holistic understanding of whale watch tourism in Juneau by assessing 1) humpback whale responses to whale-watching vessels and 2) passenger experiences …

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Plant Succession In The Arctic Brooks Range: Floristic Patterns From Alpine To Foothills, Along A Glacial Chronosequence And Elevation Gradient, Shawnee A. Kasanke Aug 2019

Plant Succession In The Arctic Brooks Range: Floristic Patterns From Alpine To Foothills, Along A Glacial Chronosequence And Elevation Gradient, Shawnee A. Kasanke

Biological Sciences

In the wake of rapid glacial retreat, alpine habitats in the Arctic are expanding as freshly exposed surfaces become vegetated. Many glaciers in alpine cirques have nearly disappeared, and little is known about the rate of colonization or pioneer communities that develop following deglaciation. Newly developed habitats may provide refugia for sensitive Arctic flora and fauna, especially in light of polar warming. To assess this process, vegetation communities developing on two recently deglaciated moraines in the Central Brooks Range were surveyed and compared with communities along a transect spanning both a glacial chronosequence (40-125,000 years since deglaciation) and an elevation …

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Demographics And Telomere Dynamics Of Hibernating Arctic Ground Squirrels (Urocitellus Parryii), Sara M. Wilbur Aug 2019

Demographics And Telomere Dynamics Of Hibernating Arctic Ground Squirrels (Urocitellus Parryii), Sara M. Wilbur

Biological Sciences

Aging is the complex process by which an organism loses functional integrity over time. Several measurable contributors to or components of the aging process have been identified, one of which is telomere length. Telomeres are the repetitive, nucleoprotein structures located at the ends of linear chromosomes. In general, telomeres shorten over time and when exposed to damaging reactive oxygen species (highly unstable molecules released as a byproduct of cellular respiration). Organisms that have unique physiologies, in addition to those that live longer than otherwise predicted, have recently inspired comparative telomere dynamics studies. Hibernating mammals, which exhibit both heterothermy and long …

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Dual-Power And Direct Democracy In Fiji: An Analysis Of The Itaukei Administration, Glenn Hall Aug 2019

Dual-Power And Direct Democracy In Fiji: An Analysis Of The Itaukei Administration, Glenn Hall

Capstone Collection

This paper examines the origins, history and social impact of the iTaukei (E-tow-kay) Administration in Fiji, which is an autonomous system of indigenous dual-power within the government of Fiji. It traces the history, social implications, and current status of the iTaukei Administration, focusing on (1) to what extend this administration has frustrated the advances of liberalism in the form of both nation-state and capitalism, and (2) if there is an alternative to the dichotomy of cultural, political, and economic domination of chiefly elites versus that of the global neoliberal hegemony. In this analysis, the origins of developmental discourse is examined, …

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Characterization Of Acute Tlr-7 Agonist-Induced Hemorrhagic Myocarditis In Mice By Multiparametric Quantitative Cardiac Magnetic Resonance Imaging., Nicoleta Baxan, Angelos Papanikolaou, Isabelle Salles-Crawley, Amrit Lota, Rasheda Chowdhury, Olivier Dubois, Jane Branca, Muneer G. Hasham, Nadia Rosenthal, Sanjay K Prasad, Lan Zhao, Sian E Harding, Susanne Sattler Aug 2019

Characterization Of Acute Tlr-7 Agonist-Induced Hemorrhagic Myocarditis In Mice By Multiparametric Quantitative Cardiac Magnetic Resonance Imaging., Nicoleta Baxan, Angelos Papanikolaou, Isabelle Salles-Crawley, Amrit Lota, Rasheda Chowdhury, Olivier Dubois, Jane Branca, Muneer G. Hasham, Nadia Rosenthal, Sanjay K Prasad, Lan Zhao, Sian E Harding, Susanne Sattler

Faculty Research 2019

Hemorrhagic myocarditis is a potentially fatal complication of excessive levels of systemic inflammation. It has been reported in viral infection, but is also possible in systemic autoimmunity. Epicutaneous treatment of mice with the Toll-like receptor 7 (TLR-7) agonist Resiquimod induces auto-antibodies and systemic tissue damage, including in the heart, and is used as an inducible mouse model of systemic lupus erythematosus (SLE). Here, we show that overactivation of the TLR-7 pathway of viral recognition by Resiquimod treatment of CFN mice induces severe thrombocytopenia and internal bleeding, which manifests most prominently as hemorrhagic myocarditis. We optimized a cardiac magnetic resonance (CMR) …

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Decoherence Of Open Systems Of Coupled Oscillators And Qubits, Kevin Randles, Jean-François S. Van Huele, Manuel Berrondo Aug 2019

Decoherence Of Open Systems Of Coupled Oscillators And Qubits, Kevin Randles, Jean-François S. Van Huele, Manuel Berrondo

Student Works

In this paper we develop a method of solving the dynamics of minimal open systems of coupled oscillators and qubits. Extracting the time-dependence of the system from its underlying Lie algebra of operators we find the time evolution operator, allowing us to explore the evolution of various initial states of the system and environment. For these initial states we find the linear entropy, a measure of decoherence of the system, and visualize the dynamics using Husimi functions and Bloch spheres for oscillator and qubit systems, respectively. We find that increasing the interaction of the system with its environment results in …

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Computed Tomography Shows High Fracture Prevalence Among Physically Active Forager-Horticulturalists With High Fertility, Jonathan Stieglitz, Benjamin C. Trumble, Horus Study Team, Caleb E. Finch, Dong Li, Matthew J. Budoff, Hillard Kaplan, Michael D. Gurven Aug 2019

Computed Tomography Shows High Fracture Prevalence Among Physically Active Forager-Horticulturalists With High Fertility, Jonathan Stieglitz, Benjamin C. Trumble, Horus Study Team, Caleb E. Finch, Dong Li, Matthew J. Budoff, Hillard Kaplan, Michael D. Gurven

ESI Publications

Modern humans have more fragile skeletons than other hominins, which may result from physical inactivity. Here, we test whether reproductive effort also compromises bone strength, by measuring using computed tomography thoracic vertebral bone mineral density (BMD) and fracture prevalence among physically active Tsimane forager-horticulturalists. Earlier onset of reproduction and shorter interbirth intervals are associated with reduced BMD for women. Tsimane BMD is lower versus Americans, but only for women, contrary to simple predictions relying on inactivity to explain skeletal fragility. Minimal BMD differences exist between Tsimane and American men, suggesting that systemic factors other than fertility (e.g. diet) do not …

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Microbial Mercury Methylation At Caddo Lake: A Molecular Ecology Approach, Nevada King Aug 2019

Microbial Mercury Methylation At Caddo Lake: A Molecular Ecology Approach, Nevada King

Biology Theses

Caddo Lake in northeastern Texas is a cypress-Spanish moss dominated lake ecosystem. Contamination of mercury (Hg), especially methylmercury (MeHg), was reported in this lake a decade ago. MeHg is a neurotoxicant accumulated in major fish species and reptiles. Due to the biomagnification feature of MeHg transfer, Hg contamination in the fishes of Caddo Lake has caused health concerns for the wildlife and local people. However, the source and synthesis of MeHg in this lake, primarily the microbial Hg methylation mechanisms, have not been investigated. We investigated the lake for the past three years (2016-2018), by taking sediment and plant samples …

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Integrated Marketing Communication Project For American Aerogel, Samary De La Cruz Rosado Aug 2019

Integrated Marketing Communication Project For American Aerogel, Samary De La Cruz Rosado

Theses

This project created a marketing plan for a specific company “American Aerogel” to increase sales and to penetrate Clinical Research Organizations; thus, the project considered the comprehensive integrated marketing communication in the company. A survey was used to determine whether the marketing strategy selected for the project—direct marketing email—would be beneficial for the company to help it increase brand awareness in the clinical research field. More specifically, emailing a marketing campaign to a specific target audience is likely to increase results. Therefore, data from 150 surveys about email marketing was collected and analyzed to determine the usefulness of email marketing …

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Comparative Transcriptomic Analysis And Structure Prediction Of Novel Newt Proteins, Abijeet Singh Mehta, Agustin Luz-Madrigal, Jian-Liang Li, Panagiotis A. Tsonis, Amit Singh Aug 2019

Comparative Transcriptomic Analysis And Structure Prediction Of Novel Newt Proteins, Abijeet Singh Mehta, Agustin Luz-Madrigal, Jian-Liang Li, Panagiotis A. Tsonis, Amit Singh

Biology Faculty Publications

Notophthalmus viridescens (Red-spotted Newt) possess amazing capabilities to regenerate their organs and other tissues. Previously, using a de novo assembly of the newt transcriptome combined with proteomic validation, our group identified a novel family of five protein members expressed in adult tissues during regeneration in Notophthalmus viridescens. The presence of a putative signal peptide suggests that all these proteins are secretory in nature. Here we employed iterative threading assembly refinement (I-TASSER) server to generate three-dimensional structure of these novel Newt proteins and predicted their function. Our data suggests that these proteins could act as ion transporters, and be involved …

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First Reported Case Of Diphallia In Corynorhinus Townsendii, Nathan W. Fuller, Catherine G. Haase, Kirk A. Silas, Sarah H. Olson, Liam P. Mcguire Aug 2019

First Reported Case Of Diphallia In Corynorhinus Townsendii, Nathan W. Fuller, Catherine G. Haase, Kirk A. Silas, Sarah H. Olson, Liam P. Mcguire

Western North American Naturalist

We describe the first reported case of diphallia in a bat, Corynorhinus townsendii, captured during fall swarming at a hibernaculum in northern Utah, USA. Upon examination, we determined that one phallus was functional, as evidenced by production of urine, while the secondary phallus appeared to be overgrown with skin. A review of the medical literature relevant to diphallia suggests that this is a case of pseudodiphallia with a bifid shaft. We hypothesize that this morphological deformity likely has a low impact on the survival of this individual but may act as a physical barrier to copulation. To our knowledge, this …

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Multiphase Cfd Modeling In Particle-Laden Flows, Zhizhong Ding Aug 2019

Multiphase Cfd Modeling In Particle-Laden Flows, Zhizhong Ding

LSU Doctoral Dissertations

Multiphase modeling is prevalent and useful in solving problems involving multiphase interactions such as fluid and solid. Applications conclude but not limited to fluidized bed, hydraulic conveying, and many others. Modeling techniques with multiple scales can provide various states of details with diverse computational resources used. In this dissertation, two CFD multiphase models are used to disclose interaction details in the particulate system. Two-Fluid Model is used to solve pulsed fluidized bed problem and immersed boundary method based direct numerical method is used to solve particle’s behavior in shear flow. Getting a better understanding of these problems to help to …

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Quantifying Spatiotemporal Impacts Of The Interaction Of Water Scarcity And Water Use By The Global Semiconductor Manufacturing Industry, Kali Frost, Inez Hua Aug 2019

Quantifying Spatiotemporal Impacts Of The Interaction Of Water Scarcity And Water Use By The Global Semiconductor Manufacturing Industry, Kali Frost, Inez Hua

Purdue University Libraries Open Access Publishing Fund

The high-tech semiconductor manufacturing sector is integral to the international electronics industry and was valued at over $400 billion USD in 2017. Intensive water use by this industry is well-documented and this work provides a spatially explicitly assessment of water use impacts by nearly 100% of global semiconductor manufacturing capacity. Both direct manufacturing water use and water use from electricity were considered as part of a facility’s total withdrawal. Manufacturing water withdrawals were estimated by using technology-specific water and electricity use data, reported at the semiconductor chip or wafer level from the life cycle literature and industry estimates. Electricity water …

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A Novel Eye Tracking Paradigm For Indexing Social Avoidance-Related Behavior In Fragile X Syndrome, Jessica Klusek, Carly Moser, Joseph Schmidt, Leonard Abbeduto, Jane E. Roberts Aug 2019

A Novel Eye Tracking Paradigm For Indexing Social Avoidance-Related Behavior In Fragile X Syndrome, Jessica Klusek, Carly Moser, Joseph Schmidt, Leonard Abbeduto, Jane E. Roberts

Faculty Publications

Fragile X syndrome (FXS) is characterized by hallmark features of gaze avoidance, reduced social approach, and social anxiety. The development of therapeutics to manage these symptoms has been hindered, in part, by the lack of sensitive outcome measures. This study investigated the utility of a novel eye tracking paradigm for indexing social avoidance-related phenotypes. Adolescent/young adult-aged males with FXS (n=24) and typical development (n=23) participated in the study. Participants viewed faces displaying direct or averted gaze and the first fixation duration on the eyes was recorded as an index of initial stimulus registration. Fixation durations did …

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N-Glycosylation-Defective Splice Variants Of Neuropilin-1 Promote Metastasis By Activating Endosomal Signals, Xiuping Huang, Qing Ye, Min Chen, Aimin Li, Wenting Mi, Yuxin Fang, Yekaterina Y. Zaytseva, Kathleen L. O'Connor, Craig W. Vander Kooi, Side Liu, Qing-Bai She Aug 2019

N-Glycosylation-Defective Splice Variants Of Neuropilin-1 Promote Metastasis By Activating Endosomal Signals, Xiuping Huang, Qing Ye, Min Chen, Aimin Li, Wenting Mi, Yuxin Fang, Yekaterina Y. Zaytseva, Kathleen L. O'Connor, Craig W. Vander Kooi, Side Liu, Qing-Bai She

Markey Cancer Center Faculty Publications

Neuropilin-1 (NRP1) is an essential transmembrane receptor with a variety of cellular functions. Here, we identify two human NRP1 splice variants resulting from the skipping of exon 4 and 5, respectively, in colorectal cancer (CRC). Both NRP1 variants exhibit increased endocytosis/recycling activity and decreased levels of degradation, leading to accumulation on endosomes. This increased endocytic trafficking of the two NRP1 variants, upon HGF stimulation, is due to loss of N-glycosylation at the Asn150 or Asn261 site, respectively. Moreover, these NRP1 variants enhance interactions with the Met and β1-integrin receptors, resulting in Met/β1-integrin co-internalization and co-accumulation on endosomes. This provides persistent …

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Emergent Behavior Development And Control In Multi-Agent Systems, David W. King Aug 2019

Emergent Behavior Development And Control In Multi-Agent Systems, David W. King

Theses and Dissertations

Emergence in natural systems is the development of complex behaviors that result from the aggregation of simple agent-to-agent and agent-to-environment interactions. Emergence research intersects with many disciplines such as physics, biology, and ecology and provides a theoretical framework for investigating how order appears to spontaneously arise in complex adaptive systems. In biological systems, emergent behaviors allow simple agents to collectively accomplish multiple tasks in highly dynamic environments; ensuring system survival. These systems all display similar properties: self-organized hierarchies, robustness, adaptability, and decentralized task execution. However, current algorithmic approaches merely present theoretical models without showing how these models actually create hierarchical, …

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Ed Stories: An Online Emergency Medicine Residency Community Building And Wellness Initiative., Geoffrey B Comp, Meenal Sharkey Aug 2019

Ed Stories: An Online Emergency Medicine Residency Community Building And Wellness Initiative., Geoffrey B Comp, Meenal Sharkey

Medical Education Articles

The "ED Stories" project is a novel method for promoting individual wellness and interpersonal relationships on a virtual platform in an emergency medicine residency program. We engaged multiple individuals across all levels of medical training on a virtual platform to facilitate discussion regarding difficult situations, patient interactions, and tips on how to succeed in challenge circumstances in the future. The platform was outlined as a "safe space," free of judgment and criticism. We engaged 54 participants with a culmination of 131 interactions; there were 14 original posts with a total of 22 comments. We believe that this virtual platform allowed …

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"All Things To All Men": The Life And Work Of Monsignor Thomas J. Tobin, Priest Of The Archdiocese Of Portland In Oregon, Samuel Richard Mertz Aug 2019

"All Things To All Men": The Life And Work Of Monsignor Thomas J. Tobin, Priest Of The Archdiocese Of Portland In Oregon, Samuel Richard Mertz

Dissertations and Theses

This thesis is a biographical study of the life and work of Monsignor Thomas J. Tobin, a priest of the Archdiocese of Portland in Oregon. It covers his leadership in the labor movement during World War II, his participation in the Liturgical Movement, and his efforts to bring the Catholic Church in Oregon into ecumenical dialogue with other Christians. It culminates in his involvement in the Second Vatican Council. His activism can only be truly understood within the context of Oregon's vibrant progressive movement, a movement that carried disproportionate influence in a state that was in many ways politically conservative …

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Changing The Record: Narrative Policy Analysis And The Politics Of Emissions Trading In New Zealand, Ian Bailey, Inderberg Th Jackson Aug 2019

Changing The Record: Narrative Policy Analysis And The Politics Of Emissions Trading In New Zealand, Ian Bailey, Inderberg Th Jackson

School of Geography, Earth and Environmental Sciences

No abstract provided.

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"I Don't Want To Be Ashamed, I Want To Learn About My History": Racial Isolation In Portland’S White Schools, Rae R. Stevenson Aug 2019

"I Don't Want To Be Ashamed, I Want To Learn About My History": Racial Isolation In Portland’S White Schools, Rae R. Stevenson

PSU McNair Scholars Online Journal

Students of color in predominantly white school systems face significant challenges in their path to positive racial identity development due to racial isolation. Their journeys through the education system are impacted by a lack of same-race peers and educators, and the challenges they face are amplified by neighborhoods that are equally devoid of same-race community members. This paper explores the experiences of self-identified members of the African diaspora in predominantly white schools in Portland, Oregon. Their stories were collected through semi-structured qualitative interviews. Analysis is informed by critical, feminist and constructivist perspectives, and utilizes a narrative approach. The experiences shared …

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Alumni Spotlight: Emily Erickson Aug 2019

Alumni Spotlight: Emily Erickson

The Journal of Purdue Undergraduate Research

Emily Erickson published an article in volume 4 (2014) of the Journal of Purdue Undergraduate Research during her time spent completing her baccalaureate degree.

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Ticked Off: How Expansion Of City Boundaries Affects Rates Of Lyme Disease In The United States, Daphne Fauber Aug 2019

Ticked Off: How Expansion Of City Boundaries Affects Rates Of Lyme Disease In The United States, Daphne Fauber

The Journal of Purdue Undergraduate Research

No abstract provided.

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Psychiatric Service Dogs: Use And Value For Military Veterans With Ptsd, Catherine Ephlin Aug 2019

Psychiatric Service Dogs: Use And Value For Military Veterans With Ptsd, Catherine Ephlin

The Journal of Purdue Undergraduate Research

No abstract provided.

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The Dehumanization Of Immigrants And Refugees: A Comparison Of Dehumanizing Rhetoric By All Candidates In Three U.S. Presidential Elections, Amanda Warnock Aug 2019

The Dehumanization Of Immigrants And Refugees: A Comparison Of Dehumanizing Rhetoric By All Candidates In Three U.S. Presidential Elections, Amanda Warnock

The Journal of Purdue Undergraduate Research

dehumanization theory by tracking and comparing dehumanizing rhetoric used by all presidential candidates during the 2008, 2012, and 2016 campaigns. Using data hand-collected from all presidential speeches conducted during these periods, including accounting for ad-libbing by Donald Trump, I find that Trump was distinctive in his dehumanization of immigrants and refugees, far surpassing all other candidates. His language surrounding these groups focused heavily on (1) using nonhuman language to describe their actions and migrations, (2) assigning criminality and viciousness to immigrants, (3) repeating stories of the deaths of American citizens by immigrants, (4) saying that immigrants and refugees have values …

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Nanomaterial-Agrichemical Interactions: Association Of Environmental Herbicides With Two-Dimensional Graphene Nanoplatelets, Nudar A. Bhuiya Aug 2019

Nanomaterial-Agrichemical Interactions: Association Of Environmental Herbicides With Two-Dimensional Graphene Nanoplatelets, Nudar A. Bhuiya

The Journal of Purdue Undergraduate Research

Atrazine and glyphosate are the two most common agricultural herbicides used in the United States. Both herbicides can move in the environment, which results in contamination of drinking water sources. Graphene nanoplatelets (GNPs) are an emerging nanoparticle with potential uses for the remediation of environmental contamination. The first aim of this study was to determine binding interactions between atrazine and GNPs to mimic a mixture composition. To determine binding interactions, GNPs with different functional groups (none, carboxylated, or aminylated) were evaluated. GNPs at concentrations of 0, 0.5, 1, 2, or 3 mg/ml were incubated with atrazine at 3 ppb (μg/L) …

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Eng 1001g-248: College Composition I Dual Credit, Christine Pacyk Aug 2019

Eng 1001g-248: College Composition I Dual Credit, Christine Pacyk

Fall 2019

No abstract provided.

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Eng 1001g-249: College Composition I Dual Credit, Meredith Silverman Aug 2019

Eng 1001g-249: College Composition I Dual Credit, Meredith Silverman

Fall 2019

No abstract provided.

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