Matching Items (1,259)
Filtering by
- Creators: School of International Letters and Cultures
- Creators: Dean, W.P. Carey School of Business
- Member of: Barrett, The Honors College Thesis/Creative Project Collection
- Resource Type: Text
Description
Terrestrial crude oil spills compromise a soil’s ability to provide ecosystem services by inhibiting plant life and threatening groundwater integrity. Ozone gas, a powerful oxidant, shows promise to aid in soil recovery by degrading petroleum hydrocarbons into more bioavailable and biodegradable chemicals. However, previous research has shown that ozone can change the soil pH and create harmful organic compounds.
The research objective was to determine the short-term ecological toxicity of ozonation byproducts on seed germination of three distinct plant types (radish, lettuce, and grass) compared to untreated and uncontaminated soils. We hypothesize that the reduction of heavy hydrocarbon contamination in soil by ozone application will provide more suitable habitat for the germinating seeds. The effect of ozone treatment on seed germination and seedling quality was measured using ASTM standards for early seedling growth in conjunction with a gradient of potting soil amendments. Ozonation parameters were measured using established methods and include total petroleum hydrocarbons (TPH), dissolved organic carbon (DOC), and pH.
This study demonstrated the TPH levels fall up to 22% with ozonation, suggesting TPH removal is related to the amount of ozone delivered as opposed to the type of crude oil present. The DOC values increase comparably across crude oil types as the ozonation dose increases (from a background level of 0.25 g to 6.2 g/kg dry soil at the highest ozone level), suggesting that DOC production is directly related to the amount of ozone, not crude oil type. While ozonation reduced the mass of heavy hydrocarbons in the soil, it increased the amount of ozonation byproducts in the soil. For the three types of seeds used in the study, these changes in concentrations of TPH and DOC affected the species differently; however, no seed type showed improved germination after ozone treatment. Thus, ozone treatment by itself had a negative impact on germination potential.
Future research should focus on the effects of post-ozonation, long-term bioremediation on eco-toxicity. By helping define the eco-toxicity of ozonation techniques, this research can improve upon previously established ozone techniques for petroleum remediation and provide economic and environmental benefits when used for soil treatment.
The research objective was to determine the short-term ecological toxicity of ozonation byproducts on seed germination of three distinct plant types (radish, lettuce, and grass) compared to untreated and uncontaminated soils. We hypothesize that the reduction of heavy hydrocarbon contamination in soil by ozone application will provide more suitable habitat for the germinating seeds. The effect of ozone treatment on seed germination and seedling quality was measured using ASTM standards for early seedling growth in conjunction with a gradient of potting soil amendments. Ozonation parameters were measured using established methods and include total petroleum hydrocarbons (TPH), dissolved organic carbon (DOC), and pH.
This study demonstrated the TPH levels fall up to 22% with ozonation, suggesting TPH removal is related to the amount of ozone delivered as opposed to the type of crude oil present. The DOC values increase comparably across crude oil types as the ozonation dose increases (from a background level of 0.25 g to 6.2 g/kg dry soil at the highest ozone level), suggesting that DOC production is directly related to the amount of ozone, not crude oil type. While ozonation reduced the mass of heavy hydrocarbons in the soil, it increased the amount of ozonation byproducts in the soil. For the three types of seeds used in the study, these changes in concentrations of TPH and DOC affected the species differently; however, no seed type showed improved germination after ozone treatment. Thus, ozone treatment by itself had a negative impact on germination potential.
Future research should focus on the effects of post-ozonation, long-term bioremediation on eco-toxicity. By helping define the eco-toxicity of ozonation techniques, this research can improve upon previously established ozone techniques for petroleum remediation and provide economic and environmental benefits when used for soil treatment.
ContributorsJanuszewski, Brielle (Author) / Rittmann, Bruce (Thesis director) / Yavuz, Burcu (Committee member) / Civil, Environmental and Sustainable Eng Program (Contributor) / School of International Letters and Cultures (Contributor) / School of Politics and Global Studies (Contributor, Contributor) / School of Life Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
There are currently no disease-modifying treatments to halt or attenuate the progression of Alzheimer’s disease (AD). Transgenic rodent models have provided researchers the ability to recapitulate particular pathological and symptomological events in disease progression. Complete reproduction of all features of AD in a rodent model has not been achieved, potentially lending to the inconclusive treatment results at the clinical level. Recently, the TgF344-AD transgenic rat model has started to be evaluated; however, it has not been well characterized in terms of its cognition, which is fundamental to understanding the trajectory of aging relative to pathology and learning and memory changes. Therefore, the aim of the current study was to identify cognitive outcomes at 6, 9, and 12 months of age in the TgF344-AD rat model. Sixty female transgenic (Tg) and wildtype (WT) rats were tested on the water radial arm maze, Morris water maze, and visible platform task to evaluate cognition. Results from the asymptotic phase of the water radial arm maze showed that the 6 mo-Tg animals had marginally impaired working memory compared to 6 mo-WT rats, and 12 mo-Tg rats had significantly impaired working memory compared to 12 mo-WT rats. The 9 mo-Tg animals did not demonstrate a significant difference in working memory errors compared to the 9 mo-WT animals. This pattern of impairment, wherein Tg animals made more working memory errors compared to WT animals at the 6 and 12 month time points, but not at the 9 month time point, may be indicative of an inflammatory response that proves helpful at incipient stages of disease progression but eventually leads to further cognitive impairment. These results provide insight into the potential earliest time point that prodromal cognitive symptoms of AD exist, and how they progress with aging. Brain tissue was collected at sacrifice for future analyses of pathology, which will be used to glean insight into the temporal progression of pathological and cognitive outcomes.
ContributorsBulen, Haidyn Leigh (Co-author) / Bulen, Haidyn (Co-author) / Bimonte-Nelson, Heather (Thesis director) / Presson, Clark (Committee member) / Conrad, Cheryl (Committee member) / Woner, Victoria (Committee member) / Peña, Veronica (Committee member) / School of International Letters and Cultures (Contributor) / Department of Psychology (Contributor) / School of Life Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
This project draws sustainability material out of the textbook and into the body using a
role play simulation modeled around Michigan wolf management. In this case, role play simulation is a game fabricated to reflect the complexity of real-world conflict. The goal of the exercise is to engage players in mock negotiation and expand their knowledge of wicked environmental problems. By encouraging participants to question their own thought process, the activity aims to foster a transformational experience.
role play simulation modeled around Michigan wolf management. In this case, role play simulation is a game fabricated to reflect the complexity of real-world conflict. The goal of the exercise is to engage players in mock negotiation and expand their knowledge of wicked environmental problems. By encouraging participants to question their own thought process, the activity aims to foster a transformational experience.
ContributorsVermeer, Danielle Nicole (Author) / Cloutier, Scott (Thesis director) / Movahed, Neda (Committee member) / School of Geographical Sciences and Urban Planning (Contributor) / School of Sustainability (Contributor) / School of International Letters and Cultures (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
Inclusion of diverse talent in the field of public accounting has been highly prioritized by the profession since the late 1960s. In seeking to acquire racially/ethnically diverse talent in addition to an expanding set of identities (e.g. veterans, people with disabilities, LGTBQ+, and various backgrounds contributing to “diversity of thought”), Big Four Public Accounting firms have taken on more operational ownership of their Diversity and Inclusion programming. We conducted interviews with D&I program facilitators and surveyed Accounting and Finance students at Arizona State University to assess whether these programs align with students’ outlooks and are being properly presented to enhance awareness. The uniformity across the Big Four’s D&I program structures, the persistence in competition among them in relation to talent acquisition and retention, and students’ lack of awareness relating to program timing and existence lead us to conclude that efforts in improving diversity and inclusion in Big Four Public Accounting are most effective when the Big Four act collectively
ContributorsAlaniz, Leslie M (Co-author) / Quintana, Jacob (Co-author) / Samuels, Janet (Thesis director) / Dawson, Gregory (Committee member) / School of International Letters and Cultures (Contributor) / School of Accountancy (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
Cerebral lateralization describes the asymmetries between the two halves of the brain which results in side-specialized processing of certain functions. This phenomenon provides a selective advantage by promoting enhanced cognitive abilities. However, due to the plastic nature of lateralization, an individual’s lateralization is highly subject to change by many external factors, such as pollution, throughout its life. Additionally, lateralized regions are dependent on different contexts, so lateralized elements do not all experience the same effects. A common pollutant found worldwide is bisphenol-A (BPA), a critical component of many plastics. BPA is a known endocrine disruptor that can agonize and antagonize the functions of sex steroids. Other studies have demonstrated the importance of sex steroids in regulating the development of cerebral lateralization; BPA may similarly affect lateralization. A popular research animal for studying toxicology is the zebrafish. Its advantages include a fully sequenced genome, many human orthologs, and more importantly, expresses lateralized behaviors that are indicative of the strength of its cerebral lateralization. This experiment analyzed the effects of BPA exposure on visual lateralization of zebrafish. Given the role that sex steroids play in moderating lateralization, it was hypothesized that exposing zebrafish to BPA would diminish the strength of lateralization in the brain which would translate into reduced behavioral lateralization. To test this, one group was exposed to 0.01 mg/L BPA for one week and compared against a control group in their eye preference when approaching a visual cue. Two settings, a foraging context and a social context, were utilized to examine the scope of impairment in lateralization. The control group in both settings displayed similar strengths in behavioral lateralization with a left eye preference. However, the lateralized response faded completely with BPA treatment. This experiment demonstrates that BPA induces loss of lateralization and possesses similar impacts on mechanisms controlling investigatory behavior in these two contexts. Wild populations may encounter higher concentrations of BPA, and although there is greater variability in these exposures, this experiment proves that exposure even beyond critical periods of development can impair lateralization. Additional research will have to be conducted to identify the effects of BPA on other lateralized behaviors and sensory modalities to pinpoint the exact mechanisms through which BPA influences lateralization.
ContributorsHuang, Alexander (Author) / Martins, Emilia (Thesis director) / Suriyampola, Piyumika (Committee member) / Conroy-Ben, Otakuye (Committee member) / School of Life Sciences (Contributor) / School of Molecular Sciences (Contributor) / Dean, W.P. Carey School of Business (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
This paper intends to parse out the differences between various types of nationalism. It will break down the current trend toward xenophobic rhetoric in modern democratic election campaigns. Then, it will discuss the effect of modern media coverage in the dissemination and sustenance of toxic nationalist rhetoric and cover the role of President Donald J. Trump in doing the same. Finally, it will outline what appears to be the root cause of this current uptick in toxic nationalism and recommend some methods by which the issue can be resolved in the current political atmosphere.
ContributorsMcCreary, Micah (Author) / Goggin, Maureen (Thesis director) / Chanley, Jesse (Committee member) / School of International Letters and Cultures (Contributor) / Department of English (Contributor) / School of Politics and Global Studies (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
This paper investigates whether incarceration has an effect on political orientation, addressing the hypothesis that the experience of incarceration also shapes the political behavior and attitudes of those who have been confined (Manza, Uggen 2006; Clear 2007; Travis 2005). The primary aim of the research is to identify what role, if at all, the penal system plays in how incarcerated individuals think about politics. The data relied on to reach conclusions about the incarcerated population derives from voluntary responses to a survey implemented within a company that hires formerly and currently incarcerated persons. I find that the majority of the sample I surveyed became more politically liberal as a result of incarceration and a vast majority want to participate in the political process. These findings corroborate my hypotheses regarding the effects of incarceration on political beliefs, but contradict my assumption regarding the effect of social capital on their desire to participate in politics.
ContributorsFrederickson, Nicola B (Author) / Rigoni, Adam (Thesis director) / Forst, Bradley (Committee member) / Dean, W.P. Carey School of Business (Contributor) / School of Politics and Global Studies (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
Genistein, a compound found in soy that functions as a phytoestrogen, has been found to play a role in the body’s inflammatory response. By suppressing the expression of inflammatory genes and inhibiting tumor cell growth, genistein is thought to have both anti-inflammatory and cancer fighting properties. This study seeks to demonstrate genistein’s potential to mitigate the negative consequences of consuming a high fat diet specifically as it relates to increased inflammation and changes in the gut microbiome. Using an animal model, the study tested whether supplementing the mice’s diet with soy derived genistein would affect their serum IL-6 levels and the way in which their gut microbiomes responded to their high fat consumption. It was presumed that genistein supplementation would result in a less significant shift from the biomarkers tested in the control group and reduce the impact of the high fat diet. It was also hypothesized that consumption of the high fat diet would raise IL-6 levels and increase the presence of harmful bacteria in the test subjects.
ContributorsPettit, Gabrielle Sofia (Author) / Whisner, Dr. Corrie (Thesis director) / Al-Nakkash, Dr. Layla (Committee member) / Ortega Santos, Carmen (Committee member) / Dean, W.P. Carey School of Business (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
Sports have always incited an emotional response in fans unlike anything else and creates a special relationship between fans and their favorite sports team. However, in the current age, attendance numbers have started to fall, due to games being available on multiple platforms for viewers to watch in their own homes, along with the increased competition in the entertainment industry. Teams are seeking new ways to leverage that relationship with their fans in order to draw fans into their games. This study will look at the history of fandom and reasons why people remain loyal to “their team” year after year. In turn, fan loyalty and increased attendance translates to increased revenue for teams across all sports. As part of this study, existing literature was reviewed covering the following areas of fandom: fan loyalty, memory association, and team actions that will impact fans. This research will aid in developing hypotheses to test on why fans remain fans and how their fan dedication develops. A questionnaire was then developed to find the reason why a fan is so dedicated to their favorite team. Respondents are asked to self- identify as a fan type in order to quantify the label of “fan” and build a deeper analysis within the questions being asked. The three fan options are diehard, casual and social fans. The following analysis explored why people are fans and what factors influence their level of fan loyalty. From that, recommendations were developed for professional sports teams to take advantage of the factors found in the analysis. The hope is that they will be able to translate psychological factors and an emotional connection into a concrete strategy to drive ticket sales and revenue.
ContributorsTassinari, Isabella (Author) / McIntosh, Daniel (Thesis director) / Eaton, John (Committee member) / Department of Information Systems (Contributor) / Dean, W.P. Carey School of Business (Contributor) / Department of Marketing (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
Personality is a relevant and applicable research topic now more than ever; because of the Internet, self-report measures of personality are becoming increasingly accessible. Although now widely available for personal application, personality inventories are not often examined in the context of their associations with other factors. Specifically, there exists a gap in the research on personality and its associations with philosophical belief. Based on a sample of 88 individuals, correlations between the Big Five and Philosophy Dichotomy Test were examined in order to investigate the associations between personality traits and philosophical belief. Agreeableness was found to be negatively associated with the sensuality, values, metaphysical, and societal axes, corresponding to higher levels of hedonism, rationalism, materialism, and egoism. These findings suggest that personality as measured by the Big Five and philosophical belief are somewhat associated. Limitations and future directions are presented.
ContributorsFitzgerald, Clare (Author) / Randall, Ashley K. (Thesis director) / Iida, Masumi (Committee member) / School of International Letters and Cultures (Contributor) / Department of Psychology (Contributor) / School of Molecular Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05