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Description
This report analyzes the potential for accumulation of boron in direct potable reuse. Direct potable reuse treats water through desalination processes such as reverse osmosis or nanofiltration which can achieve rejection rates of salts sometimes above 90%. However, boron achieves much lower rejection rates near 40%. Because of this low rejection rate, there is potential for boron to accumulate in the system to levels that are not recommended for potable human consumption of water. To analyze this issue a code was created that runs a steady state system that tracks the internal concentration, permeate concentration, wastewater concentration and reject concentration at various rejection rates, as well as all the flows. A series of flow and mass balances were performed through five different control volumes that denoted different stages in the water use. First was mixing of clean water with permeate; second, consumptive uses; third, addition of contaminant; fourth, wastewater treatment; fifth, advanced water treatments. The system cycled through each of these a number of times until steady state was reached. Utilities or cities considering employing direct potable reuse could utilize this model by estimating their consumption levels and input of contamination, and then seeing what percent rejection or inflow of makeup water they would need to obtain to keep boron levels at a low enough concentration to be fit for consumption. This code also provides options for analyzing spikes and recovery in the system due to spills, and evaporative uses such as cooling towers and their impact on the system.
ContributorsDoidge, Sydney (Author) / Fox, Peter (Thesis director) / Perreault, Francois (Committee member) / Civil, Environmental and Sustainable Engineering Program (Contributor) / School of International Letters and Cultures (Contributor) / Barrett, The Honors College (Contributor)
Created2017-12
Description
Over the past three decades, medical anthropology research, published within both public health and anthropological journals, demonstrates both the prevalence of traditional folk medicine in Latino populations in the United States and the potential difficulty of negotiating these beliefs and practices with clinical, western biomedicine. I bring attention to what might be a narrative of divergent values that occurs in Latino communities in the United States. A well-documented source (Pachter, 1994) of this clash is the culturally pervasive use of folk medicine in Latino layperson populations seeking biomedical care in the Unites States (U.S.). Numerous studies (Padilla, 2001; Koss 1972) suggest that a significant portion of Latinos in the continental United States call upon folk knowledge to diagnose, reinterpret, and treat illness. The Puerto Rican population seems to be no exception, though few studies are specific to native-born Puerto Ricans living in Puerto Rico, where the issue of access to quality public health care becomes increasingly problematic. In this honors undergraduate thesis project, I conduct a review of the literature that bridges anthropology and public health research and proceed to describe a study I conducted on Culebra Island, Puerto Rico in May of 2015. The study aims to determine whether patient satisfaction can be linked to being treated by a physician hailing from a similar cultural background, or if an irredeemable disparity between patient and provider present a roadblock to health outcomes. I found that the Puerto Rican physicians are receptive to folk illness (symptoms) and consider folk therapy as part of the treatment regimen. The physicians make patients feel understood, which might improve treatment adherence and thus health outcomes. Still, respondents demonstrated that there is high patient trust in the biomedical model by emphasizing the use of conventional medications in tandem with the folk therapy. Nevertheless, the health care provider's disposition in regards to folk knowledge and modalities are important but does not present a roadblock to optimal care and health outcomes as much as access, available services or clinic resources.
ContributorsVanasse-Torres, Elena Georgina (Author) / Maupin, Jonathan (Thesis director) / Maienschein, Jane (Thesis director) / MartÃÂnez, AirÃÂn (Committee member) / School of Life Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2016-05
Description
In this study, the packaging and labeling of milk and coffee was compared between Walmart and Sprouts. The pricing, the sourcing, the certifications and the overall shelf presence of the items was taken under consideration. After studying the packaging of both, a new design incorporating the applicable labels, customer appeal and appropriate green marketing was created for both the commodities.
ContributorsBhatt, Rashi Hitesh (Author) / Collins, Shari (Thesis director) / Keahey, Jennifer (Committee member) / School of International Letters and Cultures (Contributor) / School of Earth and Space Exploration (Contributor) / School of Sustainability (Contributor) / Barrett, The Honors College (Contributor)
Created2016-05
Description
Twilight Sleep was a technique originally developed by physicians in Germany in the early 20th century as a novel way to address parturient women’s fear and aversion to pain endured during labor and childbirth. Using a combination of amnestic and analgesic agents such as scopolamine and morphine to synergistically suppress pregnant women’s memories, physicians Carl Gauss and Bernhard Krönig enabled women to give birth free of pain, or more accurately any memories of pain.
Despite widespread use throughout Europe, Twilight Sleep initially experienced less popularity and more resistance in the United States where doctors were wary of the potential health risks that Twilight Sleep brought upon women and infants. Some adverse effects caused by incorrect doses of scopolamine and morphine included hallucinations and uncontrolled thrashing in women and depressed respiration in infants. Thus, Twilight Sleep’s status as a vogue topic in obstetrics during the first half of the 20th century came about due to the work of affluent and educated American women. While lacking formal medical training, a subset of women became experts in the matter of Twilight Sleep by traveling to Germany to experience and investigate Twilight Sleep firsthand then disseminating their findings through published books and articles.
This thesis explores the impact of Twilight Sleep on women and physicians and their perceptions of childbirth. Twilight Sleep empowered women to take on a more active role in shaping the medical care they received rather than accepting that childbirth as a natural event associated with physical and mental trauma and high risk of mortality. For doctors, the debate regarding Twilight Sleep’s safety and efficacy affirmed a ubiquitous notion that childbirth ought to be seen as a pathological rather than natural event. By considering childbirth a medical condition that necessitated treatment, physicians had to evaluate their duties to their patients. In empowering women to be involved in making medical decisions and forcing physicians to balance their medical training with their patients’ needs, Twilight Sleep helped to establishing more reciprocal doctor-patient relationships.
Despite widespread use throughout Europe, Twilight Sleep initially experienced less popularity and more resistance in the United States where doctors were wary of the potential health risks that Twilight Sleep brought upon women and infants. Some adverse effects caused by incorrect doses of scopolamine and morphine included hallucinations and uncontrolled thrashing in women and depressed respiration in infants. Thus, Twilight Sleep’s status as a vogue topic in obstetrics during the first half of the 20th century came about due to the work of affluent and educated American women. While lacking formal medical training, a subset of women became experts in the matter of Twilight Sleep by traveling to Germany to experience and investigate Twilight Sleep firsthand then disseminating their findings through published books and articles.
This thesis explores the impact of Twilight Sleep on women and physicians and their perceptions of childbirth. Twilight Sleep empowered women to take on a more active role in shaping the medical care they received rather than accepting that childbirth as a natural event associated with physical and mental trauma and high risk of mortality. For doctors, the debate regarding Twilight Sleep’s safety and efficacy affirmed a ubiquitous notion that childbirth ought to be seen as a pathological rather than natural event. By considering childbirth a medical condition that necessitated treatment, physicians had to evaluate their duties to their patients. In empowering women to be involved in making medical decisions and forcing physicians to balance their medical training with their patients’ needs, Twilight Sleep helped to establishing more reciprocal doctor-patient relationships.
ContributorsTran, Yvette Ho (Author) / Maienschein, Jane (Thesis director) / Hurlbut, Ben (Committee member) / O'Neil, Erica (Committee member) / School of Life Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2016-05
Description
ASU's international student population has been growing exponentially in the last few years. Specifically, the fastest growing group has been international students from China. However, many of these students are arriving with inaccurate expectations of life at an American university. Furthermore, prospective students in China that have a desire to attend school in the U.S. are struggling to find a university that is affordable and respected. There is a huge opportunity for ASU to reach this market of students and increase their enrollment of international Chinese students. Our project aimed to create advertisements of ASU that target international Chinese students and their parents. The purpose of our project is to provide inspiration that ASU can utilize to create a professional marketing campaign to target this population of potential students.
ContributorsKagiyama, Kristen (Co-author) / Le, Alethea (Co-author) / Chien, Hsui Fen (Thesis director) / Chau, Angie (Committee member) / W. P. Carey School of Business (Contributor) / Department of Marketing (Contributor) / Department of Supply Chain Management (Contributor) / School of International Letters and Cultures (Contributor) / School of Sustainability (Contributor) / Barrett, The Honors College (Contributor)
Created2016-05
Description
Nitrous oxide (N2O) is a major contributor to the greenhouse effect and to stratospheric ozone depletion. In soils, nitrogen reduction is performed by biotic and abiotic processes, including microbial denitrification and chemical denitrification. Chemical denitrification, or chemodenitrification, is the abiotic step-wise reduction of nitrate (NO3-), nitrite (NO2-), or nitric oxide (NO) to N2O in anoxic environments, with high turnover rates particularly in acidic soils. Chemodenitrification was identified in various environments, but the mechanism is still not understood. In this study, the factors influencing abiotic reduction of NO2- to N2O in acidic tropical peat soil are examined. These factors include pH, organic matter content, and dissolved ferrous iron. Anoxic peat soil from sites located in the Peruvian Amazon was used for incubations. The results show that peat soil (pH ~4.5) appears to reduce NO2- more quickly in the presence of lower pH and higher Fe(II) concentrations. NO2- is completely reduced in excess Fe(II), and Fe(II) is completely oxidized in excess NO2-, providing evidence for the proposed mechanism of chemodenitrification. In addition, first order reaction rate constants kFe(II) and kNO2- were calculated using concentration measurements over 4 hours, to test for the hypothesized reaction rate relationships kFe(II): kFe(II) kFe(II)~NO2- > kFe(II)>NO2- and kNO2-: kFe(II)NO2-. The NO2- k values followed the anticipated pattern, although the Fe(II) k value data was inconclusive. Organic material may also play a role in NO2- reduction through chemodenitrification, and future experimentation will test this possibility. How and to what extent the pH and the concentrations of organic matter and Fe(II) affect the kinetic rate of chemodenitrification will lend insight into the N2O production potential of natural tropical peatlands.
ContributorsTylor, Kaitlyn Marie (Author) / Cadillo-Quiroz, Hinsby (Thesis director) / Day, Thomas (Committee member) / School of Life Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2016-05
Description
Since Dylan Roof, a white supremacist, shot and killed nine members of a black church in Charleston on June 17, 2015, Confederate symbols have stood at the center of much controversy across the United States. Although the Confederate battle flag remains the most obvious example, the debate took a particular form in Tennessee, centering on the image of General Nathan Bedford Forrest. Born in 1822 to a poor family, he left school early to work. Although his work in the slave trade made him a millionaire, his later participation in the massacre of over 300 black soldiers at Fort Pillow in 1864 during the Civil War and association with the Ku Klux Klan cemented his reputation as a violent racist. Yet, many white Tennesseans praised him as a hero and memorialized him. This thesis examines Nathan Bedford Forrest State Park in Benton County and Forrest Park, now Health Sciences Park, in Memphis to examine what characteristics denote a controversial memorial. Specifically, I focus on the physical form, the location, and the demographics of the area, investigating how these components work together to give rise to controversy or acceptance of the memorial's image. Physical representations greatly impact the ideas associated with the memorial while racial demographics affect whether or not Forrest's representation as a hero speaks true to modern interpretations and opinions.
ContributorsFish, Caroline Rose (Author) / Longley, Rodney (Thesis director) / Suk, Mina (Committee member) / School of Historical, Philosophical and Religious Studies (Contributor) / School of Politics and Global Studies (Contributor) / School of International Letters and Cultures (Contributor) / Barrett, The Honors College (Contributor)
Created2016-05
Description
Triops (Branchiopoda: Notostraca) and Streptocephalus (Branchiopoda: Anostraca) are two crustaceans which cohabitate in ephemeral freshwater pools. They both lay desiccation resistant eggs that disperse passively to new hydrologically isolated environments. The extent of genetic distance among regions and populations is of perennial interest in animals that live in such isolated habitats. Populations in six natural ephemeral pool habitats located in two different regions of the Sonoran Desert and a transition area between the Sonoran and Chihuahuan Deserts were sampled. Sequences from Genbank were used for reference points in the determination of species as well as to further identify regional genetic distance within species. This study estimated the amount of within and between genetic distance of individuals from each region and population through the use of a neutral marker, cytochrome oxidase I (COI). We concluded that, although the method of passive dispersal may differ between the two genera, the differences do not results in different patterns of genetic distances between regions and populations. Furthermore, we only found the putative species, Triops longicaudatus "short", with enough distinct speciation. Although Triops longicaudatus "long" and Triops newberryi may be in the early stages of speciation, this study does not find enough support to conclude that they have separated.
ContributorsMurphy Jr., Patrick Joseph (Author) / Rutowski, Ronald (Thesis director) / Cartwright, Reed (Committee member) / Lessios, Nikos (Committee member) / School of Life Sciences (Contributor) / School of Human Evolution and Social Change (Contributor) / Barrett, The Honors College (Contributor)
Created2016-05
Description
Dogs' health and wellbeing is of great importance to their owners. The most common nutritional problem for pet dogs is obesity, with 22-40% of pet dogs being classified as overweight or obese. With many adverse health effects associated with obesity, this is a major concern for owners and veterinarians. The degree to which dogs enjoy consuming certain foods can have substantial implications for their body weight, so it is important to understand which aspects of foods make them appealing to dogs. This study aimed to determine whether nutritional aspects of commercial dog foods predict dogs' preferences for those foods. It was found that consumption preference is positively correlated with protein content (p < .001), therefore implying that the protein content of commercial dry dog foods may predict dogs' consumption preferences. Consumption preferences were not predicted by other available measures of food content or caloric value. Dogs' preference for foods high in protein content may be due to the satiating effect of protein. Since foods high in protein both reduce the amount of energy consumed and are found to be palatable to dogs, high-protein dog foods may offer a way for dog food manufacturers, veterinarians, and pet owners to combat obesity in pet dogs.
ContributorsPrevost, Emily Danielle (Author) / Wynne, Clive (Thesis director) / Hall, Nathaniel (Committee member) / School of Life Sciences (Contributor) / Department of Psychology (Contributor) / Barrett, The Honors College (Contributor)
Created2016-05
Description
Learning how to manage time efficiently is something that many people struggle with, college students in particular. The purpose of this study was to examine if personalization via self-experimentation of strategies to improve time management skills is a useful strategy for achieving this goal. This study used a multiple baseline approach with three phases: phase one, the baseline, phase two, which included individuals receiving examples of plausible strategies to improve time management skills, and phase three, which involved the self-experimentation component. Results of this study suggest no significant changes in time management based on self-reported completion of tasks but do indicate a trend towards improved time management skills overall based on the time management questionnaire taken at the beginning and end of the study. These results suggest that further exploration in the use of self-experimentation strategies for improving time management is likely warranted but that current strategies likely require additional research. Results from the interviews indicate that the self-experimentation strategy, as delivered via PACO does increase awareness and thinking about time management.
ContributorsCope, Breanna (Author) / Hekler, Eric (Thesis director) / Buman, Matthew (Committee member) / School of Life Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2016-05