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- Member of: Barrett, The Honors College Thesis/Creative Project Collection
Description
As the prevalence of childhood obesity in the United States rises, opportunities for children to be physically active become more vital. One opportunity for physical activity involves children walking to and from school. However, children that live in areas with a pedestrian-unfriendly built environment and a low degree of walkability are less likely to be physically active and more likely to be overweight. The purpose of this study was to study walking routes from schools in low-income neighborhoods in Southwestern United States to a local community center. Walking routes from the three study schools (South Mountain High School, Percy Julian Middle School, and Rose Linda Elementary School) were determined by distance, popularity, and the presence of a major thoroughfare. Segments and intersections, which formed the routes, were randomly selected from each school's buffer region. The walking routes as a whole, along with the segments and intersections, were audited and scored using built environment assessments tools: MAPS, PEQI and Walkability Checklist. These scores were utilized to develop interactive mapping tools to visualize the quality of the routes, segments and intersections and identify areas for improvement. Results showed that the routes from Percy Julian to the Kroc Center were, overall, rated higher than routes from the other two schools. The highest scoring route, from the seven routes studied, was route 2 from Percy Julian to the Kroc Center along Broadway Road. South Mountain High School was overall the worst starting point for walking to the Kroc Center as those three walking routes were graded as the least walkable. Possible areas for improvement include installing traffic calming features along major thoroughfares and reducing the perceived risk to pedestrian safety by beautifying the community by planting greenery. Future directions include studying the built environment in South Phoenix communities that surround the Kroc Center.
ContributorsZeien, Justin Lee (Author) / Buman, Matthew (Thesis director) / Hekler, Eric (Committee member) / Fellows, Brian (Committee member) / Barrett, The Honors College (Contributor) / School of Sustainability (Contributor) / Department of Chemistry and Biochemistry (Contributor)
Created2015-05
Description
Exercise is a great boon to both the health of individuals and the national as a whole. Exercise provides a wide range of significant and well established benefits to both physical and psychological health, with many benefits that are still being discovered. The effects of exercise on health are somewhat unique, as exercise is one of a limited number of ways to improve health that is not harm a reduction strategy, but instead increases health through direct benefit, rather than increasing health by decreasing damage and harm. Support is also given to the proposal that individuals are in best position to determine the intensity of exercise and to choose primary activities to participate in, in order to provide near maximum physical and psychological benefit, with the understanding that frequency of exercise is of the upmost importance for benefit. The accessibility of exercise and the tremendous health benefit of exercise, makes exercise a huge asset in reducing the exorbitant health care spending and improving mediocre health outcomes in this country; a reasonable goal as numerous countries have better health the United States, even though the United States spends the more than any other country on health.
ContributorsRael, Ashur Scott (Author) / Kashiwagi, Dean (Thesis director) / Kashiwagi, Jacob (Committee member) / Barrett, The Honors College (Contributor) / Department of Chemistry and Biochemistry (Contributor) / School of Film, Dance and Theatre (Contributor)
Created2015-05
Description
With higher than normal levels of cardiovascular disease, diabetes, obesity, and sexually transmitted diseases within the Deaf community, it is clear that the current level of medical care is failing. This can stem from many different issues, from the mistrust of doctors to the fact that scientific education in the Deaf community is introduced at a later time in comparison to the hearing population. Similarly, there is a distinct lack of Deaf and hard of hearing medical staff. All of this culminates in the fact that the system needs to change. The addition of more Deaf staff in the medical environment, more staff interpreters, and doctors that have experience with the Deaf community engenders the metamorphosis of this group from unhealthy to healthy. Extra exposure for doctors during clinical rotations to deaf patients as well as training in Deaf Culture will further increase the comfort level of Deaf community members utilizing health services. As a result, the overall state of medical care for the Deaf population will improve with these modifications to the current system.
ContributorsBrar, Serbnoor Singh (Author) / Quinn, Paul (Thesis director) / Howard, Pamela (Committee member) / Barrett, The Honors College (Contributor) / Department of Chemistry and Biochemistry (Contributor)
Created2015-05
Description
The goals of the styrene oxide adsorption experiments were to develop reliable isotherms of styrene oxide onto Dowex Optipore L-493 resin and onto mesoporous carbon adsorbents, in addition to determining the ideal conditions for styrene oxide production from E. coli. Adsorption is an effective means of separation used in industry to separate compounds, often organics from air and water. Styrene oxide adsorption runs without E. coli were conducted at concentrations ranging from 0.15 to 3.00 g/L with resin masses ranging from 0.1 to 0.5 g of Dowex Optipore L-493 and 0.5 to 0.75 g of mesoporous carbon adsorbent. Runs were conducted on a shake plate operating at 80 rpm for 24 hours at ambient temperature. Isotherms were developed from the results and then adsorption experiments with E. coli and L-493 were performed. Runs were conducted at glucose concentrations ranging from 20-40 g/L and resin masses of 0.100 g to 0.800 g. Samples were incubated for 72 hours and styrene oxide production was measured using an HPLC device. Specific loading values reached up to 0.356 g/g for runs without E. coli and nearly 0.003 g of styrene oxide was adsorbed by L-493 during runs with E. coli. Styrene oxide production was most effective at low resin masses and medium glucose concentrations when produced by E. coli.
ContributorsHsu, Joshua (Co-author) / Oremland, Zachary (Co-author) / Nielsen, David (Thesis director) / Staggs, Kyle (Committee member) / Barrett, The Honors College (Contributor) / Chemical Engineering Program (Contributor) / School of Sustainability (Contributor)
Created2014-05
Description
Metal-organic frameworks (MOFs) are a new set of porous materials comprised of metals or metal clusters bonded together in a coordination system by organic linkers. They are becoming popular for gas separations due to their abilities to be tailored toward specific applications. Zirconium MOFs in particular are known for their high stability under standard temperature and pressure due to the strength of the Zirconium-Oxygen coordination bond. However, the acid modulator needed to ensure long range order of the product also prevents complete linker deprotonation. This leads to a powder product that cannot easily be incorporated into continuous MOF membranes. This study therefore implemented a new bi-phase synthesis technique with a deprotonating agent to achieve intergrowth in UiO-66 membranes. Crystal intergrowth will allow for effective gas separations and future permeation testing. During experimentation, successful intergrown UiO-66 membranes were synthesized and characterized. The degree of intergrowth and crystal orientations varied with changing deprotonating agent concentration, modulator concentration, and ligand:modulator ratios. Further studies will focus on achieving the same results on porous substrates.
ContributorsClose, Emily Charlotte (Author) / Mu, Bin (Thesis director) / Shan, Bohan (Committee member) / Chemical Engineering Program (Contributor) / Barrett, The Honors College (Contributor)
Created2016-12
Description
Styrene, a component of many rubber products, is currently synthesized from petroleum in a highly energy-intensive process. The Nielsen Laboratory at Arizona State has demonstrated a biochemical pathway by which E. coli can be engineered to produce styrene from the amino acid phenylalanine, which E. coli naturally synthesizes from glucose. However, styrene becomes toxic to E. coli above concentrations of 300 mg/L, severely limiting the large-scale applicability of the pathway. Thus, styrene must somehow be continuously removed from the system to facilitate higher yields and for the purposes of scale-up. The separation methods of pervaporation and solvent extraction were investigated to this end. Furthermore, the styrene pathway was extended by one step to produce styrene oxide, which is less volatile than styrene and theoretically simpler to recover. Adsorption of styrene oxide using the hydrophobic resin L-493 was attempted in order to improve the yield of styrene oxide and to provide additional proof of concept that the flux through the styrene pathway can be increased. The maximum styrene titer achieved was 1.2 g/L using the method of solvent extraction, but this yield was only possible when additional phenylalanine was supplemented to the system.
ContributorsMcDaniel, Matthew Cary (Author) / Nielsen, David (Thesis director) / Lind, Mary Laura (Committee member) / McKenna, Rebekah (Committee member) / Barrett, The Honors College (Contributor) / Department of Chemistry and Biochemistry (Contributor) / Chemical Engineering Program (Contributor)
Created2013-05
Description
Background: The American Heart Association has created an Official 2012 Hands-Only CPR Instructional Video that is approximately one minute in length and has been viewed over 600,000 times on YouTube. Objective: To evaluate the video's effectiveness in teaching adolescents aged 12-17 hands-only CPR. Methodology: The study took place in the Phoenix metropolitan area. Study participants were recruited from high schools, junior high schools and the Tempe Boys & Girls Club. The 100 study participants took a short, four question survey and watched video on either a laptop computer or video projector. Participants were then subjected to a cardiac arrest mock scenario in which they were tested on calling 911, compression rate, compression depth, and hand placement using a Lifeform CPArlene Recording Manikin. In analysis of the data, subjects were separated into four groups: 12-14 year olds (middle school aged) who had previous CPR training (MSG-T), 12-14 year olds with no previous training (MSG-U), 15-17 year olds (high school aged) who had previous training (HSG-T) and 15-17 year olds with no previous training (HSG-U). Results: Every study participant performed hands-only CPR during the mock scenario. Between the two middle school-aged groups, the MSG-U was more likely to call 911 during the mock scenario (P<0.05). There were no significant differences in compression rate and depth between the MSG-U and MSG-T. Between the two high school-aged groups, the HSG-T was more likely to call 911 during the mock scenario (P<0.05). There was no significant difference in compression rate between the HSG-T and HSG-U groups. The HSG-T compressed the chest significantly deeper than the HSG-U group (P<0.05). The HSG-T was the only group to statistically be on par with the AHA recommended 100 compressions/minute (P<0.05). All other groups were significantly below the 100 compressions/minute standard. No groups were statistically on par with the AHA recommended compression depth of two inches. Conclusion: The Official 2012 Hands-Only Instructional Video should not be used as a definitive training tool to teach school-aged adolescents hands-only CPR. This video, as well as other similar training videos, would be useful as introductory tools for children 12-14 years of age or as a refresher for older children who have received previous training.
ContributorsChoppi, Joseph Anthony (Author) / Johnston, Carol (Thesis director) / Hall, Rick (Committee member) / Gross, Toni (Committee member) / Barrett, The Honors College (Contributor) / Department of Chemistry and Biochemistry (Contributor)
Created2013-05