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The primary objective of this research project is to develop dual layered polymeric microparticles with a tunable delayed release profile. Poly(L-lactic acid) (PLA) and poly(lactic-co-glycolic acid) (PLGA) phase separate in a double emulsion process due to differences in hydrophobicity, which allows for the synthesis of double-walled microparticles with a PLA

The primary objective of this research project is to develop dual layered polymeric microparticles with a tunable delayed release profile. Poly(L-lactic acid) (PLA) and poly(lactic-co-glycolic acid) (PLGA) phase separate in a double emulsion process due to differences in hydrophobicity, which allows for the synthesis of double-walled microparticles with a PLA shell surrounding the PLGA core. The microparticles were loaded with bovine serum albumin (BSA) and different volumes of ethanol were added to the PLA shell phase to alter the porosity and release characteristics of the BSA. Different amounts of ethanol varied the total loading percentage of the BSA, the release profile, surface morphology, size distribution, and the localization of the protein within the particles. Scanning electron microscopy images detailed the surface morphology of the different particles. Loading the particles with fluorescently tagged insulin and imaging the particles through confocal microscopy supported the localization of the protein inside the particle. The study suggest that ethanol alters the release characteristics of the loaded BSA encapsulated in the microparticles supporting the use of a polar, protic solvent as a tool for tuning the delayed release profile of biological proteins.
ContributorsFauer, Chase Alexander (Author) / Stabenfeldt, Sarah (Thesis director) / Ankeny, Casey (Committee member) / Barrett, The Honors College (Contributor) / Harrington Bioengineering Program (Contributor)
Created2015-05
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Chronic stress has been linked as a probable contributor to a number of health problems that plague the world today. Obesity, cardiovascular disease, depression, and osteoporosis are all common health risks believed to be exacerbated by stress. While it is nether realistic nor desirable to completely eliminate stress in an

Chronic stress has been linked as a probable contributor to a number of health problems that plague the world today. Obesity, cardiovascular disease, depression, and osteoporosis are all common health risks believed to be exacerbated by stress. While it is nether realistic nor desirable to completely eliminate stress in an individual, proper stress management is important to a healthy lifestyle. Homeostasis is the primary mechanism by which stress, and the stress response, should be analyzed. Environmental factors known as stressors elicit responses from the body, which can be measured in terms of duration and magnitude. These two factors determine the homeostatic response from the body. This thesis proposes the study of heart rate variability (HRV) to measure the response of the autonomic nervous system through time domain analysis (the length of interbeat intervals) and frequency domain analysis (the differences between the lengths of consecutive interbeat intervals). Even with many possible problems, this data still represents valuable proof of concept that HRV analysis may be of use in identifying stress.
ContributorsUchimura, Kevin (Author) / LaBelle, Jeffrey (Thesis director) / Pizziconi, Vincent (Committee member) / Stabenfeldt, Sarah (Committee member) / Barrett, The Honors College (Contributor)
Created2012-05
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Description

The following paper explores the various effects of stress on the endocrine system. Many understand that being stressed can jeopardize maintaining adequate health, but what specifically happens when humans are stressed? Why does stress affect human health? This paper delves into background information, previous research, and the depths to which

The following paper explores the various effects of stress on the endocrine system. Many understand that being stressed can jeopardize maintaining adequate health, but what specifically happens when humans are stressed? Why does stress affect human health? This paper delves into background information, previous research, and the depths to which stress negatively affects the body. The effects stress has on the endocrine system, specifically on the hypothalamic-pituitary-thyroid axis (HPT) and hypothalamic-pituitary-adrenal axis (HPA), is discussed, and additionally, at home de-stressing methods are researched. The study included a set of participants at Arizona State University. The method took place over the course of 2 weeks: one normal week, and the other with the implementation of a de-stressing method. The normal week involved the participants living their daily lives with the addition of a stress-measuring survey, while the second week involved implementing a de-stressing method and stress-measuring survey. The purpose of this study was to discover if there was a correlation between performing these relaxation activities and decreasing stress levels in ASU students. The results found that students reported they felt more relaxed and calm after the activities. Overall, this thesis provides information and first hand research on the effects of stress and stress-reducing activities and discusses the importance of maintaining lower stress levels throughout everyday life.

ContributorsWeissmann, Megan Diane (Co-author) / Gebara, Nayla (Co-author) / Don, Rachael (Thesis director) / Irving, Andrea (Committee member) / Kizer, Elizabeth (Committee member) / College of Health Solutions (Contributor) / Edson College of Nursing and Health Innovation (Contributor) / Barrett, The Honors College (Contributor)
Created2021-05
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Description

The following paper explores the various effects of stress on the endocrine system. Many understand that being stressed can jeopardize maintaining adequate health, but what specifically happens when humans are stressed? Why does stress affect human health? This paper delves into background information, previous research, and the depths to which

The following paper explores the various effects of stress on the endocrine system. Many understand that being stressed can jeopardize maintaining adequate health, but what specifically happens when humans are stressed? Why does stress affect human health? This paper delves into background information, previous research, and the depths to which stress negatively affects the body. The effects stress has on the endocrine system, specifically on the hypothalamic-pituitary-thyroid axis (HPT) and hypothalamic-pituitary-adrenal axis (HPA), is discussed, and additionally, at home de-stressing methods are researched. The study included a set of participants at Arizona State University. The method took place over the course of 2 weeks: one normal week, and the other with the implementation of a de-stressing method. The normal week involved the participants living their daily lives with the addition of a stress-measuring survey, while the second week involved implementing a de-stressing method and stress-measuring survey. The purpose of this study was to discover if there was a correlation between performing these relaxation activities and decreasing stress levels in ASU students. The results found that students reported they felt more relaxed and calm after the activities. Overall, this thesis provides information and first hand research on the effects of stress and stress-reducing activities and discusses the importance of maintaining lower stress levels throughout everyday life.

ContributorsGebara, Nayla F (Co-author) / Weissmann, Megan (Co-author) / Don, Rachael (Thesis director) / Irving, Andrea (Committee member) / Kizer, Elizabeth (Committee member) / Edson College of Nursing and Health Innovation (Contributor) / College of Health Solutions (Contributor) / Barrett, The Honors College (Contributor)
Created2021-05
Description

The goal of this research project is to create a Mathcad template file capable of statistically modelling the effects of mean and standard deviation on a microparticle batch characterized by the log normal distribution model. Such a file can be applied during manufacturing to explore tolerances and increase cost and

The goal of this research project is to create a Mathcad template file capable of statistically modelling the effects of mean and standard deviation on a microparticle batch characterized by the log normal distribution model. Such a file can be applied during manufacturing to explore tolerances and increase cost and time effectiveness. Theoretical data for the time to 60% drug release and the slope and intercept of the log-log plot were collected and subjected to statistical analysis in JMP. Since the scope of this project focuses on microparticle surface degradation drug release with no drug diffusion, the characteristic variables relating to the slope (n = diffusional release exponent) and the intercept (k = kinetic constant) do not directly apply to the distribution model within the scope of the research. However, these variables are useful for analysis when the Mathcad template is applied to other types of drug release models.

ContributorsHan, Priscilla (Author) / Vernon, Brent (Thesis director) / Nickle, Jacob (Committee member) / Harrington Bioengineering Program (Contributor, Contributor) / Barrett, The Honors College (Contributor)
Created2021-05
Description

Allostatic load in students, commonly referred to as student burnout, is extremely detrimental to emotional, mental, and physical health. Recent studies are finding an uptick in allostatic load in students, as academic pressures continue to rise. In order to meet the changing needs of students, universities should address the effects

Allostatic load in students, commonly referred to as student burnout, is extremely detrimental to emotional, mental, and physical health. Recent studies are finding an uptick in allostatic load in students, as academic pressures continue to rise. In order to meet the changing needs of students, universities should address the effects of overwhelming academic stress and student burnout. My thesis aimed to provide college campuses with the tools they need to do so, particularly through the implementation of Talking Circles. Talking Circles are structured discussions aimed to address specific issues, problems, or talking points. I had the opportunity to design, create, and facilitate Talking Circles with the American Holistic Nurses Association (AHNA) Chapter at Arizona State University. The focus of these circles were designed to have specific emphasis on reducing allostatic load in ASU’s student population. Thus, the Talking Circle prompts, following the principles of positive psychology, focused on emphasizing individual strengths in regards to handling stress. Through individual participant feedback, students felt “empowered, strengthened, and safe” after participating in the Talking Circles. In addition to facilitating these psychosocial support groups, I created a digital toolkit that allows for easier accessibility and distribution of Talking Circles. This allows for not only more students at ASU to feel ‘empowered and strengthened’ but for college students across the U.S. to have the tools, resources, and access to manage stress and reduce allostatic load.

ContributorsSouffront, Cora (Author) / Augusta, Dawn (Thesis director) / Reeves-Blurton, Zachary (Committee member) / Mun, Chung (Committee member) / Barrett, The Honors College (Contributor) / Edson College of Nursing and Health Innovation (Contributor) / Department of Psychology (Contributor)
Created2023-05
Description

This study utilized a Convergent Mixed Methods design to identify different expressions of resilience in response to a health/familial problem. The research aimed to determine which specific expressions of resilience were significantly associated with higher levels of resilience. The findings revealed two significant effects related to social support and persistence

This study utilized a Convergent Mixed Methods design to identify different expressions of resilience in response to a health/familial problem. The research aimed to determine which specific expressions of resilience were significantly associated with higher levels of resilience. The findings revealed two significant effects related to social support and persistence as expressions of resilience. The High Resilience group exhibited a higher proportion of individuals mentioning persistence and social support in their coping strategies. The study concluded that social support seeking is a major coping strategy among individuals with high resilience and suggested that healthcare providers, particularly nurses, should recommend and provide resources for clients to seek social support. Furthermore, the role of persistence highlights the importance of encouraging clients to set achievable goals, develop a plan, and monitor their progress to remain motivated in resolving their difficult health-related problem.

ContributorsJohn, Avery (Author) / Castro, Felipe (Thesis director) / Lober, Angela (Committee member) / Juarigue, Lisa (Committee member) / Barrett, The Honors College (Contributor) / Edson College of Nursing and Health Innovation (Contributor)
Created2023-05
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Description
The purpose of this pilot study is to explore the coping mechanisms utilized by school nurses in response to stress encountered working in the high school setting. One aim of this research is to identify both positive and negative coping strategies by school nurses. A secondary objective is to determine

The purpose of this pilot study is to explore the coping mechanisms utilized by school nurses in response to stress encountered working in the high school setting. One aim of this research is to identify both positive and negative coping strategies by school nurses. A secondary objective is to determine some of the stressors these nurses experience in the workplace. This paper also seeks to find missing information in school nursing literature in order to identify areas of research that could be further explored as a result of this pilot study. This study consisted of five singular, phone interviews to a total of five high school nurses working in a singular school district in the state of Arizona. These interviews consisted of qualitative questions focused on stressful experiences and actions taken by the nurse as a response. Demographic data was also collected in an additional survey after the interviews. Additional literature was reviewed and patterns between literature and interview data were analyzed, as it was determined the data collected from interviews was not enough to reach data saturation. Thematic analysis was performed on the collected data to determine key concepts relating to coping by school nurses. The results of this analysis indicated number of factors relating to stress levels in the school healthcare setting and different coping methods. Themes often used in coping mechanisms included learning from experience, preventative teaching, communication, faith & self- reflection, sense of purpose, positivity, self-care versus neglect, and depersonalization. Due to the limited setting and results of this pilot study, additional research is indicated in the area of coping and stress in school nursing literature.
ContributorsPorritt, Mariah K (Author) / Jaurigue, Lisa (Thesis director) / Edson College of Nursing and Health Innovation (Contributor) / Barrett, The Honors College (Contributor)
Created2020-12