Matching Items (74)
Filtering by
- All Subjects: Microbiology
- All Subjects: medicine
- All Subjects: Creative Project
- Creators: School of Life Sciences
- Member of: Theses and Dissertations
Description
Space microbiology, or the study of microorganisms in space, has significant applications for both human spaceflight and Earth-based medicine. This thesis traces the evolution of the field of space microbiology since its creation in 1935. Beginning with simple studies to determine if terrestrial life could survive spaceflight, the field of space microbiology has grown to encompass a substantial body of work that is now recognized as an essential component of NASA' research endeavors. Part one provides an overview of the early period of space microbiology, from high-altitude balloon and rocket studies to work conducted during the Apollo program. Part two summarizes the current state of the field, with a specific focus on the revolutionary contributions made by the Nickerson lab at the Biodesign Institute at ASU using the NASA-designed Rotating Wall Vessel (RWV) Bioreactor. Finally, part three highlights the research I've conducted in the Nickerson lab, as well as continuing studies within the field of space microbiology.
ContributorsMcCarthy, Breanne E. (Author) / Lynch, John (Thesis director) / Foy, Joseph (Committee member) / School of Life Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2016-05
Description
Students Organize for Syria (SOS) is the student led initiative for Syria. With 18 registered chapters across the United States, this student organization is targeting a multidimensional cause by different means. Though it is now a national movement, it started off with one group at Arizona State University, with one student. Zana Alattar, founder and student director of SOS, tells the story of how she took an ASU organization, Save Our Syrian Freedom (SOS Freedom), to the national level as SOS. As a pre-medical student, she also combines her work in human rights with her future in healthcare. After all, health and human rights have long maintained a synergistic relationship.
ContributorsAlattar, Zana (Author) / Graff, Sarah (Thesis director) / McClurg, Sharolyn (Committee member) / School of Molecular Sciences (Contributor) / School of Social Transformation (Contributor) / School of Life Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2016-05
Description
Many bacteria actively import environmental DNA and incorporate it into their genomes. This behavior, referred to as transformation, has been described in many species from diverse taxonomic backgrounds. Transformation is expected to carry some selective advantages similar to those postulated for meiotic sex in eukaryotes. However, the accumulation of loss-of-function alleles at transformation loci and an increased mutational load from recombining with DNA from dead cells create additional costs to transformation. These costs have been shown to outweigh many of the benefits of recombination under a variety of likely parameters. We investigate an additional proposed benefit of sexual recombination, the Red Queen hypothesis, as it relates to bacterial transformation. Here we describe a computational model showing that host-pathogen coevolution may provide a large selective benefit to transformation and allow transforming cells to invade an environment dominated by otherwise equal non-transformers. Furthermore, we observe that host-pathogen dynamics cause the selection pressure on transformation to vary extensively in time, explaining the tight regulation and wide variety of rates observed in naturally competent bacteria. Host-pathogen dynamics may explain the evolution and maintenance of natural competence despite its associated costs.
ContributorsPalmer, Nathan David (Author) / Cartwright, Reed (Thesis director) / Wang, Xuan (Committee member) / Sievert, Chris (Committee member) / School of Life Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2016-05
Description
Clean water for drinking, food preparation, and bathing is essential for astronaut health and safety during long duration habitation of the International Space Station (ISS), including future missions to Mars. Despite stringent water treatment and recycling efforts on the ISS, it is impossible to completely prevent microbial contamination of onboard water supplies. In this work, we used a spaceflight analogue culture system to better understand how the microgravity environment can influence the pathogenesis-related characteristics of Burkholderia cepacia complex (Bcc), an opportunistic pathogen previously recovered from the ISS water system. The results of the present study suggest that there may be important differences in how this pathogen can respond and adapt to spaceflight and other low fluid shear environments encountered during their natural life cycles. Future studies are aimed at understanding the underlying mechanisms responsible for these phenotypes.
ContributorsKang, Bianca Younseon (Author) / Nickerson, Cheryl (Thesis director) / Barrila, Jennifer (Committee member) / Ott, Mark (Committee member) / School of Life Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2016-05
Description
Vaccinia virus (VV) is a prototype virus of the Orthopox viruses. The large dsDNA virus composed of 200kbp genome contains approximately 200 genes and replicates entirely in the cytosol. Since its use as a live vaccine against smallpox that leads to the successful eradication of smallpox, Vaccinia has been intensely studied as a vaccine vector since the large genome allows for the insertion of multiple genes. It is also studied as a molecular tool for gene therapy and gene functional study. Despite its success as a live vaccine, the vaccination causes some mild to serious bur rare adverse events in vaccinees such as generalized Vaccinia and encepharitis. Therefore, identification of virulence genes and removal of these genes to create a safer vaccine remain an important tasks. In this study, the author seeks to elucidate the possible relationship between immune evading proteins E3 and B19. VV did not allow double deletions of E3 and B19, indicating the existence of a relationship between the two genes.
ContributorsBarclay, Shizuka (Author) / Jacobs, Bertram (Thesis director) / Ugarova, Tatiana (Committee member) / Kibler, Karen (Committee member) / School of Life Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2016-05
Description
Although the number of women earning college degrees and entering the workforce is increasing, a gender gap persists at top leadership positions. Women are faced with numerous challenges throughout the talent pipeline, challenges that often drive women out of the workforce. This paper looks at the power of mentoring and how women, particularly young women, have the potential to overcome these challenges through a successful mentoring relationship. We use examples of successful mentoring programs at the corporate and university level to support the development of a mentoring program at the high school level. Our paper presents the research and development process behind the Young Women in Leadership (YWiL) Workshop, a half-day event that focused on bringing awareness to the importance of mentoring and leadership at the high school level while providing young women with the confidence and knowledge to begin to establish their own mentoring relationships.
ContributorsRust, Brenna (Co-author) / Myers, Sheridan (Co-author) / Desch, Tim (Thesis director) / Kalika, Dale (Committee member) / Barrett, The Honors College (Contributor) / School of Life Sciences (Contributor) / School of Accountancy (Contributor) / T. Denny Sanford School of Social and Family Dynamics (Contributor) / WPC Graduate Programs (Contributor) / W. P. Carey School of Business (Contributor)
Created2015-05
Description
Human subject research is a sensitive ethical topic in today's society, and with good cause. The history of human subject research is full of tragedy and wrongdoing, which is what has led to the firm restrictions we presently have. At the same time, we also acknowledge the value behind human subject research and the information science can obtain from such endeavors. This project analyzes this conundrum through a narrative describing a group of scientists who choose to ignore some of the laws and regulations concerning human subject research in order to pursue neurological based research for a "greater good." In the novella, the scientists end up harming several people while performing their illegal research, but are able to obtain successful results. However, the group is eventually caught, and end up having to face the consequences of their actions. The situations and interactions the story presents are meant to juxtapose both sides of the human subject research ethical argument in a unique way in order to allow the reader to critically think through the argument themselves and form their own opinions on the matter.
ContributorsPirotte, Benjamin Daniel (Author) / Finn, Edward (Thesis director) / Cook, Paul (Committee member) / McGregor, Joan (Committee member) / Barrett, The Honors College (Contributor) / School of Life Sciences (Contributor) / School of Historical, Philosophical and Religious Studies (Contributor)
Created2015-05
Description
‘why we bend' a Bachelor of Fine Arts honors thesis exhibition by Ximenna Hofsetz and Tiernan Warner brings together installation, digital, sculptural, and printed artwork. The main focus concerns memory; and its vague, formless, and hazy nature. The work also examines what would happen if cognitive space could be physically mapped? What would it look like in sculptural form? Memory erodes and distorts with time. We influence our memories as much as they affect us. Thus, just as relationships are ever-changing, and our memories of those we interact with constantly shifting, our relationships with our own memories are malleable and evolve through time. This transient nature of memory is depicted in the various stylistic means of this exhibition by referencing time and space as well as personal memories and ephemera in both concrete and abstract ways. ‘why we bend’ implements a variety of multimedia techniques to examine recollection and its hold on us.
ContributorsHofsetz, Ximenna Cedella (Author) / Gutierrez, Rogelio (Thesis director) / Hood, Mary (Committee member) / Barrett, The Honors College (Contributor) / School of Life Sciences (Contributor) / School of Art (Contributor)
Created2014-12
Description
A Guiding Hand: Grief Response in Young Adults works to guide young adults thought the grieving process after the traumatic death of a loved one. It goes through the steps of grieving and what a person can expect when they suddenly lose someone dear. Written from the point of view of someone who had lost their best friend in a murder/suicide, A Guiding Hand, shares a personal view that is often missing in other books on grief. This piece works to prepare other young adults for the unexpected emotions that are associated with grief. It also works to provide coping strategies to help recover from a traumatic loss in a healthy manner and to put people in touch with resources they may not know exist in order to help with healing.
ContributorsSmith, Madison Ann (Author) / Foy, Joseph (Thesis director) / Shaeffer, John (Committee member) / Barrett, The Honors College (Contributor) / School of Life Sciences (Contributor)
Created2014-12
Description
In this study, we propose and then assess the efficacy of a new approach to static suspension to correct for facial paralysis. Our method involves placing barbed sutures through the superficial muscular aponeurotic system (SMAS) and anchoring them in the temporal fascia parallel to the underlying facial muscles. We first analyzed the ability of this procedure to improve facial symmetry by comparing the degree of asymmetry between the paralyzed and unaffected sides of a patient's face (N=10) prior to and following surgery. Then, to determine if symmetry is improved as a result of placing the sutures parallel to the direction of facial muscle forces, we measured the vectors of levator labii superioris and zygomaticus major in cadaver hemifaces (N=3) and compared them to the angles of the vectors of correction from the patient sample to angles of muscle vectors in three facial hemispheres from cadaver controls. Results indicate that: (1) facial symmetry was significantly improved in these patients and (2) this improvement. We conclude that, compared to existing protocols, our novel surgical method is a better means of static suspension for reconstruction following onset of facial paralysis as it is simple to perform, easy to replicate, able to be post-operatively adjusted in-office, has a good long-term prognosis, and, as we have demonstrated, effectively corrects the appearance of asymmetry by working with the underlying facial anatomy.
ContributorsLeach, Garrison Alecsander (Co-author) / Joganic, Jessica (Co-author) / Hooft, Nicole (Co-author) / Joganic, Edward (Co-author, Committee member) / Foy, Joseph (Thesis director) / School of Life Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2016-05