This paper focuses on the fabrication and characterization of shape memory polymer (SMP) with interspersed carbon-based nanofillers which showed significant improvements in quasi-static and dynamic mechanical properties. These composite shape memory polymers have been fabricated using a specialized acetone solvent mixing technique to achieve high dispersion. The effect of individual and hybrid additions of graphene oxide (GO) and carbon nanotubes (CNT) with a total nanofiller content of 2 wt.% was investigated. These high dispersion SMPs showed significant improvements in tensile moduli (up to 25% over baseline), tensile strength (up to 15% over baseline), and strain to failure (up to 75% over baseline), owing to crack propagation hindrance induced by the carbon nanofillers. Further, dynamic mechanical analysis (DMA) showed a minimal reduction in polymer chain mobility and improvements in storage modulus. Dispersion is characterized by micrograph acquisition and subsequent binary image processing.

From Anglo-American Martial and Social Culture to a Distinct American Martial and Social Culture is a historical thesis which documents the origins and perspectives of English settlers in North America from 1607 until American independence recognized in the 1783 Treaty of Paris. Over the course of these 176 years, the mindset of those living on the American frontier was analyzed through the martial and social culture that developed. Some examples of Anglo-American adaptations to living on the American frontier were legislative assemblies and a continent-spanning local militia. Questions ranging from why the English settlers chose to live in the Americas to how they overcame sectional differences to form the United States of America were questions that this thesis attempted to answer. The conclusion from analyzing primary and secondary sources shows the initial development of an Anglo-American culture which over the course of more than a century diverges into a unique American identity, distinct from British subjects and agents of empire. Whereas British citizens in the Americas started out as staunch defenders and agents of the global British Empire, this thesis documents the transformation of British citizens in North America from a British cultural identity to a distinct American cultural identity.

Considered by colonists as an extension of France, Algeria was subjected to more than 125 years of French control. The Algerian people were thus heavily influenced by the French language and were required to abandon their native language in many aspects of their life such as government and education. This thesis aims to highlight the linguistic power relations established by the French in Colonial Algeria. Language usage and policies leading up to the Algerian War for Independence are critical to understanding the successor government. Analyzing three sections of language in Colonial Algeria- radio, language of instruction, and literature- I find that the language of instruction in education is the most influential in determining and formulating identities and power relations. Ultimately, this thesis concludes that language, power, and identity overlap and influence each other in several ways, producing a complex post-colonial society

The goal of this thesis is to better understand the outcomes of both treated and untreated maternal depression on fetal development and birth defects. We focus on a class of antidepressant drugs known as selective serotonin reuptake inhibitors (SSRIs). We hope to gain insight into how these effects might carry on into childhood and adolescent years. While research shows there are potentially significant consequences for the fetus in both treated and untreated scenarios, it remains unclear whether depression itself or SSRIs play the larger role in the outcomes of children born from these women. We begin with a general history of depression and the introduction of SSRIs, followed by a review of the physiology of depression and SSRI treatment. We then narrow our focus to the history of maternal depression, SSRI usage in pregnant women, and potential risk factors. Following this, we analyze studies on the effects of depression and SSRI usage on the fetus and at birth, paying careful attention to the cortisol pathway that results from depression itself and the biochemical effects that SSRIs have on embryogenesis and fetal development. While there is limited research on the long-term effects of fetal exposure to SSRI-treated and untreated maternal depression, one of the aims of this thesis is to understand the potential risks for children throughout their developmental years and into adolescence. Therefore, we also researched the effects of depression and SSRI use in children and adolescents themselves, comparing this information to the effects of both SSRI-treated and untreated maternal depression. We believe there is sufficient evidence of causal connections involving cortisol (in untreated depression) and SSRIs (in pharmacologically treated depression) to warrant caution regarding the use of SSRIs in a clinical setting. We suggest alternative treatments for depression such as Cognitive Behavioral Therapy (CBT), which have been shown to be effective, and which have very little chance for harm. Notably, such treatments can be of real benefit regardless of the underlying biological, psychological, and social causes of depression. Finally, we conclude by suggesting some preventative treatments for maternal depression. While we do not believe the use of SSRIs needs to be completely avoided in the case of maternal depression, we believe that better practitioner education in preventing depression could go a long way in making them unnecessary in most cases.

Synthetic plastics are ubiquitously used in a broad range of applications, including food and drink packaging. Plastics often contain chemical additives, including bisphenols, phthalates, and terephthalic acid, which can degrade under thermal stress. The environmental presence of these chemicals is cause for public concern, especially in consumer products that utilize plastic packaging, as many have been identified as endocrine disruptors. This study sought to determine exposure to phthalates, bisphenols, and terephthalic acid by quantifying a broad spectrum of these analytes within three bottled water brands at varying temperature exposure levels using the combination of solid phase extraction followed by isotope dilution liquid chromatography-tandem mass spectrometry. Monobenzyl phthalate was detected in two of the three brands after bottles were heated to ~100 °C, ranging from 98 – 107 ng/L, and bisphenol A was detected in one brand at ~100 °C at an average concentration of 748 ± 36 ng/L. Subsequent mass loading calculations demonstrated that bioaccumulation of BPA from Brand C after high levels of temperature exposure well exceeded the tolerable daily intake (TDI). Findings in this study indicate that consumers should not be expected to incur harmful exposures to the target compounds under normal conditions as analytes were not measured in water bottle samples at 25 °C or 60 °C. Further studies should explore a more nuisance approach to heating over long durations, including that of ultraviolet exposure.

Background: Unintentional injury has been the leading cause of death for children and teenagers in the United States for the past 2 decades. Its health outcomes are often studied, but it may also relate to psychological concepts such as emotion dysregulation, which may also result in severe outcomes for individuals, families, and societies. There is no consensus on a conceptual definition of emotion dysregulation, and little prior literature on the specific relation between dysregulation and injury in the transition to adolescence. Methods: The current study aims to identify latent factors of emotion dysregulation using exploratory factor analyses. Subsequently, multilevel regressions illuminate relations between dysregulation and injury at 2 late childhood and early adolescence time points in a large ethnically, socioeconomically, and regionally representative sample of Arizona twins recruited from birth records and ongoing efforts. Results: 6 total factors representing emotion dysregulation at 2 ages were created. Factors were valid when tested against temperament and psychopathology constructs. No significant longitudinal or cross-sectional associations between emotion dysregulation factors and unintentional injury were found. Sex and rurality differences were found in factor scores and dysregulation outcomes. Discussion: The current study highlights new avenues of research and funding. Future research on this topic should reflect a concentrated and nuanced focus on injury. Concordant age 9 and age 11 factors loaded differently, which urges the field to strive toward developing a standardized definition for emotion dysregulation. Covariate differences highlight target populations for interventions in unintentional injury and emotion dysregulation, which remain independent areas of concern.