2014 Abstracts

Laurin Wilson, Utah State University Social and Behavioral Sciences Premature birth and subsequent hospitalization of an infant in the Newborn (or Neonatal) Intensive Care Unit (NICU) can be an extremely stressful time for parents and has been associated with maternal depression, anxiety, and decreased coping ability (Hack, Taylor, Klein, & Mercuri-Minich, 2000; Hughes, McCollum, & Sheftel, 1994; Partridge et al., 2005; Shaw, Sweester, St. John, Lilo, Corcoran, Jo, & Horwitz, 2013). Interventions to reduce parents’ stress levels during the hospitalization of their very preterm infants have mixed results (Boyce, et al., 2008; Matricardi, S., Agostino, R., Fedeli, C., & Montirosso, R., 2013). This study examined the medical, family, and maternal mental health factors that influenced feelings of parental distress for mother of very premature infants.

Kyle Nelson, Brigham Young University Social and Behavioral Sciences Most research on eye movement while reading has focused on native speakers reading in their own language. This has led to detailed characterizations of the differences between the eye movement of English and Chinese speakers when reading. However, there is a lack of research concerning eye movement differences when reading in a second language. It is expected that English speakers, reading simple letters, would exhibit different eye movements when reading Chinese characters, where words are commonly made up of one or two intricate symbols. Similar adjustments in eye movement are expected if a Chinese speaker tried to read English. Our study seeks to first measure how second language skill influences eye movement during reading and secondly, to distinguish eye movement behaviors that are controlled by either cognitive or visual factors. We hypothesized that as individuals increase in proficiency in their second language, their eye movements while reading a second language would begin to mimic a native speaker’s reading his own native language. Participants were native Chinese or English speakers selected from Chinese language courses and ESL courses taught at Brigham Young University. Participants were matched based on language proficiency and history of exposure to their second language. Native Chinese and English speakers read paragraphs in both Chinese and English while an eye-tracking machine recorded their eye movements. We measured such variables as fixation duration, Saccade amplitude, refixation probability and other important variables. These results will be analyzed to find the differences in eye movement that occur when reading in a second language compared to the participant’s native language. The results, strengths and limitations of the study and future research will be discussed. We believe our research will be beneficial in characterizing how individuals read in a second language, assessing language proficiency, and directing the development of language instruction methods.

Dusty Pilkington, Weber State University Social and Behavioral Sciences Boundaries dividing political authority rarely match natural water flow. Multiple agencies, often with competing policies and agendas, manage water within single watersheds. This discrepancy can render management efforts ineffective. Local water agencies include soil conservation districts, local health departments, and engineering agencies. Agencies have varying funding sources, managerial structures, and jurisdictional boundaries. Fragmentation can frustrate management efforts at watershed scales. Comparisons between natural watersheds and human political geography can therefore be helpful in avoiding conflicts. This research examines discrepancies between political and physical geographies for sections of three Utah rivers : the Logan and Provo Rivers, and Red Butte Creek. These rivers are being targeted for intensive research as part of a statewide, multidisciplinary water sustainability project, titled iUTAH. Water-related land use (WRLU) data acquired from Utah’s Automated Geographic Resource Center were analyzed using ArcGIS geoproceessing tools. WRLU contributing to water quality in urban river reaches is described. WRLU was examined using three boundary sets, comparing the political geography of the river reaches, as depicted in municipal boundaries and management areas of community water providers, to their physical geography, as depicted in United States Geologic Survey Hydrologic Unit Code (HUC) watersheds. WRLU mixes using political infrastructure were contrasted with land use mixes from HUC boundaries. WRLU was classified in seven categories: residential, commercial/industrial, riparian/water features, irrigated agriculture, non-irrigated agriculture, farmsteads, and parks/open spaces. A gradient from rural Heber, to urbanizing Logan, to fully urbanized Red Butte Creek is shown. While Red Butte Creek HUC boundaries showed 53.8 % residential land use, Red Butte Creek municipal boundaries and community providers totaled 26 % and 39 % residential use, respectively. Differences emerged when irrigated agriculture was assessed using HUC boundaries. Irrigated agriculture totaled 0.2 % in Red Butte Creek, with Logan showing 29. 7% and Heber irrigated agriculture sitting at 41.1 %.

Renette Goodrich, Utah Valley University Social and Behavioral Sciences In the realm of Adoption most of the focus is given to the birth parents and the adoptive couple. However, there are many more people involved, some being the birth grandparents, who are the parents of the expecting parents. These grandparents, most of who are dealing with feelings of loss and grief, have been left to struggle through the experience by themselves. A scholar from Well’s, were the law requires social services to be offered to the extended family, conducted studies with grandparents; some of whom received social services and some who did not. His found a statistically significant difference in those who participated in the social services and those who did not. Grandparents who took advantage of social services where less stressed and more excepting of the adoption. This pilot study was conducted at one agency in Utah. Because of HIPPA laws the only access was to those grandparents who attended the support group. This study also showed social service support for these grandparents where significant; by lowering the stress level of dealing with a child’s unexpected pregnancy and helping them with direction and acceptance. This was a qualitative and quantitative survey handed directly to the participants to fill out and return. The agency where this survey was conducted and other associated agencies are interested in these results to better improve currents services and reach out to other grandparents who are not currently participating in these groups. This topic has not been studied in the United States; thus this study will add to the body of scholarly knowledge on this topic.

Luz Maria Carreno, Utah State University Social and Behavioral Sciences Significance: Patients’ health literacy, or ability to comprehend and understand health information, influences their health status, knowledge about medical care and conditions, and hospitalization and adherence rate (Andrus, & Roth, 2002). Low-English proficiency patients are especially at risk, given they must overcome English and health literacy barriers.

Heather White, Brigham Young University Social and Behavioral Sciences The purpose of this poster is to illustrate the use of storyboards in visually evaluating exhibits and the visitor experience in a narrative museum. Storyboards, a key tool used to develop a visual story, can be used in museums to provide unique insights into the dynamic experience of visitors as they move through exhibits. This poster focuses on how storyboards can be used post-installation to evaluate how visual elements and space effect the visitor’s engagement and experience within exhibits. This poster will present storyboards for three exhibits and the resulting analysis. I analyzed the storyboards by examining artistic elements (line, color, shape, space, etc.) and design principles (unity, balance, scale, proportion, etc.) as they are formed and reformed throughout the storyboard. These changes are only noticeable because of the temporal aspect of sequenced storyboard images. The results show how the visual and spatial visitor experience encourages or discourages engagement with the exhibits. These results can be used, in addition to written and oral evaluation methods, to critique and improve exhibitions to be more accessible and engaging for future visitors.

Wendy Hendley, Utah Valley University Social and Behavioral Sciences The Personal Responsibility and Work Opportunity Reconciliation Act (PRWORA) passed in 1996 changed welfare dramatically. Meant to stop welfare fraud and dependency, it put into place numerous restrictions and promoted work, which meant that people on welfare, usually single mothers, were forced to participate in job-search activities in order to qualify for benefits. As a result, welfare recipients’ opportunities to attend college have decreased. Research has shown a negative correlation between educational attainment and poverty, the higher a person’s education the less chance they have of living in poverty. The human capital theory proposes that investing in education increases labor market returns. Unfortunately, with PRWORA’s focus on work, welfare recipients are forced to find low-wage jobs, which is not enough to lift them out of poverty. Although numerous studies have focused on welfare recipients’ reduced chances of receiving an education, few have looked at the wishes of welfare recipients themselves. This quantitative descriptive study uses secondary data analysis from a study done by the University of Utah’s Social Research Institute in 2006, and answers the following three questions: (1) what is the current level of completed education of welfare recipients; (2) do welfare recipients have a desire to further their schooling; (3) what barriers do they feel are preventing them from achieving their goals? This study found that a high percentage of welfare recipients had a desire to further their schooling, with the number one obstacle being financial. There is a significant gap between the wishes of welfare recipients concerning higher education and what is actually happening in their lives.

Danielle Jennings, Utah Valley University Social and Behavioral Sciences The popularity of surgical cosmetic procedures continues to climb in the U.S. (ASPS, 2012) and in other industrialized economies (ISAPS, 2011). This includes women in conservative cultures like Morocco and Afghanistan (Women of Afghanistan, 2012). This research was undertaken to examine attitudes towards plastic surgery among women who are members of the LDS Church. Utah boasts one of the highest concentrations of plastic surgeons in the U.S. (Lim, 2011) and is also majority LDS (Phillips and Cragun, 2011), rendering it ideal for this study. Data regarding attitudes towards surgery and levels of religious participation were collected from LDS women [n = 100] and men [n = 25] in Utah through a pilot survey administered in spring, 2013. The sample included women 19 — 81 years of age, 64% of whom were married, and 63% had grown up in Utah. Results indicated levels of religious participation were in keeping with other research involving Mormons (Hill et al., 2008) and 67% of women knew a female member of the Church who had had cosmetic surgery. Attitudes towards surgery varied by age and marital status. A second survey was created and administered via Qualtrics to LDS women [n =473] and men [n = 116] across the U.S. Results suggest variation in attitudes by geographic location, along with variation by gender, age, marital status, and familiarity with surgery. These results suggest aspects of Mormon life in Utah contribute to the popularity of surgery among Church members. These may include the pressures of dating and earlier ages at marriage (Maffly, 2010), coupled with demographic changes (Cragun and Phillips, 2011), as well as earlier ages at first birth of children (Davidson, 2008).

Mitchell Reid, Utah State University Social and Behavioral Sciences Chronic childhood aggression can be the beginning of a developmental trajectory that begins with minor aggression, moves on to physical fighting, and then to violence (Loeber & Farrington, 2000). Behaviors during toddlerhood may be more malleable than later in childhood (Reid, 1994). To better understand what predicts children’s early aggressive behavior we examined the role of parenting behaviors, parent mental health, and child characteristics in a sample of toddlers. Sixty-five mothers and their toddlers between the ages of 17 and 24 months (60% female) participated in the study. Mother-child dyads were videotaped during teaching and clean-up tasks. Mothers also responded to several questionnaires to assess toddlers’ social-emotional behaviors, language development, attachment security, and temperament and their own parenting stress and depression. The teaching and clean-up tasks were coded for maternal language supporting behaviors such as asking questions and providing praise, directives, expansions, and labeling. We examined the correlations between the independent maternal (depression, parenting stress, and language supporting behaviors) and child (age, gender, language development, temperament, and attachment security) variables and the dependent variable of aggression/defiance. Correlations between attachment security (r = -.28, p =.03) and maternal directives during the teaching task (r = .33, p =.01) and during the clean-up task (r = .39, p =.00) showed statistical significance. We included these variables in a regression model and found that attachment security and maternal directives during the teaching and clean-up tasks accounted for 29% of the variance in maternal reports of toddlers’ aggression and defiance. These results suggest that toddlers with greater attachment security and with mothers who use fewer directives in everyday tasks are rated as less aggressive and defiant than those with less attachment security and with mothers who use more directives. The full regression model and early intervention implications will be presented.

Kelsea Hill, Utah Valley University Social and Behavioral Sciences Sexuality has long been identified as foundational in the lives of married couples. An area lacking in research, however, is the transition into sexuality made by couples who practiced abstinence prior to being married. The data for this study comes from a survey of 597 respondents that had practiced abstinence before being married. This focuses on the qualitative responses to questions asked abstinent couples about what helped make the transition into sexual intimacy, what purpose(s) sex has in their relationship, what they wished they had discussed prior to having sex, and what challenges they experienced in the transition into sexual intimacy.

Jared Glenn, Utah State University Social and Behavioral Sciences Previous research shows that girls and women tend to prefer and perform better in classes taught by women. However, much less research analyzes the impact of instructor gender on learning outcomes among boys and men. This research fills that gap by analyzing the effect of professor gender on male college students’ achievement. Relying on survey and in-depth interviews among undergraduate men at a large research university, this study finds no significant empirical data that professor gender significantly impacts men’s academic achievement, in contrast to previous findings among girls and women. Interview findings, however, suggest that men prefer the tough grading, which they indicate is integral in male-taught classes. The study contributes to our understanding of gender differences in an academic setting and how that factor shapes learning outcomes and achievement.

Briana Bowen, Utah State University Social and Behavioral Sciences The U.S. Secret Service (USSS), one of the most elite security agencies in the world, is charged with protecting the President of the United States at any cost. Three American presidents fell to assassins’ bullets before the USSS was assigned the role of presidential protection; one more would later be slain despite USSS protection. This study examines the organizational culture of the USSS, employing the methodology of cultural topography to identify the agency’s norms, values, identity, and perceptual lens. We review three of the most impactful twentieth-century assassination attempts––two failed, one successful––and their formative effect on USSS organizational culture. Beginning with the lesser-known plot to assassinate Harry Truman, we examine the permanent authorization of the Presidential Protective Division. We apply our main focus to the assassination of John Kennedy, the USSS’s darkest hour and still its most powerful motivator. Lastly, we review the attack on Ronald Reagan and the development of the modern USSS security apparatus. Our final profile of USSS organizational culture gives insight into the agency’s strengths and weaknesses and informs our concluding recommendations for institutional change.

Yonic Michaca, Utah Valley University Physical Sciences It is well known that some of the worst air pollution in the country each winter is found along the Wasatch front in northern Utah. This study examines the effects of environmental pollutants on the production of the novel compounds produced by the endophytes found in Rumex crispus. The Rumex crispus plant was selected due to its natural medicinal uses. It is anticipated that environmental pollutants have an effect on the production of bioactive compounds in order to protect their plant host from foreign pathogens. The theory is that the more stressful environment a plant lives in, i.e. desert climates, high altitude, and man-induced stresses such as pollution, the more bioactive compounds the endophytes produce as a response to protect their plant host. This study analyzes the effects of environmental pollutants along the Wasatch front on the production of novel bioactive compounds produced by the endophytes found in Rumex crispus. Plant samples are also collected from sites near the Wasatch front, but they are not exposed to the same amount of air pollution to be used as a control.

Ting Ruan, University of Utah Physical Sciences Cardiovascular complications are more prevalent in patients with diet-induced obesity and type 2 diabetes. Both of these conditions are associated with elevated levels of free fatty acids (FFAs). Elevated FFAs might precipitate cardiovascular complications by disrupting endothelial nitric oxide (NO) synthase (eNOS) enzyme function. The physiologically abundant saturated FFA palmitate decreases eNOS phosphorylation at serine 1177 (p-eNOS S1177) in a ceramide and protein-phosphatase 2A (PP2A) -dependent manner. p-eNOS S1177 is a positive regulatory site on the eNOS enzyme. As such, p-eNOS S1177 to total eNOS can be used as an estimate of eNOS enzyme function. We sought to determine the extent to which two other phosphatases that are abundant in the cytosol i.e., protein phosphatase 1 (PP1) and protein phosphatase 2B (PP2B) might contribute to palmitate-induced reductions in p-eNOS S1177 to total eNOS. Bovine aortic endothelial cells (BAECs) were treated for 3 hours with 500 uM palmitate or vehicle in the absence and presence of the PP1 inhibitor tautomycin (3 uM). p-eNOS S1177 to total eNOS was assessed using immunoblotting procedures. Palmitate-induced reductions (30±3%, p<0.05, n=3) in p-eNOS to total eNOS were similar in the absence and presence of tautomycin. These data indicate that PP1 does not contribute to palmitate-induced disruption of eNOS enzyme function. Next, BAECs were treated for 3 hours with 500 uM palmitate or vehicle in the absence and presence of the PP2B inhibitor cyclosporine (100nM). Palmitate-induced reductions (31±4%, p<0.05, n=3) in p-eNOS to total eNOS were similar in the absence and presence of cyclosporine. Taken together, these data suggest that neither PP1 nor PP2B contribute to palmitate-induced reductions in p-eNOS S1177 to total eNOS.

Kip Brower, Utah Valley University Physical Sciences Juniperus osteoperma has been reported to exhibit beneficial pharmacological activity against symptoms of diabetes, as a traditional treatment for kidney ailment and the essential oil of juniper berries has also been subject to investigation for antioxidant activities. Endophytes, particularly endophytic fungi, have produced numerous novel bioactive compounds, several of which are currently used as antifungal, anti-bacterial, and anti-cancer agents in organisms other than their plant hosts. This investigation looks into the possibility of endophytic fungi being a means of producing compounds that may be a functioning agent in antioxidant, antifungal, or hyper/hypoglycemic activities of Juniperus osteoperma. The investigation involves samples of Juniperus osteoperma collected from multiple different locations within Utah, and isolates the resident endophytic fungi.

Stephen Erickson, Brigham Young University Physical Sciences “The spherical protein ferritin has often been used to fabricate nanoparticles of various shapes and compositions with its walls. Ferritin occurs naturally with a ferrihydrite (FeOOH) mineral core, but it has also been used to synthesize nanoparticles of several other semiconductors. While the methods for creating these nanoparticles within ferritin are well established, the characterization of such nanoparticles is not. Previous studies on native ferrihydrite core ferritin disagree on the band gap, giving values anywhere from 1.1-3.5 eV, depending on the method. We have used absorption spectroscopy to measure these band gaps with an unprecedented accuracy of up to .01 eV. This method also allowed us to determine that ferrihydrite nanoparticles are indirect gap semiconductors. By employing this method on particles of various sizes, we have shown the effects of quantum confinement, resulting in variations in the band gap. We also provided the first ever direct evidence that ferritin works to crystalize its core with time, an effect that has long been theorized but never observed. By characterizing the effect of size and time on nanoparticle band gap, we have shown the potential for selectively tuning that gap. This opens up a world of possible applications in light harvesting and photo detectors. By controlling the band gap, we will be able to select which wavelengths of light are absorbed, allowing for full spectrum photovoltaic cells and wavelength specific optical detectors. Future studies will focus on nanoparticles of other metal hydroxides and various anion replacements to further expand our tunable range of band gaps.

Byron Millet, Weber State University Physical Sciences The relative solvolysis rates of norbornenyl derivatives have been of interest. To date, only one other norbornenyl compound has been found that solvolyzes slower than anti-7-norbornene. It has been suggested that through-space interactions between π-bonds plays a significant role in stabilizing the carbocations. However, through-space interactions do not account for the similar observed solvolysis rates of nearly identical compounds both with and without adjacent π-bonds. Studies have shown that the stability of these compounds is significantly affected by σ-bond interactions. We report on our current computational study of the relative energies of several norbornenyl compounds with and without adjacent π-bonds to evaluate both π-bond and σ-bond effects on the stability of the norbornenyl cations. The effect of a ketone functional group on the relative stability of the carbocation is also analyzed. The literature solvolysis rates of the various norbornenyl derivatives and the stability of their respective cations is compared. With some exceptions, a correlation was found between the stability of a derivative’s carbocation and its respective rate of solvolysis.

Nicholas Labrum, Utah State University Physical Sciences Increasing concerns on the anthropogenic climate change, rising global energy demands, and diminishing fossil fuels have urged the search of alternative carbon-neutral and sustainable energy resources, among which solar energy stands out as the most promising target since it is the largest exploitable resource. However, its nature of diurnal variation, intermittence, and unequal distribution requires efficient and cost-effective capture, conversion, and storage. Generation of chemical fuels, such as hydrogen, from solar energy input represents an appealing approach to meet this goal. An ideal scheme would tap hydrogen from the splitting of water with concomitant evolution of oxygen. Due to the nature of the four-proton and four-electron process, water oxidation is the bottle neck of the overall water splitting process. Nature catalyzes water oxidation using an oxygen evolving complex (OEC) in photosystem II. This project aims at mimicking the OEC to prepare and investigate bimetallic Mn-Ca catalysts for water oxidation catalysis. Calcium has been reported to be critical in water oxidation by OEC, however its functional role has not been well studied. By positioning a calcium atom in the second coordination sphere of manganese in molecular scaffolds, we are able to systematically study the functional role of calcium at the molecular level. Our project will prompt the development of water oxidation catalysis and benefit artificial photosynthesis at large.

Jeremiah Rundall, Utah Valley University Physical Sciences Utah Valley University has a long-term program of groundwater development in the Trans-Mexican Volcanic Belt in the state of Guanajuato, Mexico, in cooperation with Choice Humanitarian. Thus far, we have drilled a successful 50-m well in basalt and an unsuccessful 22-m well in rhyolite. Well sites have been chosen based on spring locations and fracture traces (linear features as seen on aerial photos). The objective of this study is to measure and model the geoelectric and magnetic characteristics of fracture traces as a means of determining which fracture traces are most indicative of actual fractured rock. Thus far, studies have been carried out on 20 fracture traces in rhyolite in the Trans-Mexican Volcanic Belt, six fracture traces in rhyolite/diorite/monzonite of the La Sal Intrusives in the La Sal Mountains of Utah, and one fracture trace in rhyolite of the Soldiers Pass Formation west of Utah Lake. The total magnetic field has been measured at about 1-m spacing along profiles perpendicular to fracture traces using the Geometrics G-856 Proton Precession Magnetometer. Geoelectric soundings for resistivity, chargeability and self-potential have been carried out both on and off fracture traces using the Iris Instruments Syscal Junior Resistivity Meter with the Schlumberger array parallel to the fracture trace at spacings in the range AB/2 = 2.29-137 m. Geoelectric profiles have been carried out perpendicular to fracture traces (array parallel to the fracture trace) at spacings AB/2 = 15.2 m and 137 m. Geoelectric and magnetic modeling is being carried out using the 1X2D-GM Magnetic Interpretation Software and the 1X1D Sounding Inversion Software. Preliminary results indicate that some fracture traces are associated with both magnetic and electrical resistivity lows consistent with intermediate depth (~ 50 m) fractured rock, although not all fracture traces have these characteristics. Further results will be reported at the meeting.

Greg Carling, Brigham Young University Physical Sciences Wyoming the second most glaciated state in the lower 48 United States has seen drastic changes in the size of its glaciers. Glaciers in high elevation ecosystems of Grand Teton National Park are not anywhere near to the size that they were 100 years ago. The glaciers continue to decrease in size every day. As the environment changes the glaciers change in size and can be affected by many factors in the environment. Deposition of particulate matter from the atmosphere into the glaciers occurs as pollution is becoming worse and more common. Studies done throughout the world have shown that glaciers can act as a source for mercury and other trace metal elements in high elevation ecosystems. Through the assistance of the UW-NPS Research Station Dr. Greg Carling of BYU and his team of graduate and undergraduate assistants retrieved 100 glacial melt water samples from the Middle Teton, and Teepee Glaciers and stream sites in Garnet Canyon, and from the Teton Glacier in the Glacier Gulch area. In the data analysis completed up until this point, concentrations of various trace elements have found in sample sites in close proximity to the Middle and Teton glaciers on the glacial moraine. We hypothesize that these glaciers act as a source for mercury and trace elements that can then be transported to lower elevation ecosystems within the Greater Yellowstone Ecosystem.

Christopher Clements, Utah Valley University Physical Sciences DWR operates the Springville Fish Hatchery raises rainbow trout for stocking lakes and ponds. Since February 2011 the hatchery has observed excessive physical activity among the trout, including jumping out of raceways onto the concrete walkways. Excessive physical activity can result from free carbon dioxide levels above 10 ppm and free carbon dioxide levels in the hatchery water have been measured as high as 17 ppm. They have added some treatment processes before it enters the hatchery and greatly reduced the food intake of the trout, which increase costs and reduce production. This has reduced free carbon dioxide levels to only 15 ppm. The objective of this study is to determine the source of elevated free carbon dioxide and recommend solutions for the problem. The water source for the hatchery is a shallow pond, which is fed by 16 springs, both warm and cold. The objective is being addressed by measuring discharge from each spring and collecting water samples for measurement of free carbon dioxide in addition to other common stressors of rainbow trout. Free carbon dioxide, temperature, pH, electrical conductivity and dissolved oxygen are being measured on-site, while hardness, nitrite, ammonia, copper, iron and zinc are being measured. Free carbon dioxide levels at some warm springs have been measured as high as 25 ppm. Mixing calculations will be carried out to determine whether the discharge and water quality of each spring is consistent with the water quality currently entering the hatchery and whether the removal of one or more springs would result in sufficient water within the acceptable ranges for rainbow trout. If calculations estimate free carbon dioxide significantly lower than the measured free carbon dioxide in the water entering the hatchery, it is possible that additional elevated free carbon dioxide results from the decay of organic matter.

Brandon B Davis, Utah Valley University Physical Sciences A recent study (Ferreira 2013) examined concentrations of fluvial As and transition metals associated with As in Provo and American Fork Rivers, which flow westward across the Wasatch Range and drain into Utah Lake. Within Utah Valley average fluvial As for Provo River (As= 0.342 mg/L) and American Fork River (As= 0.152 mg/L) exceeded the EPA standards for freshwater streams for acute exposure (As= 0.340 mg/L) and chronic exposure (As = 0.150 mg/L), respectively. The objective of this study is to determine whether elevated levels of As and other heavy metals also occur in shallow groundwater in Utah Valley. The objective is being addressed by analyzing water samples from the “backyard wells” in Utah Valley, shallow (depths < 10 m), hand-dug wells which many residents maintain as their "emergency water supply" or for small scale agriculture. Since nearly all backyard wells are unregistered, they are being sought through conversations with water departments, real estate listings and local residents. Water and sediment samples are also being collected from American Fork River, Hobble Creek, Provo River and Spanish Fork River, which drain into Utah Lake. Samples are being analyzed for nitrate, phosphate and sulfate using the Hach DR-2700 Spectrophotometer, while the PerkinElmer Optima 8000 ICP-OES is being used to measure for As, the transition elements Co, Cu, Cr, Fe, Mn, Ni and Zn, and other associated elements Ag, Cd, Pb and Ti. Preliminary results indicate that shallow groundwater As in the American Fork watershed is much lower (mean As= 0.0022 mg/L) than fluvial As and an excellent negative correlation (R2 = 0.83) between groundwater As and Ti. It is suggested that TiO2, which may originate in the Cottonwood Stock in the American Fork watershed, may play a role in the demobilization of groundwater As. Further results will be reported at the meeting.

Joshua Wallace, University of Utah Physical Sciences We study the effect of the circum-galactic gas environment on the observed Lyman-alpha emission from Lyman-alpha emitting galaxies. These galaxies are primarily high-redshift star-forming galaxies that are important in understanding both galaxy and universe evolution. The Lyman-alpha photons emitted from these galaxies should hold valuable clues about the general environmental properties (such as gas velocity, density, and distribution) around galaxies, since the photons can be strongly affected and scattered by the neutral hydrogen atoms that make up the majority of the gas. However, explaining exactly how a galaxy’s environment affects its Lyman-alpha emission is very complex and currently cannot be predicted with complete certainty — every time a Lyman-alpha photon interacts with a hydrogen atom, its direction and frequency are changed, which in turn affects how far it will travel before the next interaction. We study the environmental effects on Lyman-alpha emission properties by applying Monte Carlo Lyman-alpha radiative transfer modeling to simple analytic models and find an important role of the anisotropic distribution of gas in determining the observed photometric and spectral properties of Lyman-alpha emission. We further perform a detailed investigation by applying the radiative transfer modeling to realistic star-forming galaxies in high-resolution cosmological galaxy formation simulation. From our analysis so far, we find the Lyman-alpha emission from the models shows a strong dependence on viewing angle, as well as correlations between observed spectral features and environmental conditions. We plan to model and analyze a large sample of simulated galaxies to better describe and statistically quantify the above dependence and correlations. Our study will lead to a better understanding of the effects galaxy environment on the observed Lyman-alpha emission and in turn provide a theoretical guide on how to use observed Lyman-alpha emission to learn about the environments of star-forming galaxies and hence galaxy formation and evolution.

Tyler Jones, Brigham Young University Physical Science This project takes advantage of an inexpensive integrated circuit to create a wavelength meter. The circuit has an array of photodiodes, each of which has an optical filter of a different color. The filters cause each diode to respond differently to different wavelengths of light. The relative amplitudes of the signals are then used to compute a wavelength based on known responses for various wavelengths recorded in a calibration stage. The project focuses on improving precision of the hardware and developing an algorithm to do the computation.

Stephen Ruegg, University of Utah Physical Sciences The Black Peaks Formation (BPF) from the Tornillo Group in Big Bend National Park (BBNP) is comprised of a series of stacked paleosols and sandstone channels deposited by a fluvial system in a sub-tropical intramountain basin during the Laramide orogeny. Paleosols constituting the BPF display alternating drainage and development conditions. The BPF is bounded by the Late Cretaceous Javelina Formation and the Early Eocene Canoe Formation and is therefore thought to be of Paleocene age (65.5-55.8 million years ago). The BPF is an interesting target for paleoenvironmental reconstruction because little data have been generated from the Paleocene for sub-tropical regions, limiting the validation of global climate model predictions in these regions. However, previous attempts to resolve the age of the formation using biostratigraphy, magnetostratigraphy and chemostratigraphy gave ambiguous results limiting the potential of the BPF for paleoenvironmental reconstruction. We analyzed the carbon isotope ratio (δ13C ) of carbonate nodules collected from pedologically distinct paleosols throughout the BPF. δ13C of carbonates nodules found in reduced black paleosols are systematically 3-4‰ lower than δ13C from non-black paleosols from neighboring stratigraphic intervals. We hypothesize that this isotopic difference is related to the lower contribution of atmospheric CO2 to soil CO2 in water-logged and/or poorly drained black soils. Large-scale stratigraphic patterns of carbon isotope variations in carbonate nodules from non-black paleosols throughout the BPF strongly resemble well-documented secular changes in δ13C values of marine carbonates for the Paleocene. Several recognizable features are present in both curves, including the Paleocene Carbon Isotope Maximum (PCMI) and possibly the Late Danian carbon isotope excursion (LDE). These features provide a new basis for correlation of the BPF to the global geological timescale, and suggest that the Formation preserves a 6 million year record of deposition and paleoenvironmental conditions spanning the majority of Paleocene time (63-57 million years ago).

Christopher Mansfield, Westminster College Physical Science The method currently used to measure monomethylmercury (MMHg) in natural waters involves a lengthy distillation step in order to remove certain ions and dissolved organic matter that have been reported to interfere with the subsequent reaction in which MMHg is ethylated. It has recently been reported that the analysis of MMHg in seawater by direct ethylation was successfully carried out, thus removing the day-long distillation. However, the effect of many potential interfering ions and compounds on this method have not been characterized, and it has not been tested for use in natural freshwaters or the hypersaline waters of the Great Salt Lake. Thus, these became the two goals of this project. We found that optimal ethylation conditions included buffering samples to pH 4.0-4.1, reducing the amount of sodium tetraethylborate, adding EDTA to complex interfering trace metals, and adding chloride to overcome interferences by thiols and organic matter. We have since employed this improved method to analyze MMHg in natural water samples from fresh and saline lakes, achieving > 90% MMHg spike recoveries without the use of distillation.

Jasmine K Bishop, University of Utah Physical Sciences In my presentation, I will discuss the method of creating insulating gaskets for high pressure experiments using diamond anvil cells. In standard diamond anvil cell pressure experiments, metal gaskets are typically employed. However, in order to study the electric and magnetic properties of a sample without worrying about interference of the metal gasket itself, insulating gaskets are used. The insulating material needs to be ductile and yet hard enough to maintain a certain level of structure. Epoxy is ideal for ductility but is not hard enough to maintain a diamond indent under pressures generated by diamond anvil cells. When mixed with a diamond powder however, the mixture is both ductile and structurally sound. In this study we have modified the previous methods of insulating gasket preparation by addition of a metal sheet to increase the strength and ductility of the gasket. The part of the gasket that is metal can be used as an electrical lead to measure sample’s conductivity. In this design the mixture of diamond and epoxy is applied to a thin 100 micrometer metal sheet and a focused beam of high power IR laser is used to drill a hole in the gasket . I will describe the design of the optical path and the details of the gasket preparation and will present some of the gaskets that I have made.

Stephanie Bartlett, Utah Valley University Physical Sciences Ephemeroptera, commonly referred to as mayflies, are found throughout the world. Within the order of Ephemeroptera resides a superfamily, Ephemeridea, commonly called burrowing mayflies. This common name was acquired due to certain physical and behavior characteristics present as nymphs. Ephemeridea nymphs live in the silt of aquatic environments and have adaptations for burrowing which include strong legs, as well as mandibular tusks. One exception to this is the family Behningiidae, which burrow, but lack the commonly associated mandibular tusks. Morphological data supported Behningiidae as sister to the other tusked burrowing mayflies, indicating that first burrowing behavior evolved and was later followed by the development of tusks(McCafferty; 1975 and 2004). While morphological data provides important insights into the evolution and phylogeny of mayflies, the development of molecular phylogenetics offers new contributions when determining evolutionary relationships within this superfamily. Objective: The purpose of this study is to investigate the relationships of the families of burrowing mayflies in order to test the hypothesis of tusk evolution. Methods: The specimens were acquired from collection efforts and colleagues. For each specimen the following laboratory procedures were carried out: DNA extraction, gene amplification via polymerase chain reaction, visualization via gel electrophoresis, and DNA sequencing. The genes targeted for sequencing included 12S mitochondrial rDNA, 16S mitochondrial rDNA, 18S nuclear rDNA, 28S nuclear rDNA, H3 nuclear protein coding, and CO1 mitochondrial protein coding. Data was also acquired from Genbank in order to augment missing data. Taxon sampling consisted of around 20 ingroup and 5outgroup taxa. Phylogenetic relationships were estimated using Maximum Parsimony, Maximum Likelihood, and Baysian methods. Conclusion: The families Behningiidae, Potamanthidae, Palingeniidae were supported as monophyletic. Behningiidae nested well within the other burrowing families. Hence, tusks evolved and were subsequently lost in the family Behningiidae even though it retained the burrowing lifestyle in the nymph.

Brielle Woolsey, Brigham Young University Physical Sciences A method of forming zinc oxide (ZnO) single crystal hexagonal prisms is derived from a standard sol-gel method. The new synthesis requires water, zinc acetate, and diethanol amine (DEA) to create a zinc hydroxide/zinc hydroxide acetate gel, which forms single crystal hexagonal prisms upon heating. Characterization of the gel was done by XRD as well as by XRD high temperature chamber (HTK) to determine the role of temperature in prism formation. SEM images showed hexagonal prisms were of uniform size (approx. 0.5 — 2 µm). TEM and electron diffraction images showed a change from randomly oriented particles to an ordered single crystal after heating. Ethanol amines, heating of the gel, and the zinc acetate salt proved to be critical to prism formation.

Mattie Jones, Dixie State University Physical Sciences New methods aimed at forensic analysis of sensitive, minute samples are critical to the intelligence community. In particular, successful extraction of dyes from materials found at crime scenes will provide innumerable benefits for matching, identifying, and finding origins of these materials and dyes. Current methods of isolating components of samples by their unique chemical properties are lengthy and often destroy important forensic evidence. Ionic liquids possess the necessary chemical properties to ensure efficient extractions, while maintaining the forensic signatures of the original materials. They also provide a one-pot approach that avoids intermediate species and increases analyte yield while extracting and separating constituents in a more efficient manner. By combining traceable dyes with an ionic liquid, the versatility of single-component extraction-separation-identification was demonstrated. Analysis using absorption and fluorescence spectroscopy validated complete extraction and recovery of trace analytes. Following extraction and isolation, identification by infrared spectroscopy has provided evidence of preserved quality and complete separation of material and dye. This novel approach to forensic analysis is advantageous particularly when sample sizes are extremely limited, but it can be readily scaled to larger applications. Developing a simple and affordable method of achieving specific molecular interactions provides a solution for often unidentifiable evidence in crimes. Harnessing the versatility of ionic liquids in a high-yielding recovery and efficient single-pot methods will enhance forensic abilities for the intelligence community and forensic investigators.

Kim Nielsen, Utah Valley University Physical Sciences Infrared Thermography (IRT) has become popular in the medical field for various applications and procedures. One such application involves the use of IRT in the active detection of skin lesions and neoplasms. More specifically, medical professionals are using IRT as a non-invasive method for the early detection of harmful lesions, such as melanoma.

Adam Kingsley, Brigham Young University Physical Sciences In the construction of various sensors in the lab, highly accurate integration times are required. It is advantageous to have a precise external timer to run the circuitry contained in the sensor. By taking a signal in the range of megahertz down to hertz or milihertz range, it is possible to control the start and stop times for circuits. Overall this means that every time a measurement is taken it represents the same length of time.

Lucas Lloyd, Utah Valley University Physical Sciences The high cost of air quality monitoring stations makes it difficult for citizens or local governments to monitor air quality in their own neighborhoods. For example, Utah County, Utah, with an area of 2141 mi2, has only four air-quality monitoring stations: (1) north Provo close to both Provo High School and Brigham Young University (2) Spanish Fork Airport (3) near State Street in Lindon (4) just south of SR-92 on 6000 W in Highland. The air-quality stations monitor levels of CO, NO2, O3, PM-2.5 (particulate matter smaller than 2.5 microns), and PM-10. The objective of this study is to find a much cheaper method of measuring air quality. The objective was addressed by measuring the magnetic susceptibilities of 10 replicates each of the leaves of 12 species of trees (cypress, crab apple, elm, flowering pear, green ash, honey locust, linden, Norway maple, pine, red maple, Russian olive, spruce) collected within a two-mile radius of each of the four air-quality monitoring stations in Utah County. After air-drying and crushing the samples, both low-frequency (0.46 kHz) and high-frequency (4.6 kHz) magnetic susceptibilities were measured with the Bartington MS3 Magnetic Susceptibility Meter. The best correlations between tree leaf magnetic susceptibilities and air-quality parameters were between the three-year average of PM-2.5 and the high-frequency magnetic susceptibility of leaves of pine (Pinus aristata) (R2 = 0.87) and Norway maple (Acer platanoides) (R2 = 0.86). The correlation was used with measured high-frequency magnetic susceptibilities of pine to estimate PM-2.5 in two unmonitored locations heavily impacted by highway traffic (corner of 800 N and I-15 and corner of University Parkway and I-15, both in Orem, Utah) on one day in August 2013. It was found that estimated levels of PM-2.5 were 9.5 µg/cm3 and 8.9 µg/cm3, respectively, which were within the EPA PM-2.5 Standard of 12.0 µg/cm3.

Frederickk Sudbury, University of Utah Physical Sciences Triphenylphosphine stabilized gold nanoparticles were synthesized using a method developed previously by the Jennifer Shumaker-Parry group. Aminated silica colloids were obtained from the Ilya Zharov group. The gold nanoparticles were adhered to the silica colloids using a method developed for another purpose by the Zharov group. The presence of the particles on the silica colloids was confirmed using both scanning and transmission electron microscopy. The catalytic activity of the gold nanoparticles both with and without adhesion was investigated. It was found that free nanoparticles had significant catalytic activity, in agreement with previous research. Gold nanoparticles attached to silica colloids do not seem to exhibit the same level of catalytic activity as the free particles. It was also found that not all the gold nanoparticles adhered to the surface of the silica particles. Experiments were conducted to determine if there was a critical concentration of silica colloids that would allow for high levels of adhesion of the gold nanoparticles. It was found that only by adding a significant excess of silica colloids to the solution can all the gold nanoparticles be removed from the solution. It was also found that the silica can be saturated with gold nanoparticles by including a small amount of them in a very concentrated gold nanoparticle solution. Further studies for functionalization of the silica colloids and the ability to physically isolate the silica with gold nanoparticles from free nanoparticles are currently in progress.

Benjamin Pound, Utah State University Physical Sciences Carbon Nanotube (CNT) Forests are vertically grown carbon nanotubes. They can be as tall as millimeters, with radii from less than one nanometer (single-walled) to tens of nanometers (multi-walled). Their high surface area to volume ratio provides a unique material system for biosensor applications. However, the CNT surface does not provide covalent bonding sites to many antibodies of interest. One approach is to attach linker molecules with aromatic rings via π-stacking to the CNT surface and activating the linker molecules to bind covalently to specific antibody molecules. Unfortunately, the conventional solution-based functionalization approach often leads to collapse of the CNT forest and hence a significant loss of binding sites. In this presentation we demonstrate that CNTs can be lithographically defined to form various structures that are resistant to liquid-induced collapse. We show that the CNT forest can be functionalized with 1,5-diaminonaphthalene as a linker molecule and its coverage can be characterized by fluorescence spectroscopy.

Alexandra Kent, University of Utah Physical Sciences Prescription drug overdose and abuse is a leading cause of death in the United States. It is a serious issue and has become increasingly problematic as opioids are being prescribed at a higher frequency. For this reason, fast, accurate detection of small drug molecules is crucial. The current standard for use in clinical drug detection is an enzyme-linked immunosorbent assay (ELISA) that uses a series of antibodies to bind to the target drug and enable quantification via a colorimetric output. However, the antibodies used in an ELISA often cannot distinguish between similar molecules. Aptamers are short sequences of DNA that have emerged as a promising alternative to antibodies, as they are generated in vitro, where negative selections can be used to increase target selectivity. These aptamers can be cleaved to make split aptamers that only assemble in the presence of the target small molecule. One inherent problem of this system is the need for split aptamers that are selective for their small molecule targets. While there are many known aptamers, there are only a few known split aptamers that bind small molecules. Separating aptamers with a privileged, three-way-junction structure provides a reliable method to generate new split aptamers.

Jazmin Myres, Brigham Young University Physical Sciences In scan-based array measurements, stationary reference sensors are needed to temporally correlate the different measurement scans and produce coherent complex pressure fields. Because the number of references required increases with the number of subsources contributing to the sound field, an extended, partially correlated source comprising many ill-defined sources can result in significantly increased measurement complexity. A different approach to creating spatiotemporally coherent pressures is demonstrated here. Scan based measurements of a partially coherent line source have been taken in an anechoic chamber. This experimental data has been used to explore “stitching” together a complex pressure field by spatially overlapping measurement scans instead of using separate reference channels. Various methods of stitching have been explored and the most robust method identified. Unwrapping of intrascan phases is first accomplished with a two-dimensional phase unwrapping algorithm. Individual scan positions are then stitched together using median phase differences between multiple adjacent scans to create coherent planes of data. Amplitude-stitching is done by averaging across scans and preserving the integrated squared pressure across the overall aperture. This method has been verified using reference microphones. This stitching method has been applied to scan based measurements of a military aircraft, exhibiting its effectiveness dealing with a partially correlated complicated source. This method works well for low-frequency jet data, where there is not a ground-based interference null creating a physical phase discontinuity. This technique provides direction for efficient experimental design for scan-based array measurements of extended sources. [Work sponsored by ONR.]

Buchanan Kerswell, Utah Valley University Physical Sciences This project is designed to investigate anthropogenic impacts on the geochemistry and physical characteristics of Utah Lake-Jordan River transition zone, in Utah Valley, Utah. The zone has experienced dramatic, multifaceted shifts since European settlement in 1847, especially in recent decades. Our chosen study location is uniquely situated to capture changes recorded in the sediment cores due to land use, nutrient enrichment, vegetation shifts and river dynamics since pre-settlement.

Phillip Lundgreen, Utah State University Physical Sciences By developing a low-noise, high-voltage battery power supply, system noise has been reduced, increasing accuracy of conductivity measurements of highly disordered insulating materials. The method involves a simple parallel plate capacitor setup with the sample sandwiched between electrodes, a voltage potential applied to one electrode, and a measurement device applied to the back electrode measuring current. Previous methods involved use of a commercial power supply with a claimed low noise and high linearity, but with a low AC output ripple. At high voltages (1000 V), however, the noise became apparent in the readings and an unacceptable uncertainty was introduced in our precision conductivity measurements. Through the use of a stable dc battery high-voltage power supply, we were able to reduce noise in current measurements and achieve a more accurate measurement of conductivity for various samples.

Nathaniel Wells, Utah Valley University Physical Sciences Previous research with bottle-shaped thermoacoustic prime movers has revealed hysteresis with transitions to higher modes as the cavity length is varied. A string with an abrupt change in mass density was studied to investigate potentially similar behavior. Three base guitar strings were studied at three different tensions with weights of 25, 30, and 35 lbs. Each string consisted of a “thin side” that was stripped to the stainless steel core and a “thick side” with an outer wrapping of nickel around the core. The strings studied had diameters of 0.65, 0.45, and 0.50 mm on the thin side and 2.14, 1.31, and 1.24 mm on the thick side, respectively. An anchor was attached on one end of a short board with a pulley at the other for hanging the weight. The end of the thick side of the string was attached to the anchor, and the string was guided over the pulley, with the change in mass density occurring approximately 12 cm from the pulley. Measurements were taken after placing a glass jar under the thick end of the string, between 42 cm and the position of the change in mass density, in 3-cm steps. The string was plucked and the dominant frequency was recorded with a microphone at each location. Frequency data is generally consistent with a solution to a 1D wave equation. Preliminary results indicate mode transitions occurring for all strings, with several hysteresis region candidates.

Zachary Anderson, Brigham Young University Physical Sciences Correlation analysis is useful in extracting spatiotemporal relationships between signals and can be used to examine features of near-field jet noise for source properties. Characteristic correlation envelopes determined by Harker et al. [JASA 133, EL458 (2013)] can be used to relate correlation lengths to fine and large-scale turbulent structures. As an extension, cross-correlation shows spatial variation in jet noise and further reveals the transition between short (fine-scale) and long (large-scale) correlation lengths. These analyses are applied to a military jet dataset of a ground based linear microphone array positioned 11.6 m from the jet axis. Correlation analyses over multiple engine conditions and observation directions are reported. In particular, a maximum correlation coefficient greater than 0.5 exists over a range spanning multiple wavelengths in the region of greatest overall sound pressure level at military power. [Work supported by ONR.]

Ian Sohl, University of Utah Physical Sciences Current software in the High Altitude Water Cherenkov (HAWC) Telescope data collection system only triggers saving of events that pass a specified number of hits and energy. Our analysis of the untriggered (and unsaved) data will identify the number of potentially significant events that are bypassed by the existing software. By the application of a sorting function onto current Monte Carlo generated data, we can categorize incoming events into various types of particles, primarily muons, while also filtering out randomized noise from the photomultiplier tubes used in HAWC. Due to the relatively low rate and energy of the photomultiplier tube noise, many of the significant events for the untriggered set are potential useful particles. Our triggering algorithm, based on the energy, timing and saturation of the tanks is primarily focused on separating muons from the bulk of data. These raw rate data for small events are a relatively unexplored area for HAWC and measurements can be useful for a variety of calibration tasks for the telescope. They can be useful for understanding the impact of the atmosphere on the telescope’s data collection, as well as the triggering of the photomultiplier tubes through secondary sources. This untriggered data can also be used in a variety of useful forms not directly related to HAWC’s primary usage goals, primarily solar physics. Due to the relatively low energy and hit count from solar events, most of the data are thrown away by the triggering algorithm.

Mallory Millington, University of Utah Physical Sciences Groundwater in the western United States is a limited and important resource for agriculture, industry, and residents alike. Knowing the movement of groundwater is critical to understanding the potential of groundwater contamination from human activities. While groundwater flow is difficult to quantify, it typically recharges in high elevation and discharges towards lower elevation. The first commercially-approved tar sands mine in eastern Utah is located on a ridgetop in the PR Spring area within the high plateaus on the south rim of the Uinta Basin. To evaluate the potential of groundwater contamination due to tar sands mining a study was conducted to understand groundwater flow in the PR Spring area, specifically the canyon directly south of the tar sands mine called Main Canyon. Water samples were taken from four groundwater springs at elevations ranging from 7040 to 8040 ft in or near Main Canyon. Water quality measurements taken in the field showed that the lower springs exhibited higher conductivity (900 vs. 636 μS/cm) and lower dissolved oxygen (30% vs. 88% saturation) than the higher elevation springs. This suggests that the lower springs have had a greater amount of water-rock interaction and so are chemically more evolved than the springs at higher elevations. SF6 age dating indicated that the high elevation springs are younger than the lower elevation springs, 5.5 vs. 16.0 years since recharge respectively. The field parameters and SF6 age data all indicate that higher elevation springs are younger and less chemically evolved than the water at lower elevations. This indicates that the springs in Main Canyon are sourced from local recharge at the ridgetops. Given these findings the tar sands mine should consider taking preventative measures to protect groundwater resources.

Andrew Fletcher, Utah Valley University Physical Sciences Springville, Utah, is known for its high water table and many freshwater wetlands and springs, which gave rise to the name of the city. Flooding of barns is a common problem among farmers in western Springville, which is just east of Utah Lake. These frequent barn floods are anecdotally linked to high-intensity precipitation events and the common use of flood irrigation. The objective of this study is to determine the cause of barn flooding and to make recommendations for mitigation of barn flooding for individual farmers with whom we are working in this area. The objective is being addressed first by using ArcGIS to determine the watershed of each barn and the NRCS (Natural Resource Conservation Service) Web Soil Survey to map hydrologic soil groups within each watershed. Results from the larger-scale Web Soil Survey will be supplemented with measurements of soil hydraulic conductivity using the SoilMoisture Equipment Model 2800K1 Guelph Permeameter. The above data will be used in the NRCS Curve Number Method to estimate the volume of surface runoff expected in a 100-year 24-hour precipitation event. The objective is also being addressed by installing shallow, hand-augured wells for monitoring the depth to the water table during high-intensity precipitation events and flood irrigation events. The results will be used to develop recommendations for a combination of (1) installation of French drains for diversion of stormwater (2) modification of current irrigation methods (3) pumping and diversion of groundwater. Results and specific recommendations for individual farmers will be presented at the meeting.

Nils Otterstrom, Brigham Young University Physical Sciences Filtered photodiodes show potential as inexpensive laser wavelength meter. Photocurrents are measured digitally. The photocurrent is digitized using externally controlled integration times to achieve the highest precision possible from the digital to analog converters on the photosensor chip. Using an algorithm we’ve developed and calibrated intensity curves, we can precisely calculate wavelength from the output of the different photodiodes. Limitations due to etaloning from reflections off of the surfaces of the filters were analyzed and effectively mitigated, allowing the device to achieve high precision with a stability of 0.102 nm over several hours.

Brittney Thaxton, University of Utah Physical Sciences There are many undocumented shorelines seen in Utah. As many as 30+ shorelines have been identified along the edges of the basin throughout the state. The purpose of this study is to characterize undocumented shorelines and identify potential evidence for tsunamis that might have occurred in Lake Bonneville thousands of years ago in areas such as Little Mountain, Stansbury Island, and Promontory Point, Utah. Lake Bonneville existed 32-10K years ago and was influenced by the Wasatch fault which was active as early as the Miocene. Scarps of this age are common and range between 15-20 feet in height (Machette, Personius, Nelson, Schwartz, Lund 1991; Dinter, Pechman, 2004a and 2004b). Several faults beneath Lake Bonneville could have produced tsunamis. The more water that is displaced the greater the tsunami will become and leave a greater impact onshore (Dutykh and Dias 2009). The East Great Salt Lake fault cuts NS across Bear River Bay east of Promontory Range. This fault line is an excellent candidate for causing a tsunami during the Lake Bonneville highstand because it is beneath the Great Salt Lake meaning it would have uplifted the entire water column of Lake Bonneville and since it is also close to the Promontory Range, it is likely it would leave tsunamite evidence along the shore. The fault rupture interval is between 3,000 and 3,500 years meaning fault ruptures could produce a tsunami during the lake’s high stand. Tsunamite is the term used for deposits related to tsunamis. The tsunamite features found along the shorelines will be similar to sedimentary features such as normally graded sand, mudstone clasts, and other gravel deposits that are out of place with the known shorelines (Shanmugam 2006). This is a unique opportunity to discover ancient tsunami evidence in Utah, a topic that has yet to be pursued.

Tucker Chapman, Brigham Young University Physical Sciences The Provo River provides the opportunity to study three systems from low to high anthropogenic activity. Its headwaters are in an undeveloped area of the Uinta Mountains. The river then moves into a valley that is developing from an agricultural to an urban system. The lower portion of the river moves into the urbanized Utah Valley. These systems give the ability to study the changes in trace element chemistry from a variety of sources. Trace element data were collected during the 2013 water year including the spring snow melt. Correlation was analyzed among the different trace elements using multivariate statistics in order to discover trace element sources. The element loads were calculated using USGS Load Estimator (LOADEST) software. The study has implications involving the drinking water of >2 million people in the Utah and Salt Lake valleys and the changes that the shift from agriculture to urban is causing.

Isaac Allred, Utah State University Physical Sciences We examine the number and location of Class II wells in the central U.S. to constrain future work on the potential for induced seismicity. The EPA, state oil & gas commissions, scientific papers, and media stories frequently state that there are ~140-160 k Class II wells. Excluding California, we expected to find approximately 120 k wells; but instead found ~ 82 k active injectors in the available databases. State datasets vary in accessibility, availability, and content of well data. Lack of digitized well data also limited our online search, and several states require FOIA requests to be filed. State databases with poor searching and sorting functions further complicated data mining, requiring a well-by-well search, and for several states, well locations and injections were difficult to determine. Common discrepancies between EPA well totals and state database totals appear to be due to counting of plugged and abandoned wells, and wells that are permitted but not in use. No data has been retrieved for about 1,600 wells on tribal lands and Indian Country, and several states would not provide “confidential” well data. Of the active injectors, at least 55 k wells inject into producing, pressure-depleting oil and gas formations and are less likely to generate damaging earthquakes. Of the ~ 16 k non-EOR wells, we found 3,400 wells that inject at depths > 1.8 km, where most M > 3.0 midcontinent earthquakes occur. We will present examples of data from several states, that show the locations and depths of injectors, earthquakes, depth to basement, and we will provide an overview of the public file sharing system of the data. We will search for correlations between the depth of injection, the number of injection wells, recent seismic activity, the nature of the subsurface geology, and regional stresses.

Adam Blair, University of Utah Physical Sciences Objectives: Histone covalent modifications influence regulation of gene expression. Changes in histone covalent modifications are triggered by abrupt changes in environment, such as preterm birth followed by mechanical ventilation (MV). Whether histone modifications also occur in the kidney of chronically ventilated preterm lambs is not known. We hypothesized that ventilation of preterm lambs affects histone modification in kidneys.

Ben White, University of Utah Physical Sciences We evaluated the ambient noise wavefield of select arches in the Moab area as a means to assess changes in their structural health over time. Our measurements revealed that the fundamental frequency of vibration at Mesa Arch and Corona Arch are both in the range of 3 Hz, while other spectral peaks are likely related to higher-order vibrational modes. We use numerical modeling for modal analysis in an attempt to predict and visualize the various modes of vibration and their frequency Resonant frequencies are projected to change with snow or rain loading or after a strong earthquake. By monitoring resonant frequencies over time and under various environmental conditions, our goal is to detect reversible and/or irreversible changes that may accompany damage of these arches.