Digital Commons Network^™

Novel Αvβ6 Inhibitor Reduces Fibrotic Progression In Idiopathic Pulmonary Fibrosis Murine Model, Rebecca C. Viazzo Winegar

Theses and Dissertations

Idiopathic pulmonary fibrosis (IPF) is one of the most aggressive and severe interstitial lung diseases (ILDs) for which there is no cure. IPF is characterized by an excessive accumulation of fibroblasts which secrete an abundance of extracellular proteins such as collagen. These processes lead to repetitive tissue scarring and fibrosis in the lung parenchyma. As a result, lungs become rigid limiting oxygen intake and gas exchange. Once diagnosed, IPF is fatal within 2-3 years. There is no known cause or proven treatment that significantly improves outcomes. Although the cause is unknown, the current model of IPF suggests that an overactive …

Stonewalling And Taking A Break Are Not The Same Thing, Emma Todd Carpenter

Family Perspectives

Marriage research has identified stonewalling, or leaving a conversation without any intention of resolving the issue, as unhealthy and damaging. However, experts also identify taking a break, or alleviating pent-up anger by pausing a conversation to be resolved after calming down as beneficial and effective.

The Adaptations Of Immigrant Chinese American Mothers' Parenting With Their Reticent Young Children, Allie Sharp

Family Perspectives

Maternal warmth, or the expression of affection to a child by their mother both physically and emotionally, can play a critical role in encouraging healthy social development among reticent children, meaning children who are less likely to be social with their peers. However, recent research is beginning to recognize that this maternal warmth, which was typically defined as an open expression of affection, may look differently in other cultures. For example, Chinese parenting is generally rooted in Confucian values, which emphasizes group orientation and collectivism, compared to European American societies that typically promote self-expression and individualism. While cultural contexts may …

Mission Language Mix-Ups, Emily Mangum

Final Projects

Return LDS missionaries tell stories about speech faux pas.

Building A Predictive Model For Stratigraphic Transitions And Lateral Facies Changes In The Cretaceous Almond Formation, Wyoming, Joseph E. Phillips

Theses and Dissertations

The Cretaceous Almond Formation, located in the Greater Green River Basin, records deposition of coastal plain fluvial sandstones and shallow marginal-marine sandstones in a net-transgressive sequence along the western margin of the Cretaceous Interior Seaway (CIS) from the late Campanian to early Maastrichtian. The Almond Formation is an important hydrocarbon reservoir, with development mainly along the Wamsutter Arch and the northeast margins of the Washakie Basin. Previous studies have primarily focused on outcrops along the eastern flank of the Rock Springs Uplift and subsurface data targeting the Wamsutter Arch. Further development of the Almond petroleum system requires extending our understanding …

Repetition Of Computer Security Warnings Results In Differential Repetition Suppression Effects As Revealed With Functional Mri, C. Brock Kirwan, Daniel K. Bjornn, Bonnie Brinton Anderson, Anthony Vance, David Eargle, Jeffrey L. Jenkins

Faculty Publications

Computer users are often the last line of defense in computer security. However, with repeated exposures to system messages and computer security warnings, neural and behavioral responses show evidence of habituation. Habituation has been demonstrated at a neural level as repetition suppression where responses are attenuated with subsequent repetitions. In the brain, repetition suppression to visual stimuli has been demonstrated in multiple cortical areas, including the occipital lobe and medial temporal lobe. Prior research into the repetition suppression effect has generally focused on a single repetition and has not examined the pattern of signal suppression with repeated exposures. We used …

Climate Change, Increased Wildfire Frequency, And Rodent-Exclusion Create Opportunities For Exotic Grass Invasion And Alter The Timing And Availability Of Soil Water, Joshua Clark Gilman

Theses and Dissertations

In deserts, global environmental changes, plant community structure, and soil water availability form a complex relationship characterized by direct and indirect relationships and feedbacks. Plant community structure is affected by the establishment and spread of invasive grasses, which form a positive feedback with wildfire. Plant community structure is also controlled by top-down trophic interactions by small-mammals and climate change, which alters the timing and amount of soil water. In deserts, soil water availability mediates the effects of global environmental changes and trophic interactions on plant community structure because it is the limiting resource for plant growth. In order to predict …

My Name Is..., Mikayla Stevens

Final Projects

Stories of how people got their first and middle names.

Designing A Job Aid To Prepare An On-Location Immersive Virtual Expedition (On-Live), Sandra Powell

Instructional Psychology and Technology Graduate Student Projects

Brigham Young University (BYU) Division of Continuing Education (DCE) completed the proof-of-concept phase of an innovation proposal to create On-Location Immersive Virtual Expeditions (on-LIVE) for an online geology course. On-LIVE uses 360-degree video to give students a front-row experience at locations of educational interest. Using Articulate Storyline, this 360-degree view allows viewers to look in all directions and interact with specific parts of the location.

The product is a set of documents including a decision tree to determine if an on-LIVE is valuable for a course, step-by-step instructions for designing the interaction, planning and preparing for the 360-degree video shoot, …

The Impact Of Experiential Virtual Dinosaur Excavation Assignments On Exam Preparation And Performance Inâ An Introductory, University-Level Geology Course, Nicole Elizabeth Ortiz

Theses and Dissertations

Advocates assert that experiential/applicational learning facilitates deep understanding but there is a dearth of empirical research testing the effectiveness of experiential learning in university geology courses. Domack (1999) and Moecher (2004) document applicational assignments within geology courses. These evaluations, however, are based solely on instructor opinion and informal student comments. To evaluate the effectiveness of experiential assignments this study utilizes empirical data from control and test groups in each of two semesters of Geology 100, a general education course on dinosaurs. Control groups completed traditional research papers which were replaced by experiential assignments in the test groups. The first semester …

A Lake Divided: Regional Shifts In Trophic Niche Structure Of Lake Powell Fishes Corresponding To The Invasion Of Quagga Mussels, Nathan Richard St Andre

Theses and Dissertations

Introduced species can become invasive and cause catastrophic alterations to the system they invade. Both zebra mussels (Dreissena polymorpha) and quagga mussels (Dreissena bugensis) have caused significant ecosystem alterations wherever they have invaded. These Dreissena species have caused changes in water quality and biodiversity and have disrupted energy pathways which can have cascading effects on other trophic levels. Recently quagga mussels invaded Lake Powell, a reservoir located in the southwestern USA, creating the possibility of a trophic cascade that could alter energy flow in the reservoir and change the trophic niche structure of the fishes in the lake. However, due …

End Matter, Vol. 12

Monographs of the Western North American Naturalist

No abstract provided.

Front Matter, Vol. 12

Monographs of the Western North American Naturalist

No abstract provided.

Full Issue, Vol. 12

Monographs of the Western North American Naturalist

No abstract provided.

Checklist Of The Vascular Flora Of The Kaibab Plateau, Coconino County, Arizona, Glenn R. Rink, Wendy Hodgson, Barbara Goodrich Phillips

Monographs of the Western North American Naturalist

Seven hundred and ninety-two vascular plant taxa were documented for the Kaibab Plateau through a review of herbarium records (primarily online) and targeted fieldwork focusing on springs, natural ponds, cattle tanks, and sinkholes. Taxa not previously published or currently recorded on SEINet for the Kaibab Plateau include 7 taxa for Grand Canyon National Park, 4 taxa for the Kaibab National Forest, 51 taxa for the Kaibab Plateau, 6 taxa for Coconino County, and 5 taxa for the state of Arizona. Two hundred and thirty previously published records or records on SEINet were eliminated from the flora area by reviewing specimens …

Using Structural Equation Modeling To Model Compliance With Covid-19 Related Non-Pharmaceutical Interventions Amongst University Students In The United States, Spencer G. Shumway, Jonas D. Hopper, Ethan R. Tolman, Daniel G. Ferguson, Gabriella Hubble, David Patterson, Jamie Jensen

ScholarsArchive Data

There are two data files. The "General Data" comes from a nationwide poll using Qualtrics polling software. The "Utah Data" comes from undergraduate biology students at UVU and BYU. The survey gathered demographic data and attitudes toward the COVID pandemic.

The Dynamic Spectroscopic Ellipsometry(Se) Data For Aluminum Thin Films Oxidations, David D. Allred, Tahereh G. Avval

ScholarsArchive Data

The dynamic spectroscopic ellipsometry(SE) data captured on oxidation of ultra thin evaporated aluminum film over starting a few minutes after evaporation and continued for four hours. The Aluminum layer was ca. 15 nm thick. This data needs to be interpreted with J.A. Woollam CompleteEase software. The Aluminum was modeled with Lorentz model and the Alumina was modeled using Cody-Lorentz.

Metabolomics Of Acid Whey Derived From Greek Yogurt, Muriel Mercedes Allen

Theses and Dissertations

Acid whey, a byproduct of Greek yogurt production, has little commercial value due to its low protein content and is also environmentally harmful when disposed of as waste. However, as a product of microbial fermentation, acid whey could be a rich source of beneficial metabolites associated with fermented foods. This study increases understanding of acid whey composition by providing a complete metabolomic profile of acid whey. Commercial and lab-made Greek yogurts, prepared with three different bacterial culture combinations, were evaluated. Samples of unfermented yogurt mix and cultured whey from each batch were analyzed. Ultra-high-performance liquid chromatography/tandem mass spectrometry metabolomics were …

Soil Water Dynamics Within Variable Rate Irrigation Zones Of Winter Wheat, Elisa Anne Woolley

Theses and Dissertations

Understanding the spatial and temporal dynamics of soil water and crop water stress within a field is critical for effective Variable Rate Irrigation (VRI) management. Proper VRI can result in improved protection of the crop from early onset of crop water stress while minimizing runoff and drainage losses. The objectives of this study are (1) to examine zone delineation for informing irrigation recommendations from volumetric water content (VWC) and field capacity (FC) to grow similar or greater wheat yields with less water, (2) evaluate the ability to model soil and crop water dynamics within a season and within a field …

Improving Rangeland Seedling Recruitment Using Fungicide Seed Coatings And Golden Eagle Reproductive Success In Relation To Explosive Military Tests And Trainings, Benjamin William Hoose

Theses and Dissertations

The objective of the first chapter of this thesis was to determine whether fungicide seed coatings constitute an effective strategy for increasing seedling recruitment in restoration scenarios in the Intermountain West. We tested a mixture of four fungicides that address potential fungal pathogens to bluebunch wheatgrass, a dominant bunchgrass that is commonly used in restoration. Across two sites and three years, we found that the fungicide seed coating increased emergence in five of the six sites and years, with an average increase of 59.1% over the control. There was a strong interaction (P < 0.001) between the effects of fungicide treatment, the year and the site on emergence. This interaction was likely related to the effects of the hydrothermal microsite environment on disease severity. Further research is necessary to fully understand the conditions under which fungicide seed coatings are most likely to be effective. The objectives the second chapter of this thesis were to 1) estimate the effects of golden eagle nest proximity to explosive disturbances on reproductive success given other relevant habitat variables (e.g. indices of topography and vegetation), and 2) determine the relative importance of nest proximity to explosive disturbances as a predictor of golden eagle reproductive success compared to other relevant habitat variables. Reproductive success data were collected from nesting territories within and surrounding land controlled and managed by the US Department of Defense. We fit the reproductive survey data using generalized linear mixed-effects models comprised of unique, hypothesis-based sets of habitat variables. We compared the models using AICc-based model selection processes. Given the best approximating model, we found no evidence that the likelihood of reproductive success was affected by nest proximity to explosive disturbances (P = 0.460). We further found nest proximity to explosive disturbances consistently ranked in the bottom 50% of relative variable importance. These results may indicate golden eagle tolerance or habituation to explosive military tests and trainings. Although the two chapters of this thesis are disjointed, they are loosely unified by the ecological importance of disturbance, invasive species, and restoration within the Great Basin ecoregion.

Movements And Space-Use Of Female Greater Sage-Grouse (Centrocercus Urophasianus) During Nesting And Breeding Seasons, Drew W. Retherford

Theses and Dissertations

Greater sage-grouse (Centrocercus urophasianus) are a species of conservation concern throughout their range including the state of Idaho. Little is known about the size of areas used by female sage-grouse during the breeding and nesting seasons, fidelity of females to those areas, or fidelity of female sage-grouse to specific leks or nest sites. The recent miniaturization of global positioning system (GPS) transmitting devices allows for a more thorough analysis of this behavior. We placed GPS transmitters on 234 female sage-grouse in Idaho, USA, from 2015 to 2019. We monitored 145 nest attempts, 15 of which occurred in consecutive years, from …

Marsupial Visitation To The Inflorescences Of The Endemic Agave Cupreata In Western Mexico, Rosario Arreola-Gómez, Eduardo Mendoza

Western North American Naturalist

We report, for the first time, visitation to the inflorescences of the endemic Agave cupreata by 2 marsupial species, Didelphis virginiana and Tlacuatzin canescens, in the state of Michoacán, western Mexico. These 2 species were recorded drinking the nectar of A. cupreata and transporting large amounts of pollen among the flowers. This agave is restricted to the mountainous slopes of the Balsas River basin in the states of Michoacán and Guerrero, and it constitutes the raw material for local production of a traditional beverage known as mezcal. In contrast to many other agaves that can propagate vegetatively, A. cupreata …

Lower Predation With Increasing Altitude In The Mesquite Lizard Sceloporus Grammicus, Miguel A. Domínguez-Godoy, J. Erick Gómez-Campos, Robyn Hudson, Aníbal H. Díaz De La Vega-Pérez

Western North American Naturalist

We evaluated differential predation pressure on the lizard Sceloporus grammicus at 3 sampling sites along a high-mountain gradient, using 3 methods of assessment: attacks on plasticine lizard models, frequency of lizard tail autotomy, and estimation of the richness of potential predators. We placed a total of 720 lizard models at each sampling site (2600, 3100, and 4150 m asl) on 6 d during the reproductive season and on 6 d during the nonreproductive season. Each day we placed 60 models (n = 30 for each sex, with each sex having 10 each of 3 gular color morphotypes [gray, yellow, …

The Effects Of Passive Hallux Adduction On Posterior Tibial Artery Blood Flow Compared To The Lateral Plantar Artery, Jaysen Alani Hatch

Theses and Dissertations

Passive hallux adduction has been shown to decrease blood flow in the lateral plantar artery (LPA) in a non-weight-bearing condition. Further research in weight-bearing and shod conditions is necessary to explore relationships between altered blood flow and injury or tissue healing. However, measuring blood flow in a shod foot would require an alternate measurement location to accommodate footwear, such as the more proximal posterior tibial artery (PTA). PURPOSE: To determine changes in blood flow in the PTA and LPA subsequent to passive hallux adduction and to compare the observed changes between the two arteries. Second, to determine if measurement at …

Brood Parasitism Of Greater Sage-Grouse By California Quail In Idaho, Jordan C. Rabon, Sarah E. Mcintire, Peter S. Coates, Mark A. Ricca, Tracey N. Johnson

Western North American Naturalist

We describe a case of brood parasitism of a Greater Sage-Grouse (Centrocercus urophasianus; hereafter, sage-grouse) nest by California Quail (Callipepla californica; hereafter, quail) in southwestern Idaho during 2019. We observed one quail egg in the parasitized nest; the egg partially hatched, but the chick was dead upon the final nest check. Of the 6 sage-grouse eggs in the nest, only 2 hatched, although the eggs contained chicks that appeared nearly completely developed. Identification of the quail chick was confirmed using mitochondrial DNA. Additional monitoring and documentation of this behavioral interaction is warranted to better understand its …

An Ulk1-Independent Mechanism Of Atg9a Regulation In Basal Autophagy, Ashari Rashmi Kannangara

Theses and Dissertations

Macroautophagy (hereafter referred to as autophagy) is the bulk degradation and recycling of cytoplasmic materials by forming a double membrane vesicle called the autophagosome. Autophagosome formation is regulated by the coordinated action of a set of proteins. ATG9A is the only multispanning transmembrane protein that plays an essential role in autophagosome formation, yet its function is largely elusive. Previous studies have shown that the C-terminus of ATG9A plays an important role in regulating its trafficking and proper function in autophagy. In line with that idea, we previously identified an AMPK- and ULK1- mediated phosphorylation on the C terminus of ATG9A …

Gastrointestinal Parasites In The Neotropical Otter (Lontra Longicaudis Annectens) In Central Mexico, Erika Y. Badillo Flores, Marcos G. Torres Tobón, C. Gustavo Aguilar Cabrera, O. Eric Ramírez-Bravo, Eva Romero Callejas

Western North American Naturalist

We analyzed 47 scats of neotropical otter (Lontra longicaudis annectens), collected along the Necaxa River in Central Mexico, using the Willis flotation technique with a 48% saturated saline solution. Along with plant material, we found the endoparasites Oxyuris equi, Ascaris sp., and Strongylus equinus, among others. Our results indicate that otters in the Necaxa River have a parasite load that needs further analysis, particularly because 2 of the parasite species are associated with human activity.


Analizamos 47 excretas de nutria neotropical (Lontra longicaudis annectens), colectadas a lo largo del Río Necaxa en el Centro …

Postfire Breeding Behavior In Couch's Spadefoot Toad (Scaphiopus Couchii) Along The San Pedro River, Arizona, Sidney B. Riddle, Cheyenne J. Herzog, Heather L. Bateman, Mason J. Ryan

Western North American Naturalist

Fire is an important ecosystem process that can impact local amphibian communities and breeding behaviors. Riparian gallery forests of the American Southwest are an important habitat for amphibians that breed in river channels, wetlands, and pools within the floodplain. High-intensity fires are rare in these riparian forests, and there is no information on how amphibians respond to fire in this system. We documented the presence and reproductive attempts of Couch’s spadefoot (Scaphiopus couchii) in the San Pedro River following a high-intensity wildfire in riparian gallery forest. These observations are the first recorded breeding events of Couch’s spadefoot in …

Possible Litter Of Seven Wild Black-Footed Ferret Kits, David A. Eads, Dustin Marsh

Western North American Naturalist

Endangered black-footed ferrets (BFFs, Mustela nigripes) specialize on prairie dogs (Cynomys spp.) for prey and use prairie dog burrows for shelter. In the wild, female BFFs produce 2–3 kits on average. Litters of 6 have been observed. At the Conata Basin, South Dakota, we observed an adult female BFF, named F05–183, with 7 kits. Data on space use by neighboring female BFFs suggest that F05–183 produced all 7 kits; alternative explanations are discussed. To our knowledge, this is the largest recorded litter count for wild-born BFFs.


Los hurones de patas negras (Mustela nigripes) que se encuentran …

Jaguars And Roads In The Calakmul Region, Evidence Of Road Crossing And Collisions With Vehicles, Edwin L. Hernández-Pérez, Joaquín López Sosa, Diana Friedeberg, Fernando M. Contreras-Moreno, Mircea G. Hidalgo-Mihart

Western North American Naturalist

Jaguars (Panthera onca) suffer from the negative effects of roads, mostly significant habitat fragmentation and increased risk of mortality due to vehicle collisions. In Mexico records of jaguars killed on roads are scarce and mostly anecdotal. The Calakmul-Balam-Kú jaguar population is the most important jaguar population in Mexico, but it is threatened by an extensive road network in which Federal Highway 186 Escárcega–Chetumal (hereafter called Hwy. 186) serves as the main road in the region. As part of a study to determine the diversity and abundance of medium- and large-sized mammals around Hwy. 186, we set 47 camera …