Digital Commons Network^™

Stress-Induced Executive Dysfunction In Gdnf-Deficient Mice, A Mouse Model Of Parkinsonism, Mona Buhusi, Kaitlin Olsen, Benjamin Z. Young, Catalin V. Buhusi

Psychology Faculty Publications

Maladaptive reactivity to stress is linked to improper decision making, impulsivity, and discounting of delayed rewards. Chronic unpredictable stress alters dopaminergic function and re-shapes dopaminergic circuits in key areas involved in decision making, and impairs prefrontal-cortex dependent response inhibition and working memory. Glial-derived neurotrophic factor (GDNF) is essential for regulating dopamine release in the basal ganglia and the survival of dopaminergic neurons, and GDNF-deficient mice are considered an animal model for aging-related Parkinsonism. Recently, GDNF expression in the striatum has been linked to resilience to stress. Here we investigated the effects of chronic unpredictable stress on decision making in GDNF-heterozygous …

Nutrient Recycling By Eared Grebes In The Great Salt Lake, Anthony J. Roberts, Michael R. Conover

Wildland Resources Faculty Publications

Nitrogen (N) and phosphorus (P) cycling in lakes can be impacted by numerous abiotic and biotic factors. Large animals, such as birds and mammals, may recycle nutrients within a system or bring them in from surrounding habitats or different landscapes. Eared Grebes (Podiceps nigricollis) congregate in large numbers in the fall on the Great Salt Lake (GSL), Utah, and may have an important role in recycling nutrients from macroinvertebrates back into the water column. We evaluated the role of Eared Grebes in N and P cycling within the GSL by estimating the magnitude of their nutrient recycling capacity. We estimated …

The Utah Statesman, May 18, 2016, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Threatened And Invasive Reptiles Are Not Two Sides Of The Same Coin, Reid Tingley, Peter J. Mahoney, Andrew M. Durso, Aimee G. Tallian, Alejandra Moran-Ordonez, Karen H. Beard

Wildland Resources Faculty Publications

The ‘two sides of the same coin’ hypothesis posits that biological traits that predispose species to extinction and invasion lie on opposite ends of a continuum. Conversely, anthropogenic factors may have similar effects on extinction and invasion risk. We test these two hypotheses using data on more than 1000 reptile species.

In Vitro Modeling Of Microgravity-Induced Muscle Atrophy And Spaceflight Radiation, Charles Harding, Jon Takemoto, Elizabeth Vargis

Utah Space Grant Consortium

Muscular atrophy, defined as the loss of muscle tissue, is a serious issue for immobilized patients on Earth and in human spaceflight, where microgravity prevents normal muscle loading. A major factor in muscular atrophy is oxidative stress, which is amplified not only by muscle disuse, but also by the increased levels of ionizing radiation in spaceflight. Additionally, elevated radiation exposure can damage DNA, increasing cancer risk.

To model oxidative stress and DNA damage generated by conditions on the International Space Station, murine C2C12 myoblasts were cultured in a rotary cell culture system irradiated by cesium-137. Changes due to the spaceflight …

Creating A 3d Imaging Device, Bryce Walker

Undergraduate Honors Capstone Projects

This report provides a summary of Bauble, a 3D imaging device designed at Utah State University by Bryce Walker. It is designed to work somewhat like a high tech Mirascope. Unfortunately, it has not yet been successful. Many setbacks occurred in the manufacturing process, detailed below. Simulations of Bauble show both that Bauble is an exciting idea, and that the technology required to manufacture a Bauble is not currently available.

Michael Mcclure, Garrett Faylor

ENGL 6350 – Beat Exhibit

McClure began as a wildly experimental poet who achieved early fame through his participation in the Six Gallery reading and went on to become a staple of the Bay Area poetry scene where he is now best known for his staged readings, often with musical accompaniment. McClure chose "For The Death of 100 Whales" as one of his four poems at the Six Gallery reading, marking the beginning of a career in political activism, which later fueled anti-war poems. He experimented with drugs, as a way to explore the boundaries between humanity and other life forms - what he called …

Gary Snyder, Shay Larsen

ENGL 6350 – Beat Exhibit

Raised among the forests and mountains of the Pacific North west, Snyder kindled his passion for the environment at an early age - a passion that would ultimately distance him from the Beat movement at its very beginnings. Snyder tempered his love of nature with stints of physical labor as a trail builder, logger, and firewatcher. Pursuing his interests in Zen Buddhism and Asian culture, Snyder accepted a scholarship from the First Zen Institute of America to study in Japan only a year after his participation in the 1955 Six Gallery reading. This scholarship would send Snyder over seas for …

The Consensus Problem, Cellular Automata, And Self-Replicating Structures, David Griffin

Physics Capstone Projects

Over The course of the last four years I have researched the consensus problem. I have done so by studying how cellular automata following the 2DGKL rule are able to reach consensus in a verity of ways. There are only certain structures that can form within a network, and these structures can be described and examined directly from the rules that make them up. I have also explored a variety of methods to study the rule including, graph theory and liner algebra representations of the cellular automata. Additionally I collected an analyzed data on symmetry in the rule, dependency on …

Utah State University Commencement, 2016 – Main Campus, Utah State University

Commencement Programs

129^th Annual Commencement of Utah State University.

Spatial Ecology And Captive Behavior Of Rehabilitated Black Bears In Utah, Patrick J. Myers

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Animal movements and space use are fundamental components of life and play integral roles in organismal fitness, population dynamics, and the ecology and evolution of species. The heterogeneous distribution of resources and the movement required to access them, results in ecology being a fundamentally spatial concept. Thus, elucidating animal-habitat relationships is a central focus of wildlife ecology and conservation. I utilized GPS technology, resource selection functions, and generalized linear mixed models, to investigate the immediate post-release movements, denning chronology, release-site fidelity, and season-delineated movements, home ranges, and resource use for six, orphaned and rehabilitated black bears (Ursus americanus). …

Impact Of Heavy Metal Contamination From Coal Flue Gas On Microalgae Biofuel And Biogas Production Through Multiple Conversion Pathways, Derek E. Hess

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Microalgae has a great potential to help alleviate the world's current dependence on fossil fuels. Microalgae is a single celled organism that produces lipids as a food storage device much like humans and animals store fat. These lipids are a kind of oil that when harvested can be utilized as biofuel.

As the technology surrounding using microalgae as a source of biofuel has advanced key bottlenecks in the eventual large-scale production of microalgae based biofuel have been discovered. One of these bottlenecks is the need to cheaply supply carbon for microalgae growth. One idea that has emerged as a plausible …

The Role Of Orexin Receptors In Diurnal Variations In Learning And Memory, Jacob Christian Blotter

Undergraduate Honors Capstone Projects

The brain's ability to learn and remember is a topic of extensive debate and research. Mammals share many similarities, including the way in which information from the outside world is processed and stored. Mammalian circadian rhythms have long been thought to be essentially involved with these processes. Orexin, a neurotransmitter in the brain, plays a crucial role in arousal and circadian rhythm. This study is designed to explore the brain's ability to process and store information at different times of the circadian period, and to explore the role of orexin by comparing the performance of normal (wild-type) mice and abnormal …

Thermal Property Measurement Of Thin Fibers By Complementary Methods, Troy Robert Munro

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Thin fibers are prevalent in many engineering materials. Measuring how well heat transfers in such small fibers can be difficult to determine, and previous methods have led to erroneous results. This dissertation details three proposed methods to improve the measurement of the thermal conductivity, thermal diffusivity, and volumetric heat capacity of thin fibers. Of particular interest is natural and synthetic spider silks because previously published values of the natural silk thermal conductivity was similar to copper, an excellent thermal conductor.

The three methods developed are the improved transient electrothermal technique (which was redeveloped to include radiation and convection heat losses …

Investigation Of The Tailoring Steps In Pradimicin Biosynthesis, Kandy L. Napan

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This research focused on the investigation of the late steps in the biosynthetic pathway of the novel antifungal and antiviral pradimicins A-C. Pradimicins were first isolated from the soil bacterium Actinomadura hibisca. These bioactive molecules are assembled by a type II polyketide biosynthetic pathway. Although the biosynthetic gene cluster of pradimicin has been identified, the functions of the biosynthetic genes and how they work collaboratively to form the final structures of pradimicins remain unknown. This research aims to functionally characterize the enzymes involved in the late steps of the biosynthetic route.

The early biosynthetic steps of pradimicins have been …

Modulation Of The Nutritional Context And Early Experience As New Tools To Increase The Use Of Medusahead (Taeniatherum Caput-Medusae Ssp. Asperum) By Grazing Sheep, Juan J. Montes

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Medusahead is an invasive weed that reduces wildlife habitat and biodiversity as well as commercial and recreational value of land. Grazing represents a sustainable method for its control but stakeholders claim that livestock will not eat medusahead because of its low feed value. This research explored a supplementation program, along with experiences early in life with mother to enhance use of medusahead by sheep. Results showed that an energy supplement did not enhance medusahead use by sheep but that early experience with mother influenced yearlings to use the weed more evenly across days. When availability of the weed was low …

Student Satisfaction At Utah State University Regional Campuses, Taylor K. Adams

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This research examined the difference between what undergraduate students at Utah State University (USU) regional campus locations perceive as important to their education and how satisfied students are with those education-related priorities. As institutions offer more distance education coursework, enrollment of nontraditional students is increasing. However, few studies examine satisfaction, which is a proven predictor of retention, of the student population described in this study.

The results of this study showed the highest discrepancies between priorities and satisfaction of undergraduate students at USU related to academic advising, course scheduling and registration; and finances including student fees, tuition, and financial aid …

Increasing The Sustainability Of Utah Farms By Incorporating Quinoa As A Novel Crop And Protecting Soil Health, Kristine R. Buckland

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Most of the western United States faces increasing water shortages in the coming years, that will present a major challenge for maintaining sustainable farms. Incorporating an alternative crop that is well adapted to projected changes in climate could be a successful approach to increasing the sustainability of farms in the region. Quinoa, Chenopodium quinoa Willd., may be an ideal alternative crop to meet the demands of the Intermountain West. Before widespread adoption of this novel crop can occur, best management strategies need to be documented. This paper provides research on cropping systems, irrigation rates, and weed competition with quinoa. Additionally, …

Intraspecific Variation In The Response Of Elymus Elymoides To Competition From Bromus Tectorum, Rebecca K. Mann

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In the western United States, thousands of acres of degraded rangelands are dominated by aggressive invasive species such as cheatgrass (Bromus tectorum), and are seeded by managers with native plants in an attempt to restore species diversity, wildlife habitat, and ecosystem services. There are many options for obtaining seeds of native plants; for instance, they can be collected from the region where restoration is to occur, or they may be purchased through commercial producers. For a given plant species, managers may also select seeds from unique subspecies, cultivars, and populations. Genetic differentiation among these within-species groups can not only affect …

Factors Of Profitable Field Crop Selection, Jacob Thomas Briscoe

Undergraduate Honors Capstone Projects

Methods of crop selection are varied, depending on a variety of factors, including resources, climate, soil type, and potential marketability of the crop. This study utilizes a theoretical farm of one thousand farmable acres to estimate the costs and returns as well as the resources associated with cultivating, planting, irrigating, harvesting and selling the crop products. The theoretical farm is situated in southwest Idaho in any of the counties of Ada, Canyon, Elmore, Owyhee and Payette. The crops grown are typical of the area; the crops examined are field corn (Zea mays), alfalfa (Medicago sativa) and …

Using Accelerometer Data To Remotely Assess Predation Activity Of Arctic Wolves, Heather Shipp

Undergraduate Honors Capstone Projects

Arctic wolves (Canis lupus arctos) play an important role in ecosystems located in the far northern regions of the world; however, unlike the gray wolves in Yellowstone National Park, little information is available about High Arctic wolves and their impacts on prey populations. This research uses data received from two GPS radio-collared Arctic wolves located in the Fosheim Peninsula on Ellesmere Island. Each radio-collar was programmed to record a position every 30-60 minutes, as well as the wolfs activity movement (forwards - backwards and left - right), which was generated by an accelerometer housed within the radio-collar. This …

The Effects Of Hazing On Urban Coyotes, Dakota Reed

Undergraduate Honors Capstone Projects

Urban expansion has rapidly increased over the last few decades. Over half of the human population now lives in urban areas (United Nations 2014). This has resulted in many carnivores being forced to adapt and find ways to use urban resources to survive (Bateman and Fleming 2012). While larger carnivores usually end up locally extinct, some medium sized predators like red fox (Vulpes vulpes), coyotes (Canis latrans), and raccoons (Procyon lotor) thrive in urban environments (Bateman and Fleming 2012). Having these carnivores living among humans can have both positive and negative consequences for the …

Relationships Of Beef Cattle Temperament With Feedlot Performance, Jeffrey James Briscoe

Undergraduate Honors Capstone Projects

This study determined relationships between beef cattle temperament and their feedlot performance. Thirty-five Angus cross-bred steers and heifers (18 steers and 17 heifers) were placed in the Utah State University feedlot to take part in the feed trial. Cattle temperament was measured by a chute score (CS, ranging from 1 = calm and not moving to 5 = rearing and violently struggling) and flight speed. Flight speed was measured by two observers to determine how long the animal took to travel 12 feet from the exit of the squeeze chute. Feedlot performance was assessed by body weight (BW) measurements, average …

A Triangular Bargain: Narration And Power In Margaret Atwood’S The Blind Assassin And Alias Grace, Alyssa Michelle Quinn

Undergraduate Honors Capstone Projects

This thesis analyzes reader-writer relationships in two novels by Canadian author Margaret Atwood, The Blind Assassin and Alias Grace. The plots of both these novels revolve around scenes of storytelling, in which tensions arise between the narrator and her audience. In The Blind Assassin, the elderly protagonist tells her granddaughter the truth about their family's past in an effort to achieve redemption. In Alias Grace, a convicted murderess tells her story to a psychiatrist who hopes to prove either her guilt or innocence. In my thesis, I examine how each of these narrative relationships reflects the relative …

The Effect Of Pure Infrared Light On The Growth Of Rhodospirrilum Rubrum, Jordan Lee Wilkes

Undergraduate Honors Capstone Projects

Scientists who study aquatic ecosystems quickly notice a diversity of pathways that different microbes and organisms can use to metabolize nutrients found in common ponds or pools. Competition for vital resources, such as light and inorganic minerals, allow only certain organisms to grow in certain niches within these ecosystems. Rhodospirillum rubrum is a gram negative, photosynthetic bacteria that competes for light within aquatic ecosystems in order to survive. R. rubrum is believed to specifically absorb light for photosynthesis at wavelengths in the range of infrared light. It was found that R. rubrum indeed can grow in "dark", anaerobic environments by …

Under Cover: An Exploration Of Book Cover Design And Reader Perception Of The Text, Maria Williams

Undergraduate Honors Capstone Projects

I am double majoring in graphic design and English and in doing so, am interested in studying the view of book cover design in both disciplines. This is partly a continuation of an Honors contract I did with Bob Winward in Fall 2015 when I designed multiple book covers. In this contract, a major aspect that determined whether a cover design was successful or not was whether the design was "true" to the text in the book. A literary critic, as opposed to a graphic designer who creates the cover, is given a book (and therefore a cover) and thus …

Perception Of Real And Perceived Anger In Various Races, Mikelle Hymas

Undergraduate Honors Capstone Projects

Research of emotional expressions has suggested that facial expressions of emotions are universal between cultures (Ekman, 1989). However, because of in-group biases, misidentification of emotions in other races can predictably occur. The misidentification of facial expressions of emotions can lead to predictable and specific racial biases. One important instance of this is that groups of White individuals often make the error of perceiving anger in an African American who is actually experiencing fear. This has important implications of accidental discrimination. The current study aimed to determine whether a brief training in accurate identification of various facial expressions would improve accuracy …

Biodiversity Prioritization: A Comparison Of Data Types, Kari Norman

Undergraduate Honors Capstone Projects

The identification of important areas for biodiversity is essential for effective allocation of limited conservation resources. Prioritizing regions for conservation based on biodiversity is typically done using global biodiversity maps created using range map data for one or more taxa. While the use of range maps makes pragmatic sense since large-scale survey data is rarely available, it is important to understand the sensitivity of the results to the use of range map data. We studied how prioritizations may change between data types using the North American Breeding Bird survey (BBS) and BirdLife International range maps as a comparison case study. …

A Book Of Conversations: Trauma, Representation, And Reconstruction In Lewis Carroll's Alice's Adventures In Wonderland, Rachel Telfer

Undergraduate Honors Capstone Projects

For over 150 years, critics and readers have struggled to understand the meaning of Lewis Carroll's Alice's Adventures in Wonderland. Through Alice, Carroll asserts that a focus on conversations in Wonderland will illuminate the use, or value, of his novel. The conversations between Alice and other characters reveal that Alice experiences a breakdown of her reality that mirrors the symptoms of trauma. Thus, looking through Alice's deconstructive process through the lens of trauma can provide insight into the value of Carroll's novel. Yet the novel does not describe a known source of trauma. Instead of emphasizing the traumatic event …

Burlesque Of The Herbivore: Ovid's Comic Pythagoras In Met. 15, Alex M. Tarbet

Undergraduate Honors Capstone Projects

Pythagoras' speech at the climax of Metamorphoses (15.60-478) has frustrated all attempts to pin it down. To many it seems playfully vacuous, a harmless intellectual exhibition. Mack, for instance, calls it "vehement and impassioned...but signifying little." Solodow argues that it does not have "any special significance in itself nor lends any to the poem as a whole." Little sees only "superficial correspondence with [Ovid's] subject matter." Particularly troublesome is its culminating injunction to "empty the mouth of meats and choose harmless foods " (ora vacent epulis alimentaque mitia carpant! 478), which seems not only out of place in the …