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Articles 5161 - 5190 of 16020
Full-Text Articles in Entire DC Network
Construction Of Synthetic Genes Of The Acinoform Spider Silk Protein (Acsp1), P. Tate Weller, Samuel T. Briggs, Paula F. Oliveira, Fernando A. Agarraberes
Construction Of Synthetic Genes Of The Acinoform Spider Silk Protein (Acsp1), P. Tate Weller, Samuel T. Briggs, Paula F. Oliveira, Fernando A. Agarraberes
Biology Posters
No abstract provided.
Willow Park Zoo Internship, Lynnessa Zika
From Spider To Silk: Constructions Of Synthetic Genes Of The Acinoform Spider Silk Protein (Acsp1), P. Tate Weller, Samuel T. Briggs, Paula F. Oliveira, Fernando A. Agarraberes, Randy V. Lewis
From Spider To Silk: Constructions Of Synthetic Genes Of The Acinoform Spider Silk Protein (Acsp1), P. Tate Weller, Samuel T. Briggs, Paula F. Oliveira, Fernando A. Agarraberes, Randy V. Lewis
Biology Posters
Spider silks have remarkable physical properties due to a combination of strength and elasticity. In addition, spider silks are biocompatible and biodegradable. Our laboratory has shown that the strength products, such as fibers, produced with other silk proteins correlates with the size of the silk protein. The aciniform silk (AcSp1), has been shown to produce the thinnest and strongest fibers of all the natural spider silks. Aciniform silk is composed of a nonrepetitive amino-terminal region, 14 repeats of approximately 200 amino acids each, and a nonrepetitive carboxy-terminal region. We have been able to produce different versions of these genes encoding …
Optimal Fish Feed Quantity For Leatherside Chub Fry, Tyrel Hanson, Eric Wagner
Optimal Fish Feed Quantity For Leatherside Chub Fry, Tyrel Hanson, Eric Wagner
Biology Posters
Leatherside chub are a threatened species and little has been studied concerning how to optimally raise them in a controlled environment. Leatherside’s are susceptible to fungal growth. This makes it difficult to balance how much feed to give the fry for their optimal development. Giving them an excess of feed can cause fungal blooms, which can kill the fry. Our goal was to better understand how much feed fry will eat at different stages of development without creating an excess of feed leading to fungal growth.
How Vegetation Around Usu Main Campus Impacts Bird-Window Collisions, Brooklyn J. Atkinson, Kimberly A. Sulivan
How Vegetation Around Usu Main Campus Impacts Bird-Window Collisions, Brooklyn J. Atkinson, Kimberly A. Sulivan
Biology Posters
A poster detailing the issues and potential solutions for bird-window collisions on USU Main Campus.
Antiviral Drug Sensitivity Of Influenza Virus Isolates Collected From Migratory Birds, Justin D. Moscon, Bart Tarbet
Antiviral Drug Sensitivity Of Influenza Virus Isolates Collected From Migratory Birds, Justin D. Moscon, Bart Tarbet
Biology Posters
Aquatic birds are the natural reservoirs of a wide variety of influenza A viruses. Novel influenza strains occasionally emerge from wild bird populations and spread to other species. Historically, pandemic influenza strains crossing over to humans have led to serious outbreaks. The rapid evolution of influenza strains in birds presents a major public health concern. Globalization and intensified agriculture have increased human contact with avian influenzas in the past century. Antiviral drugs effective against influenza are an important part of preparing for outbreaks, as well as common seasonal flu’s. Two major classes of antiviral drugs widely used against influenza are …
Windows: The Number One Killer, Lynnessa Zika
Windows: The Number One Killer, Lynnessa Zika
Biology Posters
Windows are the number one killer of birds in America. Following a large number of bird window collisions in the fall of 2015, Utah State University created a committee to decrease the bird window collisions on campus. The BNR building was identified as a building with frequent collisions.
Detecting Fitness Trade-Offs Using A Reversion Experiment, Kemyla Sacre, Frank Messina
Detecting Fitness Trade-Offs Using A Reversion Experiment, Kemyla Sacre, Frank Messina
Biology Posters
No abstract provided.
Analyses Of Bordetella Isolates Collected From Turkeys With Respiratory Disease Using Maldi-Tof Mass Spectroscopy And Comparison To A Bordetella Avium Vaccine, Bart Tarbet, J. Barney, L. Mcmillan, A. Mason, E. Gonder, L. Temple, D. Frame
Analyses Of Bordetella Isolates Collected From Turkeys With Respiratory Disease Using Maldi-Tof Mass Spectroscopy And Comparison To A Bordetella Avium Vaccine, Bart Tarbet, J. Barney, L. Mcmillan, A. Mason, E. Gonder, L. Temple, D. Frame
Biology Posters
Bordetella avium has been isolated from turkeys showing clinical signs of respiratory disease and increased mortality in Sanpete County Utah, despite receiving the B. avium vaccine. To determine if recent B. avium isolates are related, or unrelated to the vaccine strain, twenty-five isolates from different time periods and different locations in the U.S. were collected for comparison by MALDI-TOF mass spectroscopy. Spectra were evaluated by MALDI Biotyper software (Bruker Co.) to determine relationships among the clinical isolates. Cluster analysis of the spectra showed four major clusters using the principle component scores for the three spectral peaks in highest abundance. These …
Tag-Team Takeover: Usurpation Of Woodpecker Nests By Western Bluebirds, Sammy Cowell, Hannah Domgaard, Phil Fischer, Teresa Lorenz, Sara Lorscheider, Mariah Panoussi, Lindsey Parrish, Taryn Rodman, Kim Sullivan
Tag-Team Takeover: Usurpation Of Woodpecker Nests By Western Bluebirds, Sammy Cowell, Hannah Domgaard, Phil Fischer, Teresa Lorenz, Sara Lorscheider, Mariah Panoussi, Lindsey Parrish, Taryn Rodman, Kim Sullivan
Biology Posters
No abstract provided.
Thermoregulatory Responses In Lamprophis Fuliginosis, Michael Ryan
Thermoregulatory Responses In Lamprophis Fuliginosis, Michael Ryan
Biology Posters
No abstract provided.
Social Environment Relationship To Ovary Development Of B.Impatiens, Andy Nguyen, Mariah Panoussi
Social Environment Relationship To Ovary Development Of B.Impatiens, Andy Nguyen, Mariah Panoussi
Biology Posters
Ovary development measures showed that, among pairs of bees isolated from the nest, one female became reproductively dominant and the other bee was reproductively subordinate. There was statistical significance in the difference in average length of the terminal oocytes between the pairs within a petri dish.
Conductive Ink Meets Spider Silk, Jay Merrill, Amir Ghazi, Thomas I. Harris, Ibrahim Hassounah, Randolph V. Lewis
Conductive Ink Meets Spider Silk, Jay Merrill, Amir Ghazi, Thomas I. Harris, Ibrahim Hassounah, Randolph V. Lewis
Biology Posters
Spider silk proteins can be created synthetically and are highly valued for their strength, durability, and flexibility. By altering the genome of goats, silk worms, and the bacteria E. coli we are able to manufacture spider silk products in lab. The production and manipulation of these ‘recombinant spider silk proteins’ along with the process of aqueous solubilization can yield many useful spider silk materials such as films, fibers, gels, coatings, and more. Conductive ink is a recent and popular scientific discovery that let’s you create flexible working circuits. This product has many applications including RFID tags, circuit boards, and printers. …
Initiating A Bird Window Collision Survey On The Logan Main Campus Of Utah State University, Eliza Browning, Kimberly Sulivan
Initiating A Bird Window Collision Survey On The Logan Main Campus Of Utah State University, Eliza Browning, Kimberly Sulivan
Biology Posters
Bird deaths resulting from window collisions are responsible for over 1 billion deaths annually and are ranked the number one threat to bird populations across the country.
Native American Stem Mentorship Program, Quisheima Brown, Curtis Frazier, Audrey Tso
Native American Stem Mentorship Program, Quisheima Brown, Curtis Frazier, Audrey Tso
Biology Posters
No abstract provided.
Limber Pine (Pinus Flexilis James), A Flexible Generalist Of Forest Communities In The Intermountain West, Marcella A. Windmuller-Campione, James N. Long
Limber Pine (Pinus Flexilis James), A Flexible Generalist Of Forest Communities In The Intermountain West, Marcella A. Windmuller-Campione, James N. Long
Wildland Resources Faculty Publications
As forest communities continue to experience interactions between climate change and shifting disturbance regimes, there is an increased need to link ecological understanding to applied management. Limber pine (Pinus flexilis James.), an understudied species of western North America, has been documented to dominate harsh environments and thought to be competitively excluded from mesic environments. An observational study was conducted using the Forest Inventory and Analysis Database (FIAD) to test the competitive exclusion hypothesis across a broad elevational and geographic area within the Intermountain West, USA. We anticipated that competitive exclusion would result in limber pine’s absence from mid-elevation forest communities, …
Brine Shrimp Lab, Brynja Kohler, Rebecca Swank, Jim Haefner, Jim Powell
Brine Shrimp Lab, Brynja Kohler, Rebecca Swank, Jim Haefner, Jim Powell
Laboratory Experiences in Mathematical Biology
Young brine shrimp movements within a petri dish are tracked by students. Students are challenged to determine and verify whether the brine shrimp move in a random walk. From this exercise students gain greater understanding of PDE models, diffusion and parameter estimation.
Evaluating The Efficacy Of Brood Flush Counts: A Case Study In Two Quail Species, Jeremy P. Orange, Craig A. Davis, R. Dwayne Elmore, Evan P. Turner, Smauel D. Fuhlendorf, Eric T. Thacker
Evaluating The Efficacy Of Brood Flush Counts: A Case Study In Two Quail Species, Jeremy P. Orange, Craig A. Davis, R. Dwayne Elmore, Evan P. Turner, Smauel D. Fuhlendorf, Eric T. Thacker
Wildland Resources Faculty Publications
Taking brood flush counts is a common sampling method that has been used for decades to estimate brood and chick survival in many gallinaceous bird species. However, brood survival estimates based upon flush counts may be biased because of low detection probabilities, occurrence of brood amalgamations, brood abandonment, and brooding adult mortality. Given that brood flush counts are still commonly used to estimate brood survival, and in some cases extrapolated to provide an estimate of chick survival, it is important to evaluate biases associated with this method. Therefore, we evaluated the use of brood flush counts to estimate brood survival …
Environmental Influences On Wintering Duck Abundance At Great Salt Lake, Utah, Anthony J. Roberts, Michael R. Conover, Josh L. Vest
Environmental Influences On Wintering Duck Abundance At Great Salt Lake, Utah, Anthony J. Roberts, Michael R. Conover, Josh L. Vest
Wildland Resources Faculty Publications
North American waterfowl winter throughout a large geographic area, and the choice of wintering site has a direct impact on survival and fitness. Climatic and food variables are the most commonly cited factors influencing abundance and distribution of wintering migratory birds, including waterfowl. We conducted stratified aerial surveys at a northern latitude wintering site, Great Salt Lake (GSL), Utah, to describe the importance of this wintering area and to examine the influence of weather and food on the abundance of total ducks, Northern Shovelers (Anas clypeata), and goldeneye species (Bucephala spp.). Surveys indicated that up to 270,000 ducks use the …
Population Density, Not Host Competence, Drives Patterns Of Disease In An Invaded Community, C. L. Searle
Population Density, Not Host Competence, Drives Patterns Of Disease In An Invaded Community, C. L. Searle
Mathematics and Statistics Faculty Presentations
Generalist parasites can strongly influence interactions between native and invasive species. Host competence can be used to predict how an invasive species will affect community disease dynamics; the addition of a highly competent, invasive host is predicted to increase disease. However, densities of invasive and native species can also influence the impacts of invasive species on community disease dynamics. We examined whether information on host competence alone could be used to accurately predict the effects of an invasive host on disease in native hosts. We first characterized the relative competence of an invasive species and a native host species to …
Arakniprint: 3d Printing Of Synthetic Spider Silk To Produce Biocompatible And Resorbable Biomaterials, Ashley Ruben, Brianne Bell, Chase Spencer, Craig Soelberg, Dan Gil, Thomas Harris, Richard Decker, Timothy A. Taylor, Randolph V. Lewis
Arakniprint: 3d Printing Of Synthetic Spider Silk To Produce Biocompatible And Resorbable Biomaterials, Ashley Ruben, Brianne Bell, Chase Spencer, Craig Soelberg, Dan Gil, Thomas Harris, Richard Decker, Timothy A. Taylor, Randolph V. Lewis
UCUR
No abstract provided.
Toward An Optimal Spectral Quality For Plant Growth And Development: The Importance Of Radiation Capture, Bruce Bugbee
Toward An Optimal Spectral Quality For Plant Growth And Development: The Importance Of Radiation Capture, Bruce Bugbee
Plants, Soils, and Climate Faculty Publications
We have characterized the effects of individual wavelengths of light on single leaf photosynthesis but we do not yet fully understand the effects of multi-wavelength radiation sources on growth and whole-plant net assimilation. Studies with monochromatic light by Hoover, McCree and Inada nearly a half century ago indicated that blue and cyan photons are used less efficiently than orange and red photons. Contrary to these measurements, studies in whole plants have found that photosynthesis often increases with an increasing fraction of blue photons. Plant growth, however, typically decreases as the fraction of blue photons increases above 5 to 10%. The …
Dna Methylation And Stress-Induced Reversions From Asexual To Sexual Seed Formation In Boechera (Brassicacea), Landon Watts
Dna Methylation And Stress-Induced Reversions From Asexual To Sexual Seed Formation In Boechera (Brassicacea), Landon Watts
Biology Posters
Apomixis is a form of asexual reproduction that occurs in many plants and animals. Eggs of apomictic plants and animals form by apomeiosis, which means they do not become genetically reduced. Furthermore, these eggs develop into embryos without fertilization. Apomictic plants and animals generally reproduce quickly by making genetic copies of themselves, a trait that would be economically beneficial for perpetuating hybrid vigor if introduced into major seed crops. Metabolic stress induces a reversion from apomixis to sex in many apomicts, and this was recently shown to occur in species of the plant genus Boechera. 1 Transcriptome studies strongly suggest …
Native American 2016 Stem Mentorship, Shiyenne Yazzie
Native American 2016 Stem Mentorship, Shiyenne Yazzie
Biology Posters
No abstract provided.
Stem Program, Marty Brown
An Environmentally Friendly Conductive Ink Made Using Transgenic Spider Silk Protein And Silver Salts, Amir Ghazi Tabatabaei, Jay Merrill, Randolph V. Lewis, Ibrahim Hassounah
An Environmentally Friendly Conductive Ink Made Using Transgenic Spider Silk Protein And Silver Salts, Amir Ghazi Tabatabaei, Jay Merrill, Randolph V. Lewis, Ibrahim Hassounah
Biology Posters
The goal of this study was to demonstrate that it is possible to formulate an electrically conductive, stretchable and environmentally friendly ink or coating. This is made possible by harnessing the properties of biomimetic spider silk obtained from transgenic goats. In this experiment we formulated four inks using spider silk, silver trifluoroacetate and carbon nanotubes (CNT). We utilized Polyethylene terephthalate (PET), spider silk, natural rubber (Latex) and polystyrene-block-isobutylene-block-styrene(SIS) as substrates to demonstrate the flexible nature of the ink/coating. We then conducted surface characterization using FTIR and SEM to verify the presence of our coating and quantified the thickness of our …
Observation Of Fertilized Bovine Oocytes, Tyce Addley, Kenneth Campbell
Observation Of Fertilized Bovine Oocytes, Tyce Addley, Kenneth Campbell
Biology Posters
Oocytes were extracted from bovine ovaries by perforation of the follicle wall. Oocytes extracted were chosen for culture based on the cumulus-oocyte complex (COC), graded by the density of cumulus cells on a scale of A-D, in vitro fertilization (IVF) was performed on COC’s rated A or B. Healthy COC were placed into a maturation media for incubation at 29 degree C with a 5 percent CO2 air mixture for twenty four hours. After the maturation period the chosen oocytes were fertilized by IVF using frozen/thawed semen from one bull.
Utah State Magazine, Winter 2016, Utah State University
Utah State Magazine, Winter 2016, Utah State University
Utah State Magazine
The quarterly magazine for friends and alumni of Utah State University
Variations In The Intensity Of Specialized Science, Technology, Engineering, And Mathematics (Stem) High Schools, Colby Tofel-Grehl, Carolyn M. Callahan
Variations In The Intensity Of Specialized Science, Technology, Engineering, And Mathematics (Stem) High Schools, Colby Tofel-Grehl, Carolyn M. Callahan
Teacher Education and Leadership Faculty Publications
Educators and policymakers in the United States advocate the development of specialized STEM (science, technology, engineering, and mathematics) schools, but little is known about the unique features and practices of these schools. Because no meaningful differences have been found attributable to model type (Tofel-Grehl & Callahan, 2014), the current study purposefully sampled 6 specialized STEM schools in the United States that provided different levels of STEM experiences for students related to highly varied goals and missions using a grounded theory approach. Schools were found to fall into two categories, high and low STEM intensity, based on five major traits. Schools …
Disease Lab, Jim Powell, Matthew Lewis
Disease Lab, Jim Powell, Matthew Lewis
Laboratory Experiences in Mathematical Biology
Students use transparencies and dry erase markers to simulate the spread of a zombie virus among a fixed population. Students are then challenged to create their own "disease" and develop an ODE model for the resulting data. From this exercise students gain greater understanding of population and SIR models, disease dynamics, parameter estimation and compartment modeling.