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Characterization Of Sterile Tassel Silky Earl: A Homeotic B-Class Gene Involved In Specification Of Floral Organ Identity In Zea Mays, Steven Keith Williams
Characterization Of Sterile Tassel Silky Earl: A Homeotic B-Class Gene Involved In Specification Of Floral Organ Identity In Zea Mays, Steven Keith Williams
Theses and Dissertations
Specification of floral organ identity in angiosperm flowers is accomplished by the coordinated activity of A-, B-, C-, and E-class MADS-box genes. In the eudicots, B-class genes specify petal and stamen identity. This eudicot B-class function depends on the simultaneous expression of genes from two paralogous B-class lineages (the DEFICIENS/APETALA3 lineage and the GLOBOSA/PISTILLATA lineage). Proteins produced by genes from these two lineages interact as obligate heterodimers and together regulate the transcription of various downstream targets. These obligate heterodimers also positively regulate the transcription of the B-class genes themselves, thereby mediating a unique B-class autoregulatory feedback loop. There is compelling …
Psychological Well-Being And Dietary Quality Of College Women: Examining The Confounding Influence Of Sleep And Physical Activity, Whitney Ann Hebbert
Psychological Well-Being And Dietary Quality Of College Women: Examining The Confounding Influence Of Sleep And Physical Activity, Whitney Ann Hebbert
Theses and Dissertations
Objective. To determine the relationship between overall psychological well-being and stress on diet quality among young adult women and to examine the potential confounding influence of season, physical activity and sleep on these relationships. Design/Participants. The study used a cross-sectional design. Three hundred and fifty-one women were recruited to participate in the study. All participants were university students (20.2 ± 1.6 y). Overall psychological well-being was assessed using the General Well-being Schedule (GWB) and the Perceived Stress Scale (PSS). Diet intake was measured using three 24-hour recalls over a seven day period. The Healthy Eating Index (HEI) was calculated to …
The Effect Of The Semantic Depth Of Spanish Verbs On Processing Demands Of Filler-Gap Relationships In Noun Clauses, Ashlee Marie Jessen
The Effect Of The Semantic Depth Of Spanish Verbs On Processing Demands Of Filler-Gap Relationships In Noun Clauses, Ashlee Marie Jessen
Theses and Dissertations
This study explored the relationship between syntax and semantics in an effort to provide evidence against a strict theory of the Autonomy of Syntax. The evidence was provided by an acceptability survey given to 20 native, adult Mexicans who ranked both declarative and wh-questions which manifested a filler-gap relationship where the gap was located in an embedded noun clause. The main verbs were controlled for semantic depth by being ranked within verbal categories according to external evidence of markedness or semantic depth. The primary hypothesis was that semantically deeper verbs would add to the already increased strain on working memory …
Life History Analysis Of James River Atlantic Sturgeon (Acipenser Oxyrinchus Oxyrinchus) With Implications For Management And Recovery Of The Species, Matthew Balazik
Life History Analysis Of James River Atlantic Sturgeon (Acipenser Oxyrinchus Oxyrinchus) With Implications For Management And Recovery Of The Species, Matthew Balazik
Theses and Dissertations
Sturgeon species (family Acipenseridae) are threatened globally due to habitat destruction, pollution, and overfishing. The Atlantic sturgeon Acipenser oxyrinchus oxyrinchus was listed as a federally endangered species in 2012. Atlantic sturgeon have a complex life history that utilizes a wide range of habitats. Timing of life history varies in different areas requiring each population to be studied. Very little work has been published on Atlantic sturgeon reproduction in the James River, Virginia. To aid the recovery of James River Atlantic sturgeon, aspects of life history need to be addressed. To increase understanding of Atlantic sturgeon life history a length at …
From Linkage To Gwas: A Multifaceted Exploration Of The Genetic Risk For Alcohol Dependence, Amy Adkins
From Linkage To Gwas: A Multifaceted Exploration Of The Genetic Risk For Alcohol Dependence, Amy Adkins
Theses and Dissertations
Family, twin and adoption studies consistently suggest that genetic factors strongly influence the risk for alcohol dependence (AD). Although the literature supports the role of genetics in AD, identification of specific genes contributing to the etiology of AD has proven difficult. These difficulties are due in part to the complex set of risk factors contributing to the development of AD. These risk factors include comorbidities with other clinical diagnoses and behavioral phenotypes (e.g., major depression), physiological differences that contribute to the differences between people in their level of response to ethanol (e.g., initial sensitivity) and finally the large number of …
Improving Phosphorus Use Efficiency Through Organically Bonded Phosphorus, Micheal W. Hill
Improving Phosphorus Use Efficiency Through Organically Bonded Phosphorus, Micheal W. Hill
Theses and Dissertations
Current maximum efficiency of phosphorus (P) fertilizers that is utilized by plants in the same year of application ranges from near zero to thirty percent. Despite low utilization of P in crop production, yields are often limited by P deficiencies. Innovative technology is requisite to achieve greater efficiency as fertilizer demands are increasing, while phosphorus mineral resources are rapidly being depleted. A growing environmental concern for nutrient pollution of surface waters also carries significant weight. A novel new product, Carbond® P, is promising technology to increase P use efficiency. Research is needed to understand its capabilities and the functioning mechanisms …
Feminism And The New Woman In The Gilbert & Sullivan Operas, Heather Dawn Zurcher
Feminism And The New Woman In The Gilbert & Sullivan Operas, Heather Dawn Zurcher
Theses and Dissertations
The operas by playwright W. S. Gilbert and composer Arthur Sullivan have been considered some of the most popular and successful pieces of musical theatre in the English language. While their joint creative output neared perfection, Gilbert and Sullivan's working relationship was fraught with conflict. The two men's opposing personalities led them to favor disparate styles and work towards different goals. However, the ability to balance contrasting tones, such as sarcasm and sympathy, resulted in their overwhelming success. I analyze this "winning formula" by looking at the influence of feminism, especially the "New Woman" literary movement, on the works of …
Effects Of Chemical Stimulation And Tumor Co-Incubation On Macrophage Activation And Aggressiveness, Measured Through Phagocytosis And Respiratory Burst, Bo Marcus Gustafsson
Effects Of Chemical Stimulation And Tumor Co-Incubation On Macrophage Activation And Aggressiveness, Measured Through Phagocytosis And Respiratory Burst, Bo Marcus Gustafsson
Theses and Dissertations
Macrophages are a cornerstone in innate immunity, especially important in detecting and killing invading microorganisms. In tumor biology, the macrophages can contribute both to anti-tumor activity and tumor promotion depending on individual tumor microenvironment and therefore have a large impact on both tumor progression and prognosis. Two of the most important functions of macrophages are the ability to phagocytose microorganisms and then kill them through the respiratory burst. Phagocytosis activates the respiratory burst, but the more subtle interactions between these processes are less known. Since phagocytosis and reactive oxygen species production are two attributes that change between the classically and …
A Survey Of Invasive Exotic Ants Found On Hawaiian Islands: Spatial Distributions And Patterns Of Association, Camie Frandsen Martin
A Survey Of Invasive Exotic Ants Found On Hawaiian Islands: Spatial Distributions And Patterns Of Association, Camie Frandsen Martin
Theses and Dissertations
An intensive sampling of all ant species encountered on 6 Hawaiian Islands: Big Island, Maui, Oahu, Kauai, Molokai, and Lanai took place between 1988 and 1996. Species presence and absence was recorded at each site. Using remote sensing, variables were added insitu and used throughout my analysis. Species accumulation curves suggest that sampling was comprehensive. There is a significant trend between island area and species richness which validates the Theory of Island Biogeography for invasive species. Islands were found to be significantly nested by area, order, and tourism. Cluster analysis shows a link between elevation, land-use and island, and species …
Liquid-Liquid Equilibrium Of Biodiesel Components, Joseph C. Bell
Liquid-Liquid Equilibrium Of Biodiesel Components, Joseph C. Bell
Theses and Dissertations
Biodiesel is produced from vegetable oils through transesterification. Triglyceride mixtures extracted from oilseed feedstocks are upgraded by reaction with an alcohol in the presence of a catalyst to produce fatty acid esters. This reaction produces a mixture of esters, glycerin, alcohol, and catalyst. Separation of the fatty acid esters (biodiesel) and glycerin can be accomplished through liquid-liquid extraction by water addition. Designing liquid-liquid extraction with water as the solvent requires ternary liquid-liquid equilibrium data for mixtures of water, glycerin, and fatty acid esters. Ternary mixture LLE data have been experimentally measured for several of these systems. Those measured include mixtures …
Efficient Estimation For Small Multi-Rotor Air Vehicles Operating In Unknown, Indoor Environments, John Charles Macdonald
Efficient Estimation For Small Multi-Rotor Air Vehicles Operating In Unknown, Indoor Environments, John Charles Macdonald
Theses and Dissertations
In this dissertation we present advances in developing an autonomous air vehicle capable of navigating through unknown, indoor environments. The problem imposes stringent limits on the computational power available onboard the vehicle, but the environment necessitates using 3D sensors such as stereo or RGB-D cameras whose data requires significant processing. We address the problem by proposing and developing key elements of a relative navigation scheme that moves as many processing tasks as possible out of the time-critical functions needed to maintain flight. We present in Chapter 2 analysis and results for an improved multirotor helicopter state estimator. The filter generates …
Streamlined Extract Preparation For E. Coli-Based Cell-Free Protein Synthesis And Rapid Site-Specific Incorporation Of Unnatural Amino Acids In Proteins, Prashanta Shrestha
Streamlined Extract Preparation For E. Coli-Based Cell-Free Protein Synthesis And Rapid Site-Specific Incorporation Of Unnatural Amino Acids In Proteins, Prashanta Shrestha
Theses and Dissertations
This thesis reports the viability of E. coli cell extracts prepared using equipment that is both common to biotechnology laboratories and able to process small volume samples and expression of proteins containing unnatural amino acids (UAAs) at higher level using PCR amplified linear DNA templates (LETs) in cell-free protein synthesis (CFPS) system. E. coli-based cell extracts are a vital component of inexpensive and high-yielding CFPS reactions. However, effective preparation of E. coli cell extract is limited to high-pressure homogenizers (French press style or impinge-style) or bead mill homogenizers, which all require a significant capital investment. This work specifically assessed the …
The Economic Burden Of Opioid Poisoning In The United States And Determinants Of Increased Costs In Opioid Poisoning, Timothy Inocencio
The Economic Burden Of Opioid Poisoning In The United States And Determinants Of Increased Costs In Opioid Poisoning, Timothy Inocencio
Theses and Dissertations
Introduction: Opioid poisoning has been rapidly increasing in the past decade, and has been driven in large part due to increases in opioid prescribing. This has been accompanied by intervention efforts aimed at preventing and reversing opioid poisoning through naloxone prescription programs. Current literature have not quantified the economic burden of opioid poisoning. Understanding this information can help inform these efforts and bring light to this growing problem. In addition understanding various determinants of increased costs can help to identify the types of populations more likely to have greater costs. Main Objectives: The objectives are 1) to quantify the economic …
Characterization Of The Expression Of The Intercellular Adhesin Locus In Staphylococcus Aureus, Jamie Brooks
Characterization Of The Expression Of The Intercellular Adhesin Locus In Staphylococcus Aureus, Jamie Brooks
Theses and Dissertations
Poly-N-acetylglucosamine (PNAG) is an important Staphylococcus aureus virulence factor. It is a major component of the extracellular polymeric matrix in biofilms, and contributes to resistance to the innate immune response. The proteins encoded in the icaADBC (intercellular adhesin) operon are responsible for PNAG production. Here, we present evidence of a new mechanism of phase variation for switching off PNAG production that involves slipped strand mutagenesis, along with further insight into the regulation and expression of the icaADBC operon. S. aureus strain MN8m (mucoid) is a spontaneous mutant of strain MN8 (non-mucoid). It is characterized by constitutive overproduction of PNAG, resulting …
Investigation Of Possible Novel Peptide Inhibitors To Bag-1 Based On Peptidyl-Biomimetics, Jonathan Brunn
Investigation Of Possible Novel Peptide Inhibitors To Bag-1 Based On Peptidyl-Biomimetics, Jonathan Brunn
Theses and Dissertations
In this Master’s Thesis Research the results can be summarized from two major tasks: (1) In our first task, we utilized our two protein system (BAG-1 and HSP 70) as part of beta testing of a computational software 1 that can take three dimensional x-ray crystallography information about protein complexes and predict the strength of atom –atom interactions between amino-acid residues Open Contact predicts binding hotspots that can be used to identify short amino acid chains or peptides that mimic that particular binding segment of the larger protein. These peptides are called pepidyl-biomimetics. The peptide can potentially act as an …
Internal Wave Generation Over Rough, Sloped Topography: An Experimental Study, Lauren Elizabeth Eberly
Internal Wave Generation Over Rough, Sloped Topography: An Experimental Study, Lauren Elizabeth Eberly
Theses and Dissertations
Internal waves exist everywhere in stratified fluids - fluids whose density changes with depth. The two largest bodies of stratified fluid are the atmosphere and ocean. Internal waves are generated from a variety of mechanisms. One common mechanism is wind forcing over repeated sinusoidal topography, like a series of hills. When modeling these waves, linear theory has been employed due to its ease and low computational cost. However, recent research has shown that non-linear effects, such as boundary layer separation, may have a dramatic impact on wave generation. This research has consisted of experimentation on sloped, sinusoidal hills. As of …
Summer Watering Patterns Of Mule Deer And Differential Use Of Water By Bighorn Sheep, Elk, Mule Deer, And Pronghorn In Utah, Andrew V. Shields
Summer Watering Patterns Of Mule Deer And Differential Use Of Water By Bighorn Sheep, Elk, Mule Deer, And Pronghorn In Utah, Andrew V. Shields
Theses and Dissertations
Changes in the abundance and distribution of free (drinking) water can influence wildlife in arid regions. In the western USA, free water is considered by wildlife managers to be important for bighorn sheep (Ovis canadensis), elk (Cervus elaphus), mule deer (Odocoileus hemionus), and pronghorn (Antilocapra americana). Nonetheless, we lack information on the influence of habitat and landscape features surrounding water sources, including wildlife water developments, and how these features may influence use of water by sexes differently. Consequently, a better understanding of differential use of water by the sexes could influence the conservation and management of those ungulates and water …
Habitat Selection Of Greater Sage-Grouse Centrocercus Urophasianus And Northern River Otters Lontra Canadensis In Utah, Matthew D. Westover
Habitat Selection Of Greater Sage-Grouse Centrocercus Urophasianus And Northern River Otters Lontra Canadensis In Utah, Matthew D. Westover
Theses and Dissertations
Greater sage-grouse populations have decreased steadily since European settlement in western North America. Reduced availability of brood-rearing habitat has been identified as a limiting factor for many populations. We used radio-telemetry to acquire locations of sage-grouse broods from 1998 to 2012 in Strawberry Valley, Utah. Using these locations and remotely-sensed imagery, we proceeded to 1) determine which features of brood-rearing habitat could be identified using widely available, fine-scale imagery 2) assess the scale at which sage-grouse selected brood-rearing habitat in our study area, and 3) create a predictive habitat model that could be applied across our large study area to …
Centers Of Cultural Gravity: Cultural Translation In Nublares, William Foster Carr
Centers Of Cultural Gravity: Cultural Translation In Nublares, William Foster Carr
Theses and Dissertations
In the novel Nublares, Antonio Pérez Henares presents a caveman who typifies the modern, fragmented subject. The protagonist, Ojo Largo, a hybrid child of various cultures, crosses the boundaries between those cultures and negotiates the in-between space as a cultural translator. The concept of the fragmented, hybrid self reflects modern cognitive science. Daniel Dennett's Multiple Drafts model of consciousness presents a fragmented self characterized by "disaggregated agency," a subject consisting of the center of gravity between disparate mental processes and accumulated "narratives." Taking this model as point of departure, this thesis finds a consensus between three novels of prehistory, …
Microfluidic Devices With Integrated Sample Preparation For Improved Analysis Of Protein Biomarkers, Pamela Nsang Nge
Microfluidic Devices With Integrated Sample Preparation For Improved Analysis Of Protein Biomarkers, Pamela Nsang Nge
Theses and Dissertations
Biomarkers present a non-invasive means of detecting cancer because they can be obtained from body fluids. They can also be used for prognosis and assessing response to treatment. To limit interferences it is essential to pretreat biological samples before analysis. Sample preparation methods include extraction of analyte from an unsuitable matrix, purification, concentration or dilution and labeling. The many advantages offered by microfluidics include portability, speed, automation and integration. Because of the difficulties encountered in integrating this step in microfluidic devices most sample preparation methods are often carried out off-chip. In the fabrication of micro-total analysis systems it is important …
Microflora Of Traditional Mexican Corn Masa And Its Effect On Folic Acid Degradation, Stephen J. Adolphson
Microflora Of Traditional Mexican Corn Masa And Its Effect On Folic Acid Degradation, Stephen J. Adolphson
Theses and Dissertations
Many Mexican women consume inadequate amounts of folic acid. Fortification of the corn tortilla could be an effective way to help increase the folic acid levels among the Mexican population. Previous studies have shown significant folic acid losses in fortified tortilla dough (masa) as it is held before baking. This loss in folic acid could be due to degradation by lactic acid bacteria naturally present in the masa. The microflora of traditionally made nixtamalized corn masa from six tortilla mills in Guadalajara, Mexico were isolated and characterized, and their effect on folic acid content was evaluated. Isolated bacteria were identified …
Model Development And Application Of Molecular Simulations For The Study Of Proton Transport In Bulk Water And For The Prediction Of Dipole Moments Of Organic Compounds, Abhishek Asthana
Theses and Dissertations
The present work demonstrates the application of molecular simulations (MD) in two different areas: proton transport in bulk water and estimation of the dipole moment of polar organic compounds. In both areas, relatively few successful and robust methodologies exist. In the first part, a new polarizable water model is developed for MD simulations of the proton transport process. The model was parametrized from a combination of quantum chemical calculations and experimental water properties. The model was implemented in MD simulation studies of liquid water at room temperature, as well as with excess protons. For pure water the model gave good …
Mom Blogs: Portrayals Of Contemporary Mothering Standards, Styles, And Secrets, Angela Nuttall Ward
Mom Blogs: Portrayals Of Contemporary Mothering Standards, Styles, And Secrets, Angela Nuttall Ward
Theses and Dissertations
Internet use is a routine element of daily life in the early 21st century for many middle-class Americans. Today, millions of middle-class American mothers read and write online web-logs detailing motherhood and domestic life and mom blogs, formerly known as "mommy blogs," facilitate substantial economic activity. Participants collectively invest millions of hours in these blogs, sharing information and experiences, and offering each other validation and support. The present qualitative study of American mom blogs uses traditional grounded theory methods as well as Netnography techniques to investigate the thematic content found in the publicly posted text of 25 different mom blogs …
Alteration Of Behavior By Desert Bighorn Sheep From Human Recreation And Desert Bighorn Sheep Survival In Canyonlands National Park: 2002 - 2010, Kanalu K. Sproat
Alteration Of Behavior By Desert Bighorn Sheep From Human Recreation And Desert Bighorn Sheep Survival In Canyonlands National Park: 2002 - 2010, Kanalu K. Sproat
Theses and Dissertations
Human encroachment into wilderness areas can influence the persistence of wildlife populations by decreasing and degrading habitat, displacement, and decreasing survival. For bighorn sheep (Ovis canadensis), some human activities are detrimental, causing both physiological stress and habitat abandonment. Between 1979 and 2000, human recreation has increased over 300% in areas occupied by desert bighorn sheep (O. c. nelsonii) in southeastern Utah. We investigated if an increase in human activity in areas used by bighorns affected their behavior. We observed 34 bighorn sheep using focal-animal sampling for >14 hrs to compare time spent grazing and scanning between areas of high and …
Acid-Base Catalysis In Proton-Coupled Electron Transfer Reactions (Pcet): The Effects Of Brönsted Bases On The Oxidation Of Glutathione And Hydroquinone, Ramos Jonnathan Medina
Acid-Base Catalysis In Proton-Coupled Electron Transfer Reactions (Pcet): The Effects Of Brönsted Bases On The Oxidation Of Glutathione And Hydroquinone, Ramos Jonnathan Medina
Theses and Dissertations
This thesis presents the results and discussion of the investigation of the effects of Brönsted bases on the kinetics and thermodynamics of two proton-coupled electron transfer processes: the mediated oxidation of glutathione and the electrochemical oxidation of hydroquinone. Proton-coupled electron transfer (PCET) is the name given to reactions that involve the transfer of electron(s) accompanied by the exchange of proton(s). PCETs are found in many chemical and biological processes, some of current technological relevance such as the oxygen reduction reaction in fuel cells, which involves the transfer of four electrons and four protons (4e-, 4H+); or the splitting of water …
Necessary And Sufficient Informativity Conditions For Robust Network Reconstruction Using Dynamical Structure Functions, Vasu Nephi Chetty
Necessary And Sufficient Informativity Conditions For Robust Network Reconstruction Using Dynamical Structure Functions, Vasu Nephi Chetty
Theses and Dissertations
Dynamical structure functions were developed as a partial structure representation of linear time-invariant systems to be used in the reconstruction of biological networks. Dynamical structure functions contain more information about structure than a system's transfer function, while requiring less a priori information for reconstruction than the complete computational structure associated with the state space realization. Early sufficient conditions for network reconstruction with dynamical structure functions severely restricted the possible applications of the reconstruction process to networks where each input independently controls a measured state. The first contribution of this thesis is to extend the previously established sufficient conditions to incorporate …
There Is A Beginning, Catherine Stark
There Is A Beginning, Catherine Stark
Theses and Dissertations
Science and nature inspire me to create. I have always found a unique beauty in abstracted views of organic matter. I have built a visual vocabulary for my imagery through examinations of scientific images from topography and biology. In addition, my responses to the natural environment inform my abstract, expressionistic, mixed media paintings. Using oil paint in a nontraditional way, I rub, brush, and manipulate paper surfaces to create subtle texture and color. Then, I add a vast range of materials such as resin, varnish, and enamel to build depth and layers. My works suggest actual surfaces in nature and …
Ciliary Neurotrophic Factor Signaling In The Magnocellular Neurosecretory System : Mechanisms Of Neuronal Survival And Sprouting, Jason Michael Askvig
Ciliary Neurotrophic Factor Signaling In The Magnocellular Neurosecretory System : Mechanisms Of Neuronal Survival And Sprouting, Jason Michael Askvig
Theses and Dissertations
While it is well-known that ciliary neurotrophic factor (CNTF) promotes the survival of a myriad of neuronal phenotypes, little is understood on the specific CNTF-induced neuroprotective mechanisms in the central nervous system (CNS). Elucidation of these mechanisms may provide insight that would assist in the development of future therapeutic strategies. Therefore, the goal of my research is to determine the mechanisms underlying the neuroprotective effects of CNTF within the rat magnocellular neurosecretory system. The central hypothesis of my research is that CNTF acts as both a neuronal survival and sprouting factor for hypothalamic magnocellular neurons in vitro and in vivo. …
Mental Health Treatment For Children And Adolescents: Cost Effectiveness, Dropout, And Recidivism By Presenting Diagnosis And Therapy Modality, David Fawcett
Theses and Dissertations
As many as one in five children and adolescents may suffer from a mental health disorder, yet there are barriers that often prevent children from receiving optimal treatment. The current study explores the influence of practitioner license type, therapy modality, diagnosis, age, and gender on mental health therapy for children and adolescents. Data was provided by Cigna, a leading health care insurance provider in the United States. Participants include 106,374 boys (53.2%) and 93,753 girls (46.8%) ages 3 to 18 (M = 12.1, SD = 3.9) who were treated in outpatient facilities throughout the United States of America. Results indicate …
Ige Enhances B Cell-Derived Exosomal Induced T Cell Proliferation, Brooks Keith
Ige Enhances B Cell-Derived Exosomal Induced T Cell Proliferation, Brooks Keith
Theses and Dissertations
For many years it has been known that the injection of antigen bound to an antibody leads to more than a 1000-fold increase in antigen specific antibody response. This observation holds true for IgE, which is dependent upon CD23 expression, as this enhancement is not present in mice deficient in CD23. It also has been shown that when mice are injected with IgE-antigen complexes also display an increase in antigen specific T cell proliferation. While there are published studies that demonstrate a role for B cell derived exosomes in the activation and proliferation of T cells, none have focused upon …