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Investigation And Calculation Of Dose Coefficients For Radionuclides Produced In A Spallation Neutron Source Using The Ensdf And Nubase Nuclear Databases, Yayun Song

UNLV Theses, Dissertations, Professional Papers, and Capstones

Dose coefficients are useful for risk assessment during the design and siting of accelerator-driven nuclear facilities including the Spallation Neutron Source. There are seventy-two radionuclides with half-lives equal to or greater than one minute that will be produced by the spallation of a mercury target for which no published dose coefficients exist. Out of these seventy-two, twenty-four currently have conflicting published nuclear data in the Evaluated Nuclear Structure Data Files (ENSDF) and the NUBASE data files. In this research these twenty-four radionuclides have been studied. Because of missing ENSDF records, internal and external dose coefficients were determined for only six …

Development And Characterization Of Eukaryotic Biomimetic Liposomes, Bradley Jay Taylor

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study developed and characterized phospholipid vesicles, or liposomes, that mimic cell surfaces. Microemulsified liposomes contained biotinylated phosphatidylethanolamine, allowing them to be immobilized to avidin-coated glass. Laminin (LN), glycosphingolipids (GMl and GM3), and Escherichia coli's mechanosensitive channel of large conductance (EcoMscL) were embedded into liposome membranes. It was determined whether these embedded molecules exhibited their physiological roles of adhesion, cell recognition, and mechanosensation, respectively. Confocal laser scanning microscopy (CLSM) was employed to examine the interaction of fluorescently probed proteins, toxins, and bacteria with the immobilized microemulsified liposomes. Capture of individual and simultaneous multiple species of bacteria by GMl, GM3, …

Cultivation Of Mushroom Mycelia Using Whey Products As A Growth Substrate, Boyd S. Inglet

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

As part of a project designed to utilize common dairy waste products profitably, reconstituted dry whey permeate and delactosed whey were tested as growth substrates for mycelia of the edible mushroom Lentinus edodes. This mushroom was chosen because it is possible to profitably cultivate it due to its popular culinary appeal and perceived medical benefits.

Growth experiments were performed in petri dishes containing either reconstituted dry whey permeate or delactosed whey as a growth substrate, and the measured response was the size of the growing mycelia colony. When reconstituted dry whey permeate was utilized as a growth substrate, the …

Nutrition And Bone Density In Children With Cystic Fibrosis, Joanna K. Davidson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of these studies was to further research on bone density in children with cystic fibrosis, particularly as it pertains to nutritional parameters and care. The first paper presented a comparison of a group of 50 children with cystic fibrosis to a group of 32 control children. There were no significant differences between the groups in any of the pertinent bone density measurements. Serum 25(OH) vitamin D was positively correlated with spine density z score in the cystic fibrosis group.

The second paper, incorporating all of the information obtained from the first paper, describes an intervention study with the …

Parents' Knowledge And Attitudes About Immunization In India, Anne George

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Childhood immunization is acknowledged as being a crucial health intervention for children. Immunization rates of children may vary depending on their parents' knowledge and attitudes about the issue. The focus of this study is on parents' knowledge and attitudes about immunization, and employs Urie Bronfenbrenner's ecological systems theory. A questionnaire was administered to 233 parents in India to explore the issues of parental immunization knowledge and attitudes. Correlates of parental knowledge and attitudes that were explored included gender, education, respondents' immunization status, and children's immunization status. Sources of parental knowledge about immunization were also examined. Overall, parents in this sample …

The Role Of Deception In Mediating Relationship Involvement Of Couples Interacting On The Internet: Stages Of Intimate Formation, Dustin W. Edgerton

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A vast majority of individuals involve themselves in an intimate relationship at one time or another. This study looks at a new, but increasing, forum of relationship development, that of the Internet. More specifically, this study addresses various stages of Internet relationship development, and deception individual 's use during the process of forming and maintaining these relationships.

This research gathered quantitative and qualitative information from 134 individuals involved in online relationships. The quantitative analyses provided only a few significant findings and it is suggested that the current methods of measuring deception are inadequate and do not appear to represent the …

Decentralized Control For Uav Path Planning And Task Allocation, Matthew C. Lechliter

Graduate Theses, Dissertations, and Problem Reports (ETD)

The effort of this research is to move toward enabling Unmanned Air Vehicles to fly in autonomous formations with intelligent mission planning capabilities. In particular, UAVs will be able to autonomously perform path planning and task allocation. During missions, the UAVs must be able to avoid threats and no-fly zones while still reaching their target optimally in time.;A path planning and task allocation approach was first developed that treats the problem as a Multi-dimensional, Multiple-Choice Knapsack Problem. Paths are selected and task assigned while minimizing the UAV team's overall mission cost. Next, a SIMULINK-based centralized simulation environment was created. This …

Development Of Immobilized Metal Affinity Chromatography For The Isolation And Selective Enrichment Of Phosphopeptides, Erica Sims Jackson

Graduate Theses, Dissertations, and Problem Reports (ETD)

Protein structure and function are often regulated by covalent modifications to the protein. One of the most important of these modifications is phosphorylation, which can control many cellular processes. The sites of phosphorylation must be determined to fully understand the protein's function and regulatory events, which can be challenging because of the low stoichiometry of the phosphorylated regulatory proteins.;Several strategies for enrichment of phosphopeptides prior to analysis have been developed, however, Immobilized Metal Affinity Chromatography (IMAC) is the most widely used method. Online IMAC-ESI-MS has been developed with ammonium hydroxide as the elutor. Gradient elution from the IMAC column demonstrates …

Grandparental Visitation: Its Evolution In New York State, Elliott Scheinberg

Cardozo Public Law, Policy & Ethics Journal

The article examines the legal framework governing grandparental visitation rights, emphasizing the tension between statutory provisions granting grandparents standing to seek visitation and the courts' reliance on the "best interests of the child" standard. It highlights how judicial decisions have evolved to balance grandparental rights with parental autonomy, particularly in cases involving deceased parents or strained family relationships. The analysis underscores the importance of case-by-case evaluations and the limited scope of grandparental rights, especially when adoption or significant changes in family circumstances are involved.

Nobody's Ever Asked Me That Before: Middle School Students Talk About Motivation To Achieve In School Contexts, Erika Daniels Edd

Dissertations

The purpose of this study was to explore whether or not a connection exists between students' school contexts and their academic and social choices by listening to the voices of first year middle school students. The intent of this study was to provide teachers with a way to reconceptualize adolescents as learners. Research suggests that there are two distinct approaches to the study of motivation. Some researchers believe that motivation can be externally enacted through exams, assessments, and other accountability measures. Other researchers believe that motivation is internally generated through the relationships students build, through their beliefs about learning, and …

Alcalá View 2004 20.08, University Of San Diego Publications Office

Alcalá View (1985-2006)

Scoping Out New Directions; A Doo-Wop Dining Experience; Cool Control Over the Feverish Final Sprint of Spring; A Renaissance Man Turned Ramblin' Man; It's A Date! 50th Anniversary of Brown v. Board of Education; SEA Snippets; The Pomp and Circumstance of Commencement; Service Awards; No Time for a Siesta at This Year's Fiesta; Community Event; Sports Banquet; Women in Leadership; Temporary Pool; Milestones; Classifieds

Applying Principles Of Crossbreeding, Dale Zobell, C. Kim Chapman

All Current Publications

Crossbreeding can be a powerful tool to improve the productivity and profitability of a beef cattle operation when it is used correctly. This fact sheet explains considerations that need to be made for successful production and profitability.

A Church Crisis: A Rhetorical Criticism Of Communication Arguments From Proponents Of Both Sides Of The Homosexual Movement In The Christian Church, Garland Brent Wallace

Electronic Theses and Dissertations

The increased levels of homosexual discussion in mainstream media culture have aroused opinion diversity in both secular and religious circles. The case of Bishop Gene Robinson has brought the issue of homosexuality in the priesthood to the forefront. However, the main issue does not rest on the issue of homosexuality but rather on the inspiration, validity, and authority of the Bible as scripture. After the evaluation of two pieces of rhetoric, including an interview given by Bishop Gene Robinson on a local radio broadcast and a speech given by B. L. Mauser concerning homosexuality as sin, Kenneth Burke's pentad will …

Alternative Future Growth Scenarios For Conserving Open Space Along Utah's Wasatch Front: A Case Study For The Mountain Land Association Of Governments, Richard E. Toth

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Over the past 20 years, rapid suburban and second-home development along Utah's Wasatch Front has threatened to irreversibly alter the region 's character and quality of life. This rapid development has raised concern among federal, state, county and community leaders with respect to the protection of surface and subsurface water; public health, safety and welfare; public services and infrastructure, and open space. The major areas being developed include the valley edges and bottom lands, riparian zones, agricultural lands and bench areas. Since most of these areas are under private ownership, they are highly vulnerable to an array of development activities.

Practicum Students' Beliefs About Developmentally Appropriate Practice For Infants And Toddlers, Kaelin Olsen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study examined practicum students' beliefs and experiences about developmentally appropriate practice (DAP) prior to a practicum experience and following it. Another goal was to examine differences between the practicum students' majors and their pre- and posttest DAP beliefs and experiences scores. Finally, this investigation sought to determine the differences between practicum students' DAP beliefs and experiences and the amount of time they spent in a practicum setting.

A total of 95 students completing a practicum in the Adele and Dale Young Child Development Laboratory in the infant (Group I) or the 2-year-old classroom (Group 2) participated in the study. …

Casein Supramolecules: Structure And Coagulation Properties, Bonney S. Oommen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The changes in quaternary structure of casein supramolecules with various physical and chemical treatments were studied using transmission electron microscopy, and a model to account for the changes is put forth. The effects of casein structure on coagulation properties were also studied. The sample preparation for transmission electron microscopy involved physical methods of fixation and flash freeing to preserve the structure of caseins in the sample.

The structure of caseins in sodium and calcium caseinate varied with sodium caseinate not exhibiting any spherical structure as opposed to the spherical structure seen in calcium caseinate, non-fat dried milk and native milk. …

Power Distance Perceptions In Post-Soviet Russia: Understanding The Workplace Environment, Olga Kamenchuk

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The modem business economy is characterized by increased collaboration among different organizations across nation al boundaries. Post-Soviet Russia is one of the regions that is witnessing rapid economic growth and development of international business relations. Because of the challenges in intercultural communication the current study focuses on the problem of power distance, specifically in the workplace (in post-Soviet Russia).

A phenomenological perspective, based on qualitative methodology, guided this research into the meaning of power experiences for individuals. Symbolic interactionism was used as a research paradigm of the study to view humans as active participants of the workplace, who engage in …

Changes In Child Symptomatology Associated With Animal-Assisted Therapy, Catherine C. Woolley

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study examined the changes in symptoms of anxiety, depression, and social dysfunction associated with a history of child trauma after adding animal-assisted therapy (AAT) to conventional psychotherapy for adolescents living in a residential treatment facility in northern California. Using a quasiexperimental design, participants were followed over a period of nine weeks, with both groups completing the State-Trait Anxiety Inventory, the Beck Depression Inventory, an abbreviated version of the Beck Depression Inventory, and the Youth Self-Report, and residential staff completing the Youth Outcome Questionnaire at three time points. In addition, the treatment group completed state anxiety and depression assessments before …

Field Calibration Of The Float Method In Open Channels, Jorge Escurra

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Surface velocity coefficients were calculated at five locations in three different irrigation canals in Logan, Utah. First, the total flow' rate was measured using current meters and calculated cross-sectional flow area. Second , the surface velocity was measured using four trials of the float method , and the average float travel time was calculated for each location and measurement instance. The measurements were taken on different days for various water depths in the canals. Third, the surface and mean cross-sectional velocities were divided , yielding the surface velocity coefficient, for every measurement at each of the five locations. Several channel …

Computational Scattering Models For Elastic And Electromagnetic Waves In Particulate Media, Timothy Edwin Doyle

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Numerical models were developed to simulate the propagation of elastic and electromagnetic waves in an arbitrary, dense dispersion of spherical particles. The scattering interactions were modeled with vector multipole fields using pure-orbital vector spherical harmonics, and solved using the full vector form of the boundary conditions. Multiple scattering was simulated by translating the scattered wave fields from one particle to another with the use of translational addition theorems, summing the multiple-scattering contributions, and recalculating the scattering in an iterative fashion to a convergent solution. The addition theorems were rederived in this work using an integral method, and were shown to …

Role Of Iron In The Mechanism Of Asbestos-Induced Apoptosis In Human Lung And Pleural Target Cells, Aleksander Baldys

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Occupational exposure to asbestos has been associated with increased incidence of pulmonary interstitial fibrosis, mesothelioma of the pleura, and bronchogenic carcinoma. Although the mechanism by which asbestos causes cancer remains unknown, iron associated with asbestos is thought to play a role in the pathogenic effects of fibers.

The aim of this research was to examine and compare the asbestos-induced signaling phenomena in relevant human lung and pleural target cells, and to determine the role of iron from asbestos fibers in these events. Exposure of human airway epithelial (A549) cells, human pleural mesothelial (MET5A) cells, and normal human small airway epithelial …

Cattle As Grazing Management And Seed Dispersal Tools For Increasing Native Species Diversity On Great Basin Rangelands, Marina K. Whitacre

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A series of experiments evaluated: 1) the influence of seed intake and gut retention time on seed passage, recovery, and germinability; 2) fecal seeding and broadcast /trampling as techniques to incorporate seeds into a well-established Agropyron desertorum (Fisch.) Schult. stand in Skull Valley , Utah; 3) intensive grazing as a means to reduce Agropyron biomass and increase establishment and survival of seeded species; and 4) the recovery and germinability of seed extracted from dung collected from the field. Two shrubs (Artemisia tridentata Nutt. ssp. wyomingensis Beetle & Young and Atriplex confertifolia Torr. & Frem.), a grass (Elymus elymoides (Raf.) …

Acetylcholine Protection Of Adult Pig Retinal Ganglion Cells From Glutamate-Induced Excitotoxicity, Erica Wehrwein, Sean A. Thompson, Sylvie F. Coulibaly, David M. Linn, Cindy L. Linn

Peer Reviewed Articles

PURPOSE. To determine which glutamate receptor (GluR) subtypes are responsible for glutamate-induced excitotoxicity in cultured adult pig retinal ganglion cells (RGCs) and to characterize the neuroprotective effect of acetylcholine (ACh) on pig RGCs.

METHODS. Adult pig RGCs were isolated from other retinal tissue by a modified panning technique using Thy 1.1 antibody. Isolated RGCs were cultured in control media and media containing: glutamate, NMDA, or KA; glutamate and CNQX, MK-801, or AP-7; ACh, nicotine or muscarine; ACh and α-bungarotoxin (Bgt) or methyllycaconitine (MLA); and glutamate and choline or glutamate, choline, and MLA. To determine cell viability, cells were …

Length Of Stay After Vaginal Birth: Sociodemographic And Readiness-For-Discharge Factors, Marianne E. Weiss, Polly Ryan, Lisa Lokken, Magdalen Nelson

College of Nursing Faculty Research and Publications

Background: The impact of reductions in postpartum length of stay have been widely reported, but factors influencing length of hospital stay after vaginal birth have received less attention. The study purpose was to compare the sociodemographic characteristics and readiness for discharge of new mothers and their newborns at 3 discharge time intervals, and to determine which variables were associated with postpartum length of stay.

Methods: The study sample comprised 1,192 mothers who were discharged within 2 postpartum days after uncomplicated vaginal birth at a tertiary perinatal center in the midwestern United States. The sample was divided into 3 postpartum length-of-stay …

An Evaluation Of Submersed Aquatic Vegetation Transplanting Methods For Lake Pontchartrain Restoration, Donald Anthony Rodrigue Jr.

LSU New Orleans Theses and Dissertations

The general goals of this study were to evaluate transplant methods for Lake Pontchartrain submersed aquatic vegetation (SAV) restoration, and to compare survival and expansion of transplanted SAV among four sites. Two experiments were conducted from summer 2000 through spring 2001 at two north shore and two south shore sites in Lake Pontchartrain. Experiment 1 involved testing the effects of transplanting with matting, staples, exclosures, and interspecific interaction on survival and expansion of Ruppia maritima and Vallisneria americana transplants in Lake Pontchartrain. Experiment 2 involved testing the effects of transplanting with matting, staples, and plugs on Ruppia survival and expansion. …

Paper Session Ii-C - The Space Life Sciences Lab At The Kennedy Space Center: A Critical Facility For Future Space Flight, Scott Vangen, Holly Mills, Robert Ferl, Stan Starr, Debbie Wells

Space Congress® Proceedings

On November 19, 2003, Jim Kennedy, KSC Center Director, Winston Scott, former Astronaut and Director of the Florida Space Authority, Dr. Sam Durrance, Director of the Florida Space Research Institute, and Lt. Governor Toni Jennings, dedicated the Space Life Sciences Lab at the Kennedy Space Center. The SLS Lab is a world-class laboratory with all the capability and systems necessary to host International Space Station experiment processing as well as associated biological and life sciences research. Areas include Biotechnology, Microgravity, Space Agriculture, Biomedicine, Conservation Biology, and Microbial Ecology. This unique facility was constructed under a partnership between the State and …

Paper Session Ii-C - Nasa Hydrogen Research At The University Of Florida, Canan Balaban

Space Congress® Proceedings

In 2003 NASA Glenn Research Center awarded an 18 month, $7.92 million grant to Florida universities for hydrogen research. This program teams researchers from Florida universities with NASA Glenn and NASA Kennedy to form a powerful partnership.

The research program at the University of Florida focuses on the following areas:

o New and improved hydrogen production processes

o Hydrogen leak detection via laser instrumentation o Hydrogen leak detection via distributed micro-sensors

o Terrestrial and in-space cryogenic transport and storage

o High energy densified materials for hydrogen storage

o New propellants and cryofuels

o Education and outreach activities

A mobile demonstration …

Paper Session Ii-B - Strategies For Conducting Life Science Experiments Beyond Low Earth Orbit, Ronald L. Schaefer, Ingrid Rudolph-Angelich, Richard Mains, Darren Hughes, Lynn D. Harper, Gregory Leonard, Gregory K. Schmidt

Space Congress® Proceedings

Human exploration beyond low Earth orbit will require terrestrial life to survive and ultimately flourish in environments fundamentally different to those in which it has evolved. The effects of deep space and conditions on the surface of other planets must be studied to understand and reduce the risks to explorers, provide bioregenerative life support, and make full use of the broad research opportunities and scientific benefits offered by such unique environments. Though much is already known about biological adaptations to the space environment, key changes in terrestrial life may only be revealed over complete life cycles and across multiple generations …

Paper Session Ii-B - Progress Toward Electrostatic Radiation Shielding Of Interplanetary Spacecraft, Philip T. Metzger, Robert C. Youngquist, John E. Lane

Space Congress® Proceedings

Particle radiation remains a significant obstacle to human exploration of space. Passive (materials-based) shielding technology has made significant progress but continues to be a costly in-flight option due to the required mass. Magnetic shielding has not come of age because it requires superconducting coils that are not only heavier than passive shields but contain single-point failure mechanisms and remain a technological challenge. Electrostatic shielding has been largely rejected because repulsion of the protons would attract a cloud of electrons, neutralizing the shield, whereas concentric shells of shielding to repel both electrons and protons would be heavy and would require large …

Paper Session Ii-B - Bioregenerative Life Support Systems For Mars Missions, John C. Sager, Raymond M. Wheeler

Space Congress® Proceedings

Human space travel to Mars will require traveling further and staying longer in space than ever before. The traditional approach of stowing life support consumables (i.e., food, 0 2, and clean water) will be transport dependent and too costly, and regenerative technologies will be required. One approach would involve the use of bi ore generative life support systems, where plants would produce food, clean water, and 02 while removing C02, and microbial systems would process liquid and solid wastes. These systems might provide a small fraction (e.g., 5-25%) oflife support needs for early missions, but increase as surface outposts expand. …