Digital Commons Network^™

Chemical Characterization Of Meat Related To Animal Diet, Rossarin Tansawat

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

There is currently much interest in increasing health benefits from consuming nutritious food, including beef. Plant secondary compounds (PSC) such as tannins or saponins in various forages have an influence on animal nutrition and health, depending on the type of PSC and the amount consumed. However, relatively little is known about effects of PSC on meat color, flavor, and nutritional value. Thus, additional information is needed to better understand and to develop new animal feeding regimes for optimum animal growth, meat flavor, and meat nutritional quality.

In the first study, grain- vs. pasture-fed beef rib steaks were evaluated. The objective …

Assessments Of An Exogenous Proteolytic Enzyme In Beef Steer Diets To Improve Growth Performance And Ruminal Fermentation, Juan Manuel Vera

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A series of experiments were conducted to investigate the effects of adding an exogenous proteolytic enzyme (EPE) on growth performance and ruminal fermentation characteristics of beef steers fed growing and finishing diets containing 30% dried distillers grains with solubles (DDGS).

In the first experiment, 48 beef steers were divided into two treatments: DDGS diets with and without EPE. Dry matter intake (DMI) was increased (P = 0.02) by the addition of EPE, but neutral detergent fiber (NDF) digestibility was decreased on the growing phase. For the finishing phase, average daily gain ( …

Microfinance: A Tool For Poverty Reduction?, Kirsten Leikem

Senior Honors Projects

I never expected my first experiences with course content related to my majors to be so traumatic. A young 19 year old, it seemed that every class I attended accosted me with the existence of yet another problem. War, government, education, climate change… The problems were massive and all seemed intractable. One particular “problem” that plagued me was global poverty; how could one billion people in this world live on less than one dollar a day? The theories were numerous, and the classroom discussion seemed a far cry from the reality of so many people living in extreme poverty. I …

Identifying The Relationship Between Benzene Exposure And The Development Of Acute Myeloid Leukemia, Jacqueline G. Tally

Senior Honors Projects

My interest in epigenetic carcinogenesis-related research stems from both academic and personal experiences. I have come to recognize the significance of environmental chemical exposures in the development of cancer through my studies in nursing, and nutrition and food science. I am particularly interested in the epigenetics of acute myeloid leukemia (AML) because I am an AML survivor.

AML is a rare and highly malignant cancer. It is estimated 13,780 new cases of AML will be identified in theUnited Statesthis year with a 74% mortality rate (calculated 10,200 deaths/13,780 new cases). AML develops from alterations in the survival and proliferation of …

Perceptions Of Barriers That Inhibit African American Women And Adolescent Girls From Participation In Physical Activity, Sonya Daniels Walker

UNLV Theses, Dissertations, Professional Papers, and Capstones

This study examined the barriers to leisure time physical activity for African American women and their adolescent daughters. Six mother-daughter dyads were interviewed who have access to physical activity opportunity. Three of the dyads participated in a follow-up focus group. A qualitative research design that utilized a grounded theory approach identified two themes for the women and two themes for the girls. Themes for the women include influence of culture and low physical activity IQ. Sub-themes of influence of culture are (a) hair and (b) body image. Sub-themes of low physical activity IQ are (a) mommy guilt, (b) perception of …

Outlet Patronage In On-The-Go Consumption: An Analysis Of Patronage Preference Drivers For Convenience Outlets Versus Traditional Retail Outlets, Raphael Heider, Sabine Benoit

Research Collection Lee Kong Chian School Of Business

This study investigates patronage preferences of consumers who purchase and consume food and beverages while they are on-the-go (on-the-go consumption). The focus is on the drivers of patronage preferences for convenience outlets versus traditional retail outlets. A literature based model of patronage preferences is developed in this paper. It is tested based on data collected from a Dutch online sample (n=669) through binary logistic regression. The results reveal that significant relationships exist between patronage preferences in on-the-go consumption and the assortment offered as well as the opportunity to consume products without effort. Moreover, significant relationships between patronage preferences and consumers' …

Assessing Ongoing Sources And Fate Of Dissolved Polychlorinated Biphenyls (Pcbs) In A Stream, Viet Dang

All Dissertations

Polychlorinated biphenyls (pcbs) contamination remains a concern due to their persistence and the risk to human health associated with them. Once released into the environment, these substances are mainly associated with sediment particles and sediment organic carbon matter. They bioaccumulate in organisms via contaminated food and only a small faction is desorbed from sediment into the water column. Given the discontinuity of active discharge, pcbs are currently entering the water via groundwater inputs, soil erosion, and/or ongoing leakage from the point source. It is the dissolved form that 1) can be either absorbed by biofilm attached to stream leaves, which …

Biology, Histopathology, And Improvements In Axenic Culture Of Labyrinthula Terrestris, Causal Agent Of Rapid Blight Of Cool-Season Turfgrasses, Kirthi Kiran Yadagiri

All Dissertations

Rapid blight is a disease of cool-season turfgrasses caused by Labyrinthula terrestris. Disease symptoms include water-soaked lesions, yellowing and browning of foliage, and coalescing patches of dead turf. L. terrestris belongs to a group of marine microorganisms in the kingdom Chromista (also known as Stramenopila). Morphological characteristics of Labyrinthula spp. include spindle-shaped vegetative cells that move in an ectoplasmic network. The biology and pathology of L. terrestris is not clearly understood; therefore, the ultrastructure, life cycle, and histopathology of L. terrestris were investigated. In addition, improvements in axenic culture and long-term storage methods were made to better culture L. terrestris. …

Timing Of Exposure To Toxic Tall Fescue: Effects On Beef Cattle Reproduction, Matthew Burns

All Dissertations

Tall fescue [Schedonorus phoenix (Scop.) Holub] is a native grass of Europe and was not widely used in the U.S. until the early to mid 1900's. Toxic tall fescue (E+) is the predominate, cool-season forage used in beef cattle production in the southern U.S., but grazing this forage is known to negatively impact growth and may impair reproductive performance. Two- and 3-yr old (young) beef cattle respond differently to synchronization protocols and have higher energy requirements compared with mature cows under normal management conditions. Interestingly, limited data indicate that young cattle reproductive performance is negatively impacted to a greater extent …

Oregon Nonprofit Sector Report: The State Of The Nonprofit Sector In Oregon, Andreas Schröer, Dahnesh Medora, Anindita Mukerjee, Greg Wallinger

The Nonprofit Institute Research

This is the first Oregon Nonprofit Sector Report (ONSR). It is co-produced by Portland State University’s (PSU) Institute for Nonprofit Management (INPM), which is part of the Center for Public Service, and the Nonprofit Association of Oregon (NAO). The ONSR team began tracking sector-related data in 2010. In addition to tracking existing data, the team conducted a survey in February 2012 to gather information important to accurate and current sector reporting.

This report focuses on three questions:

• What is the size and scope of the nonprofit sector in Oregon?
• How can the relative health of the nonprofit sector be described? …

Language And Swallowing Intervention In Children With Cerebral Palsy, Meghan Serlin

Research Papers

No abstract provided.

Border Hispanics’ Physical Activity Improvement In A Chronic Disease Prevention Program, Lu Xu

Theses and Dissertations - UTB/UTPA

In seeking of effective prevention programs to improve physical activities, we want to examine the factors related to physical activities improvement in Alliance for a Healthy Border, a chronic disease prevention program with pre-post-post evaluations through 12 federally qualified community health centers serving primarily Hispanics in communities along the U.S.- Mexico border. Logistic regression was performed to examine the association between physical activity and twenty predictors at baseline. Multinomial regression was used to examine the determinants of physical activities improvement at two time points: program end and post six-months. Socio-demographic, baseline health condition factors, and determination of doing physical activity …

Early Season Population Dynamics And Residual Insecticide Effects On Bird Cherry-Oat Aphid, Rhopalosiphum Padi In Arkansas Winter Wheat, Beven Mcwilliams

Graduate Theses and Dissertations

Bird cherry-oat aphid is a common pest of Arkansas winter wheat. This aphid vectors barley yellow dwarf virus which may cause extensive crop damage and yield loss when wheat is infested by virulent aphids in the fall. Some suggest this damage may be avoided using insecticide seed treatments if growers are unable to delay planting, as is recommended. Field population dynamics of bird cherry-oat aphid during fall 2009 and 2010 was assessed through random sampling of whole plants and pan trapping methods to evaluate aphid immigration. The field plots were divided into four subplots treated with a systemic insecticide seed …

Lameness Associated With A Possible Neural Problem In The Lower Spinal Cord Of Chickens, Gallus Gallus, Gurueswar Nagarajan

Graduate Theses and Dissertations

Since the second half of the twentieth century lameness in broiler chickens has been known to be caused by different types of disorders, however the etiology of several type of lameness remain unknown. Because of the intense selection of broilers for rapid growth, some birds are more prone to physiological insults resulting in lameness. This study focuses on possible neural problems in the lower spinal cord associated with lameness in broilers. Broilers were raised in pens with wire floors and provided with food and water ad libitum. Three groups of birds 1) birds displaying a normal gait (Controls), 2) lame …

Utilization Of Natural Green Tea And Grape Seed Extracts And Nisin To Reduce Conventional Chemical Preservatives And To Inhibit The The Growth Of Listeria Monocytogenes In Ready To Eat Low And High Fat Chicken And Turkey Hotdogs, Amara Venkata Sunil Perumalla

Graduate Theses and Dissertations

Ready-to-eat meat (RTE) products such as hotdogs represent a popular segment in convenience food purchases. Increased demand has led the processors to extend the shelf life by minimizing lipid oxidation and post-processing contaminants such as Listeria monocytogenes. There is a growing interest in the food processors and consumers regarding the use of natural alternatives in place of synthetic food additives to control the growth of foodborne pathogens and (or) lipid oxidation. In recent years, green tea (GTE) and grape seed extracts (GSE) are increasing choices as they have demonstrated antioxidant as well as antimicrobial properties in various food applications. …

Recombinant Protein Production In Bacillus Species, Isolation And Methionine Production In Methionine-Producing Microorganisms, Suwat Saengkerdsub

Graduate Theses and Dissertations

Linoleic acid isomerase (LAI) is the enzyme that converts linoleic acid to conjugated linoleic acids (CLAs) which appear to be capable of lowering cancer risk and enhancing immunity. There is an interest in developing commercial processes for the production of single isomers of CLA by biotransformation of LA using microbial cells and enzymes. However, the evaluation of these strains suggest that growth and LA isomerase production levels by these anaerobes are insufficient to support economic commercial production of single CLA isomers. A better alternative is to clone the isomerase gene and to generate new production strains using recombinant technology. Bifidobacterium …

Herbicide Resistance Mechanism(S) In Italian Ryegrass (Lolium Perenne Ssp. Multiflorum) Populations In The Southern United States, Reiofeli Algodon Salas

Graduate Theses and Dissertations

Italian ryegrass is a principal weed problem in wheat production fields in the Southern US. Resistance to herbicides diclofop, mesosulfuron, and pinoxaden among ryegrass populations has been reported. Glyphosate-resistant Italian ryegrass populations were identified in Desha County, Arkansas. This research aimed to 1) determine resistance patterns to ACCase (diclofop and pinoxaden) and ALS (imazamox, mesosulfuron, and pyroxsulam) herbicides among Italian ryegrass populations from the southern US; 2) determine if cytochrome P450-mediated enhanced herbicide metabolism contributed to resistance; and 3) elucidate the resistance mechanism to glyphosate in four Arkansas populations (Des03, Des05, Des14, and D8). For objective 1, 30 accessions from …

Perceived Impact Of Quality In A 21st Century Community Learning Center Out-Of-School Time Program: A Case Study, Patricia Ann Wright

Graduate Theses and Dissertations

Concern for the safety, education and well-being of children during out-of-school time is helping to change the landscape and priorities of families, educators and policy-makers. Changes in family structure and society have presented the need for quality out-of-school time programs. The changing family structure caused by both parents working outside the home, the advent of the single-parent household, the necessity of federally mandated standardized testing for student achievement, certain criminal activities and the expanding population of children have contributed to the question of how to protect children and enrich their lives during out-of-school time hours. The purpose of this intrinsic …

Effects Of Respiratory Vaccination Timing And Hormonal Growth Implant On Health, Performance, And Immunity Of Newly Received Stocker Calves, Kimberly Denise Poe

Graduate Theses and Dissertations

Stress alters the immune system and vaccination during this time may reduce vaccine response; whereas, growth implants may shift metabolism to enhance tissue deposition in exchange for energy required for immune response during bovine respiratory disease (BRD) challenge. This study was conducted to determine the effects of pentavalent respiratory vaccination timing with or without a hormonal growth implant on arrival (d 0) on health, performance, complete blood count, and vaccine response in high&ndashrisk, newly received stocker calves during a 42&ndashd receiving period. Crossbred bull and steer calves (n = 385) were weighed (initial BW = 202 ± 4.1 kg), stratified …

Effects Of Management Strategies And Molecular Breeding Values On Cattle Performance And Carcass Traits, Benjamin Collins Williamson

Graduate Theses and Dissertations

Forty-eight Gelbvieh x Angus steers (265 ¡À 40 kg) were utilized to determine the relationships among molecular breeding values (MBV), steer performance, and carcass traits. Body weight (BW), hip height (HH), hip width (HW), exit velocity (EV; rate at which steers exited the squeeze chute and traversed 1.8 m) and body ultrasound measurements of steers were recorded at d 0, 93 and 154 of grazing mixed stockpiled endophyte-infected and -free tall fescue. Tissue samples were collected for genomic profiling (Igenity, Merial Limited, Duluth, GA). Steers were transported to the Oklahoma State U fed for 159 d, harvested and carcass parameters …

Use Of Standardized Mastery Content Assessments Given During The First Year Of A Baccalaureate Nursing Program For Predicting Nclex-Rn Outcomes, Deanna Jan Emory

Graduate Theses and Dissertations

The purpose of this study was to evaluate the relationship between standardized content specific mastery assessments and NCLEX-RN outcomes. Three content-specific standardized assessments testing Fundamentals, Pharmacology and Mental Health concepts were used to explain the dichotomous NCLEX-RN outcome of pass or fail. The three assessments were developed by Assessment Technologies Institute, LLC (ATI). The assessments were administered to baccalaureate nursing students (N = 119) during the first year of a nursing program in one public university over a period of five consecutive semesters. Group comparisons between those passing and those failing NCLEX-RN on the first attempt and correlations were calculated …

President's Newsletter, Brooks Keel

President's Newsletter

No abstract provided.

Evaluation Of Electrophoretic Protein Extraction And Database-Driven Protein Identification From Marine Sediments, Eli K. Moore, Brook L. Nunn, Jessica F. Faux, David R. Goodlett, H. Rodger Harvey

OES Faculty Publications

Intact proteins comprise a major component of organic carbon and nitrogen produced globally and are likely an important fraction of organic matter in sediments and soils. Extracting the protein component from sediments and soils for mass spectral characterization and identification represents a substantial challenge given the range of products and functionalities present in the complex matrix. Multiple forms of gel electrophoresis were evaluated as a means of enhancing recovery of sedimentary protein before proteomic characterization and compared with a direct enzymatic digestion of proteins in sediments. Resulting tryptic peptides were analyzed using shotgun proteomics and tandem mass spectra were evaluated …

The Effect Of A Bcaa Supplement With And Without Cho On Performance In Recreationally Trained Cyclists, Alaine Carleton Mills

College of Graduate Studies: Theses & Dissertations

The purpose of the current study was to examine the effect of a branched- chain amino acid (BCAA) supplement with and without carbohydrate (CHO) on performance in competitive cyclists. Subjects were recruited from the GSU cycling team (n=6). Each subject's maximal oxygen uptake (VO2 max) was determined on an electrically braked cycle ergometer using a graded exercise test. In a randomized, double-blind, crossover design, subjects received one of three supplements prior to exercise: BCAA-1 teaspoon BCAA powder (Optimum Nutrition ® Instantized BCAA 5000mg Powder containing 2.5g leucine, 1.25g isoleucine, and 1.25g valine), mixed with 500 ml of a zero calorie …

Influence Of Dietary Fibers And Whole Grains On Fecal Microbiota During In Vitro Fermentation, Junyi Yang

Department of Food Science and Technology: Dissertations, Theses, and Student Research

There has been a dramatic increase in obesity, which presents a risk of many chronic health problems. Recent studies have shown that obese individuals harbor an abnormal gut microbiota (dysbiosis), which has sparked interest in the gut microbiota as a target for weight management. Dietary fiber and whole grains that can be metabolized by gut microbiota have been shown to promote the growth of beneficial bacteria in the gut. Increased consumption of dietary fiber and whole grains may improve host / gut microbiota interactions in obesity and other metabolic diseases by normalizing gut dysbiosis. The present thesis describes two research …

Characterization Of Igg And Ige Binding To Parvalbumin Derived From Commercially Important Fish Species, Poi-Wah Lee

Department of Food Science and Technology: Dissertations, Theses, and Student Research

Parvalbumin is a calcium-binding muscle protein that is present in all vertebrates. Despite being a pan-allergen in fish and frog, fish-specific IgE and antiparvalbumin IgG antibodies displayed varying cross-reactivity among fish species. In this research, the parvalbumin-binding characteristics of several antibodies were investigated, including 3 IgG antibodies against frog, carp, and cod parvalbumins, and human IgE.

By immunoassay and IgG-immunoblotting, 3 antiparvalbumin antibodies revealed inconsistent specificity among 29 raw fish muscle extracts, which may be partially attributed to the decreased levels of fish muscle parvalbumin from anterior to posterior positions. Parvalbumin-binding by antibodies was unaffected in 112 days of frozen-stored …

Violence And Political Incivility, David B. Lyons

Faculty Scholarship

The charge to our panel refers to "the deterioration of the political conversation," to "deep ... divisions in society," and to recent violence- especially the tragic events in Tuscon. It asks us to identify "the virtues required.for our common life as citizens in a democracy and for civil democratic conversation." I shall offer observations and conjectures on each issue, stressing the historical background.

Let me suggest, first,. that the nonconstructive and increasingly abusive character of our political discourse may be relatively mild manifestations of an even more troubling malaise of our society- commonplace unlawful violence. I wish to draw your …

A Comparison Of Principals’ And Parents’ Perceptions Of Family Engagement In Schools, Karen Ash Frost

Dissertations

In an age of educational accountability, the ability of a school leader to create a strong community partnership with parents is not only seen as important, but vital for improving school success School leaders are expected to create an atmosphere conducive for student learning and parent involvement. In order to build a school where families are engaged and eager to participate, the principal must strive to understand what parents think about family engagement in schools, and compare it to their own perceptions in order to create a strong partnership.

The purpose of this study is to compare principals’ and parents’ …

Tripping With Stephen Gaskin: An Exploration Of A Hippy Adult Educator, Gabriel Patrick Morley

Dissertations

For the last 40 years, Stephen Gaskin has been an adult educator on the fringe, working with tens of thousands of adults in the counterculture movement in pursuit of social change regarding marijuana legalization, women’s rights, environmental justice issues and beyond. Gaskin has written 11 books about his experiences teaching and learning with adults outside the mainstream, yet, he is virtually unknown in the field of adult education. He lists his religion as hippy; he is a member of the Counterculture Hall of Fame (inducted 2004), a convicted felon, a United States Marine, a Korean War combat veteran, and a …

Parenting Stress, Behavior, Treatment Satisfaction, And Hope In Caregivers Of Children With Developmental Disabilities, Paige Cristin Schultz

Dissertations

Parenting stress has been shown to be related to both negative parenting behaviors and child behavior problems in the general population as well as with children with developmental disabilities. With the majority of children with developmental disabilities participating in multiple treatments, little is known about the effect of treatment satisfaction on caregivers. Hope has also been shown to reduce stress in caregivers, yet little research has examined this relationship with respect to parenting stress specifically or in parents with children with developmental disabilities. Treatment satisfaction has also been associated with less parenting stress in other populations; however, no study has …