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Articles 2521 - 2550 of 5173
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Why Kids Are 'Lovin' It': A Q Methodology Analysis Of The Appeal Of Mcdonald's, Erica Nelson Rivera
Why Kids Are 'Lovin' It': A Q Methodology Analysis Of The Appeal Of Mcdonald's, Erica Nelson Rivera
Theses and Dissertations
The dramatic rise in childhood obesity is a major concern nationwide. Unprecedented media exposure, drastically decreased time spent interacting as a family, and the consumption of calorie-dense foods are all heated topics of discussion with ties to weight gain. In this research, possible associations are examined between media, social groups and a favorite fast-food restaurant among children: McDonald's. Q methodology was used to analyze the various factors that draw children to McDonald's. With a theoretical background in social learning theory, this study had 29 children rank-order 30 photographs depicting elements of the McDonald's experience. Pictures included the most and least …
Exploring The Possibility Of Photosynthetic Plasticity In Agave Sensu Lato, John Anthony Huber
Exploring The Possibility Of Photosynthetic Plasticity In Agave Sensu Lato, John Anthony Huber
Theses and Dissertations
Crassulacean acid metabolism (CAM) provides desert plants with distinct advantages over the C3 and C4 photosynthetic pathways in harsh climates where water is scarce. CAM is, however more metabolically costly than C3 or C4 photosynthesis, and some plants, such as Mesembryanthemum crystallinum, facultatively utilize CAM when water is abundant, and water conservation unnecessary. In such situations, these plants behave akin to a C3 plant when photosynthesizing. CAM is divided into four phases, with each phase displaying unique metabolic processes. Certain changes, including changes in the timing of CO2 fixation, stable carbon isotope ratios, …
Deficient, Adequate And Excess Nitrogen, Phosphorus, And Potassium Growth Curves Established In Hydroponics For Biotic And Abiotic Stress-Interaction Studies In Lettuce, Douglas Keith Jacobson
Deficient, Adequate And Excess Nitrogen, Phosphorus, And Potassium Growth Curves Established In Hydroponics For Biotic And Abiotic Stress-Interaction Studies In Lettuce, Douglas Keith Jacobson
Theses and Dissertations
Mineral nutrients have marked effects on plant health by providing the building blocks for plant growth, as well as for mitigating abiotic and biotic stress factors, particularly disease development. Even if mineral nutrition field studies are conducted to study pest management, they are at the mercy of complex soil, water, and climatic conditions not amenable to strict experimental control. Therefore, a hydroponic method of growing lettuce was developed and growth curves were established for the macronutrients nitrogen (N), phosphorus (P), and potassium (K). Lettuce plants were grown at varying levels of each nutrient: 2.5, 5, 10, 20, 40, 80, 160, …
Using The Water-Energy-Food Nexus To Enhance Egypt’S Cooperation With Nile Basin Countries, Aly Taher Kheireldin
Using The Water-Energy-Food Nexus To Enhance Egypt’S Cooperation With Nile Basin Countries, Aly Taher Kheireldin
Theses and Dissertations
In the coming decades, the World will be facing severe challenges in terms of water, energy and food through increased water use, increased energy demand and increased food demand and shifting diets. Those challenges are foreseen to be amplified due to climate change effects. Egypt is a country struggling to achieve water, energy and food security, which are key issues in achieving national security. Egypt is facing another major challenge regarding its main water resource Nile River. Ethiopia is currently undergoing the construction of a huge dam on the Blue Nile which is the Grand Ethiopian Renaissance Dam (GERD). The …
Second-Chance Programs Addressing Early School Leavers: A Swoc Analysis Of An Intervention In A Marginalized Urban Area In Cairo, Nada Nabil George
Second-Chance Programs Addressing Early School Leavers: A Swoc Analysis Of An Intervention In A Marginalized Urban Area In Cairo, Nada Nabil George
Theses and Dissertations
The thesis explores the topic of second chance programs that are being provided to early school leavers living in poor urban areas. The purpose of these programs is to enable school learvers to compensate for the skills that were not attained for not going to school. The case study focuses on a program in the garbage village (Zabbaleen area) located in Mokattam area in Cairo, Egypt. This area was chosen because of the high rate of early school leavers, attributed to the requirement of their job (garbage collection) to support their families. The study focuses on a local NGO located …
Socioeconomic Status And Its Relationship To Educational Resources, Christene M. Sledge
Socioeconomic Status And Its Relationship To Educational Resources, Christene M. Sledge
Theses and Dissertations
The relationship between socioeconomic status and access to educational resources was examined. According to a national report on school funding, New Jersey rates third in the nation for equality in school funding (Baker, Sciarra and Farrie 2015). Although disparities in school funding are lower than average, students of low socioeconomic status are still at a disadvantage when entering school. The ways in which school districts spend their money was believed to be affected by the socioeconomic status of the students who attend their schools. Literature was reviewed on the ways in which socioeconomic status has been associated with various health …
Population Genetic Analysis Of The Critically Endangered Black-And-White Ruffed Lemur (Varecia Variegata) In Ranomafana National Park, Madagascar, Amanda Mancini
Theses and Dissertations
This study sought to determine the efficacy of Ranomafana National Park (RNP) in preserving genetic diversity and gene flow in black-and-white ruffed lemurs (Varecia variegata). Results indicate that RNP successfully promotes gene flow between V. variegata groups, although genetic diversity at this site is low compared to other lemur taxa.
Total Energy Expenditure In Captive Sapajus Apella, Wren Edwards
Total Energy Expenditure In Captive Sapajus Apella, Wren Edwards
Theses and Dissertations
Primates expend approximately 50% less energy (kcal/day) for their body size than other eutherians. Using the doubly labeled water method, I investigated total energy expenditure (TEE) and physical activity in Sapajus apella. S. apella TEE was similar (p=0.67) to other platyrrhines, but 54% lower than expected for body mass.
Household Shocks And Transition Into Marriage: Evidence From Rural Ethiopia, Boyd K. Tembo
Household Shocks And Transition Into Marriage: Evidence From Rural Ethiopia, Boyd K. Tembo
Theses and Dissertations
The study tests the primary hypothesis that household shocks do not have a positive and significant correlation with a child's transition into early marriage. It finds that there is no statistically significant correlation between parental death and transition into marriage for both genders of subjects in the study.
Exploring The Effects Of Calorie Labeling Laws, Carmen Vargas
Exploring The Effects Of Calorie Labeling Laws, Carmen Vargas
Theses and Dissertations
This study explores the effects of Calorie labeling laws implemented in some counties in the United States on several health related variables. The findings show a small significant decreasing effect of the law on Limited activity and Poor health of 0.083 and 0.047 at 95% significant level respectively.
School Readiness In Urban Communities, Cree Brooks
School Readiness In Urban Communities, Cree Brooks
Theses and Dissertations
The purposes of this exploratory investigation were to (a) ascertain school readiness influences of young children ages birth to three in the New Jersey Early Intervention System, (b) to analyze race and ethnicity trends of the children within the program, (c) and to see if individual race/ethnicity played a role in children’s school readiness. Publicly available data from the Department of Health/Division of Family Health Services / Early Intervention System was used to analyze two New Jersey counties, Camden County and Somerset County, and to identify amount of school readiness in early intervention results reported from 2013 to 2014. The …
Assessment Of Contamination Levels And Estimation Of Dietary Intake Of Heavy Metals From Selected Imported Fruits And Vegetables In Ghana, Eric Dzimado
Theses and Dissertations
Levels and dietary intake of heavy metals were assessed and evaluated in thirty two samples of fruit and vegetables collected from supermarkets in Accra, Ghana using atomic absorption spectroscopy. Differences (p <= 0.05) existed in Pb, Cd and Ni concentrations across the commodities collected. Levels of Pb, Cd and Cr exceeded safe limits established by FAO and EU. Washing reduced Cr in cabbage by 59% (p <= 0.05) but only reduced Pb in grapes by 12% (p ˃ 0.05). Estimated daily and weekly intake through fruit and vegetable consumption were below provitional tolerable dietary intake established by the FAO. Although estimated dietary intake obtained in this study were below the maximum established limits, increased comsumption of these fruit and vegetables may bring about adverse health implications for the exposed population.
Baseline Susceptibility Of Selected Lepidopteran Pests To Diamides And Use Strategies In Mississippi Soybean, Charles Andrew Adams
Baseline Susceptibility Of Selected Lepidopteran Pests To Diamides And Use Strategies In Mississippi Soybean, Charles Andrew Adams
Theses and Dissertations
Insecticides in the diamide class have a novel mode of action and have become a key component for management of agriculturally important lepidopteran pests since their introduction in 2008. Corn earworm, Helicoverpa zea (Boddie); and the armyworm complex including fall armyworm, Spodoptera frugiperda (J.E. Smith); and Spodoptera exigua (Hübner); are significant pests of agroecosystems in the Mid-southern and Southeastern regions of the United States. They have developed resistance to, and/or inconsistent control has occurred with most chemical classes. The objectives of this study were to establish susceptibility levels of field populations of H. zea, S. frugiperda, and S. exigua collected …
Analyzing The Influence Oxygen Deprivation Has On The Capability Of Listeria Monocytogenes To Induce Listeriosis In Gerbils, Jillian Leigh Harris
Analyzing The Influence Oxygen Deprivation Has On The Capability Of Listeria Monocytogenes To Induce Listeriosis In Gerbils, Jillian Leigh Harris
Theses and Dissertations
Listeria monocytogenes is food-borne pathogen that causes listeriosis in individuals with a compromised immune system and pregnant women. This pathogen can survive in anaerobic conditions present in specially packaged foods as well as the gastrointestinal tract. The purpose of this study is to evaluate virulence of L. monocytogenes F2365 in anaerobic conditions. Another goal of this study is to establish gerbils as the ideal animal model since descrepancies exist in current models. Gerbils were orally infected with one of four doses: 1) phosphate buffered saline, 2) 5X106CFU aerobic dose, 3) 5X108CFU aerobic dose, and 4) 5X106CFU anaerobic dose. Results indicate …
An Exploration And Comparison Of Internalized Behaviors And Peer Relationships In Dual Enrolled And Non-Dual Enrolled Students, Mary Bess Woodard Pannel
An Exploration And Comparison Of Internalized Behaviors And Peer Relationships In Dual Enrolled And Non-Dual Enrolled Students, Mary Bess Woodard Pannel
Theses and Dissertations
While the importance of dual enrollment programs has been clearly demonstrated, the potential impact of completing college level courses during high school has on the emotional and mental well-being of adolescents has not been explored. School counselors are in a unique position to foster an academic environment that also enhances their emotional and mental wellness. Discovering factors that contribute to internalized behaviors, peer relationships, and academic performance, may provide school counselors a better understanding of personal, social, and academic development of adolescents The present study used a nonexperimental, comparative, research design to explore whether or not participation in dual-enrollment courses …
A Biogeochemistry Approach To Geographic Origin And Mortuary Arrangement At The Talgua Cave Ossuaries, Olancho, Honduras, Monica Michelle Warner
A Biogeochemistry Approach To Geographic Origin And Mortuary Arrangement At The Talgua Cave Ossuaries, Olancho, Honduras, Monica Michelle Warner
Theses and Dissertations
Isotopic assays, including stable carbon, stable oxygen, and radiogenic strontium were measured for 37 individuals from the Talgua cave ossuaries to understand human movement and mortuary practice during Formative Period Honduras. Likelihood assignment models demonstrated that the individuals had diverse childhood geographic origins within the surrounding valleys. This shows that different kin or ethnic groups from diverse geographic origins were utilizing the ossuaries. Five possible ‘non-local’ individuals were identified from the radiogenic strontium and stable oxygen isotope datasets, suggesting minimal human movement into northeast Honduras from outside Lower Central America. The low number of ‘non-local’ individuals at Talgua Caves also …
A Comparison Of Direct Instruction And Experiential Learning Techniques To Assess Agricultural Knowledge And Agricultural Literacy Gains In Private School Students, Timothy Bradford Jr.
A Comparison Of Direct Instruction And Experiential Learning Techniques To Assess Agricultural Knowledge And Agricultural Literacy Gains In Private School Students, Timothy Bradford Jr.
Theses and Dissertations
The United States has shifted from a once agrarian, to a predominantly urban society (Riedel, 2006). Currently, less than 2% of the U.S. population live on farms. Coupled with urbanization, this has contributed to the decline of an agriculturally literate population (EPA, 2013; Kovar & Ball, 2013). One strategy to alter the public’s perception of agriculture and increase agricultural literacy is implementing an educational environment that promotes agricultural activities via experience (Blair, 2009). Experiential learning has been championed by prominent educational theorists John Dewey and David Kolb. Experiential learning is conceptualized as a process where relevant experiences are the foundation …
Alfalfa Baleage As A Concentrate Replacer In Dairy Rations: Effects On Dry Matter And Nutrient Intake, Dry Matter Digestibility And Lactation Performance Of Mid To Late Lactation Holstein Cows, Steven Musopole
Theses and Dissertations
A RCBD study with 19 first lactation Holsteins was conducted to investigate the effects of replacing 10% of concentrate with alfalfa baleage on lactation performance. Intake of DM was greater (P=0.02) for low forage (21.92 kg/d) than high forage diet (21.18 kg/d). Digestibility of DM was similar (P=0.4) between high (39.65%) and low forage diet (41.64%). Yield of 4% FCM was similar by diet but greater (P=0.01) for less than or equal to 251 d (29.36 kg/d) than greater than 251 d DIM cows (28.47 kg/d). Feed efficiency tended to be greater (1.42 versus 1.35; P=0.056) for high forage diet …
Best Management Strategies To Manage The Tarnished Plant Bug (Heteroptera: Miridae) In Cotton, Scott Hester Graham
Best Management Strategies To Manage The Tarnished Plant Bug (Heteroptera: Miridae) In Cotton, Scott Hester Graham
Theses and Dissertations
Experiments were conducted to determine the impact of combining multiple best management practices to manage the tarnished plant bug, Lygus lineolaris (Palisot de Beauvois), on cotton. The implementation of this program reduced the amount of insecticide applications needed, significantly increased both square retention during the three weeks of squaring, and yield in the Delta region. Another study was conducted to explore behavioral responses of tarnished plant bug nymphs to several classes of insecticides. There appeared to be both avoidance and attraction depending on insecticide class. The presence of an insecticide did not affect the fruiting structure tarnished plant bugs were …
Cardiac Extracellular Matrix: Structure, Biomechanics In Myocardial Infarction, And Heart Regeneration, Bryn Brazile
Cardiac Extracellular Matrix: Structure, Biomechanics In Myocardial Infarction, And Heart Regeneration, Bryn Brazile
Theses and Dissertations
Myocardial infarction (MI) is the leading cause of death among men and women in the United States. Once a person suffers from a MI, the heart wall will undergo a dynamic and time dependent change, as it goes through the inflammatory phase, proliferative phase, and healing phase. During these phases, the necrotic tissue is removed, and the extracellular matrix (ECM) that holds the cardiomyocytes is altered by an increase in type I collagen, which leads to a scar formation in the infarcted area. The goal of this dissertation is to better understand the role of the cardiac ECM biomechanics in …
Ecological Determinants Of Avian Productivity And Aviation Risk In Semi-Natural Grasslands, Tara Jenise Conkling
Ecological Determinants Of Avian Productivity And Aviation Risk In Semi-Natural Grasslands, Tara Jenise Conkling
Theses and Dissertations
Growing concerns about climate change, foreign oil dependency, and environmental quality have fostered interest in perennial native grasses (e.g. switchgrass [Panicum virgatum]) for bioenergy production while also maintaining biodiversity and ecosystem function. However, biofuel cultivation in marginal landscapes such as airport grasslands may have detrimental effects on aviation safety as well as demography and conservation efforts for grassland birds including Dickcissels (Spiza americana). In 2011–2013 I studied the response of avian populations to vegetation composition and harvest frequency of switchgrass monocultures and native warm-season grass (NWSG) mixtures at B. Bryan farms in Clay Co. MS, USA. Four treatments incorporating switchgrass …
Effect Of Hot Water Immersion Treatment (Hwt) On The Quality Of 'Keitt' Mangoes In Ghana, Akua Tiwaa Sebe
Effect Of Hot Water Immersion Treatment (Hwt) On The Quality Of 'Keitt' Mangoes In Ghana, Akua Tiwaa Sebe
Theses and Dissertations
Currently, Ghana does not use Hot Water Treatment (HWT) as a phytosanitary control measure for mangoes. The effect of HW on the quality of ‘Keitt’ mangoes in Ghana was evaluated. Mangoes were washed with chlorinated water or hot water treated at 47°C for 70 min and stored at 25°C for 8 days. There was no treatment*Storage effect (P> 0.05) on the variables studied. Mangoes TA decreased (P<= 0.05) and pH increased with storage time. HWT had no impact on mango quality but had 50% reduction in decay during storage.
Response Of Three Cool-Season Grass Species To Nitrogen Rate And Harvest Interval In North Central Mississippi, Jonathan Daniel Richwine
Response Of Three Cool-Season Grass Species To Nitrogen Rate And Harvest Interval In North Central Mississippi, Jonathan Daniel Richwine
Theses and Dissertations
Nitrogen (N) use continues to be an important aspect of forage production. Experimentation was conducted to understand the combined effects of N application and harvest regime on three cool-season grasses: orchardgrass, southeastern wildrye, and tall fescue. Tests were established at Starkville and Brooksville, MS, in fall 2013 and 2014, respectively. Plots were fertilized with 0, 134, 202, or 269 kg N ha-1 yr-1 and harvested one, two, three, or four times during the 112-day season. Variables measured included: cumulative dry matter yield, relative forage quality, crude protein percentage, normalized difference vegetation index, nitrogen use efficiency, and persistence. Persistence was only …
Rice Cultivars Responses To Moisture Stress During Seed Germination And Early-Seedling Growth, Bhupinder Singh
Rice Cultivars Responses To Moisture Stress During Seed Germination And Early-Seedling Growth, Bhupinder Singh
Theses and Dissertations
Drought is the major environmental factor affecting crop growth, yield and quality. Two experiments were conducted to understand rice genotypic variability responses to drought stress conditions during seed germination and early-seedling growth. In Experiment I, the influence of wide range of osmotic stress on seed germination properties of 15 rice cultivars were studied using polyethylene glycol media. In Experiment II, seedling morph-physiological parameters including root traits were quantified by subjecting rice seedlings to three different soil moisture treatments, 100, 66 and 33% field capacity. Rice cultivars differed in their response to drought at both the stages. Cultivars were classified into …
Role Of Dde Exposure In Type 2 Diabetes Mellitus: Association With Biochemical Markers And Diabetes Prevalence, Antonio Bartholomew Ward
Role Of Dde Exposure In Type 2 Diabetes Mellitus: Association With Biochemical Markers And Diabetes Prevalence, Antonio Bartholomew Ward
Theses and Dissertations
Type 2 diabetes mellitus (T2D) is a metabolic disease characterized by hyperglycemia, insulin resistance, dyslipidemia, and beta cell dysfunction. T2D prevalence has been increasing with not all clear causes identified, while the use of synthetic chemicals has risen. Because genetics can only explain a small percentage of disease development, more attention is being given to associations of environmental chemical exposure and disease. Epidemiological evidence suggests environmental exposure to organochlorine compounds (OC) including dichlorodiphenyltrichloroethane (DDT) and its bioaccumulative metabolite dichlorodiphenyldichloroethylene (DDE) is associated with T2D prevalence and is hypothesized to play a role in contributing to T2D. The purpose of this …
Selection And Breeding To Improve Commercial Germplasm And Increase Germination Percentage Of Eastern Gamagrass [Tripsacum Dactyloides (L.) L.], Jesse Ira Morrison
Selection And Breeding To Improve Commercial Germplasm And Increase Germination Percentage Of Eastern Gamagrass [Tripsacum Dactyloides (L.) L.], Jesse Ira Morrison
Theses and Dissertations
Perennial warm-season grasses constitute the backbone of many forage production systems, whether for grazing or harvested feed. North American native plants, specifically grasses, forbs and legumes offer unique ecosystem benefits along with forage quality and digestibility that are unmatched by introduced species. The disparity in breeding and research focused on improvement of introduced species as opposed to native genera has led to inflated use of introduced species as forage types in lieu of native options, due to their unimproved nature. Eastern gamagrass [Tripsacum dactyloides (L.) L.] is proven to be a widely adapted, highly productive forage species in the southeast, …
Objective Assessment Of Physical Activity In Adults With Down Syndrome, Jasmine Symone Curtis
Objective Assessment Of Physical Activity In Adults With Down Syndrome, Jasmine Symone Curtis
Theses and Dissertations
The purpose of this study was to examine whether cut-points developed for the general population provide different estimates of physical activity (PA) levels in adults with Down syndrome (DS) compared to cut-points developed specifically in adults with DS. This study also attempted to objectively measure the PA levels of adults with DS and to determine if they meet the recommended amount of PA to obtain health benefits. Thirteen adults with DS wore an accelerometer to determine time spent in moderate, vigorous, and moderate-to-vigorous PA. Results indicated that different sets of cut-points responded differently in classifying moderate and vigorous PA levels, …
Optimizing Carbon To Nitrogen Ratios To Improve Nitrogen Removal In Agricultural Drainage Ditches, Derek Ronald Faust
Optimizing Carbon To Nitrogen Ratios To Improve Nitrogen Removal In Agricultural Drainage Ditches, Derek Ronald Faust
Theses and Dissertations
Since 1961, a fourold increase in application of fertilizers in the United States has helped to double crop yields. Nutrients not used by crops are often transported to aquatic ecosystems adjacent to agricultural fields. In the Lower Mississippi Alluvial Valley, nutrients enter agricultural drainage ditches and are transported to receiving water bodies, eventually reaching the Gulf of Mexico. The annual occurrence of a hypoxic zone in the Gulf of Mexico is caused by nitrogen loads from the Mississippi River Basin. Objectives of these studies were: (1) evaluate how organic carbon amendments affect nitrate-nitrogen removal in agricultural drainage ditch systems, (2) …
Plant Community And White-Tailed Deer Nutritional Carrying Capacity Response To Intercropping Switchgrass In Loblolly Pine Plantations, Ethan Jacob Greene
Plant Community And White-Tailed Deer Nutritional Carrying Capacity Response To Intercropping Switchgrass In Loblolly Pine Plantations, Ethan Jacob Greene
Theses and Dissertations
Switchgrass (Panicum virgatum L.) is a cellulosic feedstock for alternative energy production that could grow well between planted pines (Pinus spp.). Southeastern planted pine occupies 15.8 million hectares and thus, switchgrass intercropping could affect biodiversity if broadly implemented. Therefore, I evaluated effects of intercropping switchgrass in loblolly pine (P. taeda L.) plantations on plant community diversity, plant biomass production, and white-tailed deer (Odocoileus virginianus Zimmerman) nutritional carrying capacity. In a randomized complete block design, I assigned three treatments (switchgrass intercropped, switchgrass monoculture, and a “control” of traditional pine management) to 4 replicates of 10-ha experimental units in Kemper County, Mississippi …
Developing Assisted Reproductive Technologies For Endangered North American Amphibians, Cecilia Jane Langhorne
Developing Assisted Reproductive Technologies For Endangered North American Amphibians, Cecilia Jane Langhorne
Theses and Dissertations
An alarming number of anuran (frog and toad) species are facing the threat of extinction in the wild. In efforts to address this conservation crisis, captive breeding programs are rapidly being established at zoos and research institutions worldwide. However, the captive management of anurans can be challenging, as their reproduction is a tightly regulated hormonal response to environmental stimuli, often unknown or absent in captivity. Consequently, ex-situ breeding efforts tend to be greatly hindered by a paucity of knowledge in anuran reproductive physiology and, for many species on the brink of extinction, time is running out. Assisted reproductive technologies (ARTs), …