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A Comparative Study Of Household Demand For Meats By U.S. Hispanics, Carlos Ignacio Garcia
A Comparative Study Of Household Demand For Meats By U.S. Hispanics, Carlos Ignacio Garcia
LSU Master's Theses
The general objective of this research project was to study the consumption behavior of U.S. Hispanics for meat products. A comprehensive review of literature on the studies of U.S. Hispanic consumers was performed by means of a systematic survey; different sources of information useful in studying Hispanic consumers were documented. The simultaneous increase in population and income of Hispanics in the United States is attractive to food companies, and makes more relevant the study of their consumer behavior patterns for discovering future market opportunities. Censored incomplete demand systems of the LinQuad form were used for recognizing the consumption patterns by …
The Effect Of Music Tempo On Movement Responses Of Preschool Children, Melanie Woods Alexander
The Effect Of Music Tempo On Movement Responses Of Preschool Children, Melanie Woods Alexander
LSU Master's Theses
The purpose of this study was to examine the effect of tempo on movement responses of children ages one to three. For two weeks, 17 children between the ages of 22 and 36 months were videotaped twice per week to observe and measure their movement responses to fast and slow musical stimuli. During these sessions, the children were videotaped in their classrooms, engaged in either free play or in a quiet group activity. The videotaped sessions were then analyzed using a Motor Observation Form. Once all of the tapes had been viewed and scored, overall percentages of movement and no …
The Impact Of Hypoxia On Mercury Methylation In Bottom Sediment Of Northern Gulf Of Mexico, Mei Huey Tan
The Impact Of Hypoxia On Mercury Methylation In Bottom Sediment Of Northern Gulf Of Mexico, Mei Huey Tan
LSU Master's Theses
Widespread concern has developed about high mercury content in fish in the Gulf of Mexico and adjacent estuaries and bays. Among the areas implicated as possible sources of the mercury that moves up the food chain from the methylmercury formed in sediments and anoxic waters is the seasonal hypoxic zone in the northern Gulf. This research was designed to determine if methylmercury formation is stimulated by the anaerobic sediment conditions accompanying the onset of summer hypoxia in the Gulf. Both field and laboratory studies were carried out. For the field study sediment samples were collected at three stations (i.e. C4, …
The Impact Of The Louisiana Master Gardener Program On The Perceived And Actual Horticultural Knowlede Levels Of Program Participants, Bobby Hugh Fletcher
The Impact Of The Louisiana Master Gardener Program On The Perceived And Actual Horticultural Knowlede Levels Of Program Participants, Bobby Hugh Fletcher
LSU Doctoral Dissertations
The primary purpose of this study was to determine the impact of participation in the master gardener program on: a. Self-perceived knowledge in selected horticultural areas; b. Knowledge in selected areas of horticulture as measured by a researcher designed test; and c. Use of best management practices (BMPs) in horticultural practice. Gardening is a favorite pastime in the United States that has therapeutic and rewarding benefits. Currently, there is a great demand for accurate gardening (horticultural) information from green industry users such as gardeners from all backgrounds and areas. There is a need for research-based horticultural information to be provided …
Belowground Biomass Of Spartina Alterniflora: Seasonal Variability And Response To Nutrients, Faith Armand Darby
Belowground Biomass Of Spartina Alterniflora: Seasonal Variability And Response To Nutrients, Faith Armand Darby
LSU Doctoral Dissertations
Spartina alterniflora is a salt marsh macrophyte found from Canada to the Gulf of Mexico which often provides the dominant plant cover. Although S. alterniflora is well known for its high aboveground productivity, fifty to ninety percent of the total plant production occurs belowground. No previous studies address the seasonal variation of belowground biomass or the response of above-and belowground biomass to nutrients at the southern limits of its U. S. range. The objectives of this study were to: 1) document the seasonal variability of its above- and belowground biomass and test for responses to various combinations of N, P, …
Impact Of A Stage-Matched Weight Loss Intervention On Stage Of Change Progression In Predominantly African-American Female Primary Care Patients, Jamie Sue Bodenlos
Impact Of A Stage-Matched Weight Loss Intervention On Stage Of Change Progression In Predominantly African-American Female Primary Care Patients, Jamie Sue Bodenlos
LSU Doctoral Dissertations
Obesity is associated with several chronic medical conditions. Certain individuals are at higher risk for obesity including low-income African American females. Despite the many benefits to weight loss, many individuals do not seek treatment. Individuals are likely to attend primary care appointments where obesity can be targeted. Although stage matched interventions based on the Transtheoretical Model (TM) have been used successfully to aid in health behavior change, few studies have examined the use of stage matched weight loss interventions in African American females. There is also a paucity of research examining the effects of stage matched weight loss interventions on …
Studies Of Epigenetic Instability In Human Normal And Diseased Vulva Skin, Zhengyu Zhang
Studies Of Epigenetic Instability In Human Normal And Diseased Vulva Skin, Zhengyu Zhang
LSU Master's Theses
Epigenetic modification is another mechanism involved in the cancer development besides classic mutations such as deletion. Aberrant promoter methylation and associated chromatin modification have been frequently reported in various tumors of different clinical stages. Hypermethylation has been frequently observed in tumor suppressor genes and causes reduced transcripts of these genes. Hypomethylation also has been reported to be involved in activation of oncogenes. Inactivation of the X chromosome and the imprinting of gamete DNA depend on the methylation patterns in the promoter region. Understanding methylation mechanisms could be helpful to diagnosis of early stage tumorgenesis or offer molecular markers for detecting …
Cultivar, Juice Extraction, Ultra Violet Irradiation And Storage Influence The Stilbene Content Of Muscadine Grapes (Vitis Rotundifolia Michx.), Mark Rene' Leblanc
Cultivar, Juice Extraction, Ultra Violet Irradiation And Storage Influence The Stilbene Content Of Muscadine Grapes (Vitis Rotundifolia Michx.), Mark Rene' Leblanc
LSU Doctoral Dissertations
Stilbene concentration was analyzed in juice and tissue of muscadine grape (Vitis rotundifolia Michx.) and bunch grape (Vitis labrusca L.) from fresh fruit, after processing and after postharvest treatments. Five filter types were evaluated for percent resveratrol recovery when filtering standard and spiked juice samples in preparation for HPLC analysis. Only two (polycarbonate and Anopore) of the five filter types had more than 90 percent recovery. Polycarbonate was chosen for sample preparation since it was more durable during handling. Eight muscadine grape cultivars and three bunch grape cultivars were evaluated. Skin tissue had approximately 100 times higher stilbene concentration than …
Characterization Of Beta-Amyloid Peptide Aggregation And Acceleration With Non-Fibrillar Forming Peptide-Based Mediators, Nadia J. Edwin
Characterization Of Beta-Amyloid Peptide Aggregation And Acceleration With Non-Fibrillar Forming Peptide-Based Mediators, Nadia J. Edwin
LSU Doctoral Dissertations
Protein aggregation occurs under many circumstances, from the dynamic assembly of tubulin to form microtubules, the aggregation of actin into filaments, as well as plaque formation by amyloid precipitation. One important requirement in studying the mechanism of amyloid aggregation is the ability to monitor the growth kinetics over a wide range in size scales (10 nm to microns) with time that spans microseconds to seconds. Understanding the mechanisms of the aggregation may then lead to improved design of drugs to help control or suppress the aggregation process. In this dissertation, the physical characterization of the â-amyloid peptide and its interaction …
Ecology Of Lesser Scaup Amphipods In The Upper-Midwest: Scope And Mechanisms Of The Spring Condition Hypothesis And Implications For Migration Habitat Conservation, Michael Jason Anteau
Ecology Of Lesser Scaup Amphipods In The Upper-Midwest: Scope And Mechanisms Of The Spring Condition Hypothesis And Implications For Migration Habitat Conservation, Michael Jason Anteau
LSU Doctoral Dissertations
I tested the scope of the Spring Condition Hypothesis in explaining the continental population decline of lesser scaup (Aythya affinis; hereafter scaup) and explored potential mechanisms affecting female body condition to assist conservation efforts for population recovery. Lipid reserves of females currently are lower than historical values during spring migration throughout Iowa, Minnesota, and North Dakota; females catabolized lipids throughout this area (indexed by concentrations of plasma-lipid metabolites, which accounted for 75% of the variation in mass change). My results indicate that a large segment of the continental scaup population likely is affected by decreased lipid reserves, which could cause …
Epoxygenase Expression In Soybean And Biological Effects Of Epoxy Fatty Acids, Purnima Kamlakar Wagh
Epoxygenase Expression In Soybean And Biological Effects Of Epoxy Fatty Acids, Purnima Kamlakar Wagh
University of Kentucky Master's Theses
Epoxy fatty acids (EXA) are valuable to industry as they are used in synthesizing plasticizers such as of poly vinyl chloride, resins, adhesives, coating materials such as paint, lubricant, lubricant additives, insecticides, insect repellants, crop oil concentrates and formulations of carriers for slow release pesticides and herbicides. There is interest in developing commercial oilseeds accumulating epoxy fatty acids to at least 50% of the seed oil. Soybeans are the most widely cultivated oilseed and its oil has high levels of linoleic acid which can be a substrate for epoxygenase enzymes. Cahoon et al., expressed a cytochrome P450 enzyme (CYP726A1) from …
Assessment Of Interactions Amoung Viruses Infecting Sweetpotato, Charalambos D. Kokkinos
Assessment Of Interactions Amoung Viruses Infecting Sweetpotato, Charalambos D. Kokkinos
LSU Doctoral Dissertations
Viral diseases, especially those caused by mixed infections, are among the economically most important diseases of sweetpotato. Real-time PCR assays were developed for the detection and quantification of the potyviruses Sweet potato feathery mottle virus (SPFMV), Sweet potato virus G (SPVG), Ipomoea vein mosaic virus (IVMV); the crinivirus Sweet potato chlorotic stunt virus (SPCSV), and the begomovirus Sweet potato leaf curl virus (SPLCV) directly from infected sweetpotato plants. Titers of SPFMV, IVMV, and SPVG were lower in singly-infected sweetpotato plants compared to singly-infected plants of the standard indicator host Brazilian morning-glory (Ipomoea setosa) and the standard propagation host I. nil …
Datum Is Only Skin Deep: In Vivo Measurements Of Facial Tissue Thickness In Chimpanzees, Julia Rose Hanebrink
Datum Is Only Skin Deep: In Vivo Measurements Of Facial Tissue Thickness In Chimpanzees, Julia Rose Hanebrink
LSU Master's Theses
This study is an ultrasonic investigation of chimpanzee (Pan troglodyte) facial tissue depth variability as well as a comparison between chimpanzee tissue depth standards and modern human (Homo sapiens) tissue depth standards. This research intends to broaden the extent of knowledge available regarding nonhuman primate anatomy. In addition, this research hopes to provide valuable information regarding facial reconstructions of early hominins. The subjects utilized for this study were 44 male and female chimpanzees between the ages of two to forty-five years. The chimpanzees were made available by the University of Louisiana at Lafayette New Iberia Research Center (NIRC) in New …
The Rate Of Decline Of Social Skills Across Dementing And Non-Dementing Individuals With Intellectual Disabilities: A Longitudinal Study, Julia D. Lott
LSU Doctoral Dissertations
This study sought to establish rate of decline of adaptive skills in a population of individuals with intellectual disability (ID) and dementia compared to similar persons without dementia, as well as examining the variability of positive and negative social behaviors across diagnostic classes. Among the general population, differential rates of functional decline have been established for normal aging and dementia. This knowledge assists in making differential diagnoses of dementia, establishing prognosis, and long-term planning. For this study, participants in each group were individually matched for age, gender, Down’s syndrome status, and level of ID. Participants in the matched control group …
Nutrient-To-Cost Comparisons Of Daily Dietary Intake, Food Security Status, And Body Mass Index In Female Food Stamp Recipients Residing In Southeast Louisiana, Shanna Lundy
LSU Master's Theses
Diets are typically poorer and risk of chronic disease is greatest in low-income populations. A relationship has been established in the literature between food costs and diet quality, where lower cost diets are generally those of the poorest quality. Food group intake, energy/nutrient intake, and diet cost were assessed in 64 female food stamp recipients in Southeast Louisiana. From one 24-hour dietary recall collected at the beginning of the monthly resource cycle (Day 1) and one at the end (Day 2), nutrient intakes and diet costs were able to be analyzed between different time frames. Participants were divided among food …
Design And Evaluation Of Automated, Continuous Culture Techniques For Brachionus Rotundiformis, Zhengzhong Zhang
Design And Evaluation Of Automated, Continuous Culture Techniques For Brachionus Rotundiformis, Zhengzhong Zhang
LSU Doctoral Dissertations
A 40-L recirculating rotifer turbidostat (RRT) pilot system consisting of a rotifer reactor, biofilter, foam fractionator, feed container, harvester, and two air-lift pumps was designed to produce B. rotundiformis, a small (S-type) rotifer, that is increasingly demanded for production of small-gape marine finfish larvae. The system’s automatic monitoring (turbidity, pH, conductivity and temperature) and controlling (turbidity, pH, feeding and harvesting) were performed by a Rugid™ computer. A 4 (temperature) x 3 (salinity) study indicated that a 30oC/15 ppt treatment is the most favorable to the growth of B. rotundiformis. Under these conditions, the effect of harvest rate on rotifer system …
Interactions Between Formosan Subterranean Termites, Brown Rot Fungus (Gloeophyllum Trabeum) And Some Of The Fungi Present On The Termite Integument And Gut, Poornima Jayasimha
Interactions Between Formosan Subterranean Termites, Brown Rot Fungus (Gloeophyllum Trabeum) And Some Of The Fungi Present On The Termite Integument And Gut, Poornima Jayasimha
LSU Master's Theses
Although the brown rot fungus, Gloeophyllum trabeum (Pers.:Fr.) Murrill, has been shown to be attractive and beneficial to subterranean termites, including Coptotermes formosanus Shiraki, to date no research has been conducted to determine if the association is mutualistic. We first set out to determine if the fungus could be spread by termites. This would represent an obvious benefit to the fungus. We found that C. formosanus does not spread G. trabeum. Unexpectedly, Formosan subterranean termites were found to suppress the growth of G. trabeum. To further investigate this finding, Formosan subterranean termite workers were released into Petri dishes with wood …
Phytoremediation Of A High Phosphorus Soil By Summer And Winter Hay Harvest, Veronica A. Ryan
Phytoremediation Of A High Phosphorus Soil By Summer And Winter Hay Harvest, Veronica A. Ryan
LSU Master's Theses
Phosphorus (P) loading into surface water from runoff and subsurface flow leaving soils subjected to long-term applications of poultry litter (PL) will degrade water quality. A practical way to reduce such loading is to remove soil P through plant uptake and harvest removal. The primary field study presented here examined the effectiveness of hay harvest utilizing a double-cropped system - perennial warm-season forage grass, common bermudagrass (CB; Cynodon dactylon (L.) Pers.), overseeded with annual ryegrass (ARG; Lolium multiflorum Lam.), a cool-season forage, in reducing soil P from a Ruston fine-sandy loam impacted by PL amendments. A secondary field study similarly …
Depolymerization And Decolorization Of Chitosan By Ozone Treatment, Seung-Wook Seo
Depolymerization And Decolorization Of Chitosan By Ozone Treatment, Seung-Wook Seo
LSU Master's Theses
Currently, depolymerization and decolorization of chitosan are achieved by chemical or enzymatic methods which are time consuming and expensive. Ozone has been shown to be able to degrade macromolecules and remove pigments due to its high oxidation potential. In this study, the effects of ozone treatment on depolymerization and decolorization of chitosan were investigated. Crawfish chitosan was ozonated in water and acetic acid solution for 0, 5, 10, 15, and 20 minutes at room temperature with 12wt% gas. For the determination of viscosity–average Molecular weight of chitosan, an ubbelohde viscometer was used to measure the intrinsic viscosity, and the Mark-Houwink …
Gamete And Cell Technologies For Use In Biological Resource Banking, Liesl Nel-Themaat
Gamete And Cell Technologies For Use In Biological Resource Banking, Liesl Nel-Themaat
LSU Doctoral Dissertations
Biological resource banking is becoming important for endangered species conservation. A series of experiments were conducted to address issues concerning collection and utilization of biomaterials from Gulf Coast Native (GCN) sheep (model species) (Ovis aries) and Eland antelope (Taurotragus oryx). In the first experiment, two ejaculates were collected 10 minutes apart from each of five rams three times a week for three weeks to maximize output and minimize handling time. Semen volume, concentration and total number of spermatozoa were significantly greater in first ejaculates, whereas pre-cooled, cooled and post-thaw motility, as well as sperm survival, were greater in second ejaculates. …
The Development Of Colletotrichum Graminicola Inside Maize Stalk Tissues, Claire Marie-Pierre Venard
The Development Of Colletotrichum Graminicola Inside Maize Stalk Tissues, Claire Marie-Pierre Venard
University of Kentucky Doctoral Dissertations
Colleotrichum graminicola is the causal agent of anthracnose stalk rot, and is one of the most common and aggressive pathogens of maize. The goal of my Ph.D. project was to contribute to a better understanding of the biology of the interaction between C. graminicola and its host. C. graminicola produces two type of asexual spores: one is produced on the surface of infected tissues and is thought to be involved in the spread of the disease in the field. The second type of spore, oval in shape, is produced inside the infected plant tissues, and was believed to be involved …
Localization Of Diplodia Pinea In Diseased And Latently-Infected Pinus Nigra, Jennifer Lee Flowers
Localization Of Diplodia Pinea In Diseased And Latently-Infected Pinus Nigra, Jennifer Lee Flowers
University of Kentucky Doctoral Dissertations
Diplodia pinea causes Diplodia tip blight on more than 30 different pine species. During the past 10 years, Diplodia tip blight has emerged as a serious problem in landscape and Christmas tree farms in this region. Surveys of diseased and symptomless Austrian pines revealed that latent infections of symptomless shoots by D. pinea were common. Latent infections may account for the recently observed rapid decline of mildly diseased pines in our region. To investigate the colonization habits of D. pinea within its host, molecular cytology was attempted and traditional histology was performed on naturally infected, diseased and asymptomatic Austrian pine …
Efficacy Of Nutrition Education Lessons Targeting A Group Of Low-Income Elderly, Gabriela M. Viteri
Efficacy Of Nutrition Education Lessons Targeting A Group Of Low-Income Elderly, Gabriela M. Viteri
LSU Master's Theses
Nutrition education has the potential not only to increase nutrition knowledge and, potentially, healthy behaviors, among the elderly, but also to reduce the need for health and social services. The nutrition component described herein is part of an overall wellness program that focuses on increasing physical activity and healthy dietary behaviors among participants. We completed a four month nutrition intervention in a group of 33 low income elderly at the Leo Butler Center (LBC) (n=20) and Catholic Presbyterian Apartments (CPA) (n=13) in the fall of 2005 in Baton Rouge, LA. The Social Cognitive Theory (SCT) was used as the theoretical …
Do Overweight Inactive Parents Raise Overweight Inactive Children? Examination Of The Influence Of The Home Environment On Weight Status Of Children Over Time, Emily York-Crowe
Do Overweight Inactive Parents Raise Overweight Inactive Children? Examination Of The Influence Of The Home Environment On Weight Status Of Children Over Time, Emily York-Crowe
LSU Doctoral Dissertations
The primary aim of this study was to test whether body mass index (BMI), psychosocial, and behavioral parental variables were associated with similar variables in children at baseline, and whether these variables also served as significant predictors of overweight status in children after two years. While there have been several cross-sectional studies examining the impact of parental behaviors and characteristics on similar variables in children, and several longitudinal studies predicting weight status, BMI percentile, and risk factors of disease in children over time, there is a paucity of research that has identified (cross-sectionally) and then tested (longitudinally) significant parental variables …
The Relationship Between Mania And Feeding/Mealtime Behavior Problems Among Persons With Intellectual Disability, Rinita Laud
The Relationship Between Mania And Feeding/Mealtime Behavior Problems Among Persons With Intellectual Disability, Rinita Laud
LSU Doctoral Dissertations
This study represents the first to assess whether a relationship between mania and feeding/mealtime behavior problems exists in individuals with ID. Participants were compared across three groups (manic, non-manic psychiatrically impaired, and controls) on subscales and items of the Screening Tool for fEeding Problems (STEP). An attempt was made to assess for differences in problematic feeding behavior. Individuals in the manic group exhibited clinically significant symptoms of mania (n = 18), those in the non-manic psychiatrically impaired group exhibited symptoms of psychopathology other than mania (n = 18), and those in the control group did not exhibit symptoms of mania …
Examination Of The Constructs Of The Transtheoretical Model In Patients With Heart Failure: A Focus On Physical Activity Readiness, Tracie Rena Parish
Examination Of The Constructs Of The Transtheoretical Model In Patients With Heart Failure: A Focus On Physical Activity Readiness, Tracie Rena Parish
LSU Doctoral Dissertations
The goal of this research was to gain greater understanding about the management of heart failure patients. A particular focus was to evaluate exercise tolerance and behavior. The major findings of the first study included: (1) evidence that few heart failure patients receive adequate information regarding physical activity; (2) performance on a six-minute walk test were ~42% lower, and SF-36 scores were also lower in heart failure patients compared to controls; (3) stability in hemodynamic measures and distance walked on the 6-minute walk test were adequate, and (4) home exercise resulted in 19% improvement in maximum walking distance and 30% …
Evaluation On Antioxidant Activities Of The Soybean Oils And Gums, Xianglong Yuan
Evaluation On Antioxidant Activities Of The Soybean Oils And Gums, Xianglong Yuan
LSU Master's Theses
In this study crude soy oil was extracted from the soy flour by hexane solvent. The crude oil was refined using a refining procedure similar to the one in edible oil industries, which included degumming, neutralizing, and bleaching. As the result, the eight groups of the oils and the gums were obtained. The compositions of fatty acids and tocopherols in the eight groups of samples were analyzed using GC-FID and HPLC, respectively. The antioxidant activities of the samples were analyzed by two chemical models, cholesterol and DHA. The results showed that ã- and ä-tocopherols may not be the main antioxidants …
The Effects Of Perceptions On Consumer Acceptance Of Genetically Modified (Gm) Foods, Jae-Hwan Han
The Effects Of Perceptions On Consumer Acceptance Of Genetically Modified (Gm) Foods, Jae-Hwan Han
LSU Doctoral Dissertations
This study investigates the effects of risk/benefit beliefs on consumer purchase intentions for genetically modified (GM) foods. A random, national, mail survey is conducted. Three main problems are addressed in the study. The first problem addressed is to analyze the relationship between consumers risk/ benefit beliefs regarding GM foods, and their willingness to buy GM crop and meat products. The second problem deals with linkages between a consumer’s risk/benefit beliefs about GM foods and willingness to pay (WTP) for GM foods with a benefit disclosure. The third problem addressed is to test a causal relationship between knowledge and trust toward …
A Novel Yogurt Product With Lactobacillus Acidophilus, Senthil Ganesh
A Novel Yogurt Product With Lactobacillus Acidophilus, Senthil Ganesh
LSU Master's Theses
Health benefits of Lactobacillus acidophilus include providing immune support for infections or cancer, providing a healthy replacement of good bacteria in the intestinal tract following antibiotic therapy, reducing occurrence of diarrhea in humans, aiding in lowering cholesterol and improving the symptoms of lactose intolerance. Consumer demand exists for new dairy products. There are several types of yogurt like stir curd, set curd and drinkable yogurt and they all need to be refrigerated. Moreover there are very few dairy products that can be stored at room temperature and not many dairy foods are finger foods. A novel yogurt product like a …
Antimicrobial Activity Of Cpc And Asc Against Foodborne Pathogens And The Physiological Effect On Fresh-Cut Cantaloupe Cubes At Refrigerator Temperatures, Allison Marie Dumas
Antimicrobial Activity Of Cpc And Asc Against Foodborne Pathogens And The Physiological Effect On Fresh-Cut Cantaloupe Cubes At Refrigerator Temperatures, Allison Marie Dumas
LSU Master's Theses
In the last few decades, fresh-cut fruit products have gained popularity with consumers. They require little to no further processing prior to consumption. Fresh-cut products also make fruits and vegetables more conveniently available to consumers year-round. There are limitations, however, to fresh-cut fruit and vegetables in the marketplace. These products are very perishable and could become contaminated with foodborne pathogens. Most fresh-cut fruits and vegetables will only last a short period of time at refrigerator temperatures. There are many possible routes of bacterial contamination in the fresh-cut produce industry. There is a need for antimicrobial compounds that can be applied …