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Articles 1 - 30 of 57
Full-Text Articles in Life Sciences
Louisiana Agriculture Fall, 2005, Lsu Agcenter
Louisiana Agriculture Fall, 2005, Lsu Agcenter
Louisiana Agriculture
No abstract provided.
Species Limits Within The Mexican Garter Snakes Of The Thamnophis Godmani Complex, Douglas A. Rossman, Frank T. Burbrink
Species Limits Within The Mexican Garter Snakes Of The Thamnophis Godmani Complex, Douglas A. Rossman, Frank T. Burbrink
Occasional Papers of the Museum of Natural Science, Louisiana State University
The highly variable Thamniphis godmani complex of southern Mexico, comprised of four apparently allopatric populations, was examined by using 28 morphological characters scored on 214 specimens. Character values were tested with univariate and multivariate statistics to determine if populations are morphologically distinct. The results suggest that the four populations represent independently evolving lineages. Four species, three previously undescribed, are recognized in the T. godmani complex. A lectotype is designated for T. godmani. For each species, a diagnosis description of holotype or lectotype, summary of interspecific variation, and statement of distribution are provided. Comparisons are made with T. errans, alleged to …
Louisiana Agriculture Summer, 2005, Lsu Agcenter
Louisiana Agriculture Summer, 2005, Lsu Agcenter
Louisiana Agriculture
No abstract provided.
Microfluidics Fabrication And Testing For A Novel Biomems Cell Counting Device, Marly N. Dows
Microfluidics Fabrication And Testing For A Novel Biomems Cell Counting Device, Marly N. Dows
Honors Theses
No abstract provided.
Characterization Of The Domain-Domain Interactions And Dna Binding In The Saccharomyces Cervisiae Hmcb Protein, Hmo1, Kevin Thomas Bauerle
Characterization Of The Domain-Domain Interactions And Dna Binding In The Saccharomyces Cervisiae Hmcb Protein, Hmo1, Kevin Thomas Bauerle
Honors Theses
No abstract provided.
Effects Of Type Of Instruction On Ground Reaction Forces In Jump Landing, Janet Leu
Effects Of Type Of Instruction On Ground Reaction Forces In Jump Landing, Janet Leu
Honors Theses
No abstract provided.
Functional Genomics Of Carboxyltransferase, Nathan R. Ranney
Functional Genomics Of Carboxyltransferase, Nathan R. Ranney
Honors Theses
No abstract provided.
Louisiana Agriculture Spring, 2005, Lsu Agcenter
Louisiana Agriculture Spring, 2005, Lsu Agcenter
Louisiana Agriculture
No abstract provided.
Louisiana Agriculture Winter, 2005, Lsu Agcenter
Louisiana Agriculture Winter, 2005, Lsu Agcenter
Louisiana Agriculture
No abstract provided.
Revision Of Pocadius Erichson (Coleoptera: Nitidulidae), Andrew R. Cline
Revision Of Pocadius Erichson (Coleoptera: Nitidulidae), Andrew R. Cline
LSU Doctoral Dissertations
A revision of Pocadius Erichson (Coleoptera: Nitidulidae) was completed. A total of 46 species were (re)described, including 25 new species, a key to species constructed, and phylogenetic analysis performed. Taxonomic changes, including nomenclatural emendations, reinstatement of species, and description of new taxa, within this dissertation do not constitute formal changes as defined by the International Code of Zoological Nomenclature. Illustrations of the genitalia, key characters, and dorsal habitus of species are provided. The phylogeny demonstrates a monophyletic Pocadius. The phylogeny suggests a Palearctic origin of the genus with subsequent speciation into the Old World tropics and New World. Host specialization …
Physical Function And Health Related Quality Of Life In Culturally Diverse Elders: Evidence Of Environmental Press, Robyn M. Bossier
Physical Function And Health Related Quality Of Life In Culturally Diverse Elders: Evidence Of Environmental Press, Robyn M. Bossier
LSU Master's Theses
The purpose of this project was to identify group differences in physical function and HRQL between older adults living in different environments, and to compare information from these groups to data from a random sample of elders pulled from the general population. METHODS: Seventy-eight older adults were evaluated for physical function using the continuous-scale physical functional performance test (CS-PFP) and HRQL using the SF-36 v.2. Subjects were 26 predominantly African American participants (LOW group; age 72.2 ± 8.1 years), 26 Caucasian adults (HIGH group; age 77.6 ± 4.8 years), and 26 adults selected from a population-based study (POP group; age …
Economic Evaluation Of Potential Changes In Farm Program Price Support For Typical Louisiana Rice And Cotton Farming Operations, Manuel E. Aldana
Economic Evaluation Of Potential Changes In Farm Program Price Support For Typical Louisiana Rice And Cotton Farming Operations, Manuel E. Aldana
LSU Master's Theses
Increased government deficit has led the congress to reduce federal spending. Proposed budget cuts are intended to decrease government spending in several areas, including agriculture. Reductions in farm program spending could cause significant adverse effects on the financial situation of many farms, particularly to rice and cotton enterprises, due to their high reliance on farm program payments as a source of income. Representative rice and cotton operations of one, two, three, and four entities as single crop enterprises were considered and developed for use in this study. Farm enterprise sizes were determined by estimating the acreage level at which a …
Physicochemical Properties Of Pepper Mash Fermented In Wood And Plastic, Foong Ming Koh
Physicochemical Properties Of Pepper Mash Fermented In Wood And Plastic, Foong Ming Koh
LSU Master's Theses
Red Chile peppers (Capsicum spp.) have become one of the fastest growing spices in U.S. market due to the changing American diet, increasing ethnic diversity and the influence of ethnic foods. Louisiana has long been known for its famous hot sauce production especially sauces that are made from Tabasco pepper (C. frutescens). The raw peppers are normally ground together with salt and fermented before production. Peppers mash is usually fermented in wood barrel made out of oak. However, a wood barrel is very expensive when used in pepper fermentation. As compared to wood barrel, plastic barrel have longer usage time …
An Assessment Of Consumer Preferences For Louisiana Strawberries, Michael Neil Bruchhaus
An Assessment Of Consumer Preferences For Louisiana Strawberries, Michael Neil Bruchhaus
LSU Master's Theses
Louisiana strawberry production has decreased over a period of years while national production has increased, leading to concern that Louisiana's strawberry industry might disappear. California, the leading producer state, has exploited its production advantages and marketing efficiency to increase production. The objectives of the study were (1) to identify strawberry attributes preferred by consumers in the selected market area, (2) to analyze key demographic factors that influence the decision about sources of and preferences for strawberries, and (3) to identify key steps that the Louisiana strawberry industry might take to improve marketability of product and profitability of its production. Conjoint …
Hemodynamic And Ocular Responses To Caloric Stimulation And Age-Related Disparities, Melissa J. Deveer
Hemodynamic And Ocular Responses To Caloric Stimulation And Age-Related Disparities, Melissa J. Deveer
LSU Master's Theses
Age-related declines in vestibular function affect balance and coordination in older adults. Of perhaps equal importance, but less understood, are the potential implications of vestibular degeneration on cardiovascular homeostasis. Recent evidence suggests that the semi-circular canals, a section of the vestibular system, may be involved in the vestibulosympathetic reflex (VSR), but the extent to which the aging of the semi-circular canals interferes with cardiovascular homeostasis is unknown. Activation of the intact VSR results in increases in tonometric blood pressure (TBP) and heart rate (HR) as well as decreases in cardiac output (Q) and pre-ejection period (PEP). The purpose of this …
Development, Evaluation And Characterization Of Protein-Isoflavone Enriched Soymilk, Janette Ethel-Pessi Saidu
Development, Evaluation And Characterization Of Protein-Isoflavone Enriched Soymilk, Janette Ethel-Pessi Saidu
LSU Doctoral Dissertations
Adequate provision of soy isoflavone and protein in soybean products is essential in meeting the soy health claim and the promotion of a healthy product. Commercial soymilks contain inadequate amounts of protein and isoflavone to meet the FDA recommended 25g and 40-50mg/day level, respectively, in 1-2 servings. This research study set out to investigate the possibility of producing a protein-isoflavone enriched (PIE) soymilk by incorporating soy germ in soymilk to provide the recommended FDA level in 1-2 servings. Three PIE soymilks containing 25 (SG25), 30 (SG30), and 35% (SG35) germ were prepared and compared to 100% whole soybean milk (WSB-control) …
The Effect Of Dietary Phosphorus Level And Phytase Supplementation On Growth Performance, Bone Breaking Strength, And Phosphorus Excretion In Broilers, Syrena Powell
LSU Master's Theses
This research was conducted to determine the effects of feeding different P levels with and without phytase supplementation on broiler growth performance, bone breaking strength (BBS), and P excretion. An experiment with 4 trials was conducted with 7,840 Ross x Ross straight run broilers. For each trial, 1,960 broilers were allotted on d 0 to 4 treatments with 7 replications per treatment with 70 broilers per replication. The broilers were fed a 4 period feeding program consisting of starter (0 to 14 d), grower (14 to 32 d), finisher (32 to 41 d), and withdrawal (41 to 50 d) periods. …
Genetic (Co) Variance For Growth And Tenderness Related Traits In Purebred Brahman Steers, Joshua Dean Domingue
Genetic (Co) Variance For Growth And Tenderness Related Traits In Purebred Brahman Steers, Joshua Dean Domingue
LSU Master's Theses
Paternal half-sib groups of Brahman bull calves were purchased at weaning from purebred Brahman producers in Louisiana. Following backgrounding and grazing on ryegrass the steers shipped to a commercial feedlot in south Texas. Steers were slaughtered in groups when they reached an approximate average endpoint weight of 535 kg and 10mm backfat. After a 24 hr chill, carcasses were ribbed, data collected, and a longissimus muscle sample taken for calpastatin assay. Two 2.54 cm thick steaks were randomly removed from the large end of the strip loin, vacuum packaged, and randomly selected for 7 and 14 days of aging. Genetic …
Liquid Feeding In The Red Imported Fire Ant, Solenopsis Invicta Buren (Hymenoptera: Formicidae), Kathryn Shea O'Brien
Liquid Feeding In The Red Imported Fire Ant, Solenopsis Invicta Buren (Hymenoptera: Formicidae), Kathryn Shea O'Brien
LSU Master's Theses
In order to accurately test liquid bait effectiveness in the lab, we determined that a starvation time of 96h is more appropriate than 72h of starvation time for laboratory fire ants (Solenopsis invicta Buren) to better simulate foraging ants in the field. Densities and viscosities of two commercial baits and 20% sugar water at 25C were measured then compared to amount of material consumed per ant at these physical properties. Mean densities of 20% sugar water, Dr. Moss, and Terro were 1.051, 1.287, and 1.354 g/mL, respectively, and viscosity of each bait treatment varied in the same order but more …
Amino Acid Requirements And Low Crude Protein, Amino Acid Supplemented Diets For Swine And Poultry, Dustin Wade Dean
Amino Acid Requirements And Low Crude Protein, Amino Acid Supplemented Diets For Swine And Poultry, Dustin Wade Dean
LSU Doctoral Dissertations
The purpose of this research was to determine requirements for amino acids that limit the use of crystalline amino acids, to determine the effects of reducing crude protein, and to evaluate the problems associated with low crude protein diets for swine and poultry. Four experiments were conducted to determine the Lys and sulfur amino acid requirements for 5- to 10-kg pigs. The results of these experiments suggest pigs in this weight range require a diet containing 1.40% true digestible (TD) Lys and the ratio of sulfur amino acids to Lys is not greater than 0.54. Two experiments were conducted to …
Effects Of Protein Sources With Differing Ruminal Degradation Characteristics On Nutrient Digestibilities And Flows Through Various Segments Of The Gastrointestinal Tract Of Non-Lactating Holstein Cows, Taylor Whitney Braud
LSU Master's Theses
Six non-lactating Holstein cows with ruminal and duodenal cannulas were used in a replicated 3x3 Latin square design experiment to investigate the effects of supplemental protein source on ruminal and total tract nutrient digestibility. Supplemental protein was provided from soybean meal (SBM), expeller processed soybean meal (EXP), or menhaden fish meal (FM). Basal diets consisted of (DM basis) 33% corn silage, 20% bermudagrass hay, 27% ground corn, and 2% minerals and vitamins. Supplemental protein was provided as (DM % of total diet) 18% soybean meal (SOY), 17% soybean meal and 1% fish meal (FM), or 12% soybean meal and 6% …
Seasonal Abundance And Detection Of West Nile Virus In Ceratopogonids (Diptera: Ceratopogonidae) In East Baton Rouge Parish, Louisiana, Isidra Joselina Sabio
Seasonal Abundance And Detection Of West Nile Virus In Ceratopogonids (Diptera: Ceratopogonidae) In East Baton Rouge Parish, Louisiana, Isidra Joselina Sabio
LSU Master's Theses
The seasonal abundance and species composition of ceratopogonids (Diptera: Ceratopogonidae) in East Baton Rouge parish was described from light trap collections at 15 sites. A total of 4,968 collections were processed, and 48,667 ceratopogonids were collected from 20 November, 2002 through 25 November, 2004. Three genera of ceratopogonids (Forcipomyia Meigen, Atrichopogon Kieffer, and Culicoides Latrielle) and a total of 18 species of the genus Culicoides were identified. Ceratopogonids had distinctive spring and fall population peaks. Ceratopogonids were collected in every month during the study, with the exception of February 2004. These results suggest that certain species of Culicoides may …
Control Of Vibrio Vulnificus And Vibrio Parahaemolyticus In Oysters, Ligia Virginia Antonia Da Silva
Control Of Vibrio Vulnificus And Vibrio Parahaemolyticus In Oysters, Ligia Virginia Antonia Da Silva
LSU Doctoral Dissertations
Vibrio vulnificus and Vibrio parahaemolyticus are gram-negative halophilic bacteria found in the natural aquatic environment. V. vulnifcus and V. parahaemolyticus have been implicated in foodborne illness and can cause gastroenteritis that has been associated with consumption of raw or undercooked seafood. V. vulnificus can cause primary septicemia after its ingestion, and secondary septicemia through skin lesions in individuals with preexisting conditions such as elevated serum iron levels. Bacteriophages, viruses that invade and lyse bacteria, specific to V. vulnificus and V. parahaemolyticus are naturally found in seawater and oysters. Every summer, the oyster industry is threatened by recall of oysters due …
Phylogenetic Revision Of The Genus Mesynodites Reichardt (Coleptera: Histeridae: Hetaeriinae), Alexey K. Tishechkin
Phylogenetic Revision Of The Genus Mesynodites Reichardt (Coleptera: Histeridae: Hetaeriinae), Alexey K. Tishechkin
LSU Doctoral Dissertations
Mesynodites is the largest genus within the exclusively inquilinous (social insect-associated) histerid beetle subfamily Hetaeriinae (Insecta: Coleoptera: Histeridae). The 44 described species are systematically revised, and new taxa are described based on newly discovered species and the results of a cladistic analysis. The work was based on available type specimens representing 42 species and approximately 2500 specimens of non-type material. Phylogenetic hypotheses were based on maximum parsimony analysis of 150 morphological characters derived from a selection of Mesynodites species and representatives of related genera. This analysis confirmed that, in its current concept, Mesynodites is not a monophyletic taxon. Species included …
Development And Characterization Of Antimicrobial Edible Films From Crawfish Chitosan, Kandasamy Nadarajah
Development And Characterization Of Antimicrobial Edible Films From Crawfish Chitosan, Kandasamy Nadarajah
LSU Doctoral Dissertations
Inherent antibacterial/antifungal properties and film-forming ability of chitosan make it ideal for use as a biodegradable antimicrobial packaging material. This study was attempted to develop antimicrobial films from crawfish chitosan. Traditional chitosan production involves: deproteinization (DP), demineralization (DM), decolorization (DC), and deacetylation (DA). Modification of chitosan production affects film properties. Effects of chitosan production protocols, film-casting solvents, and plasticizer contents on physicochemical, mechanical and antibacterial properties were investigated. Four chitosans were prepared from traditional (DPMCA) and modified processes [excluding either DP, DC or both DP and DC]. Chitosan (1%w/v) was dissolved in 1% acetic, ascorbic, citric, formic, lactic and/or malic …
In Vitro And In Vivo Anti-Angiogenic Activities Of Milk Sphingolipids, Rishipal Rastrapal Bansode
In Vitro And In Vivo Anti-Angiogenic Activities Of Milk Sphingolipids, Rishipal Rastrapal Bansode
LSU Doctoral Dissertations
Anti-angiogenic therapies aimed at halting new blood vessel formation are now being extensively studied as inhibitors of excessive angiogenesis. Conversely, compounds with ability to stimulate angiogenesis are being considered as a therapeutic approach for insufficient angiogenesis. Food-borne bioactive compounds such as genistein, resveratrol, curcumin, the Bowman-Birk inhibitor, and catechins are being potentially established as good candidates for angioprevention. The aim of our study was to determine the anti-or pro-angiogenic activity of milk-based glycosphingolipids such as C6-ceramide (Cer), Sphingomyelin (SPM) and Glucosylceramide (GluCer), in vitro, using breast cancer (MCF-7), colon cancer (Caco-2) and prostate cancer (DU-145) cell-lines, on angiogenic factors such …
Development Of Non-Dairy Frozen Dessert Containing Soy Protein And Coconut Milk, Luciana Soler
Development Of Non-Dairy Frozen Dessert Containing Soy Protein And Coconut Milk, Luciana Soler
LSU Master's Theses
As consumers have pursued healthier lifestyles in recent years, consumption of soy foods has risen steadily, encouraged by scientific studies showing health benefits from these products. There is a large market for ice cream in the United States. However, since ice cream contains dairy ingredients, a number of Americans are not able to consume it because of dietary habits due to religious beliefs, lactose intolerance, vegetarianism or other related ideologies. For years, these groups of consumers have been able to substitute ice cream with frozen desserts containing soy protein as a substitute for milk protein, but never in the United …
Evaluation Of Lutein And Protein In Ozone Treated Corn, Yu Wang
Evaluation Of Lutein And Protein In Ozone Treated Corn, Yu Wang
LSU Master's Theses
The present study was conducted to determine the influence of an ozonation process on lutein and protein in clean and contaminated corns. This study aimed (1) to determine the levels of antimutagenic compounds to aflatoxin in corn before and after ozonation; (2) to verify the antimutagenic potential of these compounds against aflatoxin using the Ames test; and (3) to evaluate proteins in the corn before and after ozonation. HPLC was used to separate and identify the lutein in corn. Nitrogen analysis and SDS-PAGE were used to analyze protein content and molecular weights in corn. Clean ozone-treated corn had a total …
Food Safety And Sanitation Issues In Day Care Centers, Elizabeth Katherine Smith
Food Safety And Sanitation Issues In Day Care Centers, Elizabeth Katherine Smith
LSU Doctoral Dissertations
Day care center reports from the Louisiana Board of Health Sanitarians were generated from day care centers participating in the Child and Adult Care Food Program (CACFP) in the state of Louisiana. The types of violations reported included temperature abuse, lack of handwashing supplies, spoiled food, incorrect dishwashing procedures, and physical plant problems. A survey was developed and mailed to all 50 state CACFP Directors requesting information on the sanitary violations reported by their state sanitarians for day care centers participating in CACFP. The violations cited by the individual state CACFP Directors were similar to those reported by the Louisiana …
Effects Of Ozonation And Addition Of Amino Acids On Properties Of Rice Starches, Hee-Joung An
Effects Of Ozonation And Addition Of Amino Acids On Properties Of Rice Starches, Hee-Joung An
LSU Doctoral Dissertations
In this study, the effects of ozonation and the addition of amino acids on rice starches were determined in terms of pasting properties by using rapid visco-analyzer, thermal characteristics by using differential scanning calorimeter, crystallinity by using x-ray diffraction, and resistant starch yield. Results from viscosity analysis showed that the addition of lysine (6%) to ozonated Sigma rice starch significantly reduced peak viscosity (PV), minimum viscosity (MV), final viscosity (FV), and setback (SBK) by 918, 1024, 1023, and 105 cP, respectively. Moreover, it decreased pasting time, resulting in the faster swelling upon heating and less rigid gel formation upon cooling. …