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Articles 1 - 30 of 48
Full-Text Articles in Life Sciences
Louisiana Agriculture Fall, 2008, Lsu Agcenter
Louisiana Agriculture Fall, 2008, Lsu Agcenter
Louisiana Agriculture
No abstract provided.
Louisiana Agriculture Summer, 2008, Lsu Agcenter
Louisiana Agriculture Summer, 2008, Lsu Agcenter
Louisiana Agriculture
No abstract provided.
Xylose-Fermenting Yeast Species Found In The Wood Of Southeast Louisiana, Claire Reuter
Xylose-Fermenting Yeast Species Found In The Wood Of Southeast Louisiana, Claire Reuter
Honors Theses
No abstract provided.
Characterization Of A Non-Cytoplasmically Localized Dps Protein From Deinococcus Radiodurans, Brian Reon
Characterization Of A Non-Cytoplasmically Localized Dps Protein From Deinococcus Radiodurans, Brian Reon
Honors Theses
No abstract provided.
Toxic Gene Expression In Escherichia Coli Using Trpl As A Repressor, Ian Primm
Toxic Gene Expression In Escherichia Coli Using Trpl As A Repressor, Ian Primm
Honors Theses
No abstract provided.
Feasibility And Desirability Of Ethanol Production In The State Of Louisiana, John David Barreca
Feasibility And Desirability Of Ethanol Production In The State Of Louisiana, John David Barreca
Honors Theses
No abstract provided.
Responses Of The Sea Catfish, Ariopsis Felis, To Chemical Defenses From The Sea Hare, Aplysia Californica, Sheybani Arman
Responses Of The Sea Catfish, Ariopsis Felis, To Chemical Defenses From The Sea Hare, Aplysia Californica, Sheybani Arman
Honors Theses
No abstract provided.
Polyphasic Taxonomy Of A Group Of Globally Dispersed, Desiccation-Resistant Strains Of The Microvirga/Balneimonas Cluster, Bradley Tolar
Polyphasic Taxonomy Of A Group Of Globally Dispersed, Desiccation-Resistant Strains Of The Microvirga/Balneimonas Cluster, Bradley Tolar
Honors Theses
No abstract provided.
Hatchability Of End Of Lay Egg Production Broiler Breeder Eggs As Influenced By Prestorage Warming, Kyle Homan
Hatchability Of End Of Lay Egg Production Broiler Breeder Eggs As Influenced By Prestorage Warming, Kyle Homan
Honors Theses
No abstract provided.
The Effects Of Epidermal Growth Factor And Basic Fibroblast Growth Factor On Cryopreserved Human Adipose Derived Stem Cells In Culture: Proliferation, Adipogenesis, And Osteogenesis, Teddi Leigh Hebert
Honors Theses
No abstract provided.
Modeling Electric Fields In Microfluidic Devices, Micah Fincher
Modeling Electric Fields In Microfluidic Devices, Micah Fincher
Honors Theses
No abstract provided.
Louisiana Agriculture Spring, 2008, Lsu Agcenter
Louisiana Agriculture Spring, 2008, Lsu Agcenter
Louisiana Agriculture
No abstract provided.
Factors Potentially Influencing The Abundance Of Mosquitoes In Louisiana Rice Fields, Ana Maria Sanchez De Cuadra
Factors Potentially Influencing The Abundance Of Mosquitoes In Louisiana Rice Fields, Ana Maria Sanchez De Cuadra
LSU Master's Theses
The rice stink bug (Oebalus pugnax) is the major pest of late-season rice in Louisiana. Prior studies indicate that large populations of mosquitoes are often present in rice fields during the time that rice fields are infested with rice stink bugs. Lambda-cyhalothrin (Karate®) is widely used to control rice stink bugs. The purpose of this study was to determine if application of the insecticide Karate® at a rate of 0.033 kg/ha, for rice stink bug control had an effect on the population of mosquitoes in rice fields. This effect was assessed by monitoring natural populations of mosquitoes before and after …
Resistance To Bacillus Thuringiensis In Sugarcane Borer, Diatraea Saccharalis (F.), Xiaoyi Wu
Resistance To Bacillus Thuringiensis In Sugarcane Borer, Diatraea Saccharalis (F.), Xiaoyi Wu
LSU Doctoral Dissertations
The sugarcane borer, Diatraea saccharalis (F.), is a dominant corn stack boring pest and a major target of Bacillus thuringiensis (Bt)-corn in many areas of the mid-southern region of the United States. A Cry1Ab-resistant strain of D. saccharalis, capable of survival on commercial Bt corn plants, was established using an F2 screening procedure. Larval survival of Cry1Ab-resistant, -susceptible, and -heterozygous genotypes was evaluated on five non-Bt and seven Bt field corn hybrids at two plant stages. During the vegetative stages, all seven Bt corn hybrids were highly efficacious against the three genotypes, while 8-18% of the heterozygous genotype survived on …
The Use Endocrine Markers To Predict And Monitor Performance In Strengh [Sic] And Power Activities, Jason B. Winchester
The Use Endocrine Markers To Predict And Monitor Performance In Strengh [Sic] And Power Activities, Jason B. Winchester
LSU Doctoral Dissertations
Hormones are typically considered to be chemical messengers, which are designed to be released from specific cells where they are carried to their target tissues for binding to receptors. It is this binding of a hormone molecule to its specific receptor which allows for an action to occur (Hadley and Levine 2006). Testosterone is the predominant androgen in the majority of mammalian species and is largely responsible for regulation of reproduction and maintenance of sexual function. In addition, in adult mammals, T has multiple other roles including the growth of muscle and bone, hematopoesis, blood coagulation, development and regulation of …
Is Oxidative Stress The Cause Of Death When Recalcitrant Spartina Alterniflora Seeds Are Dried?, James Hammond Chappell
Is Oxidative Stress The Cause Of Death When Recalcitrant Spartina Alterniflora Seeds Are Dried?, James Hammond Chappell
LSU Doctoral Dissertations
Recalcitrant seeds, which die when desiccated, can be difficult to study because of their generally large size, high metabolism, and poor storage properties. However, recalcitrant seeds from the salt-marsh grass Spartina alterniflora are unique when compared to most other recalcitrant species because the seeds are dormant and small; Spartina pectinata and S. spartinae, which produce orthodox seeds, can be used as controls. Because of these somewhat rare characteristics, S. alterniflora is a good model system to study recalcitrance. In the present study, the following physiological parameters were examined: Cardinal temperatures for germination, a viability test to determine if seeds are …
Influences Of Maternal Corticosterone On Incubation Length And Hatchability Of Eggs Laid By Quail Hens Selected For Divergent Adrenocortical Stress Responsiveness, Jason Berante' Schmidt
Influences Of Maternal Corticosterone On Incubation Length And Hatchability Of Eggs Laid By Quail Hens Selected For Divergent Adrenocortical Stress Responsiveness, Jason Berante' Schmidt
LSU Master's Theses
Unstressed and stressed quail hens selected for exaggerated (HS, high stress) rather than reduced (LS, low stress) plasma corticosterone (B) response to brief restraint deposit more B into their eggs than do their LS hen counterparts. HS hens implanted with B also show reduced egg lay when compared to LS- and HS-control and LS-B-implanted hens. Herein, the effects of stress line on length of egg incubation (LEI) and chick body weight at emergence (BWTE) (Exp. 1) and the interactive influences of line with maternal B-treatment (sub-Q control, CON-, or B-implants) on LEI (Exp. 2) and on egg fertility (FERT), total …
Evaluation Of Aflatoxin-Related Products From Ozonated Corn, Alfredo Domingo Prudente, Jr.
Evaluation Of Aflatoxin-Related Products From Ozonated Corn, Alfredo Domingo Prudente, Jr.
LSU Doctoral Dissertations
This study assessed the efficacy of the ozonation process in degrading aflatoxin in corn, and investigated the chemical reaction between aflatoxin and gaseous ozone. Ozonation (12-13 wt%) totally degraded aflatoxin B1 in a model system. Conversion of aflatoxin into polar compounds was observed during ozonolysis of 100 µg aflatoxin B1 in an aqueous environment and in solid form. Seven intermediate reaction products were separated by two-dimensional thin layer chromatography. HPLC analysis of ozonated AFB1 revealed the presence of six major peaks. MALDI-MS analysis detected compounds that have higher molecular weights than AFB1. The dichloromethane fraction contained compounds with molecular ion …
Exercise And Peripheral Vascular Function In Health And Disease, Arturo Arce
Exercise And Peripheral Vascular Function In Health And Disease, Arturo Arce
LSU Doctoral Dissertations
“Chronic disease will never reach its clinical horizon to compromise health if it is attacked at its origin” [1]. Knowledge that one’s risk for cardiovascular events is related to the severity of endothelial dysfunction, and evidence that exercise training can improve endothelial function, has prompted speculation that measures of vascular function may serve as a “barometer” for cardiovascular health. This dissertation consists of three experiments intended to study vascular function and the manner in which it may influence or may be influenced by physical function. Project one examined the influence of high and low volume circuit weight training on forearm …
Systematically Increasing Contextual Interference Is Beneficial For Learning Novel Motor Skills, Jared Marak Porter
Systematically Increasing Contextual Interference Is Beneficial For Learning Novel Motor Skills, Jared Marak Porter
LSU Doctoral Dissertations
Traditionally, contextual interference (CI) has been investigated by the use of extreme low and high levels of CI (blocked and random practice schedules); with results generally suggesting that higher rather than lower amounts of CI facilitated motor skill learning (Magill & Hall, 1990). To better understand the CI effect, two experiments were conducted investigating an alternative form of practice schedule. Practice using this alternative schedule provided novices experiences with systematic increases in CI, which were compared to traditional blocked and random scheduling. Experiment 1 tested the hypothesis that practicing variations of the same tasks with systematic increases in CI would …
The Influence Of Peripheral Neuropathy On Walking Kinematics And Physical Function, Bradley Manor
The Influence Of Peripheral Neuropathy On Walking Kinematics And Physical Function, Bradley Manor
LSU Doctoral Dissertations
The 108th Congress (2005) has reported that 20 million U.S. citizens suffer from Peripheral Neuropathy (PN). Characterized by sensory nerve deterioration, PN reduces somatosensation (Padua et al., 2005) and increases the risk of fall-related injury (Richardson et al., 1992). The purpose of this dissertation was to provide insight into 1) the effects of acute loss of foot sole sensation on locomotor system health, 2) the effects of PN on locomotor system health, and 3) the underlying impairments associated with reduced physical function within the older adult and PN populations. Locomotor system health was assessed by the magnitude of stride-to-stride variability …
Survival, Growth, And Behavior Of Helicoverpa Zea (Boddie) And Heliothis Virescens (F.) (Lepidoptera: Noctuidae) On Genetically Engineered Cotton Expressing The Vip3a Insecticidal Protein, Padma Latha Bommireddy
Survival, Growth, And Behavior Of Helicoverpa Zea (Boddie) And Heliothis Virescens (F.) (Lepidoptera: Noctuidae) On Genetically Engineered Cotton Expressing The Vip3a Insecticidal Protein, Padma Latha Bommireddy
LSU Doctoral Dissertations
Larval behavior, survivorship, and injury potential of Helicoverpa zea (Boddie), and tobacco budworm, Heliothis virescens (F.), was evaluated on cotton plants genetically engineered to express Bacillus thuringiensis (Bt) insecticidal proteins, Vip3A and Vip3A +Cry 1Ab (VipCot™). Larvae (2-d-old) of both species were infested on plant terminals of vegetative or flowering stage cotton plants. Regardless of species, more larvae migrated from the plant terminals of Vip3A and VipCot plants compared to larvae infested on a conventional non-Bt cotton line (Coker 312). Larval (2-d-old) survivorship on VipCot™ plant structures was generally lower than that on similar structures of the Vip3A cotton line. …
Novel Methods For The Control Of Phlebotomine Sand Flies (Diptera: Psychodidae), Thomas Michael Mascari
Novel Methods For The Control Of Phlebotomine Sand Flies (Diptera: Psychodidae), Thomas Michael Mascari
LSU Doctoral Dissertations
In arid and semi-arid parts of the Old World, Phlebotomus paptasi is a significant biting pest of man and is the primary vector of Leishmania major, the causative agent of zoonotic cutaneous leishmaniasis (ZCL). Phlebotomus papatasi exhibits a close association with the burrowing rodents that serve as the reservoirs of L. major. Rodent burrows are considered to be the primary habitat of immature P. papatasi in ZCL foci, and sand fly larvae have been observed feeding on rodent feces. In laboratory studies, five insecticides (diflubenzuron, novaluron, methoprene, pyriproxyfen, or ivermectin) were incorporated into the diet of Syrian hamsters and evaluated …
A Comparison Of Fall-Related Psychological Measures In A Community-Based Setting, Delilah Susanne Moore
A Comparison Of Fall-Related Psychological Measures In A Community-Based Setting, Delilah Susanne Moore
LSU Doctoral Dissertations
Falls and the fall-related psychological concerns associated with these events pose a serious public health problem among aging adults. Fall-related psychological instruments can be useful in quantifying important endpoints for fall prevention programs (Jorstad et al., 2005), yet no research currently exists to justify the use of these psychological instruments in a community-based falls risk screening. Therefore, the purpose of this dissertation was to examine the psychometric properties of several fall-related psychological measures in a falls risk screening context by: (a) examining the reliability and validity of the Falls Efficacy Scale-International (FES-I), Activities-specific Balance Confidence (ABC), modified Survey of Activities …
Wax Extraction And Characterization From Full-Fat And Defatted Rice Bran, Junghong Kim
Wax Extraction And Characterization From Full-Fat And Defatted Rice Bran, Junghong Kim
LSU Doctoral Dissertations
Rice bran oil (RBO) contains 3-4% waxes (rice bran wax, RBW), which are composed of wax esters (WE), hydrocarbons, and other minor constituents. Saponified rice bran wax esters (RBWE) generate fatty acids, long chain alcohols, and phytosterols. Phytosterols and long chain fatty alcohols (policosanol) are known to reduce serum cholesterol and inhibit hepatic cholesterol synthesis. The yields and RBWE contents of RBO and RBW extracted from full-fat RB (FFRB) and defatted RB (DFRB) were determined using 6 different conditions with Soxhlet and Microwave-assisted extraction (MAE). The compositions of WEs from RBO and RBW were also compared. RBW was obtained from …
Development And Quality Evaluation Of Pre- And Post-Workout Sport Beverages, Maria Christine Pfister
Development And Quality Evaluation Of Pre- And Post-Workout Sport Beverages, Maria Christine Pfister
LSU Master's Theses
Athletes and gym goers are continuously searching for sports supplements that will set them apart from others. Resistance training is a popular form of exercise that enables one to increase in strength and power. Resistance or strength training, however, results in several degradation processes. A popular way of enhancing workouts and recovering after workouts is through the consumption of sports drinks. In study one, a preliminary study, eight pre-workout and eight post-workout sports drinks were formulated that contained whey proteins, sugars, natural fruit flavors, and other vitamins and supplements. A consumer acceptance test was preliminarily conducted to evaluate consumer acceptability …
Characterizing The Epidemiology Of Bluetongue Virus Serotype One In South Louisiana, Michael Edward Becker
Characterizing The Epidemiology Of Bluetongue Virus Serotype One In South Louisiana, Michael Edward Becker
LSU Master's Theses
In November 2004, bluetongue virus (BTV) serotype 1 was detected for the first time in the U.S. from a hunter-killed deer in the marsh area of the Atchafalaya Delta in St. Mary Parish, LA. Subsequent serum surveys of three cattle farms further inland from the area where the deer was shot found bluetongue virus serotype 1 positive cattle on two of the three farms. The purpose of this study was to determine potential BTV vectors in the area where BTV-1 positive animals were detected and compare different trapping techniques for capturing specimens of the genus Culicoides. The study was conducted …
Analysis Of The Impact And Importance Of Re-Wholesalers In The Ornamental Market, Marco Absalón Velástegui
Analysis Of The Impact And Importance Of Re-Wholesalers In The Ornamental Market, Marco Absalón Velástegui
LSU Master's Theses
Sales by ornamental nurseries in the United States have grown, recently, at an impressive rate. For example, sales of the greenhouse and nursery crops component increased about 18% from 2000 to 2006 (USDA, 2007). The evolution of a diverse set of market channel alternatives, including the garden center, landscaper, home center, mass merchandiser and re-wholesaler channels, has been one of the reasons for this growth. Knowledge about growers’ use of the individual marketing channels is indispensable for the development of appropriate sales strategies for better income and profits. Periodic survey data indicates that the re-wholesaler channel is a frequently used …
The Use Of Serum Uric Acid As An Indicator Of Amino Acid Utilization In Diets For Broilers, Amanda L. Donsbough
The Use Of Serum Uric Acid As An Indicator Of Amino Acid Utilization In Diets For Broilers, Amanda L. Donsbough
LSU Master's Theses
The purpose of this research was to determine if serum uric acid (SUA) could be used as an indicator of amino acid (AA) utilization in broilers and to determine the Lys requirement of broilers using SUA as a response variable. Treatments were replicated with at least 6 pens with at least 6 broilers per pen. Experiments (Exp.) were conducted from 0- to 14, 17, or 18- d posthatching in brooder batteries. Five experiments were conducted to determine if SUA and uric acid content of the excreta (UAE) could be used to determine AA adequacy of a diet. The results of …
The Effects Of Quercetin On Skeletal Muscle Mitochondrial Biogenesis And Oxphos Regulation, Jeff Lee Soileau
The Effects Of Quercetin On Skeletal Muscle Mitochondrial Biogenesis And Oxphos Regulation, Jeff Lee Soileau
LSU Master's Theses
A high fat diet causes a reduction in the expression of the genes of the electron transport chain, mitochondrial carrier proteins, and PGC-1α and PGC-1ß mRNA. Mitochondrial dysfunction has been linked to numerous chronic diseases. The antioxidant quercetin has been shown to protect against damage caused by exogenous and endogenous free radicals. The purpose of this study was to determine if quercetin would protect the genes of mitochondrial biogenesis (PGC-1α and PGC-1ß) and OXPHOS regulation (NDUFB5 and SDHB) from the downregulation caused by consumption of a high fat diet. The quadriceps muscle was removed from 21 male, C57BL/6J mice that …