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Articles 1141 - 1170 of 2496
Full-Text Articles in Life Sciences
His-Tagged And Myc-Tagged Βca Fusion Genes May Aid In The Characterization Of The Role Of Carbonic Anhydrases In Photosynthesis, Dequantarius Speed
His-Tagged And Myc-Tagged Βca Fusion Genes May Aid In The Characterization Of The Role Of Carbonic Anhydrases In Photosynthesis, Dequantarius Speed
Honors Capstones
No abstract provided.
Identification Of A New Fatty Acid Catabolic Pathway During Heterotrophic Growth In Chlamydomonas Reinhardtii, Clayton Mccuiston
Identification Of A New Fatty Acid Catabolic Pathway During Heterotrophic Growth In Chlamydomonas Reinhardtii, Clayton Mccuiston
Honors Capstones
No abstract provided.
Crematogaster Pilosa Ants As Bioindicators Of Ecosystem Marsh Health, Elliott R. Thompson
Crematogaster Pilosa Ants As Bioindicators Of Ecosystem Marsh Health, Elliott R. Thompson
Honors Capstones
No abstract provided.
Mobilization Of Alu Elements Throughout Papio And Theropithecus Genomes, Emily Bennett
Mobilization Of Alu Elements Throughout Papio And Theropithecus Genomes, Emily Bennett
Honors Capstones
No abstract provided.
Louisiana Agriculture Winter, 2015
Structure Activity Relationships Of Biotin Carboxyl Carrier Protein Of E. Coli Acetyl-Coa Carboxylase, Amanda Breaux
Structure Activity Relationships Of Biotin Carboxyl Carrier Protein Of E. Coli Acetyl-Coa Carboxylase, Amanda Breaux
Honors Capstones
No abstract provided.
Aggressiveness In Inland And Coastal Colonies Of Solenopsis Invicta, Desmarie Stewart
Aggressiveness In Inland And Coastal Colonies Of Solenopsis Invicta, Desmarie Stewart
Honors Capstones
No abstract provided.
Manual For Ageing And Sexing Birds Of Bosque Fray Jorge National Park And Northcentral Chile, With Notes On Range And Breeding Seasonality, Peter Pyle, Andrew Engilis, Douglas A. Kelt
Manual For Ageing And Sexing Birds Of Bosque Fray Jorge National Park And Northcentral Chile, With Notes On Range And Breeding Seasonality, Peter Pyle, Andrew Engilis, Douglas A. Kelt
Special Publications of the Museum of Natural Science
Bosque Fray Jorge National Park (hereafter "Fray Jorge") comprises 9,959 ha on the coast of Chile’s Region IV (Coquimbo), approximately 400 km north of Santiago and 100 km south of La Serena (30°41’S, 71°40’W) (Fig. 1). It is a Biosphere Reserve and has been protected from grazing and disturbance since 1941 (Squeo et al. 2004). As such, it is a biotic oasis surrounded by agricultural and increasingly disturbed terrain (Bahre 1979). The climate is Mediterranean, with ca. 130 mm of annual precipitation measured since 1989 at an on-site meteorological station, 90% falling in winter (May-Sept). Summers are warm and dry, …
Manual Para Estimar Edad Y Sexo En Aves Del Parque Nacional Bosque Fray Jorge Y Chile Central, Con Notas Sobre Rangos De Distribución Y Estación Reproductiva, Peter Pyle, Andrew Engilis Jr., Douglas A. Kelt
Manual Para Estimar Edad Y Sexo En Aves Del Parque Nacional Bosque Fray Jorge Y Chile Central, Con Notas Sobre Rangos De Distribución Y Estación Reproductiva, Peter Pyle, Andrew Engilis Jr., Douglas A. Kelt
Special Publications of the Museum of Natural Science
El Parque Nacional Fray Jorge (en adelante "Fray Jorge") comprende 9.959 ha. en la costa de la IV Región de Chile (Coquimbo), a unos 400 km al norte de Santiago y a 100 km al sur de La Serena (30 ° 41'S, 71 ° 40'W) (Fig. 1). Se trata de una Reserva de la Biosfera que se ha protegido del pastoreo y las perturbaciones antrópicas desde 1941 (Squeo et al. 2004). Como tal, es un oasis biótico rodeado de áreas agrícolas cada vez más intervenidas por el hombre (Bahre 1979). El clima es mediterráneo, con 130 mm de precipitación anual, …
Effects Of Milk Replacer And Multivitamin-Mineral Supplementation On Performance Of Heat Stressed Dairy Calves, Steven Joseph Blair
Effects Of Milk Replacer And Multivitamin-Mineral Supplementation On Performance Of Heat Stressed Dairy Calves, Steven Joseph Blair
LSU Master's Theses
Seventy-one Holstein calves were used to evaluate the effects of milk replacer (MR) feeding management alone or in combination with a multivitamin-electrolyte supplement on growth and mitigation of heat stress. Milk replacer treatments consisted of Land O’Lakes Herdmaker Supreme (20% CP, 20% fat) and Land O’Lakes Warm Front (27% CP, 10% fat). Calves received either 0 or 20 ml Palamountains Calf Boost® in MR once daily. Calves were offered treatments beginning on day 4. Calves on 27% CP : 10% fat MR were fed 2.72kg MR twice daily for the first three weeks of life, and 3.86kg twice daily until …
An Investigation Of The Quality And Quantity Of Student Motivation In Physical Education, Trey Douglas Willoughby
An Investigation Of The Quality And Quantity Of Student Motivation In Physical Education, Trey Douglas Willoughby
LSU Master's Theses
Physical inactivity is a prevalent problem in the United States associated with numerous health risk factors. Over half the population fails to meet prescribed physical activity recommendations, suggesting that individuals become less active as they age. It is important to observe individuals in the Physical Education setting because it is an ideal environment to provide meaningful physical activity, while promoting lifetime physical activity. This research sought to understand motivational behaviors in high school adolescents, attempting to draw links between physical education, student satisfaction, and leisure-time physical activity. Three research questions were present: (1) What relationships do high school student perceive …
Herbivore Response To Soybean Under Differing Induction Methods, John L. Dryburgh
Herbivore Response To Soybean Under Differing Induction Methods, John L. Dryburgh
LSU Master's Theses
Plants are attacked by a variety of herbivore feeding guilds and respond with specific responses to specific attacks, which may be localized or systemic. How a plant defends against one feeding guild may alter the plant’s response against a different feeding guild. A better understanding of these interactions will allow for the development of refined pest management programs. One situation in which this may occur is in interactions between chewing and piercing/sucking herbivores, such as aphids. Aphids are important crop pests primarily due to their ability to transmit viruses, the efficacy of which can be affected by plant defenses. To …
Evaluating The Effects Of Vacuum Tumbling With Chitosan Nanoparticles And Water-Soluble Chitosan On The Shelf Life Of Cryogenically Frozen Shrimp, Alexander Chouljenko
Evaluating The Effects Of Vacuum Tumbling With Chitosan Nanoparticles And Water-Soluble Chitosan On The Shelf Life Of Cryogenically Frozen Shrimp, Alexander Chouljenko
LSU Master's Theses
Chitosan (CH) is a biopolymer obtained from the deacetylation of chitin, a polysaccharide present in the exoskeleton of crustaceans and cell walls of fungi. Application of CH may be limited by its water-insolubility. It can be dissolved in acids and forms relatively high viscosity solutions. CH solutions have antioxidant and antimicrobial properties. CH penetration into shrimp may be facilitated by vacuum tumbling with low viscosity chitosan-sodium tripolyphosphate (CH-TPP) nanoparticle or water-soluble chitosan (WSC) solutions. It is expected that this would reduce lipid oxidation and microbial loads. In this study, CH-TPP and WSC solutions were developed and applied to shrimp, and …
Evaluation Of The Impact Of Changes In Commodity Income Support Measures Included In The Agricultural Act Of 2014 On Equitable Louisiana Rice Production Rental Arrangements, Abdallahi Ould Abderrahmane
Evaluation Of The Impact Of Changes In Commodity Income Support Measures Included In The Agricultural Act Of 2014 On Equitable Louisiana Rice Production Rental Arrangements, Abdallahi Ould Abderrahmane
LSU Master's Theses
ABSTRACT This research uses a Simetar simulation technique to evaluate the effect of the adoption of the Price Loss Coverage program included in the 2014 Agricultural Act on Louisiana’s rice equitable rental arrangement choices. Two scenarios are examined: one in which prices of the last three years are detrended and a second one in which they are not detrended. Each scenario includes six rental arrangements (Cash rent, Fixed Price, Fixed Yield, 60/40, 70/30, 80/20) and each rental arrangement has four adjustments (base, price trigger, yield trigger, and price and yield trigger). Three different risk measure analysis were conducted: Mean-Variance, Value …
Effects Of Minor Elements On Cercospora Kikuchii, Cercospora Leaf Blight And Rust On Soybeans, Brian Michael Ward
Effects Of Minor Elements On Cercospora Kikuchii, Cercospora Leaf Blight And Rust On Soybeans, Brian Michael Ward
LSU Master's Theses
Soybean (Glycine max) is one of the most widely grown crops in the world. Many pathogens attack soybeans, but of particular importance to tropical and subtropical areas such as Louisiana is Cercospora leaf blight (CLB). This disease is caused by the fungus Cercospora kikuchii and favored by high temperatures. This fungus utilizes a toxin, cercosporin, as its primary pathogenicity factor. Soybean rust (SBR), caused by Phakopsora pachyrhizi, is another common disease that occurs in Louisiana under cooler environmental conditions of spring and fall. Both diseases occur regularly in Louisiana and may result in severe yield losses. Cercospora kikuchii has recently …
Evaluation Of Whey-Protein-Isolate Edible Films Containing Oregano (Origanum Vulgare) Essential Oil To Improve Shelf Life Of Cheeses During Refrigerated Storage, Cristhiam Gurdian
Evaluation Of Whey-Protein-Isolate Edible Films Containing Oregano (Origanum Vulgare) Essential Oil To Improve Shelf Life Of Cheeses During Refrigerated Storage, Cristhiam Gurdian
LSU Master's Theses
Oregano essential oil (OEO) is recognized for antimicrobial and antioxidant properties. Incorporation of OEO into an edible film prepared with whey protein isolate (WPI) may improve the shelf-life of queso blanco (cheese). The overall goal of the proposed study was to develop and evaluate the effectiveness of antimicrobial and antioxidant WPI edible films (WPIFs) with OEO to improve the shelf life of queso blanco wrapped in the WPIFs during one month of refrigerated storage. Production of potential antimicrobial and antioxidant WPIFs with OEO (WPIOF) was possible. Flaxseed oil (FO) was incorporated into cheese by homogenization (HFQ), which caused significant susceptibility …
Effectiveness Of An Artisanal Mcphail Trap For Mass Trapping Tephritid Fruit Flies In Haiti, Fractyl Mertilus
Effectiveness Of An Artisanal Mcphail Trap For Mass Trapping Tephritid Fruit Flies In Haiti, Fractyl Mertilus
LSU Master's Theses
Three field experiments were conducted in a mango orchard in Croix-des-bouquets (Haïti) to develop an effective artisanal McPhail trap, less expensive than the commercial traps, for mass trapping Anastrepha obliqua (Macquart) and Anastrepha suspensa (Loew). A field trial conducted to evaluate the effectiveness of two newly made artisanal trap models (AT1 and AT2) with the commercial McPhail trap (MP) demonstrated that the artisanal traps yielded similar results in the average number of fruit flies caught (8.9±2.6, 13±2.9, and 16±4.1 respectively). Moreover, the cost-efficacy ratio was a lot higher in the artisanal trap models (AT1: 0.42 $ per flies caught, AT2: …
The Effect Of Processing Method Of Distiller's Dried Grains With Solubles On Hen Egg Production, Egg Quality, And Yolk Color, Lindsay Renee Brunet
The Effect Of Processing Method Of Distiller's Dried Grains With Solubles On Hen Egg Production, Egg Quality, And Yolk Color, Lindsay Renee Brunet
LSU Master's Theses
Distiller’s dried grains with solubles (DDGS) is a common byproduct of the ethanol industry and is used in animal feeds. Carotenoids (xanthophylls) are already present in the human eye, and increasing the amount of carotenoids in the eye can help prevent eye diseases. The purpose of this research was to confirm that adding DDGS to standard corn and soybean meal hen diets may increase the amount of lutein available in egg yolks. An experiment was conducted with Hy-Line W-36 hens to evaluate the effects of DDGS in corn-soybean meal diets. Three hundred fifteen hens were fed one of seven treatment …
Study Of Factors Affecting Growth And Development Of Narrow Brown Leaf Spot Of Rice Caused By Cercospora Janseana (Racib.) O. Const., Kirandeep Kaur Mani
Study Of Factors Affecting Growth And Development Of Narrow Brown Leaf Spot Of Rice Caused By Cercospora Janseana (Racib.) O. Const., Kirandeep Kaur Mani
LSU Doctoral Dissertations
Studies evaluated the effects of planting date, cultivar susceptibility, fungicide application timing, nitrogen management, and tillage practices on the severity of narrow brown leaf spot of rice (NBLS) caused by Cercospora janseana. All factors evaluated affected NBLS severity. The mid-April planted rice had less NBLS as compared to mid-May, late planted rice. Propiconazole fungicide (Tilt) application at panicle initiation or early boot stage was found equally effective in terms of disease reduction in mid-April planting while panicle initiation stage was the best time to apply fungicide in the late planting (mid-May). Early onset and higher severity of NBLS was observed …
Fermentable Non-Digestible Dietary Fiber And Bioactive Compounds Affect Aging And Fat Deposition In Caenorhabditis Elegans, Chenfei Gao
LSU Doctoral Dissertations
Overweight and obesity have been imposing $147 billion a year to the health care system in the United States. Limited medications are available in the market with side effects. Surgical treatments are second-line obesity treatments. Short chain fatty acids (SCFAs) produced from the fermentable resistant starch improves the secretion of satiety hormones peptide YY (PYY) and glucagon-like peptide 1 (GLP-1) from L-endocrine cells of cecum and colon. We hypothesized that consumption of fermentable non-digestible dietary fiber and bioactive compounds will increase insulin sensitivity, reduce body fat, and improve healthspan in Caenorhabditis elegans (C. elegans), and hyperglycemia (2% glucose) that may …
Sensory Perception Of Saltiness And Bitterness In Oil-In-Water Emulsions, Damir Dennis Torrico
Sensory Perception Of Saltiness And Bitterness In Oil-In-Water Emulsions, Damir Dennis Torrico
LSU Doctoral Dissertations
The objective of this research was to evaluate saltiness and bitterness perception in oil-in-water emulsion systems. For that purpose, three experiments were performed: A sensory threshold study, a descriptive sensory and physical property evaluation, and a psychophysical assessment of taste perception in emulsion systems. Experiment-I: Sensory detection and recognition thresholds of NaCl, caffeine, and KCl in aqueous-solutions vs. oil-in-water emulsions were evaluated. For saltiness recognition thresholds, KCl thresholds were higher compared to those of NaCl. For NaCl and KCl, emulsions did not significantly affect the saltiness recognition threshold compared to that of solutions. The bitterness recognition thresholds of caffeine and …
Cryopreservation Of Domestic Cat Epididymal Spermatozoa, Jesse Ray Saenz
Cryopreservation Of Domestic Cat Epididymal Spermatozoa, Jesse Ray Saenz
LSU Doctoral Dissertations
The primary lines of defense in preventing any exotic species from becoming endangered or extinct should be the protection of their habitat and from poaching. For wildlife conservationists, these primary measures are often not feasible, and thus cannot be the only means to prevent extinction. The objective of this research was to identify a semen extender that contained little to no egg yolk and could still effectively freeze domestic cat epididymal spermatozoa, for the purpose to sort spermatozoa into X and Y, using flow cytometry. In the first experiment we compared a TesT (Tes + Tris) 20% egg yolk extender …
Integrated Multiple-Tactic Management Of The Redbanded Stink Bug On Soybeans In Louisiana, Miyanda Nzala Moonga
Integrated Multiple-Tactic Management Of The Redbanded Stink Bug On Soybeans In Louisiana, Miyanda Nzala Moonga
LSU Doctoral Dissertations
Stink bugs (Hemiptera: Pentatomidae) are major pests of soybeans in Louisiana and heavy infestations often lead to economic losses. The stink bug species complex has changed in the past decade with the prevalence of the invasive redbanded stink bug, Piezodorus guildinii (Westwood), which causes greater damage than other stink bug species. Moreover, control of the redbanded stink bug has been faced with challenges because it is less sensitive to recommended insecticides. Therefore, studies were conducted to evaluate different control options for P. guildinii. Among the studies conducted was the current status of egg parasitoids of stink bugs in Louisiana. Telenomus …
Health Effects Of Dietary Fermentable Fiber (Resistant Starch), Diana Gabriela Carvajal-Aldaz
Health Effects Of Dietary Fermentable Fiber (Resistant Starch), Diana Gabriela Carvajal-Aldaz
LSU Doctoral Dissertations
Resistant starch (RS) reaches the large intestine for fermentation and is considered a prebiotic. We wanted to determine if we could reduce fermentation for future mechanistic studies and how there is improved insulin sensitivity in human studies with or without increased incretin hormone glucagon-like peptide 1 (GLP-1). Two main studies were performed. In the first main study, low potency antibiotics (Ampicillin 1g/L and Neomycin 0.5g/L) were added to the drinking water of rats to reduce fermentation of RS. Antibiotics were used either prior (first) to or during (second) feeding of RS. Results demonstrated that low potency antibiotics given prior to …
Dietary Strategies To Influence Appetite: Effects Of Oat Beta-Glucan And Thylakoids From Spinach On Satiety And Reward-Induced Eating Behavior, Candida Joan Rebello
Dietary Strategies To Influence Appetite: Effects Of Oat Beta-Glucan And Thylakoids From Spinach On Satiety And Reward-Induced Eating Behavior, Candida Joan Rebello
LSU Doctoral Dissertations
The objective of these studies was to examine the effects of oat-based cereals and a spinach extract, on eating behavior. The cereals compared included instant oatmeal (IO), old fashioned oatmeal (SO), and a ready to eat cereal (RTEC), each containing the soluble fiber beta-glucan. The spinach extract containing thylakoids, the internal photosynthetic membrane of plants, was compared with a placebo. The first study, a randomized crossover trial compared the effect of IO and SO on subjective ratings of satiety, with the RTEC. Subjects consumed isocaloric 150kcal servings of the cereals in random order. Visual analogue scale ratings evaluating satiety were …
Recovery From Exercise: The Influences Of Supplementation And Rest Interval, Ryan Miskowiec
Recovery From Exercise: The Influences Of Supplementation And Rest Interval, Ryan Miskowiec
LSU Doctoral Dissertations
Recovery from exercise is immensely important and under studied. The experiments conducted throughout this research have focused on testing the effects of rest interval during resistance exercise and the efficacy of acetic acid feeding on recovery rate. To elucidate the relationship between rest interval and recovery energy expenditure two experiments were undertaken. These experiments were designed to alter only rest interval while maintaining work intensity and volume. No difference in the total energy expenditure during the short phase of recovery (first hour) was found, but energy expenditure during the prolonged phase (days post exercise) was minorly increased by lowering rest …
Evolutionary Relationships Among Fungal Soybean Pathogens And Molecular Marker Development In The Genus Cercospora, Sebastian Albu
Evolutionary Relationships Among Fungal Soybean Pathogens And Molecular Marker Development In The Genus Cercospora, Sebastian Albu
LSU Doctoral Dissertations
Cercospora leaf blight (CLB) and purple seed stain (PSS) are common soybean diseases in the Gulf South of the United States (USA). For nearly a century, Cercospora kikuchii has been considered as the only pathogen causing these diseases. However, previous reports of genetic diversity among isolates collected throughout Louisiana suggested the presence of multiple lineages or species. Recent systematic studies classified species of Cercospora using a taxonomic system based on phylogenetic analysis of five nuclear loci (legacy genes). Using a similar approach, cercosporoid fungi tentatively identified as C. kikuchii were evaluated along with 53 other species of Cercospora. No …
Three Essays On Land Ownership, Gender, And Agricultural Productivity In The Case Of Developing Countries, Krishna H. Koirala
Three Essays On Land Ownership, Gender, And Agricultural Productivity In The Case Of Developing Countries, Krishna H. Koirala
LSU Doctoral Dissertations
This dissertation set out to evaluate the impact of land ownership and role of gender to the Filipino farmers and to investigate gender difference in agricultural productivity and technical efficiency of Malawian rural households. The first essay investigates the impact of land ownership on the productivity and technical efficiency of rice farmers in the Philippines. We use a 2007-2012 Loop Survey from the International Rice Research Institute (IRRI) and analyzed it by using a stochastic frontier function method. Results show that land ownership has a significant impact on technical efficiency. In particular, counter to the theory, the Comprehensive Agrarian Reform …
Impact And Management Of The Mexican Rice Borer (Lepidoptera: Crambidae) In Bioenergy Crop Agroecosystems, Matthew Travis Vanweelden
Impact And Management Of The Mexican Rice Borer (Lepidoptera: Crambidae) In Bioenergy Crop Agroecosystems, Matthew Travis Vanweelden
LSU Doctoral Dissertations
The Mexican rice borer, Eoreuma loftini (Dyar) (Lepidoptera: Crambidae) is an invasive stem borer pest of sugarcane, rice, corn, and sorghum, and poses a threat to the production of dedicated bioenergy feedstocks in the U. S. Gulf Coast region. Studies were conducted to assess insect-plant interactions between E. loftini and bioenergy and conventional cultivars of sugarcane and sorghum, including yield response, oviposition preference, and host suitability. In addition, the efficacy of select cultural and biological control tactics to manage E. loftini in these crops was assessed. Bioenergy sugarcane (energycane) and sweet sorghum exhibited reduced E. loftini injury; however, these crops …
Three Essays On Economic Analysis Of Production Systems Of U.S. Grass-Fed Beef Industry, Basu Deb Bhandari
Three Essays On Economic Analysis Of Production Systems Of U.S. Grass-Fed Beef Industry, Basu Deb Bhandari
LSU Doctoral Dissertations
This dissertation research consists of three essays. The first two studies analyze experimental research data based on three pasture systems for grass-fed beef (GFB) production in the Gulf Coast Region. System 1 included bermudagrass and ryegrass; System 2 included bermudagrass, ryegrass, rye, dallisgrass, and clover mixtures (red, white, and berseem clovers); and System 3 included bermudagrass, soybean, sorghum sudan hybrid, ryegrass, rye, dallisgrass, and clover mixtures (red, white, and berseem clovers). Fifty-four Fall-born steers were weaned in May and grouped into nine groups and randomly blocked into treatments and replicates. Inputs and output data were recorded on a daily basis. …