Open Access. Powered by Scholars. Published by Universities.®

Life Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

Articles 1 - 30 of 59

Full-Text Articles in Life Sciences

Instrument Assisted Soft Tissue Mobilization: Effect On Strength And Range Of Motion, John Frederick Burnside Jan 2004

Instrument Assisted Soft Tissue Mobilization: Effect On Strength And Range Of Motion, John Frederick Burnside

LSU Master's Theses

OBJECTIVE: The purpose of this study is to determine strength changes in the knee measured throughout full range of motion following Instrument Assisted Soft Tissue Mobilization. METHODS: 13 subjects underwent pre-screening for existing soft tissue lesions. Subjects performed multiple angle isometric strength testing at the knee (15°, 45°, 60°, 90°, 115° of knee flexion) prior to beginning a 4-week resistance training protocol. Subjects performed knee extension/flexion exercises (2x15) 3 times a week for 4 weeks. Following the training period, subjects were post tested using the same protocol as used in the pre-test. DATA ANALYSIS: A paired sample t-test was ...


Cryopreservation Of Bovine And Caprine Oocytes By Vitrification, Sabrina Marie Luster Jan 2004

Cryopreservation Of Bovine And Caprine Oocytes By Vitrification, Sabrina Marie Luster

LSU Master's Theses

Cryopreservation of animal oocytes will permit germplasm of valuable or unique females to be preserved for extended times. The objective of this research was to derive a procedure to cryopreserve bovine oocytes by vitrification to be used as recipients for somatic cell nuclear transfer (SCNT). Caprine oocytes vitrified by the same procedure were assayed by cytological examination of microtubules. In the first two of three experiments, bovine oocytes matured in vitro were vitrified in a mixture of ethylene glycol (EG), dimethylsulfoxide (Me2SO) and trehalose, and then subjected to in vitro fertilization (IVF) or SCNT. For vitrification, oocytes were first exposed ...


The Effect Of Beta-Carotene Vitamin E, And Vitamin C Supplementation Upon Work Capacity During A Protocol Of Arm Curl Exercise Using The Biodex Dyanamometer, Ivan Kenyon Guillory Jan 2004

The Effect Of Beta-Carotene Vitamin E, And Vitamin C Supplementation Upon Work Capacity During A Protocol Of Arm Curl Exercise Using The Biodex Dyanamometer, Ivan Kenyon Guillory

LSU Doctoral Dissertations

The effect of acute and chronic supplementation upon work capacity in trained and untrained subjects was examined using 10 normal healthy subjects (ages 19-23). The subjects were tested using a double-blind crossover design. During the two supplemental stages subjects ingested either the placebo or antioxidant mixture capsules (beta-carotene, vitamin C, vitamin E). There was a 28 day washout period between the two supplemental stages. Subjects were tested during each stage for an acute effect (one day of supplementation) and chronic effect (twenty-eight days of supplementation). Testing consisted of seven sets of arm curl exercises with a 60-second rest period between ...


Integration Of Management Tactics For The Rice Water Weevil Lissorhoptrus Oryzophilus Kuschel With Particular Emphasis On Use Of Plant Resistance (Tolerance), Li Zou Jan 2004

Integration Of Management Tactics For The Rice Water Weevil Lissorhoptrus Oryzophilus Kuschel With Particular Emphasis On Use Of Plant Resistance (Tolerance), Li Zou

LSU Doctoral Dissertations

Studies were conducted to test the hypothesis, significant benefits can be achieved for the management of rice water weevil, Lissorhoptrus oryzophilus Kuschel, by the use of rice varieties with low levels of host plant resistance coupled with the judicious use of cultural practices and insecticides. Tolerant traits of a current commercial variety of rice, "Bengal", was manifested consistently over multiple years. Study on rice growth as effected by weevil injury showed that pruning of root systems by larvae of weevil resulted in a decrease in tiller number and shoot biomass of rice plants in the vegetative stage of growth. Yield ...


Preservation Of Sperm Harvested From The Rat, Caprine, Equine, And Bovine Epididymis, Aida Nioma James Jan 2004

Preservation Of Sperm Harvested From The Rat, Caprine, Equine, And Bovine Epididymis, Aida Nioma James

LSU Doctoral Dissertations

The interest in preserving endangered species has increased the amount of attention lent to the recovery of functional sperm from the epididymides of deceased males (Foote, 2000). Postmortem specimens have a finite time period before decomposition affects functionality. Determination of this “window of opportunity” to harvest and preserve epididymal sperm would be beneficial for further research in sperm preservation and assisted reproductive technologies. The objective of these studies was to determine 1) the “window of opportunity” to collect viable rat, caprine, equine and bovine epididymal sperm, 2) if epididymal sperm collected could be cryopreserved, 3) to test two common cryoprotectants ...


Evaluating International Agricultural Trade In Central America: Three Analyses, Jose Roberto Andino Jan 2004

Evaluating International Agricultural Trade In Central America: Three Analyses, Jose Roberto Andino

LSU Doctoral Dissertations

A case study framework was used to study the competitiveness of Honduran coffee with major importing partners, along with an import demand analysis. Several important points summarize the findings. First, trends in green coffee supply and consumption continue to depress world coffee prices, making the production of coffee less attractive. Since small coffee producing countries, like Honduras, cannot affect the international price, they must improve efficiency, productivity, employ cost reduction techniques, and rely on the promotion of specific product attributes to remain competitive. Second, increased market share of Honduran coffee in major importing markets, Germany, Japan, and the U.S ...


An Economic Evaluation Of Using Management Zones In Cotton Production, Jose Antonio Cabrera-Davila Jan 2004

An Economic Evaluation Of Using Management Zones In Cotton Production, Jose Antonio Cabrera-Davila

LSU Master's Theses

This thesis examines the use of Precision Agriculture technologies to define Management Zones within a multicrop production system. It further evaluates the economic feasibility of implementing spatially variable insecticide applications against conventional blanket treatments with respect to insect pest management in cotton production. The use of geographical information systems was critical in the development of the different yield maps established to determine the level of consistency of management zones across crops over time. Several important concepts, such as data normalization, yield grid maps, inverse distance weighted and stability, were introduced throughout this research to: set the scale of measures to ...


The Effectiveness Of Videotape Feedback In Sport: Examining Cognitions In A Self-Controlled Learning Environment, Justin Menickelli Jan 2004

The Effectiveness Of Videotape Feedback In Sport: Examining Cognitions In A Self-Controlled Learning Environment, Justin Menickelli

LSU Doctoral Dissertations

Providing videotape feedback (VTFB) as a form of knowledge of performance (KP) to learners is a common instructional tool in teaching and coaching. VTFB has attracted renewed attention and various “laundry lists” of recommendations (e.g., provide VTFB immediately following performance, use frequently, vary camera angles) on VTFB implementation (e.g., Franks & Maile, 1991; Trinity & Annesi, 1996). Furthermore, researchers have begun exploring the cognitive variables which serve to mediate the impact of VTFB (e.g., Hebert, Landin, & Menickelli, 1998; Menickelli, Landin, Grisham, & Hebert, 2000). Recent research has focused on two key issues: VTFB provided in a self-controlled learning environment and learner’s cognitions during VTFB exposure. This purpose of this study was to investigate the unique contributions of four augmented feedback modalities on learning a multiple ...


Bees Associated With Louisiana Longleaf Pine Savannas, Chanda Sara Bartholomew Jan 2004

Bees Associated With Louisiana Longleaf Pine Savannas, Chanda Sara Bartholomew

LSU Master's Theses

Longleaf pine savannas are perhaps the most threatened ecosystems in North America. Despite a well documented and highly diverse flora, little has been published on insects in general and, in particular, on bees that provide the valuable service of plant pollination. Thus, the aims of this study were to: 1) survey bees found in two savanna types in southeastern Louisiana; and 2) contrast the diversity and species composition of these two savanna types. An ancillary goal was to contrast two collecting protocols for bees in the savanna habitat. Overall, a total of 3,407 bees were collected representing 125 species ...


Hemodynamic Responses Following Dynamic Resistance Exercise In Young And Older Adult Women, Rafael Antonio Reyes Jan 2004

Hemodynamic Responses Following Dynamic Resistance Exercise In Young And Older Adult Women, Rafael Antonio Reyes

LSU Doctoral Dissertations

This investigation examined the effects of age, exercise and test condition on hemodynamic variables, autonomic and vascular function in relation to resistance exercise (RE). The associations among these variables were also examined. METHODS: Sixteen young (21.4+1.4 yrs) and 16 older (69.7+3.9 yrs) women performed 5- and 15- repetition maximal (RM) of knee extension RE. Continuous blood pressure (BP) and electrocardiography (ECG) data were recorded. The dependent variables are reported at pre-exercise, peak exercise and recovery period. Heart rate variability data were derived from 5- and 10-min segments before and after exercise. Resting and after ...


Bakso (Traditional Indonesian Meatball) Properties With Postmortem Condition And Frozen Storage, Dino Rahardiyan Jan 2004

Bakso (Traditional Indonesian Meatball) Properties With Postmortem Condition And Frozen Storage, Dino Rahardiyan

LSU Master's Theses

Bakso is a finely comminuted boiled Indonesian meat product that is traditionally made of starch, salt and emulsified prerigor or early postmortem meat and often sold from street vendors. Recently processors have begun to commercially manufacture bakso. This research was conducted to investigate the substitution of early postmortem meat with postrigor meat to allow more efficient manufacturing and raw material procurement. The first experiment was to determine the properties of bakso with three tapioca starch concentrations added to early or late postmortem beef. No differences (p<0.05) were observed in bakso properties of composition and texture, though bakso made of post-rigor meat had slightly less elasticity, strength and shear. These disadvantages were compensated by incorporating 15% starch concentration, indicating that the replacement of early postmortem meat with postrigor meat was applicable in industrial mass production of bakso. The second phase of experiments was to investigate the properties of bakso with different frozen storage times of raw postrigor meat and after different times of frozen storage for bakso made from postrigor and early postmortem meat. Postrigor meat substitution for early postmortem meat in bakso with 15% tapioca starch resulted in minimum composition and textural differences (p>0.05). Meat stored frozen for 2 and 4 months was still suitable as ...


Mineral Utilization In Poultry As Affected By Virginiamycin Or Mineral Source, Tanika Ivel O'Connor-Dennie Jan 2004

Mineral Utilization In Poultry As Affected By Virginiamycin Or Mineral Source, Tanika Ivel O'Connor-Dennie

LSU Master's Theses

Four experiments were conducted to evaluate the effects of diets with reduced Ca or nonphytate P (nPP) levels with supplemental virginiamycin (Vm) on growth performance and bone response variables in chicks. All diets were corn-soybean meal based and all treatments were replicated six or eight times with five or six chicks each. Reducing dietary nPP from 0.45 to 0.15, 0.25, or 0.35% decreased most growth and bone response variables. The addition of Vm to diets containing 0.35% nPP and above increased both growth and bone response variables. The addition of Vm to diets containing 0 ...


Cercospora Leaf Blight Of Soybean: Pathogen Vegetative Compatibility Groups, Population Structure, And Host Resistance, Guohong Cai Jan 2004

Cercospora Leaf Blight Of Soybean: Pathogen Vegetative Compatibility Groups, Population Structure, And Host Resistance, Guohong Cai

LSU Doctoral Dissertations

Nitrogen nonutilizing mutants were used to assess vegetative compatibility of 58 isolates of Cercospora kikuchii, 55 of which were isolated from soybean plants in Louisiana. Only 16 of 56 self-compatible isolates were assigned to six multi-member vegetative compatibility groups (VCGs), 01-06, with two or three isolates in each VCG. The other 40 isolates were not vegetatively compatible with any isolates other than themselves. All six multi-member VCGs contained isolates from different soybean cultivars, and three included isolates from different locations. Only one VCG included isolates both from soybean leaves and from seeds, while two and three multi-member VCGs included isolates ...


Seasonal Occurrence Of Phyllophaga Species And Biological Studies Of Phyllophage Ephilida (Say) On Sweet Potato, Ipomoea Batatas (L) Lam, In Louisiana, Aboubacar Diagne Jan 2004

Seasonal Occurrence Of Phyllophaga Species And Biological Studies Of Phyllophage Ephilida (Say) On Sweet Potato, Ipomoea Batatas (L) Lam, In Louisiana, Aboubacar Diagne

LSU Doctoral Dissertations

The biology of Phyllophaga ephilida (Say) was studied in Louisiana with both laboratory and field experiments from 1998 through 2003. The seasonal occurrence of common adult Phyllophaga species in sweet potato growing areas was surveyed with blacklight traps. P. ephilida and P. crinita (Burmeister) were the most common species at all locations. The attractiveness of seven methyl esters of L-isoleucine and L-valine blends to P. ephilida males was evaluated in sweet potato fields in 1999 and 2000. The 100% methyl ester of L-isoleucine was significantly more attractive than all other blend ratios that were tested. The life cycle of P ...


The Use Of Altrenogest To Control Reproductive Function In Beef Cattle, Clarence Edward Ferguson Jan 2004

The Use Of Altrenogest To Control Reproductive Function In Beef Cattle, Clarence Edward Ferguson

LSU Doctoral Dissertations

There has been great controversy involving progesterone (P4) levels during early pregnancy in cattle. The objectives of these experiments were to determine the effect of an early low dose administration of P4 or altrenogest (ALT) on pregnancy rates in repeat breeder (RPB) females, if an increase in pregnancy rates could result from a direct effect of P4 on the embryo and if ALT could support pregnancy in the absence of a functional CL. Firstly, ALT was evaluated for use as a progestin in cattle by synchronizing estrus in beef heifers. There were no differences in the number ...


The Potential Impact Of Trade Policy Changes On Caribbean Sugar, Delroy Anthony Armstrong Jan 2004

The Potential Impact Of Trade Policy Changes On Caribbean Sugar, Delroy Anthony Armstrong

LSU Master's Theses

This study of the Caribbean Sugar Industry summarizes its sugar trading activities and evaluates the potential impact of changes in preferential trading arrangements with the European Union (EU) on the six countries that makes up the Sugar Association of the Caribbean, namely: Jamaica, Barbados, Belize, Guyana, St. Kitts-Nevis, and Trinidad & Tobago. The trading policies that govern sugar trade between these countries and developed countries such as the EU, the United States of America (US) and to a limited extent trade among them is discussed. The report briefly describes how the Caribbean sugar industry is organized, including supply and demand determinants ...


Consumer Sensory Characteristics Of Butter Cake Made From Wheat And Rice Flours, Ashley Elizabeth Bond Jan 2004

Consumer Sensory Characteristics Of Butter Cake Made From Wheat And Rice Flours, Ashley Elizabeth Bond

LSU Master's Theses

Rice is an important commodity in Louisiana and throughout the world. During the milling process, about 15% of rice kernels become broken. Louisiana produced approximately 2,011,000 hundred weights of broken rice kernels in 2002. Converting broken rice into rice-based products adds dollars back to broken rice. The market potential for rice in processed foods is huge. In the refrigerated and frozen baked foods category, it is approximately $14.3 billion; while in the baked snack foods and wholesale bakery foods category, it is approximately $31.4 billion. Approximately 1-2% of the United States population suffers from Celiac Spruce ...


Species Diversity And Biogeography Of Ants (Hymenoptera: Formicidae) In Louisiana With Notes On Their Ecology, Shawn T. Dash Jan 2004

Species Diversity And Biogeography Of Ants (Hymenoptera: Formicidae) In Louisiana With Notes On Their Ecology, Shawn T. Dash

LSU Master's Theses

Over three decades have passed since the completion of Moser and Blum's (1960) treatment of the ants of Louisiana. This research represents a significant contribution to and update of their work. I report the first-ever comprehensive assessment of the Louisiana Formicid fauna. More than 100 species from 38 genera and eight subfamilies are covered. This faunistic survey gives valuable data of biodiversity and macro/microhabitat selection of ant species. Included are keys to all subfamilies, genera, and species with illustrations photographs, and a regional map for each species.


Development Of Chicken Polyclonal And Mouse Monoclonal-Based Enyzyme Immunoassays For The Detection Of Β-Cyclocitral In Catfish Pond Water, Cate Nakaweesa Munene Jan 2004

Development Of Chicken Polyclonal And Mouse Monoclonal-Based Enyzyme Immunoassays For The Detection Of Β-Cyclocitral In Catfish Pond Water, Cate Nakaweesa Munene

LSU Doctoral Dissertations

The Catfish industry faces a problem of off-flavors due to odorous compounds produced by cyanobacteria and blue-green algae. Beta-Cyclocitral imparts a hay-woody odor to pond water and fish tissues. At present there are no reliable pond treatment methods available to control these off-flavors. To monitor the levels of this compound for quality control, rapid, sensitive and inexpensive methods are needed. The major goal of this study was to develop enzyme-linked immunoflow assays based on monoclonal and polyclonal antibodies that are specific and sensitive enough to detect beta-cyclocitral in catfish pond water. Beta-Cyclocitral-PPD conjugate was prepared and used to immunize two ...


The Effect Of Holding Bovine Oocytes In Follicular Fluid On Subsequent Fertilization And Embryonic Development, Angela Marie Klumpp Jan 2004

The Effect Of Holding Bovine Oocytes In Follicular Fluid On Subsequent Fertilization And Embryonic Development, Angela Marie Klumpp

LSU Master's Theses

The objective of Experiment 1 was to determine the effect of bovine follicular fluid (bFF) on nuclear maturation. Treatment A (Control) oocytes were stained with Hoechst-33342 immediately after aspiration from follicles, whereas, oocytes in Treatment B were held in bFF for 12 hours at 38¢ªC and then stained to determine nuclear status. No significant difference was detected between treatment groups. Results indicate that bFF inhibits resumption of meiosis. The objective of Experiment 2 was to determine the effect of bFF on embryonic development. Oocytes in Treatment A (Control) were placed into in vitro maturation (IVM) for 22 hours followed ...


Effects Of Dietary Protein Level And Fish Meal On Growth And Hormonal Status Of Weaned Dairy Calves, Patricia Terrell Richardel Jan 2004

Effects Of Dietary Protein Level And Fish Meal On Growth And Hormonal Status Of Weaned Dairy Calves, Patricia Terrell Richardel

LSU Master's Theses

Eight weaned Holstein steers approximately 4 mo of age (mean BW = 119.47 ± 2.65 kg) were used in a replicated 4 x 4 Latin square designed experiment to study the effects of protein source and level on performance and anabolic hormonal status of weaned dairy calves. Treatments consisted of two diets containing either 16 or 20 % crude protein (CP) with or without fish meal (FM). Experimental diets were corn silage based with soybean meal (SBM) as the source of ruminal degradable protein and FM as the source of ruminal undegradable protein. The animals were fed their respective diets twice ...


Effects Of Aerobic And Anaerobic Training Protocols On 4000m Track Cycling Time Trial, William Mathieu Cheramie Jan 2004

Effects Of Aerobic And Anaerobic Training Protocols On 4000m Track Cycling Time Trial, William Mathieu Cheramie

LSU Master's Theses

The aim of this study was to determine whether performance in a 4000m individual pursuit could be significantly influenced by training protocols that are solely based in either aerobic/distance training, or anaerobic/sprint training. Faina et al., (1989) and Neuman et al. (1992) have found, using professional track cyclist that there appears to be a split in energy pathways used to perform the event. Their results indicate that 20% of the workload is achieved via anaerobic metabolism and the remaining 80% are achieved through aerobic metabolism. Group #1, followed a training protocol modeled after repeated, short duration, (<1:30.00s/1000m), high intensity sprinting. This particular training protocol may serve to utilize a greater proportion of its allotted time by generating beneficial metabolic adaptations that may possibly improve the subjects performance in the 4000m individual pursuit. Group #2, trained primarily through aerobic means, followed the "more traditional" training method for such an event. This protocol consisted of cycling intervals of distances proportionally longer (>4000m) than ...


A New Broad Spectrum Disinfectant Suitable For The Food Industry, Giovanna Aita Dequeiroz Jan 2004

A New Broad Spectrum Disinfectant Suitable For The Food Industry, Giovanna Aita Dequeiroz

LSU Doctoral Dissertations

A unique biocide composition (patent pending) that is formed from a hydrogen peroxide and sodium hypochlorite mixture was investigated. A biocidal "complex" is formed by adding the peroxide to the hypochlorite in an amount so that the weight ratio of the peroxide to the hypochlorite is no less than 1:10. The chemical structure of this biocidal "complex" is uncertain but we postulate that it is a semi-stable complex, whose stability is disrupted by heat, acid, U/V exposure and the presence of organic matter (i.e., microbes) The antimicrobial activity of the biocidal "complex" is most likely a combination ...


Insect Pest Management Approaches Among Currently Recommended Sugarcane Varieties In Louisiana, Frederick R. Posey Jan 2004

Insect Pest Management Approaches Among Currently Recommended Sugarcane Varieties In Louisiana, Frederick R. Posey

LSU Master's Theses

The sugarcane borer, Diatraea saccharalis (F.), (Lepidoptera: Crambidae), is responsible for more than 90% of the total insect damage to sugarcane in Louisiana. The decision to apply insecticides is complex and influenced by numerous variables. Included among these variables are insect infestation levels, varieties, weather conditions, production input levels, and environmental concerns. Predicting damage that may result from infestations occurring at a particular time of the crop production season is also important. The objective of this research was to evaluate the impact of these variables on sugarcane borer populations and subsequent yield loss. Results from a two-year survey indicated a ...


Faunal Succession Of Necrophilous Insects Associated With High-Pofile Wildlife Carcasses In Louisiana, Erin Jean Grindley Watson Jan 2004

Faunal Succession Of Necrophilous Insects Associated With High-Pofile Wildlife Carcasses In Louisiana, Erin Jean Grindley Watson

LSU Doctoral Dissertations

The same entomological criteria used in estimating time of death for humans are applicable for deceased wildlife. Necrophilous insects associated with animal carcasses can provide wildlife law enforcement with valuable information necessary for postmortem interval estimation, and ultimately, to incriminate poachers. The purpose of this research was twofold: to establish species composition, faunal succession patterns, and species and life stage interactions of necrophilous insects associated with three wildlife species; and to identify new methods of evaluating succession patterns using statistical measures. Twenty-one large vertebrate carcasses were monitored throughout decomposition in a mixed flatwood forest in East Baton Rouge Parish, LA ...


Biology And Host Finding Of Predaceous Hister Beetles (Coleoptera: Histeridae) Associated With Ips Spp. (Coleoptera: Scolytidae) In Loblolly Pine (Pinus Taeda L.), William Pinson Shepherd Jan 2004

Biology And Host Finding Of Predaceous Hister Beetles (Coleoptera: Histeridae) Associated With Ips Spp. (Coleoptera: Scolytidae) In Loblolly Pine (Pinus Taeda L.), William Pinson Shepherd

LSU Doctoral Dissertations

The most common predaceous Histeridae (Coleoptera) found associated with Ips engraver beetles (Coleoptera: Scolytidae) in Louisiana were Platysoma attenuata LeConte, Pla. cylindrica (Paykull), Pla. parallelum (Say), and Plegaderus transversus (Say). Seasonal abundance of histerids in flight traps coincided with Ips spp. activity in the area. Histerid adults arrived at loblolly pine (Pinus taeda L.) logs one wk after Ips attacks had begun. As a group, histerids exhibited a bimodal emergence pattern with the first peak occurring during Ips emergence and a second four wks later, indicating that they fed on bark beetles and associated organisms arriving later in the colonization ...


Evaluation Of Injury And Management Strategies For Stink Bugs (Heteroptera: Pentatomidae) On Cotton, Gossypium Hirsutum L., Melissa Marie Willrich Jan 2004

Evaluation Of Injury And Management Strategies For Stink Bugs (Heteroptera: Pentatomidae) On Cotton, Gossypium Hirsutum L., Melissa Marie Willrich

LSU Doctoral Dissertations

The effects of brown stink bug, Euschistus servus (Say), and southern green stink bug, Nezara viridula (L.), feeding on pre-flowering, flowering, and senescing cotton, Gossypium hirsutum L., plants were evaluated in field studies. Vegetative stage seedlings and flower buds (squares) were not significantly injured by adults or nymphs of either species in no-choice studies. Brown stink bug adults induced boll abscission, and reduced seedcotton yield and seed germination in bolls accumulating „T 350, „T 550, and 101 to „T 600 heat units beyond anthesis, respectively. In free-choice tests, boll preference was evaluated during each of the initial five weeks of ...


Students' Construction Of The Body In Physical Education, Laura Azzarito Jan 2004

Students' Construction Of The Body In Physical Education, Laura Azzarito

LSU Doctoral Dissertations

Recently, physical education researchers have been concerned about the results of national studies reporting young people's low level of participation in physical activity and health problems associated with inactivity. In general girls are less active than boys, and youth from low socioeconomic classes are less active and are more likely be unhealthy than middle or upper class youth. Blacks have the highest risks of health problems and the highest levels of physical inactivity. Among a number of recommendations included in Healthy People 2010, physical education has been identified as a fundamental site for addressing today's challenges. According to ...


Tissue Culture And Transformation Of Introducing Genes Useful For Pest Management In Rice, Shuli Zhang Jan 2004

Tissue Culture And Transformation Of Introducing Genes Useful For Pest Management In Rice, Shuli Zhang

LSU Doctoral Dissertations

Sheath blight (SB), caused by Rhizoctonia solani K¨¹hn, is a major rice disease internationally and in the southern rice area of the Unites States, including Louisiana. Breeders have incorporated partial resistance into commercial rice varieties to control the disease, but a higher level of resistance is needed. It has been demonstrated that the pathogenesis-related (PR) proteins ¦Â-1, 3-glucanase and chitinase are components of effective defense mechanisms for protecting plants against fungal pathogens. This research was conducted to co-transform the ¦Â-1, 3-glucanase, chitinase and bar genes into the rice variety Taipei 309 using the hpt gene for resistance to hygromycin ...


Spatial Econometric Analysis Of Louisiana Rural Real Estate Values, Patricia Soto Jan 2004

Spatial Econometric Analysis Of Louisiana Rural Real Estate Values, Patricia Soto

LSU Doctoral Dissertations

The general purpose of this study was to conduct a spatial analysis of the dynamics of rural land values in Louisiana. Specifically, spatial econometric procedures and hedonic price analysis were used to evaluate the impact of land characteristics on land prices across rural land markets in Louisiana. Initially, hedonic models were estimated by ordinary least squares (OLS) procedures to test for the presence of spatial autocorrelation using Lagrange Multiplier tests. Results suggested that there was spatial autocorrelation in the error terms. Hedonic models were then estimated using maximum likelihood (ML) spatial error techniques. Log likelihood numbers and likelihood ratio tests ...