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Impact Of Foliar Fungicides On Yield And Net Returns In Soybeans, Benjamin L. Spinks
Impact Of Foliar Fungicides On Yield And Net Returns In Soybeans, Benjamin L. Spinks
Theses and Dissertations
Field studies were conducted in 2003, 2004, and 2005 in the Mississippi delta at 12 locations across common production practices to evaluate the impact of 12 single applications of fungicides at the R3 and R5 growth stage on soybean yield, seed quality, and net returns. Averaged across locations, azoxystrobin alone and mixed with other fungicides increased yields 161 to 343 kg/ha compared to the nontreated control. Fungicide applications made at R3-R4 were more efficacious and resulted in larger yield increases than applications made at R5-R6. Plots treated at the R3-R4 growth stage with 0.11kg ai/ha azoxystrobin alone or in combination …
Effects Of Vasoactive Agents On The Mechanical Properties Of Aortic Heart Valve Leaflets, Rebecca Lynn Pounders Mathis
Effects Of Vasoactive Agents On The Mechanical Properties Of Aortic Heart Valve Leaflets, Rebecca Lynn Pounders Mathis
Theses and Dissertations
Heart valve disease is currently one of the leading forms of heart disease. Current literature has shown that endothelin I, angiotension II and 5-HT are vasoactive agents which cause concentration dependent contractions in aortic valve leaflet tissue. This study tested the mechanical properties of leaflets cut in the radial direction after they were exposed to the agents at varied concentrations or for 0.5, 6 or 24 hours. The elastic modulus, ultimate tensile strength and the yield strength were calculated. In the time trials the elastic modulus and the ultimate tensile strength both showed a significant increase at 24-hours. However, there …
Functional Role Of Recombinant Cysteine Protease On Spodoptera Frugiperda Peritrophic Matrix, Srinidi Mohan
Functional Role Of Recombinant Cysteine Protease On Spodoptera Frugiperda Peritrophic Matrix, Srinidi Mohan
Theses and Dissertations
Fall armyworm larvae (FAW), which are serious pests in the southern United States, show retarded growth when they feed on insect-resistant maize inbreds Mp704 and Mp708. These maize genotypes are not only resistant to FAW, but to a number of other lepidopteran pests. In these genotypes, a unique, extracellular, 33-KDa cysteine protease (Mir1-CP) rapidly accumulates in the whorl in response to insect feeding. Initial morphological studies on larvae feeding on resistant maize plants over-expressing the cysteine protease showed severe damage in insect?s first line of defense, the peritrophic matrix (PM). But it is not known whether the cysteine protease has …
Selecting Keyword Search Terms In Computer Forensics Examinations Using Domain Analysis And Modeling, Alfred Christopher Bogen
Selecting Keyword Search Terms In Computer Forensics Examinations Using Domain Analysis And Modeling, Alfred Christopher Bogen
Theses and Dissertations
The motivation for computer forensics research includes the increase in crimes that involve the use of computers, the increasing capacity of digital storage media, a shortage of trained computer forensics technicians, and a lack of computer forensics standard practices. The hypothesis of this dissertation is that domain modeling of the computer forensics case environment can serve as a methodology for selecting keyword search terms and planning forensics examinations. This methodology can increase the quality of forensics examinations without significantly increasing the combined effort of planning and executing keyword searches. The contributions of this dissertation include: ? A computer forensics examination …
Reduction Of Volatile Organic Compounds Emitted During Kiln Drying Of Southern Yellow Pine Lumber, Joseph Martin Dahlen
Reduction Of Volatile Organic Compounds Emitted During Kiln Drying Of Southern Yellow Pine Lumber, Joseph Martin Dahlen
Theses and Dissertations
The objective of the research is to reduce the volatile organic compounds (VOCs) emitted during kiln drying of southern yellow pine (SYP) lumber. Three treatment methods were explored to determine their effect on VOC emissions. The three methods were configured at the air exhaust of a pilot-scale dry kiln. 1) A steel reactor containing copper tubing heated to 100°, 200°, and 240° Celsius was evaluated. Temperature did not statistically affect VOC emissions (p-value = 0.1674). The average reduction of VOCs at 240° C was seven percent. 2) The use of hydrogen peroxide and ultra-violet (UV) light did not reduce VOCs …
Development Of Power Flow With Distributed Generators And Reconfiguration For Restoration Of Unbalanced Distribution Systems, Sarika Khushalani
Development Of Power Flow With Distributed Generators And Reconfiguration For Restoration Of Unbalanced Distribution Systems, Sarika Khushalani
Theses and Dissertations
With the increasing interest in distribution automation, distribution power flow is important for applications like VAR planning, switching, state estimation and especially optimization. Typically, a distribution system originates at a substation and continues to a lower voltage for delivery to the customers. There are several tools for transmission system analysis. These tools include Newton Raphson, Gauss Seidel and fast decoupled techniques. These techniques however sometimes fail to converge when applied to distribution systems due to their higher resistance/reactance (R/X) ratio of the lines, making them ill conditioned. Distribution systems typically have a radial topological structure where the loads are not …
Study Of Lunar Constellations For Situational Awareness And Surveillance, Devon Sanders
Study Of Lunar Constellations For Situational Awareness And Surveillance, Devon Sanders
Theses and Dissertations
Lunar constellations providing the capabilities of situational awareness and surveillance for future mission operators are analyzed in this study. The use of specialty orbits, such as sun-synchronous and frozen orbits, are analyzed to determine the applicability of these unique orbits. Additionally, altitude and inclination trades are performed to determine the degree to which mission objectives are achieved through ranges of these orbital parameters. Using the analyzed orbits, constellations of varying patterns are developed and surface coverage figures of merit are used to evaluate them. The research concludes with calculation of the yearly cross-track and in-track stationkeeping costs of a representative …
Micro-Chp Modeling And Simulation Using Thermodynamic Cycles, Alan Mark Moran
Micro-Chp Modeling And Simulation Using Thermodynamic Cycles, Alan Mark Moran
Theses and Dissertations
This thesis discusses the thermoeconomic modeling and simulation of micro-CHP systems powered by various prime movers. Micro Cooling, Heating, and Power (micro-CHP) is becoming an increasingly important energy option as the demand for electrical power as well as heating and cooling for buildings increases worldwide. Micro-CHP has the potential to increase the total energy efficiency for cooling, heating, and powering residences, offices, and other relatively small buildings by using waste thermal energy from electricity production to deliver heating and cooling. Calculation methodologies are presented for the different components of micro CHP systems using thermodynamic cycles and mass and energy balances. …
Grout Impregnation Of Pre-Placed Recycled Concrete Pavement (Rcp) For Rapid Repair Of Deteriorated Portland Cement Concrete Airfield Pavements, Travis A. Mann
Grout Impregnation Of Pre-Placed Recycled Concrete Pavement (Rcp) For Rapid Repair Of Deteriorated Portland Cement Concrete Airfield Pavements, Travis A. Mann
Theses and Dissertations
The U.S. military must have the ability to rapidly deploy troops and equipment anywhere in the world as part of a contingency operation. Recent military operations have highlighted the critical need for rapid repair procedures and materials for military use on sub-standard, in-theater airfields. The U.S. Army Corps of Engineers, Engineer Research and Development Center is currently addressing these problems through a program titled ?Joint Rapid Airfield Construction?. This study involves the development of a method using rapid setting grouts and recycled concrete pavement (RCP) to repair portland cement concrete (PCC) pavements. A laboratory study was conducted to evaluate material …
Sds-Page And Western Blotting Analyses Of Internalin A In Listeria Monocytogenes And Listeria Spp, Bang-Yuan Chen
Sds-Page And Western Blotting Analyses Of Internalin A In Listeria Monocytogenes And Listeria Spp, Bang-Yuan Chen
Theses and Dissertations
Attachment strength of Listeria spp. and their InlA expression was assessed. Listeria monocytogenes 19111 exhibited the strongest attachment strength with L. monocytogenes 19115, L. grayi, L. innocua, and L. monocytogenes 7644 being the weakest. InlA expression was not detected in silver stained SDS gels but was detected in Western blotting images. Internalin A was only detected in protein extracts of L. monocytogenes 19111 and 7644 with band intensities of 50.1 and 2.5 pixels, respectively. Greater InlA expression was correlated with higher attachment strength in L. monocytogenes 19111. Listeria monocytogenes 19115 did not express InlA but it had a stronger attachment …
Field Emergence Of Horseweed [Conyza Canadensis (L.) Cronq.] And Control Utilizing Tillage And Herbicides, Thomas William Eubank
Field Emergence Of Horseweed [Conyza Canadensis (L.) Cronq.] And Control Utilizing Tillage And Herbicides, Thomas William Eubank
Theses and Dissertations
Horseweed has been documented in 70 countries and 40 different crops around the world and is listed as being a problem weed in no-till production systems. Horseweed has developed resistance to many herbicide modes of action including glycine. Field experiments were conducted from 2004 to 2006 in the Mississippi Delta to evaluate the field emergence of horseweed and most effective treatment programs for its control. Field emergence of horseweed was observed occurring primarily in the fall of the year, September through early November, when temperatures were between 15.6 to 23.4 C with later flushes occurring from late January through early …
French And Spanish In Contact: Code-Switching Among Spanish Immigrants In France, Anna Michalina Debicka-Dyer
French And Spanish In Contact: Code-Switching Among Spanish Immigrants In France, Anna Michalina Debicka-Dyer
Theses and Dissertations
This sociolinguistic study of the bilingual speech of Spanish immigrants in Toulouse, France focuses on the phenomenon of code-switching (CS). The analysis of the data showed that most CS was situational, rather than metaphorical. Three types of CS were found: insertion, alternation, and congruent lexicalization. Their examination revealed that the insertion of French words was more common than of Spanish items, the alternation was most frequent in repetitions, and the congruent lexicalization was present at the grammatical and structural level. The speech of the individual participants was also analyzed, and it was found that the sociological aspects greatly affected the …
Development And Validation Of A Control Strategy For A Parallel Hybrid (Diesel-Electric) Powertrain, Jimmy C. Mathews
Development And Validation Of A Control Strategy For A Parallel Hybrid (Diesel-Electric) Powertrain, Jimmy C. Mathews
Theses and Dissertations
The rise in overall powertrain complexity and the stringent performance requirements of a hybrid electric vehicle (HEV) have elevated the role of its powertrain control strategy to considerable importance. Iterative modeling and simulation form an integral part of the control strategy design process and industry engineers rely on proprietary ?legacy? models to rapidly develop and implement control strategies. However, others must initiate new algorithms and models in order to develop production-capable control systems. This thesis demonstrates the development and validation of a charge-sustaining control algorithm for a through-the-road (TTR) parallel hybrid (diesel-electric) powertrain. Some unique approaches used in powertrain-level control …
Body Mass Index And Percent Body Fat As Determined By Bioelectrical Impedance Analysis In Children, 7-9 Years Of Age, Patrick Alan Grady
Body Mass Index And Percent Body Fat As Determined By Bioelectrical Impedance Analysis In Children, 7-9 Years Of Age, Patrick Alan Grady
Theses and Dissertations
The purpose of this study was to examine the prevalence of overweight and report mean Body Mass Index (BMI) and percent body fat (%BF) in Black and non-Black children, 7-9 years of age. The study involved 172 students divided as follows: 56 (32.6%) Black females, 45 (26.2%) Black males, 34 (19.7%) non-Black females, and 37 (21.5%) non-Black males. Percent body fat (%BF) was determined by bioelectrical impedance analysis (BIA). Body mass index was calculated as weight (kg)/height (m)². Black females had a statistically greater BMI (19.3 ± 4.8) and %BF (25.7 ± 10.6) than all other groups. Prevalence of at-riskor-overweight …
Effectiveness Of Postharvest Sanitation Treatments On Microbial Load Of Blueberries, Wei-Chun Chen
Effectiveness Of Postharvest Sanitation Treatments On Microbial Load Of Blueberries, Wei-Chun Chen
Theses and Dissertations
The purpose of this study was to determine the quality and microbial load of blueberries at different maturity stages, to develop the effective microbial recovery method and to compare sanitation postharvest treatments on microbial counts of blueberries. The soluble solids and the sugar to acid ratio increased, while pH and TA decreased with maturity. Ripe berries had lower yeast and mold counts (YMC) at other maturity stages, but there were no differences on aerobic plate counts (APC). The medium pH was lower for stomaching and blending than hand massaged samples. This leads to higher recovery of microorganisms by massaging. Sodium …
A Bandwidth Estimation Method For Ip Version 6 Networks, Marshall Crocker
A Bandwidth Estimation Method For Ip Version 6 Networks, Marshall Crocker
Theses and Dissertations
Efficiently and accurately estimating bandwidths in packet networks is a problem that has intrigued researchers for years. There is no simple manner for estimating bandwidths in IPv4 networks that is accurate, efficient, flexible, and suitable for a variety of applications. Many of the available estimation techniques suffer from inherent flaws such as inaccuracy due to simple assumptions about the network or an overall high complexity that makes it inappropriate in all but a few highly specific situations. The next generation Internet Protocol, IP version 6, has the functionality necessary to implement feedback mechanisms to assist in accurate bandwidth estimations. This …
Hyperspectral Dimensionality Reduction Via Sequential Parametric Projection Pursuits For Automated Invasive Species Target Recognition, Terrance Roshad West
Hyperspectral Dimensionality Reduction Via Sequential Parametric Projection Pursuits For Automated Invasive Species Target Recognition, Terrance Roshad West
Theses and Dissertations
This thesis investigates the use of sequential parametric projection pursuits (SPPP) for hyperspectral dimensionality reduction and invasive species target recognition. The SPPP method is implemented in a top-down fashion, where hyperspectral bands are used to form an increasing number of smaller groups, with each group being projected onto a subspace of dimensionality one. Both supervised and unsupervised potential projections are investigated for their use in the SPPP method. Fisher?s linear discriminant analysis (LDA) is used as a potential supervised projection. Average, Gaussian-weighted average, and principal component analysis (PCA) are used as potential unsupervised projections. The Bhattacharyya distance is used as …
Single-Step Treatment Of 2,4-Dinitrotoluene Via Zero-Valent Metal Reduction And Chemical Oxidation, J. Mathew Thomas
Single-Step Treatment Of 2,4-Dinitrotoluene Via Zero-Valent Metal Reduction And Chemical Oxidation, J. Mathew Thomas
Theses and Dissertations
Many nitroaromatic compounds (NACs) are considered toxic and potential carcinogens. The purpose of this study was to develop an integrated reductive/oxidative process for treating NAC contaminated waters. The process consists of the combination of zero-valent manganese or iron and a hydroxyl radical based treatment technique. Corrosion promoters were added to the contaminated water to minimize passivation of the metallic species. Water contaminated with 2,4-dinitrotoluen (DNT) was treated with the integrated process using a recirculating batch reactor. It was demonstrated that addition of corrosion promoters to the contaminated water enhanced the rate of reaction of 2,4-DNT with zero-valent iron or manganese. …
Study Of Spin-Lattice Relaxation Rates In Solids:Lattice-Frame Method Compared With Quantum Density-Matrix Method, And Glauber Dynamic, Lazarus Solomon
Study Of Spin-Lattice Relaxation Rates In Solids:Lattice-Frame Method Compared With Quantum Density-Matrix Method, And Glauber Dynamic, Lazarus Solomon
Theses and Dissertations
The spin-lattice relaxation rates are calculated for a rigid magnetic spin cluster in an elastic medium in the presence of a magnetic eld using the latticerame method. This rate is then compared with both the rate calculated using the quantum mechanical densitymatrix method and with the Glauber dynamics. These calculation results are used in the contribution of various heat baths, such as a phonon bath in various dimensions or a fermionic bath, to transition rates that enter into dynamic Monte Carlo simulations of molecular magnets and nanomagnets.
Installation And Instrumentation Of A Micro-Chp Demonstration Facility, Nicholas Alexander Stone
Installation And Instrumentation Of A Micro-Chp Demonstration Facility, Nicholas Alexander Stone
Theses and Dissertations
Micro-Cooling, Heating and Power (CHP) is the decentralized generation of electricity in which normally wasted heat is recovered for use in heating and cooling of the space. A micro-CHP demonstration facility is needed to showcase the system and allow for experiments to be performed. This thesis illustrates the steps taken for the installation and instrumentation of a Micro-CHP (Cooling, Heating, and Power) demonstration facility. Equipment sizing was performed by creating an accurate building model and performing a transient building analysis. Temperature, pressure, flow rate, and relative humidity are measured in order to determine accurate energy balances through each piece of …
Measures Of Oxidation Of Soybean And Catfish Oils, John Michael Mcgillivray
Measures Of Oxidation Of Soybean And Catfish Oils, John Michael Mcgillivray
Theses and Dissertations
Oils from soybeans and catfish by-products were extracted using hexane, propane, and supercritical carbon dioxide (SCCO2). Free fatty acids (FFA), peroxide values (PV), anisidine values (AnV), total oxidation (TOTOX), induction point (IP), iodine values (IV), and 2-thiobarbituric acid reactive substance (TBARS) were all measured to analyze oxidation of these oils. The extraction yield of propane, hexane, and SCCO2 oils was 80.4, 94.5, and 90%, in respect to total lipid content. Oils extracted with SCCO2 were more oxidized than those extracted with propane and hexane; probably due to the higher temperature and longer extraction time. The IP correlated with AnV, IV, …
The Chemical And Mechanical Effects Of Binding Chitosan To Implant Quality Titanium, Holly Joy Martin
The Chemical And Mechanical Effects Of Binding Chitosan To Implant Quality Titanium, Holly Joy Martin
Theses and Dissertations
Biomedical implants are commonly made from commercially pure titanium and other metal alloys, which are chosen for their strength and density. To improve the stability and promote bone cell growth into the implant, efforts to bond coatings to metal have been extensively studied. Many coatings used are considered bioactive, which promote the adhesion and growth of the bone cells surrounding the implant [A.1]. Of these, the most commonly investigated coating is a ceramic called hydroxyapatite, which is brittle, leading to flaking and inadequate bone cell growth [A.2]. Alternate bioactive coatings are being examined, including chitosan, the deacetylated form of chitin. …
Rans And Hybrid Rans/Les Computations For Three-Dimensional Wings With Ice Accretion, Mithun Varma Mankada Covilakom
Rans And Hybrid Rans/Les Computations For Three-Dimensional Wings With Ice Accretion, Mithun Varma Mankada Covilakom
Theses and Dissertations
Computational investigations were carried out to evaluate the effectiveness and usability of hybrid RANS/LES techniques for predicting the unsteady separated flow over wings with ice accretion. RANS and hybrid RANS/LES computations were performed using the viscous flow solver CHEM with the SST turbulence model. Two configurations were considered during the study: an extruded wing with a glaze-ice shape and a swept wing with a simulated glaze-ice accretion. Hybrid RANS/LES results, in general, predict a less active shear layer ``roll up' than seen in the experimental data. Qualitative improvements are seen in the hybrid RANS/LES results over corresponding RANS results. The …
Real-Time Vehicle Performance Monitoring With Data Integrity, William George Jenkins
Real-Time Vehicle Performance Monitoring With Data Integrity, William George Jenkins
Theses and Dissertations
A cornerstone of next generation intelligent transportation systems (ITS) is a seamless integration of in-vehicle networking with existing wireless telephony infrastructure. Remote access to on-board diagnostics and performance data is a crucial requirement for ITS. This thesis investigated the performance benefits of a data integrity buffering technique for an extensible vehicle position and performance tracking system (VPPTS). In support of this investigation, a VPPTS prototype was developed. The prototype used available technologies and interfaces to industry-standard communications channels and is a demonstration of a next-generation intelligent transportation system (ITS). The data integrity buffering technique under investigation was shown to provide …
Recreational Incidents Liability Insurance And Judicial Interpretation For Fee Access Activities On Nonindustrial Private Forest Lands In Mississippi, Sangita Pokharel
Recreational Incidents Liability Insurance And Judicial Interpretation For Fee Access Activities On Nonindustrial Private Forest Lands In Mississippi, Sangita Pokharel
Theses and Dissertations
Private landowners refrain to open their land for recreational users in the fear of potential liability. This study covered the extent of liability, actual bodily injuries and property damages sustained by hunters and anglers in Mississippi. In order to aid for comparison, the study was divided in two sections. First it examined the risk and liability in fee access recreation through the review of court cases from 1904 to 2005. Second study explored the extent of actual bodily injuries and property damages sustained by hunters and anglers in Mississippi during 2002/03 to 2004/05 using telephone survey. It was found that …
The Relationship Between School-Based Technology Facilitators, Technology Usage, And Teacher Technology Skill Levels In K-12 Schools In The Create For Mississippi Project, Sean Michael Owen
The Relationship Between School-Based Technology Facilitators, Technology Usage, And Teacher Technology Skill Levels In K-12 Schools In The Create For Mississippi Project, Sean Michael Owen
Theses and Dissertations
The purpose of this study was to explore the relationship between on-site Technology Facilitators, access to technology, technology usage, and technology skill levels of teachers at the eleven C?R?E?A?T?E for Mississippi Partner Schools in the 2003-2004 school year. Four hundred eighteen certified teachers, seven Technology Facilitators, and two Technology Aides participated in the C?R?E?A?T?E for Mississippi project in this time frame in the Partner Schools. Mean difference scores relative to teachers? beginner technology skills and advanced technology skills showed greater gains in Partner Schools that had some level of on-site support than Partner Schools that did not have on-site support. …
The Use Of Dietary Fat Supplementation On Growth, Reproduction And Performance Characteristics Of Replacement Beef Heifers, Alecsandro Rufino Dos Santos
The Use Of Dietary Fat Supplementation On Growth, Reproduction And Performance Characteristics Of Replacement Beef Heifers, Alecsandro Rufino Dos Santos
Theses and Dissertations
The purpose of these studies was to evaluate the effects of a dietary fat supplementation on growth, reproduction and performance characteristics of replacement beef heifers reared in different management systems (pasture and dry lot conditions). The objectives were (1) to quantify changes in body composition traits and growth performance of replacement beef heifers fed different levels of fat in the supplemented diet,(2) to determine the reproductive performance of heifers supplemented with dietary fat in either a ryegrass pasture system or a dry lot system, and (3) to determine the value of real-time ultrasound technology (RTU) as an alternative technology to …
When Brand Extensions Backfire: Exploring The Reciprocal Effect Of Negative Information Of Brand Extensions On Parent Brand, Lin Zhang
Theses and Dissertations
Brand equity has been highlighted as one of the most valuable assets one company possesses. However, negative information related with brand extension, such as brand extension failures, can lead to negative perceptions, which may be difficult to reverse. Therefore, it is of critical interest to managers and academicians to have better understanding of the effect of brand extension on the parent brand, especially its negative effect. In this research, the focus is to investigate the feedback effect of negative information of brand extension on the parent brand. This dissertation focuses on how negative information of brand extension impacts the parent …
An Energy Efficient Data Cache Implementing 2-Way Lrc Architecture, Saibhushan Musalappa
An Energy Efficient Data Cache Implementing 2-Way Lrc Architecture, Saibhushan Musalappa
Theses and Dissertations
Conventional level one data caches are widely used in high-performance microprocessors. Shrinking process parameters in chip fabrication technology allow a much larger number of devices on a chip with every new generation. This reduction in device size has led to an increase in the magnitude of a type of energy dissipation hitherto ignored?leakage energy. Transistor level leakage energy research for sub-micron processes has shown that leakage can be as much as or greater than the dynamic energy for advanced circuit designs. Researchers have devised techniques to reduce leakage energy at the fabrication and circuit levels. Transitioning the idle circuits from …
The Influence Of Instructional Coaches On Improving Teaching And Student Performance, Mariella Hodges Simons
The Influence Of Instructional Coaches On Improving Teaching And Student Performance, Mariella Hodges Simons
Theses and Dissertations
Instructional coaching is emerging as a job-embedded professional development tool for schools to utilize in an effort to improve teaching practice and student achievement. Since there is a lack of understanding of the differing roles served by instructional coaches in schools and the functions they perform that influence teacher utilization of best practice procedures in teaching, this study concentrated on giving voice to teachers and administrators regarding their concerns and changes in teaching behavior. By listening to the assertions of educators employed within the schools housing an instructional coach, it is possible to gain an in-depth understanding of how the …