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Graduate Theses, Dissertations, and Problem Reports (ETD)

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Investigation Of Ecological Behavior Of Two Coccinellidae Beetle Adults For Biological Control, Folukemi Ebunoluwa Adedipe Aug 2009

Investigation Of Ecological Behavior Of Two Coccinellidae Beetle Adults For Biological Control, Folukemi Ebunoluwa Adedipe

Graduate Theses, Dissertations, and Problem Reports (ETD)

The use of natural enemies is an effective strategy to control and suppress pest populations in a given agroecosystem; however farmers are not motivated to adopt this method because of the high cost and temporal unavailability of natural enemies. This thesis reports findings of a series of laboratory experiments carried out to investigate ecological behavioral of two major natural enemies; Harmonia axyridis and Cryptolaemus montrouzieri (Coleoptera: Coccinellidae) Laboratory studies was conducted to determine if H. axyridis could be attracted to companion plants with different olfactory and visual cues, to investigate the within-plant distribution of long-tailed mealybug, Pseudococcus longispinus (Hempitera: Pseudoccoccidae), …

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The Development And Nutritional Characteristics Of An Omega-3-Enhanced Egg Product, Nissan Michelle Kassis Aug 2009

The Development And Nutritional Characteristics Of An Omega-3-Enhanced Egg Product, Nissan Michelle Kassis

Graduate Theses, Dissertations, and Problem Reports (ETD)

Novel, nutritionally-enhanced egg product was developed by substituting saturated fat and cholesterol-containing yolk with omega-3 fatty acids-rich (o-3 FA) flaxseed, menhaden, algae, and krill oils. The o-3 FA-fortified eggs are typically developed through alteration of hen feed. However, the present study aimed at creating such a product via processing. Experimental batters were developed to match composition, color, and texture of hen eggs (whole egg). The batters, whole egg, and liquid egg product (egg beaters) were cooked, analyzed, and compared. Moisture, protein, and fat content of experimental eggs matched (P>0.05) whole egg. Nutritionally, amino acid profile (AAP) analysis showed no …

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Recycling Veneer-Mill Residues Into Engineered Products With Improved Torsional Rigidity, Brad Mcgraw Aug 2009

Recycling Veneer-Mill Residues Into Engineered Products With Improved Torsional Rigidity, Brad Mcgraw

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this research was to recycle veneer-mill residues from underutilized hardwood species into a value-added composite. These residues come from high quality logs and currently, are treated as waste. This study included the development of production methods of this new product. Using standard ASTM testing methods, an assessment into the physical and mechanical properties of the composite was performed.;The intended end use of these panels is as a web material in prefabricated I-joists. Composite I-joists were produced using flanges of structural composite lumber and a corrugated web. The purpose of the corrugated web was to increase the buckling …

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Improvement Of The Physical And Nutritional Quality Of Pelleted Feed, Curran Kenji Gehring Aug 2009

Improvement Of The Physical And Nutritional Quality Of Pelleted Feed, Curran Kenji Gehring

Graduate Theses, Dissertations, and Problem Reports (ETD)

Experiments were conducted to improve the physical and nutritional quality of pelleted feed. One experiment focused specifically on improvement of pellet quality using functional muscle proteins. A second experiment examined the effects of increasing mixer-added fat (MAF) on feed manufacture variables, broiler performance variables and carcass composition. In experiment 1, muscle proteins (myofibrillar and sarcoplasmic) were recovered using isoelectric/solubilization precipitation, and a functional paste (TPP) was formed by mixing recovered proteins with typical surimi additives. Trout protein paste was included in broiler diets at 0, 2.5 or 5%. A tap water treatment (3.9%) was included to match the moisture added …

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The Influence Of Side Vent Length On Instrument Flexural Fatigue Of Three Endodontic Irrigating Needles, Bryant William Stowe Aug 2009

The Influence Of Side Vent Length On Instrument Flexural Fatigue Of Three Endodontic Irrigating Needles, Bryant William Stowe

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this in-vitro study was to compare the influence of the side vent length on flexural fatigue and subsequent failure of three endodontic irrigating needles. Twenty ProRinse Endodontic Irrigation Probes, twenty-three Max-i-Probes, and twenty Vista-Probe Irrigating Tips were used in this study. All three irrigating needles are 30-gauge, have a side-vented port, and are safe-ended. After all side vent lengths were measured and recorded, each needle was subjected to flexing cycles of 30° until flexural fatigue occurred and the instrument permanently failed. Data were analyzed using a one-way ANOVA and Tukey HSD test. Results indicate the Vista-Probe required …

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Adoption Levels Of Integrated Pest Management Among Corn Producers In West Virginia, Hari K. Vommi Aug 2009

Adoption Levels Of Integrated Pest Management Among Corn Producers In West Virginia, Hari K. Vommi

Graduate Theses, Dissertations, and Problem Reports (ETD)

Modernization of agriculture has exponentially increased the use of pesticides in the last six decades. Pesticides were considered to be the only solution to control weeds, insect pests and diseases to enhance and sustain productivity in agriculture. This led to indiscriminate use of pesticides causing severe pollution to air, water, food and fiber. Integrated pest management (IPM) is the use of combinations of several alternative pest control measures to keep the pests under the economic threshold level. The United States Department of Agriculture has promoted the use of integrated pest management for the past three decades with a goal to …

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Perceptions Of The Farmland Preservation Program By West Virginia Farmers, Jamey Allen Murray Aug 2009

Perceptions Of The Farmland Preservation Program By West Virginia Farmers, Jamey Allen Murray

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to determine the perceptions of West Virginia Farmers towards the Farmland Preservation Program. A descriptive research design using a mailed questionnaire was used for this study. The questionnaire was sent to a random sample of 255 farmers enrolled in the Monongahela Soil Conservation District from Marion, Monongalia, and Preston counties, a 36.8% response rate was obtained. This study found that farmers from Monongalia, Preston and Marion counties had a basic understanding of the Farmland Preservation Program and a desire to know more. The majority of the respondents were male and between the ages of …

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Gender Differences In The Impact Of Perceived Social Support On The Relation Between Disability And Depressive Symptoms, Merideth Smith Aug 2009

Gender Differences In The Impact Of Perceived Social Support On The Relation Between Disability And Depressive Symptoms, Merideth Smith

Graduate Theses, Dissertations, and Problem Reports (ETD)

Older adults with functional disabilities are at an increased risk for experiencing depressive symptoms. Studies using cross-sectional analyses have reported that social support mediates the relation between depressive symptoms and functional disability in older adults. Nonetheless, few studies have investigated this model over time. Additionally, the role of gender in this mediation relation has not been explored. This study used latent growth curve modeling to investigate the potential mediating role of perceived social support within the relationship between disability and depression and whether gender moderates that relation. Twins (n = 656) and co-twins (n = 678) from the Swedish Adoption/Twin …

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Synthesis Of Semiconductor Nanoparticles And Characterization Of Physical And Optical Properties, Mikala Shremshock Aug 2009

Synthesis Of Semiconductor Nanoparticles And Characterization Of Physical And Optical Properties, Mikala Shremshock

Graduate Theses, Dissertations, and Problem Reports (ETD)

Nanoparticles are of great interest to a broad scientific community. Because of quantum effects, nanoscale materials exhibit many unique properties that may be exploited for biomedical, defense, and energy applications. Extensive synthetic effort is described for II-VI semiconductor materials. The materials were morphologically confined to zero- or one-dimensional structures. The nanoparticles discussed herein present similar chemical, optical, and physical properties to previously synthesized materials; however, the processes used to obtain these particles are more environmentally benign and use safer chemicals for the researcher and the laboratory environment. These nanomaterials have been extensively characterized to ascertain high quality optical, morphological, and …

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Quantitative Evaluation Of Mining-Induced Changes To Spring Discharge Above A Mine In The Northern Appalachian Coal Field, Joshua M. Silvis Aug 2009

Quantitative Evaluation Of Mining-Induced Changes To Spring Discharge Above A Mine In The Northern Appalachian Coal Field, Joshua M. Silvis

Graduate Theses, Dissertations, and Problem Reports (ETD)

The objectives of this research were to develop methods to discern between naturally occurring reductions in spring discharge from mining-induced reductions to spring discharge, evaluate available hydrologic, geologic, topographic, and mine-specific variables to determine which variables are related to mining-induced spring discharge impairment, and evaluate the variables to determine the seasonality differences or similarities among the variable effects. The study area is at one mine site in the northern Appalachian coal basin.;Overburden thickness of the researched ground water sources above the mined coal bed level range from 135 feet to 550 feet. The overburden geology consists of cyclothemic deposits of …

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The Effects Of Omega-3 Polyunsaturated Fatty Acids On Ampk Activation And Lipid Metabolism In Skeletal Muscle, Myra Ellen Woodworth-Hobbs Aug 2009

The Effects Of Omega-3 Polyunsaturated Fatty Acids On Ampk Activation And Lipid Metabolism In Skeletal Muscle, Myra Ellen Woodworth-Hobbs

Graduate Theses, Dissertations, and Problem Reports (ETD)

Intramyocellular lipid accumulation and low lipid oxidative capacity contribute to the formation of insulin resistance, but omega-3 polyunsaturated fatty acids (n-3 PUFA) are shown to attenuate insulin resistance caused by high levels of saturated fats. The AMP-activated protein kinase (AMPK) promotes lipid oxidation and oxidative gene expression, highlighting its possible role in promoting insulin sensitivity by reducing lipid content and improving oxidative capacity. This study evaluated the effects of n-3 PUFA on the AMPK pathway and alterations to lipid content, oxidative markers, and insulin signaling proteins in a muscle cell culture model, with the hypothesis that n-3 PUFA would attenuate …

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Speech Processing Front-End In Low-Power Hardware, Brandon David Rumberg Aug 2009

Speech Processing Front-End In Low-Power Hardware, Brandon David Rumberg

Graduate Theses, Dissertations, and Problem Reports (ETD)

The objective of this work is to develop analog integrated circuits to serve as low-power auditory front-ends in signal processing systems. An analog front-end can be used for feature-extraction to reduce the requirements of the digital back-end, or to detect and call attention to compelling characteristics of a signal while the back-end is in sleep mode. Such a front-end should be advantageous for speech recognition, noise suppression, auditory scene analysis, hearing prostheses, biological modeling, or hardware-based event detection.;This work presents a spectral decomposition system, which consists of a bandpass filter bank with sub-band magnitude detection. The bandpass filter is low-power …

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Wv Public School Music Teachers' Use Of Digital Audio Technologies For Teaching And Learning, Mark R. Williams Aug 2009

Wv Public School Music Teachers' Use Of Digital Audio Technologies For Teaching And Learning, Mark R. Williams

Graduate Theses, Dissertations, and Problem Reports (ETD)

The wealth of new digital audio technologies, when implemented in classroom music instruction, has the potential to support increased student engagement and enhancement of the musical experience more than in any other time in the 100 year history of public school music education. The purpose of this study was to identify if digital audio technologies are currently being used by WV music teachers, their skill levels, what decisions are made when using the technology, what was the effect on learning, and to gauge whether teaching practices were changed. It is a picture of what teachers are currently doing as well …

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Implementation Of Forest Stewardship Plans: Understanding The Extent Of Forestry Practices Applied On Enrolled Properties In West Virginia, Elizabeth K. Tichner Aug 2009

Implementation Of Forest Stewardship Plans: Understanding The Extent Of Forestry Practices Applied On Enrolled Properties In West Virginia, Elizabeth K. Tichner

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to understand the extent of forest management that is occurring on private forestlands enrolled in the West Virginia Forest Stewardship Program. To quantify the amount of forest management being applied, 295 telephone interviews were conducted in the Fall of 2005 inquiring participants about ten common forest management practices and extent of their implementation, in terms of acreage or mileage. In addition, this study sought to understand the factors associated with the number of respondents that had implemented practices as well as the amount of forestland on which these practices were applied, including practice recommendation, …

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Cooperative Wireless Communications: Protocol Design And Performance Analysis, Kanchan Vardhe Aug 2009

Cooperative Wireless Communications: Protocol Design And Performance Analysis, Kanchan Vardhe

Graduate Theses, Dissertations, and Problem Reports (ETD)

It is well known that multiple antenna wireless communication systems improve the capacity and reliability of wireless communication systems by leveraging spatial diversity. In many wireless applications where it is impractical to implement multiple antennas at the transceivers, cooperation between wireless users wherein single antenna terminals share their resources has been proposed as a viable option to achieve spatial diversity.;The main goal of this research is to characterize the performance bounds for the multiuser, multirelay cooperative communication systems using information theoretic tools and use it to provide guidance in the design of practical systems. The protocols developed in this work …

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A Daily Process Analysis Of Short -Term Physical Activity Goal Pursuits In Midlife: Changes In Goal Processes, Physical Activity, And Subjective Well -Being, Eric A. Goedereis Aug 2009

A Daily Process Analysis Of Short -Term Physical Activity Goal Pursuits In Midlife: Changes In Goal Processes, Physical Activity, And Subjective Well -Being, Eric A. Goedereis

Graduate Theses, Dissertations, and Problem Reports (ETD)

The prevalence of obesity in the United States increases with age, with the highest rates corresponding to midlife. Midlife health behaviors may play a contributing role in many of the health problems commonly associated with advanced age. Health psychologists who have embraced a life-span developmental perspective argue that it is important to consider the individual developmental trajectories of health and successful aging. Goal-setting has been shown to account for significant variance in physical activity, which has a variety of health-promoting benefits. In order to investigate individual variability in the daily processes of physical activity goal pursuit within a sample of …

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The Development Of Technological Management Model: A Conceptualization Of Computer Technology In The Workplace, Paul E. Madlock Aug 2009

The Development Of Technological Management Model: A Conceptualization Of Computer Technology In The Workplace, Paul E. Madlock

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this dissertation was to develop a model that would serve to assist scholars, business professionals, and employees manage the influence of computer technology in the workplace. This study also focused on mandated use environments given the paucity of research in this area. In doing so, Technology Management Model (TMM) was developed. Actor Network Theory (ANT; Callon, 1986; Latour, 1987; Law, 1987) and Social Cognitive Theory (SCT; Bandura, 1986) provided support for the multifactor design of TMM. As a result, TMM was comprised of three latent variables of technological, personal, and organizational factors though to influence the attitudes …

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An Analysis Of Amenity-Led Rural Economic *Development In Northeast Region: A Spatial Simultaneous Equations Approach, Mulugeta Saare Kahsai Aug 2009

An Analysis Of Amenity-Led Rural Economic *Development In Northeast Region: A Spatial Simultaneous Equations Approach, Mulugeta Saare Kahsai

Graduate Theses, Dissertations, and Problem Reports (ETD)

In a matter of just a few decades, the economic landscape of rural America has changed in fundamental ways. Industries once considered the backbone of rural economies have been transformed by globalization and marketing. Others, such as tourism and amenity-based economies or the service sector, have emerged to replace the traditional natural resource and manufacturing-based economies. These changes have invigorated some areas, and forever altered others. Consequently, Interest in an amenity focused development strategy has exploded as policymakers and community leaders realize that most of the jobs lost in recent decades will not return. Instead, these leaders are looking inside …

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Paradoxical Effects Of Shock: The Role Of Shock Intensity And Interresponse Times Followed By Shock, Jessica B. Long Aug 2009

Paradoxical Effects Of Shock: The Role Of Shock Intensity And Interresponse Times Followed By Shock, Jessica B. Long

Graduate Theses, Dissertations, and Problem Reports (ETD)

In operant conditioning experiments concerned with punishment, when electric shock is contingent on an animal's response, response rates typically decrease. In some cases, however, response rates increase. Four experiments investigated these paradoxical effects of shock by manipulating shock intensity and the time between two consecutive responses (interresponse time) that produces shock. Lever pressing by rats was maintained by a variable-interval 40-s schedule of food reinforcement. Shock followed either relatively long (Experiments 1 and 2) or relatively short (Experiments 3 and 4) interresponse times. The range of interresponse times eligible for shock was raised by lowering or raising the interresponse times …

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Syntheses Of Fused Pyrroloheterocycles, Isatins, Approach Towards The Indole Fragment Of Nosiheptide And A Base-Mediated Formation Of 3-Hydroxycarbazoles, Sobha Priyadarshini Gorugantula Aug 2009

Syntheses Of Fused Pyrroloheterocycles, Isatins, Approach Towards The Indole Fragment Of Nosiheptide And A Base-Mediated Formation Of 3-Hydroxycarbazoles, Sobha Priyadarshini Gorugantula

Graduate Theses, Dissertations, and Problem Reports (ETD)

The nitro group has been and still is one of the few functional groups widely studied in synthetic organic chemistry. The reactivity of the nitro group has had important applications in the syntheses of many complex organic molecules, either through its assistance in the formation of new carbon-carbon bonds or in the formation of carbon-heteroatom bonds. Of late, the nitro group has become an important source of nitrogen in organic molecules, thus spawning the syntheses of a range of nitrogen heterocycles.;This dissertation is one such work, wherein the reactivity of the nitro group has been exploited with respect to the …

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Understanding The Expression And Implications Of Deceptive Affectionate Messages, Sean M. Horan Aug 2009

Understanding The Expression And Implications Of Deceptive Affectionate Messages, Sean M. Horan

Graduate Theses, Dissertations, and Problem Reports (ETD)

Affectionate messages are important in romantic relationships as they are linked to multiple emotional, physical, and relational benefits (e.g., Floyd, 2006a). When examining affection, it is important to distinguish that feelings of affection and the communication of affection are two unique processes that theorists argue covary. Yet, deception researchers have found that individuals routinely lie to their non-married romantic partners about their feelings (DePaulo & Kasy, 1998; DePaulo, Kashy, Kirkendol, Wyer, & Epstein, 1996). This dissertation, composed of two studies, examined how individuals in non-married romantic relationships communicated deceptive affection and the implications of such messages. Study one used a …

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Graph Coloring And Flows, Xiaofeng Wang Aug 2009

Graph Coloring And Flows, Xiaofeng Wang

Graduate Theses, Dissertations, and Problem Reports (ETD)

Part 1. The Fulkerson Conjecture states that every cubic bridgeless graph has six perfect matchings such that every edge of the graph is contained in exactly two of these perfect matchings. In this paper, we verify the conjecture for some families of snarks (Goldberg snarks, flower snarks) by using a technical lemma.;Part 2. A star coloring of an undirected graph G is a proper vertex coloring of G such that any path of length 3 in G is not bi-colored. The star chromatic number of a family of graphs G , denoted by chis( G ), is the minimum number …

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Nonlinear Dynamics Modulation In A Neon Glow Discharge Plasma, Paul M. Miller Aug 2009

Nonlinear Dynamics Modulation In A Neon Glow Discharge Plasma, Paul M. Miller

Graduate Theses, Dissertations, and Problem Reports (ETD)

In dynamics modulation, two modes in a driven neon glow discharge alternate as the dominant mode as their response to the driving force alternates between spatiotemporal and temporal periodic pulling. This phenomenon was first noted by Koepke, Weltmann, and Selcher (Bull. Am. Phys. Soc. 40, 1716 (1995)), who saw two limited but representative cases and proposed a mechanism (Phys. Rev. E 62, 2773 (2000)) by which it occurs. The intent of this dissertation is to document experimentally and test the dynamics modulation mechanism they proposed. Using a new extension of a previous mathematical treatment of periodic pulling, the resulting experimental …

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Role Of Endothelin 1 In Follicular And Luteal Function In The Sheep, Fernando P. Perea-Ganchou Aug 2009

Role Of Endothelin 1 In Follicular And Luteal Function In The Sheep, Fernando P. Perea-Ganchou

Graduate Theses, Dissertations, and Problem Reports (ETD)

Three experiments were carried out in order to examine the role of endothelin in follicular steroid secretion in vitro and in spontaneous and PGF2alpha-induced luteolysis in sheep.;In experiment 1, it was hypothesized that endothelin 1 (END1) acting through its receptors ENDRA and/or ENDRB, on granulosal cells of ovine preovulatory follicles would inhibit steroid production, and therefore, prevent the premature luteinization of granulosal cells of those follicles. Data from estrogen-inactive 20 follicles collected from 13 ewes were analyzed. Accumulation of E 2 and P4 by cultured granulosal cells was not affected by either LH or END1 or the END receptor blockers. …

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Agenda Setting And Presidential Power In The United States, Paul E. Rutledge Aug 2009

Agenda Setting And Presidential Power In The United States, Paul E. Rutledge

Graduate Theses, Dissertations, and Problem Reports (ETD)

Richard Neustadt (1960) started a revolution of sorts for future scholars examining the American presidency. It was Neustadt who introduced the notion of a personal president, holding personal power and acting in ways that had implications beyond those powers formally granted to the president in the Constitution. Starting with the presidency of Franklin Roosevelt, the public has looked to the president to be assertive, energetic, and solve problems. Roosevelt offered a New Deal with the American people, and was the first president to really reach into the homes of America. Now the presidency is a public presidency, subjected to very …

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Laboratory Observation Of Evolution Of Iedd-Wave-Modified Equilibrium And Density-Gradient Effects On Smia Wave Propagation, Eric W. Reynolds Aug 2009

Laboratory Observation Of Evolution Of Iedd-Wave-Modified Equilibrium And Density-Gradient Effects On Smia Wave Propagation, Eric W. Reynolds

Graduate Theses, Dissertations, and Problem Reports (ETD)

It was previously found that sheared ion-flow alters the dispersion of waves in plasma [Koepke et al., 1994, 1998a]. Many aspects of sheared ion-flow effects were demonstrated for ion-acoustic waves [Teodorescu et al., 2002a], ion-cyclotron waves [ Teodorescu et al., 2002b; Koepke et al., 1999; Amatucci et al., 1998] and drift waves [Kaneko et al., 2003]. This dissertation further investigates ion-cyclotron waves and ion-acoustic waves in the WVU Q machine plasma in the presence of sheared parallel (magnetic-field aligned) ion-flow and further investigates ion-cyclotron waves in the WVU Q machine plasma in the presence of sheared perpendicular ion-flow.;Experiments were performed …

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The Influence Of Forgiveness And Apology On Cardiovascular Reactivity To Mental Stress, Matthew C. Whited Aug 2009

The Influence Of Forgiveness And Apology On Cardiovascular Reactivity To Mental Stress, Matthew C. Whited

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study sought to investigate the relation between forgiveness and cardiovascular reactivity and recovery in the laboratory as influenced by apology. Men (n = 29) and women (n = 50) were chosen for participation based on scoring in the top or bottom third of the Forgiving Personality Inventory. Participants were exposed to an interpersonal transgression (i.e., harassment by the experimenter) while performing a serial subtraction task. Cardiovascular activity was measured before, during, and following the task. Also following the task, approximately half of the participants received an apology from the experimenter for his/her scripted rude behavior. No reactivity differences during …

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Modeling Issues For Solid Oxide Fuel Cells Operating With Coal Syngas, Francisco Elizalde-Blancas Aug 2009

Modeling Issues For Solid Oxide Fuel Cells Operating With Coal Syngas, Francisco Elizalde-Blancas

Graduate Theses, Dissertations, and Problem Reports (ETD)

Fuel cells which directly convert the chemical energy into electricity are considered one of the most promising technologies to support energy needs in the near future. Solid Oxide Fuel Cells (SOFC) can run with alternative fuels such as synthesis coal gas due to their high operating temperature. Utilization of coal syngas in fuel cells would enable cleaner coal energy. A better understanding of the chemical and transport processes when running on syngas will allow researchers to find solutions to problems currently delaying the introduction of the technology into the market. A comprehensive modeling tool is developed for simulation of SOFCs …

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Assessing The Variation Of Driver Distraction With Experience, Nagaanupama Akuraju Aug 2009

Assessing The Variation Of Driver Distraction With Experience, Nagaanupama Akuraju

Graduate Theses, Dissertations, and Problem Reports (ETD)

Driver distraction has been a major concern in highway safety. Driver distraction is related to crashes and crash rate varies with age. Driving experience obviously increases with age. The purpose of this study is to determine the relation between driver experience and distraction. The study measures the distraction levels of various drivers and assesses the variation in distraction based on experience and also gender.;Distraction was defined as looking away from the center of the roadway for more than 2 seconds. Factors like distraction duration, percent time spent looking at the center of roadway and number of glances away from the …

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Characterization Of Exhaust Emissions From Palm Oil-Based And Soybean Oil-Based Biodiesel Fueled Heavy-Duty Transit Buses, Trampas Jay Efaw Aug 2009

Characterization Of Exhaust Emissions From Palm Oil-Based And Soybean Oil-Based Biodiesel Fueled Heavy-Duty Transit Buses, Trampas Jay Efaw

Graduate Theses, Dissertations, and Problem Reports (ETD)

Biodiesel blends offer a renewable energy fueling option for compression-ignition internal combustion engines. Typically, biodiesel blended at or less than 20% (B20), by volume, will exhibit substantial reductions in diesel particulate matter (PM), while not significantly impacting oxides of nitrogen (NO X) emissions. Additionally, operation on biodiesel blended at B20 levels or less has not been associated with substantial fuel economy penalties.;A study was conducted, wherein two transit buses were utilized to quantify the emissions and performance effects associated with the use of biodiesel fuels, derived from palm oil and soybean oil. Evaluation of the two fuels was accomplished through …

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