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A Phenomenological Study Of The Lived Experience Of Nursing Students Enrolled In An Associate Degree Nursing Program., M Regina Jennette Jan 1995

A Phenomenological Study Of The Lived Experience Of Nursing Students Enrolled In An Associate Degree Nursing Program., M Regina Jennette

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to identify the lived experience of nursing students who made the decision to pursue a nursing career. This study was significant because nursing education is advocating change in the educational process and the student body in nursing today is so diverse. One hundred and sixty (160) first and second year students enrolled in an Associate Degree Nursing Program responded in writing to the research question, "How has the decision to pursue a nursing degree affected you and your life?" The Phenomenological methodology of qualitative research was used to identify and present information collected in …


Characterization Of Mesophase Pitch Materials From Petroleum And Coal-Derived Precursors: Kinetics And Rheology At Elevated Temperatures., Pravin Maruti Khandare Jan 1995

Characterization Of Mesophase Pitch Materials From Petroleum And Coal-Derived Precursors: Kinetics And Rheology At Elevated Temperatures., Pravin Maruti Khandare

Graduate Theses, Dissertations, and Problem Reports (ETD)

The mesophase pitches produced from petroleum (A240) and coal (HEXT450) have been characterized by several analytical techniques. The kinetics of mesophase formation from these two distinctly different precursor materials have been studied and an empirical kinetic equation proposed. Using the model parameters the petroleum pitch is found to have similar reactivity with respect to mesophase formation when compared with the coal-derived pitch. A new technique of determining mesophase content using computer-assisted image analysis has been demonstrated successfully and reproducibly. The technique is a useful replacement for tedious manual graphing and tracing necessary for area determination. A thermomechanical (TMA) technique for …


A Layer-Wise Theory For Linear And Failure Analysis Of Laminated Composite Beams., Youngchan Kim Jan 1995

A Layer-Wise Theory For Linear And Failure Analysis Of Laminated Composite Beams., Youngchan Kim

Graduate Theses, Dissertations, and Problem Reports (ETD)

Based on a generalized laminate plate theory, the formulation of a one-dimensional Beam finite element with Layer-wise Constant Shear (BLCS) is presented. The linear layer-wise representation of in-plane displacements permit accurate computation of normal stresses and transverse shear stresses on each layer for laminated beams with dissimilar ply stiffnesses. For the accurate computation of interlaminar shear stresses, the layer-wise constant shear stresses obtained from constitutive relations are transformed into parabolic shear stress distributions in a post-processing operation. The accuracy of the BLCS is demonstrated by solving various experimental and numerical examples reported in the literature. The BLCS formulation is extended …


The Status Of English Grammar Instruction In Master's Programs In Tesol In The United States., Joanne Zoller Wagner Jan 1995

The Status Of English Grammar Instruction In Master's Programs In Tesol In The United States., Joanne Zoller Wagner

Graduate Theses, Dissertations, and Problem Reports (ETD)

Although the TESOL Guidelines for the Certification and Preparation of Teachers of English to Speakers of Other Languages in the U.S. recommend that teacher preparation programs in TESOL offer courses in the grammatical system of English, there existed no descriptive study of nationwide curricular practice regarding English grammar instruction in master's programs in TESOL. All master's programs in TESOL listed in the Directory of Professional Preparation Programs in TESOL, 1992-1994 were surveyed in Fall 1993 regarding course offerings, requirements, placement mechanisms, course content and length, instructors, the role of grammar in the program, approval of the TESOL Guidelines, and curricular …


A Historically Oriented Physical Science Curriculum Model For High Schools In Taiwan, Roc., Li-Yu Fu Jan 1995

A Historically Oriented Physical Science Curriculum Model For High Schools In Taiwan, Roc., Li-Yu Fu

Graduate Theses, Dissertations, and Problem Reports (ETD)

The study is to develop a historically oriented physical science curriculum model for the high schools in Taiwan. Taiwan is changing into a pluralistic society, in which the learners must be confronted with certain conflicts of the beliefs, values, and ideology raised by science and technology. Historical approach in science teaching has been identified as effective in helping the learners understand the nature of science in the social and cultural context. Also, science teachers in Taiwan have recognized that a historically oriented science curriculum model is in the needs of their teaching but the history of science hardly can be …


Ergonomic Evaluation Of Assistive Devices And Manual Methods For Resident-Handling Tasks In Nursing Homes., Ziqing Zhuang Jan 1995

Ergonomic Evaluation Of Assistive Devices And Manual Methods For Resident-Handling Tasks In Nursing Homes., Ziqing Zhuang

Graduate Theses, Dissertations, and Problem Reports (ETD)

Resident-handling tasks have been identified as the primary cause of back injury among nursing professionals. The objective of this study was to evaluate resident-handling procedures to determine which procedures resulted in less biomechanical and/or psychophysical stresses to those personnel performing resident-handling tasks. The objective was accomplished through an ergonomic evaluation of different assistive devices and manual methods for performing two resident-handling tasks that place nursing personnel in nursing homes at a high risk of back injury--transferring residents from bed to a chair and lifting residents up in bed. Twelve assistive devices and two manual methods were evaluated in this laboratory …


Integrated Reliability, Availability, Maintainability Cost Modeling For The Manufacturing System Design/Operation Problem., Yavuz Goktas Jan 1995

Integrated Reliability, Availability, Maintainability Cost Modeling For The Manufacturing System Design/Operation Problem., Yavuz Goktas

Graduate Theses, Dissertations, and Problem Reports (ETD)

The level of production at a manufacturing system is limited by this system availability. Stage or component failures will decrease the available production time which in turn decrease the system throughput rate and increase the production cost. A problem that faces system designers is the need to adopt design and operating policies to enhance system availability economically to achieve their goals. This problem raises two major questions to study: (1) How to go about comparing different design and operating policy alternatives? (2) What kind of criteria should be used to pick a cost-efficient design and operating policy to satisfy the …


Psychometric Properties Of The Multiple Eating Antecedents Scale (Meal): A Behavioral Assessment Instrument For Measuring Diet Nonadherence In Diabetes Mellitus., Janice Rhea Triplett Jan 1995

Psychometric Properties Of The Multiple Eating Antecedents Scale (Meal): A Behavioral Assessment Instrument For Measuring Diet Nonadherence In Diabetes Mellitus., Janice Rhea Triplett

Graduate Theses, Dissertations, and Problem Reports (ETD)

The Multiple Eating Antecedent Scale (MEAL) is a behavioral instrument used to measure diet nonadherence in people with diabetes mellitus. The current study was conducted to gather additional reliability and validity indicators of the MEAL. A prospective design was used to measure diet, blood glucose, stress and adherence in 38 adults with blood Type I and Type II diabetes mellitus for four consecutive days. Comparisons were made between self-monitoring data and MEAL scores. In addition MEAL category scores were compared to established diabetes-specific questionnaires as a measure of MEAL validity. Results indicated that the MEAL has good one week test-retest …


Alcohol Treatment Issues: Professional Differences., Stella Y. Hshieh Jan 1995

Alcohol Treatment Issues: Professional Differences., Stella Y. Hshieh

Graduate Theses, Dissertations, and Problem Reports (ETD)

The current practice of alcohol treatment in many agencies implies the distinction between addiction treatment and mental health treatment. This study attempted to investigate how the psychologists and addiction counselors might possess different philosophies and treatment approaches. It also attempted to examine how the differences might affect linkages across service system boundaries. Subjects were professionals who were actively involved in the treatment of problem drinking. Samples were selected from psychologists affiliated with the American Psychological Association (APA) and alcoholism counselors affiliated with the National Association of Alcoholism and Drug Abuse Counselors (NAADAC). A survey questionnaire was sent to each subject, …


Even Start Parents' Practices And Views Of Literacy With Preschool-Aged Children., Diane E. Karther Jan 1995

Even Start Parents' Practices And Views Of Literacy With Preschool-Aged Children., Diane E. Karther

Graduate Theses, Dissertations, and Problem Reports (ETD)

The family's influence on children's learning has been well documented in the literature. Early literacy experiences in the home can facilitate children's acquisition of reading and writing skills and impact school achievement. A lowered socioeconomic level and low educational achievement challenge parents' abilities to provide literacy experiences for their children. The purpose of the present study was to examine the literacy practices of families who participated in an Even Start Family Literacy program and to describe parents' views of education and role of teacher of their children. Data for three case families were collected by semi-structured interviews of five parents …


The Effects Of Goal Setting And Imagery Training Programs On The Free-Throw Performance Of Female Basketball Players., Bart Steven Lerner Jan 1995

The Effects Of Goal Setting And Imagery Training Programs On The Free-Throw Performance Of Female Basketball Players., Bart Steven Lerner

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to investigate the effects of a goal setting, imagery, and a combined goal setting and imagery training program on the free-throw performance among female collegiate basketball players over the course of an entire season. A multiple-baseline, single-subject design was employed in which participants were randomly assigned to one of three interventions: (1) goal setting ({dollar}n=4{dollar}), (2) imagery ({dollar}n=4{dollar}), or (3) goal setting and imagery ({dollar}n=4{dollar}). Free-throw data were collected during practice sessions and games. Data were examined by way of changes in mean, level, trend, latency, and variability between baseline and intervention, and then …


The Effects Of Lupus On Flannery O'Connor And Some Of Her Works., Elizabeth Deidre Davis Jan 1995

The Effects Of Lupus On Flannery O'Connor And Some Of Her Works., Elizabeth Deidre Davis

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study is to show the influence of lupus on the life and selected works of Flannery O'Connor. Through reading O'Connor's manuscripts, letters, and books, correspondence with Nancy Bray, curator of the Flannery O'Connor collection, and Sally Fitzgerald, and visiting Milledgeville, Georgia, the author has been able to describe O'Connor's life before and after she was diagnosed with Systemic Lupus Erythematosus. Because the author is also a victim of a connective tissue disease, similar to lupus, she has shared many of the same symptoms of O'Connor which are also detailed. O'Connor's two novels, some of her short …


The Efficacy Of Adolescent Rape Prevention Education, Ruth E. Kershner Jan 1995

The Efficacy Of Adolescent Rape Prevention Education, Ruth E. Kershner

Graduate Theses, Dissertations, and Problem Reports (ETD)

During the past several years, an increased number of rapes have been reported in the adolescent population (Ageton, 1983; Erickson & Rapkin, 1991; Gidycz & Koss, 1989; Hall & Flannery, 1984; Hayman, 1971; Katz & Mazur, 1979; Krasner, Meyer, & Carroll, 1976; MaCahill, Meyer, & Fischman, 1979; Mann, 1981; McDermott, 1979; Medea & Thompson, 1974; U.S. Dept. of Justice, 1985; Walmsley & White, 1979; Warshaw, 1988). The problem has become so widespread that the U.S. Department of Health and Human Services has included reduction of rape and attempted rape of women aged 12 and older as a goal in its …


Ain't Misbehavin' : A Study Of Teacher Misbehaviors, Related Communication Behaviors, And Student Resistance, Danielle J. Dolin Jan 1995

Ain't Misbehavin' : A Study Of Teacher Misbehaviors, Related Communication Behaviors, And Student Resistance, Danielle J. Dolin

Graduate Theses, Dissertations, and Problem Reports (ETD)

This examined teacher misbehaviors' relationships to student cognitive and affective learning, student liking of the instructor, and student resistance. Socio-communicative style, nonverbal immediacy, and behaviors characteristic of communication anxiety were examined as possible predictors of learning, liking, and misbehaviors. Factor structures of the resistance behaviors and of the teacher misbehaviors were explored. Data were collected both at the beginning of a semester and at the end of a semester survey. Results suggest consistency with previous models. Responsiveness, nonverbal immediacy. and teacher misbehaviors all contribute a significant amount of variance to learning. New dimensions for the teacher misbehavior and student resistance …


Staging Whoredom: Prostitution On The Renaissance Stage., Gregory George Winland Jan 1995

Staging Whoredom: Prostitution On The Renaissance Stage., Gregory George Winland

Graduate Theses, Dissertations, and Problem Reports (ETD)

Recent critics of Shakespeare's plays have acknowledged that the playwright's treatment of the lower classes is not as negative as once believed. Yet more critics claim the Shakespeare presented prostitutes and bawds, certainly among the lowest members of society, with callous indifference if not contempt. The plays that take up the issue of illicit sex reveal that Shakespeare's prostitutes and bawds are given the opportunity to speak about their problems from the stage. His plays consistently imply that the prostitutes are not a fountainhead of evil, that they carry out their profession simply as a means of survival. The dissertation …


Political Culture And The Coal Economy In The Upper Monongahela Region: 1776-1933., Michael Edward Workman Jan 1995

Political Culture And The Coal Economy In The Upper Monongahela Region: 1776-1933., Michael Edward Workman

Graduate Theses, Dissertations, and Problem Reports (ETD)

The industrialization of Appalachia traditionally has been understood in terms of the penetration and exploitation of the region by outside capitalists. The role of indigenous capitalists in the development of the coal and other industries has been neglected. Most development studies have focused on the Central portions of Appalachia, virtually ignoring the northern parts of the region, including the Upper Monongahela region of Northern West Virginia. Moreover, most studies of industrialization have focused on the rural, rather than the urban, parts of the region. Furthermore, the study of the role of coal miners and the miners' union (United Mine Workers …


Experimental Study On The Hydrodynamics In The Riser Of A Circulating Fluidized Bed., Heping Yang Jan 1995

Experimental Study On The Hydrodynamics In The Riser Of A Circulating Fluidized Bed., Heping Yang

Graduate Theses, Dissertations, and Problem Reports (ETD)

Circulating fluidized bed technology has been widely employed in the energy conversion industry and drawn a considerable amount of research attention to itself. The world-wide research effort on the circulating fluidized bed partially comes from the new emission standards which impose very strict limitations on the coal-powered electrical industry. In the circulating fluidized bed riser, a dilute, upward core in the center region is surrounded by a dense, downward annulus. The solid cluster formation in the annulus near the wall of the riser predominates the flow inside the riser and a transient interface of the core-annulus inside the riser exists. …


A Narratological Reading Emphasizing The Narrator/Narratee Relationships In Mary Shelley's "Frankenstein", Charles Robert Maturin's "Melmoth The Wanderer", And J. Sheridan Le Fanu's "Carmilla"., Marion Carol Zwickel Jan 1995

A Narratological Reading Emphasizing The Narrator/Narratee Relationships In Mary Shelley's "Frankenstein", Charles Robert Maturin's "Melmoth The Wanderer", And J. Sheridan Le Fanu's "Carmilla"., Marion Carol Zwickel

Graduate Theses, Dissertations, and Problem Reports (ETD)

The focus of this study is a narratological reading emphasizing the narrator/narratee relationships in three highly mediated, nineteenth century, English Gothic novels: Mary Shelley's Frankenstein (1817); Charles Robert Maturin's Melmoth the Wanderer (1820); and, J. Sheridan Le Fanu's Carmilla (1872). A narratological reading depicts how the form of these novels illuminates their content to demonstrate that these Gothic stories do have redeeming literary merits and are not just popular fiction. The introduction discusses Gerald Prince's theory of narrator/narratee relationships which he explicates in his article "The Introduction to the Study of the Narratee" (Poetique 1973). Next, the introduction explains the …


Applicability Of Bispectral Analysis To Unstable Plasma Waves, Renaud Stauber Jan 1995

Applicability Of Bispectral Analysis To Unstable Plasma Waves, Renaud Stauber

Graduate Theses, Dissertations, and Problem Reports (ETD)

A program to implement a spectral analysis technique called the bispectrum was written and tested with computer generated time series data. The application of the algorithm to the study of nonlinear interactions was demonstrated by a comparison of computed quantities with results from model equations found in the literature. Specifically determined were: the amplitude and phase of coupling coefficients, the power transfer function, the fraction of power associated with nonlinear coupling, and the identification of waves involved in a quadratic coupling interaction. A method of distinguishing the two parent waves from the daughter wave in this three-wave interaction is proposed …


Leadership Of Behavior Disorders Programs In West Virginia., Carol J. Graham Jan 1995

Leadership Of Behavior Disorders Programs In West Virginia., Carol J. Graham

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study was designed to examine the relationship of principal leadership and teacher behavior on the movement of students to a lesser restrictive environment. The specific lesser restrictive environment studied in this paper was the regular education program. The relationship between principal leadership through teacher behavior and the movement of the behavior disorders student from the behavior disorders classroom to the regular education classroom were examined in this study. The two hypotheses that guided this study were as follows: (1) the movement of behavior disorders (B.D.) students does not significantly regress on factors of the principal leadership; (2) there is …


Constructing The Chaucer Corpus: A Study Of Cambridge, University Library, Ms. Gg.4.27., Matthew Clark Wolfe Jan 1995

Constructing The Chaucer Corpus: A Study Of Cambridge, University Library, Ms. Gg.4.27., Matthew Clark Wolfe

Graduate Theses, Dissertations, and Problem Reports (ETD)

Cambridge, University Library, MS. Gg.4.27, brings together more of Geoffrey Chaucer's work than any other extant manuscript. It contains Troilus and Criseyde, The Canterbury Tales, Legend of Good Women, Parliament of Fowls, and other poems. MS. Gg.4.27 is also important for its unique spellings, its organization, and its value as a corpus. Based on my examination of the manuscript, I argue that MS. Gg.4.27 is the earliest surviving effort to create a corpus of Chaucer's poetry and that the manuscript and its production provide important information about the reception of Chaucer in the fifteenth century. As there are no manuscripts …


Development Of A Stable Tetrahedral Finite Element For Metal Forming Analysis., V B. Rachakonda Jan 1994

Development Of A Stable Tetrahedral Finite Element For Metal Forming Analysis., V B. Rachakonda

Graduate Theses, Dissertations, and Problem Reports (ETD)

A nonlinear 'velocity-pressure' mixed finite element formulation for three dimensional rigid-viscoplastic analysis of metal forming problems is presented. It adequately takes into account the nonlinear material behavior and the large deformations that occur during metal forming operations. A ten-noded tetrahedral finite element with a quadratic interpolation in velocity and linear interpolation in pressure is used to discretize the domain of the deforming body. The salient feature of the formulation is the enforcement of the incompressibility requirement necessitated by the use of the rigid-viscoplastic constitutive law by modifying the constitutive equation to include a pressure variable and adding an additional constraint …


Interpretation Of Data From A Horizontal Heat Transfer Tube In A Bubbling Fluidized Bed., Ali Ihsan Karamavruc Jan 1994

Interpretation Of Data From A Horizontal Heat Transfer Tube In A Bubbling Fluidized Bed., Ali Ihsan Karamavruc

Graduate Theses, Dissertations, and Problem Reports (ETD)

Prior calculations of heat transfer coefficients for an experimental horizontal tube in a bubbling fluidized bed have assumed that the heat conduction through the tube wall is one dimensional. However, a comparison between one dimensional (1D) and two dimensional (2D) analyses and comparing them with experimental data shows that there exists a significant difference between 1D and 2D calculations. The analysis was accomplished by solving the unsteady 1D and 2D heat conduction equation across the tube wall numerically. The boundary conditions were taken from the temperature data measured at five different locations around the horizontal tube simultaneously. A correction factor …


Antecedents Of Behavioral Loyalty To A Selected Recreational Sport/Fitness Program., Se-Hyuk Park Jan 1994

Antecedents Of Behavioral Loyalty To A Selected Recreational Sport/Fitness Program., Se-Hyuk Park

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study investigated the antecedents of behavioral loyalty and the relationships among the study variables. The data used in the analyses were collected from participants of a recreational sport/fitness center. Data were collected through a combination of on site and mail survey. The results of the multivariate analyses were based on 208 completed usable questionnaires. The present study corroborated the idea that involvement and attitudinal loyalty constructs should be viewed multidimensionally. Factor analyses produced three factor structure for attitudinal loyalty construct (normative, affective, and investment loyalty), and four factors for involvement construct (self-expression, importance-pleasure, risk-consequence, and risk probability). These dimensions …


Three-Dimensional Color: Development Of A Machine Vision Colorimeter., William K. Preece Jan 1994

Three-Dimensional Color: Development Of A Machine Vision Colorimeter., William K. Preece

Graduate Theses, Dissertations, and Problem Reports (ETD)

This document proposes a patent pending process, called 3D COLOR, to measure color and appearance of three-dimensional (3D), non-specifically oriented objects with a 24 bit color machine vision system. The core technology of 3D COLOR encompasses image correction and shading correction. A methodology is developed and implemented for improving image fidelity by calibrating and removing camera, illumination, and optical influences from the image. Techniques for removing the shape induced shading from the image data of a three-dimensional object are explored. This facilitates large region analysis of color and appearance for finished products and on-line color monitoring for nonplanar web processes …


Enhanced Heat Transfer In A Cylindrical Cavity With Periodically Perturbed Annular Flames., Robert Allen Roach Jan 1994

Enhanced Heat Transfer In A Cylindrical Cavity With Periodically Perturbed Annular Flames., Robert Allen Roach

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this investigation was to experimentally examine the enhanced heat transfer and emission reduction characteristics of periodically perturbed annular natural gas flames issuing into a cylindrical cavity. Perturbation modes for the fluidic nozzles included the use of steady, axially oscillating, and radially oscillating annular flames. The testing process involved two phases. Phase one quantified the instantaneous and time averaged heat fluxes and the amount of NOx production from the natural gas flames. For the three nozzle diameters (19 mm, 25.4 mm, and 38.1 mm) tested, the equivalence ratios ranged from 0.6 to 1.0, the pulsation frequencies from steady …


Characterizing Interfacial Adhesion Between Wood Fibers And A Thermoplastic Matrix., Feipeng P. Liu Jan 1994

Characterizing Interfacial Adhesion Between Wood Fibers And A Thermoplastic Matrix., Feipeng P. Liu

Graduate Theses, Dissertations, and Problem Reports (ETD)

Interfacial adhesion across the fiber/matrix interface plays a critical role in controlling the performance of reinforced wood fiber and thermoplastic composites. In this study, the surfaces of cellulosic (rayon, cotton, and wood) fibers were chemically modified with acetic anhydride and styrene-maleic anhydride copolymers, producing different and controlled fiber surface morphologies and chemical functionalities. A specific emphasis was given to the modification to wood fiber surfaces. Dynamic contact angle (DCA) analysis and a microbond test were used to determine the fiber surface free energy and the acid/base interaction and evaluate the interfacial shear strength (ISS) between modified wood fibers and a …


The Effects Of Metaphor On Writing Quality In Elementary School Children., Jane Frances Rudden Jan 1994

The Effects Of Metaphor On Writing Quality In Elementary School Children., Jane Frances Rudden

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study addressed the effect of metaphor on the quality of writing in 1st-/2nd-graders (Group A, N = 7), 2nd-/3rd-graders (Group B, N = 17), 3rd-/4th-graders (Group C, N = 9), and 4th-/5th-graders (Group D, N = 12). These grade levels are representative of the literal or conventional phase of expression wherein there is a typical resistance shown toward the use of metaphor. This study also focused on the relationship between frequency of metaphor and writing quality, and the effects of grade on quality scores over time. Each group received instruction in metaphor competence and wrote in response to a …


Nitrogen Transformations And Nitrate Leaching In Mine Soils Reclaimed With Sewage Sludge And Coal Combustion Residues., Pradeep Saini Jan 1994

Nitrogen Transformations And Nitrate Leaching In Mine Soils Reclaimed With Sewage Sludge And Coal Combustion Residues., Pradeep Saini

Graduate Theses, Dissertations, and Problem Reports (ETD)

Nitrogen mineralization and nitrate leaching were investigated in an acid mine soil reclaimed with sewage sludge (SS) and coal combustion residues (CCR). In the field experiments mine soil was amended with three rates of SS (0, 1200, and 2400 kg N ha{dollar}\\sp{lcub}-1{rcub}){dollar} and two types of CCR, i.e. fly ash (FA) and fluidized bed waste (FBW) applied at rates equivalent to once and twice the lime requirement of the soil. Laboratory incubation experiments using two procedures (leached and nonleached) were also conducted for 46 weeks to investigate N mineralization in an acid mine soil with or without liming agents (agricultural …


A Biological System For The Dissolution Of Insoluble Phosphate Ores: 2-Ketogluconate Increases The Solubility Of Soil Phosphates., Joanne Marie Scalzitti Jan 1994

A Biological System For The Dissolution Of Insoluble Phosphate Ores: 2-Ketogluconate Increases The Solubility Of Soil Phosphates., Joanne Marie Scalzitti

Graduate Theses, Dissertations, and Problem Reports (ETD)

The following investigation examined a biological system employing bacterially-derived 2-ketogluconate (2KG) for the dissolution of insoluble soil phosphates. It has been suggested that 2KG solubilizes insoluble soil phosphates by either a reduction in soil pH or by chelating divalent cations. The capability of 2KG derived from Pseudomonas aeruginosa PAO1 to solubilize phosphate ores and the mechanism by which this dissolution occurs were investigated in vitro and in vivo. The dissolution of all three ores was shown to be dose-dependent, non-linear, and not correlated with a significant reduction in pH of the solution. The dissolution of IP and RP resulted in …