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Low Temperature Dissolution Of Coal., Dianne Dorland
Low Temperature Dissolution Of Coal., Dianne Dorland
Graduate Theses, Dissertations, and Problem Reports (ETD)
The dissolution effectiveness of a solvent solution of 50% aqueous sodium hydroxide and elemental sulfur was studied. The effects of varying amounts of added elemental sulfur (from 0.5% to 50% of the weight of the coal plus sulfur) over a temperature range of 100(DEGREES)C to 250(DEGREES)C and reaction times from 10 minutes to 3 hours were examined. The coals used in the study were a Bakerstown bituminous, a Wyodak subbituminous, a North Dakota lignite, and a Savage lignite. The reaction of the dissolution products with carbon monoxide and water in a basic system with iron pentacarbonyl as catalyst was also …
A Model Of Disequilibrium Adjustments Between Spot And Futures Markets (Econometrics)., Randy E. Holliday
A Model Of Disequilibrium Adjustments Between Spot And Futures Markets (Econometrics)., Randy E. Holliday
Graduate Theses, Dissertations, and Problem Reports (ETD)
This dissertation examines commodity markets with futures trading. In particular it attempts to model commodity markets with futures trading by integrating aspects of both futures and spot markets. It is argued that factors that affect the spot market, will affect the futures market, and vice versa. Therefore, a model describing a commodity with futures trading should depict the interaction between these two markets. The second area of interest in this dissertation is the short run disequilibrium aspects of commodity markets with futures trading. The characteristics of disequilibrium discussed include lags, expectations, excess demand, excess speculative demand and learning. Expectations are …
Effect Of Lumbar Posture On Lifting (Back, Trunk Muscles, Emg)., Dennis Louis Hart
Effect Of Lumbar Posture On Lifting (Back, Trunk Muscles, Emg)., Dennis Louis Hart
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this research was to determine if there were any differences in (1) lumbar spine flexion moments or (2) activity of the lumbar erector spinae or external oblique muscles while varying (1) lumbar postures and (2) hand heights used to lift a load. A completely randomized design with repeated measures was used. 20 male workers (32.9 (+OR-) 12.4 years, 178.3 (+OR-) 6.8 cm, 81 (+OR-) 14.7 kg) employed in positions requiring manual lifting assumed specific lumbar spine postures (subject preferred, kyphotic, straight or lordotic), lifted a 157 N crate to three different hand heights (25, 50, 76 cm), …
Expected Use Of Management Principles For Safety Function Management., Anthony Thomas Veltri
Expected Use Of Management Principles For Safety Function Management., Anthony Thomas Veltri
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study determined the extensiveness that management principles should be used during management of the Safety Function. This study makes available to enterprise managers research based data which can be useful in managing operations that counteract Risk, Danger, and Loss to enterprise resources. The investigator constructed and grouped 40 management principles according to management practices, (i.e., planning, organizing, leading, controlling, evaluating) based upon a review of professional literature pertaining to management. Eight Management Textbook Author jurors assisted in the refinement of these statements. The result was majority consensus acceptance of 42 management principles. The refined list of management principles was …
Mechanisms Of Particle Transfer In A Liquid, Liquid System: Model Particle Study., Che-An Ku
Mechanisms Of Particle Transfer In A Liquid, Liquid System: Model Particle Study., Che-An Ku
Graduate Theses, Dissertations, and Problem Reports (ETD)
The wetting characteristics of silica microbeads are modified by varying the reaction between the surface silanols with t-butyldimethylchlorosilane. The wicking method is used to obtain the contact angle of the particle systems. Increasing hydrophobicity is observed with increasing silanizing reaction. The surface free energy of particles are calculated from the contact angle data. Nondispersive contribution decreases with increasing hydrophobicity while dispersive component remains unchanged. A mathematical model is developed which considers both the hydrodynamics and the induction times of the system. The transfer rates to and from the water phase are first order with respect to the particle concentrations in …
Search For New Membrane Active Substances: Synthesis Of 3-Tropanols With Alkyl, Alkenyl And Alkenynyl Group At The Bridgehead, Ramalinga Murty Dharanipragada
Search For New Membrane Active Substances: Synthesis Of 3-Tropanols With Alkyl, Alkenyl And Alkenynyl Group At The Bridgehead, Ramalinga Murty Dharanipragada
Graduate Theses, Dissertations, and Problem Reports (ETD)
In recent years, Witkop and coworkers have isolated several structurally unique alkaloids from the colombian frog belonging to the genera Dendrobates. These alkaloids, which occur in the defensive skin secretions of the frog have been found to be highly active venoms as well as mucosal tissue irritants towards both mammals and reptiles. Among them are three important alkaloids histrionicotoxin, isodihydrohistronicotoxin and octahydrohistronicotoxin.
Antiferromagnetic Ordering Effect On The Optical Transitions In Manganese-Difluoride., Sabri Asaad Abumansoor
Antiferromagnetic Ordering Effect On The Optical Transitions In Manganese-Difluoride., Sabri Asaad Abumansoor
Graduate Theses, Dissertations, and Problem Reports (ETD)
Temperature dependence of all the optical absorption bands of MnF(,2) in the range 2000-6000 (ANGSTROM) has been studied using Cary 14 spectrophotometer in conjunction with Air Products Displex, a closed cycle helium refrigerator. Peak position, width and oscillator strength of the bands, namely A through I, were measured as a function of temperature in the region between 10 K-300 K, with a particular attention to the region near the Neel temperature (T(,N) = 67.3 K). On lowering the temperature through T(,N), all bands undergo blue-shifts, the intensity and line-width of main bands decreased except band G and I whose intensity …
Comparison Of Acquisition And Generalization Levels Of Manual Signing With Moderately Retarded Persons (Language, Parent Training)., Cynthia Sue Allen
Comparison Of Acquisition And Generalization Levels Of Manual Signing With Moderately Retarded Persons (Language, Parent Training)., Cynthia Sue Allen
Graduate Theses, Dissertations, and Problem Reports (ETD)
Educators working with mentally retarded and other severely communication-delayed students have begun incorporating sign language into their curriculum to promote language development. In most instances, these methods do not facilitate generalization to the natural environment where the language is actually used. This study investigated whether acquisition of sign language with moderately mentally retarded individuals is attained faster when taught in home settings by the parent or at school by the teacher in a clinical environment. Six students, ages six to twenty, attending a public special education program in central West Virginia served as subjects. All were diagnosed as moderately mentally …
Reflectance Indicatrix Of Vitrinite: Its Orientation And Application (Paragenetic, Stress, Pennsylvania, Canada, Appalachians)., Louis Loung-Yie Tsai
Reflectance Indicatrix Of Vitrinite: Its Orientation And Application (Paragenetic, Stress, Pennsylvania, Canada, Appalachians)., Louis Loung-Yie Tsai
Graduate Theses, Dissertations, and Problem Reports (ETD)
The orientation of the optical axis, or the minimum reflectance of the reflectance indicatrix of vitrinite, can be used to indicate the direction of maximum stress, i.e., the resultant stress of vertical compaction and lateral stress, during coalification. Furthermore, the attitude of the minimum reflectance with reference to bedding plane is a good parameter for evaluating whether maximum thermal maturation is achieved prior to or after folding or other structural changes, and thus reflects the tectonic and coalification history of coal. The purpose of this study was to investigate the orientation of the reflectance indicatrix of vitrinite and relate it …
An Examination Of The Effect(S) Of Specified Teacher Behaviors On Student Alt-Pe (Operationalized, Research, Evaluation)., Debra Sue Berkey
An Examination Of The Effect(S) Of Specified Teacher Behaviors On Student Alt-Pe (Operationalized, Research, Evaluation)., Debra Sue Berkey
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this study was to examine the effects of the manipulation of the rates of specified teacher behaviors (specific observation followed by reinforcement) on the percentage of ALT-PE of students participating in public school physical education classes. A multi-element research design was employed to observe two classes of fifth grade students during a fifteen day treatment period. There were three levels of the independent variable: high (5.0 sequences of specific observation followed by reinforcement); low (1.0 episode or less of either specific observation or reinforcement); and mixed (5.0 occurrences of specific observation but 1.0 or less of reinforcement). …
Safety Of Front-End Loaders Evaluated By Workload And Performance (Simulator, Subjective Reporting, Physiological, Reaction Time, Vigilance)., Mehran Lotfi Najafabadi
Safety Of Front-End Loaders Evaluated By Workload And Performance (Simulator, Subjective Reporting, Physiological, Reaction Time, Vigilance)., Mehran Lotfi Najafabadi
Graduate Theses, Dissertations, and Problem Reports (ETD)
The safety of front-end loaders should be given the highest priority in research since they have been involved in 27% of fatal accidents and 22.4% of non-fatal accidents in surface mining, second only to trucks. Operator safety was considered to depend on the workload, environmental stressors and the subsequent deterioration in performance. Operator workload intensity was established by analyzing tasks and stressors in each segment of the cycle. Deterioration in performance was measured by increases in reaction time and by frequency of errors. A physical simulator was designed and constructed to generate operational task demands in a controlled laboratory environment. …
A Railroad Terminal Evaluation Methodology (Classification, Yard), John David Miller
A Railroad Terminal Evaluation Methodology (Classification, Yard), John David Miller
Graduate Theses, Dissertations, and Problem Reports (ETD)
In this study a methodology using a computer simulation model for the design or redesign of rail classification yards was formulated, refined, tested and analyzed. The procedure concentrated upon developing both process and measures for evaluating the performance and efficiency of alternative yard configurations. The methodology addresses large scale yard systems analysis and properly assesses operating policy decisions. The evaluation is divided into three hierarchical levels of analysis that are integrated with traditional yard layout design. The approach involves using a computer model to evaluate multiple alternatives under the same overall traffic loads. In the first two levels, individual yards …
Multi-Dimensional Assessment Of The Effects Of Dialysis On The Marital Relationship., Stephen Serafino Simone
Multi-Dimensional Assessment Of The Effects Of Dialysis On The Marital Relationship., Stephen Serafino Simone
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study examined the marital profiles of couples with one member on dialysis. These profiles were then compared to the marital profiles of nondialysis, nondistressed couples to determine if there were differences in ratings of marital satisfaction and in the behavioral correlates associated with marital distress. Four marital inventories were administered to 15 dialysis and to 15 nondialysis, nondistressed couples. These instruments included the Spouse Observation Checklist, Marital Satisfaction Inventory, Areas of Change Questionnaire, and the Locke-Wallace Marital Adjustment Scale. The results of 2 x 2 Analyses of Variance showed that dialysis couples could be differentiated from nondialysis, nondistressed couples …
The Educative Value Of Literary Art: A Conceptual Framework For Secondary Literature Education (Reader-Response)., Sharon Sharp Smith
The Educative Value Of Literary Art: A Conceptual Framework For Secondary Literature Education (Reader-Response)., Sharon Sharp Smith
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this study is to construct a conceptual framework for secondary literature education based on the individual reader's experience with a literary work. The defining characteristics of literature education theory are stipulated as follows: (a) Literature education theory is not scientific; (b) Literature education theory, like any educational theory, should be an open system; (c) Literature education theory provides justification for literature as a secondary school subject by specifying the educative value of literature; (d) Literature education theory should contain a concept of growth; (e) Literature education theory should provide general aims or goals for literature instruction; and, …
Dissolution Kinetics Of Hydrocortisone Into Polymer Solutions (Steroids)., Nahla Nassar Khoury
Dissolution Kinetics Of Hydrocortisone Into Polymer Solutions (Steroids)., Nahla Nassar Khoury
Graduate Theses, Dissertations, and Problem Reports (ETD)
A major concern of investigators during the last decade has been the evaluation of the relative therapeutic effectiveness of competitive drug products. The problem of bioavailability is further exaggerated for steroidal drugs formulated as suspensions because of low intrinsic solubility, and the addition of stabilizing ingredients, such as polymers, to the formulations. An in vitro evaluation of the dissolution rate of hydrocortisone alcohol and acetate from constant surface area tablets into dilute polymer solutions was undertaken since dissolution rate is a relevant characteristic concerning therapeutic availability for sparingly soluble drugs. Polymers of varying chemical type and in dilute concentrations, similar …
Moessbauer Study Of Supported Iron And Manganese Catalysts., Mohamed Salem Ellid
Moessbauer Study Of Supported Iron And Manganese Catalysts., Mohamed Salem Ellid
Graduate Theses, Dissertations, and Problem Reports (ETD)
Mossbauer Effect Spectroscopy was used in conjunction with x-ray diffraction catalysts in order to obtain a better understanding of the role of manganese and the effect of the support on these bimetallic catalysts. This study was carried out on the bimetallic catalysts iron-manganese supported on alumina or silicalite with different percentages of loading and under various treatments (calcination, reduction, carburization, and during Fischer-Tropsch reaction). In the cases of a pure iron catalyst and unsupported iron-manganese catalysts, the oxidation state was identified from x-ray diffraction and Mossbauer spectroscopy as (alpha)-Fe(,2)O(,3) with hyperfine fields of 511 (+OR-) 3 kOe, 508 (+OR-) 3 …
Reality Therapy Applied To The Elementary Music Classroom (Discipline, Time-Out)., John David Faber
Reality Therapy Applied To The Elementary Music Classroom (Discipline, Time-Out)., John David Faber
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this research was to compare the effects of reality therapy in the elementary music classroom to the effects of two other disciplinary systems: removal from the class activity, and the assignment of extra work. Specifically, the effects of the three systems on student perceptions of classroom behavior and student attitude were compared. The amount of perceived disorderly behavior typical of each class was measured by the "My Class Inventory." Student attitude toward music class was measured by a semantic differential adapted by the researcher: the "Music Class Attitude Scale." Forty-eight general music classes were randomly assigned one …
Structural Design Guidelines For Longwall Panel Layout., Sui-Min Hsiung
Structural Design Guidelines For Longwall Panel Layout., Sui-Min Hsiung
Graduate Theses, Dissertations, and Problem Reports (ETD)
Successful longwall mining requires a good roof control. A good roof control implies that: (1) no excessive pressue is built up in the face powered supports, and (2) chain pillars are designed in such a way that panel entries are well protected and interactions between adjacent panels are minimized. A clear understanding of strata behavior around longwall panels due to face movement is, therefore, the foremost requirement for achieving better roof control. This dissertation is designed to analyze the effects of strata behavior on longwall panels due to the mining activities. The following topics are studied: (1) the weighting phenomena …
Analysis Of Raw Material Extraction Through Simulation: A Timber Harvesting Example (Forest Engineering, Production Planning, Logging)., Leonard Roy Johnson
Analysis Of Raw Material Extraction Through Simulation: A Timber Harvesting Example (Forest Engineering, Production Planning, Logging)., Leonard Roy Johnson
Graduate Theses, Dissertations, and Problem Reports (ETD)
Raw material extraction processes face problems that differ from those encountered in most production systems. Production steps are often quite simple, but material handling and inprocess inventory are complicated by a constantly changing environment. The factory that delivers raw materials must be mobile and flexible to handle variations that occur in the raw material environment. Techniques used to analyze problems common to factories at fixed locations are often inappropriate for extraction processes. A simulation model of the extraction process can be used to provide input to many production planning steps. It should consist of three components. The production process can …
Multivariable System Identification Coal Gasification Process., Ali Reza Delavari
Multivariable System Identification Coal Gasification Process., Ali Reza Delavari
Graduate Theses, Dissertations, and Problem Reports (ETD)
Obtaining information on the dynamic behavior of a system or process for ultimate use in control strategies is essential. Identification of a system in real time is divided into two areas, parametric and non-parametric. In the non-parametric method a model is not assumed for the system, while in the parametric method a prior assumption of a given model form with unknown parameters is necessary. The objectives of this research are: (a) Detail studies of various methods of parametric identification in transfer function form, developing and extending some of these methods and a new method for multivariable discrete-time systems. Many criterions …
Evaluation Of Rock Phosphate And Fly Ash Amendments To Ameliorate Toxic Condition In Acid Mine Soils For Crop Production., Hussein Eisa Ghazi
Evaluation Of Rock Phosphate And Fly Ash Amendments To Ameliorate Toxic Condition In Acid Mine Soils For Crop Production., Hussein Eisa Ghazi
Graduate Theses, Dissertations, and Problem Reports (ETD)
A greenhouse investigation was conducted with corn and alfalfa to evaluate rock phosphate (rock-P) and fly ash as amendments to ameliorate toxic conditions in three acid mine soils. The extremely acid mine soils from Valley Point (VP), Westover (WO), and Lenox (LX) were each mixed with fly ash at a rate of 0%, 33% or 67%, and with rock-P at a rate of 0, 10, 20 or 40 g/kg soil in a factorial combination. In a corollary experiment, rock-P was replaced with fertilizer consisting of monocalcium phosphate (200 kg P/ha), KNO(,3) and KCl (112 kg/ha), calcium carbonate (225 kg Ca/ha), …
The Influence Of A Thermal Oxide Layer On Short-Term Degradation Of Silicon Mis Solar Cell Output., Abdul Rahman Alamoud
The Influence Of A Thermal Oxide Layer On Short-Term Degradation Of Silicon Mis Solar Cell Output., Abdul Rahman Alamoud
Graduate Theses, Dissertations, and Problem Reports (ETD)
Metal-semiconductor (Schottky-barrier) solar cells have lower open-circuit voltage than p-n junction solar cells. The open-circuit voltage of a Schottky-barrier solar cell can be increased by the use of an ultrathin oxide layer between the metal and the semiconductor. Fabrication and testing of MIS solar cells with steam-grown oxide layers shows that short-term degradation occurs (within six weeks) and is indicated by lowering maximum power output. Degradation occurs independent of environmental conditions. Auger Electron Spectroscopy (AES) depth-profiles show that degradation is due to growth of a metal-oxide layer at the metal-SiO(,2) interface. This process occurs in a few weeks; with high …
A Comparison Of An Active And A Passive Relaxation Procedure For The Management Of General Anxiety (Relaxation, Stress Management, Sensory Awareness)., Jeffrey Alan Knight
A Comparison Of An Active And A Passive Relaxation Procedure For The Management Of General Anxiety (Relaxation, Stress Management, Sensory Awareness)., Jeffrey Alan Knight
Graduate Theses, Dissertations, and Problem Reports (ETD)
Relaxation training procedures have been used increasingly over the last 20 years as a treatment intervention for generalized anxiety. Treatment of anxiety is often approached from the broader perspective of stress management training using relaxation procedures as components of the treatment protocol. Historically, active relaxation techniques, such as progressive muscle relaxation, have been employed in stress management programs, although passive relaxation techniques, those not requiring muscle tension release, have also proven effective in reducing symptoms of tension and anxiety. The present study was designed to compare the efficacy of a clinically proven, but empirically untested, passive relaxation procedure called Sensory …
World And Being In Wordsworth's "Prelude" (Phenomenology)., James Preston Hissom
World And Being In Wordsworth's "Prelude" (Phenomenology)., James Preston Hissom
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study approaches the problem of the relation of man and nature in William Wordsworth's The Prelude from the phenomenological perspective developed in Martin Heidegger's early work, Being and Time. More specifically, I attempt to work out a detailed comparison between Wordsworth's description of nature as an environing and supporting presence and Heidegger's notion of "world" as an irreducible component of human existence. In contrast to most philosophically oriented critics of The Prelude, who locate Wordsworth's ideas within the metaphysical context of English empiricism or continental transcendentalism and idealism, I argue that the structure of experience presented in ThePrelude actually …
An Analysis Of Learning Styles Of Registered Nurse Students, Basic Nursing Students, And Nurse Educators In A Baccalaureate Nursing Program., Margaret Ann Marcinek
An Analysis Of Learning Styles Of Registered Nurse Students, Basic Nursing Students, And Nurse Educators In A Baccalaureate Nursing Program., Margaret Ann Marcinek
Graduate Theses, Dissertations, and Problem Reports (ETD)
There were two purposes of this study. The primary purpose was to determine if a significant difference in learning styles exists among registered nurse students, basic nursing students, and nurse educators in a baccalaureate nursing program. The secondary purpose was to determine the effects of the following variables on learning style: basic educational preparation in nursing, practice setting, and years of practice in nursing. Kolb's Learning Style Inventory and a demographic data questionnaire were administered to all registered nurse students at the beginning of their first course upon entering West Virginia University. The same tools were administered in a classroom …
The Widow In Restoration Comedy., Beverly Cardwell Debord
The Widow In Restoration Comedy., Beverly Cardwell Debord
Graduate Theses, Dissertations, and Problem Reports (ETD)
The widow appears frequently on the Restoration comic stage, and yet, almost without exception, she provokes laughter only at her own expense. In the thirty-eight comedies examined in this study, widows suffer various types of abuse, from witty derision to physical assault. However, in virtually every instance--whether in her treatment by fellow characters or in her depiction by the playwright--the widow's exploitation involves her financial situation. Moreover, this common factor is a key to understanding why widowhood, essentially tragic, became comic during the Restoration. Traditionally an unwelcome reminder of death and the power of sexuality, even before the Restoration widows …
A Study Of The Relationship Between Readability Of A Chemistry Textbook And Performance In First Year College Chemistry., Henry Steven Falkowski
A Study Of The Relationship Between Readability Of A Chemistry Textbook And Performance In First Year College Chemistry., Henry Steven Falkowski
Graduate Theses, Dissertations, and Problem Reports (ETD)
The subjects of this study were fifty-two year college chemistry students. These students were of varying majors enrolled at Potomac State College of West Virginia University at Keyser, West Virginia. The following hypotheses were tested using post-test procedures. (1) There will be a positive correlation between the scores on a commercially available standardized general reading test and the final chemistry grade. (2) There will be a positive correlation between the mean scores on special chemistry reading tests and final chemistry grades. (3) There will be a positive correlation between the standardized general reading test scores and the average test scores …
Composite Operational Amplifiers And Their Applications In Active Networks, Sherif N. Michael-Nessim
Composite Operational Amplifiers And Their Applications In Active Networks, Sherif N. Michael-Nessim
Graduate Theses, Dissertations, and Problem Reports (ETD)
A new general approach is presented for extending the useful operating frequencies of; linear active networks in general, inverting integrators, finite gain amplifiers, and active filters in particular, realized using Operational Amplifiers (OA). This is achieved by replacing each OA in the active network by a Composite Operational Amplifier (CNOA), constructed using N OA's. The technique of generating the CNO's for any given N is proposed. The realizations, employing the CNOA's generated, are examined according to a stringent performance criterion satisfying the important properties such as extended bandwidth, stability with one and two pole OA model, low sensitivity to the …
Using Preschool Peers To Teach And Facilitate The Generalization Of Decreases In Aggressive Play., Grace R. Kalfus
Using Preschool Peers To Teach And Facilitate The Generalization Of Decreases In Aggressive Play., Grace R. Kalfus
Graduate Theses, Dissertations, and Problem Reports (ETD)
The present study examined the effectiveness of a preschool peer mediator to facilitate generalization of social behavior change. Previous research has shown peers to be effective mediators in treatment programs, however, their efficacy as generalization facilitators is less clear. Preschool children observed to play aggressively with toys and speak in an aggressive manner were selected as subjects. The children were divided into two groups of two. The peer tutor did not engage in these aggressive behaviors. Peer tutor training consisted of discussion, role play, modeling, praise, and physical affection. A peer tutoring procedure in which the peer tutor delivered instructions, …
Arsenite In Soils: Analytical Determination, Sorption-Desorption Reactions And Sorption Kinetics (Elevich Equation, Differential Pulse, Polarography)., Elsayed Ahmed Elkhatib
Arsenite In Soils: Analytical Determination, Sorption-Desorption Reactions And Sorption Kinetics (Elevich Equation, Differential Pulse, Polarography)., Elsayed Ahmed Elkhatib
Graduate Theses, Dissertations, and Problem Reports (ETD)
A technique was developed for the determination of total arsenic (As) in soil using differential pulse polarography. Soil samples were digested with a combination of HNO(,3) and H(,2)SO(,4). Total As was determined in M HCl after reduction of As(V) to As(III) with hydrazine sulfate. Soil and fly ash standards were analyzed by this method and agreement within one standard deviation between replicates was obtained. Approximately 99% recovery of As was obtained from spiked soil samples. Differential pulse polarography is also quite useful for the rapid determination of arsenite in solution during studies of As sorption - desorption by soils. A …