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Full-Text Articles in Entire DC Network
Developing A Framework For Predicting The Impact Of Its/Cvo Technology In Developing Countries, Mazen Turk
Developing A Framework For Predicting The Impact Of Its/Cvo Technology In Developing Countries, Mazen Turk
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study focuses on freight mobility in developing countries. System improvements depend on state of the art technologies to be deployed in the Transportation Infrastructure. Intelligent Transportation Systems and Commercial Vehicle Operation technologies (ITS/CVO) although a significant investment, offer many improvement alternatives. This study develops a framework for predicting the impact of new technologies on the global transportation system in developing countries. This is done in an effort to reduce cost and improve safety, efficiency and level of service.;The task will be divided into three sections. The first will entail looking at prediction from a global perspective. This will specify …
Substrate Cleaning Using A Remote Hydrogen Rf-Plasma, Srinivasan Prasanna
Substrate Cleaning Using A Remote Hydrogen Rf-Plasma, Srinivasan Prasanna
Graduate Theses, Dissertations, and Problem Reports (ETD)
The substrates (wafers) used in semiconductor processing have a surface oxide layer (the so-called native oxide layer) and a hydrocarbon contamination layer that must be removed before growing an epitaxial film of good quality. In this work, low temperature remote rf-hydrogen plasma cleaning of II-VI and silicon semiconductor surfaces was investigated as a preparation for subsequent deposition in molecular beam and gas source molecular beam epitaxy environments. The plasma was characterized using mass spectrometric methods to determine the identity and relative fluxes of ionic and neutral species and to determine the kinetic energies of the ionic species. Etching studies were …
Youth Leadership Life Skills Development Of Participants In The West Virginia 4-H Camping Program, Rebecca Diane Duncan
Youth Leadership Life Skills Development Of Participants In The West Virginia 4-H Camping Program, Rebecca Diane Duncan
Graduate Theses, Dissertations, and Problem Reports (ETD)
Although the development of leadership skills through the 4-H camping program is highly valued, measurement of leadership skill development of West Virginia 4-H camping program participants has been lacking. Thirteen to fifteen year old 4-H members were targeted in this study in order to gather data about leadership development among this age group.;Significant relationships were found between the total YLLSDS score and years of participation in county camp and receiving the Spirit of Camp Award. Participants also reported higher leadership scores if they had served as a Chief or Sagamore of their 4-H tribe, if they were female, and if …
Smart Card-Enabled Security Services To Support Secure Telemedicine Applications, Monoreet Mutsuddi
Smart Card-Enabled Security Services To Support Secure Telemedicine Applications, Monoreet Mutsuddi
Graduate Theses, Dissertations, and Problem Reports (ETD)
The Internet is quickly evolving into a standard and widely used mode of information transfer. Therefore internet's information transfer capabilities could be exploited by Secure Telemedicine Applications to securely transfer medical information. However the current day internet protocol stack does not provide much in terms of security for the data being transferred across it. In this thesis we explore how Cryptography along with Smart Cards can be used to implement application layer protocols, to enhance the security of data flowing across the internet in a Secure Telemedicine environment. This thesis also discusses the design and implementation of various system software …
Secure Telemedicine System For Home Health Care, Sridhar Vasudevan
Secure Telemedicine System For Home Health Care, Sridhar Vasudevan
Graduate Theses, Dissertations, and Problem Reports (ETD)
This thesis describes a low-cost telemedicine system that provides home based patient care by linking patients with skilled nurses at the home care agency. The system employs compact vital signs sensors and a two-way real-time video conference over telephone lines. It stores the patient's medical records, still images and enforces clinical pathways during the televisits. Physicians, paramedics, and nurses can then have access to these records from anywhere, securely, through a Web browser.;This document discusses the underlying technologies, the features implemented in the prototype, and the methodologies used in developing the software. The prototype uses the Enterprise Java Bean [EJB] …
Aspects Of Attention That Affect Compliance And General Behavior In Disruptive And Typical Children, Holly Ann Filcheck
Aspects Of Attention That Affect Compliance And General Behavior In Disruptive And Typical Children, Holly Ann Filcheck
Graduate Theses, Dissertations, and Problem Reports (ETD)
Currently, there is some controversy concerning whether praise affects compliance and behavior other than compliance (i.e., general behavior) in children with disruptive behaviors. It is unclear whether it is praise or other aspects of general attention, such as descriptions and enthusiasm, that influences children's behavior. The current study examined the effects of enthusiastic praise, non-enthusiastic praise, and non-enthusiastic description on child compliance (measured by the Compliance Test) and general behavior (measured by the Marble-in-the-Hole Game) in 15 children with disruptive behavior problems and 15 typical children. Results indicated that the participants had significantly higher rates of compliance in the non-enthusiastic …
Magnetic Properties Of Silicon-Doped Ferrihydrite Nanoparticles., Paromita Roy
Magnetic Properties Of Silicon-Doped Ferrihydrite Nanoparticles., Paromita Roy
Graduate Theses, Dissertations, and Problem Reports (ETD)
The magnetic properties of nanosized (3-5nm) Si-doped two line ferrihydrites, Six /FeOOH.nH2 O where x = 0, 0.02, 0.05, 0.1, 0.15, 0.20, 0.26, 0.40, 0.50 have been investigated here. The experiments conducted include temperature(5K – 300K) and magnetic field(upto 55 kOe) variations of magnetization under zero field cooled and field cooled conditions. The quantities determined are the magnetic moment per particle mp , the temperature Tp (m) at which magnetization peaks, the spin glass order transition temperature Tg and the hysteresis loop parameters (coercivity Hc , remanence Mr and saturation magnetization Ms (H ® 0)). The dramatic changes observed in …
The Influence Of Participation In Secondary Agriculture Activities On Post-Secondary Pursuits Of Agriculture Students In West Virginia., Harold Daniel Junkins
The Influence Of Participation In Secondary Agriculture Activities On Post-Secondary Pursuits Of Agriculture Students In West Virginia., Harold Daniel Junkins
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of the study was to provide information on the influence of agriculture activity participation on the pursuits of secondary agriculture students in West Virginia. Data were collected via questionnaires. The questionnaires consisted of three parts: (a) demographic data; (b) post-secondary status; and (c) grade performance and agriculture activities participation. Participation levels were determined by combining scores received in SAEP, technical agriculture competitions and leadership activities. Post-secondary status was grouped by education in the field of agriculture and non-agriculture, employment in agriculture and non-agriculture, unemployment, and military service. Students who scored higher in participation level were more apt to …
Production Of Urban Space In Kenya: Central-Local Government Power Relations In Mediating Space In Athi River Town., Francis Tama Koti
Production Of Urban Space In Kenya: Central-Local Government Power Relations In Mediating Space In Athi River Town., Francis Tama Koti
Graduate Theses, Dissertations, and Problem Reports (ETD)
Centrally controlled political and economic systems are popular among Third World countries. They however, become problematic particularly in rapidly growing urban areas where different forces compete for scarce resources, hence calling for an understanding of the nature of the relationships between the different forces that produce the urban environment. In Kenya, the basic assumption is that urban space is mediated by the local state. The author uses Athi River town, as a case study, through which survey questionnaires and informal interviews are conducted with key personnel of Mavoko Municipal Council on one hand, and central government ministries operating within the …
Toward Improving The Paper Map: Exploring And Implementing Digital And Virtual Campus Maps For West Virginia University., Thomas Luke Ritz
Toward Improving The Paper Map: Exploring And Implementing Digital And Virtual Campus Maps For West Virginia University., Thomas Luke Ritz
Graduate Theses, Dissertations, and Problem Reports (ETD)
This research examines significant design and map development issues in development of digital and virtual campus maps for West Virginia University. The theoretical frameworks of traditional cartography and digital mapping technologies reveal the interconnections between the elements of good map design and the complexities of mapping in the digital environment. The development of the campus maps for this research are part of a project that represents a working agreement between West Virginia University and the West Virginia State GIS Technical Center. Background information on the campus map project is presented to place the project in context and to illustrate the …
The Effects Of Acceptance Versus Control Contexts On Avoidance Of 7% Carbon Dioxide-Enriched Air In Highly Anxious Females., Michelle P. Heffner
The Effects Of Acceptance Versus Control Contexts On Avoidance Of 7% Carbon Dioxide-Enriched Air In Highly Anxious Females., Michelle P. Heffner
Graduate Theses, Dissertations, and Problem Reports (ETD)
Avoidance is a core problem among patients with panic and other anxiety disorders that is often targeted in treatment. The present study compared the effects of acceptance versus control therapeutic contexts on avoidance of an aversive interoceptive stimulus in a controlled laboratory setting. Previous research has demonstrated the ironic and paradoxical effects of control-oriented strategies. Therefore, it was hypothesized that acceptance strategies will be more useful in the reduction of avoidance. Sixty high-anxious females were exposed to carbon-dioxide enriched air, an anxiety analogue, and assigned to either a control-context, acceptance-context, or no instruction condition. The context of acceptance was explained …
Chicken Lysine α-Ketoglutarate Reductase (Lkr) In Different Tissues And Effects Of Graded Levels Of Dietary Lysine On Lkr And Lysine Oxidation., Megharaja Kandagal Manangi
Chicken Lysine α-Ketoglutarate Reductase (Lkr) In Different Tissues And Effects Of Graded Levels Of Dietary Lysine On Lkr And Lysine Oxidation., Megharaja Kandagal Manangi
Graduate Theses, Dissertations, and Problem Reports (ETD)
To understand tissue participation in lysine oxidation, chicken lysine α-ketoglutarate reductase (LKR) activity and lysine oxidation (LOX) were measured in vitro. LKR activity was measured using a spectrophotometer and LOX was measured by collection of 14CO2 from [U-14C] L-lysine. LKR and LOX were measured in homogenates prepared from liver, kidney, pancreas, heart, brain, lungs, spleen, muscle, and intestine. LKR activities were 1000-fold LOX. LKR activity was highest in liver and intestine each approximately 63 µmoles/(hr*g tissue). Activity in other tissues was significantly greater than zero except for muscle. Muscle, liver, and intestine contributed about 70%, 15% and 6.5% respectively of …
A Hydrodynamic Model Of Semiconductors., Sixin Qian
A Hydrodynamic Model Of Semiconductors., Sixin Qian
Graduate Theses, Dissertations, and Problem Reports (ETD)
We study the three dimensional simplified hydrodynamic model of semi-conductors where the equations of energy conservation are eliminated by assuming a pressure-density relation. The system is a combination of three hyperbolic equations coupled with an elliptic one. We prove the linear stability and the existence of local classical solutions to the initial boundary value problem for this system. The Neumann condition corresponds to an insulated boundary. Because a compatible condition is required in solving the Neumann BVP (Boundary Value Problem), a special iteration scheme is introduced to handle this situation. Based on the existence of the classical solutions to this …
An Examination Of The Relationship Between Childhood Sexual Abuse, Dissociation, And Eating Disorders., Patricia Marie Bailey
An Examination Of The Relationship Between Childhood Sexual Abuse, Dissociation, And Eating Disorders., Patricia Marie Bailey
Graduate Theses, Dissertations, and Problem Reports (ETD)
Researchers have documented a high percentage of eating disordered individuals with a history of traumatic experiences such as childhood sexual abuse (Abramson & Lucido, 1991; Oppenheimer, Howells, Palmer, & Chaloner, 1985; Tice, Hall, Beresford, Quinones, & Hall, 1989). To what extent these adverse life events may contribute to the onset, maintenance, and severity of maladaptive eating behaviors is widely debated among researchers and clinicians. The present study attempted to identify a spectrum of potentially traumatic life experiences in eating disordered individuals and their relationship with dissociation and eating pathology. Thirty-four female subjects meeting DSM-IV criteria for Bulimia Nervosa (n = …
A Comparison Of The Profiles Of Successful And Unsuccessful Candidates For College Presidencies In The State College System Of West Virginia., Marie Ellen Carter
A Comparison Of The Profiles Of Successful And Unsuccessful Candidates For College Presidencies In The State College System Of West Virginia., Marie Ellen Carter
Graduate Theses, Dissertations, and Problem Reports (ETD)
Candidates (N = 609) for six presidencies in the State College System of West Virginia between 1995 and 1998 were studied and a comparison was made between successful candidates (n = 93) and unsuccessful candidates (n = 516). Successful candidates were defined as those who were judged by the search and screening committees to be best qualified to be interviewed. Candidate application packets and search committee records were the source of data. Independent variables included positions held by candidates at the time of application, baccalaureate graduation dates, education levels, major fields of graduate study, gender, and locations at the time …
The Effects Of On-Line Course Development, Prior Computer Experience, And Learning Style On Developers' Attitudes And Performance., James Takacs
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study examined the effects of learning style, prior computer experience, and a 15-week, on-line development course on developers' attitudes and performance before, during, and after the instruction. The treatment, prior computer experience, and developers' learning style were used as the independent variables. Responses from the stages of concern instrument and final project performance scores were used as the dependent measures. Simple regressions and ANOVAs were used to determine whether any effects or relationships existed among the variables. The results of this study show no significant effects found in the relationship of learning style on developers' on-line course development performance …
The Usefulness Of Admission Data As A Predictor Of Completion Of An Associate Degree Nursing Program., Shelia Marie Kyle
The Usefulness Of Admission Data As A Predictor Of Completion Of An Associate Degree Nursing Program., Shelia Marie Kyle
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this descriptive study was to examine whether or not selected variables used in the admission process can predict and the extent to which they can predict whether or not the student will graduate from an associate degree nursing program. The independent variables for this study were: Licensed Practical Nurse (LPN), number of courses completed prior to beginning the nursing program, the pre-admission Grade Point Average (GPA), the number of science courses completed pre-nursing, the number of courses repeated to earn a grade of C or better pre-nursing, and the number of hours transferred from other institutions of …
A Study Of Mentoring And The Acquisition Of The Elementary Principalship., Lorraine Weisser Hall
A Study Of Mentoring And The Acquisition Of The Elementary Principalship., Lorraine Weisser Hall
Graduate Theses, Dissertations, and Problem Reports (ETD)
This research employed a one-shot case study design to examine the relationship between the dependent variable, acquisition of the initial elementary principalship position, and several independent variables. Independent variables included the presence or lack of professional mentoring; the type of mentoring received by proteges; the gender of the mentor and protege; the perceived impact of mentoring, dependent upon the method of establishment of the relationship; and the career path of respondents. Additionally, the study examined the relationship between having been a protege and the tendency to mentor others. To examine these relationships, the Mentoring and the Elementary Principalship Survey was …
The Effects Of Fearful Responding Of Arithmetic Performance., Derek Richard Hopko
The Effects Of Fearful Responding Of Arithmetic Performance., Derek Richard Hopko
Graduate Theses, Dissertations, and Problem Reports (ETD)
Although anxiety-related responding and skill deficits have historically been associated with performance-based problems such as high mathematics anxiety, the relative contributions of these variables to substandard performance remains poorly understood. Utilizing a 7% carbon dioxide gas mixture to induce fear, the present study was designed to determine the impact of fear-related responding to cognitive task performance. Independent variables included anxiety group, gender, and gas condition. Dependent variables included behavioral, physiological, and self-report indices. A total of 64 university undergraduate students participated in the study. High and low math anxious individuals were randomly assigned to either a carbon dioxide or control …
A Qualitative Analysis Of The Socialization Factors Experienced By Induction Phase Physical Education Teachers From One University., Derek Jason Mohr
A Qualitative Analysis Of The Socialization Factors Experienced By Induction Phase Physical Education Teachers From One University., Derek Jason Mohr
Graduate Theses, Dissertations, and Problem Reports (ETD)
A topic of considerable interest in the educational research community is the process of learning to teach and the role that socialization plays in that process. Numerous educational researchers have focused their attention on examining these processes (e.g., Doyle, 1985; Graham, French, & Woods, 1993; Lawson, 1988; Schempp & Graber, 1992). Recent investigative approaches have attempted to broaden the perspective for viewing and interpreting teacher development, and socialization factors in addition to field experiences and student teaching have been examined (Graham, Hohn, Werner, & Woods, 1993; Widden, Mayer-Smith, & Moon, 1998; Woods & Earls, 1995). The purpose of this study …
A Study Of The Relationship Between The Perceived Leadership Style Of Nursing Chairpersons And The Organizational Climate In Baccalaureate Nursing Programs., Nancy Rowland Mosser
A Study Of The Relationship Between The Perceived Leadership Style Of Nursing Chairpersons And The Organizational Climate In Baccalaureate Nursing Programs., Nancy Rowland Mosser
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study examined the relationship between the leadership frames of nursing chairpersons and the organizational climate of nursing departments as perceived by the nursing faculty. Bolman and Deal's Leadership Orientations Instrument (Other), Borrevik's Organizational Climate Description Questionnaire-Higher Education (Partial), and a demographic questionnaire were sent to 605 nursing faculty members in 60 baccalaureate nursing programs in the American Association of Colleges of Nursing North Atlantic Region. A total of 253 usable responses was returned. Descriptive procedures, Pearson's product moment correlation coefficients, one-way analysis of variance, and the General Linear Models Procedure for analysis of variance were used to analyze the …
Where The Stranger Bides: Resisting America With The Autobiographical Word., Lisa N. Muir
Where The Stranger Bides: Resisting America With The Autobiographical Word., Lisa N. Muir
Graduate Theses, Dissertations, and Problem Reports (ETD)
The recent republication of the works of Anzia Yezierska and Rose Cohen, as well as the first ever publications of the autobiographies of Bella Spewack and Rachel Cohen, demonstrate the current interest in the autobiographical experiences of turn-of-the-century female immigrant writers. These women were not politicos of the Progressive Era, nor were they literary revolutionaries in the stricter sense of writing against a patriarchal literary environment. Instead, these women pay particular attention to how ethnicity was constructed for them by cultural attitudes existing outside the text. Their autobiographical works confirm for the diverse readers of today that ethnicity is not …
Paradoxical Interventions With Severe Conduct-Disordered Adolescents: Research Of Treatment Effectiveness., Marsha Anne Mills
Paradoxical Interventions With Severe Conduct-Disordered Adolescents: Research Of Treatment Effectiveness., Marsha Anne Mills
Graduate Theses, Dissertations, and Problem Reports (ETD)
Paradoxical interventions are therapeutic techniques in which the therapist appears to promote the worsening or continuation of the problem rather than its removal. The objective of this treatment is to lessen or eliminate the problematic behavior through the unusual means of encouraging it. Only two previous studies have empirically evaluated these techniques with resistant and defiant youths; those results suggested that paradoxical interventions may be effective with severely conduct-disordered adolescents. This study applied the techniques of symptom scheduling and restraining with three conduct-disordered adolescents residing in a therapeutic group home. The experimental design was a nonconcurrent multiple baseline across participants; …
Dynamic Behavior Characterization Of Fine Powders Consisting Of A Homogeneous Emulsion, And, Synthesis And Decomposition Of Methane Gas Hydrate: A Reaction Engineering Study., Sridhar Narasimhan
Dynamic Behavior Characterization Of Fine Powders Consisting Of A Homogeneous Emulsion, And, Synthesis And Decomposition Of Methane Gas Hydrate: A Reaction Engineering Study., Sridhar Narasimhan
Graduate Theses, Dissertations, and Problem Reports (ETD)
This work quantitatively characterizes the flow and mixing properties of aerated bulk fine powders between the minimum fluidization and minimum bubbling velocities (Umf < U < Umb). In order to accomplish this characterization, the viscosity of the emulsion phase was measured using the Maxwell’s model for the rheological behavior of complex bodies along with the set of rheological parameters proposed by Kono et al (1994). A unique property of the bulk fine powder called the relaxation time (t) was measured experimentally and this property was combined with another rheological parameter called the plastic deformation coefficient (Y) to give the viscosity of the emulsion phase as m = Yt. SECTION II This work describes the first homogeneous formation and decomposition of methane gas hydrates within several different synthetic sediments by using a highpressure batch reaction system. The pressure of the formation reaction was varied in the range of 6.8 – 13.6 MPa while the temperature was maintained constant at 273.5 K Decomposition of hydrate was accomplished through controlled depressurization starting at a pressure of 2.7 MPa, maintaining the temperature constant at 273.5 K. Overall reaction order, both for the formation and decomposition were also determined.
The Effects Of Supported Employment Level On The Psychosocial Experiences Of Integrated Workers With Mental Retardation., Jennifer L. Schwartz-Mitchell
The Effects Of Supported Employment Level On The Psychosocial Experiences Of Integrated Workers With Mental Retardation., Jennifer L. Schwartz-Mitchell
Graduate Theses, Dissertations, and Problem Reports (ETD)
Supported employment approaches may have a significant impact on the Psychosocial experiences of workers with mild and moderate mental retardation. The present study examined the influence of supported employment level (i.e., individual vs. group) on the depression, loneliness, and lifestyle satisfaction of employees participating in a vocational rehabilitation program. It was hypothesized that supported employment level differences would be reflected in the dependent variables of depression, loneliness, and lifestyle satisfaction reported by participants (N = 54). Additional predictions were made about relationships between these dependent variables and measures of social support and social skills. Supported employment level differences on depression, …
The Development And Validation Of Science Learning Inventory (Sli): A Conceptual Change Framework., Mehdi Seyedmonir
The Development And Validation Of Science Learning Inventory (Sli): A Conceptual Change Framework., Mehdi Seyedmonir
Graduate Theses, Dissertations, and Problem Reports (ETD)
A multidimensional theoretical model, Conceptual Change Science Learning (CCSL), was developed based on Standard Model of Conceptual Change and Cognitive Reconstruction of Knowledge Model. The model addresses three main components of science learning, namely the learner's conceptual ecology, the message along with its social context, and the cognitive engagement. A learner's conceptual ecology is organized around three clusters, including epistemological beliefs, existing conceptions, and motivation. Learner's cognitive engagement is represented by a continuum from peripheral processing involving shallow cognitive engagement to central processing involving deep cognitive engagement. Through reciprocal, non-sequential interactions of such constructs, the learners' conceptual change is achieved. …
Skeletal Muscle Injury, Fibrosis And Transforming Growth Factor-Beta., Cheryl A. Smith
Skeletal Muscle Injury, Fibrosis And Transforming Growth Factor-Beta., Cheryl A. Smith
Graduate Theses, Dissertations, and Problem Reports (ETD)
Several animal models were assessed for their ability to produce pathology with a potential for developing fibrosis. Pathology was determined using standard histochemical and immunohistochemical techniques. In a model of ethanol-induced myopathy, cytochrome p450 1A1/2 was induced in endothelial cells (i.e. capillaries) but there was insufficient pathology to produce fibrosis. Two models of overload, tenotomy of the gastrocnemius muscle and a tetanus toxin overload model showed morphological changes including: degenerating fibers, central nuclei, variable myofiber sizes, and an expansion of the extracellular matrix, but changes were non-uniformly distributed making this a poor fibrosis model. A tetanus-toxin model of repetitive strain …
Secession, War And Rebirth: The Civil War In West Virginia's South Branch Valley Of The Potomac., Stephen Garth Smith
Secession, War And Rebirth: The Civil War In West Virginia's South Branch Valley Of The Potomac., Stephen Garth Smith
Graduate Theses, Dissertations, and Problem Reports (ETD)
West Virginia's South Branch Valley of the Potomac River played a crucial, but little studied, role in the American Civil War. Writing of the August 7, 1864, Battle of Moorefield, historian Robert K. Krick has noted that it “has received far less attention than it deserves.†In this work, it will be demonstrated that not only the August 7, 1864, Battle of Moorefield, but the conflict in the region in general is deserving of in-depth study. The geographic location and the plantation culture of the South Branch Valley favored its political and economic connection to Confederate eastern Virginia. Nevertheless, with …
The Numerical Simulation Of The Flow Of An Injected Grout In Underground Room And Pillar Coal Mines., James Mark Stiles
The Numerical Simulation Of The Flow Of An Injected Grout In Underground Room And Pillar Coal Mines., James Mark Stiles
Graduate Theses, Dissertations, and Problem Reports (ETD)
This research was conducted to develop a computer program, Groutnet , to simulate the flow of a grout injected in a room and pillar coal mine. Previous rheological investigations have demonstrated that grouts composed largely of coal ash and water are Bingham fluids. Because the simulation of a large scale grout injection operation by solving the three dimensional equations of motion would be prohibitively expensive, the equations of motion were integrated in the vertical direction, and the unsteady and convective acceleration terms in the momentum equations were neglected. In order to achieve a closed set of equations, a uniform flow …
Part 1. Structure, Stability And Reactivity Of Small Organic Sulfinic And Sulfonic Acids: Toxicological Implications. Part 2. Role Of Charge Transfer Complexes In Oxidative Cleavage Of Benzpinacols By Iron(Iii) Trisphenanthroline., Serge Alex Svarovsky
Graduate Theses, Dissertations, and Problem Reports (ETD)
Part 1. Structure, stability, and mechanisms of oxidation and hydrolysis of a number of thiourea-S-oxides (thiourea dioxide; N-methylthiourea dioxide; N,N′-dimethylthiourea dioxide; thiourea and N,N′-dimethylthiourea trioxides; and sodium hydroxymethanesulfinate) have been investigated by means of UV-VIS, stopped-flow; X-ray crystallography; molecular calculations; ESR; NMR; and oxygen consumption studies. It was found that oxidation of thioureas does not always proceed through the generally accepted successive addition of oxygen atom to the sulfur center. Instead, thiourea dioxides appear to be the major end product in these oxidations. Mechanism of hydrolysis of thiourea dioxides in basic media reveals complex chemical kinetics which involves initial heterolytic …