Digital Commons Network^™

Synthesis And Use Of Chiral Surfactants., Xiaoye Yang

Electronic Theses and Dissertations

It has been previously shown that micelles formed from surfactants with chiral head groups serve to induce a chiral reaction medium, leading to enhanced enantioselectivities in the reaction products. This utilization of chiral surfactants will offer an economical alternative to traditional chial solvents while simultaneously reducing organic waste. We have successfully dimethlated S-leucinol in an 85% yield, and have synthesized a hydrocarbon-based surfactant with this molecule as a head group. We have also formed polymeric surfactants that have polydimethylsiloxane as the hydrophobic portion with the (S)-dimethylleucinol as a head group. Tests of the solubility of these surfactants have been conducted. …

Figurative Sculpture In Paper Clay., Valarie G. Lyle

Electronic Theses and Dissertations

The artist discusses her Master of Fine Arts exhibition at East Tennessee State University, Carroll Reece Museum, Johnson City, Tennessee, March 9 - 17, 2001. The exhibition marked her return to organic, gestural work. Works are figurative, ceramic, sculpture, made of paper clay, ranging from 8-inch, wall mounted, bas-relief to life sized, full round figures. Most are slab constructed, unglazed or lightly glazed with soda wash.

Topics discussed: the artist's development, including the influences of Stephen De Staebler, in his treatment of the individual in mass culture, and of Mary Frank, in psychological content and in the use of negative …

The Drug Scourge As A Hemispheric Problem, Barry R. Mccaffrey General

Books, Monographs & Collaborative Studies

Former Drug Czar General Barry McCaffrey, USA (Retired) argues that Colombia s 40 million citizens must not be deserted by their neighbors. Leaving the Colombians to deal in isolation with a pervasive drug problem will deeply affect all 800 million of us in the Western Hemisphere through addiction, violence, and corruption. Moreover, he argues that the United States and the entire international community must support a long-term commitment to Plan Colombia and to building cooperative multinational approaches to the tough drug-associated problems that face us all. This is an undertaking in which we all have an equal stake and an …

Jihadi Groups, Nuclear Pakistan, And The New Great Game, M. Ehsan Ahrari Dr.

Books, Monographs & Collaborative Studies

For the United States and other nations concerned with security in South and Central Asia, one of the most ominous trends has been the growing influence of Jihadist groups in Pakistan which feel obligated to wage holy war against everything that they perceive as non-Islamic. Their objective would be a Pakistani government similar to the Taliban regime in Afghanistan. The danger this would pose to regional stability and U.S. interests is clear. The author assesses Jihadi groups from the framework of a new "Great Game" for influence in Central Asia involving an array of states. He argues that, if this …

Effect Of Surface Roughness On Heat Transfer And Fluid Flow Characteristics At Low Reynolds Numbers In Small Diameter Tubes, Shailesh Joshi

Theses

The effect surface roughness on pressure drop and heat transfer in circular tubes has been extensively studied in literature. The pioneering work of Nikuradse (1933) established the sand grain roughness as a major parameter in defining the friction factor during laminar and turbulent flows. Recent studies have indicated a transition to turbulent flows at Reynolds number values much below 2300 during single-phase flow in channels with small hydraulic diameters. In the present work, a detailed experimental study is undertaken to investigate the roughness effects in small diameter tubes. The roughness of the inside tube surface is changed by acid treatment. …

August 2001 Commencement Program, Bowling Green State University

Commencement Programs

No abstract provided.

The 2001 Sandra Day O'Connor Medal Of Honor Recipient - Greta Van Susteren

Seton Hall Journal of Legislation and Public Policy

No abstract provided.

Post-Tillage Dynamics Of Soil Structural And Hydraulic Properties Induced By Capillary Forces And External Loading, Teamrat Afewerki Ghezzehei

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Tillage modifies the soil structure to create conditions favorable for plant growth. However, the resulting loose structure is susceptible to collapse by internal capillary forces and external compactive stresses with concurrent changes in soil hydraulic properties. Presently, limited understanding of these complex processes often leads to consideration of the soil plow-layer as a static porous medium. The objective of this dissertation was to develop physically based modeling of soil structural dynamics at the pore scale, based on soil mechanical and rheological properties. The basic geometrical framework of the models was based on regular packing of monosized spherical aggregates forming unit-cells. …

Tractor Driving Among Kentucky Farm Youth: Results From The Farm Family Health And Hazard Surveillance Project, Steven R. Browning, Susan C. Westneat, Raeanne Szeluga

Epidemiology and Environmental Health Faculty Publications

This article documents the extent of children's involvement in tractor operations among a representative sample of Kentucky children living and working on family farms. Specifically, we describe children's exposures to tractor-related work activities, profile their use of the tractor (number of days worked), and assess compliance with generally recommended safety measures, such as using tractors equipped with ROPS (rollover protective structures), avoiding riding as passengers on tractors, and operating tractors on public roadways. Data for this study were collected in 1994 and 1995 as part of the NIOSH-sponsored Farm Family Health and Hazard Surveillance Project (FFHHSP). Despite recognition in the …

The Spinnaker Vol. 25, No. 1, University Of North Florida

Spinnaker

Student newspaper for the UNF community

Human Factors Survey Of Aviation Technical Manuals, Phase 1: Manual Development Procedures, Alex Chaparro, Loren S. Groff

Publications

This report contains the results from Phase 1 of a three-phase research effort. Phase 1 examines aviation industry procedures for developing maintenance technical data. Phase 2 will document user problems with maintenance technical data. Phase 3 will identify maintenance technical data development improvements by applying human factors principles. Five aircraft manufacturers were surveyed regarding company policy, communication, data tracking, user feedback, and error reduction efforts. The five industry participants represent both regional and large commercial transport manufacturers. Phase 1 survey results revealed three significant maintenance technical data issues: inconsistent development process guidelines, reactive rather than proactive response to user feedback, …

Oscar Wilde: Constructing The Self, Elisabeth Erin Pankl

Electronic Theses and Dissertations

This thesis examines Oscar Wilde's construction of the self. Three major aspects of Wildean literary work serve as handles for this thesis examination. They are the Wildean interpretation of theoria, Wilde's literary technique and philosophical assertion of masks and poses and Wilde's favor of the social dandy.

In addition to these three aspects, this thesis utilizes four of Wilde's works as primary sources. These are The Pictureo f Dorian Gray, The Importance of Being Earnest, "The Decay of Lying," and "The Critic as Artist."

Like most current critiques of Wilde, this thesis relies on many of the reading strategies of …

Visual Iconic Object-Oriented Programming To Advance Computer Science Education And Novice Programming, Nancy Silva Martinez

Theses and Dissertations - UTB/UTPA

Learning how to program a computer is difficult for most people. Computer programming is a cognitively challenging, time consuming, labor intensive, and frustrating endeavor. Years of formal study and training are required to learn a programming language's world of algorithms and data structures. Instructions are coded in advance before the computer demonstrates the desired behavior. Seeing all the programming steps and instruction code is complicated. There exists a tremendous gap between the representations the human brain uses when thinking about a problem and the representations used in programming a computer. Often people are much better at dealing with specific, concrete …

August 1, 2001, The Daily Mississippian

Daily Mississippian (all digitized issues)

No abstract provided.

Graduate Programs In Nonprofit Administration: A Review Of The Roots Of Program Variability, Rebecca Murphy Marton

Master's Theses

Nonprofit management (NPM) education is a relatively new and dynamic academic field with the first programs established in the early 1980s. These programs have developed and multiplied with very little research in the field providing guidance in designing curricula or focusing on what skills are needed to manage a nonprofit organization.

Because degrees in nonprofit management (NPM) are granted by a variety of different schools, this paper attempted to assess the variability in curricular design that might occur as a result of this variability. The hypothesis tested was that the school of origin for a NPM program determines the content …

Thinness In Women: The Impact Of Female Body Weight On Relationship Satisfaction And Commitment, Wendy Walter Campbell

All-Inclusive List of Electronic Theses and Dissertations

The current study represents an investigation of the impact of weight change on romantic relationships, and the hypothesized gender difference in the importance assigned to a partner's weight. Participants were 221 undergraduate students (148 women and 73 men) from a medium sized Midwestern University. Participants were randomly assigned to one of three conditions in which their weight in a photo image was increased, decreased or left unchanged. Upon inspecting the image, participants were asked to complete measures of relationship satisfaction and commitment (including among others, items from the Dyadic Adjustment Scale [DAS]), the Kansas Marital Satisfaction Scale [KMSS], as well …

The Role Of The Internet In Chinese Foreign And Domestic Affairs, Jean Bowman Leedy

Graduate Program in International Studies Theses & Dissertations

Problem: Rapid dissemination of Internet technology and the free access to information it affords poses a threat to non-democratic states that rely on control of information to maintain power and stability. This is of substantial concern to the Communist regime in The People's Republic of China due to the fact that its repressed population constitutes the fastest growing body of Internet users in the world.

Methods: This paper examines the potential impact of the Internet on Chinese foreign and domestic policy through interpretation of existing literature as it applies to the Internet, interviews with experts studying the emergence of China's …

The Drug Scourge As A Hemispheric Problem, Barry R. Mccaffrey General

Books, Monographs & Collaborative Studies

Former Drug Czar General Barry McCaffrey, USA (Retired) argues that Colombia s 40 million citizens must not be deserted by their neighbors. Leaving the Colombians to deal in isolation with a pervasive drug problem will deeply affect all 800 million of us in the Western Hemisphere through addiction, violence, and corruption. Moreover, he argues that the United States and the entire international community must support a long-term commitment to Plan Colombia and to building cooperative multinational approaches to the tough drug-associated problems that face us all. This is an undertaking in which we all have an equal stake and an …

Electrochemical Characterization Of The Effects Of Impurities And Organic Additives In Lead Electrowinning From Fluoborate Electrolyte, Puqiang Zhang, Thomas J. O'Keefe, Pu Yu

Materials Science and Engineering Faculty Research & Creative Works

The effects of glue and calcium lignin sulfonate additives, and chloride and antimony impurities on the lead electrowinning process, using a fluoborate electrolyte, were studied. Short-term deposition tests, voltammetry, electrochemical impedance spectroscopy (EIS) and SEM techniques were used for the evaluation. The interactions among additives and impurities were also evaluated. The presence of antimony or chloride ion in the range of 50 to 200 mg/L was shown to cause a more dendritic and powdery lead deposit. Additions of glue and calcium lignin sulfonate at selected concentrations helped to level the deposit and counteracted the detrimental effects of chloride and antimony. …

Numerical Model For Determining The Wetting Front In A Clay Layer Of A Leaking Composite Barrier, Mustafa Eftelioglu

Graduate Theses, Dissertations, and Problem Reports (ETD)

Composite barriers for hazardous and solid waste landfills are designed to minimize hydraulic transport of the contaminant leachate of the landfill; however, the geomembrane can be damaged during construction or otherwise contain imperfections from manufacturing. It is desirable to estimate the discharge characteristics and the flow width of such a leachate should leaks in the geomembrane occur.;Numerical solutions of the flow equations for unsaturated soil barriers can provide an understanding of the movement of a leachate through a composite barrier. The purpose of this investigation was to develop a computer model that simulated two-dimensional migration of leachate beneath holes in …

Transport And Utilization Of Arginine And Arginine-Containing Peptides By Rat Alveolar Macrophages, Xiaodong Yang

Graduate Theses, Dissertations, and Problem Reports (ETD)

Purpose. To demonstrate that alveolar macrophages (AM) from rats exhibit pepT1-like transporter for the uptake of small arginine-containing peptides (ACPs) and utilized these peptides as direct substrates for nitric oxide (NO) production.;Method. A HPLC assay was developed for quantitative measurement of Arg and ACPs in rat plasma and bronchoalveolar lavage (BAL) fluid. The uptake of small peptides by rat AM was evaluated using fluorescein isothiocynate (FITC)-labeled (*) peptides (Arg-Lys*, beta-Ala-Lys*, and Gly-Sar-Lys*), HPLC analysis of potential peptide degradation, and known inhibitors on arginine (Arg) and PepT1 transport. NO production by AM through Arg and ACPs was studied with and without …

Higher Order Chromatin Degradation Induced By Hydrogen Peroxide In Glial Cells, Raymond Mouzannar

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study addresses the genotoxicity of oxidative stress. We induced oxidative stress in cultured rat oligodendrocytes by exposure to hydrogen peroxide (H2O2). Intact genomic DNA was isolated by agarose embedding and its fragmentation was assessed by field inversion gel electrophoresis (FIGE). To detect single strand fragmentations, the DNA was digested with S1 nuclease before FIGE. We found that the exposure of oligodendrocytes to pathological concentrations of H2O2, induces a rapid digestion of nuclear chromatin in a pattern consistent with higher order chromatin degradation (HOCD). HOCD, the hallmark of programmed cell death (PCD), proceeds through single strand scissions that accumulate at …

Drudgery To Grace: A Philosophy Of Aesthetics, Daniel Jennings

Theses

Not Included

Dynamic Torsional Modeling And Analysis Of A Fluid Mixer, Joel Berg

Theses

Mixers and agitators are used in a variety of processing industries. Each application has its own uniqueness requiring a high degree of customization in process design and mechanical design. Many of the processing and mechanical performance characteristics of mixers are derived from torque cell and tachometer measurements usually located between the motor and speed reducer. This thesis deals with the development of a dynamic modeling and analysis procedure to simulate the torsional response of mixers. This procedure will allow for the characterization of the torsional response at any point within the system, as well as relate the response as observed …

By Now You Know, Mary Johnstone

Theses

None provided.

Two And Four Component Polyimides Based On Oxydiplithalic Anhydride, 1,3-Aminophenoxybenzene, Mellitic Acid Dianhydride, 3,4'-Oxydianiline, And Their Zirconium Pendent Polymers, Wei Cheng

Theses

The goals of this research are to synthesize novel two and four-component pendent polyimides by attaching the zirconium complex to the respective polymer backbones, and then to compare their characteristics, e.g. thermal properties, atomic oxygen resistance, and film properties, with those of previous students of Dr. Illingsworth, Derek Chow and Wei Wang. Our work focuses on increasing the atomic oxygen resistance of polyimides by increasing their pendent group concentrations. This result can best be achieved by increasing the flexibility of the polymer backbone, which also lowers glass transition temperature (Tg), improves polyamic acid solubility, and, thus, improves processibility. The novel …

2001 Safety Belt Usage Survey In Kentucky, Kenneth R. Agent, Eric R. Green

Kentucky Transportation Center Research Report

The objective of this study was to establish 2001 safety belt and child safety seat usage rates in Kentucky. The 2001 survey continues to document the results after enactment of a statewide mandatory safety belt law in 1994. It also documented the long term results of the Click It or Ticket enforcement campaign which was conducted around Memorial Day. Data were collected at 200 randomly selected sites spread across Kentucky. Data from the individual sites were combined into a statewide percentage considering function classification, geographic region, and vehicle miles traveled.

The data show that the usage rate increase found in …

Evaluation Of Kentucky’S Click It Or Ticket Campaign, Kenneth R. Agent, Eric R. Green

Kentucky Transportation Center Research Report

The objective of this report was to document the results of the Click It or Ticket campaign in Kentucky. The campaign involved a combination of earned media, paid media, and enforcement. The earned media started about three weeks prior to Memorial Day 2001 and continued through the enforcement period. The paid media started about two weeks prior to Memorial Day. The enforcement period was a two-week period including the week before and the week of Memorial Day.

The evaluation of the campaign included documenting the activities associated with the program (publicity and enforcement) and evaluating the results. The evaluation involved …

Heavy-Atom Quenching Of 9-Ethylcarbazole In Heterogeneous Matrices: Micelles And Latexes, Paul Conrow

Theses

The fluorescence quenching of 9-ethylcarbazole was studied in solution and heterogeneous dispersions. A heavy-atom quencher, 4-iodotoluene, was used to quench the fluorescence of 9-ethylcarbazole. Polymer analogs of 9-ethylcarbazole and 4-iodotoluene were incorporated into separate latex solutions, and quenching experiments were carried out with non-polymer and latex-bound analytes. Quenching in micellar solutions and latex dispersions was 20-1000 times more efficient than in homogeneous solutions. The diffusion of analytes into the dispersed phase of heterogeneous matrices created high local concentrations of the fluorescing species and quencher, while the global concentrations remained relatively low. The fluorescence quenching in latex solutions of poly[(methyl methacrylate)-co-vinylcarbazole] …

Uses Of Internet Technology In Clinical Practice, Ibrahim Mansoor

Saudi Medical Journal

The practice of medicine has extended itself to vast areas and requires active clinicians to systematize and organize their workload through the use of the most up-to-date digital and computer communication technologies. Computerization and worldwide accessibility of information has especially provided great assistance in this regard. The explosive growth of medical information increases the need for the use of these new methods of organizing and accessing data. This article briefly summarizes a few of the vital tools that internet technology has provided clinical practice, with the aid of basic concepts of internet, database systems, hospital systems and data security and …