Digital Commons Network^™

Applications Of Geographic Information Systems In Pavement Management And Transportation Issues, Chakravarthi S. Gajula

Electronic Theses and Dissertations

No abstract provided.

Emulsification And Degradation Of Crude-Oil By A Rhodococcus Erythropolis, Scott Allen Bailey

Electronic Theses and Dissertations

No abstract provided.

The Effect Of Covalent Attachment Of Ethidium To Dna On The Catalytic Cycle Of Topoisomerase Ii, Adam Geoffrey Marx

Electronic Theses and Dissertations

No abstract provided.

Everydayness, Catherine L. Parrish

Electronic Theses and Dissertations

No abstract provided.

Automated Ultrasonic Nondestructive Testing, Particularly Of Fiber-Reinforced Composite Structures, Shu-Bao Ye

Electronic Theses and Dissertations

No abstract provided.

Ebony's Coverage Of Civil Rights Activists, 1960-1968, Evangeline Wilson

Electronic Theses and Dissertations

This thesis examines Ebony magazine’s coverage of civil rights activists who supported nonviolence unconditionally and activists who believed in violence as a means of retaliation or self-defense during the Civil Rights Movement. Articles written about the leaders and the groups of those who organized between 1960 and 1968 to protest civil rights injustices or to defend themselves against such violations were content analyzed to determine how the two groups were reported. The goal of this study was to provide data that would be helpful in assessing the images presented by Ebony of those who supported the philosophy of nonviolent social …

Development Of Stereoscopic Particle Tracking Velocimetry For Turbulent Flow Field Diagnostics, Veera P. Rajendran

Electronic Theses and Dissertations

Stereoscopic particle tracking velocimetry (SPTV) was used to analyze a turbulent submerged jet of Reynolds number (based on the diameter of the nozzle) 8000. SPTV involves tracking the motion of tracer particles over time in a flow in three dimensions. The first part of this work consisted of developing a stereoscopic particle tracking technique using two high-speed video cameras. This included calibration of the cameras with "known" points, and developing an algorithm to automatically match and track particles. The second part was to apply the same to a submerged water jet in order to measure velocities. The velocities were subsequently …

Nitric Oxide Production: A Mechanism For Inhibition Of Chlamydia Trachomatis Replication, Bojun Chen

Electronic Theses and Dissertations

Chlamydia trachomatis (CT) replicates in macrophages, but is inhibited by IFN-$\gamma$ or LPS. IFN-$\gamma$ and/or LPS induced nitrite production in mouse peritoneal macrophages, macrophage cell lines (RAW264.7 and J774A.1) and McCoy cells. Kinetic studies indicated that peak production occurred 48 hours post-treatment. CT infection itself was insufficient to induce nitrite production, but resulted in enhancement of nitrite production in IFN-$\gamma$-treated cells. Treatment with IFN-$\gamma$ or LPS resulted in significant inhibition of CT replication in these cells. Strong correlation between nitrite production and inhibition of CT replication was observed in RAW264.7 and J774A.1 cells (correlation coefficients: $-$0.93 and $-$0.94, p $<$ 0.001). N$\sp{\rm g}$- monomethyl-L-arginine (L-NMMA) specifically inhibited nitrite production and partially reversed inhibition of CT replication in macrophage cell lines. NOS mRNA was measured in RAW264.7 cells by Northern blot and Dot blot hybridization. Strong correlation between NOS mRNA expression and inhibition of CT replication (correlation coefficient: $-$0.97, p $<$ 0.05) was observed. Anti-TNF-$\alpha$ antibody completely neutralized the biological activity of TNF-$\alpha$ secreted by LPS-treated RAW264.7 cells, yet the antibody neither reduced nitrite production nor restored CT replication. Combination of the antibody and L-NMMA significantly enhanced restoration of CT replication. In peritoneal macrophages, inhibition of CT replication induced by IFN-$\gamma$ was partially restored by L-NMMA or anti-TNF-$\alpha$ antibody. In McCoy cells, inhibition of CT replication induced by IFN-$\gamma$ and LPS was not significantly restored by L-NMMA. Great restoration of CT replication by 1 mM L-NMMA was observed in LPS-treated J774A.1 cells (31%), but not in IFN-$\gamma$-treated cells (5%). Our data indicate that (1) NO production is one of the mechanisms for inhibition of CT replication in IFN-$\gamma$-activated peritoneal macrophages and RAW264.7 cells; (2) NO plays a significant role in CT inhibition in LPS-treated macrophage cell lines, but not peritoneal macrophages; (3) TNF-$\alpha$ may be associated with inhibition, but the mechanism(s) may not involve NO production; (4) NO production may not be the mechanism for CT inhibition in McCoy cells treated with IFN-$\gamma$ and LPS.

A Molecular Basis For Erythromycin Sensitivity And Resistance In Escherichia Coli, Harold S. Chittum

Electronic Theses and Dissertations

The effect of erythromycin on the 50S ribosomal subunit during cell growth has been extensively investigated. Sucrose density gradient analysis of ribosomes formed in the presence and absence of the drug revealed a 50S specific assembly defect is partially responsible for erythromycin's inhibitory effects on wild type cells. Examination of two erythromycin-resistant mutants of E. coli (N281 and N282) revealed that mutant N281 (L22 mutant) but not N282 (L4 mutant) was assembly defective in the presence of the drug, although only at much higher drug concentrations (300 ug/ml vs. 75 ug/ml for wild type cells). The altered genes from each …

College Teaching In Four States: An Examination Of Teaching Methods Received And Needed By New College Teachers, Lee F. Mumpower

Electronic Theses and Dissertations

The purpose of the study was to examine what teaching methods new college teachers received and which ones they believed were important. New college faculty were asked questions on teaching methods to determine which, if any, were made available to them before they entered college teaching. The research questions under study were: (1) What type(s) of methodological preparation do/does higher education faculty receive? (2) What methodological preparation would be beneficial to new higher education faculty? (3) How do new higher education faculty learn methodological preparation? (4) What strategies could be developed to assist new higher education faculty in the development …

Professional Development Needs From The Identified Concerns Of School Leaders As The Change Facilitator For Inclusive Schools, Susan H. Belcher

Electronic Theses and Dissertations

The problem of this study was to identify the professional development needs of the school leader to facilitate the inclusion of students with handicaps into the regular education program. This was a descriptive study which utilized questionnaire methodology. The Change Facilitators Stages of Concern Questionnaire (CFSoCQ) was the instrument selected as appropriate for the study. Permission was obtained from Dr. Gene Hall at the University of Northern Colorado to reproduce and administer the CFSoCQ. The population of this study was school leaders working in Tennessee public schools. A demographic data sheet and the CFSoCQ were mailed to 500 selected school …

The Development Of The Parent Effectiveness Test (Pet), Sharon S. Morrison

Electronic Theses and Dissertations

Abstract Not Available.

Proposed Smoothing Technique To Avoid Numerical Instabilities In A Hydrodynamic Numerical Model, Thomas P. Abraham

Electronic Theses and Dissertations

Despite every effort being made to produce a completely problem-free computational model, no breakthrough has yet been made. When a numerical model is used to solve a real world problem, there is a tendency for the non-physical spurious waves to creep in. If these waves are not checked, they can lead to serious instability problems. Once these waves are removed, the model should be able to simulate physical phenomenon like circulation, separation, flow reversal in the vertical plane, mixing/transport, convection/diffusion, etc.

When a numerical mode] is made to run for a certain period of time, node-to-node oscillations may arise and …

Mechanisms Of T Cell-Mediated Macrophage Activation: Role Of Antigen Specific And Antigen Nonspecific Cognate Interactions, Xiang Tao

Electronic Theses and Dissertations

Macrophages play an important role in host antimicrobial immunity and in non-septic inflammatory reactions. Most studies on macrophage activation have focused on the roles of the T cell-produced cytokine, interferon-$\gamma$ (IFN$\gamma)$ and bacterial product, lipopolysaccharide (LPS). T cell-macrophage interaction is a critical step in initiating both specific and nonspecific immune responses to antigenic stimulation. The current study examines the role of cognate T cell-macrophage interaction in activation of macrophage effector functions and induction of macrophage early activation gene expression. Viable resting T$\sb{\rm H}$2 clone cells can activate IFN$\gamma$-primed macrophages to produce reactive nitrogen intermediates (RNI) or express cytostatic activity. The …

Enhancement Of Topoisomerase Ii-Mediated Cleavage By Ethidium : Novel Approach Toward Development Of Topoisomerase Ii Poisons, Hui Zhou

Electronic Theses and Dissertations

No abstract provided.

Problems Facing Television Stations In Markets 30-50, Marvin F. Williams Iii

Electronic Theses and Dissertations

No abstract provided.

Probing Protein-Protein Interactions Among Proteins Of A Nonaggregated Fatty Acid Synthetase From Euglena Gracilis Variety Bacillaris, Sande G. Williams

Electronic Theses and Dissertations

Enoyl-acyl carrier protein (ACP) reductase from chloroplast nonaggregated fatty acid synthetase (FAS) of Euglena gracilis variety bacillaris was purified to a single band on a denaturing polyacrylamide gel. The enzyme was partially characterized with respect to substrate specificity, reduced nucleotide requirement, and the effect of ACP and Ca$\sp{++}$ on enzyme activity. Antibodies against the purified protein were raised in hens and isolated from eggs. ACP was purified from Euglena in yields of about 1mg/100g (wet weight) of cells. Antibodies were raised against the purified protein. ACP antibodies inhibited the Euglena chloroplast FAS using Euglena or E. coli ACP as a …

Analysis And Forecasting Of Seasonal Changes In Cash Prices For Corn, Wheat, And Oats Grown In South Dakota, Prashobh Karunakaran

Electronic Theses and Dissertations

The overall objective of this study is to identify the seasonal patterns in S.D. cash prices (received by farmers) for corn, wheat, and oats. Seasonality in S.D. cash prices may be different from the seasonality in the U.S. cash prices for a commodity. The reasons for this may be differences in the seasonal supply and demand for the commodity and the supply and demand for substitutes. The availability and price of storage and transportation can also have substantial impact on regional commodity price seasonality. Therefore, it is important that the relationship between the seasonal fluctuations in S.D. cash prices and …

Digital Imaging In Photojournalism : Technological And Ethical Impact, Oliver Eugene Brock

Electronic Theses and Dissertations

No abstract provided.

Removal Of Pollutants From Leachate Using Clay Liners / By Kuntumalla Sangameswaruni Phanindra, Kuntumalla Phanindra Sangameswaruni

Electronic Theses and Dissertations

No abstract provided.

Hawthorne's Frankenstein, Leslie Jarvis Holliday

Electronic Theses and Dissertations

No abstract provided.

The Influence Of Shallow Soil Layer On Refraction Survey And Acoustic-Seismic Measurements, Hari Eswaran

Electronic Theses and Dissertations

No abstract provided.

Effects Of Thickness On Heat Transfer In Fibrous Insulation With Moisture Present, Kendall T. Harris

Electronic Theses and Dissertations

No abstract provided.

An Electrochemical And Spectroscopic Study Of Cerium In The Basic Aluminium Chloride-1-Methyl-3-Ethylimidazolium Chloride Moltensalt, Fang-Ming Lin

Electronic Theses and Dissertations

No abstract provided.

Twenty Years Of Bottled Success : An Analysis Of Texas Monthly Magazine, Ryan Wade Jones

Electronic Theses and Dissertations

No abstract provided.

Binding Kinetics Of Antigen By Immobilized Antibody, Amarendra Madugula

Electronic Theses and Dissertations

No abstract provided.

A Comparison Of State Dependent Learning Effects Among Cigarette Smoking, Nicotine, And Smoke Odor, Richard Steen Chandler

Electronic Theses and Dissertations

No abstract provided.

Deception In The Coverage Of Headlines As Seen In The National Enquirer, The Star, And The Weekly World News, Myrtle Vonsel Alexander

Electronic Theses and Dissertations

No abstract provided.

The Ph Dependence Of The Urea-Induced Unfolding Of Trp Aporepressor, Kathy Jane Helton

Electronic Theses and Dissertations

No abstract provided.

The Naming Of Rape Victims In The Press : The Opinions Of Editors And Reporters, Chris Demaske

Electronic Theses and Dissertations

No abstract provided.