Digital Commons Network^™

Development Of Exemplary Learning Activities For Energy And Transportation Technology, Cornel D. Kilber

Theses and Dissertations

No abstract provided.

Corticosteroid Effects And Senescence In Cultured Endothelium, Stephen A. Gudas

Theses and Dissertations

Cultures of human umbilical vein endothelial cells were treated with heparin-corticosteroid combinations to determine effects on cellular growth. Standard proliferation assays, colony formation assays, and cytoflourometric analysis were the methods employed. Dexamethasone (DEX) and hydrocortisone (HC) were inhibitory to growth of HUVEC when EtOH was used as a solvent and fully supplemented medium (20% serum) was employed. When DMSO was the solvent, growth enhancement sometimes occurred when (DEX) was the test steroid; growth inhibition occurred with this steroid when a reduced (1%) serum component was used. Since significant inhibition of cell colony formation in response to DEX administration was observed, …

The Effect Of Man On The Landscape And The Effect Of Land On The Manscape: Or Contingent Plans For Knowing A Mountain, Taylor Scott Baldwin

Theses and Dissertations

In my artistic practice, I emphasize personal and pan-cultural anxieties regarding civilization and the environment as an impetus for work in sculpture, video, and drawing. By locating marginal microcosmic subject matter that tellingly exhibits macrocosmic global dread, I seek to capture and distill our overwhelming eco-socio-political anxiety into a portrait of a society at a point in its history when the specter of nameless impending disaster weighs pressingly on the collective psyche. This thesis is supplementary to my work of sculpture in the Graduate School of the Arts Thesis Exhibition at the Anderson Gallery opening on April 27th, 2007. The …

Phenotypic And Functional Characterization Of Ia+ And La- Sublines Of The Human Monocyte-Like Cell Line, U937, Coles Meredith Squire

Theses and Dissertations

Sublines were derived from the U937 human monocytic cell line by limiting dilution techniques. Several of the sublines derived in this manner were found to constituitively express la, unlike most U937 cell lines previously examined. Thus the la+ and la- sublines were examined and characterized phenotypically and functionally. Morphologically the sublines, both la+ and la-, were found to be similar to the originally described U937 parent cell line. They were positive for production of non- specific esterase and expressed the HLA phenotype A(3,X), B(51,18), DR(2,X). The sublines were examined by immunofluorescence techniques with a large number of antibodies specific for …

Development Of Solid Substrate Luminescence And Chromatographic Techniques For Chemical Analysis, William J. Long

Theses and Dissertations

Room Temperature Phosphorimetry (RTP) is a sensitive and selective technique which is well suited to the analysis of compounds of environmental and pharmaceutical interests. Absolute sensitivity is generally in the low to subnanograrn range. Selectivity of this technique is due to the fact that only several hundred compounds phosphoresce at room temperature. In these studies attempts are made to gain a greater understanding of the phenomenon of solid substrate room temperature phosphorimetry and to extend the application range of the technique.

This goal is approached through several directions, all leading to a greater understanding of solid substrate luminescence in general, …

Hydrogeology Of The Hillsboro Landfill, Hillsboro, North Dakota, Jeffrey D. Maletzke

Theses and Dissertations

Landfills are the primary means for land disposal of solid wastes, and as such, they represent potential sources of groundwater contamination. This potential for contamination is exemplified by the Hillsboro landfill, which was emplaced above the Hillsboro aquifer, within permeable surface materials, and under shallow water-table conditions. Burial of refuse in trenches 15-feet (4.57 m) deep ensure that at least portions of the refuse are below the water table, which varied from 5.4 to 13.2 feet (1.7 to 4.0 m) below the surface. Concern over these factors led to the present study.

Subsurface conditions were investigated by electrical, earth-resistivity surveying. …

Final Project Report On Two Stage Biological Fluidized Bed Process, Ajit Thomas Joseph

Theses and Dissertations

No abstract provided.

Managing Computer Security : Matching Threats And Protective Measures, Roger B. Newton

Theses and Dissertations

No abstract provided.

Non Random Distribution Of Penicillin Binding Proteins In Escherichia Coli As Determined By Electrophoresis And Sephacryl S-1000 Chromatography, Monte J. Leidenix

Theses and Dissertations

No abstract provided.

The Electrochemical Deposition Of Metal Microparticles Into Polymer Modified Electrodes With Electrocatalytic Applications, Kent M. Kost

Theses and Dissertations

No abstract provided.

Changes In The Selective Listening Skills Of Children With Central Auditory Processing Disorders, Joan Mary Meger Jay

Theses and Dissertations

No abstract provided.

A Comparison Of Nurses' And Patients' Perceptions Of Patients' Psychosocial Needs In The Intensive Care Unit, Jane E. Indergaard

Theses and Dissertations

No abstract provided.

Developmental Profiles Of A Selected Set Of Embryo-Lethal Maize Mutants, Guy E. Farish

Theses and Dissertations

No abstract provided.

A Content Analysis Of Attitudes Held By Selected Southeast Asian Newspapers Toward President Ronald Reagan's Trip To China, Man-Tsun Jimmy Chang

Theses and Dissertations

No abstract provided.

One Child's Style : Parallels In Writing And Drawing, Patricia Peech

Theses and Dissertations

No abstract provided.

Stirring The Hornets' Nest : The Health Initiative Of 1978, Tracy A. Potter

Theses and Dissertations

No abstract provided.

The Effective Use Of Standardized Tests, Vincent S. Reep

Theses and Dissertations

No abstract provided.

Coupled Downflow Biological Fluidized Bed Process, Chong Seng Ong

Theses and Dissertations

Bench-scale treatability research conducted at the University of North Dakota Sanitary Engineering Laboratory demonstrated that the coupled, downflow, biological fluidized bed process was an effective system for the treatment of synthetic fuels processing wastewater. In the biological fluidized bed process the nitrification and denitrification columns were coupled to nitrify ammonia to nitrite and/or nitrate, and then to denitrify nitrite and/or nitrate to nitrogen gas, in addition to the breakdown of carbonaceous and organic nitrogen. The wastewater used in the research was generated by the Great Plains Coal Gasification Plant located at Beulah, North Dakota. The two fluidized bed reactors contained …

An Exploratory Study Of Sixth Graders Perceptions Of The Nuclear Presence, Karen Durham Guy

Theses and Dissertations

No abstract provided.

An American Reaction To Apartheid, Melvin D. Sorg Jr.

Theses and Dissertations

Just what is the American reaction to apartheid, and how does one make generalizations about those perceptions and the values they imply? In approaching these questions the method chosen was to look at the visible reactions of those opinion leaders in the administration, press, and Congress that the American public took their cues from in forming attitudes in this area of foreign relations. Written articles and public statements reported by the press and in professional magazines and journals were examined, first to see if the reaction of these opinion leaders to the issue of apartheid and related concerns could be …

College Students' Use Of Genderlect, Laurie Patricia Light

Theses and Dissertations

Genderlect is linguistic performance characteristic of gender groups (Kramer, 1974). The present study was designed to investigate genderlect in the form of noun usage among college students. The specific purpose of this study was to determine if there were noun choosing differences between male and female subjects in referencing the concepts “adult male" and "adult female"; and, if present, did the sex of the subjects and/or sex role of the subjects effect the differences.

This purpose was accomplished by collecting, a written language sample from each of 45 male and 50 female subjects. The subjects were shown a series of …

Comparable Worth In The North Dakota State Public Sector, Beth Benson Schmidt

Theses and Dissertations

No abstract provided.

An Exploratory Study Of Elementary-Aged Children's Conceptions Of Death Through The Use Of Story, Thurman Gorria Guy

Theses and Dissertations

The purpose of the study was to explore elementary-aged children's conceptions of death through the use of stories and to examine the use of story as a medium in the expression of children's conceptions of death. The subjects were 31 elementary-aged children (12 kindergarteners. 9 second graders, and 10 fourth graders). Each group was randomly divided into Group I and Group II. Group I (contextual stories) listened to three stories that reflected real life experiences with death; stories were adapted from children's literature. Group II (media stories), on the other hand, listened to three stories that presented an actual death …

Construction Of A Biotyping System For Differential Identification Of Strains Of Staphylococcus Aureus., Judy Kae Magnuson

Theses and Dissertations

Staphylococcus aureus is a gram-positive, catalase-positive, coagulase positive, non-motile, facultatively anaerobic coccus usually arranged in irregular clusters that commonly causes pustules, carbuncles, impetigo, cellulitis, and post-surgical wound infections. S. aureus also causes septicemia, endocarditis, pneumonia, meningitis, osteomyelitis, exfoliative skin disease, scalded skin syndrome, toxic shock syndrome, and food poisoning. The method currently used for distinguishing among strains of Staphylococcus aureus is bacteriophage typing.The goal of this research was to develop a biotyping system for differentiating among strains of S. aureus. The parameters selected for the biotyping system included: DNase, phosphatase, gelatinase, urease, arginine decarboxylase, fermentation of mannitol, galactose, lactose, maltose, …

Comparison Of Virulent And Avirulent Legionella Pneumophila And Evaluation Of Fish As A Potential Environmental Reservoir/Experimental Model, Sandra Reading Sommer

Theses and Dissertations

Legionella pneumophila was first recognized as a cause of human pneumonia in 1976 . Since then, much has been learned about the microbiology, pathophysiology and epidemiology of this organism. The features which permit one strain but not another to invade human lung tissue and produce disease remain incompletely understood. This study e valuated several attributes of a virulent and an avirulent strain of L. pneumophila in an attempt to identify characteristics which would distinguish the two. Evaluation of a new medium, buffered egg yolk agar, showed that virulence was maintained after 26 passages, which was the same as the buffered …

Vietnam In Context : Isolationism In American Policy, 1889-Present, Jeff Burum

Theses and Dissertations

No abstract provided.

A Study Of Computer Uses By North Dakota School Districts, Gary William Thompson

Theses and Dissertations

No abstract provided.

Studies On The Toxicity Of Ninhydrin For Bacteria, Shanti Rawat

Theses and Dissertations

No abstract provided.

An Assessment Of Pain Responses During Stages Of Pregnancy, Ann H. Dunbar

Theses and Dissertations

As physical therapists are becoming more involved with the pregnant population both in traditional patient care as well as in childbirth education, a better understanding of the influence of pregnancy on the pain system is needed. The purpose of this study was to determine if an endogenous analgesia system is present in pregnant humans as has been shown to be present in animals (Ginzler, 1980). Women's affective and intensity responses were measured during late pregnancy, labor and post-partum. Using a repeated measures design, fifteen women responded to thermal stimuli (43-52 degrees C) by marking a visual analogue scale. No significant …

Estimational Abilities And Mathematics Achievement Of Seventh Graders, Mary Elizabeth Mendenhall

Theses and Dissertations

Computational estimation and mental computation are two of the most neglected areas of today's mathematical curriculum. Much has been written about these two concepts, but little instruction has been carried out in the classroom (Johnson, 1979; Reys, 1986). Freeman (cited in Reys & Bestgen, 1981) states that less than 3% of textbooks had estimation lessons. Reys (1987) found that only 4% of lessons in all fourth-grade textbooks of the early 1980's deal with estimation. Also, Buchanan (1978, p. 2) observes that: "Instruction in. estimation is not something that has been tried and failed; it has not been tried on any …