Digital Commons Network^™

The Design Of A Life Support Circulation System For Hyperbaric Chambers, Kenneth P. Orchuk

Theses and Dissertations

The purpose of this thesis was to present the design of a Life-Support Circulation System for Hyperbaric Chambers as specified by the Themis Committee.

An important objective was to design a versatile circulation system which could be constructed from commercial products.

Circulation specifications were set by conditions required for the animals under observation in the hyperbaric chambers. Since these studies were to be conducted for prolonged periods, cost analysis warranted a closed system design.

The versatility of the system required investigation of several types of valves for satisfactory operation. Also, pressure monitoring controlled valves and pressure regulators had to be …

Communication Of Experimenter Expectancy As A Function Of The Internal-External Locus Of Control, Diane M. Harder

Theses and Dissertations

Several studies suggest) that experimenters may influence subjects in experimental situations and thereby obtain the predicted results (Rosenthal, 1966). Thus, the results obtained in research may reflect (1) independent vatfiabl.es, and (2) bi. resulting from the communication of expectancies by the experimenter.

Although numerous investiga^ ons have considered characteristics of experir nters and subjects that facilitate expectancy communication, the experimenter effect remains inadequately explained (Fode, 1967). It was felt that the Investigation of an additional variable, internal-external locus of ontrol, (Rotter, 1954) might contribute further informationL Past research suggested that internal subjects are better influencers (Pharos, 1965), and that they …

The Effects Of Sex And Levels Of Acquaintance On Risk-Taking In Groups, Richard A. Harper

Theses and Dissertations

Problem: This study had three purposes: (1) to test for differences in risk-taking among all male, all female, and mixed-sex groups; (2) to test for differences in risk-taking between low acquaintance groups and high acquaintance groups; and (3) to investigate whether or not familiarity with the risk-taking instrument, the Choice Dilemmas Questionnaire, affected risk-taking.

Procedure: The subjects used in this study were 144 male and female freshmen who were enrolled in Humanities 101 at the University of North Dakota in the fall semester of 1969. The subjects were randomly selected from the total male and female freshmen population who were …

An Exploratory Study Of Holland's Theory Of Vocational Choice And Rotter's Social Learning Theory, James A. Foster

Theses and Dissertations

Purpose: The purpose of this study was to explore the relationship between Holland's theory of vocational choice and Rotter's social learning theory. More specifically, it was aimed at examining the interplay between internal-external locus of control and consistent and inconsistent vocational patterns to determine whether the apparent differences between personality theory and vocational choice theory could be reduced.

Subjects: The subjects were 493 freshmen males who entered the University of North Dakota during the Summer or Fall of 1967, participated in the Orientation Program, and completed one semester of course work. In accordance with the experimental design 474 subjects of …

Qualitative And Quantitative Methods Of Automation Equipment Investment, Charles S. Knode

Theses and Dissertations

No abstract provided.

Separation Of Scandium And Calcium By Liquid-Liquid Extraction Using Tri-N-Butyl Phosphate As Solvent, Kavasseri P. Radhakrishnan

Theses and Dissertations

Equilibrium data have been obtained for the systems Ca(N03)2- HNO3- TBP- H20 and Sc(N03)3- Ca(N03)2- HNO3- TBP- H20 over a wide range of concentration of the metal nitrates in the aqueous solution. Equilibrium acid concentration was used as a parameter for the equilibrium curves.

For the system Sc(N03)3- Ca(NO3)2- HNO3- TBP- H20 the distribution coefficients of scandium and calcium decreased with increasing acidity of the aqueous phase. The distribution coefficient of scandium was largely dependent on the calcium concentration in the aqueous phase rather than the scandium concentration as a result of the salting-out effect of calcium nitrate.

The separation …

Activated Carbon From North Dakota Lignite, John R. Mcnally

Theses and Dissertations

Activated carbon was produced by reacting lignite char with steam in a fluidized-bed reactor which was designed and constructed for this study. Effects of three variables temperature, residence time and particle size, at four levels were studied statistically using a Latin square design. When the analysis of variance indicated that only two of the variables, temperature and residence time, were significant, a two-way classification design was used to investigate optimum activation conditions.

Activated carbon with adsorptive powers which were equal to or superior to Darco active carbon, as shown by the iodine test and the color adsorption test, were produced …

A Preliminary Study Of The Effects Of Temperature And Coal Source In Efficiency Of Electrostatic Precipitation Of Fly Ash From Western Coals, Stanley John Selle

Theses and Dissertations

The investigation was the first phase of a program to develop a pilot electrostatic precipitator test facility. The facility was to study the effects of various operating conditions on precipitator collection efficiency for fly ash from western coals.

A plate-type pilot electrostatic precipitator was built and modified to increase its applicability to the problems studied.

Results of tests9 run to determine the effect of temperature on collection efficiency for fly ash from a single sources indicated the existence of an optimum operating temperature. Test results also showed that the coal and fly ash composition have an effect on precipitator collection …

Ecological Factors Affecting Lateral Distribution Of Goldeye Hiodon Alosoides (Rafinesque), In The Little Missouri Arm, Lake Sakakawea, North Dakota, Stanley I. Johannes

Theses and Dissertations

The lateral distribution of goldeye, Hiodon alosoides (Rafinesque) in Little Missouri Arm, Lake Sakakawea, North Dakota, was investigated during 1967 and 1968. This species, which is of commercial importance in Canada, is present in great abundance in Lake Sakakawea, yet is not commercially exploited in that body of water.

Experimental gill nets were fished from the surface at eight locations along the Little Missouri Arm to detect differences in goldeye populations along the length of the arm. A total of 7,191 fish were taken of which 6,536 or 90.80% were goldeye. Mesh selectivity data was recorded; 1 1/4 inch mesh …

A Study Of The Factors Affecting Lds Institute Enrollment Among Students From Homes Of Parents Who Are Inactive In The Lds Church, Boyd Leslie Robertson

Theses and Dissertations

The purpose of this study is to determine if there are differences in characteristics of home environment, school environment, or within the students themselves, between college students enrolling in classes taught at the LDS Institute of Religion, who come from homes where both parents are "inactive" in the LDS church, and a similar group of students who do not enroll.

Stabilization Of Soil By Use Of Expansive Cement, Ebrahim Shirazi

Theses and Dissertations

Hydration of the cement paste resulting in the formation of shrinkage cracks in soil-cement stabilized bases is one of the major problems when cement is used with certain soils. A new approach to control these shrinkage cracks is the use of expansive cement instead of regular portland cement. In this study the writer attempts to gain an insight into the effect of expansive cement on strength and durability of the soil-cement and examine whether it is advantageous to substitute expansive cement for regular portland cement.

A silty soil typical of materials found in the Red River Valley, North Dakota, was …

A History Of The Deseret Alphabet, Larry Ray Wintersteen

Theses and Dissertations

The Church of Jesus Christ of Latter-day Saints during the years 1852-1877, introduced to its membership a form of rhetoric (writing system) called the deseret alphabet (phonetic alphabet). This experiment was intended to alleviate the problem of non-communication which was created by the great influx of foreign speaking Saints into the great Salt Lake Valley.
The alphabet was developed and encouraged by the Prophet Brigham Young and a few followers. Much to their dismay the members of the Church did not have the same vision of its workability as did its promoters.
This new alphabet appears not to have met …

An Investigative Approach To Elementary School Science Teaching., Elmer G. Schmiess

Theses and Dissertations

No abstract provided.

An Analysis Of The Rate-Of-Return On Investments Made In A Master's Degree Program By School Administrators, Teachers And Certificated Auxiliary Personnel In Selected Minnesota And North Dakota Schools., Dennis D. Mccullough

Theses and Dissertations

No abstract provided.

The Relationship Of Student Academic Success In Selected California Junior College Business Data Processing Programs To Special Aptitudes Andsecondary School Academic Achievement., Allan D. Larson

Theses and Dissertations

No abstract provided.

A History Of Business Letter-Writing Theory As Revealed In An Interpretive Analysis Of American Collegiate Business Communication Textbooks, 1915-1967., Gayle A. Sobolik

Theses and Dissertations

No abstract provided.

The Relationship Of Selected Variables To The Academic Performance Of Transfer Students At The University Of North Dakota., John Harold Halcrow

Theses and Dissertations

No abstract provided.

Selected Interest Factors Related To Academic Achievement At The University Of North Dakota., David Lawrence Lee

Theses and Dissertations

No abstract provided.

Design Of A Quick Opening Closure, Juan R. Morales

Theses and Dissertations

No abstract provided.

An Experimental Study To Identify To What Extent Beginning Shorthand Influences The Spelling Proficiency Of High School Students, Doris Marie, Sister Mattingly

Theses and Dissertations

No abstract provided.

A Study Of Multistory Structural Analysis By Moment Method, Hsin-Feng Hsu

Theses and Dissertations

No abstract provided.

Seasonal And Daily Food Habits Of Goldeye, Hidon Alosides (Rafinewque), In The Little Missouri Arm Of Lake Sakakawea, North Dakota, Bernard Lee Evenhuis

Theses and Dissertations

No abstract provided.

Strain Gage Response As A Function Of Surface Roughness, Donovan C. Evenstad

Theses and Dissertations

No abstract provided.

Direct Digital Control Of A Mass Spectrometer, Bill J. Stearns

Theses and Dissertations

No abstract provided.

Influence Charts Of A Landing Strip By The Energy Method, Yei-Lung Tien

Theses and Dissertations

No abstract provided.

Molluscan Paleontology Of The Pierre Shale (Upper Cretaceous), Bowman County, North Dakota, Kenneth F. Brinster

Theses and Dissertations

The Pierre Shale of Campanian and Early Maestrichtian age in Bowman County, southwestern North Dakota, has an abundant molluscan fauna and 51 species are described herein. The 51 species consist of 1 species of scaphopod, 13 species in 11 genera of gastropods, 24 species' in 17 genera of bivalves, and 13 species in 6 genera of cephalopods.

The stratigraphy of the Pierre Shale in Bowman County was not compiled into a composite section because of the homogeneity of the shale, the lack of distinctive lithologic units, and the slumped condition of the shale. However, the biostratigraphic position of the Bowman …

Quaternary Geology Of Rolette County, North Dakota, Dwight E. Deal

Theses and Dissertations

Rolette County contains approximately 942 square miles in north central North Dakota (Tps. 159-164 N., Rs. 69-73 W.) adjacent to the Canadian border. It includes the southeastern part of the Turtle Mountains and part of the glacial Lake Souris basin. Basic lithologies recognized in the surface sediments were bedded clay, silt, sand, and gravel; and three types of non-bedded diamicton. These were combined and, with bedding characteristics and organic content, formed 15 practical field mapping units. Geologically significant scarps and hill slopes were also mapped. The data collected is shown at a scale of 1 inch to 2 miles. The …

Groundwater Flow In Part Of The Little Missouri River Basin, North Dakota, Thomas M. Hamilton

Theses and Dissertations

The Little Missouri valley in western North Dakota is deeply incised into slightly permeable Mesozoic and Cenozoic sediments. An evaluation of the groundwater flow in part of this valley was 'based on the present groundwater flow-system models. Abrupt changes in the hydrochemical facies have been explained relative to a continuous flow system.

The Little Missouri valley ls the discharge area of a regional groundwater flow system; it affects the potential distribution of the flow system for a minimum of 1.000 feet below the valley floor. The discharge area is approximately the same width as the valley floor and has a …

History Of The Davis County Clipper From Its Inception In 1891 To The Present 1970, Cammon I. Arrington

Theses and Dissertations

To write a descriptive history of the Davis County Clipper and its editors was the purpose of this study.

The first person involved with the newspaper was Lamoni Call who had been printing a small brochure to advertise his business. He asked John Stahle, Sr. to join him in printing some news along with the advertisments.

Regular publication began early in 1891 under the name of the The Little Clipper. Dissolution of the partnership came in 1894. Mr. Stahle maintained the editorial side of the newspaper his entire life. His son John Stahle, Jr. lived and loved the printing …

Optical Anisotropy Of Bite--S₅, Andrew J. Liu

Theses and Dissertations

No abstract provided.