Digital Commons Network^™

Separation Of Benzene And N-Hexane Using A Liquid Membrane Technique, Navin D. Shah

Theses and Dissertations

The separation of a mixture of benzene and n-hexane was studied using a liquid membrane technique. Sparkleen^ detergent was used as the surfactant and heavy mineral oil was used as the solvent to receive the permeate.

The effects of the following variables on the separation factor were investigated:

1. The relative proportion of benzene and n-hexane in the original mixture.

2 . Surfactant concentration.

3 . Quantity of surfactant solution.

4. Amount of solvent.

5 . Contact time with solvent.

The effect of each variable was studied by varying the values of that variable while holding other variables constant.

It …

A Study Of The Effects Of A Free Reading Program In Social Studies On The Self Image Of A Selected Group Of Eleventh Grade Core Students, Jerome R. Jekel

Theses and Dissertations

Purpose of this Study: The purpose of this study was to ascertain if a change would occur in students self image as a result of being involved in the Free Reading Program (FRP).

The Free Reading Program (FRP) was a design focusing on a personalized curriculum which offered students a free choice of materials. Substitution of the reading program for all social studies requirements was the incentive. Recognized educational principles were used in this program with the object of creating an atmosphere of relevancy for the student. Paramount consideration was given to the changes that occurred in student behavior, particularly …

Reporting The Results Of Operations In The Computer Industry, Donald T. Swenson

Theses and Dissertations

No abstract provided.

Direct Estimation Evaluation Of Rehabilitation Patients By Non-Expert Judges, Martin T. Ivers

Theses and Dissertations

The investigation completed by Lipp (Evaluation of rehabilitation patients by direct estimation procedures, Ph.D. Dissertation, University of North Dakota, 1969) demonstrated that exceedingly reliable ratio scale measurement of degree of physical disability could be achieved by expert judges (Js) using direct estimation procedures.

In the present investigation, 10 J^s without formal rehabilitation training or experience made magnitude estimations of degree of physical disability shown by 10 rehabilitation patients in the modalities of ambulation and transfer. The patients' behaviors were depicted by the videotape recording which were used in the Lipp investigation. The magnitude estimation portion of the Lipp investigation was …

A Survey Of Cross Country Programs And Training Methods In Canadian Colleges And Universities, David W. Guss

Theses and Dissertations

The purpose of this study was to determine current practices and training methods in cross country programs in selected Canadian colleges and universities. Questionnaires were sent out to forty-six colleges and universities, and 38, or 82.6 percent, were returned. Twelve, or 31.5 percent, of the schools indicated that they had no cross country program.

The questionnaire was used to provide general information, reveal policies and practices, determine how athletes were trained and analyze the strengths and weaknesses of the cross country programs in these selected Canadian colleges and universities.

An analysis of the results of the survey indicated that:

1. …

A Study Of The Bulk Electrical Resistivity Characteristics Of Fly Ash From Lignite And Other Western Coals, Warren Ernest Bucher

Theses and Dissertations

Fly ash produced from burning fossil fuels presents an air pollution problem when it is discharged into the atmosphere. Fly ash can be removed from gases using electrostatic precipitation. Efficiency of precipitation depends to a large extent on the bulk electrical resistivity of the fly ash which in turn depends on conditions such as ash temperature, moisture content of the gas, and ash composition. Bulk electrical resistivity is the total resistivity of a dust layer.

A bulk electrical resistivity testing apparatus was built and operated according to the American Society of Mechanical Engineers Power Test Code 28 to investigate the …

A Comparison Of Two Types Of Turns Used In The Breaststroke And Butterfly, Larry W. Swanson

Theses and Dissertations

This study compared the speed of the touch-turn to the grab-turn using the competitive butterfly and breaststrokes. The subjects were twenty five male high school swimmers, all of whom had at least three years of competitive experience. All subjects received instruction on each turn during 16 weeks of a competitive season and practiced each turn dozens of times. Each subject was tested on the speed of each turn. The tests were given on two consecutive days to establish reliability. The Pearson Product Moment correlation was used to determine the relationship of the initial test to the retest. An analysis of …

A Literature Survey (1960-1970) To Identify The Slow Learner's Capabilities In Business Education, Loretta Sedlmayer

Theses and Dissertations

This study was designed to identify the slow learner’s capabilities in business education. The study began with a perusal of the Business Education Index and the Education Index for literature relative to slow learners in general and particularly to slow learners in business education. Materials used were those written between i960 and 1970.

The findings ware classified into three main parts: (1) a general description of the slow learner—his I.Q. range and characteristics pertinent to his educational and occupational potential and needs; (2) the role that business education plays in preparing him for satisfactory office employment; and (3) the acceptance …

Cognitive Dissonance As A Function Of Internal-External Locus Of Control, Dennis U. Spjut

Theses and Dissertations

According to cognitive dissonance theory engaging in behavior inconsistent with one's beliefs arouses dissonance. When individuals choose to engage in a boring and repetitious task they tend to positively reevaluate the task. Recent research (Pallak, et al. 1967) using an incidental verbal learning paradigm indicates that subjects who voluntarily commit themselves to performing a boring task reduce dissonance via enhanced task performance rather than through positive task reevaluation. Both the arousal of dissonance and its reduction can be expected to vary with individual differences. The present study investigated the individual differences of sex and internal-external locus of control as related …

Independence As Viewed By The Accountant And The Securities And Exchange Commission, Thomas F. Geisen

Theses and Dissertations

No abstract provided.

A Study Of North Dakota Public Secondary Social Studies Teachers For The Academic Year 1969-1970, Maurice T. Russell

Theses and Dissertations

Problem: This study examined the academic preparation, teaching assignments, and selected elements of employment of all 673 public secondary social studies teachers in the state of North Dakota for the academic year 1969-1970.

Method: There were 9 academic variables considered in the preparation of the social studies teacher: United States history, world history, American government, problems of democracy, economics, international relations, sociology, psychology, and geography. The examination of the preparation included the source of the highest degree earned and the distribution of degrees by accreditation levels and sex. Teaching assignments within and outside of the social studies fields were also …

Nesting And Brooding Characteristics Of Sharp-Tailed Grouse (Pedioecetes Phasianellus Jamesi Lincoln) In Southwestern North Dakota, Carter Drew Christenson

Theses and Dissertations

A study of the nesting and brood habitat preferences of sharp-tailed grouse (Pedioecetes phasianellus jamesi Lincoln) was conducted in southwestern North Dakota during the reproductive seasons of 1969 and 1970. Radio telemetry was used to monitor the spring and summer activities of seventeen sharp-tail hens. Eight brooding hens were semi-continuously radio-tracked for movement and cover selection. A quantitative and qualitative analysis of seventeen nests and eight renests was made to determine the preferred nesting cover and the effects of intensive grazing upon it .. Nests were established either in non-use areas or in areas of light to moderate grazing. These …

Cotton Famine Relief Ligislation: A Study In Mid-Victorian Attitudes, John A. Steidl

Theses and Dissertations

The purpose of this thesis is to explain the cotton famine and resulting relief legislation as an example of attitudes characteristic of the mid-Victorian period. It is at times easier to understand a period of history by investigating a specific, readily defined event through the primary and secondary source material available and to interpret that period in terms of the forces involved in shaping the event. This reasoning is only valid, however, if the event is truly representative of the thought and behavior of the period. In my estimation the cotton famine was indeed representative, and it will be my …

Thermal Dissolution Of Lignite Under Pressure Of Carbon Monoxide And Water, Michael Kuo-Tay Peng

Theses and Dissertations

The relative effects of different operating conditions in the reaction of lignite with carbon monoxide and water were studied in £ microautoclave.

A Greco-Latin square experimental, design was employed to test four independent variables at four levels.. Independent variables were reaction temperature, initial.pressure of carbon monoxide, reaction time, and the ratio of water to lignite. The dependent variable was the per cent solubilization of lignite calculated from the amount of residue recovered and initial moisture- and ash- free weight of -lignite charged.

An analysis of variance indicated that at the 99 per cent confidence level only the temperature was significant. …

Constitutional Reform In North Dakota, Darrel J. Alm

Theses and Dissertations

This thesis attempts to show that the constitution of North Dakota, adopted in 1889, is not capable of serving the needs of modern state government.

The debates of the constitutional convention are discussed to show why many of the provisions were incorporated. Proposed constitutional amendments and initiated and referred statutory measures are reviewed to show the type of changes which have been undertaken. The various studies conducted for the purpose of revision are discussed and their recommendations given. The calling of the constitutional convention scheduled for 1972 is also described.

Attempts at revising the constitution of North Dakota have met …

So This Is How You Run A Media Center: Organizing, Administering, And Developing A School Instructional Media Center - An Annotated Bibliography, Shelby Elaine Strand

Theses and Dissertations

The purpose of this study was to look into the administrative needs of the media specialist working in a school situation, and to provide for him resources and suggestions on administrative procedures. These would include general examples and descriptions of media center operations, sources and selection of media and equipment, standards for media centers, and specific methods used in technical processing and other administrative activities.

Books, periodicals, pamphlets, government documents, and materials available through ERIC with recent publications dates were searched. A number of sources were eliminated in an effort to prepare a practical and useful bibliography. A good portion …

A Study Of The Changing Emphasis In Formal Education For Accountants, Kenneth L. Hankerson Jr

Theses and Dissertations

No abstract provided.

Return On Investment -- Its Methods And Uses, Alan B. Klein

Theses and Dissertations

No abstract provided.

The Involvement Of The Military In The Affairs Of Modern Mexico, Anthony G. Salerno

Theses and Dissertations

Unlike other Latin American nations, the Mexican armed forces have not resorted to a coup d'etat in the last fifty years, and at the same time have maintained a strong influence in the affairs of the nation.

In this thesis, the writer has tried to explain reasons why the Mexican military has not found it necessary to try to overthrow the government.

The procedure used was to collect and analyze data on the Mexican armed forces, military, and non-military functions and roles to determine reasons for this situation in Mexico. The writer experienced great difficulty in collecting data, nevertheless, in …

An Evaluation Of The Conceptsof Delegation Held By Middle Management In The Computer Industry, Paul Johnson

Theses and Dissertations

This study is an investigation into the modern theory of delegation of authority as viewed by middle managers. Seven theoretical principles of delegation are set forth and seven obstacles to the efficient use of delegation. An empirical study was made by surveying a number of middle managers at the Honeywell corporation, Minneapolis Minnesota. Personal interviews and a questionnaire were used to determine the attitudes of various managers toward delegation principles and practices. An analysis of the data indicated a number of obstacles~ in the practice of delegation; the author suggests elimination of these problem areas will require both a procedural …

A Taxonomic Comparison To Uta Stansburiana Of The Great Basin And The Upper Colorado River Basin In Utah, Lloyd C. Pack

Theses and Dissertations

The lack of a comparative study between the Uta stansburiana of the Great Basin and Upper Colorado River Basin, and the fact that several reptile species have developed distinct populations in the Upper Colorado River Basin prompted this study. Twenty-one external characteristics of these lizards were compared, including several which had not been previously used in the separation of Uta stansburiana into subspecies. All of the statistical data were obtained from preserved specimens. Twelve of the twenty-one characteristics show significant differences between the Great Basin and Upper Colorado River Basin populations. The characteristics of back pattern and throat color show …

Microfilm Technology Its Role In Modern Management, Thomas A. Pawlow

Theses and Dissertations

No abstract provided.

The Cpa As A Management Consultant, David Tillman

Theses and Dissertations

No abstract provided.

A Flora From The Dakota Sandstone Formation Near Westwater, Grand County, Utah, Samuel R. Rushforth

Theses and Dissertations

A cretaceous (Cenomanian) flora from the Dakota Sandstone Formation near Westwater, Grand County, Utah contains an admixture of ferns and angiosperms. The ferns of this flora are representative of an older Jurassic-Wealden vegetational type, whereas the angiosperms are typical of the modern vegetational type. Species of Gleichenia and Matonidium and Astralopteris coloradica represent the dominant forms in this flora. The Westwater flora contains fourteen genera including nineteen species and one variety. New species described from this flora include Asplenium dakotensis, Coniopteris westwaterensis and Ilex serrata.

The Effect Of The Parasite Hymenolepis Diminuta On Iodine Economy In The Rat, David Gourdon Holmes

Theses and Dissertations

A balance of iodine within the rats is important for the maintenance of normal thyroid function. Because of Hymenolepis d[imi]nuta's affinity for certain nutrients, it may upset norma[l] iodine balance in the rat. To determine this, tapeworm-infected and non-infected rats were given 125Iodide orally and the percent uptake of iodide by the thyroid and the amount of radioac[tiv]ity in the tapeworms was determined. The percent distribution of the radio-iodinated compounds in the thyroid, tapeworms and feces was also determined. These procedures were repeated except 125Thyroxine was administered orally. There was a decrease in percent iod[id]e uptake by thyroids of tapeworm-infected …

The Design Of A Laser Doppler Velocimeter, Marlo R. Anderson

Theses and Dissertations

A relatively new method of measuring local velocity in a fluid stream has been devised which eliminates some of the inherent problems of the traditional methods. This method senses the Doppler shift of light scattered from a laser beam incident on particles suspended in the fluid. The Doppler shift is proportional to the particles (or fluid) velocity. This new technique has several distinct advantages over the more traditional methods of velocity measurement.

Asexual Reproduction In Planaria Characteristics Of The Inhibitor(S), Linda Gail Sheffield

Theses and Dissertations

A study was made of the postulated fission-inhibiting substance located in the cephalic region of Dugesia dorotocephala. Rearing decapitated planaria in four different concentrations (25, 50, 75 or 100 ug/ml) of head or whole body extract resulted in a positive correlation between the inhibition of fission rate and the concentration of extract. The difference in inhibitory activity between the two types of extracts was three percent at maximum. The inhibitory substance was partially inactivated at 60° C. There was a direct correlation between the length of time that the extract was heated and the inactivation of inhibitor. The active substance …

The Syrian Massacres And The Cretan Rebellion: Mid-Victorian Humanitarianism And Britain's Eastern Policy, Edward D. English

Theses and Dissertations

The purpose of this thesis is to prove the existence and strength of mid-Victorian humanitarian sentiment. The British government's policy and response to the Syrian massacres and the Cretan rebellion serve as vehicles to show the vitality and power of humanitarianism that was a part of the Evangelical revival. This study will further document the attempted reconciliation of this humanitarian sentiment and Britain's policy in the Near East.

In a general characterization of the unique mid-Victorian period of British history, humanitarianism will be isolated. A humanitarian desire to help will oe shown to be a basis for the British government's …

A Study Of Mignon's Lied In Selected Settings, Robert E. Norton

Theses and Dissertations

The focus of this study is the various treatments given by composers to a twelve line poem by Johann Wolfgang von Goethe. The text is the common factor over which the differences of approach and treatment are laid by composers in compositions which range in time of initial publication from 1796 to 1888. The condition of the Lied immediately prior to the publication of the first of the settings is taken as the starting point, since all of the chosen settings may be classified as Lieder. The composers whose works are discussed are Karl F. Zelter, Ludwig van Beethoven, Franz …

An Analysis Of The Individual Reading Conference In The Fourth, Fifth, And Sixth Grades, Harold E. Stolt

Theses and Dissertations

Problem: The purpose of this study was to determine the effect of in-service training in individual reading conferences and interaction analysis on the individual reading conferences conducted by elementary school teachers in the fourth, fifth, and sixth grades.

Procedure: The research population consisted of fourteen public school teachers. The subjects were divided into a control group and an experimental group and matched according to grade level taught, sex, and years of teaching experience. The experimental group was treated to an in-service program which included training in interaction analysis and the individual reading conference.

Pre and post audio tape recordings were …