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Synthesis And Evaluation Of Some Arylalkenyl And Arylepoxyalkyl Hydrogen Succinates And Hydrogen Glutarates As Inhibitors Of Rat Liver Β-Hydroxy-Β-Methylglutaryl Coenzyme A Reductase, Paul Emil Marecki

Theses and Dissertations

Atherosclerotic disease is an almost universal phenomenon and increases in severity and frequency with increasing age. Atherosclerosis may contribute to several disorders including bursting of an artery, blockage of an artery, or induction of arterial clotting. The culmination of these diseases is usually premature since at the time of death the unaffected organs are in reasonably satisfactory condition and could have operated for several more years. Among the many factors which act in concert to produce the disease, serum cholesterol levels play a central role. It has been suggested that the lowering of cholesterol levels will provide an effective means …

Hepatic Ornithine Metabolism In Hydrazine-Treated Rats, Van Saxton Hubbard

Theses and Dissertations

Ornithine plays an important role in mammalian intermediary metabolism. Ornithine can be (1) utilized as a component of the urea cycle, (2) decarboxylated to form putrescine, a precursor of the polyamines, spermidine and spermine, and (3) converted metabolically to arginine, proline and glutamate. In prior investigations conducted in our laboratories and others, free endogenous hepatic pools of ornithine were found to be elevated following hydrazine administration. Consequently, time-course alterations of arginase, ornithine δ-transaminase, ornithine transcarbamylase, and ornithine decarboxylase activities were investigated regarding the effect of hydrazine treatment on hepatic ornithine metabolism in the rat. As an outgrowth of these investigations, …

The Effect Of Security And Dominance On Task Perseverance, Gary M. Katz

Theses and Dissertations

The present study investigated Maslow's assertion that individuals who were insecure and dominant would express their insecurity in a different manner than those individuals who were insecure and submissive. The amount of time spent on a puzzle solving task was used as an index of the expression of insecurity. It was hypothesized that there would be a significant interaction of security and dominance on the amount of time spent on the puzzle solving task, with the insecure-dominant group demonstrating more persistence than the insecure-submissive group at the task.

A pool of potential subjects completed Maslow's (1952) Security-Insecurity Inventory and the …

Proselyting Techniques Of Mormon Missionaries, Jay E. Jensen

Theses and Dissertations

This study is a review of proselyting techniques in the full-time missionary program of the Church of Jesus Christ of Latter-day Saints from 1830 to 1974. Official handbooks as well as Mormon mission publications were the major sources. The writer's experience as a full-time missionary gave additional perspective.

Missionary techniques involved personal contacting on the streets and door to door. Group contacting came through public meetings and the mass media. Church members played a vital role in contacting and fellowshipping nonmembers. Early proselyting lesson plans written in outline form emphasized logic and reason. Later ones were in dialogue form and …

A Study Of The Relationship Between Number Of Distinctive-Feature Errors And Judged Speech Defectiveness, Laura Lynne Krowchenko

Theses and Dissertations

The purpose of this study was to determine if judged speech defectiveness is systematically based on the distance between the target and the substituted phoneme, as measured by the number of distinctive-feature errors occurring in a phoneme substitution. Eighteen passages of continuous speech, arranged in paired comparisons, were presented to fifty subjects. Fifteen passages were prepared so that each contained ten phoneme substitutions of one, two, three, four, or five feature errors. Three passages were articulated correctly. Forty-five pairs of passages were played for the subjects who x?ere required to judge which passage of a pair was the more defective. …

Sensory Approach To Creative Writing: A Study Of The Effect Of Increasing The Number Of Types Of Sensory Stimuli Intended To Motivate Children To Write Creatively, Richard P. King

Theses and Dissertations

The Problem: The primary purpose of this investigation was to determine if increasing the number of types of sensory stimulation prior to a writing experience would help children to write more creatively and to write longer stories.

The secondary purpose was to investigate the use of the combination of an intelligence test score plus three measures of creativity as a predictor of creative writing ability.

The Procedure: The sample for this study consisted of randomly selected fourth, sixth, and eighth grade students (N = 300) of the Silver Bay area, a community of 4000 in 'Northeastern Minnesota. These subjects were …

Clustering And Subjective Organization Of Free Recall Learning, Sandra Gail Harrell Fenner

Theses and Dissertations

Two concepts, clustering and subjective organization, have figured prominently in theoretical explanations of free recall learning. With lists composed of categorized words (e.g., animals, vegetables, occupations), subjects tend to order recall by categories, which tendency is called clustering. There is much experimental evidence for a relationship between clustering and amount recalled, as recall and clustering have been shown to increase with repeated presentations of the material. Curiously, there is some evidence that the degree of clustering seems to be uncorrelated with recall scores, that is, subjects who cluster strongly do not recall more words than subjects who cluster less strongly …

Maze Acquisition In The Zinc Deficient Rat, Paige M. Lokken

Theses and Dissertations

Interest in the role played by trace minerals in brain development and the subsequent effect on learning is recent. Biochemically a great number of studies on zinc have been done, but in only one other laboratory have the behavioral consequences of a zinc-deficiency been looked at. The present study attempts to partially replicate the previous studies and to explore the behavioral effect of a zinc-deficiency in a different manner. In the postnatal study, dams were made zinc-deficient from the day of delivery until weaning of the pups occurred (21 days). Paired animals were fed the same amount of food as …

Investment Potential Of Burlington Northern Inc. Common Stock, Donald L. Allen

Theses and Dissertations

The purpose of this paper is to establish objective decision criteria for the advisability of investing funds in Burlington Northern, Inc. common stock for either long-term capital gains, cyclical gains, or speculative profits. The specific problem becomes one of identifying the positive and negative factors which would be used in the market to determine or influence the present and future price and the return on the company's common stock

The data for the study was obtained primarily by library research. Many financial newspapers and periodicals were used as well as information found in other sources. Not just company financial information …

Hotel Accounting, Stanley L. Gehring

Theses and Dissertations

No abstract provided.

Responsibility Accounting: A Better Way To Serve Management, Gary D. Anderson

Theses and Dissertations

No abstract provided.

Councils Of Government: Regional Governments Of Texas, Lawrence E. Henneke Jr

Theses and Dissertations

No abstract provided.

The Accumulated Earnings Tax, Terry Lundberg

Theses and Dissertations

No abstract provided.

A Comparison Of The Responses Of Adults On Two Competing Message Tasks, Jacque I. Schmidt

Theses and Dissertations

The purpose of the study was to compare scores obtained on the Staggered Spondaic Word Test (SSW) with scores obtained on. the speech- in-noise subtest of the Goldman-Fristoe-Woodcock Test of Auditory Discrimination (GFW). Another purpose was to determine test-retest reliability and internal reliability of the GFW. Thirty subjects between the ages of twenty to twenty-four years, eleven months with normal hearing and speech were administered the SSW and the speech-in-noise subtest of the GFW. The GFW was re-administered twenty-four to thirty-six hours following the initial administration. Data were treated with the use of mean, standard deviation and correlation coefficient. Statistical …

The Temperance Crusade In American Fiction, 1830-1860, David H. Vigeland

Theses and Dissertations

The American movement in support of temperance was especially strong from I830 to i860. During these decades, numerous authors used the medium of fiction to convince their readers of the values of abstinence from intoxicants. The purpose of this study is to examine a cross section of this fictional temperance literature in an effort to discover the viewpoints of these writers and to determine the attitudes toward antebellum American society which their works revealed.

In order to investigate more fully the feelings of both the authors and the historically voiceless masses who made their works so popular, such concepts as …

The Effects Of Word Context And Meaning Upon Second Grade Students' Word Recognition Ability, L. Duane Melling

Theses and Dissertations

Purpose of the Study: The purpose of this investigation was to study children's ability to read words presented in isolation or in a meaningful context. Furthermore, this investigation attempted to determine whether differences exist in children's ability to read polysemous words in two settings: (1) when they are used in their most common meaning in a sentence, and (2) when they are used in a less common meaning in a sentence.

Summary of the Procedures: The sample for this investigation was comprised of second grade students drawn from five elementary schools in Grand Forks, North Dakota. Students from seven classrooms …

Freedom And Self-Becoming In Karl Jaspers' Existential Philosophy, Clayton B. Ries

Theses and Dissertations

One of the primary concerns of contemporary counseling literature appears to be the self, to what extent it owes its being to freedom on the one hand, and to environmental influences on the other. This paper does not pretend to resolve so complex an issue. It seeks rather to view the problem x

A Study To Test The Effectiveness Of Time-Out In The Decrease Of Moderate Stuttering, Judy E. Clausen

Theses and Dissertations

The purpose of this study was to examine the effect of time-out from speaking on the frequency of moderate stuttering.

Two parallel single subject studies were carried out concurrently. Two adult moderate stutterers were selected as subjects.

Two sessions of baserate measurement were followed by nine sessions in which 10 seconds of time-out from speaking was made contingent upon the stuttering of Subject A. Subject B was the control subject for the first nine sessions and he received no consequences for stuttering. With session twelve, Subject A became the control and Subject B was required to stop speaking for 10 …

The Relationship Between Self Actualization And Selected Learning Experiences Of Elementary Education Majors Enrolled In The University Of North Dakota's Center For Teaching And Learning, John A. Eiden

Theses and Dissertations

The Problem: The purpose of this investigation was an analysis of the relationship between self actualization and selected aspects of the undergraduate elementary education program of senior students in the Center for Teaching and Learning.

The Procedure: The subjects (N=85) for this investigation were randomly selected from the total group of fulltime undergraduate Center for Teaching and Learning elementary education seniors officially registered as of August 28, 1972. The study was conducted during the fall and spring semesters 1972-73, and had a duration of six and one-half months. Other than preassessment and post-assessment, no special program of activity was required …

Sex Differences In Memory Measured By Signal Detection, Ronald L. Matthew

Theses and Dissertations

The theory of signal detection was used to determine sex differences in recognition memory for a social task using favorable, neutral, and unfavorable statements about men and women. Signal detection affords two measures: d' represents a measure of S's sensitivity (memory) and β a measure of his criterion or willingness to respond based on his memory.

Descriptions of people were scaled by ten men and ten women for degree of favorability. From these items, four lists were constructed and given to twenty male and twenty female undergraduates at the University of North Dakota. The independent variables used in the study …

Cash Management And The Cash Budget, Gerald R. Smith

Theses and Dissertations

No abstract provided.

Is This Good Talking: A Syntax Screening Test Using No Picture Stimuli, Rhonda I. Hilden

Theses and Dissertations

The purpose of this study was to assess a new screening test of syntax involving no picture stimuli and to compare it to a commonly used syntax screening instrument involving picture stimuli. A subsidiary aim was the determination of the relationship between auditory memory and both tests of syntax. Tests used to measure syntactic ability included the Is This Good Talking? (ITGT) test, which includes no picture stimuli and the Northwestern Syntax Screening Test (MSST), which involves picture stimuli. The Auditory Sequential Memory subtest of the Illinois Test of Psycholinguistic Abilities (ITPA) was selected to measure the auditory memory of …

A Comparative Study Utilizing Carpet For Machine Noise Reduction In An Industrial Technology Woodworking Laboratory, Eugene A. Schlomer

Theses and Dissertations

The nature and scope of this study was an experimental research project designed to determine what effect the installation of carpet would have on the redu·ction of potentially harmful airborne and structure-borne noise levels emitted from standard industrial woodworking machines commonly used in school instructional programs

The specific objectives formulated for the study were to (1) determine the feasibility of using carpet as a sound absorbent floor covering material to control the airborne and structure-borne noise emissions from selected woodworking machines, (2) determine the potentially harmful noise levels produced by various woodworking machines, (3) determine what effect the carpet installed …

The Effect Of Haloxon And Thiabendazole On The Free-Living Stages Of Haemonchus Contortus, Gary Mccallister

Theses and Dissertations

This study was undertaken to determine the effect of thiabendazole and haloxon on the free-living stages of Haemonchus contortus and to determine the suitability of the free-living stages for their use in primary drug evaluation for chemotherapy or for chemical control of free-living stages. Cleaned unembryonated ova, embryonated ova, first-, second-, third-, and exsheathed third-stage larvae were exposed to suspensions of 5.0%, 1.0%, 0.5%, 0.25%, 0.12%, 0.05%, and water soluble concentrations of each drug for exposure times of 0.25, 0.50, 1.0, 2.0, 4.0, 8.0, and 16.0 hours at pH 7.0 and 25° C. Survival was assessed by observing any subsequent …

Light And Electron Microscopy Investigation Of Developing Wheat Caryopses Infected By Tilletia, Melvin Douglas Grove

Theses and Dissertations

Caryopses of wheat were studied during infection by Tilletia caries and T. controversa. Initially the pathogens penetrated embryos of the host. After the embryo tissue was consumed by the fungi, endosperm tissue was penetrated and consumed. Initial penetration of endosperm tissue was in localized areas. During infection the fungus mycelium spread intercellularly, but occasionally was seen intracellularly. As the host tissue was consumed teliospores were formed. At maturity a host cell layer 4-6 cells thick remained which retained the mature teliospores. Histochemical studies indicated that carbohydrates and lipids of the host disappeared soon after invasion by the pathogens. Nuclei and …

An Investigation Of The Components Of Platonic And Romantic Heterosexual Relationships, Philip F. Guinsburg

Theses and Dissertations

During the past twenty years, heterosexual relationships have been studied extensively by researchers in the field of interpersonal attraction without the attainment of consistent results (Wright, 1968). Wright (1968) stated that there were two methodological problems with this past research which are the treatment of variables used to explain attraction as both the independent and dependent variables in the same study and the use of dyadic indices. Also, Wright (1969) noted that past research has generally not examined heterosexual relationships separately for each sex. Finally, Guinsburg (1970a) found that most research dealing with heterosexual relationships has only examined the "romantic" …

The Effect Of Tobacco Mosaic Virus Infection On The Activity Of Ribulose-1,5-Diphosphate Carboxylase From Three Varieties Of Lycopersicon Esculentum Miller, Yu-Sun-Kitty Chang

Theses and Dissertations

Control and TMV-infected leaf tissues of three varieties of tomatoes, Marglobe, Moscow and Delicious, were analyzed for Ribulose Diphosphate Carboxylase (RuDPCase). The specific activity of RuDPCase based on protein concentration determined by peak area obtained with the Model E Ultracentrifuge, specific activity of RuDPCase based on protein concentration determined by Lowry's method, total amount of RuDPCase per gram fresh weight, total protein of plant leaves, total chlorophyll, and ratio of Chlorophyll a to Chlorophyll b were determined. Tobacco Mosaic Virus (TMV) infection resulted in an increase in specific activity of RuDPCase and the amount of total protein (at 2 days …

I. An Isothermal Titration Microcalorimeter. Ii. Importance Of Micronutrients In Nutrition. Iii. Zinc Bibliography, John Willard Gardner

Theses and Dissertations

I. An isothermal titration microcalorimeter having a colume of 4 ml and capable of temerature control to ±2 x 10-5°C is described. Major components include a constant temperature water bath controlled to ±3 x 10-4°C, a platinum reation vessel, and an isothermal control circuit consisting of constant Peltier thermoelectric cooling and variable Joule heating controlled by a thermistor in an AC Wheatstone bridge circuit. The calorimeter was tested by measuring the heat of ionization of water and was found to produce data accurate to ± 0.1% where small samples are used such as in the investigation of many biological systems.

The Effects Of Deficiencies Of Certain Mineral Nutrients On The Activity And Various Properties Of Ribulose-1,5-Diphosphate Carboxylase From Barley (Hordeum Vulgare L.), Philip Alan Harrison

Theses and Dissertations

Barley plants grown in Mg, Mn, Zn and Cu deficient media were analyzed for specific activity, total activity and amount of RuDPCase present. Percent dry weight, as well as chlorophyll and soluble protein content were determined. All deficiencies caused lower chlorophyll and RuDPCase concentrations than occurred in the control. Soluble protein content, however, was higher in all deficient plants than in the control, either on a dry or a fresh weight basis. The addition of 18 μM Mn^2+ increased the activity of Mg^2+ containing RuDPCase preparations as much as 133% above normal. The specific activity of RuDPCase from Mg, Mn, …

Fate And Metabolism Of Bas 290-H In A Model Ecosystem, Kuo-Mei Chang

Theses and Dissertations

The use of chemicals to control economic pests has grown in this century both in the amount and the diversity of materials used (Headley and Lewis, 1967). About ten billion pounds of pesticides have been used in the United States since 1945. It is estimated that there are 340 million acres of cultivated lands in the Continental United States. Of this amount, approximately 119 million acres were sprayed with herbicides, 97 million acres were treated with insecticides and 25 million acres were treated with fungicides and other minor pesticides (Matsumura, 1972).