Digital Commons Network^™

Asexual Reproduction In Planaria Studies On Inhibition, Hal R. Fitzgerald

Theses and Dissertations

The invertebrates display several methods of asexual reproduction, such as fission and gemnule formation and budding (Hay, 1966). Planaria reproduce asexually only by fission.

The Conception Of Nationalism In Elementary School Children Of North Dakota, Robert A. Wheeler

Theses and Dissertations

The major purpose of this study was to determine when children can internalize concepts concerning home, state, and nation.

Educators and psychologists have not in the past worked in harmony as new curricula and methodologies have been developed. It was the intent of this research to provide statistical data and verbal comparisons on selected research questions to determine the effect of children's chronological age on the ability to generalize social studies concepts.

The following research questions were investigated:

1. Do North Dakota elementary students differ from Swiss Children investigated by Piaget in their concept of nation?

2. Do North Dakota …

Aquatic And Semi-Aquatic Plant Communities Of Utah Lake, Robert E. Coombs

Theses and Dissertations

The aquatic and semi-aquatic plant communities of Utah Lake, Utah County, Utah are discussed. This discussion includes the methods of describing and delimiting the major vascular plant communities, the descriptions of the present existent communities, and the determination of the vegetational changes, particularly since 1925. The vegetation around Utah Lake is divided into plant communities. Each community is discussed using: (a) quantitative data, (b) field observations, (c) general and specific locations of the community, and (d) interrelationships and trends of the community. Historical vegetational changes of Utah Lake plant communities are discussed. In this discussion, the plant communities described by …

Ornamentation Of Italian Vocal Music Of The Eighteenth Century According To Pietro Francesco Tosi And Giovanni Battista Mancini, Beverly Ann Brandon

Theses and Dissertations

The acclaim and recognition attributed to the musical performers of the eighteenth century are reflected in the title Bel Canto ascribed to this period. The contemporary musical scene reveals performances attempting to perpetuate the virtuosity of the performers of this period and to recapture their style. Unfortunately, the aura of legend and mystery surrounding the performance of music of this period frequently leads to confusion and frustration of both teacher and performer rather than to understanding. This study addresses itself to that problem.

Tosi and Mancini were active participants in this period and their theory, technique of performance, and pedagogical …

A Comparative Study Of The Head And Thoracic Osteology And Myology Of The Skinks, Eumeces Gilberti Van Denburgh And Eumeces Skiltonianus (Baird And Girard), David F. Nash

Theses and Dissertations

Further clarification of the taxonomic and phylogenetic relationships of Eumeces gilberti and Eumeces skiltonianus is achieved by the comparisons of the skull, mandible elements, and the anterior myology of these two species. Figures are provided to compliment the descriptions. The study confirms their close relationship and few differences are observed. E. skiltonianus, however, appears to have more anatomical plasticity which suggests that E. gilberti may have arisen from the former.

Preparation Of New Amino-, Thio-, And Sulfonyladamantane Derivatives, Joseph Craig Argyle

Theses and Dissertations

Various synthetic schemes were used to prepare a number of new amino-thio- and sulfonyladamantane compounds. By a nucleophilic substitution on 1-bromoadamantane, 1-(p-nitrophenylthio)adamantane was prepared from p-nitrothiophenol; the amino- and sulfonyl- derivatives of this compound were also prepared. Silver tosylate was used to generate the 1-adamantyl carbonium ion from 1-bromoadamantane in a synthetically useful procedure for preparing 1-adamantylamides from nitriles. Three 1-(1-adamantylcarbinyl)-2,5-dialkylpyrroles were prepared by Knorr-Paal reactions and reduced to the corresponding pyrrolidines. Thio- and aminomethyl 1-adamantyl ketones were prepared from methyl and bromomethyl 1-adamantyl ketones, respectively. Aliphatic and aromatic oxiranes were reacted with 1-aminoadamantane in a bomb at elevated temperatures …

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 …

Attitude Change In Relation To The Primacy-Recency Problem And Retention-Acceptance Factors, Barry L. Johnson

Theses and Dissertations

In attempting to persuade people, it is still not clear whether information presented first (primacy) or information presented last (recency) is more influential. Miller and Campbell (1959) found a primacy effect when they utilized a one week delay prior to obtaining a measurement with their post-test. They also obtained a measure of retention and found that this did not account for the attitude change. They agreed with Hovland (1957) that acceptance factors might be affecting the final opinion change.

This study attempted to clarify the role played by retention and acceptance factors on primacy-recency effects. A one week delay was …

Differential Behavior On Skill And Chance Tasks As A Function Of Perceived Locus Of Control, Michael D. Paulson

Theses and Dissertations

This investigation was designed to examine differences in behavior that may exist between internals and externals on skill and chance tasks. Since internals should be more motivated in a skill task, it was hypothesized that they would show more trials to extinction, more frustration, and more arousal in acquisition and extinction on the skill task than externals. Since externals should be more motivated on a chance task, it was hypothesized that they would show more trials to extinction, more frustration, and more arousal in acquisition and extinction on the chance task than internals.

Subjects were pre-selected on the basis of …

Calorigenic Effects Of Thyroxine And Triiodothyronine On Rat Diaphragm., Robert Lee Chambers

Theses and Dissertations

Since the isolation of triiodothyronine (T3) by Pitt-Rivers and Gross (1953) several questions as to its role as a thyroid hormone arose. Does T3 have the same or different actions than that of thyroxine (T4 )? Is T3 an emergency hormone, since its synthesis relative to T4 is greatly increased during periods of low iodine intake and its response time is I/5th that of T4 (Ackerman and Arons, 1958)? Are there any interactions modifying their respective actions?

The Synthesis And Properties Of New Potentially Chemotheraputic [Sic] Pteridine Derivatives, Walter Wesley Parish

Theses and Dissertations

A new general synthetic method for the preparation of 6-thiopteridines has been developed. The method involves the addition of thiols to intermediate pyrimidine nitrones formed in situ by the reaction of 4-amino-5-nitrosopyrimidines with pyridinium-activated acetonitriles, acetates, acetophenones, and other methylketones. Ca. forty new pteridines were prepared by this method. The preparation of six new 6-pteridinyl ketones, two new 6- pteridinyl ketone thiosemicarbazones, and two new 6-sulfonylpteridines and their 4-acetamido derivatives is also reported. 4-Acetamido-2- amino-7-phenylpteridine 5-oxide was prepared by the reaction of 2- amino-4,6-diacetamido-5-nitrosopyrimidine with either phenylsulfonyl-acetophenone or phenacylpyridinium bromide. Evidence relating to the structure of the acylated 4-amino-5- nitrosopyrimidines …

A Feasibility Study Of The Application Of Bondgraph Modeling And Computerized Nonlinear Model Parameter Identification Techniques To The Cardiovascular System, Randall L. Taylor

Theses and Dissertations

Recent years have witnessed an increasing trend for people in the medical and engineering professions to couple their talents in a more united effort to better understand the functioning of the human body. This union of technologies has meant the introduction of new viewpoints and techniques in the field of physiological research. The engineers' basic tool, mathematical modeling, has perhaps been one of the most noticeable additions. There has been a significant amount of work done in recent years along these lines of deriving mathematical models to express the functioning of a subsystem of the body, and then, using analog, …

A Survey Of The Helminth Parasites And Coccidia Of Cattle And Sheep In Utah Valley, Joseph Carl Fox

Theses and Dissertations

A survey of gastro-intestinal parasites in cattle and sheep in Utah Valley was conducted. Cattle in the valley were not seriously parasitized by helminths, whereas sheep usually had heavy helminth infections. Ten genera of helminths and 8 species of coccidia were identified in cattle in the valley, and 14 genera of helminths and 8 species of coccidia were identified in sheep. In conjunction with the survey, meteorologic studies were conducted May through September, 1909, to ascertain the effects which irrigation had upon micro-environments on grass pastures in relation to the development of free-Iiving stages of gastro-intestinal nematodes of ruminants. The …

Taxonomy And Ecology Of Fungi Imperfecti From Four Locations In Utah Lake, Utah Co., Utah, Laird Max Hartman

Theses and Dissertations

Fungi imperfecti were cultured from water and bottom sediment samples collected at four locations of Utah Lake. These study sites included: (a) The mouth of Provo River, the largest fresh-water tributary entering Utah Lake, (b) Mud Lake, a large shallow area known for its high nitrogen content, (c) the entrance of the Spanish Fork River into the lake, a large fresh-water tributary containing wastes from industry and agricultural enterprises, (d) Jordan River, the only natural outlet of Utah Lake. One hundred and thirty-eight species of fungi imperfecti were identified. A total of 89 species were isolated from the Spanish Fork …

Changes With Growth In Selected Body Proportions Of The Woundfin Minnow (Plagopterus Argentissimus Cope: Cyprinidae), Edward James Peters

Theses and Dissertations

In this study 883 specimens of the woundfin minnow (Plagopterus argentissimus Cope) from the Virgin River in Utah, were weighed and measured. Ratios of body measurements to standard length, and gonad weight to total weight were calculated. From the gonad weight:total weight ratios it was determined that woundfins spawn during a period from April through June, and that the first significant gonad development is during the third year of life. Several body proportions such as, snout length, gape, upper jaw length and peduncle depth grew nearly isometrically. Growth of other body proportions was more or less allometric. Head length, body …

The Effect Of Alternate Year Rest Rotation Grazing On Carbohydrate And Nitrogen Reserves In Crested Wheatgrass, James B. Wood

Theses and Dissertations

A field and laboratory study was made to determine the effect of alternate year rest rotation grazin in stem bases and root crowns of crested wheatgrass. Analyses for carbohydrate reserves and total nitrogen were made for the following treatments: (1) exclosures; (2) open range; (3) agronomy cages. Both carbohydrate concentration and total nitrogen content showed differences between sampling dates but did not show differences as a result of grazing treatment on individual dates. Differences between sampling dates were associated with season and growth stage of plants. Although differences due to grazing teatment were not shown for individual dates the combined …

A Study Of The Fine Structure Of Perinotochordal Microfibrils In Normal And Enzyme-Treated Chick Embryos., Richard G. Frederickson

Theses and Dissertations

No abstract provided.

The Biological Regulation Of Copper Homeostasis In The Rat., Gary William Evans

Theses and Dissertations

No abstract provided.

A Study To Test The Effectiveness Of A Timeout Mask In Controlling Misarticulation In Reading, Nancy L. Mahlum

Theses and Dissertations

No abstract provided.

The Influence Of Family Culture On School Related Interests And Activities On 9th-12th Graders In An Urban Community : A Replication, James R. Reynolds

Theses and Dissertations

No abstract provided.

The Search Motif In Frederick Philip Grove's A Search For America, Richard Reginald Ottenbreit

Theses and Dissertations

No abstract provided.

Oral Language Development And Its Relationship To Reading Ability, Mary H. Larson

Theses and Dissertations

No abstract provided.

Immunochemical Properties Of Walker 256 Carcinoma Histones, Henry William Spencer

Theses and Dissertations

No abstract provided.

An Application Of Pattern Recognition Techniques To Animal Activity Measurement, Dennis W. Hodges

Theses and Dissertations

No abstract provided.

Thermal Regulatory And Cardiorespiratory Responses In The Rat Exposed To Controlled Hyperbaric Environment, Larry Stetzner

Theses and Dissertations

No abstract provided.

Enzymes Involved In Gluconeogenesis In Rabbit Liver, Kathleen A. Ebert

Theses and Dissertations

No abstract provided.

The Ultrastructure Of Intranuclear Annulate Lamellae In The Giant Cells Of The Albino Mouse Chorioallantoic Placenta, Robert S. Pope

Theses and Dissertations

No abstract provided.

Fleas From Citellus Tridecemlineatus And Their East-West Distribution In North Dakota, Robert F. Kinzel

Theses and Dissertations

No abstract provided.

The Action Of Alcohol On The Peripheral Nervous System As Determined By Changes In The Electroencephalogram, Ronald A. Szymankowski

Theses and Dissertations

No abstract provided.