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Fall And Winter Population Study Of The Macro-Invertebrate Fauna Of Lincoln Beach, Utah Lake, With Notes On Invertebrates In Fish Stomachs., Ralph Buckly Brown

Theses and Dissertations

Due to the inconveniences associated with under ice population studies, most aquatic population studies are made during the spring, summer, and fall seasons. Like most lakes little is known about the fall and winter popu-lations of the Utah Lake invertebrates. The purpose of this study is to classify, determine quantitative fall and winter population fluctuations, and obtain life history and ecological information of the macro-invertebrates at . Lincoln Beach, Utah Lake. This lake is the largest, natural occurring body of fresh water in the state and has a high potential for the production of gamefish and water-fowl. As Smart (1960) …

The Effect Of Thiamine And Its Antagonists On Plasma And Tissue Lactic Dehydrogenase In Rats, Dong Hwa Park

Theses and Dissertations

The lactic dehydrogenase activity in plasma and tissues was measured in the thiamine-deprived, the oxythiamine-treated and the pyrithiamine-treated rats as well as the control rats. The lactic dehydrogenase levels of brain and kidney were significantly increased by oxythiamine treatment. The enzyme activity in heart was markedly decreased only in the thiamine-deprived rats. Unlike the above tissues, the enzyme levels in liver were decreased by 29-44 per cent in all three types of thiamine deficiency, However, the enzyme activity in plasma was significantly increased only by pyrithiamine administration. The distribution patterns of lactic dehydrogenase isozymes were electrophoretically examined in these deficiencies. …

Nesting Ecology And Behavior Of The Golden Eagle In West Central Utah, Franz J. Camenzind

Theses and Dissertations

The Golden Eagle Aquila chrysaetos canadensis Linn. is facing extinction in much of its range. In the Western Hemisphere its numbers are restricted primarily to the mountainous regions west of the 99th meridian, from extreme northern Alaska to northern Mexico (Hobbie and Cade, 1962) and from timberline in Colorado to below sea level in Death Valley, California (Summer, 1929a).

History Of Fort Pembina 1870-1895, William D. Thomson

Theses and Dissertations

The unsettled status of the Red River Valley during the 1860's made inevitable the establishment of a military post near the 49^th Parallel. The Minnesota Uprising in 1862 caused a band of Sioux Indians, responsible for the massacre, to flee to Canada to escape punishment by the military. In 1863, a hastily organized battalion established a temporary fort at Pembina to capture the renegades. After accomplishing its mission, the battalion abandoned the post in 1864.

With the end of the Civil War, people looked to the frontier for fertile lands to settle; but the Indian threat kept them out …

The Nonpartisan League : A Quest Of Community, Leonard Wentz

Theses and Dissertations

The purpose of this thesis is the examination and appraisal of the rise and decline of the Nonpartisan League as a mass movement in North Dakota. Previous interpretations have been mostly economic in nature. This study interprets the League members I situation from the socio-psychological view. This thesis will attempt to show the editorial directions of leading newspapers with regard to the agrarian situation from 1916 to 1920.

The procedure involved a study of the sociological conditions of the North Dakota farmers before they accepted the Nonpartisan League ideology. The Nonpartisan Leader's editorial policy was viewed to show its interpretation …

Verbal Discrimination Learning As A Function Of Manipulated Frequency And Length Of Study Interval, David R. Skeen

Theses and Dissertations

The purpose of this pair of studies was to investigate three hypotheses generated by the frequency theory of verbal discrimination learning. The frequency principle suggests that a number of sequential events occur in verbal discrimination learning and that each event in the sequence leads eventually to a greater number of frequency units being associated with the correct alternative in each verbal discrimination unit.

It was hypothesized that an increase in study time would be positively related to acquisition of a verbal discrimination list. Second, it was predicted that discrimination pairs constructed of high frequency stimuli would be more difficult to …

A History Of The Women's Physical Education Department At The University Of North Dakota, Margaret L. Milne

Theses and Dissertations

The purpose of the study was to compile a history of the Women's Physical Education Department at the University of North Dakota. The historical method of research was followed with limited use of the questionnaire technique of research.

The historical method included the collection of data which were grouped into a time and subject sequence. Material x^as criticized and interpreted by accepted historical techniques. This particular method included the treatment of data for cause and effect x-diich permitted the development of patterns for testing of che hypotheses.

A questionnaire x^as developed and sent to select individuals which included former women …

A Survey Of The Status Of Recreation And Parks In North Dakota Cities, Robert Duane Johnson

Theses and Dissertations

This study was designed to gather information pertaining to the status of recreation and parks in North Dakota cities. This study was structured to gain information on park and recreation responsibilities, recreation programs and services, park and recreation facilities and recreation and park financial procedures of cities in North Dakota.

The survey technique was employed in this study. Questionnaires were mailed to cities in North Dakota with a population of 75 or more people. Two hundred and ninety questionnaires were sent out and 215 were returned for a total return of 74.1 per cent.

The findings showed that nearly all …

A Study Of Communication Patterns Of Teachers Using Teacher Aides As Compared To Those Not Using Teacher Aides, Richard W. Kunkel

Theses and Dissertations

Problem. The purpose of this study was to determine whether the use of teacher aides would show any change in teachers' patterns of communication.

Procedure. Teachers of three schools, paired with three other schools by factors such as plant facilities, student enrollment and student/ teacher ratio, served as the control group. The teachers of the three other schools served as the experimental group with teacher aides employed as the criterion measure. Ten trained observers in interaction analysis recorded the verbal classroom behavior of these teachers in the fall and again in the spring of the school term to indicate whether …

Floral Induction In Some Members Of The Umbelliferae In Response To Cold Treatment, Photoperiod, Gibberelic Acid, And Kinetin, A: Glenn Wahlquist

Theses and Dissertations

This study was undertaken to determine the influence of different treatments of temperature, photoperiod, gibberellic acid, and kinetin on the flowering responses of certain biennial species of the Umbelliferae. Seven species were selected for study, namely: carrots, wild carrots, parsnips, wild parsnips, poison hemlock, celery, and parsley.

An Investigation Of A Thyroidal Control Of Water Balance In The Leopard Frog, Rana Pipiens, Scott Mcclung Martin

Theses and Dissertations

A possible thyroidal control of water balance in the leopard frog, Rana pipiens, was investigated by (1) chemically thyroidectomizing intact animals by chronic injections of the goitrogen, 6-n-propyl-2-thiouracil (PTU ), or making animals hyperthyroid with thyroxine injections, and (2) dehydration of the frogs in a flow of air to enhance the rate of water loss through the skin, followed by rehydration in tap water until the animals regained their former weight. Radioiodine was employed in limited studies on the frog thyroid gland to ascertain the effects on thyroidal function caused by PTU. The frogs were dehydrated in desiccators in which …

A Comparison Of Multiple Unit Activity During Classical, Instrumental, And Discrimination Learning Using A Noxious Unconditioned Stimulus, James V. Beardsley

Theses and Dissertations

Multiple unit recording is a relatively new electrophysiological recording technique which records spike potentials from many neurons. In the Halas laboratory and others, systematic changes have been observed during classical conditioning but none under other conditioning procedures . Recently, some have interpreted changes in evoked potentials and multiple unit potentials as due to emotional arousal (fear) and thus related more to a conditioned emotional response (CER) than to conditioning per se. If a CER occurs, and not a learning modification, then during classical aversive conditioning a high sustained neuronal response ought to occur. This would reflect the high degree of …

Regression In A Verbal Conditioning Situation As A Function Of Psychiatric Illness, Perry O. Orwick

Theses and Dissertations

The primary purpose of this study was to investigate regression among psychiatric groups in a verbal conditioning situation. Secondary purposes were to study the conditioning performance of the psychiatric groups and their awareness of the reinforcement contingency.

The actual Ss were 30 male and 30 female patients selected from the resident population of the North Dakota State Hospital. Ss were selected on the basis of the official diagnosis of schizophrenia, psychoneurosis, or personality trait disturbance, age, and months of hospitalization. Sixteen individuals in each of the diagnosis x sex categories were randomly selected to serve in either an experimental or …

An Analysis Of The Marketing Practices Of North Dakota Motels, Kenneth L. Mellem

Theses and Dissertations

This thesis describes and analyzes the marketing practices of North Dakota motels. The data were obtained principally from a survey of selected North Dakota motels. A mail questionnaire was sent to 150 randomly chosen motel and a 43 per cent return was received. The main topics discussed in the thesis are: organization structure, size gross revenue, facilities, advertising methods, location, and room rate policy.

The most common form of ownership of North Dakota motels was the single proprietorship. As this form of ownership usually limits the amount of capital available, most motels in North Dakota were relatively small. Ninety four …

The Position Of The Female Secretary In The United States From 1900 Through 1967: An Historical Study, Elizabeth Shaughnessy Oelrich

Theses and Dissertations

The problem was to trace the development of the position of the female secretary in business in the United States from 1900 to 1967. The paper was divided into five sections; namely, origins of the secretarial position; the secretarial position, 1900-1920; the secretarial position, 1920-1940; the secretarial position, 1940-1967; and secretarial specialties.

The historical research method was used to compile data for each section in relation to descriptions of the position, education and experience required, extensiveness of the position, salary, professionalism, and the effect of two wars, a depression, automation, and specialization.

The bona fide secretarial position has not basically …

Gubernatorial Veto In North Dakota, Charles D. Whiting

Theses and Dissertations

This study attempts to determine the extent that Dakota territorial and North Dakota State governors have exercised the gubernatorial veto. The approach is historical. The development of the gubernatorial veto is outlined, the state constitutional provisions concerning it are presented, and individual performances by governors are indicated. A more detailed account of the veto exercised by the current Governor, William L. Guy, is given.

Dakota Territory was created with the governor having an absolute veto over acts of the legislature. Later Congress granted the legislature the power to override a veto. Ten territorial governors used the veto and a number …

Notes On The Fern Family Matoniaceae From The Western United States, Samuel R. Rushforth

Theses and Dissertations

A Cretaceous fern flora haas been recently discovered near Westwater, Grand County, Utah. Among specimens collected from Westwater are many forms related to extant members of the fern family Matoniaceae. This family was widely distributed geographically throughout most of the Mesozoic Era, and matoniaceous ferns have been collected from several fossil localities in the United States. The Matoniaceae was especially important in the United States during Lower Cretaceous times. Five species, Matonidium brownii Rushforth, Matonidium lanceopennis Rushforth, Matonidium galleyi (Miner) Rushforth, Matonidium americanum Berry em. Rushforth, and Matonidium sp., and one variety, Matonidium brownii var. extenda Rushforth, are considered in …

Dispersal Of Mites Within Apple Trees Of An Abandoned Orchard In Central Utah, Eugene Eldon Nelson

Theses and Dissertations

From January to July, 1967, a study of dispersion and distribution characteristics of Typhlodromus mcgregori Chant, Bryobia praetiosa Koch, and Bryobia rubrioculus (Scheuten) was made in an abandoned apple orchard in Highland, American Fork, Utah and in the laboratory at Provo, Utah. Bryobia praetiosa overwintered on the spurs and the other protected sites and with the advent of spring migrated out of the tree and back onto the cover crop. Coinciding with the movement of B. praetiosa out of the tree was the hatching of winter eggs and maturation of B. rubrioculus primarily on the spurs but as far down …

Ultrastructural Investigations Of Powdery Mildew Of Rose Caused By Sphaerotheca Pannosa (Wallr.) Lev, Ani Clipper Watene

Theses and Dissertations

The purpose of this study was to evaluate the ultrastructural aspects of the host-pathogen relationship between the fungus Sphaerotheca pannosa (Wallr.) Lev. and a susceptible horticultural variety of floribunda rose "Eutin". Attention was given to the penetration of hyphal tubes, and their subsequent development into: haustorial elements in epidermal cells of rose. In addition, changes in the morphology of infected epidermal cells were described. Thin sections of rose leaves infected with S. pannosa were examined in a Hitachi electron microscope, model HS-7, after glutaraldehyde-acrolein fixation, OsO4-uranyl acetate staining, and embedding in Epon plastic. The components of S. pannosa haustoria consisted …

Investigation Of Implicit Methods For Solution Of The Fourier Equation, Kjell Steinar Gundersen

Theses and Dissertations

In recent years there has been an extensive development of finite difference techniques for solution of the transient heat conduction equation due to the availability of high-speed digital computers. It is the purpose of this paper to investigate and compare several implicit methods for the solution of the Fourier equation with regards to truncation error, round-off error and computer time which probably are among the most important factors to be considered in choosing a method.

Studies On The Levels Of Acetylcholine In The Brains Of Thiamine-Deprived And Thiamine-Antagonized Rats, Darwin Leroy Cheney

Theses and Dissertations

Thiamine deficiency has been reported to cause nerve degeneration in the peripheral nervous system and hemorrhage with associated cellular damage in the central nervous system (Prickett, 1934). Koedam (1958) observed convulsions in thiamine-deficient pigeons, but convulsions have only rarely been seen in rats (Gubler, 1961). Rats treated with the thiamine antagonist, pyrithiamine (PTh)* always develop ataxia and convulsions but these neurological symptoms have never been reported in those treated with oxythiamine (OTh), another thiamine antagonist (Gubler, 1961). Hosein, Chabrol, and Freedman (1966) concluded that neurological symptoms occur only when the brain thiamine content is diminished to 2.5%o r less of …

Elevational Occurrence Of The Ticks Dermacentor Andersoni And Dermacentor Parumapertus In Utah County, Utah, William J. Despain

Theses and Dissertations

Considerable research on ticks has been done since it was discovered that the Rocky Mountain wood tick, Dermacentor andersoni Stiles, was a principal vector of Rocky Mountain spotted fevero Additional disease agents of man are also transmitted by D. andersoni. This tick and a closely related species, Dermacentor parumapertus Neuman, occur commonly in Utah. The two species are often closely associated, although D. andersoni is believed to occur in the mountains, whereas D. parumapertus is in the desert valleys. Diseases affecting animals in nature are transmitted by ticks of both species. Consequently, any interaction between the two may be influential …

The Biology And Food Habits Of Typhlodromus Mcgregori Chant (Acarina: Phytoseiidae), Brian A. Croft

Theses and Dissertations

Phytoseiid mites were first studied from an economic standpoint by Parrott et al. (1906), who described the value of Seius pomi Koch in controlling the pear leaf blister mite Eriophyes pyri (Pgst.). The taxonomic and biological studies of Garman (1948), Nesbitt (1951), and Chant ( 1959) stimulated additional interest in phytoseiids as predators, and in recent years they have been studied rather extensively as biological control agents of phytophagous mites.

Development Of The Marital Dissatisfaction Of Mormon College Couples Over The Early Stages Of The Family Life Cycle, Roy H. Marlowe

Theses and Dissertations

This study investigated the relationship between stages of the family life cycle during the early years of marriage and marital dissatisfaction. From this basic goal the following three hypotheses were derived and tested:
I. Marital dissatisfaction for both husband and wife is less in the first stage than in the third stage of the family life cycle.
II. For both husband and wife the ideal spouse concept is the same in stage one as in stage three of the family life cycle.
III. For both husband and wife socially undesirable perceived spouse concepts are greater while socially desirable perceived spouse …

An Experimental Study Of The Effects Of Welding On Cold-Worked And On Heat-Treated Steels As They Correlate To Tempering And Jominy Data, Kiran Patwari

Theses and Dissertations

Since Bernandos of Russia in 1887 applied an electric arc to weld metals, welding has become an important method of fabrication in industry. The ever increasing use of welding on a still widening variety of materials demands m ore and m ore understanding of the basic mechanisms of welding.

Transition From Laminar To Turbulent Flow For Dilute Guar Gum Solutions, Martin L. Palmer

Theses and Dissertations

Solutions of many natural and synthetic polymers have been found to reduce turbulent friction losses in flow through pipes. The basic mechanism causing these reductions is not entirely understood although two general theories have been advanced.

An Investigation Of Column Efficiency And The Relationship To Liquid Phase Distribution On Ultra-Low Loaded Glass Bead Gas Chromatographic Columns, Donald G. Nyberg

Theses and Dissertations

Studies have been made of column efficiencies, extra-column effects, the liquid phase mass transfer term (C_l), and liquid phase distribution at ultra-low liquid loadings on glass bead gas-liquid chromatographic columns. The advantages of using lightly loaded columns are described in detail along with a critical evaluation of the limitations of this liquid phase reduction ad infinitum. Theories have been presented by Giddings^22,23,25,30,32 which predict the mass transfer term (C_l) as a function of two extreme liquid phase distributions. The first equation assumes 100% "capillary" liquid held at the glass bead contact points and represents a very inefficient column. This prediction …

Design Of An Automatically Controlled-Feed, Constant Current Arc Generating Machine For Consumable Electrodes, Dhansukh J. Chauhan

Theses and Dissertations

Good welding research requires accurate control of the variables involved,to achieve consistent results. The variables involved in arc welding are of the dependent and independent type. Control of the independent variables such as arc current, arc voltage and welding velocity is necessary to control the independent variables such as penetration, electrode consumption rate, etc. The purpose of this thesis was to design, develop and test an automatic welding machine which controlled the above variables within the limits required for welding research.

Design Of An Apparatus For Study Of Stress Versus Strain As A Function Of Strain Rate In Plastics, Ashok B. Choksi

Theses and Dissertations

As new materials are developed, it is essential to study their mechanical properties experimentally. It is easy to find properties like ultimate strength, yield strength, hardness, etc., using standard techniques. It is not possible to observe the tensile behavior of materials at high strain rates using standard equipment. Plastics are often subjected to tensile loads at various rates of loading, such as when they are used to absorb impact.

The Effects Of Force Feeding On The Levels Of Pyruvate, Glucocorticoids And Glucose In The Blood And On Adrenal Weight In Thiamine-Deprived And Thiamine-Antagonized Rats, Ronald Adams Bitter

Theses and Dissertations

The discovery of a substance in rice polishings that was useful in preventing beriberi was first shown by Grijns and Vedder (Wuest, 1962). In 1926, Jansen and Donath (Wuest, 1962} crystallized this substance which was subsequently synthesized independently by Williams and Cline (1936} and Grewe (1936). This substance was named thiamine by Williams (1936) because of its structure having the vital thiazole ring and because it was an "essential amine."