Digital Commons Network^™

A Comparison Between Boys' Interscholastic Sport Programs And Girls' Interscholastic Sport Programs In The High Schools Of The State Of Minnesota, Susan L. Brewer

Theses and Dissertations

No abstract provided.

Organization Of The Elementary And Junior High Media Center At Carrington, North Dakota, James Lyle Oshanyk

Theses and Dissertations

No abstract provided.

Salinity Tolerance And Osmoregulation In Two Species Of Euryhaline Teleosts, Culaea Inconstans (Kirtland), And Fundulus Diaphanus (Lesueur)., Robert Armas Ahokas

Theses and Dissertations

No abstract provided.

Hydrogeology Of A Sanitary Landfill, Mandan, North Dakota, Raymond D. Butler

Theses and Dissertations

The data from this study can be applied to much of southwestern North Dakota because the geologic and climatic conditions are similar.

The Mandan landfill is on the Heart River floodplain and next to the river on the north and steep valley wall on the south. The sanitary landfill bas been used for over 20 years.

The only pre-Pleistocene unit exposed is the Cannonball Formation, which is interbedded sand, silt, and clay. Quaternary units consist of till, fluvial sand, silt, clay, and gravel, and eolian sand and silt.

A local flow system recharges on the upland next to the valley …

An Historiographical Study Of The Rise Of National Socialism In Germany, Douglas M. Wills

Theses and Dissertations

No abstract provided.

Effects Of Ethanol On Amino Acid Absorption By The Rat Small Intestine, Craig B. Fabel

Theses and Dissertations

No abstract provided.

An Electronystagmographic Study Of Post-Rotatory Nystagmus Duration, Number Of Beats And Frequency In 10 Atmospheres Absolute Helium And Oxygen And During Decompression, Clyde B. Jensen

Theses and Dissertations

No abstract provided.

The Mutagenicity Of Ddt In Laboratory Mice, Kenneth D. Larsen

Theses and Dissertations

No abstract provided.

Effect Of Ethanol On Phospholipid Metabolism, R W. Bryan

Theses and Dissertations

No abstract provided.

The Fine-Structure Of The Developing Chorioallantoic Placenta Of The Mouse., Robert Scott Pope

Theses and Dissertations

No abstract provided.

Some Ecologic Relationships In An Anaerobic-Aerobic Experimental Waste Treatment System., Gordon M. Fillipi

Theses and Dissertations

No abstract provided.

The Economic Development Of Moab, Utah, Gary W. Booher

Theses and Dissertations

Moab, located in southeastern Utah, began as an agricultural village, in accordance with the economy of early Utah. However, Moab's growth was limited by a restricted physical site. The purpose of this study is to trace the development of the economic functions of Moab in relation to its resource base. Despite the physical limitations of the area, agriculture remained the chief economic activity up to the mid-twentieth century. Periodic booms in speculative mining were only temporary and not significant to the permant economy of the community.

However, in the 1950s, a spectacular uranium boom brought unprecedented growth to the town. …

The Molecular Nature And Replication Of R Factor 222 In Proteus Mirabilis, Dennis Jon Kopecko

Theses and Dissertations

The molecular nature and replicative behavior of R factor 222 was examined in Proteus mirabilis . In deoxyribonucleic acid (DNA} from R+ P. mirabilis , R factor 222 was identified by CsCl density gradient centrifugation as 2 satellite DNA bands at densities corresponding to 50 and 58 moles percent guanine plus cytosine (% GC) . Replication of the 50 and 58% GC components of R factor 222 in P. mirabilis was analyzed during growth in the presence and absence of chloramphenicol (CAM} and after shifting exponentialand stationary- phase cells to conditions which inhibit host protein or DNA synthesis . CAM …

Studies Of Teratogenic Viruses: Minute Virus Of Mice And Colorado Tick Fever Virus, Robert Eldred Harris

Theses and Dissertations

Studies were conducted in DUB/ICR mice with minute virus of mice (MVM), a single stranded DNA virus, and Colorado tick fever (CTF) virus, a double stranded RNA Virus, to determine if CTF virus had teratogenic potential and to characterize further MVM and its teratogenic effects. MVM is a known teratogen, whereas CTF virus had never been investigated previously for teratogenic potential.

In characterization studies of MVM infectivity, the following were determined: (a) Rat embryo cells proved to be superior to six cell lines in assaying for MVM infectivity; (b) MVM infectivity could be inactivated with common laboratory disinfectants, ultraviolet radiation, …

The Des Moines Rapids: A History Of Its Adverse Effects On Mississippi River Traffic And Its Use As A Source Of Water Power To 1860, Donald L. Enders

Theses and Dissertations

During the 19th Century, the Mississippi River was the chief commercial highway in the United States. But for two impediments, the Upper and Lower (Des Moines) Rapids, its entire course of 2400 miles would have offered an untroubled thoroughfare to watercraft.

The federal government, as well as private concerns, attempted throughout the better part of that century to alleviate the river of its barriers and to develop its rapids as a source of power. Those attempts were disappointingly unsuccessful, however, and not until the advent of the 20th Century, when the nation had matured both economically and technologically, was the …

A Study To Determine The Understanding Of The Nature And Mission Of Jesus Christ By Third Year Seminary Graduates Of The Church Of Jesus Christ Of Latter-Day Saints, Terry R. Baker

Theses and Dissertations

The purpose of the study was to determine what degree of understanding third year graduates of the SLVN Seminary District had of the nature and mission of Christ.

The study was composed of a random sample of 200 third year seminary graduates. Each participant answered a questionnaire designed to test his understanding of the nature and mission of Christ. The responses were tabulated and presented in written and illustrative form.

The students met the minimum established standard of 75% in four of the five concepts which they were questioned concerning the nature of Christ. The students met the minimum established …

Fleas (Siphonaptera) Associated With Small Mammals Of Morocco Their Distribution And Host-Specificity, Michael W. Hastriter

Theses and Dissertations

A total of 9,936 fleas, representing 27 species, have been processed for study and identified. They were associated with 2,011 small mammals, representing 38 species, collected throughout Morocco from October 12, 1969 to July 20, 1970 by personnel of the Smithsonian Institution. Two species, Synosternus cleopatrae pyramidis (Rothschild and Xenopsylla ramesis (Rothschild), comprised 68 percent of the fleas collected. Two subspecies are described: Ctenophthalmus andorrensis opistolatus, ssp. n. and Ctenophthalmus russulae tangerensis, ssp. n.. There are three ecological subdivisions of Morocco: the coast and coastal plains, the Atlas Mountains, and the pre-saharan desert. Even though there is some overlap, the …

The Effect Of Insect Damage On Indian Ricegrass (Oryzopsis Hymenoides) In Western Utah, Luis S. Guerra

Theses and Dissertations

Indian ricegrass at the Desert Range Experiment Station forty-seven miles west of Milford, Utah, is damaged by the larvae of Coenchroa illibella, Diatrae sp. and Typoceris ceraticornis, the latter being the most destructive. The biology of the insects and the extent of damage inflicted are discussed. Uninfested plants produced more new stems than infested plants. Plants having a basal diameter of 4 to 6.9 cm and 7 to 9.9 cm were the most frequently infested and, consequently, the most severely damaged.

Attitudes And Behavior Of Educators Involved In Confluent Teaching, Martin M. Koller

Theses and Dissertations

The study attempted to clarify the relationships between expressed attitude and observed teacher behavior. The purpose was to find positive ways of causing educators to incorporate cognitive and affective processes into their educational activities. At the same time, ways of meeting student needs in a confluent setting were sought.

The review of the literature provided relevant information already available through the efforts of other researchers. A multidiscipline approach in this review resulted in several conclusions:

1. Certain bio-self needs result in feelings that cause behavior.

2. Feelings and learning can be correlated so that behavior change takes place.

3. Learning …

An Analysis Of The Effects Of In-Service Science Assistance On Elementary Teacher And Student Attitudes And Practices, Douglas A. Degroote

Theses and Dissertations

Problem: The purpose of this study was to determine whether in-service science assistance will affect positively the attitudes and practices of elementary teachers and students.

Procedure: The investigator designed and implemented a six month in- service science program for elementary teachers and students. The study population consisted of 12 first through sixth grade teachers and their 313 pupils in one elementary school in East Grand Forks, Minnesota.

Change in attitudes and practices of teachers was measured by comparing pre-test and post-test scores on the Actual Science Classroom Environment instrument, which was designed to determine what types of activities teachers perceived …

The Effects Of Different Gases On Excystation Of Coccidian Oocysts, James B. Jensen

Theses and Dissertations

Excystation of coccidian oocysts is a diphasic process where CO2 and suitable reducing agents cause changes in oocyst wall permeability (phase I) allowing the entrance of trypsin and bile which activate the sporozoites (phase II). This project was an indirect study of the mechanism of CO2 action by the substitution of NO, NO2, N2O, H2S, SO2 , CH4, NH3 and 8M urea in place of CO2. Changes in oocyst wall permeability of Eimeria stiedae, E. bovis and E. tenella were determined by incubation with the reagents and cysteine HCl followed by treatment with trypsin and bile to initiate activation of …

The Influence Of The Horse In The Upper Midwest Between 1800 And 1970, Linda Price

Theses and Dissertations

This thesis traces the development and influence of the horse in the Upper Northern Plains between 1800 and 1970, The horse became one of the many instruments used to open this region.

The story of the horse in the Upper Midwest of the United States began with the Indian, When the horse reached this region after 1750, he became a definite influence on the Indian culture. Once the Indian domesticated the horse he shifted his economic emphasis from gathering and gardening to the nomadic pursuit of the buffalo. The Indian and the horse formed a perfect unit in both the …

Bionomics And The Influence Of Diet Upon The Maturation Of Orchopeas Leucopus (Baker), Lynden Phillip Baum

Theses and Dissertations

Knowledge of the bionomics of plague vectors, es-pecially factors which influence life history, host pre-ference, and fluctuations of flea populations, are basic to an understanding of plague ecology. Orchopeas leucopus (Baker), an ectoparasite of cricetid rodents such as Peromyscus maniculatus (Wagner), and Peromyscus truei (Baird), is a vector of plague in the western United States (Holdenried and Morlan, 1955). In a study of nine biotic corrnnunities in the Utah portion of the Great Basin, P. maniculatus was the most abundant rodent in seven of the biotic corrnnunities (Olsen, 1966). Because of the ubiquitous nature of P. maniculatus an interchange of …

A Genetic Study Of Gigas Atriplex Canescens, James Michael Melby

Theses and Dissertations

A population of Atriplex canescens (Pursh) Nutt. (fourwing saltbush), endemic to the Little Sahara Sand Dunes near Jericho, Utah, appears to be genetically distinct from all other forms of this species. It differs from other populations by many characters, including growth rate, seed size, and height (Figures 1, 2, 3 and 4). This is a report of a study which was made to investigate the differences between the sand dune and normal populations, and an attempt to determine the evolutionary processes involved in the formation of the sand dune population.

Population Dynamics Of Fleas (Siphonaptera) On The Uinta Ground Squirrel, Spermophilus Armatus Kennicott, Dennis I. Anderson

Theses and Dissertations

The Uninta ground squirrel, Spermophilus armatus Kennicott, is the most abundant diurnal rodent in the Wasatch Mountains at the 7,000-9,000 foot level particularly in the campgrounds and picnic areas. Contact between man and the Uninta ground squirrel may be hazardous inasmuch as the causative agent of plague has been isolated from S. armatus and its flea parasites (Public Health Reports, 1937, 1938a, 1938b; Meyer, 1938; Byington, 1940; Allred, 1951; and Beck, 1955). Since these fleas are vectors of sylvatic plague and potential vectors of human plague, detailed knowledge about their population dynamics is desirable.

Embryology And Larval Development Of Acteon Punctocoelata (Carpenter) (Gastropoda, Opisthobranchiata), Scott E. Brown

Theses and Dissertations

Acteon (Rictaxis) punctocoelata (Carpenter) is a primitive opisthobranch mollusc found sporadically in central California bays. The primitive nature of this genus is indicated both geologically and morphologically (Fretter and Graham, 1954 and Morton, 1958). This micro-phagous browser burrows just below the surface of the sandy mudflats, as do its close relatives Harninea, Scaphander, and Philine (Fretter and Graham, 1954). Its strong, sculptured external shell is approximately 1/2 inch long and is encircled with narrow black· bands that follow the whorls around the white shell (Fig. 1).

Lipids Of Fungal Spores, Identification And Metabolism, Jim L. Bushnell

Theses and Dissertations

The lipids of the spores of the Basidiomycetes: Ustilago bullata, Lycoperdon perlatum and Calvatia gigantea were investigated. The spores of U. bullata were found to have hydrocarbons ranging from C_9 to C_24, methyl esters of fatty acids ranging from C_14 to C_24, and free fatty acids from C_14 to C_24. The spores of L. perlatum were found to have few hydrocarbons (C_22 being the predominent one); no methyl esters were detected and the fatty acids were from C_15 to C_18. Long chain aldehydes (C_30) were also detected in low concentration. At the ultrastructural level the Lycoperdon spores were found to …

The Origin And Differentiation Of The Thrombocytes Of The Chicken (Gallus Domesticus), Thomas M. Mcneilis

Theses and Dissertations

Blood smears and bone marrow smears obtained from sixteen White Leghorn chickens varying in age from five to seventy days after hatching mere stained with Wright's stain, and histological sections of the bone marrow mere stained with Maximow's eosin- azure II stain.

This study of the origin and differentiation of the definitive series of thrombocytes has yielded information that confirms the work of Lucas and Jamroz (19S1) which shows that the thrombocytes are a separate series of blood cells that have an origin independent of the origin of all other blood cells.

The earliest identifiable cell of the definitive thrombocyte …

A Revision Of The Genus Sphaeralcea (Malvaceae) For The State Of Utah, Jane Ardis Murray Jefferies

Theses and Dissertations

It is the attempt of the present writer to present a concise picture of the genus Sphaeralcea as it occurs in the state. Descriptions, a specific key, distribution maps, illustrations and pertinent synonomy are presented.

Laboratory Rearing, Development And Cytogenetics Of Orchopeas Leucopus (Baker), Robert Francis Allen

Theses and Dissertations

Vector control is fundamental to the suppression and/or eradication of many endemic and epidemic diseases affecting man. The discovery and widespread application of insecticides in vector control programs focused early attention on studies revealing ecological and behavioral characteristics of arthropod vectors. As a consequence of this emphasis, few attempts were made to investigate arthropod cytogenetics. However, recent recognition of the deleterious effects of highly persistent insecticides on the environment and the development of insecticide resistance by vectors of human disease have established the importance of cytogenetics as a base on which programs for control of vector populations may be built …