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Keresan Myth And Tradition In The Writings Of Leslie Silko, Bernita L. Krumm Mar 1985

Keresan Myth And Tradition In The Writings Of Leslie Silko, Bernita L. Krumm

Electronic Theses and Dissertations

As a child of mixed ancestry growing up on the Laguna Pueblo Indian reservati6n in New Mexico, Leslie Marmon Silko listened to the elders in her family repeat the tales told and retold since the beginnings of Laguna history. She remembered these stories rich in Pueblo myth and tradition and has herself retold them in poetry, story, and novel. In so doing, she has become a part of “the whole story / the long story of the people.” Born in 1948 in Albuquerque, New Mexico, Leslie Marmon Silko was educated at Laguna and in public schools. She graduated from the …

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Evaluation Of Gravel Excavation On Ground Water Movement And Quality, Nilaksh Kothari Mar 1985

Evaluation Of Gravel Excavation On Ground Water Movement And Quality, Nilaksh Kothari

Electronic Theses and Dissertations

The resource ground water is used by nearly one-half the nation's population for drinking purposes, and 70% of all ground water used is for irrigation. Yet, surprisingly protection of the ground water resource is not covered by a single federal act. Consequently, ground water is a subject of widespread misconceptions. These misconceptions have adversely affected the development, conservation and quality of the ground water. In the mining areas detailed information on the hydrologic environment is needed due to recent mining regulations. In Brookings county of South Dakota, large scale gravel excavations have occurred during the last twenty years. These excavations …

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Distribution Of Algae In Eastern South Dakota Wetlands, James D. Kreitlow Mar 1985

Distribution Of Algae In Eastern South Dakota Wetlands, James D. Kreitlow

Electronic Theses and Dissertations

One hundred and forty algal samples were collected from 52 wetlands in eastern South Dakota to address the following objectives: 1) to inventory the algae occurring in eastern South Dakota wetlands. 2) to classify algal samples into wetland habitat types according to the wetland classification system of Cowardin et al. (1979). 3) to statistically determine if the composition of algal populations differed significantly among different habitat types. 4) to statistically determine if the taxa of algae obtained within the same habitat type differed according to differences in pH, conductivity, alkalinity and sampling method. 5) to determine the percent frequency of …

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Agricultural Lender Attitudes On Farm Finance Management Programming By The Cooperative Extension Service, Diane Kolmer Mar 1985

Agricultural Lender Attitudes On Farm Finance Management Programming By The Cooperative Extension Service, Diane Kolmer

Electronic Theses and Dissertations

Deteriorating farm financial conditions, plus the new emphasis on farm survival, caused many rural citizens and leaders to raise many questions about the current level of financial stress among producers. These citizens and leaders also questioned what action could be taken by the CES to address the current farm financial crises. The scope of this thesis is to survey the approximately 350 agricultural lenders in South Dakota. Senior agricultural loan officers for the state's lenders were chosen as the target clientele. because they are the most familiar with the current financial health of the state's agricultural borrowers. Banks, FmHA, Production …

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A Comparison Of Type Of Birth, Breed Of Sire, Postweaning Nutrition, And Age Of First Breeding On Lifetime Lamb And Wool Production In Range Ewes, Steven M. Kappes Mar 1985

A Comparison Of Type Of Birth, Breed Of Sire, Postweaning Nutrition, And Age Of First Breeding On Lifetime Lamb And Wool Production In Range Ewes, Steven M. Kappes

Electronic Theses and Dissertations

Due to present economic pressures, sheep producers must utilize every management tool in the most profitable manner. Therefore, many traditional practices must be reevaluated. Research has indicated that some possible areas to improve lamb and wool production are in the use of crossbred ewes, breeding ewes to lamb at 1 yr. of age, feeding a high level of postweaning nutrition, and selection for twins, lamb production, wool production, longevity, and lifetime production. Research is usually performed at experiment stations where the conditions are not typical of those found for commercial operations and therefore may affect the application of the results. …

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The Relationship Between Obesity And Fertility In The Lethal Yellow Mouse (Ay/A; C57bl/6j), Kim William Jeppesen Mar 1985

The Relationship Between Obesity And Fertility In The Lethal Yellow Mouse (Ay/A; C57bl/6j), Kim William Jeppesen

Electronic Theses and Dissertations

The lethal yellow gene, (Ay) is a genetic mutation in mice which causes a number of defects. First described in 1905 by Cuenot, the Ay/- mouse has been the subject of one hundred or more studies. Yet, primary genetic and molecular lesions caused by Ay remain unknown. Cuenot reported that Ay caused three aberrant phenotypic alterations; these included yellow coat color, obesity, and embryonic lethality in Ay homozygous embryos (Ay/Ay). Since 1905, a number of other Ay-induced abnormalities have been reported. Among these aberrations is Ay-induced reproductive senescence. It is this particular Ay character (i.e. reproductive failure of Ay/- mice) …

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Effects Of Mechanical Scarification On Germination And Emergence Of Switchgrass, Nancy Kay Jensen Mar 1985

Effects Of Mechanical Scarification On Germination And Emergence Of Switchgrass, Nancy Kay Jensen

Electronic Theses and Dissertations

Switchgrass, Panicum virsatum L., is a tall, perennial, warm-season, sod-forming species native to most of the United States east of the Rocky Mountains. It is an important species for livestock in the Great Plains, producine its greatest growth in the hot summer months when cool-season species are nonproductive. As it is native to the Great Plains region, it exhibits ecotypic adaptability and forage production potential over a wide range of environmental and growing conditions. Because of its rhizomatous growth habit and fibrous root system, it is also useful. for soil conservation purposes. One of the problems associated with establishing native …

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Plasma Pepsinogen Test For Hypobiotic Nematode Larvae In Abomasal Glands Of Sheep, Richard Alex Jensen Mar 1985

Plasma Pepsinogen Test For Hypobiotic Nematode Larvae In Abomasal Glands Of Sheep, Richard Alex Jensen

Electronic Theses and Dissertations

The American Association of Veterinary Parasitologists reported that nematodes in sheep represent an unquestionably great production loss, and that the absence of deworming on a routine basis would hamper modern sheep production. After ingestion, the infective third stage larva, or L3, exsheaths and burrows into the digestive glands, and becomes a fourth stage larva, or L4. According to Armour, 18 to 21 days after L3 ingestion occurs, the nematode reaches sexual maturity. However, while in the gastric glands, these L4 invade the parietal, or hydrochloric acid (HCl) secreting cells, damaging them, and replacing them with non-acid secreting cells. This leads …

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Factors Influencing Stored Oat Insect Populations In Eastern South Dakota, Jack Adrian Ingemansen Mar 1985

Factors Influencing Stored Oat Insect Populations In Eastern South Dakota, Jack Adrian Ingemansen

Electronic Theses and Dissertations

South Dakota has been one of the top two states in oat production over the past five years. During this time South Dakota’s average production was 12,914,036 quintals (88,784,000) bushels. The eastern one-fourth of the state and western Minnesota as well are known for the production of good quality and high test weight oats. Because of the high production in this region, much of the oats is marketed for a premium to millers and racehorse feed packers. It is estimated 10-15% of the total production in South Dakota is used for these two industries. Oats delivered to the elevator containing …

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Influence Of Gestation Energy On Large White X Landrace Sow Productivity, Mary Kaye Hoppe Mar 1985

Influence Of Gestation Energy On Large White X Landrace Sow Productivity, Mary Kaye Hoppe

Electronic Theses and Dissertations

Currently, the swine industry is emphasizing productivity from farrow to finish. Production goals are set to farrow 2.2 litters per year, farrow 23 pigs per gilt per year, farrow 26.4 pigs per sow per year, wean 19.8 pigs per gilt per year, wean 24.2 pigs per sow per year, farrow pigs averaging 1.59 kg , wean pigs averaging 7.27 kg at 3.5 wk of age, and market 105-kg hogs at 165 d of age. Nationwide, these goals have not been met despite all the management and technical improvements of the past few years. The national average is only 7.5 pigs …

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The Effect Of Various Proteins And Amino Acids On Salenium Toxicity To Rats Fed Corn-Based Or Wheat-Based Diets, Ailene Annette Herr Mar 1985

The Effect Of Various Proteins And Amino Acids On Salenium Toxicity To Rats Fed Corn-Based Or Wheat-Based Diets, Ailene Annette Herr

Electronic Theses and Dissertations

Selenium occurs in the earth's crust in varying concentrations. It is crystallochemically related to sulfur, and sulfide ores frequently contain selenium. The commercial production of selenium is usually as a by-product of other mining operations, especially copper mining. It occurs in different oxidation states depending on the pH of the soils. At acidic pHs the predominate form is selenite. That present as selenite is bound to a high degree by iron colloids in soils and is thus not readily absorbed by plants. Once taken up by plants selenium becomes, to varying degrees, available to animals. Selenium can be either harmful …

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Control And Instrumentation For An Electric Farm Tractor, Dennis Helder Mar 1985

Control And Instrumentation For An Electric Farm Tractor, Dennis Helder

Electronic Theses and Dissertations

During the late 1970's the sharp rise in petroleum costs produced a flurry of activity to develop alternate energy sources. A primary goal was to produce efficient, cost-effective electric vehicles. Until recently no consideration had been given to producing electric farm vehicles. However, a shortage of diesel fuel for farmers in the early 1980's prompted a USDA-DOE grant to study the feasibility of electric farm tractors. Research in this area has shown that a significant amount of study the feasibility of electric this area has shown that a farm work can be performed by electric vehicles. Tasks which are particularly …

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Adrienne Rich:"Re-Membering" Women's History And Language, Polly Heins Mar 1985

Adrienne Rich:"Re-Membering" Women's History And Language, Polly Heins

Electronic Theses and Dissertations

Adrienne Rich is a woman and a poet. Her striving to define and to integrate these two aspects of her life have caused her during the more producing changes poetry to undergo a profound metamorphosis than 30 years that she has been writing, in both the style and content of her work. In style, Rich progresses from a traditional metered rhyme scheme through a series of experimental forms that reflect her changing perception of self and society. She finally arrives at a fluid free verse that mirrors her acceptance of her own power as woman and poet. In content, Rich's …

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Debonding Phenomenon Of The Sioux Quartzite, Najim A. Heidari Mar 1985

Debonding Phenomenon Of The Sioux Quartzite, Najim A. Heidari

Electronic Theses and Dissertations

Among many factors affecting the quality of an asphaltic pavement, the bonding between the materials is one of the most important. These materials are aggregate and asphalt cement or emulsions, and each has certain physio-chemical characteristics. For example, natural aggregates and quartzites reveal sharp differences in appearances and texture. But besides their physical differences, they also have electrolytes which have opposite electric charges. However, because. asphalt cement and emulsion are both products of petroleum, when mixed with solvents they will vary in both physical and chemical behaviors. When hydrophilic aggregates such as quartzite and sandstone, both of which have negative …

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Snout Ventilation And Cooling Effects On Swine, Leslie R. Heard Mar 1985

Snout Ventilation And Cooling Effects On Swine, Leslie R. Heard

Electronic Theses and Dissertations

The commercial value of the 3.14 million hogs and pigs marketed by South Dakota farmers in 1980 was 278 million dollars. This represents 10 to 12 percent of the total agricultural product sales from South Dakota farms, and ranks South Dakota among the top 10 hog production states. Researchers have documented increases in swine productivity through optimization of the thermal environment for farrowing facilities, which could result in increased profits for South Dakota farmers. Agricultural engineers must continue to develop and evaluate techniques for improving the animal environment to provide producers the means for enhancing productivity. Benefits of relieving the …

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Economic Feasibility Of Producing Fuel Alcohol From Fodder Beets In A Small-Scale Plant, Mohamed K. Habash Mar 1985

Economic Feasibility Of Producing Fuel Alcohol From Fodder Beets In A Small-Scale Plant, Mohamed K. Habash

Electronic Theses and Dissertations

Oil is the principal energy form in all the major developed countries. Most nations domestically produce only trivial quantities. For most of these countries, the energy requirements are met predominantly by oil imports. The Arab oil embargo of October 1973 caused a dramatic jump in the real price of oil. Oil markets were further shocked in 1979 by the Iranian political crisis. Since the beginning of this instability in the world petroleum market, an extremely high level of public concern for liquid fuel energy sources has been created. Farmers have been hit hard by the increases in fuel costs; these …

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Historical Cropping Practices In Eastern South Dakota And Their Effect On Sediment And Nutrient Transport, Paul Edward Gaspar Mar 1985

Historical Cropping Practices In Eastern South Dakota And Their Effect On Sediment And Nutrient Transport, Paul Edward Gaspar

Electronic Theses and Dissertations

Increased fertilizer and pesticide usage and their effects on our lakes and streams are two of the intense farming practices that the public is becoming increasingly concerned about. When the nutrient and mineral concentrations of our lakes and streams become extreme the water may become unsuitable for human consumption and undesirable for recreational use. It is possible that the nutrient loading of lakes and streams is due to an increase of fertilizer applications. Nitrogen and phosphorus are the main elements considered. Some of the increased nutrient concentration in our lakes and streams is agriculturally related. Which practices conducted by farmers …

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Modification Of Toffaleti's Procedure For Sediment Transport, Janice Froehlich Mar 1985

Modification Of Toffaleti's Procedure For Sediment Transport, Janice Froehlich

Electronic Theses and Dissertations

The study of sediment transported by rivers is required to provide the best approximation of expected amounts of degradation or deposition. quantities are required for engineering Transport analyses associated with safety and productivity. The design and placement of river training structures to prevent flooding and bank erosion, design and determination of life expectancy of· reservoirs and optimization of channel designs all require sedimentation movement evaluations. Estimations of life expectancy and dredging requirements for navigable rivers or channels require calculations of sediment transport. be used as an indication of soil Studies can conservation effectiveness tillage in areas under construction or under …

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A Comparison Of Continuous And Discontinuous Treadmill Tests For Maximum Oxygen Uptake In Prepubescent Females, Kathleen A. Ferrar Mar 1985

A Comparison Of Continuous And Discontinuous Treadmill Tests For Maximum Oxygen Uptake In Prepubescent Females, Kathleen A. Ferrar

Electronic Theses and Dissertations

Thirteen prepubertal females (M=8.88 years) were tested for the determination of maximum oxygen uptake using two protocols, one being continuous in nature and the other discontinuous. Each subject completed three separate testing sessions. The first session was a familiarization session where each child was familiarized with the equipment and experienced a simulated discontinuous test on the treadmill. A continuous treadmill test and a discontinuous treadmill test were completed by each subject, the order of which was randomly assigned. The speed of the continuous test was maintained at 4.1 mph and 0% grade throughout the test. Without a rest between workloads, …

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Dialect Geography In South Dakota : The Eureka Dialect, Christie Steiger Delfanian Mar 1985

Dialect Geography In South Dakota : The Eureka Dialect, Christie Steiger Delfanian

Electronic Theses and Dissertations

In the late nineteenth century, diverse social and economic conditions in Europe caused immigration to America. The European experiences of these pioneers continued to influence their reactions against the pressure to assimilate into a Midwestern culture. Of the German people who settled in the Dakotas, the German Russians, particularly those who homesteaded in the Eureka, South Dakota area, formed one of the most culturally cohesive communities. When two major railroad companies were recruiting settlers for the Eureka area, the Germans from Russia were looking for an escape from the increasing pressure to blend into Russian society. These Germans originally had …

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Common Work Space Of Two Robot Arms, Byung Oh Choi Feb 1985

Common Work Space Of Two Robot Arms, Byung Oh Choi

Electronic Theses and Dissertations

The choice of kinematic and dynamic parameters for a robot arm depends on the desired working space, desired load lifting capacity, and desired performance of the robot. The inverse process, which is the determination of a single robot's work space from given specifications, is also possible, and is very important both to the designers and to the users. Proceeding further, the analysis of the common work space of two robot arms expands our understanding of spatial limitations of the communicating, cooperative robots of the future. This thesis presents a new possible application of industrial robots in which two robots work …

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A Comparison Of Leadership Styles Between College And University Administrators Of Physical Education In The United States And Korea, Kwang Min Cho Feb 1985

A Comparison Of Leadership Styles Between College And University Administrators Of Physical Education In The United States And Korea, Kwang Min Cho

Electronic Theses and Dissertations

Any certain leadership style cannot be the best for all situations and circumstances. Marshall and Frost indicate that "a person might be an effective leader in one set of circumstances, at a given moment in history, with a specific group of people, yet fail miserably at another time with a different task to perform''. Schein also pointed out that the effective leader "must have the personal flexibility and range of skill necessary to vary his own behavior. If the needs and motives of his subordinates are different, they must be treated differently". Thus, leaders may not be effective unless they …

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Chemical, Sensory And Microbiological Properties Of Water-Added Ham Containing Pork And Turkey Blends, Chiao-Min Chen Feb 1985

Chemical, Sensory And Microbiological Properties Of Water-Added Ham Containing Pork And Turkey Blends, Chiao-Min Chen

Electronic Theses and Dissertations

In recent years there has been an increased consumption of convenience foods due to changing life styles and food distribution patterns. In response to these changes the meat industry has developed a great variety of processed products such as restructured steak, turkey ham, chicken loaves and turkey patties. In addition to previous changes, there are some economic factors which are responsible for shifts in consumption According to patterns from the Livestock red meats to poultry meats. and Poultry Outlook and Situation Report, real disposable personal income in 1984 has risen nearly 6 percent from the previous year. In 1985, disposable …

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Effects Of Breed Of Ewe And Management System On The Lifetime Production Of Lamb And Wool, Wayne Joseph Busch Feb 1985

Effects Of Breed Of Ewe And Management System On The Lifetime Production Of Lamb And Wool, Wayne Joseph Busch

Electronic Theses and Dissertations

Sheep production in the United States is highly variable. The sources of this variation are many and may include breed, climatic condition, management system and selection emphasis. The sheep is a highly adaptable animal and the success of an operation may be due in part to the ability of producers to select breeds of sheep best suited to their situation. Over time, two distinct management systems have developed. The first of these may be termed the farm flock system. The farm flock system is typical of the eastern United States in the crop farming areas of the country. This system …

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Ribonuclease Ii :A Glycoprotein With Differential Distribution In Tissues Of Two Nonacclimated Cultivars Of Winter Barley, Gregory James Bunkers Feb 1985

Ribonuclease Ii :A Glycoprotein With Differential Distribution In Tissues Of Two Nonacclimated Cultivars Of Winter Barley, Gregory James Bunkers

Electronic Theses and Dissertations

The purpose of this research was to develop a more efficient procedure that would enable purification of adequate RNase necessary to further characterize the physical, chemical, and catalytic properties-of the enzymes involved. Two cultivars of winter barley were selected because of previous observations showing differences in RNase amounts and types which was related to freeze survival potential. Plant RNases from many species and cultivars of plants have been studied. Reddi proposed a classification system for plant ribonucleases that was later extended by Wilson. All enzymes that cleave a polynucleotide can be identified as either a nuclease or a phosphodiesterase. Wilson …

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Tryptophan And Threonine Requirements Of Pigs Fed A Low-Protein, Corn-Sunflower Meal Diet, Barton S. Borg Feb 1985

Tryptophan And Threonine Requirements Of Pigs Fed A Low-Protein, Corn-Sunflower Meal Diet, Barton S. Borg

Electronic Theses and Dissertations

The ultimate goal of the pork industry is efficient production of quality pork for the least monetary investment. Most swine diets are formulated using feedstuffs which supply 100% natural protein. Different protein sources differ in their amino acid content and availability. For example, soybean meal has been shown to contain more lysine than sunflower meal and the lysine in soybean meal is more available to the pig than that of sunflower meal. Protein sources which supply the correct balance of available amino acids relative to the needs of the animal are considered as being protein sources of the highest monetary …

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Measurement Of Denitrification Rates In Agricultural Soils, Pamela A. Bonrud Feb 1985

Measurement Of Denitrification Rates In Agricultural Soils, Pamela A. Bonrud

Electronic Theses and Dissertations

Modern agriculture with its fertilizers, pesticides, and mechanized irrigation has not risen above the constraints imposed by the natural nutrient cycles which determine availability of food on this planet. Research is needed to ensure these biogeochemical cycles can maintain a long-term balance with man's needed production. Microorganisms play major roles in biogeochemical transformations and cycling of elements through various environment. These microbial actions are essential to the survival of plants and animals in a particular habitat and will determine the potential productivity of an ecosystem. Those elements most intensely cycled include carbon, hydrogen, oxygen, nitrogen, phosphorus, and sulfur, all of …

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A Quarterly Econometric Model Of The U. S. Livestock Sector, Mary Ann Bennett Feb 1985

A Quarterly Econometric Model Of The U. S. Livestock Sector, Mary Ann Bennett

Electronic Theses and Dissertations

Given the importance of the livestock sector to both the United States and South Dakota economies, it is vital to have the best and most accurate information available for planning by both livestock producers and government agencies. In the next few sections, some of the more important economic problems faced by the livestock industry will be discussed. The first is due to the biological nature of livestock production. The others have to do with the effect of government policy decisions and world market conditions on the domestic livestock industry. Due to the biological nature of the livestock industry there are …

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Construction Of Shuttle Lac Plasmid Pbw314 And Transformation Of Escherichia Coli And High Ethanol Yielding Saccharomyces Cerevisiae Strains With This Plasmid, Safiollah Bagherpour Feb 1985

Construction Of Shuttle Lac Plasmid Pbw314 And Transformation Of Escherichia Coli And High Ethanol Yielding Saccharomyces Cerevisiae Strains With This Plasmid, Safiollah Bagherpour

Electronic Theses and Dissertations

Cheese whey is a by-product of the dairy industry and contains approximately 5% lactose, 0. 9% nitrogenous compounds, and small amounts of vitamins and minerals. It has often been treated as waste. In addition to the loss of these nutrients, its disposal creates pollution problems. Lactose which is the chief nutrient in whey, could be more profitably utilized by being converted into ethanol. Unfortunately, naturally occurring strains of brewer’s yeast (Saccharomyces cerevisiae) are unable to metabolize lactose and hence cannot convert it to ethanol. The overall objectives of my study were: 1.) To construct a S. cerevisiae - Escherichia coli …

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Relationships Of Food Faddism To Critical Thinking, Nutrition Knowledge And Some Demographic Characteristics, Mary Angelyn Auch Feb 1985

Relationships Of Food Faddism To Critical Thinking, Nutrition Knowledge And Some Demographic Characteristics, Mary Angelyn Auch

Electronic Theses and Dissertations

A 1972 national survey conducted for the Food and Drug Administration (FDA) documented the pervasiveness of food faddism in the U.S. Among a randomly selected sample, fifty-two percent of the people had used vitamin or mineral supplements at some time during their lives. Ten percent of the sample, representing ten percent of the American population, believed that there are benefits to taking more vitamins than are normally needed. Three fourths of the sample believed that vitamins provide energy, and that feeling tired and run down indicates a probable need for more vitamins. One fifth believed that cancer and arthritis are …

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