Digital Commons Network^™

Movements And Habitats Of Brood-Rearing Wood Ducks On A Prairie River, Randy L. Smith

Electronic Theses and Dissertations

Radio telemetry and brood surveys were used to evaluate wood duck (Aix sponsa) brood habitat and movements along 40 km of the Big Sioux River in eastern South Dakota during 1979-81. Most of the oxbows and nearby wetlands in the study area contained water in 1979-80, but drought dried all but 2 of the 33 oxbows in 1981. Fourteen brood hens were radio monitored. In 1980, 4 hens utilized oxbows, 1 hen utilized the river, and 2 hens used other habitats for brood rearing. In 1981, 4 hens utilized oxbows, 2 hens utilized the river, and 1 hen utilized the …

Assessment Of The Impact Of The European Corn Borer At Three Locations In South Dakota, David R. Raemisch

Electronic Theses and Dissertations

The European corn borer (Lepidoptera: Pyralidae) varies as an

economically significant pest in South Dakota from south to north. In

the northern part of the state the European corn borer (ECB) is limited

to one generation per year. In contrast, there are localized sites

along the Missouri River in southern South Dakota which usually

experience a substantial second brood population. Infestation by

either first or second brood ECB occurs at different stages in the

developmental sequence of the corn plant. As such, each brood must be

considered separately when assessing relationships between yield loss

and ECB larval cavities within the …

Blood Ethoprop Retention And Interaction, Ebenezer Bonsu Asafu-Adjaye

Electronic Theses and Dissertations

0-ethyl-S, S-dipropyl phosphorodithioate, technically known as Ethoprop, is a newly introduced insecticide-nematicide manufactured by Mobil Corporation. It is applied directly to the soil where it is believed to exercise a broad spectrum, non-fumigant effect. It has good soil movement and residual properties, and has been used to control rootworms, cutworms, ·nematodes, wireworms, flea beetles and symphylans in corn, tobacco, potatoes, peanuts, bananas, and other crops. The uses of ethoprop are primarily agricultural, thus most of the work done on it to elucidate its properties has been in that area. The little research that has been performed on the biological properties …

Use Of Ion-Pairing For High Performance Liquid Chromatography Of Alkaloids And Quaternary Ammonium Compounds, Hsiao-Kuang Chiu

Electronic Theses and Dissertations

The alkaloids have been used by mankind in potions, medicines, teas and poisons for at least 3000 years. They occur throughout the plant and animal kingdoms and display a diversity of structure unmatched by any other group of natural compounds. Because the alkaloids exhibit an extraordinary array of pharmacological activities they are widely used in medicine. The following 1ist is designed to indicate the degree of use of various alkaloids by U.S. physicians: Major: Atropine, Ergonovine, Morphine, Codeine Medium: Scopolamine, Ergotamine, Quinine, Cocaine Minor: Strychnine, Brucine general approach to the ion-pairing high performance liquid chromatography (HPLC) of alkaloids and quaternary …

Growth Hormone Variability And Its Predictive Value In Beef Females, Thomas W. Lingscheit

Electronic Theses and Dissertations

Endocrine influence on metabolism determines the rate and extent of growth of an animal. A thorough understanding of hormones and their influence is necessary to the meat animal industry for advancement of efficient production to supply a growing world demand for food. Many hormones affect metabolism, but growth hormone (GH) appears to have one of the smallest fluctuations in circulating levels. Previous research indicates nonsignificant changes in plasma growth hormone (GH) due to season, circadian rhythm or level of nutrient intake. Factors that have been identified a s influencing GH level are sex, age, roughage content of the diet, breed, …

The Response Of The Face Fly (Musca Automnalis) To Seasonal Changes In Manure Quality, Timothy James Lysyk

Electronic Theses and Dissertations

The face fly is a major pest of cattle in East Central South Dakota. The female fly feeds on the faces of cattle and lays eggs in freshly deposited manure. Preference is shown for the manure of animals fed grass. The egg and larval stages are spent in the manure, and the mature larvae migrate to the surrounding substrate to pupate. While in the pats, the face fly stages present have been shown to be sensitive to a number of physical, chemical and biotic factors. The manure pat acts as both a source of food and as a habitat for …

A Short-Run Economic Analysis Of Some Factors Influencing The Supply Of Beef-Cattle At Auctions In South-Eastern Botswana, 1976-1980, Kene Patrick Cyril Sinombe

Electronic Theses and Dissertations

Auction sales provide a major cattle marketing outlet for farmers in Botswana. There were 5,740 cattle auctioned in the South-eastern part of Botswana in 1976. This number represented 16% of the total export off-take from the area. The main market outlet for slaughter beef is through direct marketing of cattle to the Botswana Meat Commission (BMC) abattoir. The BMC, an export monopoly beef marketing board, sets prices and cattle buyers country-wide adjust them to derive producer prices, because they finally sell cattle to the BMC. The BMC price plays a major role in deriving producer prices at auction sales yards. …

Genetic Correlations Among Sex-Limited Traits, Michael D. Macneil

Electronic Theses and Dissertations

Monte Carlo simulation techniques were used to assess the merits of three methods for calculation of the genetic correlation when traits have been measured on half-sibs of each sex. The restricted maximum likelihood, path coefficient and covariance component estimators did not differ significantly in their accuracy. Path coefficient and covariance component methodologies gave nearly unbiased estimators for traits of high heritability. Across both levels of heritability, the restricted maximum likelihood methodology resulted in genetic correlations being estimated with significantly smaller sampling variance than the other methods. Genetic correlations were estimated for age of puberty, weight at puberty, conceptions per service, …

Extravagant Gestures : The World As Spectacle In The Works Of Annie Dillard / By Patricia Anne Taylor, Patricia Anne Taylor

Electronic Theses and Dissertations

No abstract provided.

Henry Chinaski Goes To Hell : A Journey Through The Wasteland Of Modern American Society, Jimmie Earl Cain

Electronic Theses and Dissertations

No abstract provided.

Composition, Biomass, And Protein Content Of A Lemna Trisulca L., Invertebrate Community In A Prairie Wetland, Linda J. Meyers

Electronic Theses and Dissertations

Samples of star duckweed (Lemna trisulca L.) were collected from a South Dakota prairie wetland during the summer 1981. Amphipods and gastropods were the dominant macroinvertebrates found within samples of duckweed in terms of biomass and density. Cladocera were the dominant microinvertebrates found in association with star duckweed. Significant variability was found in the biomass and densities of specific invertebrates with respect to sampling dates. Crude protein values of star duckweed-invertebrate community samples ranged from 7.6 to 18.5% and were found to correlate significantly with protein levels of the duckweed. Crude protein values for star duckweed ranged from 7.1 to …

Uses Of Figures Of Speech In Selected Speeches Of Jerry Falwell, Mary M. Gill

Electronic Theses and Dissertations

As early as 350 B.C. Aristotle was cultivating concepts of language usage. It addition to the principles of clarity, accuracy, appropriateness and vividness, he developed concepts on the uses of the metaphor as a stylistic tool. The study of style and its adaptation continued to the Roman Age and the early study of rhetoric in England. During the eighteenth-century various rhetoricians began analyzing style more closely. Francis Bacon noted "the ill and unfit choice of words wonderfully obstructs the understanding. "He analyzed words and word combinations and their effect on interpretation. Adam Smith instructed that style was the common element …

Trace Determination Of Tellurium In Biological Samples By Flameless Atomic Absorption Following Extraction Of The Sym-Diphenylthiourea-Tellurium Complex, Deborah A. Pravecek

Electronic Theses and Dissertations

A flameless atomic absorption method of determining trace amounts of tellurium in acidic -media with sym-diphenylthiourea has been studied. Tellurium is extracted almost quantitatively from 4-8 M hydrochloric acid with a chloroform solution of sym-diphenylthiourea. The effects of interfering ions on the extraction efficiency have been studied. Conditions for the maximum extraction have been described. Optimal instrument parameters for the analysis of extracts have been determined. In most biological samples tellurium is found only in trace quantities. The necessity to determine traces of tellurium has raised difficult problems for analysts. The purpose of this investigation was to develop a technique …

Theories Of Image-Making In Hogarth, Reynolds And Blake, Anne C. Johnson

Electronic Theses and Dissertations

This is a study of artistic imagination--literally, the process of image-making--the act of translating sensory information into visible symbols. Specifically, it is a study of three eighteenth century artists' detailed theories of imagination, and a comparison of the visual effects described by these theories. William Hogarth, Sir Joshua Reynolds, and William Blake ar~ three roughly contemporary artists who each describe a means of approaching nature, recording sensory facts and translating them into the images of art. I intend to pose three related questions to these artists and to seek answers in their respective treatises on aesthetic composition. Two of these …

Gastrointestinal Helminth Parasitisms Of Dairy Cattle In South Dakota, John Bennett Shultz

Electronic Theses and Dissertations

During 1981-82, four studies on gastrointestinal helminth parasitisms of South Dakota dairy cattle were conducted. They were as follows:
1 . Survey of parasitisms in South Dakota dairy show cattle during 1981.
2. Study of seasonal trends in parasitisms in two Brookings County, South Dakota, dairy herds during 1981-82.
3. Study of parasitisms in selected Black Hills dairy herds during 1981-82.
4. Survey of parasitisms in Dairy Herd Improvement Association (DHIA) cows in eastern South Dakota during 1982.

Dye Marking Of Antibiotics Used In Treatment Of Mastitis In Dry And Lactating Cows, Richard A. Ellefson

Electronic Theses and Dissertations

Mastitis is the one major disease affecting dairy cows; considerable direct and indirect economic losses can be attributed to mastitis (6). Treatment of mastitis with antibiotic preparations will alleviate most disease symptoms. Problems may arise when cows treated with antibiotics have their milk used for commercial milk processes before antibiotics are clear. They are: 1) some people are allergic to penicillin, and 2) cultured dairy products may not grow because of inhibition. The Food, Drug, and Cosmetic Act established that milk and milk products containing antibiotics are considered adulterated. Due to recent innovations in antibiotics testing The National Conference on …

Kinetic Study Of Hydrolysis Of N-Methyl Glucamine Salt Of [Delta8] - Tetrahydrocannabinol Hemisuccinate In Semi-Aqueous Solvent/ By Boladale Olanrewaju Silva, Boladale Olanrewaju Silva

Electronic Theses and Dissertations

No abstract provided.

Whey-Caseinate Blends And Lactose Hydrolysis In Yogurt Manufacture, Catherine A. Whalen

Electronic Theses and Dissertations

Yogurt is a highly nutritious cultured dairy product which has been consumed for centuries, particularly in Eastern Europe. Although per capita consumption in the United. States is still far below that of most European countries; yogurt sales in the U.S.A. have increased phenomenally during the past three decades. Yogurt sales in the U.S.A. totaled 7.7 million kg in 1955; 31.8 million kg in 1966; and approximately 227 million kg by 1976 (41). Per capita sales increased 211% from 1970 to 1980 (45). Yogurt is generally manufactured from milk or lowfat milk which has been fortified with extra milk solids. Nonfat …

Feeding Value Of High Starch And High Fat Rations For Dairy Calves, G. Duff Stewart

Electronic Theses and Dissertations

Sixty-four Holstein calves were used in a 3 x 2 factorial experiment of 12 wk to evaluate growth performance when fed control, high starch, and high fat pelleted diets separately or with a supplemental concentrate mix offered the first 6 wk. High starch and high fat diets were formulated to .contain more digestible energy than the control diet. Calves received milk the first 5 wk, plus one of the above rations ad libitum wk 1 thru 12. The control diet contained corn, oats, and soybean meal; the high starch diet contained corn and soybean meal; while the high fat diet …

Use Of Dry Whey And Lactose Hydrolysis In Yogurt Bases, Nagendra P. Shah

Electronic Theses and Dissertations

Yogurt is one of the oldest and most traditional fermented dairy products. Since early times it has been an important food item of the people in the Middle East. Except for its refreshing taste and wholesomeness as a food, no special virtues were claimed for it until early in the 20th century when the bacteriologist, Elie Metchnikoff, who shared a Nobel Prize in 1908, concluded from his studies on the effect of lactic acid bacteria of the digestive tract, that yogurt arrests putrefaction in the intestinal tract and thus might be beneficial to health (55). Attempts to popularize yogurt in …

The Effect Of Dosage Form And Route Of Administration On - Pdc Acetate Pharmacokinetics In Rats / By Peggy Hester Rider, Peggy Hester Rider

Electronic Theses and Dissertations

No abstract provided.

Chaucer's Colorful Companions : Animal Images In Troilus And Criseyde, Lofton Sturgis Monteith

Electronic Theses and Dissertations

No abstract provided.

A Quantitative Comparison Of Two Operant Response Topographies In Laboratory Rats, Betsy Jane Morgan

Electronic Theses and Dissertations

No abstract provided.

An Igm Specific Hemagglutination Test For Toxoplasma Gondii / By R. Kelley Thueson, Rosse Kelley Thueson

Electronic Theses and Dissertations

No abstract provided.

Lithologic And Seismic Determination And Correlation Of Depositional Environments In Central Mississippi Sound, Henry Cole Carroll

Electronic Theses and Dissertations

No abstract provided.

Paul Gauguin's Eve Theme, Sri Kothandapani Nelson

Electronic Theses and Dissertations

No abstract provided.

The Insects Associated With Flowering Wild Carrot (Daucus Carotavar. Carota L.) In Northern Mississippi, Michael O. Mann

Electronic Theses and Dissertations

No abstract provided.

Boxes Constructions : Time In Space, L. Steven Cooper

Electronic Theses and Dissertations

No abstract provided.

The Effects Of Prenatal Ethanol Exposure On Morphometric Characteristics Of Neonatal Rats, Sally Darlene Hannah

Electronic Theses and Dissertations

No abstract provided.

Poe And The Perfectability Of Man, Richard A. Fusco

Electronic Theses and Dissertations

No abstract provided.