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Inbreeding In Rainbow Trout (Salmo Gairdneri): Analysis Of Lethal Temperature Tolerence, Jospeh L. Mangiardi

Electronic Theses and Dissertations

Inbreeding in rainbow trout (Salmo gairdneri) was evaluated in relation to an altered environment (upper lethal temperature 29 C), at four levels of inbreeding. At each level of inbreeding mean time to death for inbred, female-outbred half-sib, male-outbred half-sib and outbred families were evaluated. In all cases inbreds were less resistant to lethal temperature than were respective outbred families. Analysis of variance 9Snedecor’s F) and multiple range analysis (Tukey’s “w” procedure) provided inference limitations. Inbred fish were 82% less resistant to lethal temperature as comared to the respective outbred family at 50% inbreeding and 19% less resistant at 25% inbreeding. …

Determination Of Rnase Phenotype In Winter Barley Populations, Thomas Keith Blake

Electronic Theses and Dissertations

Selection for high levels of freeze resistance in winter barley (Hordeum vulgare L.) has resulted in development of cultivars which: 1) contain low RNase I activity in young shoot tissue and 2) a single RNase activity band in expanding leaf tissue at R_f 0.08. By contrast, seedlings of less-hardy cultivars typically have; 1) two RNase polymorphs (Rf=0.54 and 0.58) in young shoot tissue and 2) fours polymorphs (Rf-054, 0.58, 0.64 and 0.81) in expanding leaf samples. All enzymes migrate toward the anode (ph 7.9) and only the fastest moving band is common to expanded leaves in both groups of …

The Modification And Use Of An Electron Paramagnetic Resonance Spectrometer For Data Collection At Liquid Nitrogen Temperature, Vernon Lee Baumberger

Electronic Theses and Dissertations

The scope of this study includes the modification of an EPR spectrometer for acquisition of low temperature data. The modification involved adaptation of the system for use with a cylindrical cavity specifically designed for low temperature operation. This modification increased the capability of the present system for data collection at liquid nitrogen temperature and gave such greater stability than the rectangular cavity previously used. A comparison was made of signal to noise for the two cavities. This study showed a somewhat greater signal to noise ratio for the low temperature cylindrical cavity. Operation at low temperature also allowed the observation …

A Doppler Radar Controlled Traffic Indicator, Dennis L. Carr

Electronic Theses and Dissertations

Traffic hazards on our highways are decreasing with the onset of new safety regulations, lower speed limits and highway design procedures. Unfortunately, economics prevent their complete elimination. New roadways are made safer while old roadways are pretty much ignored. Obstructions such as trees which restrict a motorist's view can be removed but it could be a monumental task to relocate other obstructions such as buildings, or to get the public to agree to the expense of leveling hills which lie too close to crossroads or private drives. Should there be an obstruction such as a hills close to a driveway, …

Comparative Studies Of Two Flax (Linum Usitatissimum) Cultivars For Stomatal Characteristics, Adaxial Stomatal Resistance, And Osmotic Potential, Patricia Ann Franks

Electronic Theses and Dissertations

Limitations on seed yield of flax (Linum usitatissimum L.) are a major concern of re searchers trying to develop higher yielding oilseed cultivars (37, 71). Dybing (37) stated that comparative studies of physiological and biochemical factors could provide necessary insight into the cause of these limitations. Based on repeated observations and yield trials of lines from the world collection, CI 2522 ('Linott') and CI 1194 (Grant) were selected as an "appropriate" pair for such studies (37). The basic criteria of selection of these two cultivars were a consistent difference in seed yield cross environments tested and similarities in such …

Design And Performance Of A Solar Energy Intensifier System For Drying Shelled Corn, Kenneth J. Hellevang

Electronic Theses and Dissertations

Since utilizing solar energy as an alternate energy source for agricultural applications is dependent on improvement in the design of solar systems and on documentation of the performance characteristics, reliability and economic feasibility of solar systems, research was conducted with the following objectives: 1. Design a multi-purpose solar energy system with a diurnally tracking solar energy intensifier and a thermal energy storage unit to warm the ventilation air for a swine confinement building and to dry corn. 2. Test the solar energy intensifier-collector system for corn drying under actual conditions. 3. Evaluate the performance and economic feasibility of a diurnally …

Design Of A Vertical Axis And Turbine-Variable Speed Heat Pump Alternate Energy System, John V. Karnitis

Electronic Theses and Dissertations

The primary objective if the project is to design an unguyed wind energy conversion system consisting of a Savonius rotor assisted non-articulating 5m (15 ft) diameter Darrius vertical axis wind turbine, which is self-starting, and is mechanically coupled by a V-belt drive to an automotive air conditioning variable speed compressor. The variable speed-compressor is utilized as a mover for a variable speed heat pump system. The basic objective is further subdivided into the following objectives:
1. To develop a preliminary design of the wind energy conversion system, which later cane be modified to the existing energy needs.
2. To predict …

Microprocessor Used In Dc Motor Control, Kuie-Lin Lo

Electronic Theses and Dissertations

In this paper, the author uses a microprocessor to start and control the speed of a d-c motor. The circuits and software program which have been designed will be discussed.

An Econometric Analysis Of The Cash Receipts From Crops In South Dakota, Dennis James Senger

Electronic Theses and Dissertations

It is the intent of this research effort to fill a void left in the previous research efforts. This study will not be concerned with how farmers adjust production in response to price or government policies. The attempt will be made to adept single equation regression models to the examination of how the level of prices and supplies affect a major portion of the income farming sector receives, specifically the cash crop receipts. The specific objectives of this study are as follows: 1. To construct an economet5ric model of South Dakota crop receipts. 2. To demonstrate the model’s use as …

Effects Of Prescribed Burning At Different Fuel Moisture Levels On Vegetation And Soils Of Grasslands In Wind Cave National Park, Lynda Lou Worcester

Electronic Theses and Dissertations

Prescribed burning has had a short history of use as a management tool for grassland ecosystems. A paucity of information is available concerning the effects of burning grassland vegetation at different fuel moisture levels. There is ample documentation of the varied effects of burning on the grassland vegetation of humid regions this affected by season of occurrence, successional stage of the ecosystem, kind and density of vegetation, and phenological stage of the dominant vegetation. There is also abundant information on the effect of fire on forest ecosystems and on some grasslands ·invaded by woody plants, especially in the southwestern United …

N-Acetyl-Dl-Tryptophan And Dl-Tryptophan Supplementation To Low Protein Starter Diets For Swine, Michael Walrod Cox

Electronic Theses and Dissertations

Supplementation of individual amino acids to low protein swine diets is of current interest in the swine industry due to attempts to reduce feed costs. Although cereal grains provide the majority of the total protein requirements for swine, the remainder must be supplied either from natural protein supplements or synthetic amino acids. Research has shown amino acid content and balance are of greater importance than total protein alone in meeting nutrient needs. Because of this, a great deal of effort has been directed toward determining single amino acid requirements of swine. Research of this nature is complicated by the varying …

Drying Of Large Cylindrical Bales With A Solar Energy Intensifier-Thermal Energy Storage System, Jose L. Calle

Electronic Theses and Dissertations

Recent energy conditions have caused a reexamination of the use of solar energy for the drying of agricultural crops. As a result, because of the great importance in developing alternate energy sources as substitutes for conventional energy sources, research was conducted with the following objectives:

1. Test a multi-use solar energy intensifier-thermal energy storage system using various drying systems for a low temperature hay drying application.

2. Evaluate the thermal efficiency in terms of useful energy collected for a solar energy intensifier used to provide supplemental heat to dry hay, under actual climatic conditions.

Attitudes Of Teachers And Principals Toward Nutrition Education In South Dakota Elementary Schools, Mary Beth Baker Davis

Electronic Theses and Dissertations

A survey of 361 elementary teachers and 285 principals in the state of South Dakota measured attitudes toward nutrition education in the elementary school. Attitudes of elementary teachers toward teaching nutrition were also assessed. Relationships between attitudes, nutrition knowledge and other characteristics were determined. Results are based on the returned responses of 272 teachers and 262 principals. Significant positive correlations were observed between elementary teachers' attitudes toward nutrition education, nutrition knowledge, and their attitudes toward teaching nutrition. Attitude scores of teachers and principals were found to vary significantly with the inclusion of nutrition in school curriculum and favorable perceptions of …

Performance And Evaluation Of Swine House Heating With A Solar Energy Intensifier-Thermal Energy Storage System, Albert J. Heber

Electronic Theses and Dissertations

The urgency for energy independence in the United States is unprecedented in its history. The demand for energy is reflected in rising fuel costs which affects every segment of the economy. Among the most severely affected sectors is the agriculture industry, whose fossil fuel consumption is crucial to its efficient production of food and fiber. Solar, one of several alternative energy sources being developed nationwide has unique possibilities in the U.S. agriculture system. Large areas are available for locating collector units, and the energy requirements in the farm are low compared with the available radiation falling on the area. Drying …

The Effects Of Varying Dietary Protein, Calcium And Phosphorus In Starter Diets For Early Weaned Pigs, Wayne Eldon Schiefelbein

Electronic Theses and Dissertations

Genetic selection by swine producers the past 10 to 15 years has resulted in faster growing, heavier muscled pig. In addition, confinement rearing has placed an increased emphasis upon skeletal development and bone formation. Recent research conducted at Ohio State University indicated that growing swine responded to increasing dietary protein levels if both calcium and phosphorus are also correspondingly increased but maintained at approximately a 1.3:1 ratio. This and other research has led some investigators to believe that the National Research Council's requirements for protein, calcium and phosphorus may not be adequate to support maximum growth and development. Much attention …

The Dramatic Theory Of Maxwell Anderson And Its Relationship To Review & Scholarly Criticism Of The Tudor Trilogy, Andrew B. Trump

Electronic Theses and Dissertations

This study proposed to establish a basic overview of Maxwell Andersons’s dramatic theory, then to analyze review and scholarly criticism of the Anderson plays according to guidelines set up in the study. Finally, it proposed to draw conclusions concerning the critics’ emphases relating to Anderson’s theory and the contribution this playwright-critic “clash” exhibited for the study of theatre and dramatic criticism. Maxwell Anderson's dramatic theory as stated in his essays was utilized as a framework agreement, comparison and contrast with a body of reviews and scholarly articles about Anderson's three plays. This review and scholarly criticism was analyzed in respective …

Effect Of Sodium Sulfate, Calcium Level And Source And Phosphorus On The Potentiation Of Chlortetracycline And Performance Of Growing Pigs, John P. Balios

Electronic Theses and Dissertations

Experiments designed to study the potentiation of antibiotic in swine were conducted over a two-year period. During the two years, 344 crossbred pigs were used in three separate experiments to study the effects of calcium sources and levels, sulfate sources and levels, and phosphorus levels in diets containing different levels of chlortetracycline. The first experiment was divided into three two-periods. During the first two weeks 50 g/ton of chlortetracycline in the diets increased gain of pigs from 0.68 to 0.72 kg. per day. Pigs fed diets containing chlortetracycline gained significantly faster when the source of calcium was sulfate rather than …

Expectation Of Genetic Alteration Of Muscle Composition And Growth Traits In Rainbow Trout (Salmo Gairdneri), George W. Partelow

Electronic Theses and Dissertations

The breeding of farm animals to produce superior organisms has been extensively applied to many parts of the world. Much of the research has been concerned with the manip0ulation of muscle protein and fat in muscle tissue for the purpose of catering to human needs (Kielanowski 1972; Dinkel and Busch 1973; Olson et. al. 1976). Though fishes are able to convert food to quality protein more efficiently than most animals, they have been underutilized as a protein source in the United States. Until recently, genetic manipulation through selection to enhance their quality has not been extensively applied (Smith and Rumsey …

Population And Productivity Of A Flock Of Giant Canada Geese In Northeastern South Dakota, Ted A. Clausing

Electronic Theses and Dissertations

Population and productivity studies of giant Canada geese (Branta canadensis maxima) were conducted in northeastern South Dakota in 1976 and 1977. One hundred ninety-three of 436 randomly selected sample quarter sections on the 5,459 km2 area contained potential goose nesting habitat in 1976. Forty-six pairs, 6 indicated pairs, and 6 single geese were found on these 193 quarter sections during the 1977 nesting season. The population was estimated to be 1,880 geese. Recommendations were to continue aerial surveys in the spring and late summer and to supplement them with annual searches of the sample quarter sections used in this study. …

The Coteau Des Prairies: An Area Study, Orville E. Gab

Electronic Theses and Dissertations

This thesis is a systematic geographical analysis of the Coteau des Prairies of eastern South Dakota. The Coteau is a flatironed-shaped plateau about 200 miles in length pointing in a northerly direction (Fig.1). The northern tip of the flatiron-shaped Coteau ends at Sargents Point, North Dakota, about 15 miles north of Marshall County, South Dakota. The heel of the flatiron or the southern edge of the Coteau des Prairies would just about follow the border between Minnehaha and Lincoln Counties of South Dakota. The eastern edge of the Coteau's extent in South Dakota parallels the Minnesota border. In Deuel County, …

Demographic And Social Consequences Of A Shift From A Growth To A Stationary Population Model For South Dakota Counties : 1960-1970, Sharon Kunkel

Electronic Theses and Dissertations

The investigation of this problem is important since little empirical research has been done in the area of zero population growth as a result of controlled fertility and its consequences. Historically, the only other country to reach such a stage in development was France in the 1930's, and this stage was relatively short-lived. Consequently, one cannot turn to historical precedents for insights into the consequences of a no-growth population. In fact, most of the literature written on the subject is mainly conjecture. This problem is also timely since it is projected that zero population growth will soon be a reality …

Enhancement Of Flameless Atomic Absorption Determination Of Tellurium In Botanical Materials By Means Of Solvent Extraction, Jeffrey D. Jung

Electronic Theses and Dissertations

The use of sodium diethyldithiocarbamate and ammonium iodide as complexing agents for the extraction of tellurium from botanical materials is investigated. Flameless atomic absorption spectrophotometry is used as the method of analysis. The acids used to wet ash the samples are examined for their contribution to interferences in the extraction and analysis processes. The extract ion parameters needed for complete extraction of the tellurium are described. The instrument parameters required for the most precise and accurate analysis of tellurium are described. The two extract ion processes are compared to determine which method is more suitable for the extract ion of …

The Profitability Of Alternative Marketing Strategies, Freddie Joe Baatz

Electronic Theses and Dissertations

The general objective of this study is to evaluate alternative marketing strategies to determine the net return of each under varying conditions. Specific objectives were: 1. Identify marketing strategies which might be used by South Dakota corn and soybean growers to cope with changing market conditions.

2. Determine marketing strategies which maximized net return for corn and soybean growers’ for the crop years from 1972 through 1977.

3. Analyze the use of basis as a marketing strategy.

4. Estimate the cost of new on-farm storage facilities.

Response Of Strain To Amino Acid Supplementation And Lysine Requirements In Low Protein Layer Diets, John B. Carey

Electronic Theses and Dissertations

Two primary means of meeting amino acid requirements of laying hens, and nonruminants in general, are the use of diets high enough in protein to supply the needed amounts of all amino acids along with some excesses or by feeding low protein diets supplemented with minimum levels of essential amino acids needed for maximum performance. Proper supplementation of these low protein diets requires knowledge of the laying hen's requirement for amino acids and the interrelationships among amino acids, along with information about the influence of factors such as strain and management on these requirements . One purpose of the studies …

Embryonic Screening And Isolation Of Pine Needle Abortive Factors, Keith A. Dehaan

Electronic Theses and Dissertations

Cattleman and veterinarian in the western states and Canada have noted the frequent occurrence of reproductive failure in cattle grazing ranges with tree stands of ponderosa pine (Pinus ponderosa). Consumption of the needles or buds from this tree have caused pregnant stock cows to abort or deliver weak calves. Retained fatal membranes are also frequently associated with pine needle abortion. Surveys conducted by the Black Hills Area Resource and Development Project in 1974 covering eight countries in western South Dakota and eastern Wyoming estimate that at least 600 calves were lost through pine needle abortion in a three year period …

The Effects Of Participation In Competitive Basketball On Weight-Loss And Selected Measures Of Basketball Related Skills, Gary Esboldt

Electronic Theses and Dissertations

Significant weight reduction and decrement in shooting performance resulted from participation in competitive basketball. College males (n=21) with a mean age of 19.4 yrs were assigned to 4 basketball-teams according to their level of involvement, intramural participants (untrained=10) and intercollegiate players (trained=ll). Eighteen Ss completed. the study. Each team consisted of 5 players per session. Anthropometric data of ht, wt, and % body fat were collected.

Treatment consisted of a 36 minute workbout comprised of 3 competitive basketball games of 12 minutes each on 2 separate days. Replicated pre- and post-treatment measurements of basketball related skills involved modified vertical jump, …

Rhodium Complex Catalyzed Alcohol Carbonylation Reactions, Joseph Leo Nothnagel

Electronic Theses and Dissertations

The oxidative addition reaction of methyl iodide to rhodium or iridium complexes were investigated, incorporating various orthro-substituted dimethylphenylphosphine ligands on the metal complexes. Evidence of rate enhancement for the oxidative addition reaction of the various complexes with methyl iodide was found, due to the influence of the ortho-substitutes. The complexes studieded were:
Carbonyl (chloro) bis-[o-chlorophenyl (dimethyl) phosphine] -rhodium (I)
Carbonyl (chloro) bis-[o-bromophenyl (dimethyl) phosphine] -rhodium (I)
Carbonyl (chloro) bis-[dimethyphenlphosphine] -rhodium (I)
Carbonyl (chloro) bis-[o-chlorophenyl (dimethyl) phosphine] -rhodium (I)
The increase in relative reaction rates for the complexes were found to proceed in the order: Br > Cl > H for ortho-phenyl substituent …

An Investigation Of Engineering Decision-Making In A California Clean Water Grant Project, Lauren Elliot Silver

Electronic Theses and Dissertations

The planning and design of an engineering project can be viewed as a series of decisions. It follows , therefore , that a project is well engineered when good decisions are made in an efficient manner. This investigation seeks to examine engineering decision making for the general purpose of providing insights which may improve the engineering decision-making process. The study centers around a project constructed under the Clean Water Grant Program in California. There are two reasons for this 1) the Clean Water Grant Program is presently (1979) the largest public works program in the United States and is therefore, …

The Role Of Allelopathy On The Vegetational Composition Of Disturbed Sites On The Samuel H. Ordway Memorial Prairie, Randy C. Bartels

Electronic Theses and Dissertations

The presence of large numbers of cattle in prairie sites can lead to the trampling and destruction of native vegetation in some areas. These damaged, or disturbed sites are typically invaded by a variety of undesirable alien plant species. Many of the alien plant species possess allopathic mechanisms. These allopathic mechanisms enable the alien species to dominate the disturbed sites, and prevent the re-establishment of native plant species. Attempts are currently underway to preserve remaining tracts of native prairie in South Dakota. The Samuel H. Ordway, Jr. Memorial Prairie in McPherson county is one such tract, and is the research …

Nitrogent Removals By High-Rate Infiltration Of Wastewater, Richard J. Waples

Electronic Theses and Dissertations

This investigation evaluated the nitrogen considerations of the Brookings pilot unit with emphasis on new information provided by the 1978 operations. The specific objectives were as follows:
1. To evaluate the nitrogen removal efficiencies of the high-rate system, and
2. To investigate selected factors related to the nitrogen removals obtained by the basins.