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Differentiation Of Pigment Granules And Tyrosinase Analyses In The Hair Follicle Pigment Cells Of Lethal Yellow And Nonagouti Mice, Robert A. Japs
Differentiation Of Pigment Granules And Tyrosinase Analyses In The Hair Follicle Pigment Cells Of Lethal Yellow And Nonagouti Mice, Robert A. Japs
Electronic Theses and Dissertations
The lethal yellow gene (Ay) located on chromosome two of the mouse (Mus musculus) represents the top dominant of the agouti series. It was first described by Cuenot in 1905 as being lethal in the homozygous (Ay/Ay) state. These (Ay/Ay) embryos encounter abnormalities at the morula or blastocyst stage and die early during the sixth day of gestation when the trophectoderm comes in contact with the uterine epithelium at implantation. Other abnormalities of the Ay gene besides the yellow coat color include its association with the stimulation of normal body growth, obesity, a diabetes like syndrome and sterility. In addition …
Influence Of Early Season Temperatures On The Relative Leaf Expansion Rate Of Corn, Jody L. Ohmacht
Influence Of Early Season Temperatures On The Relative Leaf Expansion Rate Of Corn, Jody L. Ohmacht
Electronic Theses and Dissertations
This study was initiated to determine the response of corn seedling growth to environmental conditions with emphasis placed on soil and air temperatures. Three environmental variables are considered most important to plant growth and these are temperature, light, and moisture. Temperature is considered the most important of these three variables. However, plant response to temperature, light, or moisture conditions will be influenced by other environmental factors. Another variable affecting plant growth which should be considered is initial plant size and/or plant stage of development for any given measuring period. A question that arises is do any of these variables have …
Food Habits Of Charadriiform Birds During Peak Migration Through Eastern South Dakota, James Brian Hauge
Food Habits Of Charadriiform Birds During Peak Migration Through Eastern South Dakota, James Brian Hauge
Electronic Theses and Dissertations
The shorebirds, Order Charadriiformes, are very important organisms as they make up a great proportion of the summer biomass in arctic regions. Spring migration routes of many species of shorebirds carry them through eastern South Dakota where· lakeshores and temporary ponds are crucial stopover points. At these stopover points, the birds feed on various organisms which will supply them with the energy needed for completion of migration and for breeding. This is a study of the migratory schedules and feeding ecology of shorebirds migrating through eastern South Dakota during the spring migrations of 1985 and 1986. It is a part …
A Comparative Study Of Traditional Nursing Schedules Vs. Extended Nursing Schedules On Patient Satisfaction, Cheryl J. Erler
A Comparative Study Of Traditional Nursing Schedules Vs. Extended Nursing Schedules On Patient Satisfaction, Cheryl J. Erler
Electronic Theses and Dissertations
This study compared patient satisfaction with nursing care given by nurses working traditional eight-hour shifts versus the satisfaction of patients being cared for by nurses working twelve-hour shifts.
The conceptual framework was derived from Systems Theory incorporating the interrelated subsystems within the organization that contribute to patient satisfaction as identified by Johnson, Kast, and Rosenzweig (1973).
The Patient Satisfaction Instrument designed by Risser(1975) and adapted by Hinshaw and Atwood (1979) for in-patient use was utilized for data collection. One medical-surgical unit in a Veterans Administration Hospital constituted the experimental group where patients were surveyed before and after the staffing change. …
Chickpeas As A Protein And Energy Supplement For High Producing Dairy Cows, Darryl Lynn Hadsell
Chickpeas As A Protein And Energy Supplement For High Producing Dairy Cows, Darryl Lynn Hadsell
Electronic Theses and Dissertations
Thirty lactating Holstein cows were randomly assigned to one of three diets to evaluate chickpeas as a dietary supplement from wk 4 to 16 postpartum. Diets contained chickpeas at 0, 50, and 100 % of the concentrate dry matter in place of corn and soybean meal. Total mixed diets, fed individually, contained concentrate corn silage and alfalfa hay at 52, 32, and 16 % of the dry matter. Milk yield (34.5, 35.1, 35.7 kg/d) was higher for cows fed 100 % chickpeas than 0 % chickpeas. Fat (3.06, 3.09, 3.28 %) was highest for cows fed 100 % chickpeas. Milk …
The Metal Promoted Hydration Of Di-2-Pyridyl Ketone And The Crystal And Molecular Structures Of Bis-2,2',N,N'-Bipyridyl Ketone-Hydrate Chromium(Iii) Chloride And Ruthenium(Iii) Chloride, Shaun Owen Sommerer
The Metal Promoted Hydration Of Di-2-Pyridyl Ketone And The Crystal And Molecular Structures Of Bis-2,2',N,N'-Bipyridyl Ketone-Hydrate Chromium(Iii) Chloride And Ruthenium(Iii) Chloride, Shaun Owen Sommerer
Electronic Theses and Dissertations
The metal promoted hydration of Di-2-Pyridyl Ketone (DPK), has been of interest for some time in that it falls into a rare class of ligands that undergo reaction upon coordination to a transition metal ion. Metal promoted hydration here means that the carbonyl linkage of the ketone has undergone hydration to the diol form because the DPK is coordinated to a metal. Fig. 1 illustrates the hydration process. This is of interest because it is well known that ketones do not normally undergo hydration unless they are flanked by very strong electron withdrawing groups such as chloride or fluoride. Special …
Evaluation Of Largemouth Bass And Bluegill Stocking Strategies In South Dakota Ponds, David M. Gilbraith
Evaluation Of Largemouth Bass And Bluegill Stocking Strategies In South Dakota Ponds, David M. Gilbraith
Electronic Theses and Dissertations
Three fish-stocking methods were evaluated to determine the effects of stocking density and chronology on largemouth bass (Micropterus salmoides) and bluegill (Lepomis macrochirus) survival, growth, and reproductive success during 1983-1985. Two densities of split-stocking largemouth bass with bluegills were compared to the simultaneous introduction of both species. First-year largemouth bass survival was low and variable among treatments. Survival of largemouth bass ranged from 0-85% and averaged 25% among treatments. Bluegill survival, for the first and second years combined, ranged from 0-60% and averaged 22% among two split-stocking treatments. Thirty-six percent of study ponds experienced at least partial winterkill during the …
Impact Of Ponderosa Pine Thinning And Slash Management On The Herbage Production Of Selected Soils In Custer State Park, Kelly John Bopray
Impact Of Ponderosa Pine Thinning And Slash Management On The Herbage Production Of Selected Soils In Custer State Park, Kelly John Bopray
Electronic Theses and Dissertations
Custer State Park's multiple-use management plan stresses compromise among resource users. The objective of integration of forest, wildlife and recreational resource management is to provide maximum benefits to all sectors of the management plan. Forest management techniques have a marked influence on the unique wildlife populations of Custer State Park. To provide input for individuals making integrated management decisions, an approach was taken to combine forest stand and soil survey information, to assess understory herbage production for deer and elk grazing. Thinning pine stands will increase forage and browse production. Slash left from thinning and timber harvesting operations is suspected …
Hf Wide-Band Omnidirectional Antenna System, Han-Tak Kwak
Hf Wide-Band Omnidirectional Antenna System, Han-Tak Kwak
Electronic Theses and Dissertations
In antenna theory and practice, an increased directivity of the antenna improves the total system performance. Narrow beamwidth allows discriminating (on reception) against interfering signals from directions other than that of the desired signals, and on transmission it minimizes interference with receiving stations other than the desired direction. Sharp directivity, however, is undesirable in some applications. For example, in entertainment broadcasting and in certain forms of communication an omnidirectional horizontal pattern is required. Furthermore, three-dimensional omnidirectionality may be desired in unstabilized spacecraft applications. Omnidirectionality in a horizontal plane is fairly simple to obtain. In this paper, two crossed small loops …
Studies Of The Prevention Of Silica Urolithiasis, Dong-Hao Lu
Studies Of The Prevention Of Silica Urolithiasis, Dong-Hao Lu
Electronic Theses and Dissertations
Urethral obstruction by silica calculi is a major cause of death of cattle and sheep grazing western ranges of the United States. Similar calculi problems have been found in several other countries including Canada, U.S.S.R. and Australia. Range grasses having silica contents of 4 to 7% (dry basis) appear to be the silica source. In addition, silica urinary calculi have been reported to occur in dogs from silicon of unknown origin, humans consuming large quantities of silicate antacids and rats and guinea pigs experimentally fed tetraethylorthosilicate (TES). Emerick and coworkers have found that supplemental dietary phosphate and acid-forming salts provide …
The Effects Of Nonmetropolitan Net Migration Rate On Selected Demographic And Employment Characteristics In The Agricultural Western Plains Division Of The West North Central Region, 1970-1980, Abidemi Olumide Oyinlade
The Effects Of Nonmetropolitan Net Migration Rate On Selected Demographic And Employment Characteristics In The Agricultural Western Plains Division Of The West North Central Region, 1970-1980, Abidemi Olumide Oyinlade
Electronic Theses and Dissertations
This study investigated relationships between nonmetropolitan net migration rates and selected demographic and employment characteristics in the Agricultural Western Plains Division of the West North Central Region, 1970-1980. This division comprises of the states of North Dakota, South Dakota, Nebraska and Kansas. A case study of South Dakota was also conducted to identify the association between nonmetropolitan age-specific net migration rates and changes in selected employment characteristics, 1970-1980. The specific demographic variable was the ratio of males to females in the nonmetropolitan counties, while the employment variables included civilian labor force status, civilian labor force employed, and employment in each …
Impacts Of Stocking Herbivorous Fishes For Aquatic Macophyte Removal Upon South Dakota Ponds, John Christopher Young
Impacts Of Stocking Herbivorous Fishes For Aquatic Macophyte Removal Upon South Dakota Ponds, John Christopher Young
Electronic Theses and Dissertations
Aquatic macrophyte removal by herbivorous fishes was investigated to determine changes in the predator-prey relationship of largemouth bass, Micropterus salmoides, and bluegills, Lepomis macrochirus, stocked into 15 prairie ponds. Monosex grass carp, Ctenopharyngodon idella, and hybrid grass carp, Ctenopharyngodon idella x Hypophthalmicthys nobilis, were each stocked at a rate of 247 fish/hectare into five study ponds. Largemouth bass and bluegills were each stocked into 12 study ponds at 247 fish/hectare in July, and 1235 fish/hectare in September, 1984, respectively. Additional largemouth bass were stocked at a rate of 247 fish/hectare into nine study ponds in July, 1985. Conductivity was the …
Validation Of The Defining Characteristics Of Disturbance In Self-Esteem In Patients With Anorexia Nervosa, June C. Peterson Larson
Validation Of The Defining Characteristics Of Disturbance In Self-Esteem In Patients With Anorexia Nervosa, June C. Peterson Larson
Electronic Theses and Dissertations
A low self-esteem is a critical, pervasive problem in the lives of clients with eating disorders. The purpose of this study was to validate the defining characteristics of the nursing diagnosis, Disturbance in Self-Esteem, in a specific population group. The purposive, nonprobability sample consisted of 26 females between the ages of 13 and 24 who had a medical diagnosis of Anorexia Nervosa. This study addressed the following question: Does the cluster of defining characteristics for Disturbance in Self-Esteem, as defined by NANDA, occur in clients diagnosed as having Anorexia Nervosa; clients in whom a disturbed self-esteem is manifest.
The Tennessee …
Habitat Selection And Sexual Suggestion Of Rocky Mountain Bighorn Sheep In Custer State Park, South Dakota, Larry J. Layne
Habitat Selection And Sexual Suggestion Of Rocky Mountain Bighorn Sheep In Custer State Park, South Dakota, Larry J. Layne
Electronic Theses and Dissertations
Spatial segregation between Rocky Mountain bighorn sheep (Ovis canadensis canadensis) ram and ewe herds has been documented by Geist (1971), Geist and Petocz (1977), Shank (1979), Morgantini and Hudson (1981), and Hogg (1983), where ram herds consist of mature males approximately 4 years old and older and ewe herds are comprised of all other individuals. Geist (1971), Shank (1979), and Hogg (1983) have shown that segregation occurs year-round except during the breeding season (November and December) when the sexes congregate on a traditional breeding range (cf. Geist 1971, p 209). These studies also have shown that the sexes remain separated …
Growth And Proteolytic Activity Of Selected Psychrotrophic Bacteria In Whole Milk And Whole Milk Retentate, Ravinder Reddy
Growth And Proteolytic Activity Of Selected Psychrotrophic Bacteria In Whole Milk And Whole Milk Retentate, Ravinder Reddy
Electronic Theses and Dissertations
In the last twenty years a number of membrane separation processes have evolved from laboratory scale, through pilot plant investigation, to full scale production units. One such process, ultrafiltration, has been found particularly useful in the dairy industry. Ultrafiltration uses porous polymeric membranes to separate molecules, principally on the basis of their molecular weight. In milk, fat, protein and associated substances are retained on the membrane. Permeate, which passes through the membrane contains mainly water, lactose and other low molecular weight substances. There is interest in ultrafiltration of milk because of it is potential importance in saving costs to both …
Phosphoramidates : Metal Ion Catalyzed Ligand Exchange, Paula R. Andenas
Phosphoramidates : Metal Ion Catalyzed Ligand Exchange, Paula R. Andenas
Electronic Theses and Dissertations
Our studies entail the use of a model system, the 2-substituted-5-chloromethyl-5-methyl-2-oxo-1,3,2-dioxaphosphorinan whose chemistry has been outlined in a number of publications. A phosphorian ring system is found in cyclic AMP and is the central structural feature of cyclophosphamides, which are anticancer drugs. The goal of our research project is to study the effect of metal ions in methanolysis of phosphorus (V) substrates. We have attempted to answer which metal ions are effective as catalysts and their relative efficiency. In the study of these problems, we are examining catalytic specificity of the displacement of specific ligands. The stereochemistry of the reaction, …
The Effects Of Increasing Hamstring Flexibility On Peak Quadriceps Torque In College-Age Females, Mark Loren Amundson
The Effects Of Increasing Hamstring Flexibility On Peak Quadriceps Torque In College-Age Females, Mark Loren Amundson
Electronic Theses and Dissertations
The purpose of this investigation was to determine if increasing hamstring flexibility elicited a significant increase in peak quadriceps torque in college-age females. Fifteen college-age females, mean age 18.93 ± 0.77 years, volunteered as subjects for the study. Each subject was pretested and posttested for hamstring flexibility and peak quadriceps torque (Orthotron II set at 60 degrees per second). All subjects completed an eight week treatment program consisting of 10 repetitions of proprioceptive neuromuscular facilitation stretching for the right hamstring muscles, done three times per week, with the left leg used as a control leg. Hamstring flexibility was measured utilizing …
Sump Pump Survey And Loading Analysis Of Sewers In The East Acres Subdivision Of The City Of Brookings, South Dakota, Ronald Gene Abraham
Sump Pump Survey And Loading Analysis Of Sewers In The East Acres Subdivision Of The City Of Brookings, South Dakota, Ronald Gene Abraham
Electronic Theses and Dissertations
The City of Brookings, South Dakota is a community with a population of over 15,000, including a campus enrollment at South Dakota State University of nearly 7,000. Brookings is located near the Big Sioux River which flows northwest to the southeast and runs only a couple of miles to the west of town. This community has many low areas which are influenced by the high ground water table of the Big Sioux aquifer. The portions of Brookings between 17th Avenue and 22nd Avenue, 6th Street and Derdall Drive is such an area. Many homes within this vicinity …
Factors Influencing Grey Seed Weevil Smicronyx Sordidus (Lec.) (Coleoptera: Curculionidae) Infestation And Survival, Matthew E. Byers
Factors Influencing Grey Seed Weevil Smicronyx Sordidus (Lec.) (Coleoptera: Curculionidae) Infestation And Survival, Matthew E. Byers
Electronic Theses and Dissertations
Cultivated sunflower (Helianthus annuus L.) is an economically important crop in the United States and South Dakota. Native to North America, oil seed varieties of cultivated sunflower are second only to soybeans as a source of vegetable oil. Sunflower seed harvested for both oil and confection in South Dakota was 59,711 hectares (ha) in 1975. This hectarage has increased, stabilized, and during the last six years, has averaged 218,600 ha per year. Sunflower production, however in Minnesota and North Dakota, has decreased during this same period. Sunflower breeding efforts and hybrid development have reached the point where cultivated sunflower has …
The Original Survey Notes Of Beadle County As A Geographical Reference, Ralph Jay Borkowski
The Original Survey Notes Of Beadle County As A Geographical Reference, Ralph Jay Borkowski
Electronic Theses and Dissertations
It is the intent of the author to present a detailed overview of the great variety and specific types of geographical information that are available within the original land surveyors' notes and plats in a geographical manner. The author believes that these notes and plats have been overlooked for more than 100 years as a source of valuable geographical information. The author believes that these materials have been overlooked primarily because geographers did not realize the amount of material available; neither did they know how to use them and where to find them. These notes and plats create a seldom …
South Dakota Beef Industry, David Bruce Bau
South Dakota Beef Industry, David Bruce Bau
Electronic Theses and Dissertations
The beef industry in South Dakota is an important component of the state's agricultural economy. South Dakota beef producers market approximately 2.0 million head of cattle and calves annually with value in excess of 1.2 billion dollars in 1984. This revenue represents over 60 percent of total livestock receipts for the state and over 35 percent of total agricultural sales. In 1985, South Dakota cattle gross income was over $1,336 million. The significance of South Dakota cattle production is further demonstrated by a national ranking of fifth in beef cows that calved and ninth in total production of cattle and …
Talcott Parsons' Economic Sub-Systems Model And County-To-County Net Migration Patterns In South Dakota 1975-1980, Richard E. Barnes
Talcott Parsons' Economic Sub-Systems Model And County-To-County Net Migration Patterns In South Dakota 1975-1980, Richard E. Barnes
Electronic Theses and Dissertations
This paper explores Talcott Parsons' theoretical use of social systems models with applications for understanding the ability of a social system to exploit external economic resources, both capital and labor, while examining the pattern maintenance functions of the system that maintain the population base. As social systems address common problems, four basic categories of activity are delineated by Parsons. Concentrating on the vertical cells of Adaptation and Latency, the economic sub-system is examined for its affects upon the migration process. Four distinct economic types are identified with four different patterns of migration based upon the theoretical perspectives of Parsons. This …
A Contrastive Study Of The Phonological System Of English And Korean, Yeon-Ki Chae
A Contrastive Study Of The Phonological System Of English And Korean, Yeon-Ki Chae
Electronic Theses and Dissertations
This study is intended as a contrastive analysis of selected aspects of the phonological systems of English and Korean. Contrastive analysis is basically the manner in which most foreign language courses are taught. The field of contrastive linguistics has recently split into three areas: traditional contrastive analysis, error analysis, and interlanguage. Contrastive analysis is concerned with the comparison of two languages in order to determine both the similarities and differences between them. This study is based phonology which compares on the theory phonological of contrastive languages in order to determine areas properties of two in the phonological system of one …
Development Of An In Vivo Model To Determine The Biological Value Of Microbial Protein, Thomas A. Fritz
Development Of An In Vivo Model To Determine The Biological Value Of Microbial Protein, Thomas A. Fritz
Electronic Theses and Dissertations
The ruminant's ability to convert low quality and non-protein nitrogen (NPN) to high quality protein is as important as their ability to utilize cellulosic feeds. This unique characteristic will continue to be exploited in the future with increasing emphasis being placed on noncompetitive feedstuffs. There has been considerable progress in developing alternative energy sources in beef cattle diets. There has not been the same success in replacing dietary high quality preformed proteins with urea or other NPN sources in most production situations. The complexity of the digestive system in ruminants is well recognized by all who work with diet formulation …
Anaerobic Codigestion Of Whey In Municipal Sludge Digesters, Allan Dean Erickson
Anaerobic Codigestion Of Whey In Municipal Sludge Digesters, Allan Dean Erickson
Electronic Theses and Dissertations
Anaerobic digestion is a method of sludge stabilization commonly used by municipalities on wastewater sludges. The process takes place in a-sealed vessel in the absence of free molecular oxygen and biologically converts a portion of the organic material to primarily methane and carbon dioxide gas. The methane, which is the major component of natural gas, may be used as a source of energy for the treatment plant. The wastewater treatment facility utilized in this study was located in Sioux Falls, South Dakota. This facility uses the methane produced in the anaerobic sludge digestion process to heat the digesters as well …
A Comparison Of Osmotic Adjustment And Activity Of Cell Wall Associated Enzymes During Short-Term Drought In Winter Wheat, Russell William Gesch
A Comparison Of Osmotic Adjustment And Activity Of Cell Wall Associated Enzymes During Short-Term Drought In Winter Wheat, Russell William Gesch
Electronic Theses and Dissertations
A study was conducted in South Dakota to examine the affects of weather on growth and production of agronomic crops. Over a 17-year period of climatic variables were collected on a daily basis and put into weekly means values. It was reported that a frequent cause of loss for winter cereals was in early spring, when the conditions of extreme fluctuations of temperature and the rehydration state of the tissue affected survival. Osmotic adjustment is one metabolically controlled process that is compatible with the timeframe of weather change during this period which might ameliorate the adverse affects of excess free …
Ozonation Of A Municipal Groundwater Supply And Water Purification Plant Treatment Process Modifications To Prevent Trihalomethane Formation, Warren William Kersten
Ozonation Of A Municipal Groundwater Supply And Water Purification Plant Treatment Process Modifications To Prevent Trihalomethane Formation, Warren William Kersten
Electronic Theses and Dissertations
The City of Sioux Falls, South Dakota obtains its water supply from the Big Sioux aquifer which is located below and adjacent to the Big Sioux River. An extensive well field consisting of 34 wells has been developed to the north of the city. In addition to the well field, two surface water supply intakes in the Big Sioux River diversion channel are available for use during peak demand times of the year. Because the raw water generally has iron concentrations in the range of 3.0 to 6.0 milligrams per liter (mg/1) and manganese concentrations in the range of 2.0 …
Effect Of Transistor Selection On Feedback Vco Performance : ʻAnalytical - Numerical Studyʾ, Ravinder Kumar
Effect Of Transistor Selection On Feedback Vco Performance : ʻAnalytical - Numerical Studyʾ, Ravinder Kumar
Electronic Theses and Dissertations
The primary objective of this research was to find the effect of two important parameters, fT and Cc, of the transistor on the feedback line length, stub line length, tuning capacitor and external Q of the circuit, in designing a VCO. VCOs in this frequency range are normally designed using either an FET or a BJT, as an active device. In the following chapters, the model based preliminary designing process of a VCO is explained in detail, using a BJT. The first step in the process was to develop a better high frequency model of a BJT, since the existing …
A General Procedure To Calculate Fall Velocity Over The Full Range Of Sediment Sizes, Saher Shukri Khilfeh
A General Procedure To Calculate Fall Velocity Over The Full Range Of Sediment Sizes, Saher Shukri Khilfeh
Electronic Theses and Dissertations
It has long been recognized that the transport of sediment in water conveyance channels, such as rivers, streams and channels, is a serious and somewhat baffling problem. Not only does the transport of sediment affect the water quality and deposition in reservoirs, but it also indicates increased erosion. In addition, the energy given to the movement of sediment is a loss of energy from the water stream itself insofar as its flow rate is concerned. The movement of sediment is a complex prob1em. A number of methods have been deve1oped which compute sediment load. All of these formulae and methods …
Water Balance And Economic Analyses Of Reduced Pressure/Conservation Tillage Systems For Irrigated Corn Production, Brian Ketelhut
Water Balance And Economic Analyses Of Reduced Pressure/Conservation Tillage Systems For Irrigated Corn Production, Brian Ketelhut
Electronic Theses and Dissertations
Water balance and economic analyses of a five-year tillage and irrigation study in South Dakota were performed. Three primary tillage, preplant, operations (Plow, Disk and Till-Plant), two secondary tillage, post-emergence, operations (Inter-Row Tillage and a Control), and four sprinklers operating at pressures of 41 to 344 kPa were studied. Surface runoff, soil water storage and evapotranspiration values were 8, -8 and 100% of total water input values during a study period from late June to mid-August. Evapotranspiration values averaged 7.1 mm/day for the study period. Deep percolation loss was calculated to be zero. The Inter-Row Tillage treatment produced less surface …