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Anatomical Studies During Floral Induction, Evocation And Initiation In Eucharis Grandiflora, Planch., The Amazon Lily, Raphael T. Deba
Anatomical Studies During Floral Induction, Evocation And Initiation In Eucharis Grandiflora, Planch., The Amazon Lily, Raphael T. Deba
Electronic Theses and Dissertations
Several questions were posed at this point which led to the hypotheses to be tested in this investigation. The experimental design was divided into 3 phases. For a detailed description of the design, see Appendix A. Phase I of this study involved a comparative study of the anatomy of the apices of plants of Eucharis grandflora, the Amazon lily, exposed to heat (27-29° C) for one, two, three, four or five weeks, in an effort to see if manifestations of floral evocation and/or initiation are in evidence when compared to the control. Since the time from the end of heat …
Comparison Of Theoretical And Experimental Results Pertaining To R-Curves In Low And High Ductility Solids, Rabindra Nath Dash
Comparison Of Theoretical And Experimental Results Pertaining To R-Curves In Low And High Ductility Solids, Rabindra Nath Dash
Electronic Theses and Dissertations
Existing linear elastic fracture mechanics and J-integral analyses are well suited for safety assessments of high-strength, low-toughness materials. These analyses apply only to the onset of crack growth, which is usually tantamount to crack instability and structural failure in that class of materials. However, this is not the case for the low-strength, high-toughness materials in which crack instability may be preceeded [sic] by extensive stable crack growth under rising loads. Here, a substantial margin of safety may exist even when the onset of crack growth is imminent. This thesis describes research leading to a ductile fracture-mechanics methodology designed to treat …
The Vegetational Composition Of The Samuel H. Ordway Memorial Prairie, Fred K. Carl
The Vegetational Composition Of The Samuel H. Ordway Memorial Prairie, Fred K. Carl
Electronic Theses and Dissertations
This thesis represents the first half of a two year study of the vegetational composition of the Samuel H. Ordway, Jr. Memorial Prairie. Quadrat and point frame sampling was completed along 100 transects distributed over the 10 pastures. Biomass for the study area was determined to be 133. 3 g•m-2 for live weight and 104.0 g•m-2 for mulch. Basal cover for Ordway Prairie was found to be 12.5%. The study area was found to be predominantly occupied by warm season species. Andropogon scoparius was found to be highest in relative density while Carex was highest in relative frequency. …
Primary Productivity In Lake Cochrane, South Dakota, During And After Sediment-Control Dam Construction, Randall Francis Brich
Primary Productivity In Lake Cochrane, South Dakota, During And After Sediment-Control Dam Construction, Randall Francis Brich
Electronic Theses and Dissertations
Lake Cochrane was selected for this study because of its history of superior water transparency (Haertel 1972, 1976b). Significant amounts of silt and chemicals enter the lake with runoff at 3 locations (Haertel unpublished data). Restriction or impediment of runoff at these locations should result in improved water transparency (Haertel 1976b, Siegel 1975). Therefore, East Dakota Conservancy Sub-District and the South Dakota Department of Wildlife, Parks, and Forestry decided to impede runoff waters by means of 3 sediment-control dams incorporated into the perimeter road system of the lake and financed through a grant from the Environmental Protection Agency (Siegel 1975) …
Factors Affecting Oat Yields In East-Central South Dakota, Thomas M. Brandner
Factors Affecting Oat Yields In East-Central South Dakota, Thomas M. Brandner
Electronic Theses and Dissertations
The social and economic importance of accurate crop-climate forecasting and agricultural data acquisition has been noted. The advances in methodology to analyze the relationship, has also been touched upon. The particular problem considered in this paper is to determine what factors play a significant role in the output, of oat yields. The yields will be correlated with monthly precipitation and temperature figures and a yearly fertilizer application variable. If some of these variables are found to be significant-they can be used in an equation to help predict oat yields. It is hoped that this study will add to the knowledge …
Application Analysis Of A Cellular Geographic Information System, Michael Edward Wehde
Application Analysis Of A Cellular Geographic Information System, Michael Edward Wehde
Electronic Theses and Dissertations
AREAS, the Area REsource Analysis System, was developed by the author as an analytical tool for resource data manipulation in a spatial context. The data base and processing software design factors relevant to economical application are reviewed. The investigation seeks to define a procedure for selection and justification of the grid cell size used to quantify the spatial domain. The performance of a cellular information system is measured in terms of mapping and inventory accuracy. These measures of performance are evaluated for various cellularizations of a single map. The interboundary distance distribution is justified as the only unique characterization of …
Diversity And Density Of Shelterbelt Bird Communities, Thomas E. Martin
Diversity And Density Of Shelterbelt Bird Communities, Thomas E. Martin
Electronic Theses and Dissertations
The number of bird species and the density of each species were monitored in 69 shelterbelts in eastern South Dakota during spring migration and breeding seasons in 1976 and 1977. A total of 44 different species of birds were found during breeding and 68 species during spring migration. Approximately 60 to 80% of the species in a shelterbelt eat insects as part of all of their diet. Most of these bird species are territorial. Usually only 1-2 pairs of a territorial species will reside in any one shelterbelt. This low density is caused by the limited habitat area that shelterbelts …
Diet And Nutrition Of The Pronghorn Antelope, Norman C. Messenger
Diet And Nutrition Of The Pronghorn Antelope, Norman C. Messenger
Electronic Theses and Dissertations
Pronghorn antelope (Antilocapra americana) in northwestern South Dakota consumed at least 32 different plants species. Major forage plants were big sagebrush (Artemisia tridentate), silver sage (A. cana), yellow sweet clover (Meliotus officinalis), gold aster (Chrysopsis villosa), and blue grama (Bouteloua gracilis). Cultivated small grain crops were not a major food source of pronghorn. Differences in diet composition, plant groups, plant groups and time of use and plant group, area, month interaction were significant. Average in vitro digestion of 31 food plants was 51 percent. Mean digestion of grasses was 57 percent, forbs 42 percent, and shrubs 55 percent. Yearling male …
Breeding Biology And Prey Selection Of Ferruginous Hawks In Northwestern South Dakota, Charles L. Blair
Breeding Biology And Prey Selection Of Ferruginous Hawks In Northwestern South Dakota, Charles L. Blair
Electronic Theses and Dissertations
A study of the breeding biology and prey selection of ferruginous hawks (Buteo regalis) was conducted in northwestern South Dakota during 1976 and 1977. Twenty four pairs were located in 1976 and 18 pairs attempted to nest; 17 pairs located in 1977 attempted to nest. The ecological density of breeding pairs was approximately one per 100 km2. Young fledged per nesting attempt averaged 1.89 in 1976 and 2.29 in 1977. All but one nest were located in unbroken, lightly grazed prairie and all were situated on hills, buttes, or river cutbanks. General nest orientation was toward the south and west. …
Fungal Control Methods, Diets And Water Temperatures Used To Culture Paddlefish, Polydon Spathula, Ronald L. Brandt
Fungal Control Methods, Diets And Water Temperatures Used To Culture Paddlefish, Polydon Spathula, Ronald L. Brandt
Electronic Theses and Dissertations
Studies were conducted at Gavins Point National Fish Hatchery, South Dakota, in 1976 and 1977, to evaluate the effects of diet and water temperature on growth and survival of paddlefish, Polyodon spathula, young, and the effects that fungicides have on hatching success and fry survival. The W-7 cool water diet was fed hourly and three times daily while the Liv commercial diet was fed hourly to paddlefish young for 40 days after swim-up. Average survival rate and total length of paddlefish fed W-7 hourly were 16.0% and 30 mm, those fed W-7 three times daily were 10.0% and 23 mm, …
Non-Game Birds In Relation To Habitat Variation On South Dakota Wetlands, Michael J. Weber
Non-Game Birds In Relation To Habitat Variation On South Dakota Wetlands, Michael J. Weber
Electronic Theses and Dissertations
Non-game birds on South Dakota wetlands were surveyed on 476 quarter sections representing the major portion of South Dakota excluding the Missouri River and its impoundments and the Black Hills. Two surveys were conducted, one in May and a second in June, in both 1975 and 1976. The distribution of 13 non-game species was analyzed by physiographic strata and wetland classification: red-winged blackbird {Agelaius phoeniceus), yellow-headed blackbird (Xanthocephalus xanthocephalus), Wilson's phalarope (Steganopus tricolor), black tern (Chlidonias niger), lesser yellowlegs (Totanus flavipes), sora {Porzana carolina), marbled godwit (Limosa fedoa), willet (Catoptrophorus semipalmatus), American avocet (Recurvirostra americana}, American bittern {Botaurus lentiginosus), great …
Cinematographic Analysis Of Ball Trajectory During Free Throw Shooting Among Members Of The South Dakota State University Varsity Basketball Team, Herbert Harold Hofer Jr.
Cinematographic Analysis Of Ball Trajectory During Free Throw Shooting Among Members Of The South Dakota State University Varsity Basketball Team, Herbert Harold Hofer Jr.
Electronic Theses and Dissertations
Two-hundred and twenty successful and 143 unsuccessful free throw attempts, performed by 20 members of the South Dakota State University men's varsity basketball team, were photographed. Components of each trial which were analyzed included: (1) angle of release, (2) angle of entry, (3) height of the arch, (4) horizontal distance of the point of release from the highest point of the arch, (5) horizontal distance of the highest point of the arch to the front of the rim, and (6) height of the release. The mean and standard deviation values for each component were determined. A correlation analysis revealed that …
Nucleophilic Substitution At Phosphorus In Six-Membered Ring Phosphate Esters, Mike Bauman
Nucleophilic Substitution At Phosphorus In Six-Membered Ring Phosphate Esters, Mike Bauman
Electronic Theses and Dissertations
From these results the following conclusions may be drawn: 1. The stereochemistry of nucleophilic substitution at phosphorus is influenced by the basicity of the leaving group with the more basic leaving group favoring retention. 2. Lithium ion diverts the reaction to retention by forming an intimate ion-pair with the nucleophile which then attacks phosphorus. This associated ion is less reactive than the unassociated nucleophile. 3. For the retention mechanism the leaving group participates in the rate determining step. 4. The mechanism for retention entails a more sterically unfavorable configuration than for inversion.
A Study Of Residential Water Demand In And Around The Big Sioux River Basin, Jeffrey Platek
A Study Of Residential Water Demand In And Around The Big Sioux River Basin, Jeffrey Platek
Electronic Theses and Dissertations
The objectives of this study were to: (1) derive a demand function for residential water use for spring and summer quarters which would be representative of the average household within the Big Sioux River Basin and adjacent areas. The function was based on variables for price, number of persons per household, average annual income per capita, and average monthly rainfall; (2) determine significant variables which affect residential water consumption; and (3) derive price and income elasticities which will show the response in water consumption to changes in the price of water and per capita income.
News Photography By North Plains Daily Newspapers: A Study Of Editors' Attitudes And Management Practices, Thomas Edward Hodges, Jr.
News Photography By North Plains Daily Newspapers: A Study Of Editors' Attitudes And Management Practices, Thomas Edward Hodges, Jr.
Electronic Theses and Dissertations
The purpose of this study is to examine the attitudes and management practices of daily newspaper editors in North and South Dakota toward news photography with the hope of identifying a relationship between those attitudes and practices and the manner in which those newspapers use news photographs.
Methods Of Analysis Of Yield From Antecedent Winter Water, Charles Gregg Carlson
Methods Of Analysis Of Yield From Antecedent Winter Water, Charles Gregg Carlson
Electronic Theses and Dissertations
This investigation is an evaluation of methods of analysis of water conserved during off-season periods and evaluation of the effect on the subsequent crop. Energy and water shortages during the midsummer peak irrigation season have forced farmers to consider the possibility of irrigation at times other than peak growth stages as an alternative practice. Dryland farmers are interested in the benefit of water conserving cultural practices such as summer fallow and snow trapping. To evaluate the benefit of these off-season practices, a yield function based upon water availability is necessary. In order to better understand the effects of off-season irrigation …
Studies On The Gas Given Off By Yeast When It Goes From An Anaerobic To Aerobic Metabolism, David C. Potts
Studies On The Gas Given Off By Yeast When It Goes From An Anaerobic To Aerobic Metabolism, David C. Potts
Electronic Theses and Dissertations
Several investigators have observed that when yeast cells (yeast) go from a strictly anaerobic environment to an aerobic oner and glucose is added a negative value is recorded on the manometer. This phenomenon indicates that a gas has been given off by the yeast. The purpose of this research was to identify the gas and determine how it arises.
Molybdenum(V) Solutions In Hydrobromic Acid, Edwin Charles Perley
Molybdenum(V) Solutions In Hydrobromic Acid, Edwin Charles Perley
Electronic Theses and Dissertations
Interest in the coordination chemistry of molybdenum has increased greatly in recent years because of the discovery that molybdenum plays an active role in several redox enzymes. Model systems have been devised to gain insight into the function of molybdenum in these enzymes. Most model systems are believed to contain an oxomolybdate(V) dimer in equilibrium with a redox active monomer or dimer. A relatively simple system that shows important similarities to model systems is a molybdenum(V) solution in hydrobromic or hydrochloric acid. As in the model systems, these solutions are believed to contain monomers and dimers in equilibrium. The equilibria …
The Development Of Aesthetic Awareness Through Music Education / Kim Mckenzie Red, Kim Mckenzie Red
The Development Of Aesthetic Awareness Through Music Education / Kim Mckenzie Red, Kim Mckenzie Red
Electronic Theses and Dissertations
No abstract provided.
Toxin Produced By A Bacillus Isolated From The Intestine Of A Surgeonfish / By Samuel Murry Tumey, Samuel Murry Tumey
Toxin Produced By A Bacillus Isolated From The Intestine Of A Surgeonfish / By Samuel Murry Tumey, Samuel Murry Tumey
Electronic Theses and Dissertations
No abstract provided.
The Effect Of Large Settlements On The Stability Of Embankments, Somanath S. Hiremath
The Effect Of Large Settlements On The Stability Of Embankments, Somanath S. Hiremath
Electronic Theses and Dissertations
No abstract provided.
Separating Sets And Moore Spaces, Gwendolyn Polk Aldridge
Separating Sets And Moore Spaces, Gwendolyn Polk Aldridge
Electronic Theses and Dissertations
No abstract provided.
Diffusion And Settling Of Fine Sediments In Excavated In-Line Sediment Traps, Hong-Chai Chang
Diffusion And Settling Of Fine Sediments In Excavated In-Line Sediment Traps, Hong-Chai Chang
Electronic Theses and Dissertations
No abstract provided.
The Development And Demonstration Of A Model And Methodology Toquantify The Cost Of Controlling Restricted Pharmaceuticals In Ahospital, Zack Thomas Grapes
The Development And Demonstration Of A Model And Methodology Toquantify The Cost Of Controlling Restricted Pharmaceuticals In Ahospital, Zack Thomas Grapes
Electronic Theses and Dissertations
No abstract provided.
How The International Students At The University Of Mississippi Perceive American Television, Bernard Opubo Graham-Douglas
How The International Students At The University Of Mississippi Perceive American Television, Bernard Opubo Graham-Douglas
Electronic Theses and Dissertations
No abstract provided.
Numerical Methods For Finding Complex Roots Of Functions, Peggy Emmons Geddie
Numerical Methods For Finding Complex Roots Of Functions, Peggy Emmons Geddie
Electronic Theses and Dissertations
No abstract provided.
Computer Simulation Of Two-Dimensional Cascade Flows Of Ideal Fluids / By Tsu-Yi Su, Tsu-Yi Su
Computer Simulation Of Two-Dimensional Cascade Flows Of Ideal Fluids / By Tsu-Yi Su, Tsu-Yi Su
Electronic Theses and Dissertations
No abstract provided.
An Application Of Cluster Analysis To The Detection Of Structurein Sociometric Data, Frederick Lemonte Jones
An Application Of Cluster Analysis To The Detection Of Structurein Sociometric Data, Frederick Lemonte Jones
Electronic Theses and Dissertations
No abstract provided.
Estrangement In The Life And Selected Works Of George Crabbe, Mildred Newlin Mcmillan
Estrangement In The Life And Selected Works Of George Crabbe, Mildred Newlin Mcmillan
Electronic Theses and Dissertations
No abstract provided.
Choice Of Effort Expenditure Distribution As A Function Of Cumulative Effort Criterion And Reinforcement Rate / By Jeffrey Zimmerman, Jeffrey Zimmerman
Choice Of Effort Expenditure Distribution As A Function Of Cumulative Effort Criterion And Reinforcement Rate / By Jeffrey Zimmerman, Jeffrey Zimmerman
Electronic Theses and Dissertations
No abstract provided.