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Articles 30271 - 30300 of 35945
Full-Text Articles in Entire DC Network
Mineralogy And Origin Of The Medicine Earth Sulfates In The Bucatunna Clay, Central Mississippi / By Dan Albert Thompson, Dan Albert Thompson
Mineralogy And Origin Of The Medicine Earth Sulfates In The Bucatunna Clay, Central Mississippi / By Dan Albert Thompson, Dan Albert Thompson
Electronic Theses and Dissertations
No abstract provided.
Ultrastructure Demonstration Of Uric Acid In The Nephrons Of Thekidney Of Gallus Domesticus, Chester Hamilton Lake
Ultrastructure Demonstration Of Uric Acid In The Nephrons Of Thekidney Of Gallus Domesticus, Chester Hamilton Lake
Electronic Theses and Dissertations
No abstract provided.
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 …
The Effects Of Added Dry Whey On Yield And Acceptability Of Cheddar Cheese, James M. Wingfield
The Effects Of Added Dry Whey On Yield And Acceptability Of Cheddar Cheese, James M. Wingfield
Electronic Theses and Dissertations
Cheese production and sales are a major part of the U.S. dairy industry. Total hard cheese sales have increased 60% in the past 10 yr. Per capita consumption of cheese for the same period has risen from 2.81 kilograms (kg) to 4.03 kg for a 43% increase. In response to greater consumer demand the amount of milk utilized in cheese production has increased markedly during the past quarter century rising from the low of 10% of annual milk production in 1950 to 24% in 1976. This recent increase in cheese production emphasizes the importance of achieving maximum yields of cheese …
Water And Nitrogen Husbandry For Irrigated Corn In Central South Dakota, Stanley Eugene Papendick
Water And Nitrogen Husbandry For Irrigated Corn In Central South Dakota, Stanley Eugene Papendick
Electronic Theses and Dissertations
The purpose of this study was to evaluate the effects of supplemental water and nitrogen on corn yields. Central South Dakota was chosen as the location for this study because of its existing irrigation and the limited research data available from that part of the state. The objectives were: (1) to determine corn yield response to various water regimes, (2) to determine corn yield response to nitrogen applications, and (3) to determine corn yield response to nitrogen application methods.
A Study Of The Attitudes Of University Faculty Academic Advisers Toward The Reserve Officers Training Corps On The Campus Of South Dakota State University, Terry Michael Monrad
A Study Of The Attitudes Of University Faculty Academic Advisers Toward The Reserve Officers Training Corps On The Campus Of South Dakota State University, Terry Michael Monrad
Electronic Theses and Dissertations
Purpose of this study is to determine the attitudes of university faculty academic advisers at South Dakota State University toward the Reserve Officers Training Corps (ROTC).
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 …
Effects Of Strain On Response Of Laying Hens To Low Protein Diets And Amino Acid Supplements, Ali B. Kashani
Effects Of Strain On Response Of Laying Hens To Low Protein Diets And Amino Acid Supplements, Ali B. Kashani
Electronic Theses and Dissertations
Corn is by far the most widely used cereal grain in the United States for poultry feeding. In addition to its high energy content, corn provides adequate amounts of the essential fatty acids for maximum rates of growth and egg production. Palatability and ample xanthophyll and provitamin A contents of fresh corn are some o the other contributing factors for its popularity in livestock feeding. The most serious limitation in the nutritional value of corn as well as other cereal grains lies in the fact that they are low in both quantity and quality of protein. It has been a …
Nutritional Adequacy Of The Diets Of Pregnant Cheyenne River Sioux, Kathy M. Dirks
Nutritional Adequacy Of The Diets Of Pregnant Cheyenne River Sioux, Kathy M. Dirks
Electronic Theses and Dissertations
A nutrition survey was conducted in which the diets of 79 pregnant Sioux Indian women living on the Cheyenne River Reservation in South Dakota were evaluated. A 24-hour recall was used and background information was collected by the researcher at Public Health Service prenatal clinics. The dietary intakes were evaluated according to Recommended Dietary Allowances (RDA). Diets were considered to be good if they provided all nutrients (protein, calcium, iron, vitamin A, thiamin, riboflavin, niacin, and ascorbic acid) and energy at or above recommended levels, and poor if they provided one or more nutrients below two-thirds the RDA. In accordance …
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.
Dietary Intake And Influence Of Nutrition Education For Selected Elderly In The Congregate Meals Program, Grace E. Anderson
Dietary Intake And Influence Of Nutrition Education For Selected Elderly In The Congregate Meals Program, Grace E. Anderson
Electronic Theses and Dissertations
Nationally, the elderly know fewer facts about nutrition as compared to younger people (41). Senior citizens have relatively poor diets and many are at nutritional risk. The Congregate Meals Program (CMP) provides one low-cost meal a day, five days a week for participants over 60 years of age and their spouses. The meal is to provide one-third of the RDA for the elderly. Based on these generalities, the questions investigated in three eastern South Dakota nutrition sites, with this research are: 1) What is the contribution of the CMP in the total dietary pattern of participants as recorded on a …
Blood Gases And Certain Energy Metabolite Concentrations In Ammonia Intoxicated Sheep, George E. Romkema
Blood Gases And Certain Energy Metabolite Concentrations In Ammonia Intoxicated Sheep, George E. Romkema
Electronic Theses and Dissertations
The objectives of this study were to measure the changes occurring in certain blood parameters during acute ammonia intoxication. It was hoped that these changes would reflect and thereby provide insight into the effects of acute ammonia intoxication on metabolic processes. Blood pH, p02, and pC02 were measured in order to observe possible metabolic disturbances as reflected in the acid-base balance. Glucose was measured due to its importance as a basic energy source and metabolic intermediate. Volatile fatty acids were measured because they serve as an important energy source in ruminants. Non-esterified fatty acids and triglycerides were …
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.
An Examination Of High School Photography Classes Offered As Part Of The Regular Curriculum In Iowa, Nebraska, North Dakota, South Dakota, And Wyoming, Jeff Stingley
Electronic Theses and Dissertations
The purpose of this study was to examine schools within a five-state area that offer photography courses as part of the regular curriculum. Specific areas investigated were photography courses offered, length of classes, number of classroom sessions, name and author of textbooks, class sizes, hours of darkroom use, student laboratory fees, film processing procedures, types of school-owned cameras, photography budgets, teacher qualifications, photography contests, success of programs, equipment and cost to initiate a basic course, use of second -hand equipment, years courses were offered, classroom instruction materials , and class outlines. A two-page questionnaire was mailed to 60 high school …
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.
Discharge Measurement And Energy Efficiency Evaluation Of Irrigation Pumping Plants, Bruce A. Jennings
Discharge Measurement And Energy Efficiency Evaluation Of Irrigation Pumping Plants, Bruce A. Jennings
Electronic Theses and Dissertations
No information has been available regarding efficiencies of electric irrigation pumping plants in South Dakota. Pumping plant discharge, a key parameter in the calculation of pumping plant efficiency, is often difficult to measure in the field. A project was initiated at South Dakota State University in 1976 to investigate field pumping plant efficiencies. The following objectives were established for the project. 1. To investigate various methods of measuring irrigation pumping plant discharge. 2. To develop a suitable field procedure for determining electric irrigation pumping plant efficiency. 3. To measure energy efficiency of selected electric irrigation pumping plants in South Dakota.
A Polyperiod Analysis Of Profit Maximizing Strategies With Beef Cow Herds Under Variable Weather Conditions In North Central South Dakota, David H. Jibben
A Polyperiod Analysis Of Profit Maximizing Strategies With Beef Cow Herds Under Variable Weather Conditions In North Central South Dakota, David H. Jibben
Electronic Theses and Dissertations
This study used three polyperiod linear programming models to analyze the effects of several management strategies on the organization of a hypothetical 2,560 acre ranch in North Central South Dakota. Two models including three-year drought periods and one model with no drought were constructed. In building the two drought models, several assumptions concerning drought assistance to cattle producers were made and incorporated into the models. The major findings of the study were as follows: 1. A land use program using 620 acres of cropland and 1,800 acres of pasture land resulted in greater total profit than a land use program …
Midwestern Mosaic: A Study Of The Homogeneity Of Ethnic Populations In Omaha, Nebraska, 1880, Kathleen Louise Fimple
Midwestern Mosaic: A Study Of The Homogeneity Of Ethnic Populations In Omaha, Nebraska, 1880, Kathleen Louise Fimple
Electronic Theses and Dissertations
The aim of this study is to delimit neighborhoods in an urban setting using the ethnic homogeneity of the population as the major criteria. The study will seek to compile data at a very large scale--i.e., city blocks or streets--and present cartographically an accurate delimitation of community and neighborhood. In addition, some analysis of the ethnic homogeneity of such areas will be carried out in order to assess the selective inclination of certain national groups to concentrate spatially. The specific study area is Omaha, Nebraska, in the year, 1880.
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 …
Factors Affecting South Dakota Guidance Counselors' Perceptions Of The Career Opportunities Of Native American Students, Janet A. Gullickson
Factors Affecting South Dakota Guidance Counselors' Perceptions Of The Career Opportunities Of Native American Students, Janet A. Gullickson
Electronic Theses and Dissertations
The objectives of this study are as follows: 1. The identification of guidance counselors' perceptions of occupational opportunities existent for their Native American clients. 2. The determination of the extent to which the factors of race, sex and school location are associated with guidance counselors' perceptions of Native American students' occupational opportunities. 3. The development of a model to describe and predict differences in guidance counselors' perceptions of Native American students’ occupational opportunities. The objectives of this study coincide in part with the objectives of a larger research project ongoing in the Rural Sociology Department at South Dakota State University. …
A Study Of The Macrobenthic Community In Lake Cochrane, South Dakota, David R. German
A Study Of The Macrobenthic Community In Lake Cochrane, South Dakota, David R. German
Electronic Theses and Dissertations
As part of a continuing study of the biological community of Lake Cochrane, South Dakota, a quantitative survey of the macroscopic bottom fauna was made between the early part of April, 1976 and December, 1976. It was hoped that such a study could provide baseline data for an understanding of the interactions that occur between benthic organisms and other biological components of the lake system. The lake's primary productivity and phytoplankton and zooplankton standing crops have previously been studied by Haertel (1972, 1976) and Steinberg (1972). When this study was being conducted, sediment control dams were being built on three …
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 …
Effectiveness Of A Curriculum To Change Attitudes Of Adolescents Toward The Aged, Dorothy Jean Zuiderhof
Effectiveness Of A Curriculum To Change Attitudes Of Adolescents Toward The Aged, Dorothy Jean Zuiderhof
Electronic Theses and Dissertations
The primary purpose of the present study was to develop a two-week curriculum entitled Design for Dignity. The curriculum was to stimulate the student to think about aging and to improve his attitudes toward aging and the aged. More specifically, the instructional unit attempted to (1) provide accurate information about the aging process and sensitize the students to the needs of those who are presently elderly, and (2) help the students realize that they are patterning their own old age. The area of the older person was a suitable area in which to develop a curriculum as few available resources …
An Assessment Of The Understanding Of Human Sexuality Concepts Among Undergraduates At South Dakota State University, Les C. Odegaard
An Assessment Of The Understanding Of Human Sexuality Concepts Among Undergraduates At South Dakota State University, Les C. Odegaard
Electronic Theses and Dissertations
The purpose of the study was to determine the level of understanding in the area of human sexuality among undergraduates at south Dakota State University.
Clothing Of Pioneer Women Of Dakota Territory, 1861-1889, Joyce Marie Larson
Clothing Of Pioneer Women Of Dakota Territory, 1861-1889, Joyce Marie Larson
Electronic Theses and Dissertations
Hard-times of the Dakota Territory demanding strenuous physical labor compelled the investigator to study the clothing and dressmaking needs of pioneer women 1861-1889. This historical study of costume provides an insight into the life styles [sic] and the role of pioneer women as they interpreted clothing into their physical and utilitarian needs in adapting to the new frontier. The purpose of this research was to study the costume of the American women who resided in the Dakota Territory prior to the statehood of South Dakota, November 2, 1889. During the period 1861-1889, the Missouri River served as a geographical barrier …