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Production Of Staphylococcal Enterotoxin B In Foods With Varied Environmental Conditions, Robert Jefferey Heidelbauer Apr 1972

Production Of Staphylococcal Enterotoxin B In Foods With Varied Environmental Conditions, Robert Jefferey Heidelbauer

Electronic Theses and Dissertations

The number one cause of food poisoning is enterotoxin produced by certain strains of Staphylococcus aureus. Knowledge of the conditions which inhibit enterotoxin production in foods is of great economic importance. Previous research on staphylococcal food poisoning has been concerned with the presence and growth of Staphylococcus aureus in foods. Until recently, little work has been done with detection of the toxin in foods, even though proof of responsibility for the poisoning depends on direct demonstration of enterotoxin in the food. Before research on enterotoxin production could be feasible a rapid method of detection was needed. Early detection techniques involved …

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A Follow-Up Study Of Adult Home-Economics-Related Occupational Courses Conducted In South Dakota, 1968-1969, Sandra Jenter Hanson Apr 1972

A Follow-Up Study Of Adult Home-Economics-Related Occupational Courses Conducted In South Dakota, 1968-1969, Sandra Jenter Hanson

Electronic Theses and Dissertations

The objective of this study was to investigate the adult home economics related occupational courses conducted in South Dakota during the 1968-1969 school term. At the time this study was initiated, there were no specific criteria for adult occupational classes in vocational education for South Dakota. Classes were offered for persons who had already entered the labor market and who needed training or retraining to achieve stability or advancement in employment. Class enrollment, length of time for the course, and/or charge per hour depended on the objectives of the class and the type of class offered. Classes could have been …

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Properties Of Six South Dakota Bovine Picornaviruses, Janet Marie Mattson Apr 1972

Properties Of Six South Dakota Bovine Picornaviruses, Janet Marie Mattson

Electronic Theses and Dissertations

Since the first enterovirus isolates in 1957 and rhinovirus isolation in 1962, more than 600 isolations of bovine picornaviruses have been reported. Previous workers have been concerned primarily with serological comparisons among their own isolates. Only two viruses, LCR4 and BEV I, are available to investigators for serologic comparison. Picornaviruses have been isolated from animals with. respiratory diseases, diarrhea, and histories of abortions. Interest has not been that great because of the vast number of strains isolated, and at present, the studied strains have no disease attributed to them. Little has been done with these strains of virus except to …

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Taxonomy Of The Agropyron Intermedium And Agropyron Trichophorum Complex, Emmanuel Kidane Mariam Apr 1972

Taxonomy Of The Agropyron Intermedium And Agropyron Trichophorum Complex, Emmanuel Kidane Mariam

Electronic Theses and Dissertations

The genus Agropyron contains many important species useful for pasture and hay as well as soil conservation throughout the temperate regions. In the United States most of the cultivated species of Agropyron have been introduced from Russia, Siberia, and other regions around the Black Sea. Varieties have been selected from many of the original introductions and also some introductions have been used in their original condition. In some instances, it has been difficult to correctly identify the original introduction since they may have been introduced as mixtures. Two of the most important Agropyron species Agropyron intermedium (Host) Beauv and Agropyron …

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Distribution And Physiological Effects Of Ddt, Ddd And Dde In Penned Double-Crested Cormorants (Phalacrocorax A. Auritus), Michael Rober Hannon Apr 1972

Distribution And Physiological Effects Of Ddt, Ddd And Dde In Penned Double-Crested Cormorants (Phalacrocorax A. Auritus), Michael Rober Hannon

Electronic Theses and Dissertations

Ecological and trophic distributions of chlorinated hydrocarbon residues in Lake Poinsett, South Dakota were studied. Components of the ecosystem analyzed were water, bottom sediment, zooplankton, benthic algae, crayfish, aquatic insects and fish. Concentrations of aldrin, DDD, DDE, DDT, dieldrin, endrin, heptachlor, heptachlor epoxide, lindane, methoxychlor and toxaphene were determined by gas chromatography and thin-layer chromatography. DDT and its metabolites, DDD and DDE, were the highest residues detected in all trophic levels examined. Heptachlor, heptachlor epoxide, aldrin, dieldrin and lindane were present in the majority of sample types, while neither endrin nor methoxychlor was detected above analytical confidence limits in any …

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Model Study Of Laterally Loaded Piles In Sand, Jeong- Shwu Liu Apr 1972

Model Study Of Laterally Loaded Piles In Sand, Jeong- Shwu Liu

Electronic Theses and Dissertations

The most common function of piles is to transmit foundation loads which cannot be adequately supported at a certain level down to a depth at which adequate support is available. The classification of piles in terms of loading may be considered as vertically or laterally loaded. The laterally loaded pile is a structural member which sustains transverse loads in a similar way a beam does. The lateral force that the pile foundations is subjected to may be induced by earthquake, water waves, moving vessels, wind force, and lateral earth pressure, etc. Early techniques for analyzing laterally loaded pile foundations completely …

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Understanding And Accepting Self : A Measure Of Self Image Growth, Wanda M. Lightfield Apr 1972

Understanding And Accepting Self : A Measure Of Self Image Growth, Wanda M. Lightfield

Electronic Theses and Dissertations

The purpose of this research was to develop and test a technique which emphasized planned self-image learning experiences for children in a Head Start program. The goal of the program was to allow four- and five-year-old’s the opportunity to explore and begin to discover and know themselves. The series of four experiences used in this study was developed by the author to appeal to young children, be within their range of physical and mental capabilities, and have a positive effect on self-concept of body image. The hypothesis thus reads: When children are given opportunity to explore their individuality at an …

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A Study Of The System Treating Potato Processing Wastes At Fairfield Products Inc., Clark, South Dakota, Terry L. Hagin Apr 1972

A Study Of The System Treating Potato Processing Wastes At Fairfield Products Inc., Clark, South Dakota, Terry L. Hagin

Electronic Theses and Dissertations

During the 1970-1971 and the 1971-1972 processing seasons, Fairfield Products Inc. experienced serious waste disposal problems. Data obtained in June of 1971, shortly after the processing season ended, indicated that the 5-day Biochemical Oxygen Demand (BOD) of the Contents of the stabilization pond was 1180 mg/l. Numerous complaints from the citizens of Clark concerning the odor problem that had developed because of the overloaded treatment system were received by Fairfield Products Inc. as well as the State Department of Health. Acting upon these complaints, the State Health Department ordered Fairfield Products Inc. to retain a consulting engineer to design adequate …

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Comparison Of South Dakota State University Graduates Of The Home Economics And Of Other Curricula With Respect To Family Living Variables, Janice Hofer Grimm Mar 1972

Comparison Of South Dakota State University Graduates Of The Home Economics And Of Other Curricula With Respect To Family Living Variables, Janice Hofer Grimm

Electronic Theses and Dissertations

Marriage and the family as we have known them in the past are currently undergoing greater change at a more accelerated rate than ever before in history. Many writers concerned with the family and social problems would lead us to wonder if marriage is disappearing. There is an increase in communal living, exchange of marriage partners, and "open" campus dormitories. The divorce rate has been climbing steadily for a number of years. But when one looks more deeply into communal life for example, it is discovered that the duration of communal living is generally about two years. A study done …

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The Stereochemistry Of 5-Chloromethyl-5-Methyl-2-Oxo-2-Phenoxy-1,3,2- Dioxaphosphorinan And The Reaction Of Phenoxide Ion With 2-Chloro-5-Chloromethly-5-Methyl-2-Oxo-1,3,2-Dioxaphosphorinan, Samuel Dean Larsen Mar 1972

The Stereochemistry Of 5-Chloromethyl-5-Methyl-2-Oxo-2-Phenoxy-1,3,2- Dioxaphosphorinan And The Reaction Of Phenoxide Ion With 2-Chloro-5-Chloromethly-5-Methyl-2-Oxo-1,3,2-Dioxaphosphorinan, Samuel Dean Larsen

Electronic Theses and Dissertations

The primary objective of the research outlined in Part One is to assign the stereochemistry of some phosphorus containing heterocycles. In order to avoid confusion over nomenclature, most of the compounds described in this thesis will be named as derivatives of the 1,3,2-dioxaphosphorinan ring. For compounds described in the Experimental section, the designation of cis and trans will be assigned according to the arrangement of the phosphoryl oxygen at position 2 in relation to the chloromethyl group at C-5. Axial (ax) and equatorial (eq) designations will also refer to the chloromethyl group at 5, unless otherwise stated. Thus, the axial …

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The Role Of Agriculture In South Dakota's Economy : An Approach To Analysis, Mahlon George Lang Mar 1972

The Role Of Agriculture In South Dakota's Economy : An Approach To Analysis, Mahlon George Lang

Electronic Theses and Dissertations

Dependency of the state's economy upon the agricultural sector demands that economic research and public policy with respect to agriculture be based upon a more refined understanding of the magnitude and nature of the relationship between the farm and nonfarm economies. Ideally, the earliest stages of decision-making in government grow out of carefully developed research into the likely outcomes of alternative public policy decisions. At the macroeconomic level, such research requires a firm grasp of the complex chain of events which will occur as a result of changes in policy toward agriculture. At present, this chain of events is only …

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The Scheduling Of Patients In A Physician's Office, Viswanath Gowtham Mar 1972

The Scheduling Of Patients In A Physician's Office, Viswanath Gowtham

Electronic Theses and Dissertations

The objective of this investigation was to design a procedure by which an appointment scheduling system could be developed in which 75 percent of the punctual patients would be seen by the physician within fifteen minutes of their appointment tithes, and to test the system in an actual clinic situation. It was also decided that certain results would be tested for statistical significance. To devise an appointment system that would yield optimum benefits to the patients, to the physicians, and to the clinic as a whole, proper consideration must be given to the type of physician/patient interaction taking place in …

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Estimation Of Plant S And Zn Concentration By Soil Test Correlation, Douglas Darrel Koth Mar 1972

Estimation Of Plant S And Zn Concentration By Soil Test Correlation, Douglas Darrel Koth

Electronic Theses and Dissertations

Sulfur and Zn are two elements essential for plant growth. Deficiencies of these two plant nutrients occur commonly in many areas of the world. Zinc deficiency symptoms were noted in corn in South Dakota during the late nineteen fifties. In the summer of 1970, S deficiency symptoms appeared in corn (Zea mays L.) grown on sandy soils in Marshall County, South Dakota. Zinc deficiencies of corn occur more often when corn is grown on soils that are characterized by one or more of the following properties: sandy texture, low organic matter, severe past erosion, leveled for irrigation, high lime level, …

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A Study Of The Starting Effects Of Large Induction Motors, Basilio Gonzalez Mar 1972

A Study Of The Starting Effects Of Large Induction Motors, Basilio Gonzalez

Electronic Theses and Dissertations

A portion of this study analyzes the starting conditions of 5,000 HP motors connected to a 4,160-volt bus. The power to the motors is supplied through a transformer with a nameplate rating of 12/16/20/22.4 WTA, 115-4.16 kV. This study will include from one to five, 5,000 HP motors although the present installation consists only of two motors. The transformer may supply power for five motors running at a steady-state, full-load condition without exceeding the maxi mum power rating. The equivalent impedance of the 115 kV system has been determined from the short-circuit on the 115 kV side of the transformer. …

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Instructional Television In The Brookings, South Dakota, Elementary Schools, Jonell M. Kinyon Mar 1972

Instructional Television In The Brookings, South Dakota, Elementary Schools, Jonell M. Kinyon

Electronic Theses and Dissertations

This paper intends to determine if instructional television is widely used in the Brookings, South Dakota, elementary schools. It also attempts to determine what attitudes Brookings elementary teachers have about instructional television. Instructional television (ITV) is a modern-day teaching tool available and used in most schools. The cost to the individual school district is minimal after receiving sets have been purchased. Supplementary materials go with the programs and are available to the school from the public television station. A school may purchase any or none of the material it chooses. The advantages of instructional television are many, as will be …

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A Study Of An Innovative Program Designed To Aid In Meeting The Needs Of Disadvantaged Students In Florence, South Carolina, Theodore Howard Gasper, Jr. Mar 1972

A Study Of An Innovative Program Designed To Aid In Meeting The Needs Of Disadvantaged Students In Florence, South Carolina, Theodore Howard Gasper, Jr.

Electronic Theses and Dissertations

In many instances, students fail to adjust to the regular school situation and consequently drop out. To counteract this, Florence Public School District Number One, instituted a program titled "Special Vocational Education”, which is an attempt to meet the needs or what is termed the "disadvantaged students." This study is of utmost importance in that it is an investigation to determine whether or not this special program is keeping the majority of the enrolled disadvantaged students in school. It is also important to know the amount of growth in academic skills and social traits made by the students each year. …

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Utilization Of Encounter Groups In A Residence Hall, Robert Melville Keith, Jr. Mar 1972

Utilization Of Encounter Groups In A Residence Hall, Robert Melville Keith, Jr.

Electronic Theses and Dissertations

The research is focused on how to make residence hall living a more valid and relevant learning experience for the students. The physical arrangement of living areas in most traditional American residence halls is constructed with separate general living areas, i.e. wings. Since the residents of the wing are usually physically separated from the other wings, the individual wing becomes a relatively independent environment having living/interacting peculiarities all its own. The author of this research assumed that the individual wing is the most immediate dormitory influence on a resident. By concentrating a directed growth producing experience at the wing level, …

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A Study Of Groundwater Degradation Resulting From Wastewater Treatment By Lagooning, Douglas Carl Jensen Mar 1972

A Study Of Groundwater Degradation Resulting From Wastewater Treatment By Lagooning, Douglas Carl Jensen

Electronic Theses and Dissertations

During the past quarter century, the utilization of lagoons as a means of waste treatment has increased dramatically. Communities which utilize this means of waste treatment tend to consider the sewage lagoon as providing complete or final treatment. Consideration was not given to problems caused by the treated waste after it was removed from the immediate environment. In the past few years there has been an increasing demand that the environment be protected, and the methods of waste disposal have come under scrutiny. It has been found that the elements causing eutrophication of lakes and reservoirs exist in substantial amounts …

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The Relationship Of Hitting Ability In Baseball To Selected Anatomical Measurements And Motor Responses, Larry Lester Edlund Mar 1972

The Relationship Of Hitting Ability In Baseball To Selected Anatomical Measurements And Motor Responses, Larry Lester Edlund

Electronic Theses and Dissertations

Batters in all classifications of baseball, whether on the little league level or on the major league level, consistently strive for hitting proficiency. They know that baseball games are won by scoring runs. Hitting is a very important part of baseball but even the best hitters fail more than sixty percent of the time to hit safely. An example of this problem is evident in surveying the averages of the batting champions of the National and American League. During the years of 1928, 1948, and 1968, the National League batting champions had averages of 387, .376, and .335, respectively, and …

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Physiological, Anthropometrical, And Self Concept Changes In Overweight College Women As Affected By Exercise And Voluntary Diet, Connie J. Edlund Mar 1972

Physiological, Anthropometrical, And Self Concept Changes In Overweight College Women As Affected By Exercise And Voluntary Diet, Connie J. Edlund

Electronic Theses and Dissertations

The purpose of this study was twofold: to analyze the effects of a combination exercise program and voluntary diet on selected anthropometric and physiological variables of overweight girls at South Dakota State University, and to determine if measurable changes in self-concept were evident. Hypothesis 1. In the selected anthropometric and physiological variables of overweight girls there is a significant. improvement as a result of participation in a voluntary diet and prescribed exercise program. 2. There is no significant measurable change in self concept of overweight girls as a result of participation in a voluntary diet and prescribed exercise program. Limitations …

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Manpower Training Programs In South Dakota : Socio-Economic Attributes Of Participants Associated With Training Outcomes, James W. Delong Mar 1972

Manpower Training Programs In South Dakota : Socio-Economic Attributes Of Participants Associated With Training Outcomes, James W. Delong

Electronic Theses and Dissertations

Because of the unemployment, underemployment, poverty and occupational opportunity problems experienced in South Dakota, it is appropriate that manpower programs currently operating in the State be studied. To maximize the potential benefits of these programs it is necessary to understand their structure, their purpose, their goals and their effects. Likewise, the extent of participation in the programs should be determined along with finding out what type of trainee is benefitting the least or the most from the training experience. There has been considerable research into a wide spectrum of manpower programs and manpower needs in urban areas; however, relatively little …

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A Study Of Selected Demographic Factors Associated With Changes In The Aged Population Of South Dakota, 1960-1970, Bruce Gordon Breamer Feb 1972

A Study Of Selected Demographic Factors Associated With Changes In The Aged Population Of South Dakota, 1960-1970, Bruce Gordon Breamer

Electronic Theses and Dissertations

This study will attempt to investigate the following problem: What changes have transpired in the population aged 65 years and over in South Dakota from 1960 to 1970, and how do these changes very when associated with and controlled for selected demographic variables? The objectives of this thesis are as follows: 1. To determine the changes that have occurred in the population of South Dakota aged 65 and over from 1960 to 1970. 2. To analyze the changes that have occurred in the population of South Dakota aged 65 and over from 1960 to 1970 by comparing them to the …

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Extent Of Use Of Learning Packages And Their Acceptance By South Dakota Home Economics Teachers And Pupils, Marlene Bleeker Brands Feb 1972

Extent Of Use Of Learning Packages And Their Acceptance By South Dakota Home Economics Teachers And Pupils, Marlene Bleeker Brands

Electronic Theses and Dissertations

The purpose of this study· was to determine the extent to which home economics teachers in South Dakota were using learning packages. A second purpose was to determine teacher and pupil reaction to package teaching and learning. Of the 200 home economics teachers responding to the· teacher questionnaire, 72 or 36 percent indicated they had used learning packages during the 1970-71 school year. There was no significant difference among teachers with varying years of teacher experience as to whether or not they used packages. CAPSULES were the major source or type of learning package used by home economics teachers in …

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Analysis Of Selected Knife Fertilizer Applicators For Grassland Improvement, Vincent James Alsaker Feb 1972

Analysis Of Selected Knife Fertilizer Applicators For Grassland Improvement, Vincent James Alsaker

Electronic Theses and Dissertations

Soil nutrients need to be replenished from year to year. Nitrogen is a primary structural block in· proteins, chlorophyll, and many other compounds of plant and animal matter. One method of nutrient replenishment is to apply commercial fertilizer. This is especially important for pastures and grassland since very little organic matter is annually returned and mixed into the soil by cultural practices. Anhydrous ammonia, NH3, is one of the common nitrogen carrier fertilizers. Nitrogen fertilizers include anhydrous ammonia, which is handled as a liquid under pressure, liquid solutions, and nitrogen compounds in a granular state. Anhydrous ammonia injected beneath the …

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An Arab Perspective On The Rubaiyyat Of Omar Khayyam, Elias Agel Feb 1972

An Arab Perspective On The Rubaiyyat Of Omar Khayyam, Elias Agel

Electronic Theses and Dissertations

Since this study is concerned with a comparative study of the Rubaiyyat in both Arabic and English poetry, and since the main purpose is to arrive at some understanding of the Rubaiyyat through a knowledge of the Islamic literature, it is essential here to give a short introductory note of some technical terms and facts about the Arabic language and Arabic poetry in particular. In general, there is a great difference between the structure of Semitic languages and Indo-European languages, and hence between English and Arabic. The most characteristic feature of the Arabic language is that the great majority of …

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The Biology Of Geomylichus Gaomydis N. Sp. (Acari: Listrophoridae) From The Plains Pocket Gopher, Geomys B. Bursarius (Shaw), Charles Campbell Coffman Jan 1972

The Biology Of Geomylichus Gaomydis N. Sp. (Acari: Listrophoridae) From The Plains Pocket Gopher, Geomys B. Bursarius (Shaw), Charles Campbell Coffman

Electronic Theses and Dissertations

Geomylichus geomydis n. sp. is an obligate ectoparasite and associated with it on Geomys b. bursarius were large numbers of four other major ectoparasite species and small numbers of eight miscellaneous acarine taxa. Descriptions and measurements of life cycle stages of Geomylichus geomydis n. sp. are given. Geographical and host distribution records are also included. Seasonal population numbers of Geomylichus geomydis n. sp. and the other four major ectoparasite species were analyzed. Infestation rates for G. geomydis n. sp. were determined for seasons of the year and sexes and ages of the host. A least-squares analysis of variance was used …

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Development Of Techniques For Distribution Of Baits To Raccoon For Chemosterilant Studies, Richard L. Nelson Jan 1972

Development Of Techniques For Distribution Of Baits To Raccoon For Chemosterilant Studies, Richard L. Nelson

Electronic Theses and Dissertations

Sudan Red IV, Sudan Black B, and demethylchlortetracycline (DMCT) were tested as physiological markers in baits for raccoon (Procyon lotor). DMCT was readily detected in the jawbone of raccoons given 50 mg when examined under an ultraviolet light at period of 7, 30, 75, and 450 days following treatment. Seven days after administering 75 mg of Sudan Red IV, it could not be detected in fat deposits. Sudan Black B, administered in similar dosage, could not be detected at 30 days. A total of 1826 chicken eggs containing 50 mg DMCT was distributed on a 25 square-mile study area between …

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Food Habits Of Fish In A Multispecies Farm Pond, Thomas W. Gengerke Jan 1972

Food Habits Of Fish In A Multispecies Farm Pond, Thomas W. Gengerke

Electronic Theses and Dissertations

Food habits of yellow perch, bluegill, and black crappie were studied during 1970 and 1971 in Abbey Pond, South Dakota. Aquatic insects, zooplankton, mollusks, and fish were the most frequently consumed food items by the three species. Yellow perch led primarily on aquatic insects, zooplankton, and mollusks. Aquatic insects were dominant (by volume) in 40.0 and 61.5 percent of the samples respectively for the two years. Zooplankton, mollusks, aquatic insects, and bryozoans were the dominant food items by volume of adult bluegills. On an annual basis aquatic insects were the most important food item in the diet. Adult black crappies …

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Gentilesse And Gentility : Moral Criticism In The Novels Of Charles Dickens, Phyllis Anderson Ballata Jan 1972

Gentilesse And Gentility : Moral Criticism In The Novels Of Charles Dickens, Phyllis Anderson Ballata

Electronic Theses and Dissertations

There has been a considerable revival of interest in Dickens in the last thirty years. "As Bernard Darwin said when critical interest in Dickens was just beginning to gain momentum, ‘Mr. Pickwick once took another glass of punch just to see whether there was any orange-peel in it, because orange-peel always disagreed with him; and we can now all read Dickens yet again just to see if we were wrong about him.'" Edmund Wilson's seminal essay “Dickens: The Two Scrooges" appeared first in 1940 and again in The Wound and the Bow in 1947. Humphrey House's valuable Dickens World came …

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A History Of Theatre At South Dakota State University 1892 Through Summer, 1972, Xavia Diane Arndt Jan 1972

A History Of Theatre At South Dakota State University 1892 Through Summer, 1972, Xavia Diane Arndt

Electronic Theses and Dissertations

No abstract provided.

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