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Effect Of Zinc Nutriture And Contraceptive Steroid Injection On Body Composition Of Young Female Rats, Sang Ai Hahn

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Forty-nine female rats initially weighing about 95 grams were used in this experiment to determine the effect of contraceptive hormones on body composition in zinc deficient and zinc supplemented rats. Four treatment groups were: 2 ppm of dietary zinc with daily contraceptive steroid injections, or with placebo injection, and 140 ppm of dietary zinc with contraceptive steroid injection or with placebo. The daily injected steroids consisted of 0.1ug of Ethynyl Estradiol and 0.1mg of Medroxyprogesterone in 0.1ml of corn oil. Non-hormone treated groups received 0.1ml of plain corn oil. All injections were administered into the Gluteus Maximus muscle. Food intake, …

Milk Protein Analysis By Automated Ultraviolet Spectroscopy, R. Ford Wilkinson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

An automated continuous flow analysis for milk protein utilizing ultraviolet spectroscopy resulted in a correlation coefficient of 0.972 and a standard estimate of error of 0.082 percent protein when 30 samples were compared with the acid orange 12 dye binding method. Milk was solubilized in 95-105 volumes of acetic acid using the Technicon Auto Analyzer II and measured for absorbance at 274 nanometers. No deviation from the standard method due to mastitis and varying milk fat concentration was observed. A theoretical model indicated a possible standard estimate of error 0.059 percent protein due to inter- and intra-breed variation in milk …

Evaluation Of A Vapor Pressure Osmometer For Determination Of Added Water In Milk, Kietipong Pensiripun

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A Wescor Vapor Pressure Osmometer measured the osmolality of a solution by sensing the vapor pressure above the solution in a closed chamber. The instrument sensing element comprised a precision thermocouple which measured the dew point temperature depression, a function of the water vapor pressure in the chamber. It used approximately 5-7 microliter samples to saturate a 0.64 cm filter paper disc. The instrument fixed a milliosmolal digital reading and signaled test completion in 110 seconds. The instrument weighed approximately 3. 62 kilograms, was 26. 7 x 24. 1 x 10. 2 cms in size and had a range of …

Manufacture Of Cottage Cheese Utilizing A Ph-Controlled, Whey-Based Lactic Culture, Yen-Luon Chen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Eleven strains of lactic cultures were used to determine their effectiveness in different bulk culture media for the manufacture of Cottage cheese. The acid phosphate-treated whey-based medium (APWM) made from Cottage cheese whey was found to be as effective as sweet phosphate-treated whey-based medium (PWM) made from Swiss cheese whey in supporting the development of lactic cultures. The relative activity of cultures in APWM with pH control was higher than phage inhibitory medium and nonfat dry milk without pH control. APWM was used successfully in the manufacture of Cottage cheese. Greater reliability and shorter cutting time resulted, and the product …

Comparison Of Compatibility Of Streptococcus Starters In Reconstituted Nonfat Dry Milk And A Whey-Based Bacteriophage Inhibitory Medium, Clinton K. Searle

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Compatibility of mixed cultures of Streptococcus lactis and Streptococcus cremoris were studied by the phage tracer technique in 10% nonfat dry milk and a whey-based phage inhibitory medium. Methods of membrane dialysis and differential enumeration were tried and abandoned. Dominance occurred in nonfat dry milk and in the whey-based medium during a continuous fermentation period within a pH range 6.8 to 5.2. The dominance pattern of two-strain combinations in 10% nonfat dry milk was different from that in the whey-based media. Dominance varied from one strain to another in no consistent sequence in some combinations. Dominance patterns of combinations were …

A Five-Year Follow-Up Study: Relationship Of The High Pufa Diet Used In Original Study Of Middle-Aged Adults To Present Dietary Choices, Rate Of Erythrocyte Hemolysis And Serum Cholesterol And Triglyceride Values, Jeanette Parsons Egan

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study was a follow-up of the Christiansen study which was completed in 1967. Dr. Christiansen's 26 subjects ranged in age from 33 to 60 years. Ten were designated as controls and the other 16 were placed on a high polyunsaturated fatty acid (PUFA) diet for a period of 26 weeks.

The purpose of doing a follow-up was to determine what effect the study had on present dietary patterns, serum lipid levels and rate of erythrocyte hemolysis.

Eighteen of the original subjects participated in this study. Of these 18, nine were from the control group and nine were from the …

Evaluation, Assay, Distribution, And Survey Of Staphylococcus Aureus Thermonuclease In Milk And Cheese Products, Gene Leong Hong

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The metachromatic agar-diffusion test of Lachica, Hoeprich, and Genigeorgis (1971) was modified by adding 17 ml of the agar medium to a 100 by 15 mm plastic petri dish, using 5 µl samples and 3 mm wells. The test detected 0.5 ng/ml of thermonuclease in 3 hr at 37 C. This was equivalent to 10⁶ to 10⁷ cells/ml of Staphylococcus aureus strains 196 E, 14458, and 19095 grown in Brain Heart Infusion (BHI) broth. The test sensitivity was decreased ten fold in raw and pasteurized milk.

One-half gram of cheese was dissolved in 4.5 ml of 0.1 M …

Applicability Of An Electronic Semiautomatic Somatic Cell Counter To Dairy Herd Improvement Milk Sample Testing, Nianwei Wang

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Technicon OSCC II was evaluated for application in dairy herd improvement central laboratories. Dilution using a Fisher Autodiluter made sample preparation for assay less time consuming and more convenient and resulted in the same accuracy as with the manual syringe technique.

Sample storage and the presence of a potassium dichromate preservative tablet had little effect on somatic cell count when tested within two days at room temperatures (20-23 C) or within four days at refrigeration temperatures (4-7 C). The preservative tablet caused an average increase of 14,000 cells/ml. The average cell count dropped 26 percent following two days at …

The Effects Of Gamma Irradiation, Color Mutation And Various Subatmospheric Pressures On The Growth And Patulin Production By Penicillium Expansum And Penicillium Patulum, Karl B. Adams

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

To assess the effects of gamma radiation at low doses, spores of Penicillium expansum NRRL 971 and Penicillium patulum NRRL 989 were exposed to doses of 0, 50, 100, 150, and 200 krads. The amount of patulin for each culture was quantitatively determined and growth at each dose was evaluated. The results showed a 31% increase in the amount of patulin synthesis after a dose of 150 krads for Penicillium expansum. At 200 krads, both fungi showed low levels of patulin production and inhibited growth.

Eight color mutants of P. expansum and eight color mutants of P. patulum were produced …

Anthocyanins Of Fresh And Stored Freeze-Dried Sour Cherries In Compressed Form, Suwan Potewiratananond

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Anthocyanin pigments of sour cherry (prunus cerasus L., cultivar Montmorency) fruit were studied by spectrophotometry, paper and two-dimensional thin layer chromatography and disc electrophoretic method. Mature and wholesome fresh sour cherries and freeze-dried compressed sour cherries stored at 70 F and 100 F for 6 months were used.

A total of seven anthocyanin pigments were observed in both paper and thin layer chromatograms of the fresh and freeze-dried compressed samples stored for O month whereas the freeze-dried compressed samples stored at 70 F and 100 F for 6 months showed the retention of three to six pigments. All of …

Breeding Ecology Of The Ferruginous Hawk In Northern Utah And Southern Idaho, Richard P. Howard

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Forty-three and 54 Ferruginous hawk (Buteo regalis) pairs were found occupying territories in northern Utah and southeastern Idaho during 1972 and 1973, respectively. Of these 38 and 27 nesting pairs laid eggs. Nesting success was 77.1 percent in 1972 and 74.6 percent in 1973. for successful nests, an average of 2.9 and 2.6 young hatched and 2.7 and 2.3 young fledged during the respective years. This population is reproductively comparable to others in Utah and Colorado. Analysis of prey items collected from the nests indicated that black-tailed jack-rabbits (Lepus californicus) constitute 86 percent of the biomass …

A Comparison Of Community College Students' Achievement And Attitude Changes In A Lecture-Only, Lecture-Laboratory, Lecture-Recitation Approach To General Education Biological Science Courses, Donald H. Dickinson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

student achievement and attitude changes toward science resulting from three different approaches used in teaching introductory general education biology at Diablo Valley Community College in Pleasant Hill, California, were compared. The three teaching approaches used were the lecture-only, lecture - laboratory and lecture-recitation.

The sample was composed of 129 students enrolled in Biology 101 and 102 at Diablo Valley Community College during fall semester 1974-75. Forty-three students comprised the control group taught by the lecture-only method. Forty-three students comprised the experimental group taught by the lecture-laboratory method. Forty-three students comprised a second experimental group taught by the lecture-recitation method.

Student …

The Influence Of Climate On Biomass And Mineralomass Of A Crested Wheatgrass Community In Northern Utah, Randall S. Shinn

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Aboveground biomass, litter biomass and root biomass of a crested wheatrgrass (Agropyron desertorum [Fisch.] Schult.) dominated community were inventoried in the fall of 1971, 1972, and 1973. In addition, energy, nitrogen, fats and ash determinations were made on the materials collected in 1972 and 1973.

The sampling methods used generated data sufficiently precise to detect significant differences (α = .10) among biomass components among years. The chemical contents of the components were similar in the fall of 1972 and the fall of 1973 despite the large differences in growing season precipitation.

A simple linear regression formula was generated from …

Comparisons Of Draw-A-Child Test Among Preschool Children, Margaret Prather Ezell

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

McCarthy's Draw-A-Child test was administered to 20 lower class and 20 middle class four-year-old children matched for age and sex. The purpose of the test was to find if socioeconomic class and sex differences effected the child's ability to draw a same sex figure. Analysis of results supported the theory that girls do better than boys. Analysis of socioeconomic differences suggests that lower-class children do not have the ability to draw as well as middle class children but the difference is not significant at the .05 level. It was concluded that the McCarthy Draw-A-Child test measures the general drawing abilities …

Patrick Edward Connor And The Military District Of Utah: Civil War Military Operations In Utah And Nevada, 1862-1865, Max Reynolds Mccarthy

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Troops, requested by the federal government for the security during the Civil War of the overland mail, telegraph, and emigrant routes, were provided by California for those portions of the routes which crossed the territories of Utah and Nevada. A force, never exceeding 1,200 in strength, commanded by Patrick Edward Connor, was assigned a geographic responsibility, the Military District of Utah.

Connor's California Volunteers established principal troop locations at Fort Churchill and Fort Ruby in Nevada, and at Camp Douglas and Fort Bridger in Utah Territory during mid-1862. Major actions were conducted against the Indians at the battle of Bear …

An Analysis Of Junior Livestock Shows In Utah, Mark Jay Bingham

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this paper is to discover any trend developing in youth participation in junior livestock shows in Utah and to identify the factors which affect youth participation. Junior livestock show records and 4-H enrollment figures from Cache and Box Elder Counties and the State of Utah, were studied to obtain necessary statistical information. A survey was constructed and issued to former and present 4-H members. Economic theory was employed in order to compare the survey data and participation statistics. The paper is divided into three major parts: similarities and differences between the Cache and Box Elder County Fair …

An Interregional Competition Study Of Utah Agriculture Using The Linear Programming Technique, Douglas Lee Andersen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purposes of this paper were to inventory the available agricultural production resources in Utah, to determine how those resources could be allocated most efficiently, and to provide information to aid the crop and livestock producing sectors in Utah in making informed production and marketing decisions.

Utah was divided into eight agricultural production and product consumption regions and the rest of the country was regionalized into product supply and market areas. Input and output coefficients, production costs, and market prices for the major Utah crop and livestock production enterprises and their products were developed. A linear program was then used …

A Comparison Of Economic, Demographic And Social Characteristics Of Migrants And Nonmigrants Of A Given Age Cohort Of Graduating Seniors Of Star Valley High School, 1946, 1947, Douglas D. Anderson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The hypothesis that migration from rural areas of declining population is selective of young, well-educated, achievement-oriented persons was tested on a cohort of graduating seniors from Star Valley (Wyoming) High School.

The 132 living members of the senior classes of 1946 and 1947 served as the population of study. The cohort approach was used to control such variables as age, high school education, rural area of origin and socio- cultural background.

Members of the population were located in their current places of residence through a number of tracking methods including checking high school reunion lists, contacting relatives, high school officials, …

Experimental Avian Botulism Studies On Sewage Oxidation Ponds In Utah, Daniel W. Moulton

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The objective of this study was to field-test the "microenvironment concept" of avian botulism epizootiology. The "microenvironment concept" hypothesizes that aquatic invertebrate carcasses may serve both as a substrate for toxin production by Clostridium botulinum type C in nature and as a vehicle for toxin transmission to waterbirds. This concept has become the generally accepted, but inadequately tested, working hypothesis of type C botulism epizootiology.

This study attempted to experimentally induce type C botulism in sentinel flocks of mallard ducks (Anas platyrhynchos) and American coots (Fulica americana) on sewage oxidation ponds in northern Utah. The three …

Projections For School Population And Teacher Demand In The State Of Utah For The Period 1970-200, Michael V. Macfarlane

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study is to study future trends in student enrollment, according to age, sex, grades, and school levels, for different geographic areas, and teacher demand for the elementary and secondary levels of school in Utah from 1970 to the year 2000. For the secondary level information is also given for student enrollment according to different subject areas and the future demand of teachers for these subject areas. Projections were prepared for single calendar years from 1970 to the year 2000. The projections for the school children were based on total population projections for the state, prepared at …

Junior High School Curriculum Development For The Utah Model For Career Guidance K-12, R. Russel Whitaker

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The study was conducted to develop a process by which teachers and counselors could initiate implement and evaluate career guidance activities in regular junior high school classrooms.

The problem. Junior high school teachers in Utah were not participating with counselors in providing career guidance activities for students.

Purpose. To conduct a pilot program in career guidance in which teachers and counselors at the junior high school level could create student activities which are applicable in the classroom from a pre-designed career guidance model.

Objectives. 1. To develop career guidance behavioral objectives and learning activities applicable to teaching …

Economics Of Land Use Planning: A Case Study Of Annexation In Heber Valley, Utah, Lyle C. Summers

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Some theories and methodologies applicable to land use planning problems were reviewed along with the history of land use and land use legislation in the United States and Utah. This review served to point out that federal land use policy is moving away from the incentive approach to controlling land use and toward a more mandatory approach aimed at giving increased emphasis to environmental quality and less to economic efficiency.

A model for conceptualizing and analyzing annexation problems was developed and applied to a problem in Heber City, Wasatch County, Utah. The analysis demonstrated that annexation is feasible by showing …

Determining A Crop Production Function For Corn As Influenced By Irrigation And Salinity Levels, Timothy E. Sullivan

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Production functions were generated for dry matter and grain yields of corn, A continuous variable plot design replicated four times was established in the spring of 1974 in Vernal, Utah. Each replication included ten salt treatments and twenty irrigation levels. The salt treatments resulted in an average root zone salinity ranging from 2 . 7 to 14.9 mmhos/cm. Irrigation levels ranged from 4.2 to 45.0cm of water applied. Dry matter (Kg/ha) yield showed an 83 percent reduction over the range of salt applied and a 52 percent reduction over the range of water applied. Grain yield declined 96 and 64 …

Attitudes Of Male Students And Their Parents Toward Physical Education At Logan Junior High School, Logan, Utah, Paul E. Stover

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The opinions of male students at Logan Junior High School and their parents were analyzed to determine attitudes toward physical education and the existing physical education program at the school. The data was obtained by the use of a questionnaire given to 458 boys and their parents.

Students of all three grades and the parents of all three classes indicated a positive attitude toward physical education and also toward the existing physical education program at Logan Junior High School. Ninth-graders showed the most favorable attitude of the student groups toward physical education. Parents of eighth-graders were the strongest supporters from …

An Evaluation Of The Success Factors In Two Utah Secondary Vocational Programs, Allan B. Oleole

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this paper is to formulate an evaluative instrument that can be used to interpret the follow-up data collected by the Utah State Board of Education on the vocational programs in the secondary schools of Utah. Evaluative instruments that were developed by private and state institutions were used as references for formulating the evaluative instrument used in this study. The paper also identifies the factors that can make a vocational program successful. This was accomplished by identifying all Utah high schools that have a consistently high rate of vocational success and then determining if the programs in these …

A Statistical Analysis Of Apprentice Program Dropouts And Completers In Utah: 1969-1974, Mark Douglas Randle

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study is to examine a sample of former Utah apprentices who either completed or dropped out of a registered apprenticeship program during the five-year period from 1969 to 1974. Comparisons were made between the dropouts and completers in order to determine how the two groups differed and what factors influenced their decisions to complete or cancel their indentures.

Significant differences were found between the two groups with respect to their opinions of the training they received as apprentices. Especially significant differences were seen between the dropouts; and completers' responses to the questions related to their on-the-job …

The Effect Of Time And Stress On The Heart Rate-Oxygen Consumption Relationship Of Uinta Ground Squirrels, Thomas E. Oldfield

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Uinta ground squirrels (Spermophilus armatus) were instrumented with ECG radio-transmitters. Heart rate and oxygen consumption were monitored for one hour at ambient temperatures above, within and below the thermoneutral zone. These measures were made at predetermined intervals throughout the active season of squirrels to determine if the heart rate-oxygen consumption relationship was a stable linear regression within and between squirrels during this period. Heart rate and oxygen consumption were also monitored for squirrels exposed to artificial and natural stressors. These squirrels were then released in an outdoor enclosure. Heart rate and behavior of animals were monitored simultaneously during …

An Analytical Study Of Word Processing In Selected Administrative Offices At Utah State University, Lynnette T. Nielson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to analyze the word processing procedures in the offices of the President and Provost at Utah State University. Seven secretaries participated in the survey by completing a questionnaire and keeping a record of all typing and nontyping tasks performed during two nonconsecutive weeks.

A combined total of 9035 lines (average 12 words per line) of typing was completed by all workers. Ninety-nine percent of the typing was classified as text in format and originated in one of several ways including: copy type, shorthand, revision, self composition, machine dictation, and longhand.

Recommendations based on the …

Effect Of Diet Levels Of Leucine, Isoleucine And Valine On Chick Growth Rate, Naiyana Nakhata

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Chick feeding tests were conducted to study the effects of dietary imbalances among the three branched chain amino acids on growth rate. All diets fed in these tests contained about 18% protein. The indispensable amino acids (IAA) were found in two of the diets fed in the proportions found by Dobson et al. (1964) to be well balanced. One of the diets had all IAA at 85% of these balanced levels while the other had them all at 125% of these levels. The tests involved reducing the isoleucine, leucine and valine levels in the high IAA diet to the low …

Development And Validation Of A Waiver Test For The Math Content Courses Required Of Elementary Education Majors At Utah State University, Marvin Nelson Tolman

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Purpose and Procedures

The purpose of this paper was to construct and validate an instrument which could effectively identify students enrolled in the elementary teacher training program at Utah State University whose mathematical competency equals or exceeds the standard for completion of the required math content courses prior to taking those courses. It was the hope of the writer that such students would be allowed to waive those courses and substitute courses representing areas of greater need for the individual student.

Care was taken in the construction and validation of the instrument to assure content validity with college-level texts designed …