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Effects Of X-Ray Induced Achlorhdria On The Utilization Of Dietary Calcium And Iron From Different Salts By Rats, Reid Scott Holbrook

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Dietary calcium has been classified as one of the minerals frequently limiting in the American diet (FAO, 1962) . Bone demineralization has been observed as a result of calcium deficient diets (Salomon et al., 1972), partial gastrectomies (Eddy, 1971) and inadequate hormonal balance (Albright et al., 1948). Although bone demineralization, or osteoporosis, has been attributed to many factors, the interrelationship of gastric acidity and the utilization of dietary calcium may be a key to the etiology of osteoporosis.

Eighty weanling male albino rats were divided into eight groups. All animals had their stomachs exposed through a mid-line incision. Control rats …

Distribution Of Milk Clotting Enzymes Between Curd And Whey And Their Survival During Cheddar Cheese Manufacture, David G. Holmes

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A linear diffusion test in sedimentation tubes filled with caseinagar gel successfully measured milk clotting enzymes at concentrations of 10^-4 to 1 X 10^-l rennin units/ml with 95% accuracy. Diffusion rates were unaffected by diluting enzyme samples with whey, 3% NaCl, and water, The distribution of rennet, porcine pepsin, mucor pusillus var Lindt (MP) protease, and rennet-pepsin mixtures between curd and whey was determined on milk coagulated at pH 5.2, 6.0, 6.4, and 6.6. The procedure accounted for 100 + 7% of the added enzymes. The distribution of rennet was pH dependent with 31% and 72% in curd …

Biochemical And Physiological Studies On Phytotoxicity Of Selected Pesticides And Allergens During Seed Germination Of Some Food Crops, R. R. Dalvi

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Germination of mung bean, Phaseolus mungo L. , and wheat, Triticum aestivum L., seeds was used for bioassay to demonstrate the toxic effects of selected pesticides--menazon, disulfoton, and GS-14254-- and allergens-- alantolactone and usnic acid. The ability of gibberellic acid to counteract the toxic effects of these chemicals on germination and seedling growth was studied. Chemical composition of the treated and untreated seeds was made with special attention to starch and protein degradation. Effect of these toxicants on the synthesis of amylase, ATPase, and protease enzymes during germination was studied since these enzymes are synthesized de novo during germination. To …

Procedure For Measuring Residual Endothia Parasitica Protease In Curd And Whey From Freshly Coagulated Milk, Raman B. Patel

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Test procedures were developed for measuring the residual milk clotting activity of a protease produced by Endothia parasitica in curd and whey separated from freshly coagulated milk. A substrate was prepared by reconstituting 6 g low heat nonfat dry milk in 500 ml buffer containing 50 ml 0.5M cacodylic acid, 50 ml 0.2M CaCl₂ , 30 ml 0.2M triethanolamine and 370 ml double distilled water. The substrate was stored at 2 to 4 C for 20 hours before use. Two milliliters of whey or supernatant from centrifuged curd-water slurries were inoculated into 25 ml of substrate at 30 C …

Production And Quality Evaluation Of Compressed Freeze-Dehydrated Sour Cherries And Their Pies, Chareonsri Srisangnam

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

High quality, mature sour cherries (Prunus cerasus L., cultivar Montmorency) were freeze-dehydrated, conditioned with one thousand part per million of sulfur dioxide solution spray followed by dry heat at 200 F for 1 minute and compressed with a pressure of 400 pounds per square inch. The samples were vacuum sealed in cans and stored at 100 F and 70 F for 6 months. The samples were analyzed every 2 months for compression characteristics, changes of color, acidity, anthocyanins, and ascorbic acid. Organoleptic evaluations were made for flavor, texture, and appearance of the rehydrated products prepared as pies.

The results …

Physiological Responses In Initial Psychological Interviews, Robert R. Perkinson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to determine the physiological responses of subjects to an initial psychological interview, and to study the effect of physical proximity and touch on these responses. Heart rate and total skin conductance variability were the responses monitored. To assess the subjects' like or dislike of the psychologist interviewer, a measure of interpersonal attraction, the Interpersonal Judgment Scale, was employed. The California Psychological Inventory was utilized to investigate possible personality correlates with the physiological responses.

Sixty females, between the ages of 18 and 28, responded to the California Psychological Inventory and were then connected to the …

The Use Of Token Reinforcement To Facilitate A Therapeutic Style Of Verbal Interaction In Groups Of Psychiatric Patients, Henry G. Martin

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study evaluated the use of a token, operant conditioning technique as a treatment procedure in a group setting with chronic, hospitalized, psychiatric patients. Fifteen patients were randomly assigned to two experimental groups and to one control group; each group included five patients. The two experimental groups received tokens during phases of contingent reinforcement for "Therapeutic Responses" and under a yoked-control phase of non-contingent token reinforcement; the sequence of these phases was the major difference between the two experimental groups. The control group met under conditions of no tokens, and the frequency of "Therapeutic Responses" was recorded on those subjects. …

A Comparison Of The Effects Of A Growth Group And A Behavior Change Group On The Inner-Directedness Of College Students, Larry R. Mccullough

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The primary purpose of this study was to compare the relative effectiveness of two group counseling methods, a self-directed behavior change group and an experiential growth group, for increasing inner-directedness as measured by Shostrom's Personal Orientation Inventory, in college students who were differentiated, on the basis of a pre-treatment measure of inner-directedness, into internals and externals. A second goal was to compare the overall outcome of each method with a no-treatment control group.

Pretest-posttest gain scores on the "I" scale of the Personal Orientation Inventory were obtained for a sample of 72 college students. The data collected were used to …

The Effects Of Awareness On Generalization And Incubation, Edward R. Lyon

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study is to demonstrate the effects of awareness on experimentally induced anxiety. Forty college undergraduates were conditioned with a mild electric shock as the UCS (unconditioned stimulus) and a tone a s the CS (conditioned stimulus). After conditioning, the experimental group was taught to discriminate between the CS and six other tones which were both higher and lower in frequency than the CS. The control group was not given these learning trials. After learning to discriminate the tones, the experimental subjects had a higher GSR (Galvanic Skin Response) to the seven tones as compared to the …

The Development Of Career Exploration Work Simulation Units For Career Education In Grades Seven Through Nine, Gerald Eldon Manwill

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to (1) select six vocational areas for Career Exploration Work Simulation Units development, hereafter referred to as CEWSU (2) design mock-up sites for CEWSU construction, (3) specify materials to be used in the mock-up, (4) describe tasks to be completed in the simulation exercises, (5) construct six CEWSU simulation units for placement in junior high school career education programs, (6) gather materials and tools to be used in each of the six CEWSU, (7) develop and program cassette tape instructions and flip charts for the CEWSU, (8) field test the CEWSU, (9) revise the …

Prescorbutic Vitamin C Deficiency And Escape, Avoidance, And Extinction Behavior In Guinea Pigs (Cavia Porcellus), Susan Goodwin

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Few studies in the area of psychodietetics have concentrated upon the relationship between a single dietary nutrient and behavior. However, some vitamins have been shown to be particularly important to central nervous system activity. Among these is Vitamin C (ascorbic acid).

Two experiments were done to determine the effects of ascorbic acid deficient diets on a learning task in which guinea pigs were subjects. Learning was defined as acquisition and extinction of shock-escape and shock-avoidance behavior.

In Experiment I, twelve adult guinea pigs were fed diets containing two different deficient amounts of ascorbic acid for six weeks. They were then …

An Investigation Of High And Low Self-Disclosers' Scores On The Holtzman Inkblot Technique, Richard L. Atkins

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to see if there are any differences in how high and low self-disclosers score on the Holtzman Inkblot Technique. The study employed a causal-comparative design for descriptive purposes.

Two hundred four college students were given a self-disclosure inventory, and high and low self-disclosers were randomly selected from the highest and lowest interquartile ranges. The fifty subjects were administered the group version of the Holtzman Inkblot Technique.

The results indicated that female high self-disclosers scored significantly higher on Barrier and significantly lower on Hostility than female low self-disclosers.

Reported Attitude And Behavior Change As A Result Of Participation In Parent Training Groups, Lorene Allen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study investigated the value of participation in a Dreikurs Parent Training group and in a Combination Dreikurs and Parent Effectiveness Training group. The value of participation was measured in terms of three variables: (1) problem behaviors of the child as reported by the parents on a Checklist of Child Problem Behaviors; (2) problems of parents as reported by the parents, themselves, on a Checklist of Parent Problems; and (3) parental attitudes as measured by Hereford's Parent Attitude Survey.

Parents, who volunteered to be included in parent training groups, were assigned to two treatment groups and one control group. All …

The Production And Prevention Of Stomach Ulcers In Rodents, Eric H. Rudrud

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Rats given L-Ascorbic Acid in their drinking water prior to and during starvation did not develop severe ulceration in the glandular portion of their stomachs. Control rats which were either nontreated or given deactivated L-Ascorbic Acid developed severe stomach pathology on the starvation regimen.

The present study was based on the finding that food deprivation results in severe rumenal ulceration in rats. Given that L-AA is essential in maintaining tissue integrity and that ulcers are examples of tissue degeneration, the L-AA in large amounts could retard, or prevent, the formation of starvation induced stomach ulcers in rats.

The results show …

A Comparative Study Of Gpa Predictability Using The Japq And The Svib, Kathleen A. Peterson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this thesis was to compare the results from two vocational interest blanks, the Job Activity Preference Questionnaire (JAPQ) and the Strong Vocational Interest Blank (SVIB) in the prediction of grade point averages (GPA) for university students. An investigation was also made to determine if the variable vocational interest would contribute to a multiple r composed of American College Test (ACT) scores and GPA.

One hundred students were administered both instruments and predictions made of their GPA's after the completion of two quarters of classroom study and after the completion of the most recent quarter of classroom study. …

Influence Of Soil Water Potential And Environment On The Internal Water Status Of Grasses, Ray W. Brown

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The water relations of two grass species, smooth brome (Bromus inermis Leyss.) and intermediate wheatgrass (Agropyron intermedium (Host) Beauv.), were studied under a range of environmental conditions in a growth chamber. The environmental conditions included three temperature regimes (day/night temperatures of 15/10, 20/15, and 25/20 degrees centigrade), and three vapor pressure deficits within each temperature regime (6.2, 8.8, and 11.4 millimeters of mercury). Short wave radiation was maintained at 0.5 calories per square centimeter per minute with a 14 hour photoperiod, and wind speed was constant at 45 centimeters per second.

Six plants of each species were studied …

Characteristics And Genesis Of The Parleys And Mendon Soils Series In Northern Utah, Khalid I. Al-Amin

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The study was designed to test the genetic theory of soil development of two soils derived from different geological material, but developed under conditions of similar climate, topography, biological activity, and age. An attempt was made to relate the soils characteristics to their present classification. Parleys and Mendon series which developed from Bonneville and Salt Lake Formation, respectively, were selected for that purpose. Along the east side of Cache valley, two pedons representing each of the studied series were selected to have similar soil formers except for their parent material.

Evidently, these studied soils have been developed from different heterogenous …

A Study Concerning Sources Of Information And Knowledge About Fluoride In Logan, Milford, And Helper, Utah, Marilyn Lorraine Geddes

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A considerable amount of research has been conducted concerning the characteristics of people who are in favor of fluoridation. However, there is little information available as to what the electorate really knows about fluoride when they are forced to vote on this scientific issue.

Thus, the objectives of this study were to determine the general public's level of knowledge about fluoride, to discover what sources of information have been the greatest influence on their opinion and knowledge about fluoride, and to estimate the level of participation of dentists, general practitioners, pediatricians, and gynecologists in the education of Utahns about the …

Some Feasible Long-Run Policy Alternatives For The Agricultural Sector In Bolivia, Franklin Bruce Brown

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this paper is to construct a model that will aid in analyzing present agricultural policies along with feasible alternatives. Recently completed studies of production costs, crop prices and yields, and experimental technologies were used as sources of data. A linear programming model was used to project suggested investment for agriculture in land, labor, and capital inputs in order to achieve specific crop production targets. The paper is divided into four major parts: the theory of policy-making, the model description, the application of the model to Boliva, and the results and conclusions, in that order.

The Phenology And Control Of Dyers Woad (Isatis Tinctoria) In Northern Utah, William A. Varga

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this thesis is to describe dyers woad and to establish v means for control of the weed in northern Utah. Logan was chosen for studying germination of the weed, and interaction of dyers woad and alfalfa stands. Collinston was selected for screening trials of herbicides for the control of dyers woad. The thesis contains information on the phenology of dyers woad and suggestions for control of the weed.

Seasonal Changes Of Peach Flower Buds At The Ultrastructural Level, Yeh Feng

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study was conducted to gain a better understanding of the seasonal changes of Gleason Elberta peach flower buds at the cellular level. Peach buds were obtained from the Howell Experiment Station in Ogden, Utah. Samples were collected at weekly intervals from October 25th, 1971 to March 29th, 1972. When a killing frost precluded further sampling, the buds were preserved by standard electron microscopic techniques. Thin sections (500 to 700 A) of the cells around the ovarious cavity were examined with a Zeiss EM-9S-2A electron microscope.

From October 25th, 1971 to January 3rd, 1972, more heterochromatin than euchromatin was in …

Meiotic And Mitotic Chromosomes Of Fritillaria Atropurpurea Nutt., John Keith Archibald

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this paper is to provide information concerning the number, structure, and behavior of chromosomes in the plant species Fritillaria atropurpurea. The material used for this investigation included both floral buds and root-tips from actively growing naturally occurring plants collected from populations in both Utah and Nevada, and root-tips from seed germinated in the greenhouse. The results obtained include a karyotype analysis of mitotic chromosomes, a discussion of meiosis, a discussion of B-chromosomes, and a series of photographs depicting the stages of mitosis and meiosis in this species.

Fritillaria atropurpurea has a diploid chromosome number of 24, …

A Theoretical Proton-Proton Pair Production Cross-Section Calculation, Jay W. Phippen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The calculation of both electron-pair and muon-pair production cross-sections was made using Feynman's quantum electrodynamics. Pseudo-scaler coupling was used between the nucleons and vector coupling was used between the photon and the Fermions. The protons were considered as Dirac particles and radiative corrections were omitted.

Eight fourth-order Feynman-Dyson diagrams were used. The subsequent sixty-four TRACES were reduced to seven basic topologically different TRACES. From the seven basic TRACES, it was possible to generate the sixty-four TRACES by the proper permutations of the variables.

With the mathematics and the corresponding computer programs written down, data (energies and momenta which represent the …

A Study Of The Radiation Quality Under Plant Canopies In The Wave Range 0.4 To 2.5 Microns, Nolasco G. Baldazo

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The spectral distribution of the global radiation from 0.4 to 2.5 microns penetrating deciduous and coniferous canopies were measured during clear days between 10 a.m. and 2 p.m. using a double-quartz monochromator.

In the visible region (0.4 to 0.7 micron) the average relative spectral transmissions under both canopies are about one percent beginning at 0.4 micron and decreasing to about half a percent at 0.67 micron. There is only a small peak in the green (0.55 micron) transmission under deciduous stands while there is none under coniferous canopies. The slightly higher transmission in the blue (0.4 micron) is attributed to …

Nutrition Of Sheep Grazing Foothill Big Game Range In Spring, Kurt J. Kotter

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Sheep with esophageal fistulas were used to determine the daily intake, nutritive content and digestibility of forage at three periods and two stocking intensities during the spring of 1972 on a typical foothill range in northern Utah.

Heavy grazing under a season-long regime did not influence the concentrations of dietary chemical components when compared to moderate grazing; however, it did depress the digestibility of cellulose and organic matter. There was a significant decline in the dietary chemical components due to forage maturation. Digestibility of organic matter and cellulose were significantly higher in the early spring as compared to late spring. …

The Dynamics Of Root Growth And The Partitioning Of Photosynthates In Cool Desert Shrubs, Osvaldo Alberto Fernandez

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study addresses the nature of physiological and phenological evolutionary strategies of root growth dynamics and energy allocation followed by Atriplex confertifolia, Ceratoides lanata, and Artemisia tridentata growing in their natural cool desert environment.

Root observation chambers with inclined Plexiglass windows were installed in monospecific desert communities of Atriplex confertifolia, Ceratoides lanata and Artemisia tridentata. Soil temperature and water potential measurements taken immediately adjacent to the observation windows indicated a minimal disturbance was caused by the presence of these chambers. For the three species initiation of root growth was observed before initiation of shoot activity, furthermore, active root growth extended …

Comparison Of Protein, Forage, And Root Yield Data Of Five Pasture Mixtures As Influenced By Clipping, Irrigation, And Nitrogen Fertilization, Clair E. Blaser

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A study was made to compare the protein and forage yield and root dry weight data of five pasture mixtures as influenced by two clipping frequencies (28 and 35 day clipping intervals), three irrigation intervals (1 inch every 5 days, 2 inches every 10 days and 4 inches every 20 days) and four levels of nitrogen fertilization (0, 50, 100, and 200 pounds per acre). The study was conducted at the Greenville Farm, Logan, Utah. The farm has about 1 percent surface slope and is a well-drained Millville silt loam that occurs on an alluvial fan. It is high in …

Determination Of Crop Production Functions As Related To Soil Moisture And Nitrogen, James W. Bauder

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Soil moisture and nitrogen are often the primary controlling factors of crop production. Production functions are valuable in describing crop responses to such controlling factors. Such functions are also needed for determining the economic reliability of crop production.

Soil moisture and nitrogen fertilizer were maintained at various levels to determine the response of field corn to these controlling factors. A conventional split plot design, a continuous function experimental design, and a confined barrel plot design were used to obtain data for determining production functions.

The complete factorial, conventional split plot data was successfully used to generate reliable production functions in …

Air Pressures Over Reservoir, Canal, And Water Catchment Surfaces Exposed To Wind, Allen Ray Dedrick

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Surface air pressure differentials that occur over reservoirs, canals, and water-catchment aprons in high-wind conditions were determined by the use of models in a wind tunnel. Such information was needed concerning the magnitude and location of destructive wind forces on water barriers constructed of exposed flexible membrane liners. Rigid models, without a membrane, were used to measure airpressure differentials.

Air-pressure differentials were dependent on geometric configuration and were independent of viccous forces above the critical Reynolds number which was determined experimentally. The geometric factors studied with respect to reservoirs and canals included approach slope, approach slope length, leeward slope, and …

A History Of Water Resources Development In The Bear River Basin Of Utah, Idaho, And Wyoming, R. Scott Wrenn

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This paper examines the historical process of water resources development in the Bear River Basin and is based on the thesis that the attitudes of Bear River water users towards development reduce to a concern over the scarcity of water or the potential shortage of water. This concern has been a constant and primary focus of water resources development in the Bear River Basin even as water resources technology became increasingly more sophisticated and the legal and political consideration of water resource development became more complex. From the time of the original Mormon settlements in the Bear River Basin Water …