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Reproductive Success Of The White-Faced Ibis: The Effects Of Pesticides And Colony Characteristics, Benjamin B. Steele

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Reproductive success of white-faced ibis (Plegadis chihi) was measured in nine colonies on marshes in northern Utah during 1979. The effects of pesticides and characteristics of colonies and sub-colonies on reproductive success were examined.

DDE was present in all 80 eggs sampled and had a geometric mean concentration of 1.25 ppm. Shell thickness of 176 eggs was 4.3 percent below pre-1945 thickness. Shell thickness was weakly correlated with residues of DDT, DDE, Dieldrin, and heptachlor epoxide. Residues of these four pesticides were all correlated with each other. However, because of the stronger correlations between shell thickness and two …

Effects Of Ddt Upon The Hematology And Immunology Of The Goldfish (Carassius Auratus), Maurice G. Zeeman

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

DDT can cause hematological and immunological alterations in mammals and birds. Interference with normal hematological and immunological defense systems has been strongly linked to increased incidences of disease and tumors. Fish exposed to pesticides have been noted to be more susceptible to disease. This study examined DDT effects on goldfish hematological and immunological parameters.

Adult goldfish were kept in 250 liter aquaria at 25 ± 1° C. Fish were dosed intraperitoneally with p,p'-DDT in corn oil. Doses ranged from 0 to 500 mg/kg for acute (96 hour) hematology studies to 0 to 50 mg/kg for sub-acute hematology and immunology studies. …

Structure And Petrology Of Tertiary Volcanic Rocks Near Etna, Utah, Kent W. Smith

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Three volcanic domes and related volcanic rocks of Tertiary age are located near Etna, Utah, in Box Elder County. The domes follow a north-south trend and are fault controlled. Flow structure indicates a change from a less viscous, flow-forming lava which produced an exogenous dome to a more viscous lava which formed endogenous domes. Associated pyroclastic deposits are negligible. The volcanic rocks are composed of porphyritic rhyolite and rhyolitic vitrophyre having phenocrysts of quartz, sanidine, plagioclase and biotite with minor amounts of Fe-Ti oxides, hypersthene, allanite and calcic amphibole. Quartz and sanidine phenocrysts are generally embayed whereas plagioclase phenocrysts are …

Evaluation Of Multivariate Homogenous Arma Model, Lucy Chienhua Tseng

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this thesis is to study a restricted multivariate AFRMA model, called the Homogeneous Model. This model is defined as one in which each univariate component of the multivariate model is of the same order in p and q as it is in the multivariate model.

From a mathematical respect, multivariate ARMA model is homogeneous if, and only if, its coefficient matrices are diagonal. From a physical respect, the present observation of a phenomenon can be modeled only by its own past observation and its present and past "errors."

The estimation procedures are developed based on maximum likelihood …

Vector Optimization Decision Convergence Algorithm (Vodca), Thomas Ward Morgan

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Many professions occasionally involve the selection of an alternative from among many problem solutions which have impacts in multiple-interest areas; however, due to the very nature of his work, the practicing engineer, regardless of specialty, is unavoidably engaged in this selection process. The emergence of national concern for environmental and social consequences of technical enterprises, as reflected through legislative action, has accentuated the need for multicriteria design methodologies in some areas of engineering (i.e., automotive). Consequently, interest in the development of pragmatic and theoretically sound approaches to multi-impact design situations has been keen. Any approach to multicriteria design/decision problems involves …

Exact Analysis Of Variance With Unequal Variances, Noriaki Yanagi

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this paper was to present the exact analysis of variance with unequal variances. Bishop presented the new procedure for the r-way layout ANOVA. In this paper, one and two way layout ANOVA were explained and Bishop's method and Standard method were compared by using a Monte Carlo method.

Determining Initial Values For Stiff Systems With Incomplete Initial Data, Yech-Kuang Ning

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Stiff differential equations frequently arise in physical problems due to the existence of greatly differing time constants. One way of solving stiff differential equations is taking the step size very small, another way is using an A-stable or stiffly stable implicit method. The purpose of this thesis is to discuss the method of determining initial values for stiff systems. The algorithm was motivated by a problem from ionospheric physics in which some of the initial values are unknown. If we give those unknown initial values an arbitrary number and integrated with those values, we have an initial transient. However, if …

Extreme Value Distribution In Hydrology, Bill (Tzeng-Lwen) Chen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The problems encountered when empirical fit is used as the sole criterion for choosing a distribution to represent annual flood data are discussed. Some theoretical direction is needed for this choice. Extreme value theory is established as a viable tool for analyzing annual flood data. Extreme value distributions have been used in previous analyses of flood data. However, no systematic investigation of the theory has previously been applied. Properties of the extreme value distributions are examined. The most appropriate distribution for flood data has not previously been fit to such data. The fit of the chosen extreme value distribution compares …

The Development Of Methodology For Gas Liquid Chromatographic Determination Of Plant Sugars In Maturing Reed Canarygrass, Allan Scott Bittner

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study was concerned with development of chromatographic methods suitable for determination of plant sugars. The resultant methodology was applied to the comprehensive study of plant carbohydrates as they vary during plant growth. Plant cell walls were isolated with boiling water followed by delignification with acid chlorite. The soluble portions were hydrolyzed with 2N sulfuric acid and the total sugars and individual monosaccharides were quantified using gas chromatography and colorimetry. The insoluble residues were hydrolyzed with 72% sulfuric acid followed by dilution with water to 2N and further hydrolysis. The effects of duration of delignification and acid hydrolysis were interpreted …

Inhibition Of Synaptosomal Biogenic Amine Transport By A Diverse Group Of Neurotoxic Chemicals, William M. Bracken

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Synaptosomal membrane functions were monitored, after in vitro exposure to select environmental pollutants, in synaptosomal preparations originating from rat cerebral cortices. The uptake of NE and 5HT into the synaptosomes was monitored as was the K⁺-dependent phosphate activity of the membrane. CH₃HgCl, Hg(NO₃)₂, CdCl₂, diisopropylfluorophosphate (DFP), paraoxon, acrylamide and Kepone were the test chemicals whose effects were studied.

CH₃HgCl, Hg(NO₃)₂ and Kepone had the greatest inhibitory effects on NE and 5HT uptake. The concentrations producing 50 percent inhibition (IC₅₀) were 1.4 x 10 …

Leptophos Metabolism In The Rat: An In Vivo Study Of Oxidative Versus Conjugative Modes Of Metabolism, David Richard Hampson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The objectives of this research were to examine the metabolism in vivo of the pesticide leptophos in the rat under normal conditions and during inhibition of the mixed-function oxidases and during depletion of glutathione. Glutathione is a cofactor in the conjugation reactions of the glutathione-S-transferases. Both the mixed-function oxidase system and the glutathione-S-transferases have been shown to be important in the biotransformation of other organophosphate pesticides.

Urinary metabolites of leptophos were extracted, derivatized and subsequently analyzed by gas-liquid chromatography. The methods used to analyze for alkyl phosphonates were subject to several shortcomings and modifications of the original procedure were necessary. …

Effects Of Pesticides On Immune Competency: Influence Of Methyl Parathion And Carbofuran On Immunologic Responses To Salmonella Typhimurium Infection, Anna M. Fan

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Immunologic competence is correlated with resistance to infectious disease which may be affected by exposure to certain compounds. Methyl parathion (MP) and carbofuran (CF) have been reported to affect the development of active immunity in the rabbit and the present research was conducted to quantify the dosage relationships of these two pesticides to both host resistance and acquired resistance in the mouse.

Preliminary study was made on the virulence of Salmonella typhimurium in mice. Mortality rates among infected animals fed Purina Laboratory Chow diet providing 0.08, 0.7 3.0 mg MP/kg/day or 0.1, 0.6, 1.0 mg CF/kg/day along with untreated controls …

A Computer Simulation Study Of Blood Cholinesterase Inhibition In Parathion Treated Rats, Scott Christopher Hennes

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A computer simulation model of blood cholinesterase inhibition in rats resulting from a single oral or dermal dose of parathion was developed and tested. The model consists of a set of non-linear differential equations describing the absorption, distribution and metabolism of parathion and the kinetics of inhibition and reactivation of erythrocyte and plasma cholinesterase. The equations are numerically integrated to produce the time-course of each of the cholinesterase activities of the blood. The model was tested for validity by a comparison of the activities predicted by the model to values determined experimentally in male rats. The model successfully simulated plasma …

Oil And Iranian Development, Alireza Emami

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The main concern of this study was two-fold: (a) to compute the Iranian economy's long-run growth potential consistent with full-capacity utilization of the output and stocks with the existing current and capital account matrices; and (b) to simulate the impacts that changing petroleum export levels have on capital formation, employment, and income distribution.

The analysis proceeded by developing a closed dynamic interindustry model in order to compute the "turnpike" growth rate. The uniform or "turnpike" growth rate computed for the base current and capital account matrices was 1.7 percent per annum. This describes the long-run growth potential for Iran. Given …

The Effects Of Tri-O-Tolyl Phosphate (Totp) On The Immune System Of Mice, Craig R. Brinkerhoff

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

TOTP is a prevalent industrial and environmental contaminant which has been shown to be a neurotoxic agent. This study was undertaken to investigate the effects of this compound on the immune system. Several techniques were employed to test the humoral as well as cellular effects. Male Swiss Webster mice were administered by gastric gavage with three doses of TOTP (5, 50, and 500 mg/kg) and one dose TMTP (50 mg/kg) in corn oil once a week for 13 weeks. Control animals were given corn oil alone.

Lymphocyte transformation was determined on cultures of splenic cells obtained from animals sacrificed at …

Economic Impacts Of Public Grazing Reductions In The Livestock Industry With Emphasis On Utah, Deevon Bailey

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this paper was to determine the immediate impact of reductions in public grazing on livestock production in the United States. This was accomplished by the use of linear programming techniques. Different grazing reduction simulations were utilized to determine the short and long run effects of across-the-board reductions in public grazing.

The United States was divided into 13 regions. The 11 western states were considered as individual regions. Special emphasis was placed on the effects of grazing reduction on Utah. The availability and utilization of feed and livestock products during a "normal year", 1978, were considered in this …

Characteristics And Genesis Of Certain Soils In The Southern Foothills Of Central Alborz, Iran, Firouz Rooyani

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Characteristics and genesis of five pedons representing some of the soils of the central Alborz mountain northeast of Tehran were investigated. The present climate of the area is similar to the Mediterranean climate. The parent materials for the soils under study have apparently been derived from the Ecocene Alborz Green Beds (a thinly bedded light green mudstone), the Pliocene Hezardareh Formation (a poorly-cemented conglomerate) and Recent alluvium and colluvium. Pedons 2 and 4 are located at lower elevations (plain and river terraces) on 1 to 2 percent slopes. Pedons 3 and 5 are located at higher elevations (hills that surround …

Evaluation Of Six Strains Of Rainbow Trout (Salmo Gairdneri) Stocked As Fingerlings In Porcupine Reservoir, Utah, Mark Hudy

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Different strains of rainbow trout (Salmo gairdneri), Ten Sleep, Sand Creek, Beitey, Shepherd-of-the-Hills, New Zealand, Fish Lake-Desmet, Desmet, were compared for survival to the creel, growth and catchability after being stocked in a fluctuating 80 ha Utah reservoir. Fish were stocked in the spring and fall as fingerlings and monitored by creel censusing, gill netting and electrofishing. Fish were tagged with coded wire snout tags prior to stocking. An angler opinion survey was conducted to determine angler satisfaction with numbers and size of fish caught.

Regardless of strain, spring stocking was superior to fall stocking in survival to …

Treatment Of Usu Dairy Wastewaters By Lagoon Intermittent Sand Filtration, Eric M. Claus

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A study of the feasibility of lagoon-intermittent sand filter treatment of dairy wastewaters from the Utah State University dairy was performed from 1978 through 1980. The report also includes an analysis of alternative dairy wastewater treatment systems utilizing a computer model.

A simple and inexpensive method of dairy wastewater treatment is needed so that the small (50- 300 cows) dairy farmer can meet the 30 mg/ ~ of BODs federal effluent standard and still earn a profit. The influent to the USU dairy treatment system, the lagoon effluent and the filter effluent were sampled during the summers of 1978 and …

Landscape Architecture History: A Critical Review Of Its Curriculum And Teaching Methodology, Robert L. Marshall

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this thesis is to develop criteria for establishing an effective course in teaching history of landscape architecture. Believing that professors, students and practicing landscape architects all have justifiable concerns and comments as to the way history of landscape architecture should be taught, questionnaires were sent to each of these groups across the country. Based on the responses to the questionnaires, coupled with information gleaned from a review of literature and the author's personal teaching experiences, the course criteria is established.

The research showed that it is important that the instructor be able to select historic periods and …

Characteristics And Genesis Of Some Soils Of The Upper Terraces Of Lake Bonneville, Mohammad Ali Haji Mirsadeghi

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The genesis and characteristics of the Timpanogos, Hillfield, and Sterling soils and an unnamed Mollisol (soil formed on north-slope) on the east part of Cache Valley were studied in order to determine (1) why the soil morphology is not chronologically related to the geomorphic surface and (2) why different soils have developed on these surfaces, even though the soil forming factors appear similar.

The particle size distribution of the upper horizons of the Timpanogos, Hillfield, and unnamed Mollisol pedons are relatively similar. These soils developed from stratified deposits with granulimetric composition in which 75 to 90 percent of the grains …

An Evaluation Of Two Types Of Summer Home Economics Programs Conducted In Box Elder County, Utah, Kathryn Cannon Jensen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A follow-up study, involving students, parents, and teachers that participated in two types of summer home economics programs in Box Elder County during the summer of 1979, was conducted during August, 1979 to collect data relative to the following objectives: (1) to obtain demographic data as to age, sex, and participation in the program; (2) to obtain the subjects feelings about the program; and (3) to gather opinions and suggestions from the respondents about the programs.

Analysis of the data revealed (1) there were more students enrolled in the In-School program than the Home-Visit program. There were more females than …

The Unemployment And Reemployment Experiences Of Displaced Workers Resulting From The Shutdown Of Two Utah Mines: The Park City Ventures And The Burgin Mine, Richard A. Davidson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this paper is to study the unemployment and reemployment experiences of displaced workers. Two mines were shut down in 1978 in Utah: the Park City Ventures Mine located in Park City and the Burgin Mine located in Eureka. Data were collected from questionnaires mailed to all the displaced workers of both mines and from personal interviews conducted with mine officials, officials of formal job-search agencies, and union representatives.

The shutdown at Park City Ventures affected 350 workers, and the shutdown at the Burgin Mine affected 153. Both mines qualified for and were certified for Trade Readjustment Act …

Habitat Manipulation For The Reestablishment Of The Utah Prairie Dog In Capitol Reef National Park, Rodney L. Player

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Utah prairie dogs were transplanted onto the site of a former colony located on Jones Bench in the northwestern corner of Capitol Reef National Park. Shrubs on Jones Bench were significantly taller than those found on active colonies of Ut ah prairie dogs located nearby on the Awapa Plateau. Therefore, the Jones Bench site offered an opportunity to test the hypothesis that shrub height is a major inhibitory factor on occupation of sites by prairie dogs. Four sites of 5 ha each were delimited on Jones Bench prior to the transplanting o~ animals. Vegetation treatments were carried out on three …

Activities Of Domestic Sheep On Central Utah Ranges, J. Daniel Rodgers

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The range sheep industry, economically important to Utah and to the United States, produces needed food and fiber from much of the less productive land. Improved management will depend on more knowledge of the range ecosystem. Research to determine the time spent by sheep in activities of differing energy demands and to determine what factors affect sheep activity was completed on Utah ranges.

The research was conducted in central Utah on foothill range near Eureka and on mountain range near Scofield. Rambouillet sheep were loosely herded on the sagebrush-aspen areas on mountain range and were unherded on foothill range where …

A Study Of Utah High School Band Teacher's Perceptions Of Factors Affecting The Band Rehearsal Period, Robert Denton Coleman

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to determine if there were any differences between what Utah high school band teachers perceive as important skills, activities, behaviors, knowledge, and concepts in the context of the rehearsal and their assessment of the degree to which these items were applied during the rehearsal period.

A survey questionnaire listing twenty band rehearsal instructional items was used to obtain the data. Sixty-one percent of the sample responded to the survey. The sample included all high school band teachers in the state of Utah.

A correlation coefficient was computed between respondent's ratings of the validity of …

Geology, Characteristics, And Resource Potential Of The Low Temperature Geothermal System Near Midway, Wasatch County, Utah, James F. Kohler

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Recent awareness of the finite nature of fossil-fuel resources has resulted in an increased interest in alternate sources of energy such as geothermal. To evaluate the geothermal energy potential of the hot-springs system near Midway, Wasatch Co., Utah, consideration was given to heat flow, water chemistry, and structural controls.

Abnormal heat flow was indicated qualitatively by snow-melt patterns and quantitatively by heat-flow measurements that were obtained from two of four temperature-gradient wells drilled in the area. These measurements indicated that the area north of the town of Midway is characterized by heat flow equal to 321.75 mW/m², which …

Lactation And Weaning Weight Relationships In Hereford And Simmental-Hereford Cows In Southern Utah, William E. Zimmerman

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Lactation and weaning weight relationships were studied in 37 cows grazing Southern Utah irrigated pastures during the summer of 1979. The herd included 23 Hereford cows ranging in age from 2 to 12 years and 14 Simmental-Hereford half-blood cows aged 3 to 9 years. The suckling calves were sired by Hereford bulls.

The average daily milk yield of 6.16 kg was affected by the cow breed. Simmental-Hereford cows produced 7.11 kg of milk per day, while the Herefords produced 5.21 kg per day. Milk production declined with increased days in lactation. The decline was linear in the Simmental- Hereford cows …

Determination Of The Temperature Response Curves For Abscisic Acid And Its Derivatives In Economically Important Horticultural Crops, Jaleh Daie

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Part I

Four-week old tomato (Lycopersicon esculentum Mill.) seedlings were exposed to different constant temperatures of 15, 25, 35, or 45 C. To determine the effect of temperature on Abscisic Acid (ABA) young and old leaves were harvested at 0, 6, 12, 24, or 48 h and free, hydrolyzable and total ABA were measured using gas liquid chromatographic methods. Temperature had a significant effect on free, hydrolyzable and total ABA in both young and old leaves. Time had a significant effect as a cubic function on all ABA measurements in old leaves but in young leaves a significant effect …

Ultrastructural Localization Of Solanidine In Potato Tubers, Shau-Ron Han

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Solanine, the green substance in potato, Solanum tuberosum L., tubers, is a toxic glycoalkaloid that is a potential human health hazard. To control the formation of this glycoalkaloid a greater understanding of its site of synthesis is needed. Labelling of solanidine, a direct precursor in the biosynthesis of solanine, with digitonin may indirectly locate the site of solanine synthesis in tubers. A study using ultrastructural cytochemical techniques was initiated to explore this possibility.

Sprouted tips and peridermal complex (periderm and cortex) tissue were fixed three different ways: (1) glutaraldehyde only, (2) osmium tetroxide and glutaraldehyde, and (3) glutaraldehyde-osmium tetroxide-digitonin mixture. …