Digital Commons Network^™

The Structure Of Sonoran Desert Bird Communities: Effects Of Vegetation Structure And Precipitation, Stephen B. Vander Wall

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The structure of Sonoran Desert bird communities was studied along both a vegetation gradient (at Organ Pipe Cactus National Monument, Arizona) and a latitudinal gradient (from Burro Creek, Arizona to Sierra Libre, Sonora, Mexico). The vegetation gradient consisted of 4 sites which varied in vegetation structure from complex (large cactus-subtree dominated community) to simple (shrub dominated community). Along the vegetation gradient, bird species diversity, bird species richness and consuming biomass decreased with decreasing structural complexity of the vegetation. Bird species equitablility did not change significantly along the gradient. Using both principal component and cluster analyses on foraging behavior data plus …

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 …

An Analysis Of Heinrich Heine's Dramatic Works: "Almansor" And "William Ratcliff", Marianne Anderson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The mass of words written about the German poet and prose writer Heinrich Heine (1?97-1856) is intimidating. He is considered to be one of the most controversial and paradoxical authors of the Western literature, an enigmatic figure among German writers, and the only German writer between Goethe and Thomas Mann to achieve during his lifetime a reputation beyond the bounds of German-speaking countries. He has been termed "the pioneer of radical political literature, an eccentric poet." His works became a milestone of German thought.

Evaluation Of A Wescor Dew Point Microvoltmeter Model Hr 33t For Measuring Water Activity In Foods, Ranga N. Kidambi

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Wescor Dew Point Microvoltmeter, Model HR 33T, together with a Wescor C-52 sample chamber, was used to measure water activities between a_w 1.0 and a_w 0.60. Because of temperature gradient problems, the sample chamber was mounted in a styrofoam insulation box constructed so that the chamber could be opened and the sample replaced while it remained inside the closed insulation box. The standard psychrometric procedure was used for samples with a_w between 1 and 0.94. A modified procedure was used for samples dryer than a_w 0.94. The sample chamber was first loaded with water, and …

The Effect Of Informed Consent Procedures On Sensory Panel Studies, Roxanne E. Smith

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Through telephone conversations with directors of 25 randomly selected sensory panels, it was established that the informed consent procedures of no-risk sensory panels vary greatly. The concern about biases of panelists' judgements, resulting from information given as part of the informed consent procedures, has been given as the reason for modifying or ignoring federally defined informed consent procedures. A series of three in-house and two separate consumer sensory panels were designed to test whether the ratings of altered flavor, altered viscosity, and unaltered milk could be affected by informed consent form usage. Two separate test situations included informed consent forms …

Accumulation Of Formaldehyde And Its Relation To Postmortem Aging Of Non-Gadoid Fish Species, Mohamad A. Al-Kanhal

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Three non-gadoid fish species, trout (Cynoscion regalis), English sole (Paraophyrys vetulus) and Pacific red snapper (Scomber japonicus) have been tested for the recovery of trimethylamine oxide (TMAO), trimethylamine (TMA), dimethylamine (DMA), and formaldehyde (FA) during postmortem storage at 4°C and -5°C. TMAO, TMA, and DMA content was determined by measuring them as the salt derivative of picric acid. FA was determined by using the 3-Methyl-2-Benzothiazolinone hydrazone test.

In muscle tissue of red snapper and English sole, it was clear that initially TMAO decreased during storage at 4°C, while the amounts of TMA, DMA, and …

Variations In Volatiles From Lamb Adipose Tissue, Yn-Mei Chen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Lamb adipose tissue, representing 4 breeds, 3 sex-types and 3 weight categories, were studied to measure the variation in the flavor profile between individual animals, based on breed, sex- type and carcass weight. The flavor concentrates were prepared by steam distillation, ether extraction and fractionation. Pooled samples were prepared in the same way to measure any variations due to methodology.

Gas chromatographic separation and statistical analysis, based on analysis of variance, indicated that 21 peaks out of 124 peaks showed significant differences (at 5% level or 1% level). Among these 21 peaks, 5 were affected by breed, 4 by sex-type, …

A Growth Study On Children/Adolescents With Insulin Dependent Diabetes Mellitus, Noreen Brown Schvaneveldt

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to investigate the growth of children/adolescents ages 8 through 15 with insulin dependent diabetes mellitus attending Camp UTADA in 1977 and/or 1978 and/or 1979. Measurements included were height, weight, triceps skinfold, mid-arm circumference and mid-arm muscle circumference. Measurements were compared with those of a nor~al, nondiabetic population. Total glycosylated hemoglobin (HbAl), duration of the disease and age at onset of the disease were also investigated for an effect on growth.

The majority of the male subjects were less than the 50th percentile for height and weight. Females were equally distributed above and below the …

The Effects Of Dietary Calcium And/Or Iron Deficiency Upon Murine Intestinal Calcium Binding Protein Activity And Calcium Absorption, Catherine M. Mcdonald

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Iron deficiency has been shown to impair calcium absorption, leading to decreased bone mass. Vitamin D3-dependent calcium binding protein (CaBP) has been demonstrated to be necessary for the active transport of calcium in the intestine of numerous species. Iron deficiency might affect the activity of the calcium binding protein.

Four experimental diets were formulated as follows: Diet 1, iron adequate, calcium adequate; Diet 2, iron deficient, calcium adequate; Diet 3, iron adequate, calcium deficient; Diet 4, iron deficient, calcium deficient. Weanling, female rats were separated into 4 groups of 48 animals each and fed the respective diet for a period …

Optimum Enzyme Treatment For Liberation And Assay Of Pantothenic Acid In Blood, Jan Pearson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A great deal of variability has been evident in reported pantothenic acid blood values. The purpose of the study was to establish optimum enzyme treatment for liberation and assay of pantothenic acid in blood and sera.

There were eight major findings. First, it was found that there was an active pantetheinase in sera, negating the need for hog kidney peptidase or pigeon liver enzyme in whole blood. The second finding (related to the first) indicated that there was significant autolysis of the peptidase bond between the pantothenic acid and cysteamine moieties of coenzyme A in whole blood. The third finding …

The Effects Of A Calcium Pectinate Film Upon Shrinkage, Palatability And Surface Microbial Growth On Carcasses And Selected Beef And Poultry Cuts, Clifford Arthur Stubbs

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A process in which low methoxyl pectin is applied to the surface of meat carcasses and poultry to reduce shrinkage, maintain color and improve shelf life was evaluated. A 3.0 percent aqueous low methoxyl pectin (acidified with 1.4 percent acetic acid if required) was applied to beef, lamb and turkey carcasses by spraying and caused to form a gel coating by overspraying with a 3.5 percent calcium chloride salt solution.

Turkey carcasses treated with acidified pectin or acidified pectin after 3.0 percent acetic acid dip for 30 seconds were not significantly improved in shelf life over carcasses which were acid …

A Nutrition Education Component For High School Health Curriculums, Mary Jane German

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Adolescents, who have been shown to be at nutritional risk, and having poor nutritional knowledge and sporadic eating habits, are in need of comprehensive, sequential nutrition education. The purpose of this study was to develop, implement, and evaluate a nutrition education unit for inclusion in the health education curriculum of secondary schools. The two-week unit which included nutrient density concepts was evaluated in two high schools in Utah.

Data from a mail survey of health educators (n=74) revealed their need for nutrition training and resources, and guidance for integrating nutrition into health classes. High school health teachers were provided with …

Energetics Of Home Dehydration; The Effect On Product Cost And Quality, Crystal Ann Willis

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was two-fold: (1) to compare different home dehydrators and determine if the operation and design of the home dehydrators affected the color, cost, nutrient content, acceptability or flavor of the resulting products and (2) to determine the effect of physical parameters on product color, nutrient content, acceptability and flavor. The physical parameters that were measured during the dehydration process were temperature, relative humidity, and mass flow rate of air. Two products, Daucus carota var sativa (carrot) and juice of Lycopersicon sp. (tomato), were dried in each of six dehydrators (treatments). A sensory panel was used …

Pantothenic Acid Status In An Elderly Population, Nedra K. Christensen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

There has been insufficient data available for suggesting a recommended dietary allowance for pantothenic acid in the elderly population. The purpose of this study was to determine the average dietary intake of pantothenic acid and correlate it with urinary excretions and the blood levels of this vitamin to assess the pantothenic acid status of the elderly population.

A seven day diet record was obtained from 65 non-institutionalized and 26 institutionalized persons over 65 years of age assessed to be free of chronic diseases. A 24 hour urine specimen and a fasting blood sample was obtained from each study participant. An …

Microstructure And Rheology Of Process Cheese, Abdelaziz Hassan Rayan

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Four batches of pasteurized process cheese were prepared from the same Cheddar cheese by cooking to 82C in the presence of sodium citrate, disodium phosphate, tetrasodium pyrophosphate or sodium aluminum phosphate. Each batch contained the same moisture (40.6%) and emulsifying salt concentration (2.5%). The process cheese was sampled for microstructural and rheological examination after 0, 5, 10, 20 and 40 min in the cooker at 82C.

Even though each emulsifying salt affected the physical properties of the process cheese differently, the cheese generally became firmer, stiffer, more elastic and less meltable as cooking time increased from 0 to 40 min. …

Chlorophyll Fluorescence Probe Of Ultraviolet-B Photoinhibition Of Primary Photoreactions In Intact Leaves, Robert S. Nowak

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Damage to primary photosynthetic reactions caused by environmental stress can be assessed by measurement of chlorophyll fluorescence induction in intact leaves. This approach was applied in studies of ultraviolet-B photoinhibition of photosynthesis in Pisum sativum L. and Rumex patientia L. leaves. At ultraviolet-B dose rates insufficient to cause inhibition of net photosynthesis, changes in the magnitude of fluorescence transients did occur, which suggested direct effects on chloroplast pigments in Pisum and inhibition of photosynthetic electron transport between the photosystems in both species. Leaves of these two species subjected to a much higher dose rate had a significant reduction of net …

Production Of Mountain Whitefish (Prosopium Williamsoni) In Altered And Unaltered Reaches Of Two Intermountain Streams In Their Alluvial Flood Plains, Michael J. Ottenbacher

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Estimates of production and related parameters (growth rate, density, standing crop) were made for populations of mountain whitefish in altered and "unaltered" areas of the Blacksmith Fork and Logan River, Utah from spring 1975 through summer 1976. Capture records of marked whitefish were also analyzed to describe fish movement and check on assumptions implicit in the population estimator.

Mean weights and instantaneous growth rates of whitefish were similar at all sites for comparable size/age groups. Among sites, differences in production per sampling interval and annual production were due mainly to differences in standing crop and/or age structure.

Estimates of mountain …

Relationship Between Rainfall And Storm Runoff For Selected Arizona Watersheds, Robert James Anderson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The relationship between rainfall and runoff was examined for twelve selected Arizona watersheds. Expedient runoff volume model coefficients and runoff curve number model parameters were examined using standardized structure, with modifications to adjust the model for small initial abstractions and large watershed storage capacity.

Forest-land management practices were examined for their effects on curve number coefficients. The effects of rainfall characteristics were also evaluated with respect to changes they induce in curve number populations.

Evaluations included a runoff fraction, a simple multiplier of storm volume to produce runoff volume. The accuracy of this model is promising for more permeable watersheds.

A Confidence Interval Estimate Of Percentile, How Coung Jou

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The confidence interval estimate of percentile and its applications were studied. The three methods of estimating a confidence interval were introduced. Some properties of order statistics were reviewed. The Monte Carlo Method -- used to estimate the confidence interval was the most important one among the three methods. The generation of ordered random variables and the estimation of parameters were discussed clearly. The comparison of the three methods showed that the Monte Carlo method would always work, but the K-S and the simplified methods would not.

Resource Partitioning In Breeding Populations Of Marsh Hawks And Short-Eared Owls, Susan C. Linner

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

During the 1979 breeding season four pairs of northern harriers, or marsh hawks (Circus cyaneus) and four pairs of short-eared owls (Asio flammeus) were studied in Cache Valley, Utah. The study was concerned solely with diurnal resource utilization, and did not examine the owls' nocturnal activities. The home range of each harrier pair overlapped substantially with that of an owl pair. Percent habitat overlap for hawk-owl pairs varied from 39 percent to 72 percent. Observations were made to determine if differences existed in their utilization of habitat and food resources, or in their daily and seasonal …

Effects Of Host Plant Patch Size And Surrounding Plant Type On Insect Population Dynamics, Lynn A. Maguire

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of the present study was to investigate how plant spatial patterns and insect behavior interact to influence the population dynamics of insects using the plants. The study included three phases: l) field experiments using collards (Brassica oleracea) and the crucifer insect fauna; 2) simulation models representing the population dynamics of an insect herbivore as functions of insect dispersal behavior and host plant patch size; and 3) model-field syntheses integrating model predictions and field variability estimates to choose an appropriate spatial scale for future field experiments or applications.

In field experiments on surrounding plant type, collards were …

Growth, Morphology, Habit And Habitat Of Selected Brachiopod And Mollusc Species From The Meade Peak Member Of The Phosphoria Formation, Permian, Northeastern Utah - Southeastern Idaho - Southwestern Wyoming, Scott Lewis Russell

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Permian Meade Peak Member of the Phosphoria Formation was examined at four localities in this investigation. Fossils were collected at each locality. The four collecting localities visited in this investigation are: Brazier Canyon, Utah, Montpelier Canyon, Idaho, Coal Canyon, Wyoming, and Cokeville, Wyoming.

The environment of deposition of the Meade Peak Member in the study area is inferred to have been an outer shelf or basin characterized by moderately deep and quiet water. This has aided reconstruction of life habits, population dynamics, and growth characteristics of the examined species.

The articulate brachiopod Leiorhynchoidea weeksi is inferred to have attached …

Effects Of Reinforcement On The Iq Scores Of Preschool Children As A Function Of Initial Iq, Richard H. Weiss

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The effects of tokens as reinforcers on IQ test performance was investigated in 45 preschool Head Start children. There were 63 children assessed using the Slosson Intelligence Test for Children (SIT), and based upon these scores, were divided into three IQ groups: low, average and high. There were 15 children randomly selected from each group and within each of these groups, subjects were randomly assigned to one of three conditions: Control (C) , Pretest experimental (E₁), and no pretest experimental (E₂). The C and E₁ groups were administered the Peabody Picture Vocabulary Test (PPVT), Form …

Assertion Training Groups: Therapist-Directed And Self-Directed Goal Orientation Methods, Lawrence George Jarvis

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The present study was designed to investigate the effectiveness of two methods of goal specification in Assertion Training groups as assessed by two self-report measures, the Goal Attainment Scaling process and the Assertion Inventory. An Assertion Training group method having specific behavioral steps for approaching individualized goals was represented as the Therapist-Directed Assertion Training group. The second Assertion Training group was a Self-Directed group that allowed subjects to independently set and approach their own goals without the assistance of therapists in setting goals. Subjects were selected from among individuals who volunteered for the Assertion Training group in response to solicitation …

Dissociation, Association And Running Time, Dana L. Miller

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The objective of this research was to investigate relationship between dissociative and associative cognitive strategies for coping with the discomfort of running and running performance.

Subjects were volunteers enrolled in two Dynamic Fitness classes which were taught during Spring Quarter, 1980, at Utah State University. Class A consisted of 36 subjects (24 male, 12 female) and Class B consisted of 28 subjects (13 male, 15 female). All pretest, posttest, and treatment procedures were conducted during the class's respective regularly scheduled meeting times.

Subjects completed a 2.75 mile, timed, pretest run and were systematically assigned to one of three groups based …

Conscious Anxiety, Conscious Repression And Ego-Strength As Related To Dream Recall, Content And Vividness, David Newbold

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Subjects' reported dream recall frequency, dream content and vividness or recall were discussed and examined in relation to sex of the subject and MMPI Conscious Anxiety, Conscious Repression and Ego-strength scores.

Fifty-three Utah State University students, who volunteered to participate in a study of dreaming behavior, were administered the MMPI and asked to complete a dream log diary. The dream log required a daily recording of total number of dreams recalled, the number of vividly and vaguely recalled dreams and a rating of each dream in one of four dream content-process categories. Content-process categories included pleasurable, working, conflict and disorganized/frightening …

A Proposed Method Of Student Selection Using A Biographical Inventory As An Adjunctive Predictive Criterion, Jeffrey Scott Orme

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this paper was to investigate whether or not the use of a biographical inventory would be a feasible and viable adjunctive means of making more accurate predictions of student success in programs of upper-division and graduate study in speech pathology and audiology. During the past years, biographical inventories have been found to be predictive of creativity, performance as a military officer, performance in varied occupations, and academic performance. It was hypothesized that a biographical inventory could be developed which, when used in conjunction with the existing academic predictors of Grade Point Average and Graduate Records Examination scores, …

Hypnosis, Pain Control And Personality Change In Rheumatoid Arthritic Patients, G. Craig Orme

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this project was to examine the effect of hypnosis as a treatment in the control of pain in a population of rheumatoid arthritic patients and further to examine any associated change in emotionality.

Three groups of patients suffering from the pain of rheumatoid arthritis were selected. One group served as a control group. The other two groups served as a modified control group and as a treatment group, respectively.

All three groups were pre, mid, and post-tested using the McGill Pan Questionnaire, the Minnesota Multiphasic Personality Inventory, the California Personality Inventory Well-Being scale items, and a check …

The Effects Of Taped Relaxation Training On Physiological Events And Home And Classroom Behavior Of Hyperactive Children, Phyllis L. Cole

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A multiple baseline design across subjects was employed to study the effects of taped relaxation training on frontalis EMG, EEG alpha and theta activity, finger skin temperature, and classroom and home behavior (Experiment I) of three male elementary school children identified as hyperactive by their classroom teachers and parents on behavior rating scales for hyperactivity. The three subjects ranged in age from 5 years 10 months to 7 years 9 months, with a mean age of 6 years 8 months. Four physiological variables of the subjects were monitored during daily sessions from Monday to Friday in a laboratory setting. After …

The Interaction Of Locus Of Control And The Structure Of Relaxation Training, Bevan Todd Graybill

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to evaluate the thesis that matching locus of control with therapeutic treatment enhances behavior change. This idea was tested by comparing the effectiveness of a structured. and an unstructured. home practice of relaxation for internal and external locus of control subjects. It was expected that internal locus of control subjects would respond better to the unstructured. training method and external locus of control subjects would respond better to the structured technique.

The subjects were 80 undergraduate college students. Forty internal locus of control students and 40 external locus of control students, with the highest …