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Detection Of Neonatal Calf Diarrhea Virus (Ncdv) And Human Infant Reolike Diarrhea Virus, Martin Wyatt Peterson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to develop a diagnostic test and conduct a survey for the neonatal calf diarrhea virus (NCDV) and human infant reolike diarrhea virus. Two immunologic methods were developed in this investigation.

Immune electron microscopy (IEM) and the fluorescent viral precipitin test (FVPT) are the methods used to detect NCDV and the human virus. Both methods are based upon the principle that viral aggregates form when the virus is reacted with anti-NCDV antibody. Aggregates in the IEM method are negatively stained and observed with the use of an electron microscope. Fluorescein labeled antibody is used in …

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 …

Dispersion Of The Host Specific Phytophagous Insects Of Duncecap Larkspur (Delphinium Occidentale) In The Wasatch Mountains Of Utah, Robert L. Bayn Jr.

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Populations of Delphinium occidentale (Ranunculaceae)were monitored over two summers for the presence and dispersion of various life stages of several host specific phytophagous insects. Observations were made at several sites in the Wasatch National Forest east of Logan, Utah. Two species of larkspur aphid (Aphis rociadae and Kakimia wahinkae) were encountered. Although dispersal of alate individuals resulted in widespread infestation of the host plant population, aphids occurred initially on the same one or few plants at each site both springs. Little coexistence of the two species of aphid on the same plant was observed, perhaps because they partitioned …

Lagoon Effluent Polishing By Soil Mantle Treatment Using Various Utah Soil Types, Roger Scott Tinkey

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this paper is to investigate the effectiveness of four Utah Great Basin soil types in removing particular chemical constituents and select enteric organisms from a sewage lagoon effluent. Sewage taken from the secondary oxidation pond in Logan, Utah was applied daily to lysimeters which allowed samples to be recovered at 7.6 and 38.1 centimeter soil depths. The texture of the soils was the most important physical property affecting their removal capacity. Drainage Farm soil (clay) provided the best bacteriological and overall chemical removal with Nibley (silty clay loam) second, then Draper (sandy loam) and Parleys (silty loam) …

Gas Exchange And Water Relations Of Two Alpine And Two Arctic Tundra Plant Species, Douglas Allan Johnson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Although water stress is an important selective force in many environments, it is not commonly considered to be of particular importance in tundra areas. Even though large portions of tundra may have an abundance of water, other more exposed areas may become quite dry. This microsite variability with respect to moisture stress was reflected in soil water potential measurements obtained from an alpine tundra area on Niwot Ridge in Colorado. Even though soil water potentials were consistently above -5 bars in a relatively low lying Deschampsia meadow, soil water potentials from an exposed fellfield area were often as low as …

In Situ Nitrogen Fixation In Cold Desert Soil-Algae Crust In Northern Utah, Darwin Levoy Sorensen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Nitrogen fixation, as measured by the acetylene-ethylene assay, in the surface soils of southern Curlew Valley, Utah-Idaho was studied. The removal of nitrogen from the surface soil by precipitation runoff water was also studied, and the role of the soil-algae crust in preventing erosive loss of nitrogen was evaluated.

Nitrogen fixation during the study year was estimated to be less than 10 kg/ha. This level is probably sufficient to maintain steady-state on an annual basis in standing crop nitrogen in this environment.

Well structured, lichenous crusts had improved infiltration of precipitation and lowered erosive loss of nitrogen. Poorly structured and …

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 …

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 …

Ammonia And Nitrate Nitrogen In The Soil Profile And Its Relation To Various Nitrogen Treatments On Dry-Land Winter Wheat, Abraham E. Van Luik

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In a dry-land winter wheat field, patterns of mineral nitrogen distributions were investigated before and after fertilizer additions.

Large differences in the added mineral nitrogen recoverable three weeks after treatment were found to be specific to nitrogen source and treatment within source.

Initial losses averaged 50 percent for urea treatments, 40 percent for calcium nitrate treatments, and varied from a loss of 18 percent to a gain of 22 percent for ammonium nitrate treatments. Ammonium sulfate proved the most variable with a 36 percent average loss for the before-planting treatment and a 61 percent gain for the after-planting treatment.

This …

Hunter Access To Private Lands And Attitudes Of Utah Landholders Toward Hunting, James R. Kitts

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Immediately following the 1971 upland game season a questionnaire booklet was mailed to 2076 Utah farmers and ranchers (landholders) in five southern and six northern counties. Approximately 50 percent were returned containing usable Information.

Five categories of hunter access restriction were considered: 1) fee systems, 2) leases to private clubs, 3) pheasant hunting units, 4) posting ''Hunting by Permission Only," and 5) posting "No Hunting" or "No Trespassing. " Restriction of hunter access to private property occurred twice as frequently in northern counties as in southern counties. Nearly six of every ten northern landholders had an active hunter restriction program. …

Anxiety Correlates Of Sex Role Identity, Mary Kay Biaggio

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to examine differences in anxiety levels between the sexes and between sex role identification groups (as defined by scores on a test of masculinity-femininity). Possible explanations for these differences were explored using a questionnaire made up of an openness versus closedness scale, a liberalism versus conservatism scale, and a cross-sex versus same-sex parent identification scale.

A sample of 108 females and 71 males was administered Gough's Femininity Scale, Cattell's IPAT Anxiety Scale Questionnaire, Taylor's Manifest Anxiety Scale, and a questionnaire devised for this particular study.

The sexes did not differ significantly in anxiety level …

Factors Relating To Diapause In The Alfalfa Weevil Parasite Bathyplectes Curculionis (Thomson), David S. Parrish

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Biological and ecological factors regulating diapause in the ichneumonid parasite of the alfalfa weevil, Bathyplectes curculionis (Thomson), were studied. In most experiments, both parasites and weevil larvae were maintained in the environmental conditions under study from the emergence of the adult parasite until the evaluation of results.

The factors either preventing or inducing diapause in B. curculionis were found to be an interaction of environmental factors. A long scotophase with cool temperatures prevented diapause. The percentage of nondiapausing parasites increased as the scotophase was increased to 15 hours. Over 15 hours of scotophase, fewer nondiapausing parasites were produced. The optimum …

A Comparison Of Three Methods Used To Analyze Pronghorn Antelope Diets, Leonard J. Shandruk

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

An increasing interest in fecal analysis as a method of determining diets of herbivores prompted research to determine if this method could be used successfully to determine diets of pronghorn antelope found in Utah's cold desert rangelands. In addition to fecal analysis, quantitative estimates of pronghorn diets were derived from rumen analysis and feeding site observations. Rumen samples were analyzed by three different methods: (1) microscopic, (2) gravimetric, and (3) point frame. In addition to field experiments, samples from a feeding trial with a diet of known composition were used to determine whether or not differential digestion of plant epidermis …

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 …

Leave-Taking Behavior Between Preschool Children And Their Parents, Elizabeth Y. Aoki

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Behavior of 84 parent-child dyads engaged in separation in preschool settings are presented. A factor analysis and correlation matrix revealed patterns of child-parent-teacher interaction, child-parent tactile-affiliative behavior, and child dependency-attachment behavior. The main pattern showed high parent-teacher gazing, smiling, and approaching interaction and high teacher smiling and gazing activity toward the child. A teacher-mediator theory in which the teacher's presence is important as an anxiety-lessening factor in child-parent leave-taking behavior is suggested and discussed to both interpret the findings and for further leave-taking research.

Stability Of Stream Communities Exposed To Underground Nuclear Tests On Amchitka, Aleutian Islands, Alaska, Richard Ames Valdez

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A major bioenvironmental effect of The United States Atomic Energy Commission's Underground Nuclear Testing Program on Amchitka Island, Alaska was the decimation of stream communities by drilling muds from the device emplacement holes. These muds reached two of these streams 4 months and 2 years before the Milrow and Cannikin tests, respectively. Recolonization of fishes and macroinvertebrates in these small streams (Clevenger and White Alice Creeks) began 1 month after spill abatement.

Complete recovery of Dolly Varden in Clevenger Creek occurred less than 5 years after the spill. Of the other native fishes, pink salmon spawned 1 1/2 years after …

A Hydro-Quality Model To Predict The Effects Of Biological Transformations On The Chemical Quality Of Return Flow, V. A. Narasimhan

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A computerized mathematical model has been developed to simulate the system hydrology and water-salinity (as indicated by seven major ions constituting the salt) of a river basin, in which irrigation is the major beneficial water user. The overall system simulation model consists of three submodels: (1) a general hydrologic submodel programmed on a hybrid computer; (2) a chemical submodel to predict the quality of percolated water through the soil profile; and (3) a biological transformation submodel in respect of microbial nitrogen transformations, which is utilized by the chemical submodel. Both the chemical and biological submodels are programmed on a digital …

The Contribution Of Subsoil Phosphorus To The Nutrition Of Alfalfa As Influenced By Soil Temperature, Reuel E. Lamborn

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

High bicarbonate-soluble phosphorus (P) in some Utah subsoils may affect the validity of fertilizer recommendations based on plow layer samples. The primary objective of this experiment was to determine the proportion of plant P derived from subsoils at typical Utah soil P levels and soil temperatures.

A calcareous soil very low in bicarbonate-soluble P was treated with various amounts of P and packed into deep pots to provide 24 centimeters of "topsoil" and 27 centimeters of "subsoil". Water baths in a growth chamber were used to control soil temperatures at 14 centigrade and 20 centigrade. Light, air temperature and humidity …

Residual Nitrogen As It Affects Soil Fertility Under Irrigated Agriculture In A Tropical Wet-Dry Climate, Don Carlos Kidman

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In the Zapotitan Valley near San Andres, El Salvador, Central America, an experiment was conducted to determine the availability of residual soil N to corn grown during the rainy season. This was an extension of an experiment conducted during the preceding dry season. The variables of the dry season experiment were irrigation method, crop, and rate of fertilizer N application. Soil NO₃-N and NH₄-N were determined by soil sample analysis to a soil depth of 120 cm by 30 cm depth increments. The samples were taken at the end of the dry season experiment and again …

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 …

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 …

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 …

Relationship Of Circulating Eosinophils, Other Blood Cellular Components And Plasma Corticoids In Dairy Cattle Subjected To Nutritional Stress, Eugene W. Wisniewski

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Twenty-six first lactation dairy cattle were sampled biweekly for four months to determine the effect of five levels of nutrition on blood plasma corticoids, total and differential leucocytes, hemoglobin and packed cell volume. Cows completing their 305 day lactation during the four month sampling interval were removed from the experimental herd, but were sampled twice more.

It was hypothesized that cows on rations below NRC requirements for milk production would demonstrate stress symptoms of elevated plasma corticoids, elevated white blood count, neutrophilia and eosinopenia. It was also hypothesized that measuring the decrease in eosinophils would be a better method of …

Evaluation Of A Clothing Construction Waiver Test At Utah State University With Implications For Revision, Judy Sims Starkey

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this paper is to evaluate a clothing construction waiver test at Utah State University so it can become a better predictor of student past experience and future performance. The original test and a revised test, written by the investigator, were used as the instrument. The subjects included two groups of students--those who had taken the Basic Clothing Construction Course at Utah State University and those who had not taken the course. The results indicate that there is a difference between the knowledge of the students who have and have not taken the course. lt was also indicated …

Some Aspects Of Geochemistry Of The Water And Sediment Of Bear Lake, Idaho-Utah, Richard H. Fuller

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Development by man through the last half century has caused a number of changes in Bear Lake. These changes include the diversion of Bear River water into Bear Lake, the pumping of lake water back into the river, and the building of breakwaters and other obstructions along the shore of Bear Lake.

The diversion of Bear River water into the lake has resulted in a yearly addition of an estimated 36,000 metric tons of calcium into the lake, which has caused the precipitation of an estimated minimum 90,000 metric tons of aragonite. The pumping of Bear Lake water back into …

Effect Of Cryotherapy In Preventing Blistering And Tearing Of Hands Of Utah State University Male Gymnasts, Wayne E. Larson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to compare the effectiveness of cryotherapy versus no treatment in preventing blistering and tearing of the hands of twenty-six male college age gymnastics students at Utah State University.

The subjects were tested with a hand dynamometer to determine differences in grip strength between right and left hands. Two groups of thirteen subjects each were formed to equalize the differences in grip strength.

During the experimental period of four class sessions totaling two hours, subjects participated in various activities on the horizontal bar, parallel bars, and rings which required simultaneous gripping by both hands. Whenever …

Plant Light Responses Under Snow, Steven G. Richardson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Several montane plant species and one alpine species were observed to grow under snow, and the seeds of 19 species germinated under snow. The spectral irradiance of light penetrating up to 198 cm of snow was measured with a device employing a photomultiplier tube and a series of interference filters. In deep snow, the measured peak in transmission was near 500 nm, but in older, more shallow snow the peak was at 550 nm. On two occasions measurements were made both before and after sunrise. There was a shift in the spectra toward the longer wavelengths as the sun rose …

The Effects Of Drill On Addition-Subtraction Fact Learning: With Implication Of Piagetian Reversibility, Ted E. Davidson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to investigate the relationship between addition and subtraction as inverse operations, to determine how drill in addition facts will affect knowledge of subtraction facts; to infer, if possible, when addition is conceptualized as an operation with reversibility; and to determine at which grade levels a particular method of drill is effective.

The sample was drawn from Logan, Utah , small, city school district of 3700 students. The experimental groups consisted of 12 elementary and eight secondary existing classrooms of students. The control groups consisted of 10 elementary and five secondary existing classroom groups. A …

Structure Of Songs And Organization Of Singing In Fox Sparrows Breeding In Northern Utah And Southern Idaho, Dennis John Martin

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Structure of songs and organization of singing in 133 Fox Sparrows Passerella iliaca were studied during 2 breeding seasons in 3 geographically separate populations in northern Utah and southern Idaho. The structure of songs was analyzed with the aid of an audiospectrograph. The organization of the singing of songs in 56 birds was analyzed by applying Markov chain analyses to the sequences of songs uttered.

Songs were composed of syllable-types, of which 49 were recognized. Syllable-types could occur singly or be serially repeated within songs, but they were never fractured so that only a portion of one would be in …

Behavioral Induction In Guinea Pigs As A Function Of Reinforcement Magnitude In Multiple Schedules Of Negative Reinforcement, Dennis L. Burns

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to examine the effects of changes in magnitude of negative reinforcement on multiple schedules with the guinea pigs. In both schedule components, the first response (lever press) after an average of 10 seconds was reinforced. In the constant component of this schedule the reinforcement magnitude (time-off from electric foot shock) was always 15 seconds; whereas, in the manipulated component the magnitude changed in the following sequence: 15, 7.5, 15, 30, and 15 seconds. All subjects showed a gradual decrease in response rate across baseline conditions. When behavioral effects were evaluated relative to this changing …