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Some Effects Of Different Temperatures On The Development Of The Black Grass Bug (Labops Hesperius Uhler) From The Egg Through The Adult Stage, Osiris L. Paraqueima

Biology

A study of some effects of different temperatures on the development of the black grass bug (Labops hesperius Uhler) was conducted in the laboratory and the results compared with the insect's development in the field. The purpose of this study was to develop a method of rearing grass bugs in the laboratory so research with these insects could be conducted all year, and to formulate a growing degree hour model that might help predict hatching and development of the bugs in the laboratory and field, and be a guide in timing proper control measures in the field. L. hesperius were …

Non-Linear Ordination: Field And Computer Simulation Testing Of A New Method, Donald L. Phillips

Biology

Recent studies suggest problems resulting from using essentially linear ordination techniques on non-linear ecological data. A new non-linear method, termed polynomial ordination, was developed in response to these problems. Its effectiveness was compared to that of two standard techniques, Bray-Curtis ordination and principal components analysis, by testing with both simulated and field data. The original species axes are resolved into their principal components. If significant curvilinear relationships between principal components are present, new axes are defined along these curves. The positions of the sample points along the axes are then coordinatized. Using simulated data, the coordinates of the sample points …

A Study Of The Need For A Personal-Use Typewriting Class At Utah State University, Rolayne Day Earl

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

As early as 1926, typewriting began to change from a strictly vocational skill to a multi-use skill that included nonvocational aspects. Since the skills required for vocational purposes are not the same as those required for personal use, typewriting instructors developed courses for those interested in learning personal-use typewriting.

The overall objective of a personal-use typewriting class is to equip the students with enough skill and knowledge to be able to express themselves "directly on paper without stumbling over the mechanics of either typing or language skills." The college class In personal-use typewriting is usually a one-semester class emphasizing composition …

The Feasibility Of A Computer-Based Library Reference Interview, Stephen C. Weiss

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

The feasibility of a computer-based library reference interview is forecasted through an analysis of the literature concerned with primary aspects of the library reference interview, concept formation, computer concept formation, computerization of reference service and the future of reference service. The state of the art is discussed in light of specific computer programs currently available for the automation of library reference service. Factors supporting and limiting the automation of library reference service are presented. Conclusions and recommendations are made for the realization of a computer-based library reference interview.

Rodent Density And Species Composition In The Snake River Birds Of Prey Natural Area, Idaho, Jon R. Montan Jr.

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Rodent densities were estimated in the major vegetation types of the Snake River Birds of Prey Natural Area in 1975 and 1976 by a combination of live-trapping and kill-trapping. Only deer mice (Peromyscus maniculatus) were numerous enough to permit reliable density estimates. Relative densities of other rodent species were indicated by kill-trap capture rates. Densities of deer mice correlated well (r = 0.99) with kill-trap capture rates. The use of kill-trapping in place of live-trapping in 1976 permitted extensive sampling throughout the 1930 km² study area. Differences were found among the major vegetation and land-use types in …

A Self-Instructional, Multi-Media Approach To Facilitate The Teaching Of The Index Of Nutritional Quality, Claudia Kay Probart

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A review of the literature dealing with nutrition education established the following: (a) that there is a need for nutrition education at the elementary school level; (b) that elementary teachers do not always have the background or motivation to meet this need for nutrition education; and (c) that new educational methods that are easier to understand and more highly motivating are needed.

The Index of Nutritional Quantity (INQ), a nutrient density concept, was developed at Utah State University to answer the need for easily understood and motivating nutrition information. The INQ method of nutrition education has been used and considered …

The Relationship Of Molybdenum To Iron Status In Pregnancy And Anemia In Rats And Humans, Jo Ann Mortensen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Weanling male rats were made anemic and fed diets supplemented with 20 ppm iron and/or 2 ppm molybdenum. A decrease in serum iron was observed in the rats supplemented only with iron and a significant decrease in hemoglobin was observed in rats given no supplementation.

In a second experiment, pregnant female rats were also fed diets supplemented with 20 ppm iron and/or 2 ppm molybdenum. An inverse relationship was apparent between iron and copper in both the serum and the liver of the female rats. The livers of their pups displayed an inverse relationship between molybdenum and copper. Hemoglobin in …

Energy Usage Trends, Energy-Food Conversion Efficiency, And Relative Energy Efficiency Of Primary Crop Agriculture, Estimated From Energy-Nutrient Conversion Ratios In Mexico, India, United States, And Japan, Gerald L. Blight

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Energy-nutrient conversion ratios, as a measure of relative agricultural efficiency for Mexico, India, in the United States, and Japan between 1951 and 1974, were calculated for protein, B-vitamins, calcium, iron and food energy production. Estimates from the different nutrient ratios showed a range in percent change of production efficiency over the twenty-four year period. Indian estimates were the most consistent with only a 7 percent variability. Japan (23 percent), United States (42 percent), and Mexico (43 percent) each showed greater variability in their efficiency estimate ranges from aggregate energy-nutrient conversion ratios. Japan was the only country for which negative trends …

Religious And Geographic Correlates Of Breast Feeding, Joan Boyington Sellers

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study focused mainly upon regional and religious variables influencing a mother's decision for a particular infant feeding practice. The problem of this study was to investigate the breast feeding and maternal attitudes of Mormon and non-Mormon mothers who were raised within the Mountain States region and compare them to the attitudes of Mormon and non-Mormon women who are not residents of this region.

No significant differences were found between the resident and non- resident women in their practice of bottle or breast feeding, nor was any significant difference found between the number of Mormon and non-Mormon women who breast …

Evaluation Of The Home Management House Residency By Former Students, Joy Wadley Erekson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The usefulness of the home management house residence course at Utah State University as perceived by former students was studied.

The sample consisted of 112 students, residents of the home management house between 1967 and 1975.

The instruments used were: a background questionnaire and a management skill usefulness scale. The statistical tests used were the t test and analysis of variance.

The course was rated as being very useful, both personally and professionally by the graduates. It was found that the three variables being tested (professional employment, grade earned from the course and graduate resident advisor) did not make significant …

Factors Influencing The Use Of Small Electrical Kitchen Appliances, Kathi Marie Braegger

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Comparisons were made to determine which appliances owned by homemakers were used often and which appliances were used seldom or never and to relate areas of satisfaction and dissatisfaction to the amount of appliance use. The sample consisted of 123 homemakers from Cache and Weber counties in Utah.

Five hypotheses were tested. The amount of appliance use was significantly related to method of acquisition, performance, design and knowledge factors. The amount of appliance use was not significantly related to storage factors.

Children's Attitudes Toward The Dental Experience, Tom Leo Day

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to examine the attitudes of children toward the dental visit. A group of children who had undergone dental treatment with the use of nitrous oxide-oxygen served as the experimental group while children who had received dental treatment without the use of nitrous oxide-oxygen served as the control group. Attitudes toward the dental experience among these two groups were compared to determine any differences or similarities due to the type of treatment used. Data were also collected on the parents of the children to determine whether the child's attitude toward the dental visit tended to …

An Economic Analysis Of Predation Control And Predatory Sheep Losses In Southwestern Utah, R. Garth Taylor

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

To provide accurate data concerning sheep losses resulting from predation, a verification study of sheep predation was initiated in March 1972 in the Cedar City area of Utah. In cooperation with the Cedar City Wool Growers Association and Southern Utah State College Experimental Farm, ten sheep ranches were chosen as sample operations, forming the data base for the initial phase of the study (1972-1974).

Cooperating ranchers were asked to promptly report all sheep carcasses or injured sheep, so that an examination could immediately be made to ascertain the cause of death or injury. Daily horseback searches were also conducted on …

Interpretations And Implementations Of Compulsory Free Enterprise Education In Utah Public High Schools, Marsha M. Campbell

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Utah legislature passed Senate Bill 203 in 1975, requiring all public secondary schools to offer instruction on the essentials and benefits of free enterprise. The problem is that no evaluation has been made to determine if the specific requirement is being fulfilled. The purpose of this study is to determine interpretations and implementations of Senate Bill 203. Questions in four areas were studied.

1. Administrators: (a) how did administrators of the districts interpret the guidelines, (b) how did the administrators decide upon the approach followed, (c) how did the administrators justify the approach followed, (d) what instructional materials did …

A Comparative Evaluation Of Listening Skills Of Hearing Impaired Preschool Children Treated By The Home Auditory Program, Utah Project Ski*Hi, 1972-75, Susan Gail Crant Carne

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this paper was to evaluate the effectiveness of the Home Auditory Program of Project SKI*HI on the listening skills of its students during the years 1972-1975. The scores of two groups of children, as measured on the SKI*HI Listening Skills Scale were compared. The statistical evaluation indicated that: 1. Significant improvements in listening skills were demonstrated by one group of children during three to eleven months of treatment, and 2. The scores of this treated group were significantly superior to the non-treated group, despite a similarity in age and degree of hearing loss between the two groups. …

The Cache County Snowmobiler: An Empirical Study, Michael William Dierker

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Snowmobiling is one of the major outdoor winter sports in Cache County, Utah. Despite its popularity, it has run into several problems, among which the most noticeable is its conflict with other winter recreationists, namely, cross-country skiers and snowshoers. In order to resolve this conflict, one must first understand more about each group involved. As such, the purpose of this research was to obtain information on the snowmobiler in Cache County, Utah. Specifically, the objectives of the study were: (1) to identify the attitudes of the snowmobiler toward leisure and the environment; (2) to identify and compare occupations, SES, and …

Capitalization Effects Of Property Tax Differentials, Paul Johnston Mcnutt

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The capitalization effect of property tax differentials for the four market quarters in 1976 was studied in the Logan, Utah market area. A secondary aspect of the study was to assess the variations in the assessed to market value ratio.

107 observed sales were used for the data set. Age of structure, square feet in structure, quality of neighborhood, and property tax were noted for each property sold.

From the regression analysis it was found that there was a significant capitalization of the tax differentials. The results indicate that a one-percent change in the property tax will result in a …

Subtle Teratogenic Effects Of Locoweed In Rats, Benjamin K. Nelson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Locoweed, a well-known teratogenic plant affecting livestock, is prevalent in mountain regions of the Western United States. Two common species (Astragalus lentiginosus and A. wootoni), administered to pregnant rats, induced behavioral deviations in their offspring. Treated mothers consumed less feed and gained less wieght during gestation than controls when gavaged locoweed at the rate of 1 gram whole plant per day on days 7 through 17 of gestation. A. lentiginosus reduced pup weight at birth (13% less than controls) and this weight reduction (as much as 29% less than controls) continued at least four weeks. A. lentiginosus also …

The Influence Of Various Factors On Nitrogen Balance And Protein Quality Measured In Adult Human Beings, Arthur John Wittwer

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The effect of nitrogen intake, nitrogen source, calorie intake, body weight, adaptation time, research group and sex on the nitrogen balance of human adults was investigated. Data from studies reported in the literature were combined and analyzed statistically by multiple regression techniques. Analyses were made separately for six sources of nitrogen: egg, beef, rice, corn, wheat and wheat gluten.

Nitrogen intake, caloric intake and body weight exerted significant effects on nitrogen balance (5% level of confidence) for six, three and two of the six nitrogen sources, respectively. Other variables were not significant at the 5% level. Although differences were not …

Relationships Of Vegetation To Environment In Canyonlands National Park, Walter Lee Loope

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The vegetation of Canyonlands National Park, Utah, has been described from 157 samples located throughout the Park. Species frequency, density and cover were recorded along with measurements of soil thickness, slope, aspect, elevation and geologic substrate at each site. Measurements of soil texture, pH, and electrical conductivity were taken for a representative subsample. A map of the vegetation of the Park was made by relating the sample points to their corresponding spectral signatures on vertical aerial photographs and locating boundaries between vegetation units by means of changes in photo signatures.

Vegetation in these arid to semi-arid environments appears to be …

A Comparison Of Dewpoint And Psychrometric Mode In Leaf Water Potential Measurements, Gladys Durand-Campero

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Leaf water potential of two maize plants (Zea mays L.) two chlorophytum plants (Chlorophytwn capense, Kuntze), a schefflera (Brassaia actinophylla) and one aspen (Populus tremuloides Michx.), were measured under laboratory conditions with aluminum block in situ leaf hygrometers and with stainless steel single junction chamber hygrometer using excised entire leaves. Plants were subjected to a drying cycle. The hygrometers were controlled with a dewpoint microvoltmeter and all readouts were recorded on a chart recorder. A typical reading and control schedule included 20 second cooling before a first psychrometric reading allowing the output to …

Shoshoni Conceptualizations Of Plant Relationships, Bryan Ray Spykerman

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Interviews were conducted with 10 Shoshoni-speaking people to investigate conceptualizations of plant relationships. A card-sort technique and informal questioning were employed in an attempt to elicit plant classifications and taxonomic relationships. Results indicate classifications are based on multiple criteria including morphology, cultural utilization, geographic setting and growth habit. A paradigm which postulates conceptualizations based on prototypic images fits the data better than the supposition that memory is composed of extensive taxonomic structures.

A Preliminary Investigation Of The Lipid Of Halophilic Bacteria As A Food Additive, Neil F. Collins

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study was conducted to evaluate the feasibility of obtaining workable quantities of the unusual ether-linked phosphatidyl glycerophosphate of halophilic bacteria through batch culture of Halobacterium halobium. Once isolated and purified, physical, emulsification, and toxicological properties of the lipid were evaluated with respect to its use as a nonnutritive lipid substitute or an emulsifier by the food industry. These evaluations included physical descriptions, melting properties, hydrophile-lipophile balance (HLB) determination, and oral and intraperitoneal administration of the lipid to laboratory mice.

Graduate Recital, Donna Gatlin Davis

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Preparation for the graduate recital provides the Master's candidate an opportunity to exercise a variety of musical skills. Choosing the best possible program requires not only a working knowledge of the available repertory, but a personal assessment of the particular voice with its characteristic strengths and weaknesses. The final selection must reflect a fine balance of material difficult enough to provide a musical challenge and material with which a singer can feel comfortable in communicating.

Working toward the performance involves both intellectual preparation through research and physical preparation through vocal conditioning. It is not enough to anticipate vocal difficulties and …

The Influence Of Certain Growth Hormones On Plant Growth At Cold Temperatures, Michael D. Salvesen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Studies were conducted to determine the effect of externally applied growth hormones on winter rye (Secale cereale var. cougar). The rye was grown under the snow in a specially prepared tunnel on a mountain side near Logan, Utah. These plants showed a remarkable ability to grow at 0°C. Three growth hormones, kinetin, gibberellic acid (GA), and auxin (indole-3-acetic acid) were externally applied to rye seedlings growing in the tunnel. These seedlings were alter weighed, measured and tested for soluble protein content. The three hormone treatments had no significant effects on the fresh weights or shoot lengths of the …

Effect Of Drilling Fluid Components And Mixtures On Plants And Soils, Parvin Pesaran (Djavan)

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The concern about the environment has required that the effects of drilling fluids (muds) on surrounding areas be known. This study was initiated to investigate the effects of various muds on plant growth and on soils.

In preliminary studies in Phase I (31 individual mud components), it was concluded that the obvious dominant effects on plant growth of detrimental drilling fluid components included excess soluble salts, excess exchangeable sodium percentage, possibly a high pH in some mixtures, and undesirable physical conditions. The latter resulted from the sodium and/or starch, gums, and bentonite.

Phase II, the second year's study of the …

Vertical Mesoscale Water Vapor Flux In An Irrigated Valley, Esmaiel Malek

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

To obtain the profiles of dry bulb and wet bulb temperature, specific humidity, q, and air density, ρ, to a height of 200 meters above the ground, a precise lightweight thermocouple psychrometer was designed. To lift the thermocouple psychrometer and the attached wires in obtaining the ρq profiles, a rigid polyethylene balloon augmented with 5.5-feet outdoor or 100-g meteorological balloons were used. Using the height dependent eddy exchange coefficient and a one-dimensional time-dependent profile model, the nighttime variations of ρq as a function of height were predicted and compared with observed values. It was found that the general shape of …

Multiple Forms Of Deoxyribonucleic Acid-Dependent Ribonucleic Acid Polymerase In Barley Leaves (Hordeum Vulgare L.), Sachchidananda Javali

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Ribonucleic acid polymerases (E.C. 2.7.7.6) have been solubilized form whole green leaves of barley (Hordeum vulgare L.). Three major forms of the solubilized enzyme have been isolated by sonication in high ionic strength buffers, cation and anion exchange chromatography, and agarose gel permeation chromatography and designated I, II, and III. The enzyme fractions appear analogous to the Class I, II, and III ribonucleic acid polymerases defined in other eucaryotic systems. The ionic strength optima, amatoxin sensitivity, and relative activities with denatured calf thymus deoxyribonucleic acid were different for Class I, II, and III polymerases.

A simple, rapid, reproducible method …

The Imgrid Computer System For Land Use Studies: Testing And Documentation For Utah State University, Walter Donald Bremer

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This paper is the result of the adaptation and testing of the IMGRID Programming System acquired from Harvard University, for land use studies in the Department Landscape Architecture and Environmental Planning at Utah State University. The system utilizes rectangular coordinate grid cell data for storage and analysis, and is now in operation on the Burroughs B 6700 computer system.

The operation of Utah State IMGRID is documented here to reflect the types of analyses which are currently performed in this region, and examples provided to demonstrate the system to graduate students and others who are interested in land use analysis. …

A Proposal That The City Manager Form Of Government Be Adopted In Logan, Utah, Serge N. Benson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Logan, Utah has a number of organizational and procedural problems, as do many other American cities. This study was initiated with the hope that some system could be ascertained that would solve or alleviate most of these problems.

The history and development of the City Manager Plan of Government was researched thoroughly and a number of cities with the plan in operation in whole, or in part, were studied.

The conclusion was that Logan, Utah would substantially improve the efficiency of its operations as a whole if it adopted the City Manager Plan. This thesis is of the advocacy type, …