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Selection At The Molecular Level: Competition Between Members Of The Lambdoid Family Of Bacteriophages, Kandy D. Baumgardner

Biology

Competition between lambda and 434 hy mi and lambda and phi80 was investigated, making use of long-term transfer experiments to follow evolutionary trends of the phage populations. The competitive superiority of lambda at 37 C is shown by the elimination of 434 hy mi and phi80 from mixed populations. A reversal in the outcome of competition between lambda and phi80 was observed when the phages were grown at low temperature. The temporal course and final outcome of competition appear to be genetically determined responses of the phages to their specific environment. No relation between phage yield per cell and advantage …

Fine Structural Aspects Of Development Of Eimeria Ninakohlyakimovae In Cultured Cells, Gary L. Kelley

Biology

Development of Eimeria ninakohlyakimovae from intracellular sporozoites to mature first-generation merozoites was studied. Monolayer cell line cultures of ovine trachea, kidney, and thyroid cells were inoculated with sporozoites of E. ninakohlyakimovae. Cultures containing parasites were fixed at the appropriate number of days after inoculation and prepared for examination. Sporozoites, trophozoites, schizonts, and merozoites grown in cultured cells were examined with the electron microscope. Intracellular sporozoites had ultrastructural characteristics similar to those of extracellular sporozites, except that apparently functional micropores were observed. During transformation of sporozoites to trophozoites, the conoid, annuli, and subpellicular tubules, as well as some portions of …

Carbaryl Penetration And Metabolism In The Alfalfa Leafcutting Bee, Megachile Pacifica (Panzer), Guirguis N. Guirguis

Biology

Carbaryl penetration into and metabolism by adult alfalfa leafcutting bees, Megachile pacifica (Panzer), was studied in relation to sex, age, exposure to piperonyl butoxide, and after feeding with chlorcyclizine, phenobarbital, or aminopyrine. Specifically the study included 1- and 4-day-old male bees and 4-day-old female bees representing LD₅₀ values of about 240, 51, and 262 µg/gm and carbaryl-piperonyl butoxide synergist ratio of 12, 53, and 15, respectively. Penetration rates/hour and percent penetrated were calculated for the first 8 hours after application. More carbaryl penetrated more rapidly into the most sensitive insects, but the differences were not statistically significant. Piperonyl butoxide, …

Proteolytic Enzymes Of Lactic Streptococci And Their Use In Improving Body And Texture Of Direct Acid Cottage Cheese, Gulamnabi Y. Vahora

Biology

Proteolytic activity of Streptococcus cremoris HP, P₂ and AM₂; Strept-ococcus lactis-C₂, ML₈ and a commercial mixed culture was determined in skimmilk and whey by measuring the increase in Absorbancy at 274.5 nm of a pH 4.6 soluble filtrate, following incubation in a 2.5% casein solution. Proteolytic activity, rate of acid production and growth rate decreased in order of C₂, HP, mixed culture, AM₂, ML₈ and P₂ at a regulated pH (6.1 - 6.2) and 32 C. Maximum proteolytic activity for all cultures was found during the stationary …

Contractions Of Rabbit Testes In Vitro: Permissive Role Of Prostaglandins For The Actions Of Calcium And Some Smooth-Muscle Stimulating Agents, James Lee Hargrove

Biology

The purpose of this paper is to explore the relationship among prostaglandins, calcium, epinephrine, serotonin, and acetylcholine. Prostaglandin E₂(PGE₂) initiated rhythmic contractions in rabbit testes in vitro. Inactive testes did not respond to calcium ion, acetylcholine, or serotonin; after contractions had been stimulated with PGE₂, all of these agents caused the capsule to contract. Epinephrine and histamine induced contractions in non-motile capsules without releasing prostaglandin-like material into the bathing medium. Exogenously administered PGE₂ potentiated histamine or epinephrine-induced testicular contractions. Calcium ion was required in the action of PGE₂ in a dose-dependent …

The Effect Of Salt Concentration, Aqueous Activity And Temperature On The Growth Of Three Bacteria, Girish C. Chokshi

Biology

The requirement of bacteria for water increases when temperature of growth deviates from the organism's optimum growth temperature. A psychrophilic organism was isolated from a meat sample stored at refrigerator temperature and shown to have an optimum temperature 17 C. Partial identification of the unknown meat isolate was also carried out using morphological and biochemical characteristics. A comparative study was carried out using a mesophile Staphylococcus aureus and a thermophile Bacillus stearothermophillus for requirements of free water at different temperature ranges. The organisms were grown in media of varying salt concentration at a wide range of growth temperatures (the meat …

Fine Structural Study Of The Early Endogenous Stages Of Eimeria Magna, Harry D. Danforth

Biology

The sporozoites and 1st, 2nd, and 3rd generation schizonts of Eimeria magna were studied. The tissue in which these stages were found was fixed Karnovsky's fixative, and post fixed in 2.5% osmium tetroxide. Some of the tissue was prestained with uranyl acetate and phosphotungstic acid before examination with the electron microscope. Intracellular sporozoites observed in 24-hr ligated intestine had fewer amylopectin granules, and more mitochondria than those fixed immediately after inoculation. One or two Golgi apparatuses were seen in close association with the nucleus. The inner membrane complex of the pellicle was still intact, and no indication of nuclear division …

So Deep A Logos, Veneta Nielsen

Faculty Honor Lectures

CelVantes, almost as if he would at all costs avoid the incredible fireworks of Chaucer's Dame Prudence as she counsels Melibee on justice, from a vast cascade of learning and proverbial wisdom, in his Prologue to Don Quixote, says "I am, moreover, extremely lazy when it comes to hunting up authors who will say for me what I am unable to say for myself. And if I am in a state of suspense and my thoughts are woolgathering, you will find a sufficient explanation in what I have just told you." Then his clever friend advises the use of "scraps …

Individualized Instruction And The Utah Secondary Business Instructor, Don R. Hender

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

Lloyd K. Bishop has stated that individualized instruction has been one of the most predominant themes in education for over a decade. Individualized instruction places as its central focus the welfare of the individual. All other elements are molded to facilitate the development of the individual.

One of the early outstanding presentations of this theme was that of Jean Jacques Rousseau in his immortal 'Emile'. The significance of the individual was one of the pervasive themes during the establishment of the United States of America. The welfare of the individual is one of the most prominent themes of government and …

1972 Progress Report: Soil As A Factor In Modelling The Phosphorus Cycle In The Desert Ecosystem, J. J. Jurinak, R. A. Griffin

Elusive Documents

The research conducted in 1972 emphasized a nutrient assay of soil from the Curlew Valley site, phosphorus inventory of the vegetation and rabbit droppings, and further chemical characterization of soil phosphorus, which also included determination of the kinetics and energetics of the calcium carbonate-phosphate system.

Distillation-Condensation Of Water And Nutrient Movement In A Desert Ecosystem, N. Stark

Memorandum

No abstract provided.

Decomposition And Mineralization In An Artemisia Tridentata Community In Northern Nevada, P. L. Comanor, D. C. Prusso

Memorandum

No abstract provided.

Proteolytic Activity Of Soil Microorganisms, Robert T. O'Brien

Memorandum

No abstract provided.

A Comparison Of Two Daily Energy Budget Models On Uinta Ground Squirrels (Spermophilus Armatus), Thomas E. Oldfield

Biology

Mean daily energy budgets calculated from the ADMR model for Spermophilus armatus were 45. 50 Kcal/ day for a 300 gm animal at 20°C. 2. Mean daily energy budgets calculated from the ecological model for Spermophilus armatus were 63.64 Kcal/day for a 300 gm animal at 20°C. 3. The daily energy budget calculated from the ecological model was 24.81% greater than the daily energy budget calculated from the ADMR model.

Cottonwood Recovers From Deer Browsing, R. M. Krinard

Aspen Bibliography

No abstract provided.

A Comparison Of A Math-Center And A Traditional Program In Mathematics With First Grade Pupils In The Roosevelt Elementary School, Barbara Jean Knecht Eldredge

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

The phone rang at the home of the principal the evening of the first day of school. The voice on the telephone said, "I must talk with you-- tonight!" The principal arranged an appointment for 7:30 that evening in his office at the school.

Noise Pollution As A Potential Safety And Health Hazard Within Selected Utah Industrial Education Laboratory Facilities, Carol E. Hicks

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The major purpose of this study was to investigate the existing noise conditions within industrial education woodworking and metalworking laboratories to determine whether these noise conditions were a problem as seen by the instructors and if in fact these noise conditions exceeded the standards set by the Occupational Safety and Health Act (OSHA). The study was conducted in three phases: (1) the assessment of the opinions of professional industrial educators towards noise as a pollutant; (2) an electronic instrument measurement of the actual noise exposure conditions that existed in a sampling of laboratories; and (3) the comparison between the opinions …

Labor Force Projections For The State Of Utah, 1970-2000, Craig R. Lundahl

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study deals with labor force projections for the State of Utah, counties and multi-county areas, by age and sex for the years 1980, 1990, and 2000, using the technique of cohort analysis for long-range labor force projections. The study also examines some social and economic implications of labor force projections for Utah.

The labor force projections were derived from the age and sex population projections being prepared for the State of Utah and Utah counties by Yun Kim and Therel R. Black, Utah State University.

In order to project the future labor force of Utah, an analysis of historic …

The Formation And Properties Of Machining Burrs, Laroux K. Gillespie

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The formation of burrs in Machining Operations occurs by three Basic Mechanisms:

1) Lateral Extrusion of material

2) Bending of the chip

3) Tearing of the chip form the workpiece

Each of these mechanisms has been studied analytically and compared to experimental results. The agreement between predictions and measurements has been found to be close.

Drilling, milling, grinding, and turning burrs were produced in 303Se stainless steel and their properties were related to tool geometry, feedrates, and depth of cut. One thousand measurements were made and subsequently analyzed by analysis of variance techniques. The properties measured include burr length and …

Mechanisms Of Population Regulation In Confined Colonies Of Peromyscus Maniculatus (Wagner) And The Response To Exploitation, Donna Corn Olsen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Wild-trapped and laboratory-reared Peromyscus maniculatus (Wagner) were raised as confined colonies indoors with various stocking densities ranging from 0.026 to 0.100 mice per sq. ft. in pens of 40, 77, and 154 sq. ft. The animals were individually tagged and all pens were censused at weekly or semi-monthly intervals to record animals present, body weights, food consumption, and overt reproductive condition. At the termination of each experiment, all mice were necropsied and organ weights of gonads and adrenals recorded. Histological sections were made of the testes and ovaries. Half the colonies were subjected to density-independent exploitation by removal of 50% …

Student Involvement In The Governance Of Institutions Of Higher Education And The Campus Unrest (A Study Of University And College Officers' Views Of Student Participation In Campus Governance), Elliot Alfred Chand

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Purpose

The purpose of this study was to determine the extent of student participation in various aspects of college and university governance in contrast to the extent to which selected administrative officers would allow them to participate.

Objectives of the Study

1. To determine what the opinion of the university officials is on the general scope of student involvement in university affairs and institutional governance.

2. To determine the extent to which students are and should be involved in areas of administration including general governance, as viewed by the officers included in this study.

3. To compare the latitude of …

Assassin And Hero: The Making Of Men A New Analysis Of The Attempted Assassination Of Theodore Roosevelt, Beverly Brown Grabow

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this paper is to explain the events leading to and events of the attempted assassination of Theodore Roosevelt in Milwaukee, Wisconsin, October 14, 1912. A comparison and contrast is made between information gained through the study of previously undiscovered primary sources and what has been accepted by and written about by historians. The background of the would-be-assassin and his motives in shooting Theodore Roosevelt have been investigated. The paper is divided into six major parts: Introduction, Nominating Conventions- -1912, Milwaukee, October-14, 1912, Elbert E. Martin, John F. Schrank and Conclusion.

Structural Geology Of The Northern Part Of Clarkston Mountain, Malad Range, Utah-Idaho, Steven Mark Burton

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The northern part of Clarkston Mountain, in northern Utah and southern Idaho, is located about 23 miles northwest of Logan, Utah. It extends across the Malad Range from Malad Valley on the west to Cache Valley on the east. The mapped area measures 4.8 miles in the north-south direction and 6.8 miles in the east-west direction.

The Brigham Formation of Cambrian age is the oldest exposed stratigraphic unit. It consists mainly of quartzite. Younger Cambrian units include the Langston, Ute, Blacksmith, Bloomington, Nounan, and St. Charles Formations. The Garden City Formation of Ordovician age is the youngest Paleozoic unit. The …

Field Measurements Of Photosynthesis And Leaf Growth Rates Of Three Alpine Plant Species, Douglas A. Johnson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Leaf photosynthetic measurements using a portable ¹⁴Co₂ field system were carried out and correlative leaf relative growth rates, RGR, were determined at different leaf positions of three alpine plant species throughout the growing season. Initially there was a period of high leaf RGR associated with a period of increasing photosynthetic activity. Following this stage was a long period of no net change in length of the living leaf. During this period, photosynthetic activity generally increased to a maximum level and then decreased steadily. The final ontogenetic stage was a period of negative leaf RGR denoting leaf senescence which …

The Relationship Of Climatic Factors To Grazing Activities Of Cows On Winter And Spring Ranges, Benton M. Smith

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this research was to investigate the effects of climatic variations upon the daily activities of grazing cattle. The activities of individual cows on a partially seeded salt desert shrub range were observed and recorded during three grazing periods. Two of the periods were during consecutive winters and the other during the spring. Climatic variations during the second winter period were quantified and compared to changes in the daily activity patterns of the cattle.

Distinctly different daily routines of cattle activities were evident for the winter and spring seasons. In the spring, the cattle grazed, traveled, and drank …

Studies On Some Bacteriolytic Bacteria Isolated From An Oxidation Pond, Paul Christian Radich

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

During bacteriological studies of the Logan City Sewage Oxidation Ponds, Logan, Utah, a group of bacteria was discovered which could lyse killed cells of Escherichia coli. The present research effort was an attempt to determine whether two isolates from this earlier study might play a role in the reduction of coliforms and other bacteria in the oxidation ponds. It was also desired to characterize partially the lytic enzymes produced by the two isolates and to determine as far as possible the organisms' identity.

Both isolates were Gram negative rod-shaped organisms with a single polar flagellum. On Cytophaga agar they …

Petrology And Regional Relationships Of The Ordovician Kinnikinic Formation And Equivalents, Central And Southern Idaho, William Calvin James

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Kinnikinic Formation of central Idaho is a sedimentary unit consisting principally of orthoquartzite. From its maximum measured thickness of 2285 feet in the central Lemhi Range near Gilmore, Idaho, it thins westward to 376 feet at the type section and southward to 326 feet near Arco, Idaho. Northeast of the Lemhi Range it occurs only as erosional remnants, due to pre-Devonian erosion. Both the lower and upper contacts of the Kinnikinic Formation are disconformable.

The Kinnikinic Formation is light colored, predominately fine to medium grained, thin to medium bedded, and largely cemented by silica overgrowths. Some metamorphic recrystallization has …

Environmental Criteria To Aid Developers In Site Evaluation For Small Scale Residential Developments In Cache County, Utah, Roger P. Fickes

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this paper is the preparation of environmental criteria to be used to aid future developers, county planning board, and county commissioners in the evaluation of sites for proposed small scale residential developments, and whether that development will have an irreparable environmental impact. The criteria are intended to fill the gap between standards for housing developments and finished design and that of environmental impact of small scale housing developments in Cache County, Utah.

A Follow-Up Study Of 1968-1972 Business Data Processing Graduates Of Two-Year Degree And Certificated Programs In The Two State Supported Technical Colleges Of Utah, Robert B. Jenkins

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

The junior, community, or vocational-technical college is evolving into one of the most important educational institutions in the United States. The Carnegie Commission said, "Occupational programs should be given the fullest support and status within community colleges. These programs need to be flexibly geared to the changing requirements of society." Today's business society is constantly changing and this change necessitates constant analysis, evaluation, and revision of educational training programs. According to Goddard:

The development and improvement of junior college business curricula should be based on careful evaluation of present curricular offerings in business and extensive research into the nature of …

Impact Of The Black-Tailed Jackrabbits (Lepus Californicus) On Vegetation In Curlew Valley, Northern Utah, Mark Westoby

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The interrelations of black-tailed jackrabbits and the desert-shrub vegetation on which they were feeding were studied in Curlew Valley, Northern Utah. The vegetation was described as a three-cornered continuum, the corners being types dominated respectively by Artemisia tridentata, Atriplex confertifolia, and Sarcobatus vermiculatus.

Jackrabbit diet was studied by microscopic analysis of plant fragments in stomachs from shot animals. The method was inaccurate, apparently because the ratio of identifiable tissues to all ingested tissues was very low, and varied between plant taxa, and seasonally. This problem seems intractable for desert shrub vegetation.

The diet was similar to that …