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Life Cycles Of Three Species Of Eimeria From The Uinta Ground Squirrel, Spermophilus Armatus, Kenneth S. Todd Jr.

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A study of the coccidia of the Uinta ground squirrel, Spermophilus (Citellus) armatus, was undertaken to determine the incidence of coccidia in a population of these ground squirrels, the life cycle and pathogenicity of the coccidia, and the host specificity of certain of the species of coccidia found in this and five other species of ground squirrels (S. richardsoni, S. variegatus, S. lateralis, S. columbianus, and S. beecheyi).

Uinta ground squirrels were live trapped and their feces examined to determine the incidence of coccidian infection. Specimens of S. armatus were maintained in the laboratory and given a pure inoculum of …

The Influence Of Hot Brine On The Calcium Content, Score, And Physical Properties Of Low-Fat, Cheddar-Like Cheese, Robert V. Ogden

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Two factors that are important in the production of the typical body and texture of cheddar cheese are acid development and milk fat content. When either of these is absent or present in less-than-normal amounts, the resulting cheese shows marked defects of curdiness and firmness.

When acid development in a vat of cheese is arrested, it is referred to as a "dead" vat. The cheese from this vat may be salvaged by use of the hot brine method of treatment. Hot brine treated cheese, although lacking the desired acid development, is a reasonably acceptable product, having the desired characteristics of …

Heat Denaturation Of Serum Proteins In Skimmilk And Whey As Measured By The Harland-Ashworth Test, Lynn Verl Ogden

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Milk serum proteins have been shown by other workers to be partially protected from heat denaturation by the presence of milk solids (8, 15, 16) and whole caseinate (14). This study revealed that some serum proteins (B-lactoglobulin), as shown by the Harland-Ashworth test (14, 17), were more readily denatured in skimmilk than in rennet whey. A comparison of the heat denaturation rate of serum proteins in whey as opposed to those in whey containing 2.5 percent isoelectric casein was also studied. A striking protection of serum proteins seemed apparent in the presence of isoelectric casein. However, it was learned that …

The Biosynthesis Of Aminolevulinic Acid In Relation To Iron And Enzyme, Daniel Ming-Yi Teng

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The survey of plant species for aminolevalinic acid synthetase (ALAS) source was conducted. Under the conditions of this study, spinach leaves were found to be a good source of ALAS activity. The amount of amino levulinic acid (ALA) synthesized by the plant extracts was very small and was rapidly metabolized to porphyrins. ALA and porphyrin synthesis was found to be confined to the particulate fractions. Rupturing of the particles with ultrasonifier enhanced the penetration of succinyl-CoA and increased the activity. Direct study of the ALAS activity was enabled by the utilization of C¹⁴-compounds to the isolation by column …

Alkali Liberated Phenolic Acids From Alfalfa, Leslie Huey-Seng Huang

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Fourteen compounds were isolated from an alkaline hydrolyzed extract of alfalfa leaves by using cellulose thin layer plates. The R_f values, fluorescent characteristics, and color reactions were given for all the compounds isolated.

Eight of these were identified as trans-ferulic acid, trans-p-coumaric acid, trans-caffeic acid, o-coumaric acid, tricin, syringic acid, cis-ferulic acid and cis-p-coumaric acid. The identity of the compounds was confirmed by comparison of the R_f values on thin layer chromatograms, fluorescent characteristics under ultraviolet light, and color reactions of spray reagents with those of authentic samples. Three of …

Control Of Behavior Through Reinforcement Menus, Gary Lyndle Holt

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Reinforcement menus were used to change response probabilities while maintaining control over two ''trainable," female, mentally retarded children.

An empirically determined reinforcement menu representing high probability behaviors, five for S₁ and four for S₂, was used in a contingency management system. Instructions were given concerning the contingencies for obtaining reinforcement. Subjects were allowed the opportunity to engage in a high probability behavior only after successful completion of fixed units of reading or arithmetic tasks. After stable performance was established, four additional menus were prepared to approximate in increasing degree, low probability behavior. Measurements were taken of task …

The Content Of Preschool Children's Original Stories, Danae Elaine Dana

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The early years of childhood are characterized by new ideas; experimentation; the building of relationships; fears, both real and imagined; and play, through which the child tries to assemble these experiences into a meaningful whole. The early years are an exciting, complex and vibrant time of learning while the child grows in his understanding of himself and the world around him.

The Preschool Child's Concept Of God, Linda Thompson Saxton

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The setting is a cheerful nursery school room bustling with activity and lively three and four year old children. Sally, Tom, and Dick are building with blocks and are busily engaged in conversation regarding who is "boss" of the project.

"I'm the boss," states Sally emphatically.

''No, I'm the boss." retorts Dick with just as much enthusiasm.

"Did you know that God is boss of the whole world?" questions Tom thoughtfully. So we see one more example of the tremendous task of reaching for and of gathering in facts and experiences in the environment in order to create some semblance …

A History And Economic Analysis Of The Hyrum Reclamation Project, Douglas Eldon Brinley

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Reclamation Ac t of 1902 was sign ed into law under the hand of President Theodore Roosevelt on June 17 of that year, culminating years of efforts to involve the federal government in reclamation projects. Prior to this Congress had enacted a variety of land laws designed to encourage private enterprise to develop the land and water resources of the nation, but had resisted using federal funds to construct reclamation works. The early land laws, however, served only as a temporary satisfaction to Western settlers, and Congress finally yielded to the pressure for assistance.

The Course Or Behavior Of Applied Zinc To Soil Containing Different Levels Of Freshly Applied Organic Matter, Artnel Samuel Henry

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Soil organic matter consists of a heterogenous mixture of plant, animal, and microbial material in various stages of decomposition. It possesses characteristics which at present are not very well known. Careful studies have been directed towards the behavior of organic matter as it affects plants directly and man indirectly. Consequently, much tire is devoted to its study from the point of metal inactivation and chelation, the earlier investigations failed to produce results worthy of the efforts expended, so a loss of interest in the continued pursuit of knowledge resulted, about two decades ago when it was learned that many polyvalent …

Saponin Content And Some Pod And Blossom Characteristics Of Alfalfa As Related To Seed Infestation By The Alfalfa Seed Chalcid, Ronald D. Morse

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The alfalfa seed chalcid, Bruchophagus ruddi Guss., is a jet-black hymenopteran wasp. The destructive nature of this pest has been recognized since the latter part of the nineteenth century. Every year thousands of acres of alfalfa seed are destroyed, with infestation reaching as high as 8 5 percent in some areas. In Utah the chalcid annually ruins from 5 to 25 percent of the alfalfa seed. Much of this damage goes unnoticed, as infested seed is commonly blown out in the trash during harvesting and cleaning operations . The extent of damage is not restricted to the United States. Wherever …

A Program For Hospitalized Children, Leslie Joan Bishop

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

When children are hospitalized they are exposed to an unfamiliar and frequently forboding world of an efficiently run institution. They cannot, as adults do, afford to interrupt (Plant, 1962) their normal way of living and exclude the relationships, play and learning that contribute to their overall growth.

There is a general tendency for children to be treated much in the same manner that adults are when they are confined in a hospital situation. The adult (Chapman, 1956) is prepared to make this temporary adjustment because he is aware, to some extent, of the need for hospitalization and the positive consequence …

The Influence Of Organic Matter And Ph On Transformations Of Nitrites To Elemental Nitrogen, Mohammad A. Rashid

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Nitrogen occupies an important and prominent place in plant and animal nutrition. Large quantities are required by plants and must be available in the soil. Recently the use of nitrogenous fertilizers has increased manyfold. In view of the importance of this element in crop production, even greater use is anticipated in the coming years. In order to make full use of the applied nitrogen, continued investigations of soil-nitrogen relationship are imperative; however, this element presents many complex and challenging problems to investigators.

Immunity To Ostertagiasis In Calves, Leo F. Lejambre

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Parasites are responsible for heavy economic loss to the livestock industry. The losses in cattle due to parasitism can only be roughly estimated, since many cattle do not die or become visibly sick. However, there are more subtle losses such as reduced growth rate, and decreased meat and milk production (Levine, 1961). In 1954 the U. S. Department of Agriculture published an estimate of the losses in agriculture over the 10 year period, 1942-1951. At that time, the best judgement of specialists in the Department of Agriculture placed the annual loss to parasitism in cattle at $19,026,000 of which $8,989,000 …

Gonadotropic Hormone Activity In Blood And Placental Tissue Of The Bovine Early In Gestation, John E. Lunnen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Certain mammalian species have been shown to secrete extra-pituitary gonadotropins. In humans the chorionic cells of the placenta secrete a gonadotropin and in pregnant mares such a hormone is secreted by the endometrial cups. Gonadotropins of placental origin have also been observed in the rat.

Susceptibility Of Selected Alfalfa Clones To Lygus Bugs In Relationship To Seed Production, Charles G. Summers

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Utah ranks as one of the major producers of alfalfa seed in the nation. In 1964, 6.02 million pounds of cleaned seed were produced in the state. This resulted in an income of 1.7 million dollars to Utah seed producers for that year (Agricultural Statistics, 1965).

A Study Of The Factors Influencing The Synthesis Of Tobacco Mosaic Viral Rna In A Partially Purified Synthesizing System, Agnes P. Fok

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Research on biosynthesis of tobacco mosaic virus (TMV) ribonucleic acid (RNA) in vitro has been reported by Cochran, et al; Karasek and Schramm; Kim and Wildman; Cornuet and Astier; and Tongur and Baland in. It has been postulated that the replication of a number of viruses containing single-stranded RNA is accompanied by the formation of a virus-specific double-stranded helical RNA, the replicative form. This has been demonstrated both for animal and bacterial viruses including MS2. The double helical structure of purified replicative form of MS2 was established by X-ray diffraction studies. One of the strands was shown to be a …

The Initiation Of Infection By Dna From Bacteriophage Lambda, Gerald D. Elseth

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Deoxyribonucleic acid isolated from bacteriophage λ can infect Escherichia coli K12 in the presence of adsorbed helper phage (Kaiser and Hogness, 1960; Kaiser, 1962). The manner in which λ DNA enters the cell and the possible role of helper phage in the penetration process is still not clear. Kinetic studies conducted in this laboratory during the initial stages of infection by λ DNA demonstrate a requirement for helper function during the penetration of an infectious molecule. Further investigation into this problem is needed and was the major objective of this study.

A Two Year Course Outline In Quantity Foods For Intermountain High School Girls, June C. Larson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Bureau of Indian Affairs has recently completed or is now in the process of building 19 new grade schools on the Navajo reservation. Some of these schools are boarding schools, and some are day schools, but each new school needs school lunch personnel. To meet this need intermountain School added to their curriculum a course in Quantity Foods to be given to Junior and Senior High School girls as a two year vocation. This necessitated the development of a 2 year course outline for the 2 year Quantity Food class, which gave the girls 4 hours daily practical training …

Neutral 17-Ketosteroid And 17, 21-Dihydroxy-20-Ketosteroid Excretion In Urine Of University Women During The Menstrual Cycle, Shao Shen Yam

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In the last few years, much research has been done on lipid metabolism because of the possible involvement of lipids in atherosclerosis and coronary heart disease. These diseases appear to be related to abnormalities in lipid metabolism. Since sex differences have been noted in lipid metabolism, the role of steroid hormones has been under investigation in a number of laboratories. Coronary heart disease occurs only rarely in women during the reproductive phase. In men, the administration of estrogens results in a decreased serum cholesterol level while androgens tend to increase circulating cholesterol.

Experiments on rats and chickens have indicated that …

Cholesterol Levels In Serum And 5Β – Pregnane – 3Α,20Α - Diol In Urine Of University Students, Gertrude Kuei-Shu Chiang

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Since there is a high incidence of coronary heart disease in humans of middle-age and older in the United States, and the mortality of this disease is still increasing, a great deal of research has been done in this field. Although many theories have been formulated concerning the cause of atherosclerosis, it is a very complex disease, and appears to be influenced by many factors. Disturbed lipid metabolism is widely believed to be involved in the development of the vascular lesions found in arteriosclerosis, although the nature and origin of the disturbance is unknown. The mechanism for the elevation of …

A Study Of The Function Of Visual Imagery, Type Of Mediator, And Associative Frequency In Induced Mediation Paradigms, Ted Christiansen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Bugelski and Sharlock (1952) credit McGeoch with saying that although the concept of mediation was an old one, it had generated more discussion than experimentation. Bugelski and Sharlock in commenting on McGeoch's statements had this to say, "The concept of mediation is of great potential value for the psychological analysis of learning, thinking, and insight." (Bugelski and Sharlock, 1952, p. 334) The views of Bugelski and Sharlock represent the current thinking in verbal learning circles relevant to the importance of mediation in symbolic forms of behavior. The experimental emphasis, at the present time, is upon the conditions underlying the process. …

A Historical Survey Of The Economic Development Of Mainland China, 1949-1962, Mandhatasinh A. Chauhan

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Chinese agriculture differs from the Western agriculture in the development and utilization of agricultural science on the fields. China has always been an agricultural country, but she failed to improve in techniques of cultivation as the time passed by. The land, prior to the Communist take-over, was owned and cultivated by individuals and the produce was sold in a free-market. Unfortunately, the Chinese government, prior to 1949, failed to bring about adequate agricultural reforms and implement economic development measures.

As a result an overwhelming proportion of the population of China is occupied on the land, the supply of which is …

Simultaneous Flow Of Heat And Water In Plant Tissue, Gaylon Sanford Campbell

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Although biological phenomena may be partially described in a general way without the use of mathematics and physics, the experimental results may be more meaningful if they are analyzed on the basis of physical and mathematical laws. The complexity of biological systems has made the application to them of mathematics and physics rather difficult, and only recently has much progress been made. Although it has yet been possible to describe only a few simple biological systems by actual equations, a great deal of qualitative information may be obtained by applying physics and mathematics. Russell (1960, p. 439) said

In principle …

Movement Of Phosphorus In Soils As Influenced By Chelates And Soil Types, Abd-Elmonem Sayed-Ahmad Mostafa

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The problems of phosphate fertilization have attracted the attention of agronomists, nutritionists, and other biological scientists due to the importance of phosphorus in animal and plant nutrition. However, the fundamental behavior of phosphorus in soil systems is not well understood. Because of its far-reaching effects, a solution of a portion of this problem is of importance.

The Complex Formation Of Silver Ion With Ribonucleic Acid, Guanosine, Inosine And Related Compounds And Peroxidase-Like Activity Of A Haemundecapeptide Prepared From Horse Heart Cytochrome C, José Angel Reinosa

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The importance of nucleic acids in plant and animal cells as carriers of genetic information and as protein biosynthesis agents is well recognized. It is also known that nucleic acid is a component of all viruses.

Takahashi (45) and Fraenkel-Conrat (16) demonstrated that the protein component of tobacco mosaic virus is non-infectious to the host plant, although it is identical to the original virus morphologically. The virus ribonucleic acid (RNA) alone was infectious, however.

Deoxyribonucleic acid (DNA), which is present in chromosomes, displays a very specific function. The chromosome long has been accepted as the carrier of the hereditary unit, …

Navajo Student Food Preferences, Kathlyn L. Coffman

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Adapt -- “to make suitable to requirements; adjust or modify fittingly." Adaptability is a trait which has been attributed to Navajo Indians by anthropologists, educators, novelists, psychologists, artists -- in fact, by almost everyone who has had dealings with them over a period of time. Yet, to identify specific examples of their adaptability and the attempt to measure the effect upon interpersonal relations of evidences of adaptation has proved to be no easy task.

Studies On Amino Acid Balance In Three Fish Meals, Krachang Wisutharom

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

High levels of fish mean cannot be used in chick diets in the United States because of the relatively high cost as compared to soybean meal. In certain areas or countries where large amounts of fish meal are produced, it may be economically feasible to use fish meal as the major protein supplement in the poultry rations.

Feed consumed by poultry must provide most of the materials the birds need for growth or to produce eggs. Those who formulate feed must select ingredients and combine them in proportions which will allow the bird to grow or produce eggs at the …

The Economic Value Of Forage For Livestock On Public And Private Ranges In Utah, Mardell D. Topham

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The United States Government controls about 359 million acres of land in the 11 Western States. This vast acreage produces recreation for vacationers, timber for lumbermen, water for city and rural consumption, forage for livestock and wildlife, and minerals for miners. In many cases, the users of these products are competing and are clamoring for a large share of this land. Consequently, land use is continually changing. Since 1941, the amount of timber cut has tripled, recreation has doubled, watersheds now yield a better quality of water (Clawson, 1957), forage for wildlife has increased but forage for livestock use has …

A Cytological Study Of Certain Life Cycle Stage Of Eimeria Bovis, John V. Ernst

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Although much research has been done on the bovine coccidia little has been reported on the cytological nature of the different stages. Few descriptions of cytoplasmic structures occur in the literature. Because of the impermeability of the oocyst wall a definitive study of the nucleus in the unsporulated oocyst has not been made, nor have the nuclear changes during the two successive divisions which occur during the process of sporulation been described.