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Introductory Pages, Byu Studies

BYU Studies

No abstract provided.

Back Cover, Byu Studies

BYU Studies

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Full Issue, Byu Studies

BYU Studies

No abstract provided.

Ecological Investigations In Cercocarpus Ledifolius Nutt. Communities Of Utah, James Newton Davis

Theses and Dissertations

Cercocarpus ledifolius communities of Utah were sampled to determine which measured environmental characters were influential in determining community structure and dynamics. Nineteen, one-tenth acre stands were sampled by 25 equally spaced .25m2 quadrats. Plant frequency, cover, density, height, diameter, age, elevation, slope and exposure were determined for curl-leaf mahogany within the study area. Soil depth and soil samples were analyzed for texture, pH and soluble salts. Curl-leaf mahogany is found almost entirely on arid rocky slopes, canyon ledges, and plateaus at relatively high elevations on all exposures. The soils were invariably shallow and slightly acidic with sandy loam soils being …

Correlations Between Plant Species Diversity And Flower Characteristics In The Wasatch Mountains Of Utah And Idaho, William Kent Ostler

Theses and Dissertations

An analysis of the relative abundance of the prevalent species in 25 major plant communities of the Wasatch Mountains demonstrates that variation in species diversity is significantly correlated with many floral characteristics. Wind pollinated flowers decrease in abundance while animal pollinated flowers increase along the diversity gradient. Both relationships are highly significant statistically. Color diversity and species diversity are significantly and positively correlated in open communities but are not correlated in forest communities. The percent sum frequency of yellow and pink-magenta flowers decreased with increasing species diversity while blue and whitish flowers increased. Also, zygomorphic flowers and flowers in which …

The Acting Career Of Dean Jagger, Crae James Wilson

Theses and Dissertations

The purpose of this study is to follow the acting career of Dean Jagger through a list of theatrical productions, motion pictures, radio and television appearances. The study will also include a brief biography of his life and personal philosophies which contribute to the success of the actor and the person.

The study will follow an appraisal of personal interviews with Mr. Jagger and his wife, information gained from the "Dean Jagger Collection" located at Brigham Young University Manuscrips Library, and critical review and interviews with his fellow actors.

Modeling Studies Of Small Mammal Trapping Phenology, And Plant Succession In The Kaiparowits Region, Kane County, Utah, James A. Raines

Theses and Dissertations

This study makes use of simple statistical models which may be manipulated for projection of changes in the Kaiparowits Region of Southern Utah. A method of determining habitat preferences of small rodents from capture-recapture trapping data is proposed. It is suggested that some aspects of animal behavior regarding trapping may also be explained. Timing of flowering of Oryzopsis hymenoides and Hilaria jamesii as related to enviromental conditions was investigated, and models of the requisite conditions proposed. It is suggested that similar models may be used to describe the timing of other phenological events. Succession on disturbed sites is considered to …

Fixation Of Dormant Tilletia Teliospores For Thin Sectioning, John Scott Gardner

Theses and Dissertations

Dormant Tilletia caries teliospores in fixative solution or distilled water were frozen onto specimen chucks of an FTS Sorvall- Christensen frozen thin sectioner and cut or fractured at various temperatures (-20 to -75 C) and thickness settings (10, 15, 20, and 25 um). Cytoplasm of dormant spores was well preserved and organelles were found to differ from those of germinated spores in morphology. Irregular electron dense and electron opaque areas of lipid bodies were sometimes evident in dormant and germinating Tilletia caries teliospores. When dormant teliospores were sectioned in buffered fixative, lipids had an appearance similar to lipids in thin …

Differential Resource Utilization By The Sexes Of Dioecious Plants, Dwight Carl Freeman

Theses and Dissertations

The distribution of male and female plants was examined in five dioecious, wind pollinated species representing five plant families and two classes (gymnosperms and angiosperms). The arid to semiarid habitats occupied by these species in northern Utah were stratified for sampling into two categories: chronically xeric and seasonally moist. Results show that for all species, males prevail on xeric microsites, while females dominate the more moist parts of each local environment. Habitat partitioning between the sexes is a strategy that maximizes seedset of females and pollen dispersal of males; it also tends to minimize intraspecific competition between the sexes.

An Improved Fission Product Pressure Model For Use In The Venus-Ii Disassembly Code, Ray Leland Jensen

Theses and Dissertations

The world's growing need for safe, reliable, and long-term energy sources has intensified the research being conducted in the development of nuclear power. The operation of power reactors is contingent upon the continued availability of the fissile material required to maintain a critic a l reactor. The only naturally occuring fissile material is an isotope of uranium, U-235, which only accounts for 0.76 percent of the uranium that is mined. Due to the relative scarcity of this important fissile material it is estimated the United States' sources of economically recoverable fissile material will be delinquished with in about twenty-five years.^1

Steady-State Fluidics: Computer-Aided Analysis Of Analog Fluidic Circuits By Use Of Experimentally Determined Characteristic Curves, Raymond P. Martin Jr.

Theses and Dissertations

One of the fundamental tasks confronting engineers is the transmission and control of energy. The engineer, faced with this requirement and influenced by details of a specific, situation, his education and experience, and the customer's desires, will probably select a mechanical, electrical, or electro-mechanical system. Often a better choice exists—the use of a fluid power system. Fluid power systems employ pressurized fluids, liquids and/or gases, to transmit and control energy. Hydraulic systems use liquids, usually special oils or treated water. Pneumatic. systems use air or other gases. Both types are versatile and find a wide range of application.

Some Educational Aspects Of The Music Training Program Of The Church Of Jesus Christ Of Latter-Day Saints, 1935-1969, Grant L. Anderson

Theses and Dissertations

This study consisted of two parts: (a) an historical description of the music classes, divided into three time periods for comparison and explanation, and (b) an evaluation of the effort determined from questionnaire sampling of teachers, students and stake music leaders. Historically, music courses for beginning and advanced organists and conductors were organized and maintained by the General Music Committee of the Church, designed to improve musical attitudes and performance in religious services. Many thousands completed the short, comprehensive classes, which offered an opportunity to study and prepare for church music service.

Findings indicated that successful courses were given in …

A Revision Of The Genus Ranunculus (Ranunculaceae) For The State Of Utah, Margaret Doherty Palmieri

Theses and Dissertations

This study is a taxonomic revision of the genus Ranunculus for Utah. Twenty-five species and 4 varieties are recognized, and are separated by means of a comprehensive key. A list of pertinent synonyms and types, a morphological description, habitat preference and a discussion are presented for each species and variety. Distribution maps and photographs are included. The basis of this study has been morphological comparison of herbarium specimens and collections and observations by the author throughout Utah.

The Synthesis Of Analogs Of Toxoflavin And Fervenulin As Potential Antimetabolites, Bernadette Kuo Billings

Theses and Dissertations

The synthesis of analogs of toxoflavin: 1,3,4,6-tetramethyl-1,5,6, 7-tetrahydropyrimido[4,5-c]-5,7-pyridazinedione; 1,6-dimethyl-3,4-diphenyl-1,5,6,7-tetrahydropyrimido[4,5-c]-5,7-pyridazinedione; 3,5,7-trimethyl-8-phenyl-2,3,4,8-tetrahydropyrido[2,3-d]-2,4-pyrimidinedione are discussed. The synthesis of analogs of fervenulin: 3,4,6-trimethyl-5,6,7,8-tetrahydropyrimido[4,5-c]-5,7-pyridazinedione; 6-methyl-3,4-diphenyl-5,6,7,8-tetrahydropyrimido[4,5-c]-5,7-pyridazinedione; 2-hydroxy-3,5,7-trimethyl-4(3H)pyrido[2,3-d]-2,4-pyrimidinone are discussed. Several intermediates have been prepared: 6 -methylamino-3-methyluracil by a new method; 6-n-propylamino-3-methyluracil: 6-n-butylamino-3-methyluracil and 3-ethyl-2-ethylthio-2-hydroxy-4(3H)pyrimidinone.

The Incidence And Life Cycle Of Diplostomum Spathaceum In Utah, R. Scott Evans

Theses and Dissertations

Diplostomum spathaceum (Rudolfi 1819), (Diplostomidae) the fish eye fluke which causes the disease diplostomatosis, was reported in Utah by the Division of Wildlife Resources in 1974. Previous to this date diplostomatosis was suspected to occur in three reservoirs in the state. Diplostomatosis, whi.ch is due to the presence of the metacercarial stage of this parasite, causes cataracts of the lens. The incidence of the disease in Utah has generated public and academic concern.

Mormonism And Revolution In Latin America, Lamond Tullis

BYU Studies

No abstract provided.

“A Plainer Translation” Joseph Smith's Translation Of The Bible; A History And Commentary Robert J. Matthews, Richard P. Howard

BYU Studies

No abstract provided.

Letter To A Four-Year-Old Daughter, Linda Sillitoe

BYU Studies

No abstract provided.

Conflict And Compromise: The Mormons In Mid-Nineteenth-Century American Politics J. Keith Melville, Jan Shipps

BYU Studies

No abstract provided.

John Hyde, Junior—An Earlier View, Edward L. Hart

BYU Studies

No abstract provided.

Effect Of Supplemental Food On Population Estimates And Mortality Rates Of Desert Rodents In Utah, J. Steven Thiriot

Theses and Dissertations

The objective of this research is to assess the effects of various quantities of supplemental food (seed) on population estimates and mortality rates of desert rodents . The supplemental food is meant to stimulate natural vegetational productivity. If food availability significantly affects the population parameters methods of population estimators previously used may be in error. Hopefully this study will aid small mannnal research by designating whether, in part, population estimates and mortality rates are in error because of high vegetational productivity. The hypothesis of this study is that supplemental food in the natural environment decreases population estimates and mortality rates …

Influence Of A Dry Wash Habitat On Distribution And Movement Of Heteromyid Rodents, Jeffrey S. Green

Theses and Dissertations

Three heteromyid rodent species were studied in relation to a large dry wash in Millard County, Utah, during the summer, 1974. Data were gathered with three trapping grids and analyzed to determine if the dry wash influenced rodent movement and distribution patterns. Dipodomys ordii and Dipodomys microps were distributed non-randomly in the dry wash and adjacent habitat, but Perognathus Zongimembris seemed to be randomly distributed. Dipodomys ordii was significantly correlated with wash habitat, but D. microps was found most frequently in upland areas. Soil and vegetative differences and competition were possible causes for the observed distribution. The wash was observed …

Vegetational Response To Three Environmental Gradients In A Salt Playa Near Goshen, Utah County, Utah, Michael Grant Skougard

Theses and Dissertations

The plant communities and individual plant species in and around a salt playa near Goshen, Utah County, Utah were studied in relation to three environmental gradients. Forty-eight stands were sampled by means of meter square gradients. Frequency data for all participating plant species were taken. Soil samples were collected from each site and analyzed to establish the environmental gradients (i.e., total soluble salts, soil moisture and hydrogen ion concentration. Results indicate that community vegetation types respond differentially to the three gradients and can be segregated on the basis of one or more of the gradients. The total soluble salts gradient …

New Records And Species Of Tetranychidae And Tenuipalpidae (Acarina) From Utah And Idaho, Donald M. Tuttle, Edward W. Baker

Great Basin Naturalist

Twenty-three species of spider mites (Tetranychidae) are recognized for Utah and Idaho; three of these are described as new: Bryobia neoribis, Pseudobryobia knowltoni, and Schizotetranychus agropyron. Eleven species of Tenuipalpidae are recorded.

The Pattern Of Esterase Variation In The Mimulus Glabratus Complex (Scrophulariaceae), Sun Szen Hsu, Robert K. Vickery Jr.

Great Basin Naturalist

Disc gel electrophoretic assays of Mimulus plants showed young stems to contain at least 15 esterase bands. The 6 bands in the center of the gels were highly reproducible. Eighty-one populations representative of all the cytotaxonomic groups and of the Western Hemisphere geographic range of the Mimulus glabratus complex were assayed for those 6 bands. There was no apparent correlation between the distribution of the esterase bands and important environmental parameters such as elevation and latitude. Hence, their distribution did not appear to reflect environmental adaptive values. Each population was monophonic for its particular combination and intensity of esterase bands …

Opportunistic Feeding In Sceloporus Horridus From Jalisco, Mexico, Philip A. Medica, Rudolf G. Arndt

Great Basin Naturalist

Based on a sample of 17 adult specimens of Sceloporus horridus taken near Autlan, Jalisco, Mexico in May 1974 just before and just after the first rainfall of the year, we present the first published data on the food habits of this lizard. Important prey item taxa were Homoptera, Coleoptera, Hymenoptera, Orthoptera, and Isoptera. The absence of Homoptera and Orthoptera, and the concomitant greater relative importance of Isoptera and Hymenoptera in the diet after the rain than before indicates opportunistic feeding by S. horridus. Our data suggest that reproduction in this lizard is probably initiated soon after the first rains …

Correction For: Carl E. Bock And Larry W. Lepthien, Distribution And Abundance Of The Black-Billed Magpie (Pica Pica) In North America. Great Basin Naturalist 35(3):269–272

Great Basin Naturalist

No abstract provided.

Front Matter, Vol. 36 No. 1

Great Basin Naturalist

No abstract provided.

End Matter, Vol. 36 No. 1

Great Basin Naturalist

No abstract provided.

Full Issue, Vol. 36 No. 1

Great Basin Naturalist

No abstract provided.