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Growth-Form Analysis And Paleoecology Of The Corals Of The Late Ordovician Through Mid-Silurian Fish Haven And Laketown Formations, Bear River Range, North-Central Utah, Thomas B. Rich

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Morphology of corals of the Late Ordovician through mid-Silurian Fish Haven and Laketown Formations were analyzed to document adaptations to inferred enviromental conditions, i.e., (bathymetry, illumination, sedimentation, currents, and energy), under which their enclosing sediment was deposited. Specimens and data were collected from six sites. Insoluble-residue tests were performed on the corals' matrices.

Individual corallites of radial-lensoidal corals radiate in all directions. Vertical growth, however, was restricted in turbulent conditions. Umbrellic, radial-lensoidal corals feature downward facing corallites, considered to be an adaptation to a well illuminated environment.

On tabular lensoidal corals, constituent corallites faces exclusively upward, an orientation needed under …

Comparison Of Toxicological Models For Evaluation Of Air Pollutants: Response Of The Pulmonary Alveolar Macrophage To Hexavalent Chromium, Jennifer Baker Galvin

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study was designed to accomplish two primary objectives: (1) to compare two test methods commonly used to evaluate toxicity of inhaled air pollutants, and (2) to observe the response as measured by each of the methods, of pulmonary alveolar macrophages exposed to 2μg hexavalent chromium.

The first method evaluated featured use of intratracheal injections to simulate live inhalation exposures, and the second required exposure of macrophages cultured on petri plates. Pulmonary alveolar macrophages harvested from Long Evans rats were used. The two cell function parameters measured in the evaluations were chemiluminescence and oxygen consumption (which was determined for cells …

An Economic Analysis Of Farm Flock Sheep Production In Utah, Ken Beck

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to evaluate the economic aspects of farm flock sheep production in Utah. Using 1979 as a base year, costs and returns were calculated from data obtained from twenty- six Utah farms. Characteristics that typify the states· farm flock sheep production, at this writing, with regard to: 1) the farm flock producers and 2) the farm flock enterprise, were presented.

Various models were dev eloped and examined using Multiple Regression and Linear Programming analytical techniques. Multiple Regression was us ed to estimate the effects that different variables had on the profitability of the sheep enterprise. …

Effect Of Rain Leaching On Chemical Composition Of Alfalfa Hay, Mercedes M. Garcia De Hernandez

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Yield and chemical changes of second-cutting alfalfa hay treated with artificial rain were determined in a 2 x 3 x 2 factorial experiment. Factors were 2 stages of maturity (1 = late vegetative; 2 = early bloom), 3 levels of artificial rain applied (1 = no rain; 2 =low or approximately 5 mm; 3 = high or approximately 20 mm), and 2 times of applying artificial rain (1 = when drying forage was 40-60% dry matter; 2 = when drying forage was 60-75% dry matter). Thirty samples of alfalfa were collected at the 2 stages of maturity when the alfalfa …

Alterations In Rat Brain Norepinephrine And Dopamine Levels And Synthesis Rates In Response To Five Neurotoxic Chemicals: Acrylamide, 2,5-Hexanedione, Tri-O-Tolyl Phosphate, Leptophos, And Methyl Mercuric Chloride, Charles N. Aldous

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Acrylamide, 2,5-hexanedione, Tri-o-tolyl phosphate and leptophos belong to three fundamentally different chemical classes but all four chemicals cause central-peripheral distal axonopathy. Some of these compounds have been shown to alter brain steady state levels of neurotransmitters or to inhibit the activities of adenosine triphosphatases which are involved in the uptake and storage of biogenic amines. Tests were performed to determine alterations in steady state levels of rat brain norepinephrine and dopamine in response to doses of the above chemicals and of the central nervous system toxin, methyl mercuric chloride sufficient to cause ataxia. Catecholamine synthesis rate constant estimations were performed. …

Effect Of Toxaphene On Collagen Synthesis In Fish Tissue: Organ Culture Studies And Prolyl Hydroxylase Activity Assay, Charles Franklin Luke

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Toxaphene is reported to cause defects in the collagen of fish. Chronic exposure to toxhaphene weakens the backbone of fish by decreasing the amount of collagen and usually increasing the amount of calcium in the bone which results in a more brittle and fragile bone.

We investigated the possible direct action of toxaphene on collagen synthesis by exposing vertebral and swim bladder organ cultures obtained from unexposed rainbow trout (Salmo gairdneri) fingerlings to the same lot of toxaphene found to cause this defect in vivio. Collagen produced by these organ cultures was measured by: (1) total ^{3 …}

The Economic Impact Of Potential Changes In Federal Grazing Policies On Ranchers In Wayne County, Utah, Kib Elden Jacobson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to select an area in Utah that was predominantly livestock oriented which used federal lands for livestock grazing, and to develop model ranches exemplifying the typical live-stock operation in the area. These model ranches were then used in a Budget Generator Program (BG) and a Linear Programming framework (LP) to simulate reductions of 25%, 50%, 75% and 100% reductions of BLM land usage. The results were then used to determine income changes, herd size changes, and resource usage in the models as the reductions took place.

The area chosen was Wayne County, Utah because …

An Economic Analysis Of The Akkar Plain Project, E. Douglas Chard

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this paper is to determine the economic feasibility of the Akkar Plain Agricultural Development Project. Data were collected at representative villages throughout the Akkar Plain in Syria. The data were used to establish the economic setting at the present time on the Akkar Plain and to establish a basis for determining the economic justification for the future planned developments. Methodology used was a farm budget analysis of a before development and after development situation. Internal rate of return and benefit/cost ratio were the measures used to determine economic feasibility. The paper discusses previous work completed, the development …

Influence Of Lipophilicity On The Accumulation And Distribution Of Halogenated Phenols And A Pyridinol As Metabolites Of Pesticides In The Rat, Assed A. Attumi

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Exposure to halogenated phenols and pyridinols is of increasing concern because of their wide use and distribution. This research was initiated to determine the distribution, accumulation, and depletion of a group of halogenated phenols and a pyridinol in selected tissues of male weanling rats at different time intervals following a single oral dose of 0.33 or 1.66 m moles per kg body weight. The halogenated phenols and pyridinol were distributed differently in every tissue sampled following their administration, even though the amount administered was the same in each case. The concentrations in tissue were found in the order: 2,4,5-trichlorophenol > 4-bromo-2,5-dichlorophenol …

Biphenyl Hydroxylation By Vole Hepatic Microsomes, Moheb H. Makary

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Metabolism of biphenyl by meadow voles (Microtus montanus) liver microsomes was studied by gas liquid chromatography. The microsomal biphenyl hydroxylation of Swiss Webster mice (outbred) was also investigated to provide a species comparison. 4-hydroxybiphenyl (major metabolite), 3-hydroxy biphenyl (minor) and smaller amounts of 2-hydroxybiphenyl were identified as metabolites of biphenyl incubated with vole liver microsomes. Liver microsomes from Swiss mice formed 4-hydroxy biphenyl (major metabolite) and almost equal amounts of 2- and 3-hydroxy biphenyl (minor metabolite). The amount of the hydroxy biphenyls formed by vole liver microsomes was considerably less per milligram of microsomal protein than for mice. …

An Economic Analysis Of Prairie Dog Control, Alan Robert Collins

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Prairie dog control was found to be economically feasible on the Conata basin in South Dakota with future annual maintenance control to prevent re-invasions. The large difference between the present net worth values of the two viewpoints ($2587 for the U.S. Forest Service acting as an agent of the sovereign and $109,011 for the ranchers) was due to the added costs of environmental considerations included in the U.S. Forest Service control program, but assumed not to be included in control by ranchers. In order for prairie dog control to remain economically feasible, annual maintenance control for the U.S. Forest Service …

The Transport And Intracellular Distribution Of Iron In The Basidiomycete, Ustilago Sphaerogena, Charles W. Passavant

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The transport and intracellular distribution of iron in Ustilago sphaerogena via the native siderochrome ferrichrome A has been examined. Evidence is presented which suggests the involvement of deferriferrichrome in iron transport when the metal is supplied to the cell as ferrichrome A. This process requires both oxygen and ATP synthesis and may require a transmembrane electrochemical gradient. Once inside the cell, iron derived from ferrichrome A is rapidly distributed, with a major fraction found in the mitochondria, presumably as heme.

The kinetics of ferrichrome and ferrichrome A uptake have also been investigated. The Km of transport of ferrichrome was …

On Being Human: The Folklore Of Mormon Missionaries, William A. Wilson

Faculty Honor Lectures

Not long ago I was asked to entertain some of my colleagues at a faculty gathering by telling stories about J . Golden Kimball, that crusty old Mormon divine who salted his sermons and public statements with a liberal sprinkling of cuss words and earthy metaphors. Because I know a fair number of these stories and enjoy telling them, I agreed. The event was a tolerable success. At least most people laughed, and no one threw brickbats. Still, as I drove home, I wondered if I had not done more harm than good. I had, I feared, simply strengthened the …

Utah Science Vol. 42 No. 1, Spring 1981

Utah Science

1 INTRODUCTION Stanford Cazier

2 INTERNATIONAL PROGRAMS AT USU (1915-1981) N. Keith Roberts USU's commitment to helping less affluent peoples help themselves began in 1915. Over the years. that commitment has led to Increasingly diversified but consistently useful work

6 WHO BENEFITS FROM INTERNATIONAL PROGRAMS? E. Boyd Wennergren Altruism has a noble sound to It. but practical considerations often keep us from embracing the philosophy. Economical data. however. prove that when we go to less developed countries to fight world hunger. we gain measurable benefits for ourselves

10 DEVELOPMENT ECONOMICS N. Keith Roberts and Morris D. Whitaker Valid. long-range cost/benefit …

On Being Human: The Folklore Of Mormon Missionaries, William A. Wilson

All USU Press Publications

No abstract provided.

Stand Characteristics Of Rocky Mountain Aspen, Wayne D. Shepperd

Aspen Bibliography

No abstract provided.

Background To Historic And Prehistoric Resources Of The East Mojave Desert Region, U.S. Bureau Of Land Management

All U.S. Government Documents (Utah Regional Depository)

historic and prehistoric resources of the east mojave desert region

Potential Ecological Impacts Of Snowpack Augmentation In The Uinta Mountains, Utah, U.S. Bureau Of Reclamation

All U.S. Government Documents (Utah Regional Depository)

Results of studies on the impacts of late-lying snow on four ecosystems are reported: lodgepole pine; spruce fir forests, subalpine meadow; and alpine herbland.

Mountain Valley Planning Area, Rangeland Program Summary, United States Bureau Of Land Management

All U.S. Government Documents (Utah Regional Depository)

The Bureau of Land Management (BLM) intends to implement an improved rangeland program in the Mountain Valley Planning Area of central Utah. The program will be initiated during a five year period and will be followed by periodic updates. The program's benefits include improved watershed conditions through increased vegetation cover which will consequently reduce erosion. There will be an increase in the amount of rangeland in good condition and a decrease in the amount in poor condition. The rangeland's capacity ot sustain grazing by livestock and big game will also be increased. Wildlife habitat will be maintained or improved throughout …

Selected Biological Characteristics Of Streams In The Southeastern Uinta Basin, Utah And Colorado, United States Geological Survey

All U.S. Government Documents (Utah Regional Depository)

Biological sampling was carried out during 1976-78 in five streams in the southeastern Uinta Basin, Utah and Colorado, in order to provide baseline water-quality data for an area of potential oil-shale development. The biological activity in the streams sampled generally is limited by physical factors more so than by chemical constituents and plant nutrients. Characteristics of streamflow, such as high turbidity, fluctuating water levels, and moderate to high salinity, limit production of flora and fauna biomass.

Wild Ungulate Forage Requirements -- A Review, United States Bureau Of Land Management

All U.S. Government Documents (Utah Regional Depository)

This report discusses the nutritional and intake requirements of the major big game ungulates of North America. Forage intake rates for the various species are detailed, and major factors governing intake rates are discussed. The importance of forage nutritional value as much as quantity is emphasized, and both biotic and abiotic factors influencing forage quality are presented. Methods of forage protection and improvement are briefly defined.

A Feasibility Study Of The Biological Effects Of Fallout On People In Utah, Nevada, And Arizona, United States Department Of Health And Human Services, Bureau Of Radiological Health

All U.S. Government Documents (Utah Regional Depository)

This is the final report of the analysis of the Utah, Nevada, and Arizona Thyroid Feasibility Study. The report is divided into four sections: (1) Introduction and background; (2) Analysis of Linkage Study with the Utah Cancer Registry and Rocky Mountain Cancer Data System; (3) Evaluation of Tracing a Sample of the Original Utah, Nevada, and Arizona Study Groups; and (4) Options for Future Studies.

Buzzer 1981, Utah State University

USU Buzzer Yearbook

1981 yearbook for Utah State University. Published from 1909-1971 with single issues in 1978 and 1981.

First Year Final Report: The Ecology Of The Desert Bighorn Sheep In Southeastern Utah, Michael M. King, Gar W. Workman

Elusive Documents

No abstract provided.

Final Environmental Impact Statement, U.S. Department Of Housing And Urban Development

Elusive Documents

No abstract provided.

Longitudinal And Seasonal Changes In Functional Organization Of Macroinvertebrate Communities In Four Oregon Streams., Charles P. Hawkins, J. R. Sedell

Watershed Sciences Faculty Publications

Relative numerical dominance and densities of invertebrate functional feeding groups are compared with longitudinal and seasonal changes in food resources in a Cascade Range stream system in Oregon. We also compare our data with hypothetical predictions of the River Continuum model. We found that both relative abundances and densities of functional groups fit qualitative characterization of stream reaches and the River Continuum model: Shredders dominated upper shaded reaches; scrapers were most important in intermediate—sized sections; collectors increased in importance progressively downstream; predators were nearly constant in relative abundance at all sections; other functional groups were either rare or only locally …

Utilization Of Aspen Populus-Tremuloides Trees As A Ruminant Feed Component, M. Singh, L.D. Kamstra

Aspen Bibliography

When traditional roughages are in short supply or high in price, other fibrous feed sources for ruminants should be considered if available at a competitive price. One such fibrous material shown to have potential as a ruminant feed is the aspen tree (Populus tremuloides Michx.) harvested in its entire form to include bark, leaves and trunk. The aspen tree is the most widespread tree species in North America and the least utilized. Estimates exceed 6 million acres of mature trees in an area which would include the Black Hills (58,000 acres), the Great Lakes region and the Rocky …

Opportunities For Wildlife Habitat Management In Aspen, Paul W. Shields

Aspen Bibliography

No abstract provided.

Aspen Regeneration, George A. Schier

Aspen Bibliography

No abstract provided.

Ecological Succession In Aspen And Its Consequences On Multiple Use Values, Roy O. Harniss

Aspen Bibliography

Aspen can be categorized as (1) seral-- successional to conifer, (2) stable--regenerates to aspen, or (3) decadent--successional to brush, forbs, or grasses. Succession to conifers reduces understory production, plant and wildlife diversity, water yields, and aesthetic values while it increases timber values. Stable aspen stands, except possibly for timber values, maintain these multiple use values if grazing is not excessive. In decadent aspen stands all of the multiple use values except water are reduced. Management expectations and returns for multiple use values would depend on the successional status of the aspen.