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Effect Of Exercise On Tissue Concentrations Of Thyroid Hormones And On Thyroxine Degradation Rate In The Rat, William W. Winder Aug 1971

Effect Of Exercise On Tissue Concentrations Of Thyroid Hormones And On Thyroxine Degradation Rate In The Rat, William W. Winder

Theses and Dissertations

Several methods were used to detect changes in thyroid activity and in degradation of thyroxine (T4) in exercising and sedentary control rats. Rats were run in a motor-driven exercise wheel over a three-week period at progressively increasing work loads and then were run 1.5-2 hours per day for 10-14 days before sacrifice. Disappearance of injected T4-125I from plasma was considerably enhanced by exercise. As determined by isotopic equilibration and paper chromatographic methods, T4 concentration was depressed in plasma and elevated in liver of exercised rats. No significant changes in T4 concentration were observed in heart, kidney, or gastrocnemius muscle. Thyroidal …

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A Pectin Histochemical Study Of The Host Pathogen Relationship Between Pyrenochaeta Terrestris And Allium Cepa, Leroy Richard Cobia Aug 1971

A Pectin Histochemical Study Of The Host Pathogen Relationship Between Pyrenochaeta Terrestris And Allium Cepa, Leroy Richard Cobia

Theses and Dissertations

The involvement of pectin and pectinases in the host pathogen interaction of P. terrestris and Allium cepa were investigated by use of pectin histochemical stains at the electron microscope level. Several different pectin histochemical stains were used, but only two (the hydroxylamine reaction, and the pectin stain developed in this study) gave reliable results. It was observed that by the time the fungus has reached the host cell wall pectinesterase and endoplygalacturonase have fully removed the pectin from the host cell wall. When this has occurred, cellulases are released which continue to degrade the host cell wall. Electron transparent areas …

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Studies Of Pig Brain Thiamin Pyrophosphokinase, James Weldon Peterson Aug 1971

Studies Of Pig Brain Thiamin Pyrophosphokinase, James Weldon Peterson

Theses and Dissertations

Pig brain thiamin pyrophosphokinase (TPK) (ATP: thiamin pyrophosphotransferase, EC 2.7.6.2) was purified 260-fold over extracts of brain acetone powder. The purification was followed using a direct, radiometric assay. As determined in an analytical ultracentrifuge and by disc-gel electrophoresis, the most highly purified enzyme preparations were not homogeneous. The purified enzyme has a broad pH optimum extending from 8.3 to 9.3 in phosphate-glycylglycine buffer. It has an isoelectric point at about pH 4.2. For optimal enzymatic activity, the ratio of magnesium to ATP must be 0.6. Any deviation from this ratio causes a rapid drop in enzymatic activity. A study of …

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Prey Utilization By Nesting Golden Eagles In (Aquila Chrysaertos) In Central Utah, William Bruce Arnell Aug 1971

Prey Utilization By Nesting Golden Eagles In (Aquila Chrysaertos) In Central Utah, William Bruce Arnell

Theses and Dissertations

During the spring of 1969 and 1970, 28 Golden Eagle eyries in four locales in central Utah were observed to determine the prey utilized during the nesting season. Visits were made every two weeks to the eyries. Prey were removed from the nests upon counting to avoid recounting at the next visit. Sixteen species of vertebrates were found as prey for nesting Golden Eagles. Mammals comprised 96 per cent of the prey, and lagomorphs alone accounted for 92 per cent. The blacktail jackrabbit occurred as 77.8 per cent of all prey items. Avian species constituted 3.9 per cent of prey …

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The Biochemical Response Of Provo Bay To Nutrient Inflow, R. Bruce Sundrud Aug 1971

The Biochemical Response Of Provo Bay To Nutrient Inflow, R. Bruce Sundrud

Theses and Dissertations

Provo Bay of Utah Lake, Utah, receives the effluents from farms, industry, and three cities. In order to determine the effects of these effluents, eleven stations were established throughout the Bay. At weekly intervals from June 19 to October 26, 1970, and monthly thereafter until March, 1971, the water at these stations was sampled for dissolved oxygen (DO}, carbon dioxide (CO2), turbidity, pH, phosphates, nitrates, biochemical oxygen demand (BOD) and coliform bacteria. Due to intense algal blooms, the quality of the water changes as it passes through Provo Bay. Average values for the inflow, mid-Bay, and point of discharge respectively …

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A Study Of Seed Germination And Establishment Of Seedlings Of Lodgepole Pine In Different Soil Types Under Certain Bog Conditions, Yun-Fan Yuan Aug 1971

A Study Of Seed Germination And Establishment Of Seedlings Of Lodgepole Pine In Different Soil Types Under Certain Bog Conditions, Yun-Fan Yuan

Theses and Dissertations

Soil texture, organic matter content, and hydrogen-ion concentration of soil samples were determined to find the correlation between soil characteristics, seed germination and seedling establishment of Pinus contorta. Scarification and stratification were treatments used for determining germination requirements of dormant seeds. Seeds were planted in different soils and experiments were conducted to determine the effects of different light intensities, temperatures, and depths of the water table on apparent photosynthesis rate and seedling establishment. Soil samples, pine cones, and young trees needed for the experiments were collected near Lily Lake, in the Uintah Mountains. The greatest and the fastest germination was …

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Environmental Factors That Influence The Timing Of A Cyclic En Masse Foraging Migration Of Ligia Occidentalis Dana (Crustacea: Isopoda) On The Northern Gulf Of California, J. Wanless Southwick Aug 1971

Environmental Factors That Influence The Timing Of A Cyclic En Masse Foraging Migration Of Ligia Occidentalis Dana (Crustacea: Isopoda) On The Northern Gulf Of California, J. Wanless Southwick

Theses and Dissertations

En masse foraging migrations of Ligia occidentalis Dana were conspicuous events on rocky beaches near Puerto Peñasco, Sonora, Mexico. Experiments were conducted to determine which factors of the environment contained the regulating rhythm for the migration, if indeed the event were cyclic. Experiments were conducted in the laboratory using a tide-simulation aquarium and in the field using mark and release techniques. A time-lapse photography system was used in the field to quantify isopod activity for comparison with environmental factors. A regular cycle for the foraging migration was found. It was in tune with both insolation and tidal cycles so that …

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Effects Of Ionizing Radiations On Mite Populations At The Nevada Test Site, Richard Riddle Walker Aug 1971

Effects Of Ionizing Radiations On Mite Populations At The Nevada Test Site, Richard Riddle Walker

Theses and Dissertations

Population and community studies dealing with radiation stress have essentially neglected the mites. When references have been made to the responses of mite populations to ionizing radiation, the form of radiation has almost always been gamma. This study reports results of naturally occurring populations of desert mites, at the Nevada Test Site, to ionizing radiation--largely beta. Eighteen species groups were identified from Berlese samples and tested for stress responses with species diversity indices and analyses of variations in predator-prey ratios. General agreement with previous studies showed a decreasing pattern in these two tests within the controls. This was interpreted as …

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Post-Mortem Examination Of Cattle And Sheep For Parasitic Helminths, Phil Duke Wright Aug 1971

Post-Mortem Examination Of Cattle And Sheep For Parasitic Helminths, Phil Duke Wright

Theses and Dissertations

A survey of helminth parasites of sheep and cattle was conducted to determine the incidence and distribution of these parasites that could be detected by post-mortem examination. Animals were obtained from local abattoirs within the valley, and the viscera were examined for the presence of helminth parasites. Parasites identifies from sheep in order of highest incidence were: Haemonchus contorus, Ostertagia cicumcinta, Chabertia ovina, Nematodirus spathiger, Trichostongylus colubriformis, Thysanosoma actinioides, Trichuris ovis, N. filicollis, Echinococcus granulosus, Strongyloides papillosus, O. ostertagi, Cooperia oncophora, Cysticercus tenuicollis, Fasciola hepatica, Oesophagostomum venulosum, Moniezia expansa, and M. benedieni. Those recovered from cattle in order of highest …

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Botanical And Physiographic Reconnaissance Of Northern Yukon, Stanley L. Welsh, J. Keith Rigby Jul 1971

Botanical And Physiographic Reconnaissance Of Northern Yukon, Stanley L. Welsh, J. Keith Rigby

Brigham Young University Science Bulletin, Biological Series

The area of study is located in the northern panhandle of the Yukon Territory, and includes the British and Barn Mountains, Old Crow Flats, and the coastal plain of the north slope. The physiography and geology of the region is described and the plant communities are enumerated. An annotated list of 279 species, 15 subspecies, 63 varieties, and 1 form of vascular plants collected during the summer of 1970 is included.

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The 1968 Presidential Decline Of George Romney: Mormonism Or Politics?, Dennis L. Lythgoe Jul 1971

The 1968 Presidential Decline Of George Romney: Mormonism Or Politics?, Dennis L. Lythgoe

BYU Studies

No abstract provided.

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High-Pressure Equation Of State For Nacl, Kcl, And Cscl, Daniel L. Decker Jul 1971

High-Pressure Equation Of State For Nacl, Kcl, And Cscl, Daniel L. Decker

Faculty Publications

A calculation of the equation of state for NaCl from a Mie-Grüneisen equation was repeated using more accurate values of the zero-pressure compressibility. It was also extended to KCl and CsCl. An analysis of this approach to pressure calibration indicates that it will yield pressures with about the same accuracy as can be presently achieved by experimental measurements above 25 kbar, and thus furnishes a temporary practical pressure scale.

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The Bernhisel Manuscript Copy Of Joseph Smith's Inspired Version Of The Bible, Robert J. Matthews Jul 1971

The Bernhisel Manuscript Copy Of Joseph Smith's Inspired Version Of The Bible, Robert J. Matthews

BYU Studies

No abstract provided.

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Mammalian Ectoparasite Consortism At The National Reactor Testing Station, Dorald M. Allred Jun 1971

Mammalian Ectoparasite Consortism At The National Reactor Testing Station, Dorald M. Allred

Great Basin Naturalist

No abstract provided.

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Solid-Liquid Phase Equilibria Studies :|Bi. Several Charge Transfer Systems ; Ii. A Metallic System ; Iii. A Liquid Crystal, Dee Edward Oyler May 1971

Solid-Liquid Phase Equilibria Studies :|Bi. Several Charge Transfer Systems ; Ii. A Metallic System ; Iii. A Liquid Crystal, Dee Edward Oyler

Theses and Dissertations

Solid-liquid phase equilibria studies were used to investigate possible compound formation in solutions of (i) N,N-dimethylformamide (DMF) and (ii) N,N-dimethylacetamide (DMA) with a series of halogenated hydrocarbons that were selected to give a wide range of acceptor properties. Solid 1:1 intermolecular compounds were identified from solutions of (i) DMF and (ii) DMA with CCl_4, CBrCl_3, and C_6H_5CCl_3. The intermolecular compounds (DMF)_2•CCl_4 and (DMF)_2•CBrCl_3 were also found. The results suggest charge transfer from DMF or DMA to the chlorine atoms of the acceptor molecule as the process for compound formation. Thermal methods were used to determine with high precision the solid-liquid …

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A Calorimetric Study Of Metal Ion Cyclic Polyether Interaction :|Bi. Cation Binding Properties Of Macrocyclic Polyethers In Aqueous Solution As A Function Of Temperature ; Ii. Effect Of Solvent Dielectric Constant On The Binding Properties Of Cyclic Polyethers For Na[Superscript +] And K[Superscript +], Dennis Pershing Nelson May 1971

A Calorimetric Study Of Metal Ion Cyclic Polyether Interaction :|Bi. Cation Binding Properties Of Macrocyclic Polyethers In Aqueous Solution As A Function Of Temperature ; Ii. Effect Of Solvent Dielectric Constant On The Binding Properties Of Cyclic Polyethers For Na[Superscript +] And K[Superscript +], Dennis Pershing Nelson

Theses and Dissertations

The complexation properties of the two isomers of the cyclic polyether dicyclohexyl-18-crown-6 are examined in aqueous solution for a series of metal ions at various reaction temperatures. The results are discussed in terms of size relationships and salvation characteristics of both polyether and metal ions. ΔCp° values are determined from the temperature dependence of the ΔH° values. A discussion of the errors involved in the determination of ΔH° from the temperature dependence of log K values is also included. Comparisons are made between the results of this study and those of a similar study by H. K. Frensdorff, E. I. …

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Eutrophication Of Small Lakes, Lynn T. Kenison May 1971

Eutrophication Of Small Lakes, Lynn T. Kenison

Theses and Dissertations

An estimate was made to determine the amount of nitrate and phosphate entering Utah Lake in 1968. To make this estimate, the flow data for 1968 and the nitrate and phosphate concentrations for 1970 were used. This was done because of the lack of information. The results show that the total nitrate added to Utah Lake in 1968 was 7,638,000 pounds. The total phosphate added was 1,740,200 pounds. Of this amount, 12,4 per cent of the nitrate and 18.0 per cent of the phosphate was released from the lake through the Jordan River. The rest remained in the lake to …

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A Study In The Design And Development Of A Baseball Pitching Machine, Neal M. Lundwall May 1971

A Study In The Design And Development Of A Baseball Pitching Machine, Neal M. Lundwall

Theses and Dissertations

Throughout history man has had the need of services which require great skill or tremendous strength or delicate consistency on the part of those who perform. Much of the time he has turned to the machine to accomplish these requirements.

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Transition From Laminar To Turbulent Flow For A Two-Phase Mixture, Mohammed Sharief Qureshi May 1971

Transition From Laminar To Turbulent Flow For A Two-Phase Mixture, Mohammed Sharief Qureshi

Theses and Dissertations

A phase is simply one of the states of matter. Multiphase flow is the simultaneous flow of several phases. Two-phase flow is the simplest case of multiphase flow.

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The Roles Of Chlorine Azide In Chemical Lasers, Walter Wood Rice May 1971

The Roles Of Chlorine Azide In Chemical Lasers, Walter Wood Rice

Theses and Dissertations

ClN_3 was photolyzed in various gas mixtures to transform its chemical energy into laser radiation. Reaction mechanisms, energy distribution in reaction products, and relative reaction rates were deduced from the laser emission. Flash photolysis of ClN_3-H_2 mixtures produced HCl laser emission; however, due to a narrow range of operating conditions and many competing reactions, the laser output was less than that obtained from comparable Cl_2-H_2 mixtures. The rate constants for H + ClN_3 —> HCl* (v=n) + N_3 were determined to be 0.45 ± 0.05 of the corresponding rate constants for H + Cl_2 —> HCl* (v=n) + Cl. Chlorine …

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Solid-Liquid Phase Equilibria Of The Potassium-Rubidium And Rubidium-Cesium Alloy Systems, Elisabeth M. Delawarde May 1971

Solid-Liquid Phase Equilibria Of The Potassium-Rubidium And Rubidium-Cesium Alloy Systems, Elisabeth M. Delawarde

Theses and Dissertations

Thermal methods of high precision were used to determine the solid-liquid phase equilibria diagrams for the potassium-rubidium and the rubidium-cesium systems. Both form minima in the liquidus curves occurring at 307.00° K with 0.667 mole fraction rubidium in the potassium-rubidium system and 282.85° K with 0.530 mole fraction cesium in the rubidium-cesium system. In the potassium-rubidium system, the liquidus and solidus points are very close together, giving a very narrow temperature range for the two phase region. The freezing point minimum in the potassium-rubidium system occurs at 0.667 mole fraction rubidium, suggesting the possible formation of a KRb2 intermetallic compound.

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Bacterial Receptor Sites For Uptake Of Transforming Dna, Douglas Pierre Bingham May 1971

Bacterial Receptor Sites For Uptake Of Transforming Dna, Douglas Pierre Bingham

Theses and Dissertations

Bacterial transformation is defined as a mechanism of genetic exchange whereby a population of bacteria can obtain genetic informa-tion as a result of cellular uptake and integration of extracellular deoxyribonucleic acid released from other bacteria by natural or in-duced lysis. In order for a transformable strain of bacteria to take up DNA and to undergo transformation, the cells must be in a physiolog-ical state called competence. A cell is referred to as competent if it has the ability to bind extracellular DNA irreversibly and subsequently to integrate and express the DNA.

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A Computer Simulation Of A Partial Venous System Of A Human Lower Extremity, David C. Smith May 1971

A Computer Simulation Of A Partial Venous System Of A Human Lower Extremity, David C. Smith

Theses and Dissertations

The human body is truly a fascinating and complex creation of our Maker. Because of the complexity and variability, many of its workings were little known until recent years. Some of the more amazing facts of the circulatory system follow. If the individual blood vessels of a single adult, i.e., artery, arteriole capillary, venule and vein, were laid end to end, they would extend more than 60,000 miles. For the average adult, the heart beats 70 times per minute; for the well-conditioned athlete, 50-60 beats per minute; and for the extraordinary athlete, as few as 37 times per minute. The …

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An Ecological Life History Of Tall Bluebell In Utah, Verl B. Matthews May 1971

An Ecological Life History Of Tall Bluebell In Utah, Verl B. Matthews

Theses and Dissertations

The ecological life history of tall bluebell, Mertensia arizonica Green var. leonardi (Rydb.) Johnston (M. leonardi Rydb.), was investigated during 1963 and 1964. Summer field studies were conducted on the Mud Creek Sleep Allotment of the Uinta National Forest, Wasatch County, Utah. Laboratory and herbarium studies were carried out at Brigham Young University. Specific objectives were to investigate seed germination, seedling development, root system, phenology, palatability, and describe the physical site factors where bluebell occurred. A study of this species was necessary because much of the herbage produced in certain areas of aspen range is not utilized. This condition occurs …

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What Is “The Book Of Breathings”?, Hugh Nibley Apr 1971

What Is “The Book Of Breathings”?, Hugh Nibley

BYU Studies

No abstract provided.

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The Gentle Blasphemer: Mark Twain, Holy Scripture, And The Book Of Mormon, Richard H. Cracroft Apr 1971

The Gentle Blasphemer: Mark Twain, Holy Scripture, And The Book Of Mormon, Richard H. Cracroft

BYU Studies

No abstract provided.

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Lamb-Mössbauer Factor Of Sodium Ferrocyanide, Daniel L. Decker, L. E. Lortz Feb 1971

Lamb-Mössbauer Factor Of Sodium Ferrocyanide, Daniel L. Decker, L. E. Lortz

Faculty Publications

Using a set of commercially prepared sodium ferrocyanide absorbers enriched to 91.2% Fe57 the Lamb-Mössbauer factor was measured to be 0.28±0.03. The thickness of Fe57 for these absorbers was measured using x-ray absorption techniques and was found to be considerably smaller than that advertised by the manufacturer even after correcting for the size of the ferrocyanide particles in the absorbers.

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Land Use In Wah Wah And Pine Valleys, Western Utah, Joseph R. Murdock, Stanley L. Welsh Jan 1971

Land Use In Wah Wah And Pine Valleys, Western Utah, Joseph R. Murdock, Stanley L. Welsh

Brigham Young University Science Bulletin, Biological Series

This is a review of the use of public lands in Wah Wah and Pine Valleys in western Utah for grazing of livestock, mining, and other private enterprises. The total area of the two valleys is approximately 1,440 square miles of which about 30 square miles are privately owned. From the time grazing of domestic livestock was initiated in the 1870's and 1880's until 1934, the land was free public domain and was grazed on a first-come, first-served basis. Passage of the Taylor Grazing Act in 1934 ended free use of public lands. Existing evidence indicates that by 1934 the …

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A Study Of Rock Music To Determine Its Declared Position Relative To Unchastity, The Use Of Drugs And The Departure From Traditional Concepts Of Family And Religion, E. Lynn Balmforth Jan 1971

A Study Of Rock Music To Determine Its Declared Position Relative To Unchastity, The Use Of Drugs And The Departure From Traditional Concepts Of Family And Religion, E. Lynn Balmforth

Theses and Dissertations

One of the social phenomena of our time (1960s) has been the popularization of a kind of music among the youth known as rock 'n' roll. It was the intent of this study to determine if the medium of rock did, in fact, maintain a posture of promulgating unchastity, the use of drugs and departure from traditional concepts of family and religion.

Supported by statements from leading rock musicians it was found that the big beat had a cultural root in the Negroid race. Coupling the big beat gospel rhythms of the south with the white country and western music, …

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History Of Utah's Salt Industry 1847-1970, John L. Clark Jan 1971

History Of Utah's Salt Industry 1847-1970, John L. Clark

Theses and Dissertations

Utah salt makers have extracted salt from three sources, the principal of these being brine from Great Salt Lake. Other sources are saline beds in Great Salt Lake Desert and subterranean halite formations in central Utah.

This study traces the development of methods used to recover and refine salt by the industry, in general, and by specific companies. It provides brief, historical sketches of the major corporations and the economic, legal, and environmental factors affecting their growth.

Utah produces about 1 per cent of the nation's salt, exporting over half of it from the state. The major factors limiting the …

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