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Inhibition Of Planarian Regeneration, Douglas Pierre Bingham Aug 1968

Inhibition Of Planarian Regeneration, Douglas Pierre Bingham

Theses and Dissertations

This thesis describes my study of inhibition of brain regeneration in planaria. The flatworm (Dugesia tigrina) possesses a remarkable ability to regenerate lost parts, including the head. The primary objective of my study was to determine the extent to which an inhibiting substance, located in the head, would prevent regeneration of the brain. A secondary objective was to study whether DMSO (Dimethyl Sulfoxide) would facilitate the action of the inhibitor.

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Osteological And Myological Comparisons Of The Head And Thorax Regions Of Cnemidophorus Tigris Septentrionalis Burger And Ameiva Undulata Parva Barbour And Noble (Family Teiidae), Don Lowell Fisher Aug 1968

Osteological And Myological Comparisons Of The Head And Thorax Regions Of Cnemidophorus Tigris Septentrionalis Burger And Ameiva Undulata Parva Barbour And Noble (Family Teiidae), Don Lowell Fisher

Theses and Dissertations

There has long been a need for a comparative study of the osteological and myological structures of the reptilian family Teiidaeo This present study is organized to increase our understanding of the anatomical features of the head and thorax regions of two members of distinct phylogenetic branches of the family Teiidaeo The two genera discussed are Cnemidophorus and Ameiva.

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A Study Of The Channel Catfish, Ictalurus Punctatus (Rafinesque), In Mud Lake, Utah, Horst Friedrich Siewert Aug 1968

A Study Of The Channel Catfish, Ictalurus Punctatus (Rafinesque), In Mud Lake, Utah, Horst Friedrich Siewert

Theses and Dissertations

From June to November 1967, a study on channel catfish, lctalurus punctatus (Rafinesque), in Mud Lake, Utah Co., Utah was undertaken. The objectives were (I) to estimate if channel catfish are increasing or decreasing in Mud Lake, (2) to estimate the mean size of adult channel catfish in Mud lake, (3) to determine which environmental factors effect the catch of channel catfish, and (4) to determine if the channel catfish in Mud lake are residents year round. A total of 310 mature channel catfish and 920 carp were collected with four hoop nets. Two fingerling were captured by seining. Ratios …

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Field Observations And Laboratory Studies On Growth And Tillering In Seedlings Of Oryzopsis Hymenoides As Affected By Selected Environmental Factors Of The Sand Dunes Of Lynndyl, Utah, Leopold B. Smigelski Aug 1968

Field Observations And Laboratory Studies On Growth And Tillering In Seedlings Of Oryzopsis Hymenoides As Affected By Selected Environmental Factors Of The Sand Dunes Of Lynndyl, Utah, Leopold B. Smigelski

Theses and Dissertations

Seedlings of Indian rice grass Oryzopsis hvmenoides (Roem. & Shult.) Ricker. were studied to determine the effect of soil moisture, photoperiod, depth of burial of germinated grains, temperature, and the rate of soil accumulation on seedling growth and tillering. The study was performed in two phases: Field observations and laboratory studies. Field observations were made on a system of sand dunes located northwest of Lynndyl, Utah. General observations were made from January, 1966 to May, 1968.

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An Experimental Investigation Of Proportional Braking, Rudolf Limpert Aug 1968

An Experimental Investigation Of Proportional Braking, Rudolf Limpert

Theses and Dissertations

In recent years automobile safety has become more and more important.The braking device contributes largely to the problem of safe driving.

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Design And Operation Of Equipment For Impact Test Of A Hydraulic Cushion, Harshadbhai R. Patel Aug 1968

Design And Operation Of Equipment For Impact Test Of A Hydraulic Cushion, Harshadbhai R. Patel

Theses and Dissertations

In recent years, experiments have been carried out to evaluate the performance of water-filled cushion cells used to attenuate energy of automobile collisions. The water-filled cushion cell is a vinyl plastic cylinder of 6 inches nominal outside diameter, 1/4 inch wall thickness, 40 inches length, closed at the bottom by a cast-in-place vinyl plug and partially closed by a bolted-in vinyl diaphragm at the upper end. These cells are designed to be installed in the path of a crashing automobile to absorb and dissipate the kinetic energy of impact. Properly designed cushions could be used as one means of saving …

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Development Of A Generalized Structural Dynamics Computer Program, Val E. Simmons Aug 1968

Development Of A Generalized Structural Dynamics Computer Program, Val E. Simmons

Theses and Dissertations

The purpose of this thesis was the development of a generalized structural-dynamics computer program to calculate the response of multi-degree-of-freedom systems. The user of this computer program, having a limited background in matrix algebra and vibrational analysis, can gain numerical and graphical information concerning the dynamic response of multi-degree-of-freedom structures. The user, with a minimal amount of FORTRAN experience, will find this thesis ideally suited for his needs.

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The Relationship Of The Priesthood Correlation Program To The Latter-Day Saint Concept Of Zion, Dale C. Mouritsen Aug 1968

The Relationship Of The Priesthood Correlation Program To The Latter-Day Saint Concept Of Zion, Dale C. Mouritsen

Theses and Dissertations

The purpose of the study is to analyze the Latter-day Saint concept of Zion and the Priesthood Correlation Program in order to determine how they are related and to what extent the Correlation Program is attempting to prepare the Church for the establishment of Zion.

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Nesting Ecology Of The Great Horned Owl Bubo Virginianus In Central Western Utah, Dwight Glenn Smith Aug 1968

Nesting Ecology Of The Great Horned Owl Bubo Virginianus In Central Western Utah, Dwight Glenn Smith

Theses and Dissertations

Information was collected on the nesting ecology of the Great Horned Owl, with particular emphasis placed on aspects of its population and distribution, territoriality and predation. The study was conducted for the two years, 1967 and 1968 in the Thorpe and Topliff hills of central western Utah. Nesting densities on the study area were .36 pairs per square mile in 1967 and .40 pairs per square mile in 1968. Nests averaged one mile apart and were distributed in the periphery of the hills, overlooking the desert valleys. Favorite nest sites were cliff niches, but abandoned quarries and junipers were also …

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The Thermodynamics (Log K, [Delta]H°, [Delta]S°, [Delta]Cp°) Of Metal Ligand Interaction In Aqueous Solution.|Ni.|P Design And Construction Of An Isothermal Titration Calorimeter.|Nii.|Pthe Interaction Of Cyanide Ion With Bivalent Nickel, Zinc, Cadmium And Mercury.|Niii.|Pthe Interaction Of Glycinate Ion With Bivalent Manganese, Iron, Cobalt, Nickel, Copper, Zinc And Cadmium, Harlin Dee Johnston Aug 1968

The Thermodynamics (Log K, [Delta]H°, [Delta]S°, [Delta]Cp°) Of Metal Ligand Interaction In Aqueous Solution.|Ni.|P Design And Construction Of An Isothermal Titration Calorimeter.|Nii.|Pthe Interaction Of Cyanide Ion With Bivalent Nickel, Zinc, Cadmium And Mercury.|Niii.|Pthe Interaction Of Glycinate Ion With Bivalent Manganese, Iron, Cobalt, Nickel, Copper, Zinc And Cadmium, Harlin Dee Johnston

Theses and Dissertations

A new isothermal titration calorimeter has been designed to facilitate the study of heats of reaction and heats of solution at constant temperature. With this calorimeter, endothermic or exothermic processes can be studied at temperatures constant to ±0.0002°C. Heat effects are compensated by balancing the heat effect of the process taking place in the calorimeter against a variable heat and a constant cooling Peltier device. The calorimeter was tested by measuring the heat of ionization of water and the heat of dilution of aqueous HClO_4 solutions. For these systems heats were measured to an accuracy of ±0.02 calorie. Log K, …

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The Cat Flea, Ctenocephalides Felis, As A Potential Vector Of Trypanosoma Lewisi, Robert Patrick Belihar Aug 1968

The Cat Flea, Ctenocephalides Felis, As A Potential Vector Of Trypanosoma Lewisi, Robert Patrick Belihar

Theses and Dissertations

The first hemoflagellate was discovered by Valentine in 1841; two years later Gruby established the genus Trypanosoma for a flagel-late in the blood of frogs, and in 1879 Lewis in India described Try-panosoma lewisi Kent of the rat (Belding, 1965:141).

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Fall And Winter Population Study Of The Macro-Invertebrate Fauna Of Lincoln Beach, Utah Lake, With Notes On Invertebrates In Fish Stomachs., Ralph Buckly Brown Aug 1968

Fall And Winter Population Study Of The Macro-Invertebrate Fauna Of Lincoln Beach, Utah Lake, With Notes On Invertebrates In Fish Stomachs., Ralph Buckly Brown

Theses and Dissertations

Due to the inconveniences associated with under ice population studies, most aquatic population studies are made during the spring, summer, and fall seasons. Like most lakes little is known about the fall and winter popu-lations of the Utah Lake invertebrates. The purpose of this study is to classify, determine quantitative fall and winter population fluctuations, and obtain life history and ecological information of the macro-invertebrates at . Lincoln Beach, Utah Lake. This lake is the largest, natural occurring body of fresh water in the state and has a high potential for the production of gamefish and water-fowl. As Smart (1960) …

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The Effect Of Thiamine And Its Antagonists On Plasma And Tissue Lactic Dehydrogenase In Rats, Dong Hwa Park Aug 1968

The Effect Of Thiamine And Its Antagonists On Plasma And Tissue Lactic Dehydrogenase In Rats, Dong Hwa Park

Theses and Dissertations

The lactic dehydrogenase activity in plasma and tissues was measured in the thiamine-deprived, the oxythiamine-treated and the pyrithiamine-treated rats as well as the control rats. The lactic dehydrogenase levels of brain and kidney were significantly increased by oxythiamine treatment. The enzyme activity in heart was markedly decreased only in the thiamine-deprived rats. Unlike the above tissues, the enzyme levels in liver were decreased by 29-44 per cent in all three types of thiamine deficiency, However, the enzyme activity in plasma was significantly increased only by pyrithiamine administration. The distribution patterns of lactic dehydrogenase isozymes were electrophoretically examined in these deficiencies. …

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Nesting Ecology And Behavior Of The Golden Eagle In West Central Utah, Franz J. Camenzind Aug 1968

Nesting Ecology And Behavior Of The Golden Eagle In West Central Utah, Franz J. Camenzind

Theses and Dissertations

The Golden Eagle Aquila chrysaetos canadensis Linn. is facing extinction in much of its range. In the Western Hemisphere its numbers are restricted primarily to the mountainous regions west of the 99th meridian, from extreme northern Alaska to northern Mexico (Hobbie and Cade, 1962) and from timberline in Colorado to below sea level in Death Valley, California (Summer, 1929a).

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Floral Induction In Some Members Of The Umbelliferae In Response To Cold Treatment, Photoperiod, Gibberelic Acid, And Kinetin, A: Glenn Wahlquist Jul 1968

Floral Induction In Some Members Of The Umbelliferae In Response To Cold Treatment, Photoperiod, Gibberelic Acid, And Kinetin, A: Glenn Wahlquist

Theses and Dissertations

This study was undertaken to determine the influence of different treatments of temperature, photoperiod, gibberellic acid, and kinetin on the flowering responses of certain biennial species of the Umbelliferae. Seven species were selected for study, namely: carrots, wild carrots, parsnips, wild parsnips, poison hemlock, celery, and parsley.

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An Investigation Of A Thyroidal Control Of Water Balance In The Leopard Frog, Rana Pipiens, Scott Mcclung Martin Jul 1968

An Investigation Of A Thyroidal Control Of Water Balance In The Leopard Frog, Rana Pipiens, Scott Mcclung Martin

Theses and Dissertations

A possible thyroidal control of water balance in the leopard frog, Rana pipiens, was investigated by (1) chemically thyroidectomizing intact animals by chronic injections of the goitrogen, 6-n-propyl-2-thiouracil (PTU ), or making animals hyperthyroid with thyroxine injections, and (2) dehydration of the frogs in a flow of air to enhance the rate of water loss through the skin, followed by rehydration in tap water until the animals regained their former weight. Radioiodine was employed in limited studies on the frog thyroid gland to ascertain the effects on thyroidal function caused by PTU. The frogs were dehydrated in desiccators in which …

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Getting Ready To Begin, An Editorial, Hugh Nibley Jul 1968

Getting Ready To Begin, An Editorial, Hugh Nibley

BYU Studies

No abstract provided.

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Liverpool, 1856: Nathaniel Hawthorne Meets Orson Pratt, Richard H. Cracroft Jul 1968

Liverpool, 1856: Nathaniel Hawthorne Meets Orson Pratt, Richard H. Cracroft

BYU Studies

No abstract provided.

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Dickens And The Mormons, Richard J. Dunn Jul 1968

Dickens And The Mormons, Richard J. Dunn

BYU Studies

No abstract provided.

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The Dying Leaves; Apple Trees In Winter; Arthur; Merlin; The Genealogist; To Robert Welch, Poems, Colleen Whitley Jul 1968

The Dying Leaves; Apple Trees In Winter; Arthur; Merlin; The Genealogist; To Robert Welch, Poems, Colleen Whitley

BYU Studies

No abstract provided.

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The Scripture Scholar, Colleen Whitley Jul 1968

The Scripture Scholar, Colleen Whitley

BYU Studies

No abstract provided.

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Beginnings Carol Lynn Pearson, Edward L. Hart Jul 1968

Beginnings Carol Lynn Pearson, Edward L. Hart

BYU Studies

No abstract provided.

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Reminiscenses And Reflections, Alphonse A. Kubly, Dr. Leo Schelbert, L. B. Jun 1968

Reminiscenses And Reflections, Alphonse A. Kubly, Dr. Leo Schelbert, L. B.

Swiss American Historical Society Newsletter

Before the advent of Mr. Collier, Everglades had been a sport-fisherman's outpost. There was an inn, the Rod & Gun Club, catering to yacht-borne fishing enthusiasts, and three or four small bungalows harbored families who made their modest living as guides. Now Everglades was going to be reshaped in a manner to do honor to its role as Country seat. There were many reminders of Mrs. Collier's favorite field of action: New York City. Approaching by boat, a street sign with the incongruous legend "Riverside Drive" had come into view. There also was the unavoidable Broadway. Along the boat pier …

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Full Issue Jun 1968

Full Issue

Swiss American Historical Society Newsletter

No abstract provided.

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Notes On The Fern Family Matoniaceae From The Western United States, Samuel R. Rushforth May 1968

Notes On The Fern Family Matoniaceae From The Western United States, Samuel R. Rushforth

Theses and Dissertations

A Cretaceous fern flora haas been recently discovered near Westwater, Grand County, Utah. Among specimens collected from Westwater are many forms related to extant members of the fern family Matoniaceae. This family was widely distributed geographically throughout most of the Mesozoic Era, and matoniaceous ferns have been collected from several fossil localities in the United States. The Matoniaceae was especially important in the United States during Lower Cretaceous times. Five species, Matonidium brownii Rushforth, Matonidium lanceopennis Rushforth, Matonidium galleyi (Miner) Rushforth, Matonidium americanum Berry em. Rushforth, and Matonidium sp., and one variety, Matonidium brownii var. extenda Rushforth, are considered in …

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Dispersal Of Mites Within Apple Trees Of An Abandoned Orchard In Central Utah, Eugene Eldon Nelson May 1968

Dispersal Of Mites Within Apple Trees Of An Abandoned Orchard In Central Utah, Eugene Eldon Nelson

Theses and Dissertations

From January to July, 1967, a study of dispersion and distribution characteristics of Typhlodromus mcgregori Chant, Bryobia praetiosa Koch, and Bryobia rubrioculus (Scheuten) was made in an abandoned apple orchard in Highland, American Fork, Utah and in the laboratory at Provo, Utah. Bryobia praetiosa overwintered on the spurs and the other protected sites and with the advent of spring migrated out of the tree and back onto the cover crop. Coinciding with the movement of B. praetiosa out of the tree was the hatching of winter eggs and maturation of B. rubrioculus primarily on the spurs but as far down …

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Ultrastructural Investigations Of Powdery Mildew Of Rose Caused By Sphaerotheca Pannosa (Wallr.) Lev, Ani Clipper Watene May 1968

Ultrastructural Investigations Of Powdery Mildew Of Rose Caused By Sphaerotheca Pannosa (Wallr.) Lev, Ani Clipper Watene

Theses and Dissertations

The purpose of this study was to evaluate the ultrastructural aspects of the host-pathogen relationship between the fungus Sphaerotheca pannosa (Wallr.) Lev. and a susceptible horticultural variety of floribunda rose "Eutin". Attention was given to the penetration of hyphal tubes, and their subsequent development into: haustorial elements in epidermal cells of rose. In addition, changes in the morphology of infected epidermal cells were described. Thin sections of rose leaves infected with S. pannosa were examined in a Hitachi electron microscope, model HS-7, after glutaraldehyde-acrolein fixation, OsO4-uranyl acetate staining, and embedding in Epon plastic. The components of S. pannosa haustoria consisted …

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Investigation Of Implicit Methods For Solution Of The Fourier Equation, Kjell Steinar Gundersen May 1968

Investigation Of Implicit Methods For Solution Of The Fourier Equation, Kjell Steinar Gundersen

Theses and Dissertations

In recent years there has been an extensive development of finite difference techniques for solution of the transient heat conduction equation due to the availability of high-speed digital computers. It is the purpose of this paper to investigate and compare several implicit methods for the solution of the Fourier equation with regards to truncation error, round-off error and computer time which probably are among the most important factors to be considered in choosing a method.

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An Investigation Of Column Efficiency And The Relationship To Liquid Phase Distribution On Ultra-Low Loaded Glass Bead Gas Chromatographic Columns, Donald G. Nyberg May 1968

An Investigation Of Column Efficiency And The Relationship To Liquid Phase Distribution On Ultra-Low Loaded Glass Bead Gas Chromatographic Columns, Donald G. Nyberg

Theses and Dissertations

Studies have been made of column efficiencies, extra-column effects, the liquid phase mass transfer term (C_l), and liquid phase distribution at ultra-low liquid loadings on glass bead gas-liquid chromatographic columns. The advantages of using lightly loaded columns are described in detail along with a critical evaluation of the limitations of this liquid phase reduction ad infinitum. Theories have been presented by Giddings^22,23,25,30,32 which predict the mass transfer term (C_l) as a function of two extreme liquid phase distributions. The first equation assumes 100% "capillary" liquid held at the glass bead contact points and represents a very inefficient column. This prediction …

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Studies On The Levels Of Acetylcholine In The Brains Of Thiamine-Deprived And Thiamine-Antagonized Rats, Darwin Leroy Cheney May 1968

Studies On The Levels Of Acetylcholine In The Brains Of Thiamine-Deprived And Thiamine-Antagonized Rats, Darwin Leroy Cheney

Theses and Dissertations

Thiamine deficiency has been reported to cause nerve degeneration in the peripheral nervous system and hemorrhage with associated cellular damage in the central nervous system (Prickett, 1934). Koedam (1958) observed convulsions in thiamine-deficient pigeons, but convulsions have only rarely been seen in rats (Gubler, 1961). Rats treated with the thiamine antagonist, pyrithiamine (PTh)* always develop ataxia and convulsions but these neurological symptoms have never been reported in those treated with oxythiamine (OTh), another thiamine antagonist (Gubler, 1961). Hosein, Chabrol, and Freedman (1966) concluded that neurological symptoms occur only when the brain thiamine content is diminished to 2.5%o r less of …

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