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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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National Bank Examinations: Do They Provide Adequate Protection?, Arthur A. Hiltner May 1968

National Bank Examinations: Do They Provide Adequate Protection?, Arthur A. Hiltner

Theses and Dissertations

No abstract provided.

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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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Elevational Occurrence Of The Ticks Dermacentor Andersoni And Dermacentor Parumapertus In Utah County, Utah, William J. Despain May 1968

Elevational Occurrence Of The Ticks Dermacentor Andersoni And Dermacentor Parumapertus In Utah County, Utah, William J. Despain

Theses and Dissertations

Considerable research on ticks has been done since it was discovered that the Rocky Mountain wood tick, Dermacentor andersoni Stiles, was a principal vector of Rocky Mountain spotted fevero Additional disease agents of man are also transmitted by D. andersoni. This tick and a closely related species, Dermacentor parumapertus Neuman, occur commonly in Utah. The two species are often closely associated, although D. andersoni is believed to occur in the mountains, whereas D. parumapertus is in the desert valleys. Diseases affecting animals in nature are transmitted by ticks of both species. Consequently, any interaction between the two may be influential …

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The Biology And Food Habits Of Typhlodromus Mcgregori Chant (Acarina: Phytoseiidae), Brian A. Croft May 1968

The Biology And Food Habits Of Typhlodromus Mcgregori Chant (Acarina: Phytoseiidae), Brian A. Croft

Theses and Dissertations

Phytoseiid mites were first studied from an economic standpoint by Parrott et al. (1906), who described the value of Seius pomi Koch in controlling the pear leaf blister mite Eriophyes pyri (Pgst.). The taxonomic and biological studies of Garman (1948), Nesbitt (1951), and Chant ( 1959) stimulated additional interest in phytoseiids as predators, and in recent years they have been studied rather extensively as biological control agents of phytophagous mites.

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Development Of The Marital Dissatisfaction Of Mormon College Couples Over The Early Stages Of The Family Life Cycle, Roy H. Marlowe May 1968

Development Of The Marital Dissatisfaction Of Mormon College Couples Over The Early Stages Of The Family Life Cycle, Roy H. Marlowe

Theses and Dissertations

This study investigated the relationship between stages of the family life cycle during the early years of marriage and marital dissatisfaction. From this basic goal the following three hypotheses were derived and tested:
I. Marital dissatisfaction for both husband and wife is less in the first stage than in the third stage of the family life cycle.
II. For both husband and wife the ideal spouse concept is the same in stage one as in stage three of the family life cycle.
III. For both husband and wife socially undesirable perceived spouse concepts are greater while socially desirable perceived spouse …

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An Experimental Study Of The Effects Of Welding On Cold-Worked And On Heat-Treated Steels As They Correlate To Tempering And Jominy Data, Kiran Patwari May 1968

An Experimental Study Of The Effects Of Welding On Cold-Worked And On Heat-Treated Steels As They Correlate To Tempering And Jominy Data, Kiran Patwari

Theses and Dissertations

Since Bernandos of Russia in 1887 applied an electric arc to weld metals, welding has become an important method of fabrication in industry. The ever increasing use of welding on a still widening variety of materials demands m ore and m ore understanding of the basic mechanisms of welding.

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Transition From Laminar To Turbulent Flow For Dilute Guar Gum Solutions, Martin L. Palmer May 1968

Transition From Laminar To Turbulent Flow For Dilute Guar Gum Solutions, Martin L. Palmer

Theses and Dissertations

Solutions of many natural and synthetic polymers have been found to reduce turbulent friction losses in flow through pipes. The basic mechanism causing these reductions is not entirely understood although two general theories have been advanced.

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A Study On The Effectiveness Of Precipitation In The Salt Desert Shrub Type, Sam Finley Brewster May 1968

A Study On The Effectiveness Of Precipitation In The Salt Desert Shrub Type, Sam Finley Brewster

Theses and Dissertations

The purpose of this study was to measure quantitatively the effectiveness of precipitation by determining the amount and timing (i.e. distribution-in-time) of plant absorption of moisture during the summers of 1965 and 1966. In addition the effectiveness of precipitation was related to some causal factors, especially those factors which help provide a procedure for calculation of this effectiveness.

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Distribution Of The Major Plant Communities In Utah, Robert Howard Foster May 1968

Distribution Of The Major Plant Communities In Utah, Robert Howard Foster

Theses and Dissertations

Utah is a state containing a complexity of landforms in a unique continental setting which results in a variety of climatic and edaphic conditions. The variety, however, is not expressed on a latitudinal plane from north to south but is primarily altitudinal, changing from the playa or valley floors to the mountain tops. The associated arrangement of vegetation, consequently, is usually according to elevation, the elevation generally regulation precipitation and thus edaphic conditions. Slope exposure and position of landforms relative to storm-tracks are modifiers, and prevent fixed posisions for many vegetation types. Vegetation in Utah is as variable as are …

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A Taxonomic And Ecological Survey Of The Algae Of Lilly Lake, Ann C. Palmer May 1968

A Taxonomic And Ecological Survey Of The Algae Of Lilly Lake, Ann C. Palmer

Theses and Dissertations

A taxonomic and ecological survey of the algae of Lilly Lake in the Uinta Mountains, Utah, was carried on from June 1967 to November 1967. The lake is a typical acid bog lake with an average pH range of 4.5 to 6.9. Extremes of pH in the alkaline range were present due to additional factors. Algae identified included 96 genera and 208 species. These were found in many different types of microenvironmental niches. The main factors which limited the algae to definite areas of the lake were pH, water temperature, light available, and type of substrate. The predominant algal genera …

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The Distribution Of Overwintering Arthropods In A Sheep Pasture In Utah County, Utah, Richard Frank Ashley May 1968

The Distribution Of Overwintering Arthropods In A Sheep Pasture In Utah County, Utah, Richard Frank Ashley

Theses and Dissertations

The parasitic mites on mammals living in the chaparral community of Utah are practically unknown ecologically. Keegan (1953) was the first to publish on parasitic mites from Utah. He listed mites of 12 species and 9 genera from Tooele and Juab counties from hosts which included one Peromyscus truei, five P. crinitus, and 20 P. maniculatus. Brennan and Beck (1955) published on the chiggers of Utah and included a key to 38 species. Allred (1954, 1956, 1957, 1958) studied the geographical distribution, seasonal occurrence, and biology of mites found on mice of the genus Peromyscus in Utah.

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Summer Distribution Patterns Of Typhlodromus Mcgregori Chant In Utah Apple Orchards, Kenneth M. Duke May 1968

Summer Distribution Patterns Of Typhlodromus Mcgregori Chant In Utah Apple Orchards, Kenneth M. Duke

Theses and Dissertations

Phytoseiids are generally predaceousr thus it was not unusual for Jorgensen (1964) and Croft (1968) to find Typhlodromus mcgregori Chant preying on the eggs, larvae, nymphs, and adults of Panonychus ulmi (Koch) (European red mite), Bryobia rubrioculus (Scheuten) (brown mite) 11 and Tetranychus urticae Koch (= telarius (L.) of Jorgensen, 1964). Jorgensen (19649 1967) further reported that To mcgregori occurred in pomaeeous orchards in Oregon and Utah respectively.

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Airborne Pollen Of Native Prairie, Clyde A. Willman May 1968

Airborne Pollen Of Native Prairie, Clyde A. Willman

Theses and Dissertations

The study consisted of a qualitative survey of airborne pollen on the native prairie. The study site is located T. 151 N., R. 52 W., Sec. 16, Oakville Township, Grand Forks County, North Dakota. Airborne pollen was obtained using the gravity slide method with a Durham Air Sampling Device from June 15 to August 15, 19^7* Gramineae and Chenopodiaceae pollen predominated with Urticaceae, Polygonaceae, Compositae, Pinaceae, and other pollen in lesser amounts.

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Study Of Tensile Stress Versus Strain Characteristics Of Vinyl Plastic At Various Temperatures As A Function Of Strain Rate, Jitendra T. Parikh May 1968

Study Of Tensile Stress Versus Strain Characteristics Of Vinyl Plastic At Various Temperatures As A Function Of Strain Rate, Jitendra T. Parikh

Theses and Dissertations

The purpose of this thesis was to study the tensile-stress versus strain characteristics of vinyl plastic at various temperatures as a function of strain rate.

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A Similarity Model For Flow In A Turbulent Boundary Layer, Earl Clark Lemmon May 1968

A Similarity Model For Flow In A Turbulent Boundary Layer, Earl Clark Lemmon

Theses and Dissertations

One of the basic goals in engineering is to generate models which will provide a means for analytically predicting observed phenomenon. Such a model is often modified several times to obtain better results. The purpose of this study was to generate a model for an equilibrium turbulent boundary layer for steady flow over a flat plate and compare the results obtained by using the model with experimental data. Part of the objective was to also suggest ways in which the model could be modified to obtain better results.

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Developing Turbulent Flow In An Annulus, Dwight H. Kelly May 1968

Developing Turbulent Flow In An Annulus, Dwight H. Kelly

Theses and Dissertations

Turbulent flows are encountered in nearly every case where fluid motion is involved. Since turbulent flow through relatively short annular sections occurs frequently in practical applications, e.g., flow through heat exchangers, axial flow turbomachinery and jet aircraft engines, there is a need for detailed information on this subject.

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Design Of An Automatically Controlled-Feed, Constant Current Arc Generating Machine For Consumable Electrodes, Dhansukh J. Chauhan May 1968

Design Of An Automatically Controlled-Feed, Constant Current Arc Generating Machine For Consumable Electrodes, Dhansukh J. Chauhan

Theses and Dissertations

Good welding research requires accurate control of the variables involved,to achieve consistent results. The variables involved in arc welding are of the dependent and independent type. Control of the independent variables such as arc current, arc voltage and welding velocity is necessary to control the independent variables such as penetration, electrode consumption rate, etc. The purpose of this thesis was to design, develop and test an automatic welding machine which controlled the above variables within the limits required for welding research.

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Design Of An Apparatus For Study Of Stress Versus Strain As A Function Of Strain Rate In Plastics, Ashok B. Choksi May 1968

Design Of An Apparatus For Study Of Stress Versus Strain As A Function Of Strain Rate In Plastics, Ashok B. Choksi

Theses and Dissertations

As new materials are developed, it is essential to study their mechanical properties experimentally. It is easy to find properties like ultimate strength, yield strength, hardness, etc., using standard techniques. It is not possible to observe the tensile behavior of materials at high strain rates using standard equipment. Plastics are often subjected to tensile loads at various rates of loading, such as when they are used to absorb impact.

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A Comparative Study Of The Teaching Methods Of The Lds And Non-Lds Sunday School Movements In The United States Prior To 1900, Ronald Lewis Knighton May 1968

A Comparative Study Of The Teaching Methods Of The Lds And Non-Lds Sunday School Movements In The United States Prior To 1900, Ronald Lewis Knighton

Theses and Dissertations

Sunday schools were an important part of the development of religious education in the United States and in the Church of Jesus Christ of Latter-day Saints (L.D.S. Church). It was the purpose of this study (1) to analyze the teaching methods of both the L.D.S. and non-L.D.S. Sunday school movements in the United States prior to 1900; and (2) to compare the teaching methods used by these Sunday school developments and determine similarities and differences.

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The Enrichment Of Hydro-Carbon Fuel By Aluminum Powder In An Open-Hearth Furnace, Rick Sung-Tao Lee May 1968

The Enrichment Of Hydro-Carbon Fuel By Aluminum Powder In An Open-Hearth Furnace, Rick Sung-Tao Lee

Theses and Dissertations

The objective of this thesis was to study theoretically the enrichment of hydrocarbon fuels with aluminum powder for an open-hearth furnace.

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Electric Arc Welding Of Gray Cast Iron Without Preheating, Ramon Prestwich May 1968

Electric Arc Welding Of Gray Cast Iron Without Preheating, Ramon Prestwich

Theses and Dissertations

Cast irons are iron-carbon alloys with greater than 1.7% carbon. Although white, malleable and ductile cast irons are used extensively for casting work, this study is concerned with only the gray cast irons.

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The Effects Of Force Feeding On The Levels Of Pyruvate, Glucocorticoids And Glucose In The Blood And On Adrenal Weight In Thiamine-Deprived And Thiamine-Antagonized Rats, Ronald Adams Bitter May 1968

The Effects Of Force Feeding On The Levels Of Pyruvate, Glucocorticoids And Glucose In The Blood And On Adrenal Weight In Thiamine-Deprived And Thiamine-Antagonized Rats, Ronald Adams Bitter

Theses and Dissertations

The discovery of a substance in rice polishings that was useful in preventing beriberi was first shown by Grijns and Vedder (Wuest, 1962). In 1926, Jansen and Donath (Wuest, 1962} crystallized this substance which was subsequently synthesized independently by Williams and Cline (1936} and Grewe (1936). This substance was named thiamine by Williams (1936) because of its structure having the vital thiazole ring and because it was an "essential amine."

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A Reconnaissance Of Upper Cretaceous Plants From The Blackhawk Formation In Central Utah, And Their Paleoecological Significance, Lee Ross Parker Apr 1968

A Reconnaissance Of Upper Cretaceous Plants From The Blackhawk Formation In Central Utah, And Their Paleoecological Significance, Lee Ross Parker

Theses and Dissertations

A well-preserved flora has been collected from the Upper Cretaceous Blackhawk Formation near Salina, Utah. This formation is part of the Mesaverde Group and consists mostly of deltaic sediments deposited along the western margin of a Cretaceous sea. The Blackhawk Flora is comprised of the following species: Eguisetum sp., Osmunda hollickii, Allantodiopsis erosa, Saccoloma gardneri, Araucaria longifolia, Ginkgo laramiensis, Protophyllocladus polymorphus, Sequoia affinis, Geonomites imperialis, Sabalites montanus, Dryophyllum subfalcatum, Juglans similis, Cinnamomum sezannense, Magnolia ampifolia, Menispermum dauricumoides, Ficus glasconea, Ficus planicostata, Ficus puryearensis var. elongata, Myrtophyllum torreyi, Nymphaeites dawsonii, Dalbergia (?) prewilcoxiana, Salix lesquereuxii, and Trapa paulula. Two independent studies …

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Intra Company Transfer Pricing, David Odegard Apr 1968

Intra Company Transfer Pricing, David Odegard

Theses and Dissertations

No abstract provided.

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A History Of Bemidji State College: 1913 - 1937, Arthur Ophelius Lee Jr. Mar 1968

A History Of Bemidji State College: 1913 - 1937, Arthur Ophelius Lee Jr.

Theses and Dissertations

The History of Bemidji State College deals largely with the events of the years between 1907 and 1937• It is an attempt to utilize the available primary source material and from it to present a reasonably comprehensive history of the college from the time the school was first publicly discussed in 1907 through the years of the school's first president which ended in 1937* Although Bemidji College had its own unique problems and peculair qualities, it is the conclusion of the writer that the history of the college is essentially the history of most state colleges: it was a part …

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