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The Influence Of Temperature And Some Other Factors On The Biological And Nonbiological Oxidation Of Chalcopyrite, Pyrite And Copper Sulfide, Ezra Revier Palmer Aug 1961

The Influence Of Temperature And Some Other Factors On The Biological And Nonbiological Oxidation Of Chalcopyrite, Pyrite And Copper Sulfide, Ezra Revier Palmer

Theses and Dissertations

The purpose of this study was: (1) to find the effect of temperature on the wet oxidation of chalcopyrite, pyrite, and copper sulfide over the biological and nonbiological range; (2) to determine the influence of ferrous and ferric iron and free oxygen(air) on the oxidation. The sulfide minerals studied were oxidized over a range of temperatures between 25° to 75° C. The optimum biological oxidation occurred near 35° C. The nonbiological oxidation was very slow at low temperatures but increased with increasing temperature. The effect of solutions used in leaching the various sulfides over the temperature range differred. A synthetic …

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The Design Of A Six Specimen Tensile Fatigue Machine, Charles Mark Percival Aug 1961

The Design Of A Six Specimen Tensile Fatigue Machine, Charles Mark Percival

Theses and Dissertations

Although metal fatigue has been recognized for many years and during that time many persons have tried to find the explanation for it, there is still not a complete theory concerning this phenomenon. Metal fatigue is one of the major problems the modem designer must face. If the design techniques are to progress as other technological advances are made, it is evident that it will involve a better understanding of metal fatigue.

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Design Of An Air Stabilized Plasma Arc, William Robert Clarke Aug 1961

Design Of An Air Stabilized Plasma Arc, William Robert Clarke

Theses and Dissertations

The plasma-arc generator (see figure 1, 2) has been used for several years as an invaluable ground test facility in which the gas stagnation properties of hypervelocity flight may be reproduced. The plasma is produced by shorting an electric arc between two electrodes; then directing a gas stream through the arc. The gas stream is thus heated to a ''temperature " of forty to fifty thousand degrees Farenheit. At this temperature the gas is in a state of partial ionization termed "plasma". The plasma stream is then constricted and directed by a nozzle into a test chamber and over the …

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An Analysis Of A Hybrid Complex Involving Agropyron Subsecundum, Agropyron Trachycaulum And Elymus Glaucus, Lewis Kay Shumway Aug 1961

An Analysis Of A Hybrid Complex Involving Agropyron Subsecundum, Agropyron Trachycaulum And Elymus Glaucus, Lewis Kay Shumway

Theses and Dissertations

In the past twenty years many workers have made contributions to a better understanding of hybridization and introgression through studies of members of the grass family. The present study is an attempt to increase the understanding of the importance and amount of hybridization and introgression in members of the Tribe Hordeae. This study is concerned with a hybrid complex involving Agropyron subsecundum (Link) Hitchc. (bearded wheatgrass), Agropyron trachycaulum (Link) Malte (slender wheatgrass) and Elymus glaucus Buckl. (blue wild rye).

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An Ecological Study Of An Exclosure In The Mountain Brush Vegetation Of The Wasatch Mountains, Utah, Elray S. Nixon Aug 1961

An Ecological Study Of An Exclosure In The Mountain Brush Vegetation Of The Wasatch Mountains, Utah, Elray S. Nixon

Theses and Dissertations

This is a comparative study of the vegetation and soils of an exclosure in the mountain brush vegetation of the Wasatch Mountains, Utah. The exclosure was fenced and initially analyzed during the summers of 1949-1950. The study area is located in Pole Canyon in the Uinta National Forest, a few miles northeast of Provo, Utah. The dominant woody species of the vegetation in the exclosure are big toothed maple (Acer grandidentatum) and Gambel oak (Quercus gambelii). After settlement of the area in and around Provo, Pole Canyon became overgrazed by livestock. Since 1949 the area has been protected from grazing. …

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A Morphological Study Of Some Larval Ticks Of The Genus Dermacentor With Emphasis On Structures Of Possible Taxonomic Importance, Richard Grant Robertson Jul 1961

A Morphological Study Of Some Larval Ticks Of The Genus Dermacentor With Emphasis On Structures Of Possible Taxonomic Importance, Richard Grant Robertson

Theses and Dissertations

This study was undertaken to evaluate and determine morphological characteristics which might prove valuable in the identification of the larvae of the following species of ticks of the genus Dermacentor Koch: D. albipictus Packard, D. andersoni Stiles, D. hunteri Bishop, D. parumapertus Neuman, and D. variabilis Say. A taxonomic key for the identification of all of the Canadian and United States species of the larvae of the genus Dermacentor Koch cannot be constructed until specimens of D. halli and D. occidentalis have been examined. However, the followng conclusions were reached regarding the species studied: 1. Position of setae is of …

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A History Of Formal Religious Instruction By The Church Of Jesus Christ Of Latter-Day Saints In Alberta, 1890-1960, Phyllip G. Redd Jul 1961

A History Of Formal Religious Instruction By The Church Of Jesus Christ Of Latter-Day Saints In Alberta, 1890-1960, Phyllip G. Redd

Theses and Dissertations

The purpose of this thesis is to bring to light and to assemble the history of formal religious instruction by the Church of Jesus Christ of Latter-day Saints in Alberta, Canada, for the period 1890 to 1960.

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Classification And Distribution Of The Native Trees Of Utah, Kimball Steward Erdmann Jun 1961

Classification And Distribution Of The Native Trees Of Utah, Kimball Steward Erdmann

Theses and Dissertations

This study is an attempt to consolidate the information already known about the trees of Utah and to extend our knowledge of these trees. An intensive study was made of the available literature. The tree specimens of the herbaria of the Utah State University, University of Utah, Brigham Young University and the Regional Office of the Forest Service at Ogden were examined. These studies were supplemented with extensive field work in various parts of the state. From this information, keys and descriptions of the genera and species were written and distribution maps for each tree and illustrations of many of …

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Bark Beetles Of The Genus Dryocoetes (Coleoptera: Scolytidae) In North America, Donald Edward Bright Jr. Jun 1961

Bark Beetles Of The Genus Dryocoetes (Coleoptera: Scolytidae) In North America, Donald Edward Bright Jr.

Theses and Dissertations

The genus Dryocoetes is widely distributed in Europe, Asia, North America and Central America. It consists of about sixty species, seven of which occur in North America.

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Description Of A New Species Of Salamander From Panama, Wilmer W. Tanner, Arden H. Brame Jr. May 1961

Description Of A New Species Of Salamander From Panama, Wilmer W. Tanner, Arden H. Brame Jr.

Great Basin Naturalist

No abstract provided.

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Studies In Nearctic Desert Sand Dune Orthoptera, Part Iii. A New Species Of Cibolacris From Northern Chihuahua, Mexico, Ernest R. Tinkham May 1961

Studies In Nearctic Desert Sand Dune Orthoptera, Part Iii. A New Species Of Cibolacris From Northern Chihuahua, Mexico, Ernest R. Tinkham

Great Basin Naturalist

No abstract provided.

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End Matter, Vol. 21 No. 1–2 May 1961

End Matter, Vol. 21 No. 1–2

Great Basin Naturalist

No abstract provided.

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Front Matter, Vol. 21 No. 1–2 May 1961

Front Matter, Vol. 21 No. 1–2

Great Basin Naturalist

No abstract provided.

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Undescribed Species Of Western Nearctic Tipulidae (Diptera). Iv., Charles P. Alexander May 1961

Undescribed Species Of Western Nearctic Tipulidae (Diptera). Iv., Charles P. Alexander

Great Basin Naturalist

No abstract provided.

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A New Dactylipalpus (Coleoptera: Scolytidae) From The Philippine Islands, Stephen L. Wood May 1961

A New Dactylipalpus (Coleoptera: Scolytidae) From The Philippine Islands, Stephen L. Wood

Great Basin Naturalist

No abstract provided.

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A New Species Of Cinara From Delaware (Aphididae), F. C. Hottes May 1961

A New Species Of Cinara From Delaware (Aphididae), F. C. Hottes

Great Basin Naturalist

No abstract provided.

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A New Beetle Mite From Utah (Oribatei: Gymnodamaeidae), Harold G. Higgins May 1961

A New Beetle Mite From Utah (Oribatei: Gymnodamaeidae), Harold G. Higgins

Great Basin Naturalist

No abstract provided.

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Full Issue, Vol. 21 No. 1–2 May 1961

Full Issue, Vol. 21 No. 1–2

Great Basin Naturalist

No abstract provided.

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A New Species Of Cinara From Colorado (Aphididae), F. C. Hottes May 1961

A New Species Of Cinara From Colorado (Aphididae), F. C. Hottes

Great Basin Naturalist

No abstract provided.

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New Records And Species Of Scolytidae (Coleoptera) From Colombia, Stephen L. Wood May 1961

New Records And Species Of Scolytidae (Coleoptera) From Colombia, Stephen L. Wood

Great Basin Naturalist

No abstract provided.

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A Comparative Study Of The Axillary Sclerites In Coleoptera, Howard P. Shurtleff May 1961

A Comparative Study Of The Axillary Sclerites In Coleoptera, Howard P. Shurtleff

Theses and Dissertations

The axillary sclerites of 69 species representing 52 families of the order Coleoptera were examined and illustrations prepared of most or them. A description is given for the typical axillary sclerites and the deviations in form from this pattern are discussed for the major groups of beetles. The phylogenetic relationships between some families, and other groups, are pointed out based on the morphology of the axillary sclerites. Phyletic groups in Adephaga are characterized by the axillary sclerites, but in the Polyphaga variations are too numerous and inconsistant to be useful in determining phyletic trends.

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Art And The Church, Conan E. Mathews Apr 1961

Art And The Church, Conan E. Mathews

BYU Studies

Art and artists in the Church of Jesus Christ of Latter-day Saints are in a interesting position concerning their place in art history. As the Church seeks to define what role art will play in its worship, LDS artists have a responsibility to create art that will reflect the unique spirit and depth of their religious beliefs.

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Jb: Successful Theatre Versus “Godless” Theology, Preston R. Gledhill Apr 1961

Jb: Successful Theatre Versus “Godless” Theology, Preston R. Gledhill

BYU Studies

The author asks all artists to be more original, idealistic, and inspirational and less didactic and commemorative.

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Theodore Dreiser: Naturalist Or Theist?, Dustin Heuston Apr 1961

Theodore Dreiser: Naturalist Or Theist?, Dustin Heuston

BYU Studies

American author Theodore Dreiser is often considered a naturalist. However, Dreiser's later works reveal a more theistic philosophy. A close examination, especially of Dreiser's last two works, reveals that he was a theist who, for a time, explored naturalist thought.

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Thoughts On Reading Croce's Theory Of Aesthetic, Stephen L. Alley Apr 1961

Thoughts On Reading Croce's Theory Of Aesthetic, Stephen L. Alley

BYU Studies

The author summarizes highlights from Croce's Theory of Aesthetic and its implications on artistic intuition and expression.

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Miss Helen, Max Golightly Apr 1961

Miss Helen, Max Golightly

BYU Studies

No abstract provided.

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Mountain Parable, Thelma J. Lund Apr 1961

Mountain Parable, Thelma J. Lund

BYU Studies

No abstract provided.

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Dostoevsky On Crime And Revolution: A Study In Russian Nihilism, Louis C. Midgley Apr 1961

Dostoevsky On Crime And Revolution: A Study In Russian Nihilism, Louis C. Midgley

BYU Studies

Although Dostoevsky deserves praise for his literary accomplishments, his ability to write does not necessarily translate into political savvy. Examining Dostoevsky's views on liberalism, nihilism, and socialism, as expressed in The Possessed, The Brothers Karamazov, The Diary of a Writer, and other works, the author concludes that Dostoevsky's faith in "holy Russia" was misplaced even as his vision of the violence resulting from nihilist thinking was more accurate.

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When All Has Been Given, Edward Hart Apr 1961

When All Has Been Given, Edward Hart

BYU Studies

No abstract provided.

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Valse From “Little Dance Suite, Opus 39”, Carl Fuerstner Apr 1961

Valse From “Little Dance Suite, Opus 39”, Carl Fuerstner

BYU Studies

No abstract provided.

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