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The Use Of Nuclear Reactions And Sims For Quantitative Depth Profiling Of Hydrogen In Amorphous Silicon, David D. Allred, G. J. Clark, C. W. White, B. R. Appleton, C. W. Magee, D. E. Carlson Aug 1977

The Use Of Nuclear Reactions And Sims For Quantitative Depth Profiling Of Hydrogen In Amorphous Silicon, David D. Allred, G. J. Clark, C. W. White, B. R. Appleton, C. W. Magee, D. E. Carlson

Faculty Publications

Depth profiles for hydrogen in amorphous silicon have been determined by the use of resonant nuclear reactions [1H(15N,αγ)12C and 1H(19F,αγ)16O] and by secondary ion mass spectroscopy (SIMS). Independent calibration procedures were used for the two techniques. Measurements were made on the same amorphous silicon film to provide a direct comparison of the two hydrogen analysis techniques. The hydrogen concentration in the bulk of the film was determined to be about 9 at % H. The SIMS results agree with the resonant nuclear reaction results to within 10%, which demonstrates that quantitative hydrogen depth profiles can be obtained by SIMS analysis …

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Ethionine-Resistant Mutants Of The Filamentous Blue-Green Alga Plectonema Boryanum /|Cby Wayne M. Hentsche, Wayne M. Hentschel Aug 1977

Ethionine-Resistant Mutants Of The Filamentous Blue-Green Alga Plectonema Boryanum /|Cby Wayne M. Hentsche, Wayne M. Hentschel

Theses and Dissertations

Ethionine-resistant mutans of Plectonema boryanum have been isolated and partially characterized. The mutant strains exhibit at least 100-fold increase in resistance to L-ethionine. The nature of the change which confers ethionine resistance is not known, but appears to result from the inability of the resistant strains to incorporate ethionine into acid-precipitable material. Initially, ethionine has no effect on the growth rate of the wild-type or the resistant strains, but several hours of exposure to the analog at a concentration greater than 0.5 μg/ml causes a marked inhibition of growth and bleaching in the wild-type cells. The onset of bleaching precedes …

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The Plant Communities Of Arches National Park, John Stevens Allan Aug 1977

The Plant Communities Of Arches National Park, John Stevens Allan

Theses and Dissertations

Arches National Park, located in southeastern Utah, lies in a transition zone between the southwestern hot desert and the western cold desert, but it is floristically most similar to the hot desert. The major plant communities are as follows: Juniper-pinyon, blackbrush, grasslands and sand dune association. Other community types occur but occupy very limited areas. All of the communities studied have a high degree of uniqueness and merit recognition as separate entities. Blackbrush showed the greatest overall similarity to other communities and was most similar to the sand dune communities. The hanging gardens were the most distinctive and covered the …

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Plant Dioecy, Ecology, Evolution And Sex Reversal, D. Carl Freeman Aug 1977

Plant Dioecy, Ecology, Evolution And Sex Reversal, D. Carl Freeman

Theses and Dissertations

The distribution of dioecious species among forty-four plant communities of western United States was examined. The dioecious habit is most prevalent in harsh environments. In many communities, over 20 percent of the species and 40 percent of the individuals are dioecious. Dioecy is most common among woody species which are pollinated by wind. It is concluded that inbreeding depression alone is insufficient to account for all known facts concerning dioecy. Disruptive selection acting upon differential success of gametes produced on sites of differing quality appears to have played a major role in producing separate sexed individuals. Dioecious species reported to …

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Real-Time Computer Optimized Scanning Potential Coulometry For Multi-Component Trace Analysis, Norman W. Petty Aug 1977

Real-Time Computer Optimized Scanning Potential Coulometry For Multi-Component Trace Analysis, Norman W. Petty

Theses and Dissertations

The instrumentation and methodology for real-time computer controlled scanning potential coulometry for multi-component trace analysis is described. The sensitivity limit was determined to be 10^-8 F for electrochemically reversible constituents. The sensitivity limit could be extended if measures were taken to compensate for the periodic signal found on the electrolysis current. Non-linear least squares curve fitting methods accurately resolved iron-platinum and silver-iron interferences to give accurate determinations for iron and silver. The resolving capability of this method was tested using theoretically generated scanning potential coulograms. The computer resolved sample constituents with a 1 to 100 concentration ratio and a formal …

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A Translation And Commentary Of The Joseph Smith Hypocephalus, Michael Dennis Rhodes Jul 1977

A Translation And Commentary Of The Joseph Smith Hypocephalus, Michael Dennis Rhodes

BYU Studies

No abstract provided.

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Ex Nihilo: The Development Of The Doctrines Of God And Creation In Early Christianity, Keith Norman Jul 1977

Ex Nihilo: The Development Of The Doctrines Of God And Creation In Early Christianity, Keith Norman

BYU Studies

No abstract provided.

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Howard Coray's Recollections Of Joseph Smith, Dean Jessee Jul 1977

Howard Coray's Recollections Of Joseph Smith, Dean Jessee

BYU Studies

No abstract provided.

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Missionaries For The Dead: The Story Of The Genealogical Missionaries Of The Nineteenth Century, Jessie L. Embry Jul 1977

Missionaries For The Dead: The Story Of The Genealogical Missionaries Of The Nineteenth Century, Jessie L. Embry

BYU Studies

No abstract provided.

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Massacre At Mountain Meadows: An American Legend And A Monumental Crime William Wise, Leonard J. Arrington Jul 1977

Massacre At Mountain Meadows: An American Legend And A Monumental Crime William Wise, Leonard J. Arrington

BYU Studies

No abstract provided.

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America B.C.: Ancient Settlers In The New World Barry Fell, John L. Sorenson Jul 1977

America B.C.: Ancient Settlers In The New World Barry Fell, John L. Sorenson

BYU Studies

No abstract provided.

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Everybody Is Ignorant, Only On Different Subjects, Eliot Butler Jul 1977

Everybody Is Ignorant, Only On Different Subjects, Eliot Butler

BYU Studies

No abstract provided.

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An Annotated List Of The Aquatic Insects Of Southeastern Idaho, Part Ii: Trichoptera, Robert L. Newell, G. Wayne Minshall Jun 1977

An Annotated List Of The Aquatic Insects Of Southeastern Idaho, Part Ii: Trichoptera, Robert L. Newell, G. Wayne Minshall

Great Basin Naturalist

Distribution records for the Trichoptera occurring in the southeastern one-third of Idaho are summarized based on published records and collections by the authors and their colleagues. The study revealed representatives of 13 families, 37 genera, and 84 species. Several species were collected for the first time in Idaho, including: Hesperophylax magnus, Limnephilus frijole and L. thorus, Psychoglypha ormiae, Ceraclea annulicornis and C. copha, Polycentropus crassicornis, Tinodes provo, and Agrypania dextra.

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The Systematics Of Crotaphytus Wislizeni, The Leopard Lizards. Part Iii. The Leopard Lizards Of The Great Basin And Adjoining Areas, With A Description Of A New Subspecies From The Lahontan Basin, Wilmer W. Tanner, Benjamin H. Banta Jun 1977

The Systematics Of Crotaphytus Wislizeni, The Leopard Lizards. Part Iii. The Leopard Lizards Of The Great Basin And Adjoining Areas, With A Description Of A New Subspecies From The Lahontan Basin, Wilmer W. Tanner, Benjamin H. Banta

Great Basin Naturalist

A general analysis of the populations of Crotaphytus wislizeni in the Great Basin is presented. A new subspecies, C. wislizeni maculosus, for the Lahontan Basin, Nevada, is described and comparisons of color pattern, some scale patterns, and skull measurements are presented.

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The Subfamily Anomiopsyllinae (Hystrichopsyllidae: Siphonaptera). I. A Revision Of The Genus Anomiopsyllus Baker, A. M. Barnes, V. J. Tipton, J. A. Wildie Jun 1977

The Subfamily Anomiopsyllinae (Hystrichopsyllidae: Siphonaptera). I. A Revision Of The Genus Anomiopsyllus Baker, A. M. Barnes, V. J. Tipton, J. A. Wildie

Great Basin Naturalist

In this taxonomic revision of the Nearctic flea genus Anomiopsyllus Baker morphological characters, phylogeny, affinities with other genera in the subfamily Anomiopsyllinae, evolutionary adaptations, geographic distribution, ecological parameters, and host preferences are discussed. Characters primarily associated with the male genitalia, in particular the number and placement of spiniforms on the movable process (finger) of the clasper, are used for species discrimination. A key to the males of the 15 species and subspecies is provided, including illustrations of both males and females.

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Child Abuse And Neglect*, Brent Q. Hafen May 1977

Child Abuse And Neglect*, Brent Q. Hafen

Issues in Religion and Psychotherapy

No abstract provided.

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Introduction Remarks, Heinz K. Meier May 1977

Introduction Remarks, Heinz K. Meier

Swiss American Historical Society Newsletter

1) The core of the current issue of the SAHS Newsletter consists of a long article on Abraham Blumer, Swiss Reformed clergyman in the Lehigh Valley during the period of the American Revolution. Professor William T. Parsons, the author, writes "Blumer and his contemporary Swiss and German church leaders" are "universally overlooked" even in specialized words on the independence era. The article thus opens a window into a little known aspect of Swiss emigration to this country. Blumer was a man of many qualities with a wide variety of interests. The reader wishes he would learn even more about him …

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Full Issue May 1977

Full Issue

Swiss American Historical Society Newsletter

No abstract provided.

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Sex-Linked Mental Retardation Without Physical Stigmata (Martin-Bell Or Renpenning Type) : A Genetic And Psychometric Approach, Craig L. Hanis Apr 1977

Sex-Linked Mental Retardation Without Physical Stigmata (Martin-Bell Or Renpenning Type) : A Genetic And Psychometric Approach, Craig L. Hanis

Theses and Dissertations

Screening the Utah State Training School (a resident institution for the mentally retarded) for kindreds having at least two institutionalized sibs generated 54 sib groups. Of these, 20-male only sibships had histories compatible with sex-linked mental retardation without physical stigmata (Martin-Bell or Renpenning type). Affected males had no characteristic physical stigmata (an appreciable number did have speech problems and/or seizure disorders) and exhibited IQs ranging from 5 to 74 with a mean of 34.2. Obligate carrier females had a mean IQ score of 91.9 (range, 79 to 106), which is as would be predicted due to random X-inactivation. Carrier females …

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Karl G. Maeser's German Background, 1828-1856: The Making Of Zion's Teacher, Douglas F. Tobler Apr 1977

Karl G. Maeser's German Background, 1828-1856: The Making Of Zion's Teacher, Douglas F. Tobler

BYU Studies

No abstract provided.

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The Apocalypse Of Adam, Stephen E. Robinson Apr 1977

The Apocalypse Of Adam, Stephen E. Robinson

BYU Studies

No abstract provided.

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The Story Of The Latter-Day Saints James B. Allen And Glen M. Leonard, S. George Ellsworth Apr 1977

The Story Of The Latter-Day Saints James B. Allen And Glen M. Leonard, S. George Ellsworth

BYU Studies

No abstract provided.

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Canopy Influence As A Factor In Determining Understory Community Composition, Richard B. Wilcox Apr 1977

Canopy Influence As A Factor In Determining Understory Community Composition, Richard B. Wilcox

Theses and Dissertations

Four tree species (i.e. Pinus ponderosa, Juiperus scopulorum, Quercus Gambelii, and Ceanothus velutinus were chosen for this study. Ten individuals of each species were selected and their associated understory communities and adjacent non-understory communities sampled. Data taken included biotic and abiotic parameters. The data was subjected to similarity index analysis, cluster analysis, discriminant analysis, and x^2 analysis. The results were confirmed by all tests. The forest canopy was shown to directly influence the understory community. The understory community is a shrub-grass dominated type while the non-understory community is an annual-forb dominated type. The different tree species were also shown to …

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The Dependence Of The Apparent Pk Of Ion Exchange Celluloses Of Ionic Strength, Paul Cyril Gillespie Apr 1977

The Dependence Of The Apparent Pk Of Ion Exchange Celluloses Of Ionic Strength, Paul Cyril Gillespie

Theses and Dissertations

Diethylaminoethyl cellulose was titrated with acid and base in various concentrations of NaCl. The pK values were determined from titration curves using a graphical technique. Two titratable groups were observed from the acid titration curve, a major and a minor group. The minor group, which represented 20% of the acid titration, was barely detectable in the base titration curve and had a salt-independent pK of 6.0. The pK of the major group was strongly salt-dependent and was approximately a linear function of log N NaCl. An equilibrium shift caused by the counter ion may explain the salt dependence. Hydrogen bonding …

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Isolation, Purification, Scanning Electron Microscopy And Bacterial Dna Uptake Of Plant Protoplasts, Bronwyn G. Hughes Apr 1977

Isolation, Purification, Scanning Electron Microscopy And Bacterial Dna Uptake Of Plant Protoplasts, Bronwyn G. Hughes

Theses and Dissertations

Protoplasts were isolated from tobacco and barley leaves in sucrose or mannitol using commercially available cellulases and macerozymes. Barley growth and protoplast isolation and purification conditions were optimized so that protoplasts were obtained in high yields free of unwanted debris and organelles. A technique for processing barley and tobacco protoplasts for examination by scanning electron microscopy was developed in which protoplasts seem to have maintained their structural integrity. Barley and tobacco protoplasts took up 3H-B. subtilis DNA, 125I-B. subtilis DNA or 125I-M. luteus DNA as a linear function of time (0-6 hr) and DNA concentration (0-200 μg/ml). Up to 16 …

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Cyrus E. Dallin: Let Justice Be Done Rell G. Francis, Robert S. Olpin Apr 1977

Cyrus E. Dallin: Let Justice Be Done Rell G. Francis, Robert S. Olpin

BYU Studies

No abstract provided.

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Introduced And Exported American Scolytidae (Coleoptera), Stephen L. Wood Mar 1977

Introduced And Exported American Scolytidae (Coleoptera), Stephen L. Wood

Great Basin Naturalist

Fourteen North, Central, and South American Scolytidae have reached areas outside of America, namely Hawaii (5), Australia (3), Southeast Asia (2), Africa (7), Europe (1), and worldwide (1). The 44 species introduced into North and Central America have originated in South America (10), Southeast Asia (15), Africa (14), or Europe (7). Four North and Central American species have extended their ranges into new territory within this region. Most of the species that breed in the bole or roots of their host were imported more than a half century ago; those imported since 1950 breed mostly in seeds, pods, dry fruits, …

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Osteology And Myology Of The Head And Neck Regions Of Callisaurus, Cophosaurus, Holbrookia, And Uma (Reptilia: Iguanidae), Douglas C. Cox, Wilmer W. Tanner Mar 1977

Osteology And Myology Of The Head And Neck Regions Of Callisaurus, Cophosaurus, Holbrookia, And Uma (Reptilia: Iguanidae), Douglas C. Cox, Wilmer W. Tanner

Great Basin Naturalist

A detailed study of the anterior osteology and myology of Callisaurus, Cophosaurus, Holbrookia, and Uma reveals the phylogenetic relationships among the sand lizards. An SPSS discriminant analysis of osteological characters combined with myological characters indicates that Callisaurus is most primitive, Cophosaurus and Holbrookia are most closely related, and Uma is the most distinct of the sand lizard genera. Because of close relationships between Cophosaurus and Holbrookia, it is postulated that earlessness evolved once, and Cophosaurus is returned to synonymy under Holbrookia.

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The Thirteenth Annual Meeting Of The Swiss American Historical Society, Bruno Gujer, Leo Schelbert Mar 1977

The Thirteenth Annual Meeting Of The Swiss American Historical Society, Bruno Gujer, Leo Schelbert

Swiss American Historical Society Newsletter

The thirteenth annual meeting of the reactivated SAHA was held on Saturday, October 30, 1976, at the Embassy of Switzerland, 2900 Cathedral Avenue, N.W., in Washington, D.C.

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Pierre-Frederic Droz: The 'American': The Story Of An Itinerant Watchmaker, Leo Schelbert Mar 1977

Pierre-Frederic Droz: The 'American': The Story Of An Itinerant Watchmaker, Leo Schelbert

Swiss American Historical Society Newsletter

Most immigrants, especially those who came to stay in a certain country for only a short while, belonged to the "inarticulate," that is to those whose experiences, joys and trials went largely unrecorded. A few of them, however, did leave rich and vivid accounts of their journeys and adventures. To them belongs Pierre-Frederic Droz, known to his countrymen as the "American" who remained for a good part of his life a man on the move.

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