Digital Commons Network^™

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

BYU Studies

No abstract provided.

Mormon Bibliography 1976, Chad J. Flake

BYU Studies

No abstract provided.

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

BYU Studies

No abstract provided.

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.

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.

The Life Cycle Of Hydroperla Crosbyi (Plecoptera: Perlodidae), Reed Y. Oberndorfer, Kenneth W. Stewart

Great Basin Naturalist

Hydroperla crosbyi in Texas exhibited a univoltine, fast life cycle over the three-year study period. Adults emerged in February–March when mean daily stream temperature reached ca. 15 C. Reared females in the lab deposited up to three egg masses. Mean fecundity of dissected females was 787 eggs/female. Oviposition in the field was observed and described.

Eggs were triangular in cross section, brown, and measured 400 µm × 535 µm. They underwent an ca. seven-month diapause until mean daily stream temperature decreased to 18 C. Eyespots appeared, and hatching followed in two to three weeks. First instar nymphs were measured and …

The Relationship Of Reduced Levels Of Atp To Inhibited Chondrogenesis In The Production Of Limb Deformity Induced By 6-Aminonicotinamide, Val C. Sheffield

Theses and Dissertations

6-aminonicotinamide (6-AN), an analogue and antagonist of nicotinamide, impairs cartilage formation and results in shortening of the limb when administered to chick embryos. 6-AN forms an abnormal NAD analogue (6-ANAD), which inhibits the activity of NAD-dependent enzymes associated with the production of ATP. The mechanism of action of 6-AN was studied by measuring the biosynthesis of protein and DNA, and the sulfation and glycosylation of chondroitin sulfate in control and 6-AN treated cartilage from 8-day chick embryos. The cartilage was also assayed for ATP levels. Incorporation of Na235SO4 was inhibited by 6 h treatment with 10 μg/ml 6-AN, whereas 3H-thymidine …

Child Abuse And Neglect*, Brent Q. Hafen

Issues in Religion and Psychotherapy

No abstract provided.

Environmental Interaction In Summer Algal Communities Of Utah Lake, Mark C. Whiting

Theses and Dissertations

Utah Lake is a shallow eutrophic lake located in central Utah. It is characterized by high nutrient and silt loads and by large algal blooms in late summer and early fall. Phytoplankton samples and environmental data were taken from June through August 1974. Phytoplankton species were identified and then quantified in a Palmer counting cell. Environmental continuum theory was employed to describe algal succession and regression analysis was used to discover interactions between algal communities and the environment. Phytoplankton communities in June were characterized by high species diversity. As the lake environment became stressed in late summer due to higher …

Accumulation And Metabolism Of Triphenyltin Hydroxide (Du-Ter) In Channel Catfish, Hal B. Jenson

Theses and Dissertations

The fate of ring-14C labeled triphenyltin hydroxide was studied in a model ecosystem consisting of soiI, water, and channel catfish (Ictalurus punctatus). Two initial levels of triphenyltin hydroxide concentration in soiI, 1.0 and 0.010 ppm, were compared. The soiI showed a gradual loss of 20 to 30% of the total 14C residues. Only about 33% of the remaining soil residues could be extracted and almost all of these were triphenyltin hydroxide. Total residues in the water were very low. Catfish muscle and viscera accumulated 14C residues continually throughout the treatment portion of the experiment. When the catfish were transferred to …

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 …

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 …

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 …

Unarmed Descent: The Achievement Of R. D. Laing, Terrell M. Butler

BYU Studies

No abstract provided.

Partitioning Of Space And Time By The Western Jumping Mouse, Zapus Princeps Utahensis Hall, John M. Deacon

Theses and Dissertations

Intraspecific competition is important in determining habitat utilization by members of a single species. Effective use of habitat may involve partitioning the available resources: space, time and food among individuals of different age, sex, and/or reproductive state. Numerous publications deal with interspecific competition (McCloskey and Fieldwick 1975, Cody 1973, Rosenzweig 1973, Stewart and Levin 1973, Gaby 1972, Brown 1971, Koshkina 1971, Sheppe 1967, Caldwell and Gentry 1965, Cameron 1964, Clough 1964, Gause 1932), but little has been written on intraspecific competition among populations of organisms in nature.

Breeding Biology Of The Double-Crested Cormorant On Utah Lake, Ronald M. Mitchell

Great Basin Naturalist

Research on the nesting of the Double-crested Cormorant (Phalacrocorax auritus auritus) was undertaken to determine the breeding biology of the bird on Utah Lake, Utah County, and the possible effects that diking Provo Bay would have on the cormorants breeding there. In 1973, two colonies in Provo Bay were visited weekly to determine laying dates, incubation period, clutch size, and hatching dates. Another colony, located on the dike of the Geneva Steel Works Reservoir near Orem, was visited daily during the spring and summer of 1973. At this colony egg-laying occurred from 13 April to 17 May. The …

Cattail Decline At Farmington Bay Waterfowl Management Area, Christine Minton Anderson

Great Basin Naturalist

For the last seven years, 1969 to 1976, a steady decline of cattails (Typha latifolia L.) has been observed at Farmington Bay Waterfowl Management Area, Davis County, Utah. Several parameters of Farmington Bay's environment that could cause or enhance a decline of the marshland vegetation were studied. These parameters included temperature, pH, phenols, oil and grease, heavy metals, fungus pathogens, and salt water intrusion from the Great Salt Lake. Elevated soluble salt concentrations were found to be responsible for the decline. Cattails are weakened or killed when they are exposed to soluble salt concentrations greater than 5.0 gm/liter, and …

Hydrological Features Of A California Coastal Fen, Don C. Erman, Kenneth B. Roby, Michael Eames

Great Basin Naturalist

A unique fen peatland, on the Califomia coast, depends on six streams for its supply of flowing, mineral-rich water. About 25 percent of the water is supplied by surface streams that had average concentrations of Ca⁺⁺ from 0.15 meq/1 to 0.32 meq/1 and of Mg⁺⁺ from 0.25 meq/1 to 0.47 meq/1. During the dry summer period oxygen concentration and pH were lower in the central area than in the ten margins. Water flow near the margins maintains high O₂, pH, and cation content. The fen ranges from 4 m to over 11 m in depth, but …

Observations On The Distribution Of Microorganisms In Desert Soil, A. T. Vollmer, F. Au, S. A. Bamberg

Great Basin Naturalist

Population estimates of fungi, bacteria, and actinomycetes in desert soil were determined with respect to soil depth and distance from shrubs. In general the highest numbers of microbes were found at the shrub base; the lowest numbers were found in the interspaces. While the total number of organisms usually declined in deeper soil, the relative importance of the actinomycetes increased. These population trends are attributed to substrate availability and utilization and interspecific interactions.

As the soils became drier and warmer the total number of microorganisms decreased. Mold populations remained at about the same level during the study. While the numbers …

Front Matter, Vol. 37 No. 1

Great Basin Naturalist

No abstract provided.

A Mountain Cercocarpus Population—Revisited, E. S. Nixon

Great Basin Naturalist

A mountain cercocarpus (Cercocarpus montanus Raf.) population was analyzed first in 1965 and again in 1975 to gain insight into the growth and reproduction of this species. The basis for comparison was plant height and number of basal stems. Growth (measured by height) was slow during the 10-year period, with plants on the northeast-facing slope having an average increase of 37 cm and those on the southwest-facing slope maintaining relatively the same average height. There was an overall decrease in average number of base stems for plants positioned on both slopes.

Preliminary Mammal Survey Of Fossil Butte National Monument, Wyoming, Tim W. Clark

Great Basin Naturalist

The mammalian community of Fossil Butte National Monument, Wyoming, consisted of at least 45 species. Snap trap sampling of the smaller species combined with sight and sign observations of the larger species formed the basis of this preliminary survey in the summers of 1974 and 1975. Snap-trapping samples (2880 trap days) yielded 44 least chipmunks and 89 deer mice. The distribution of all species was characterized by plant community occupancy. Heavy domestic livestock use of the communities nearest water has resulted in severe alteration in community structure; this has probably affected the distribution and abundance of at least some of …

Home Range Of The Western Jumping Mouse, Zapus Princeps, In The Colorado Rocky Mountains, Nathaniel Stinson Jr.

Great Basin Naturalist

Western jumping mice, Zapus princeps, were live-trapped during the summer of 1975 in an aspen forest in the Front Range of the Colorado Rocky Mountains. Home range sizes were calculated using the exclusive boundary strip method, and it was discovered that males had larger home ranges (298–3315 m², x̄ = 1743 m²) than females (680–1275 m², x̄ = 1041 m²). Mean range length was 96.5 m for males and 78.5 m for females. Spatial relationships showed that females tended to be more territorial than males, based on the females' higher percentage of …

Full Issue, Vol. 37 No. 1

Great Basin Naturalist

No abstract provided.

Cytosol Binding Of Steroid Hormones In Sheep Brains And Pituitaries, David Carl Marcusen

Theses and Dissertations

The uptake and binding of tritiated cortisol, corticosterone, and dexamethasone in cytosols isolated from various regions of non-adrenalectomized (intact) and adrenalectomized sheep brains and pituitaries were studied. [3H]-cortisol and [3H]-corticosterone were bound preferentially by cytosols from the hippocampal and septal regions of the brain, whereas, [3H]-dexamethasone was preferentially bound by cytosol from the pituitary. Cytosols isolated from the brains of adrenalectomized sheep bound significantly more [3H]-corticosterone than did cytosol from the brains of intact animals. Pre-incubation of cytosols from the hippocampus of adrenalectomized animals with non-radioactive testosterone or estradiol did not significantly block the subsequent binding of [3H]-cortisol. Results of …

Intermolecular Potential Surfaces From Electron Gas Methods. Ii. Angle And Distance Dependence Of The A’ And A” Ar–No(X^2ii) Interactions, Glen C. Nielson, Gregory A. Parker, Russell T. Pack

Faculty Publications

Angle dependent intermolecular potential energy surfaces for the two states (2A’ and 2A”) that arise from the interaction of ground (X^2II) state NO with Ar are calculated using the electron gas model to obtain the short range interactions. The average and difference of the two interaction energies are fit to analytic forms convenient for use in scattering calculations and joined smoothly onto the long range van der Waals potential previously determined. The results, which appear to be of useful accuracy, and the applicability of the electron gas model to such open shell–closed shell interactions are discussed.

The Relation Of Mormon Parental Religiosity And Family Size On Children's Educational, Occupational And Income Success, Marvyn William Hogenson

Theses and Dissertations

There have been several significant studies during recent years concerning the relationship between parental socioeconomic background and achievement. This research examines religious influence, parental control, family size, support, and educational encouragement which in turn influence educational and occupational attainment.

Data were obtained from questionnaires completed by 843 married Mormon men from Canada.

Only respondent's religious activity, parental support, and educational encouragement were significant in determining the occupational and educational attainment of the respondent. Family size and parental control were not significant.

Typification And Nomenclature Of Hedysarum Boreale Nutt. (Leguminosae), Terry E. Northstrom

Great Basin Naturalist

The holotype of Hedysarum boreale Nutt. is convarietal with natural populations now known as Hedysarum boreale Nutt. var. cinerascens (Rydb.) Rollins instead of var. boreale. The new combination Hedysarum boreale Nutt. var. rivulare (Williams) Northstrom is proposed for populations formerly known as var. boreale.

Southern Range Extension Of The White Fir Dwarf Mistletoe In Arizona, Robert L. Mathiasen

Great Basin Naturalist

Discovery of a small isolated population of the white fir dwarf mistletoe, Arceuthobium abietinum f. sp. concoloris, in the Chiricahua Mountains of southeastern Arizona extends the southern distribution of this mistletoe 300 miles. The rare occurrence of the mistletoe in the southwest suggests that it once had a more southerly distribution but only survived past climatic changes in a few locations.

Observations On Courtship Behavior Of The Desert Tortoise, Jeffrey Howard Black

Great Basin Naturalist

Desert tortoises (Gopherus agassizi) from Utah showed courtship behavior consisting of a complex series of behavioral elements.