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Articles 31 - 60 of 82
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Laser Levitation Of Solid Particles For Combustion And Gasification Applications, Skigh E. Lewis
Laser Levitation Of Solid Particles For Combustion And Gasification Applications, Skigh E. Lewis
Theses and Dissertations
This dissertation details theoretical and experimental work in the development of a novel combustion diagnostic: laser levitation of solid particles. Theoretical analyses of the forces involved in the suspension of solid particles in a laser beam provide a comprehensive description of the levitation mechanism. Experimental work provides extensive observations and data that describe each of the forces involved, including results from detailed models. Theoretical models establish that a free-convective drag force, light scattering, photon momentum, and other minor forces contribute to the trapping mechanism. The theory quantitatively predicts particle temperature and magnitudes of each of the forces involved. Experimental measurements …
Multiple-Criteria Decision Making For Integrated Watershed Management In The Ramian Watershed, Golestan, Iran, Amir Sadoddin, Vahedberdi Sheikh, Raoof Mostafazade, Mohammad Ghassem Halili
Multiple-Criteria Decision Making For Integrated Watershed Management In The Ramian Watershed, Golestan, Iran, Amir Sadoddin, Vahedberdi Sheikh, Raoof Mostafazade, Mohammad Ghassem Halili
International Congress on Environmental Modelling and Software
This research has concentrated on the physical and socio-economic impacts of vegetation-based management scenarios targeting on flooding and soil erosion issues in the Ramian sub-watersheds. The Ramian watershed with an approximate area of 24000 ha is located in Golestan, Iran. For each sub-watershed, four biological actions (activities) and 16 management scenarios have been considered. Physical impacts have been studied using the SCS (Soil Conservation Service) hydrologic model and the EPM (Erosion Potential Method) model. Economic and social impacts have been evaluated using the cost/benefit analysis as well as the examination of the results of a social survey. Some physical, social, …
Pyridinium Bisretinoids: Synthesis And Photoactivated Cytotoxicity, Junping Gao
Pyridinium Bisretinoids: Synthesis And Photoactivated Cytotoxicity, Junping Gao
Theses and Dissertations
This thesis discusses pyridinium bisretinoid compounds (PBRs), which were prepared for two purposes: 1) to use them as standards for detection of novel fluorophores in human RPE cells, which may be involved in age-related macular degeneration (AMD), and 2) to use them in the development of a targeted and triggered drug delivery system for cancer therapy. We prepared a selection of PBRs using a one-pot biomimetic method; synthesis, mechanisms for formation, and characterization of these compounds is described. We also explored the photoreactivity of three novel PBR compounds and found that these PBRs form oxidation products under blue-light irradiation. The …
Psodascript: Applying Advanced Language Constructs To Open-Source Phylogenetic Search, Hyrum Carroll, Mark J. Clement, Jonathan Krein, Quinn O. Snell, Adam R. Teichert
Psodascript: Applying Advanced Language Constructs To Open-Source Phylogenetic Search, Hyrum Carroll, Mark J. Clement, Jonathan Krein, Quinn O. Snell, Adam R. Teichert
Faculty Publications
Due to the immensity of phylogenetic tree space for large data sets, researches must rely on heuristic searches to infer reasonable phylogenies. By designing meta-searches which appropriately combine a variety of heuristics and parameter settings, researchers can significantly improve the performance of heuristic searches. Advanced language constructs in the open-source PSODA project—including variables, mathematical and logical expressions, conditional statements, and user-defined commands—give researchers a better framework for the exploration and exploitation of phylogenetic meta-search algorithms. PSODA’s approach to scripting meta-search algorithms is unique among open-source packages and addresses several limitations of other phylogenetic applications.
An Adaptive Bayesian Approach To Bernoulli-Response Clinical Trials, Andrew W. Stacey
An Adaptive Bayesian Approach To Bernoulli-Response Clinical Trials, Andrew W. Stacey
Theses and Dissertations
Traditional clinical trials have been inefficient in their methods of dose finding and dose allocation. In this paper a four-parameter logistic equation is used to model the outcome of Bernoulli-response clinical trials. A Bayesian adaptive design is used to fit the logistic equation to the dose-response curve of Phase II and Phase III clinical trials. Because of inherent restrictions in the logistic model, symmetric candidate densities cannot be used, thereby creating asymmetric jumping rules inside the Markov chain Monte Carlo algorithm. An order restricted Metropolis-Hastings algorithm is implemented to account for these limitations. Modeling clinical trials in a Bayesian framework …
Development Of Informative Priors In Microarray Studies, Kassandra M. Fronczyk
Development Of Informative Priors In Microarray Studies, Kassandra M. Fronczyk
Theses and Dissertations
Microarrays measure the abundance of DNA transcripts for thousands of gene sequences, simultaneously facilitating genomic comparisons across tissue types or disease status. These experiments are used to understand fundamental aspects of growth and development and to explore the underlying genetic causes of many diseases. The data from most microarray studies are found in open-access online databases. Bayesian models are ideal for the analysis of microarray data because of their ability to integrate prior information; however, most current Bayesian analyses use empirical or flat priors. We present a Perl script to build an informative prior by mining online databases for similar …
Phylogeographic Analyses Of Obligate And Facultative Cave Crayfish Species On The Cumberland Plateau Of The Southern Appalachians, Jennifer Elizabeth Buhay
Phylogeographic Analyses Of Obligate And Facultative Cave Crayfish Species On The Cumberland Plateau Of The Southern Appalachians, Jennifer Elizabeth Buhay
Theses and Dissertations
Cave systems and their unique biota are widely viewed as highly endangered, yet very little is known about basic life history, ecology, distributions, habitat requirements, and evolutionary relationships of subterranean species. The crux of the problem in cave studies is the assumption that traditionally defined morpho-species represent distinct evolutionary lineages. Convergence is exhibited in the morphologies of many animal groups, vertebrate and invertebrate, which leads to confusion in diagnosing species' boundaries, geographic distributions, gene flow routes, and imperilment. This dissertation research includes phylogeographic analyses of freshwater cave-dwelling crayfishes in the Southern Appalachians, a global hotspot of subterranean biodiversity. By examining …
Geologic Map And Structural Analysis Of The Twin Rocks 7.5 Minute Quadrangle, Wayne County, Utah, Samuel C. Sorber
Geologic Map And Structural Analysis Of The Twin Rocks 7.5 Minute Quadrangle, Wayne County, Utah, Samuel C. Sorber
Theses and Dissertations
A new geologic map of the Twin Rocks 7.5 minute quadrangle primarily located within Capitol Reef National Park, south-central Utah, provides stratigraphic and structural detail not previously available. This map has also been instrumental in understanding the evolution and development of fluvial terraces associated with Sulfur Creek and the structural geology of the backlimb of the Miners Mountain uplift. Nine bedrock stratigraphic formations and eight types of Quaternary deposits were mapped throughout the quadrangle. Bedrock stratigraphy ranges in age from Permian to Jurassic. New details absent on previous geologic maps include members of the Chinle and Moenkopi Formations and the …
Geologic Map Of The Golden Throne Quadrangle, Wayne And Garfield Counties, Utah, Daniel H. Martin
Geologic Map Of The Golden Throne Quadrangle, Wayne And Garfield Counties, Utah, Daniel H. Martin
Theses and Dissertations
The Golden Throne Quadrangle is located within Capitol Reef National Park, south-central Utah. Geologic mapping of this 1:24,000 scale 7.5 minute quadrangle began in 2003 as the National Parks Service desired to have geologic maps at this scale produced within the park. Stratigraphically, ten bedrock formations and ten Quaternary deposits are exposed within the Golden Throne Quadrangle. Geologic formations range in age from Permian to Jurassic. This map contains details not included on previous geologic maps including; the members of the Carmel, Chinle, and Moenkopi Formations. Additionally, the Page Sandstone is herein mapped as an independent unit. Structurally the Golden …
Dual-Stage Thermally Actuated Surface-Micromachined Nanopositioners, Neal B. Hubbard
Dual-Stage Thermally Actuated Surface-Micromachined Nanopositioners, Neal B. Hubbard
Theses and Dissertations
Nanopositioners have been developed with electrostatic, piezoelectric, magnetic, thermal, and electrochemical actuators. They move with as many as six degrees of freedom; some are composed of multiple stages that stack together. Both macro-scale and micro-scale nanopositioners have been fabricated. A summary of recent research in micropositioning and nanopositioning is presented to set the background for this work. This research project demonstrates that a dual-stage nanopositioner can be created with microelectromechanical systems technology such that the two stages are integrated on a single silicon chip. A nanopositioner is presented that has two stages, one for coarse motion and one for fine …
Environmental Characteristics And Benthic Invertebrate Assemblages In Colorado Mountain Lakes, Brenda Moraska Lafrancois, Daren M. Carlisle, Koren R. Nydick, Brett M. Johnson, Jill S. Baron
Environmental Characteristics And Benthic Invertebrate Assemblages In Colorado Mountain Lakes, Brenda Moraska Lafrancois, Daren M. Carlisle, Koren R. Nydick, Brett M. Johnson, Jill S. Baron
Western North American Naturalist
Twenty-two high-elevation lakes (>3000 m) in Rocky Mountain National Park and Indian Peaks Wilderness Area, Colorado, were surveyed during summer 1998 to explore relationships among benthic invertebrates, water chemistry (particularly nitrate concentrations), and other environmental variables. Water samples were collected from the deepest portion of each lake and analyzed for ions and other water chemistry parameters. Benthic invertebrates were collected from the littoral zone using both a sweep net and Hess sampler. Physical and geographical measurements were derived from maps. Relationships among benthic invertebrate assemblages and environmental variables were examined using canonical correspondence analysis, and the importance of sampling …
C[Harles] Lynn Hayward, Herbert H. Frost, Wilmer W. Tanner
C[Harles] Lynn Hayward, Herbert H. Frost, Wilmer W. Tanner
Great Basin Naturalist
No abstract provided.
Carroll Quigley On The Matrix Of Civilizations: A Dialectic, Arthur S. Iberall
Carroll Quigley On The Matrix Of Civilizations: A Dialectic, Arthur S. Iberall
Comparative Civilizations Review
No abstract provided.
Trypanoplasma Atraria Sp. N. (Kinetoplastida: Bodonidae) In Fishes From The Sevier River Drainage, Utah, J. Stephen Cranney, Richard A. Heckmann
Trypanoplasma Atraria Sp. N. (Kinetoplastida: Bodonidae) In Fishes From The Sevier River Drainage, Utah, J. Stephen Cranney, Richard A. Heckmann
Great Basin Naturalist
A total of 181 fishes belonging to 10 species were captured near Richfield, Utah, and examined for parasites. A new species of hemoflagellate, Trypanoplasma atraria sp. n., was observed in 3 species: Utah chub (Gila atraria [Girard]), redside shiner (Richardsonius balteatus [Richardson]), and speckled dace (Rhinichthys osculus [Girard]). Seven other species of fishes examined in the study area were negative for T. atraria sp. n. The salmonid leech, Piscicola salmositica (Meyer), collected in the same area harbored developmental stages of Trypanoplasma, suggesting a possible leech vector for the hemoflagellate. Characteristics of Trypanoplasma atraria sp. n. place …
Interview: The Biological Evidence For Homosexuality Reappraised, William Byne
Interview: The Biological Evidence For Homosexuality Reappraised, William Byne
Issues in Religion and Psychotherapy
Because of recent media reports and public interest in the role of biological and genetic factors in the development of homosexuality, the editor decided some information regarding this topic might be useful for AMCAP members. Dr. William Byne has recently published several professional articles in which he has criticized the biological and genetic evidence relevant to the etiology of homosexuality. Dr. Byne graciously consented to be interviewed for the AMCAP Journal.
Evidences Of A Christian Population In The Egyptian Fayum And Genetic And Textile Studies Of The Akhmim Noble Mummies, C. Wilfred Griggs, Marvin C. Kuchar, Scott R. Woodward, Mark J. Rowe, R. Paul Evans, Naguib Kanawati, Nasry Iskander
Evidences Of A Christian Population In The Egyptian Fayum And Genetic And Textile Studies Of The Akhmim Noble Mummies, C. Wilfred Griggs, Marvin C. Kuchar, Scott R. Woodward, Mark J. Rowe, R. Paul Evans, Naguib Kanawati, Nasry Iskander
BYU Studies
No abstract provided.
Supplement To The 1987 Bibliography, Stephen L. Wood, Donald E. Bright Jr.
Supplement To The 1987 Bibliography, Stephen L. Wood, Donald E. Bright Jr.
Great Basin Naturalist Memoirs
No abstract provided.
Species Composition, Emergence, And Habitat Preferences Of Trichoptera Of The Sagehen Creek Basin, California, Usa, Nancy A. Erman
Species Composition, Emergence, And Habitat Preferences Of Trichoptera Of The Sagehen Creek Basin, California, Usa, Nancy A. Erman
Great Basin Naturalist
An extensive study of larvae and adult Trichoptera of the Sagehen Creek basin, Sierra Nevada, California, USA, revealed 77 species representing 14 families and 41 genera. Twenty-six species were restricted to small water bodies (spring sources, seeps, spring streams, temporary ponds, and intermittent streams); 27 were restricted to Sagehen Creek, a second-order stream, and the mouths of two large spring streams. Similarity between species caught at black lights and those in emergence traps was 43%. There were two major peaks in adult emergence by species, midsummer and late summer-fall. A few species emerged during winter or throughout most of the …
Observations On The Ecology And Trophic Status Of Lake Tahoe (Nevada And California, Usa) Based On The Algae From Three Independent Surveys (1965–1985), Sam L. Vanlandingham
Observations On The Ecology And Trophic Status Of Lake Tahoe (Nevada And California, Usa) Based On The Algae From Three Independent Surveys (1965–1985), Sam L. Vanlandingham
Great Basin Naturalist
Numerous physical, chemical, and biological criteria evidently confirm that Lake Tahoe is oligotrophic. However, detailed examination of the ecology and trophic status status of algae (mostly diatoms) from Lake Tahoe taken from three independent, long-term sampling programs aided in interpretation of plankton and periphyton algal communities by spectral analysis (supported by computerized data synthesis) and "ultra-oligotraphic" lakes over the world from which future studies may reveal algal communities that may be described as more mesotrophic and/or eutrophic than oligotrophic. Lake Tahoe probably is not as oligotrophic as is generally believed, and the indicator algae in it are not as accurate …
T–Z, Anonymous, Stephen L. Wood, Donald E. Bright Jr.
T–Z, Anonymous, Stephen L. Wood, Donald E. Bright Jr.
Great Basin Naturalist Memoirs
No abstract provided.
New Records And Comprehensive List Of The Algal Taxa Of Utah Lake, Utah, Usa, Samuel R. Rushforth, Lorin E. Squires
New Records And Comprehensive List Of The Algal Taxa Of Utah Lake, Utah, Usa, Samuel R. Rushforth, Lorin E. Squires
Great Basin Naturalist
Utah Lake is a slightly saline ecosystem containing more than 700 algal taxa. During the past decade a total of 106 algal taxa has been found that has not previously been reported in this water. These new records are reported herein, together with a comprehensive listing of all algal taxa reported from Utah Lake to date.
Diatoms In Recent Bottom Sediments And Trophic Status Of Eight Lakes And Reservoirs In Northeastern Utah, Judith A. Grimes, Samuel R. Rushforth, Jack D. Brotherson, William E. Evenson
Diatoms In Recent Bottom Sediments And Trophic Status Of Eight Lakes And Reservoirs In Northeastern Utah, Judith A. Grimes, Samuel R. Rushforth, Jack D. Brotherson, William E. Evenson
Great Basin Naturalist
Recent bottom sediments of eight lakes and reservoirs in northeastern Utah were examined. One hundred and sixty-four diatom taxa were identified and their relative abundances determined. Seven stand associations were evident by cluster analysis of similarity indices. These association patterns mirrored trophic status of the waters. Shannon–Wiener species diversity values were also determined. The diversities fell in patterns that were similar to the stand associations determined by cluster analysis. The most prevalent diatom taxa encountered in this study were found mostly in eutrophic waters. These taxa included Stephanodiscus astraea, Stephanodiscus astraea var. minutula, Asterionella formosa, and Fragilaria crotonensis. A wide …
Methods, Stephen L. Wood
Systematic Section, Stephen L. Wood
Systematic Section, Stephen L. Wood
Great Basin Naturalist Memoirs
No abstract provided.
Macroinvertebrate And Zooplankton Communities Of Utah Lake: A Review Of The Literature, James R. Barnes, Thomas W. Toole
Macroinvertebrate And Zooplankton Communities Of Utah Lake: A Review Of The Literature, James R. Barnes, Thomas W. Toole
Great Basin Naturalist Memoirs
Early studies on the macroinvertebrates and zooplankton of Utah Lake were taxonomic in nature. Since the late 1960s, macroinvertebrates studies have concentrated on the Goshen Bay area of Utah Lake. The rocky shore macroinvertebrate community along the eastern shore of Goshen Bay is the most diverse and productive in Utah Lake (Toole 1973). The dominant organisms are the amphipod Hyatella azteca and the chironomid Dicrotendipes fumidus. Also present along the eastern shore is an extensive zone of the sponge Meyenia fluviatilis (Smith 1972). Two taxa, Chironomidae and Oligochaeta, dominate the silty-ooze community in the southern portion of Utah Lake …
Fishes Of Utah Lake, Richard A. Heckmann, Charles W. Thompson, David A. White
Fishes Of Utah Lake, Richard A. Heckmann, Charles W. Thompson, David A. White
Great Basin Naturalist Memoirs
There has been a drastic change in fish populations inhabiting Utah Lake during the last 100 years. When the pioneers first entered Utah Valley they found a well-established cutthroat trout population in Utah Lake and in the tributaries flowing into the lake. After intensive agricultural and industrial development this salmonid disappeared, and carp, white bass, and black bullhead are the common species today. The known history of the Utah Lake fisheries is summarized. Through proper management it is possible to establish a sport fishery of the common fish species currently in the Lake, including walleye, channel catfish, and largemouth bass. …
Strategies For The Preservation Of Rare Plants, Arthur H. Holmgren
Strategies For The Preservation Of Rare Plants, Arthur H. Holmgren
Great Basin Naturalist Memoirs
Preservation of the habitat is the only logical strategy to save endangered species from early extinction. Ecological amplitudes of rare species are very narrow, so transplantation to such alien sites as botanical gardens is not a solution. Protection may not be the answer. We must learn as much as we can about the biology of the species in question, in the field and under laboratory conditions. The first steps must be to determine the distribution. This would be followed by analysis of soils by means of physical and chemical studies. Pollination ecology, associated species, phenological records, and genetic and cytological …
Phytoseiid Predators Of Mite Pests In Utah Apple Orchards, Clive D. Jorgensen, Vichitra Mongkolprasith
Phytoseiid Predators Of Mite Pests In Utah Apple Orchards, Clive D. Jorgensen, Vichitra Mongkolprasith
Great Basin Naturalist
Recent efforts to integrate phytoseiid predators in pest (mite) management programs for apples have been somewhat successful and economical in several fruit growing areas of North America. Convenient descriptions and reviews of the literature for species which have been collected from Utah are provided to stimulate further local work. Seven species of Amblyseius and five Typhlodromus are described (none new), with notes provided concerning their respective geographic distributions and biologies.