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Articles 6451 - 6480 of 10253
Full-Text Articles in Entire DC Network
Expression Of Nicotinic Acetylcholine Receptor Mrna As A Function Of Age In Whole Hippocampus Preparations From Wistar Rats, Kasey C. Welch
Expression Of Nicotinic Acetylcholine Receptor Mrna As A Function Of Age In Whole Hippocampus Preparations From Wistar Rats, Kasey C. Welch
Theses and Dissertations
Whole hippocampus preparations, isolated bilaterally, from untreated Wistar rats at various ages (10-90 days old) were analyzed for the mRNA expression of the alpha 2, alpha 3, alpha 4, alpha 5, alpha 7, beta 2, beta 3, and beta 4 neuronal nicotinic acetylcholine receptor subunits. To do so, RNA was isolated from acutely isolated hippocampal samples, converted to cDNA by means of a reverse transcription reaction, then analyzed with quantitative real-time PCR to determine the relative levels of the mRNAs the cells were expressing at the age when the samples were obtained. The relative expression of the levels of RNA …
Duplicate Gene Expression In Allopolyploid Gossypium Reveals Two Temporally Distinct Phases Of Expression Evolution, Joshua Udall, Lex E. Flagel, Dan Nettleton, Jonathan F. Wendel
Duplicate Gene Expression In Allopolyploid Gossypium Reveals Two Temporally Distinct Phases Of Expression Evolution, Joshua Udall, Lex E. Flagel, Dan Nettleton, Jonathan F. Wendel
Faculty Publications
Polyploidy has played a prominent role in shaping the genomic architecture of the angiosperms. Through allopolyploidization, several modern Gossypium (cotton) species contain two divergent, although largely redundant genomes. Owing to this redundancy, these genomes can play host to an array of evolutionary processes that act on duplicate genes. Results- We compared homoeolog (genes duplicated by polyploidy) contributions to the transcriptome of a natural allopolyploid and a synthetic interspecific F1 hybrid, both derived from a merger between diploid species from the Gossypium A-genome and D-genome groups. Relative levels of A- and D-genome contributions to the petal transcriptome were determined for 1,383 …
Vol. 10 No. 1 Esr Review, Esr Review
Vol. 10 No. 1 Esr Review, Esr Review
Journal of Microfinance / ESR Review
No abstract provided.
Entrepreneurship, Thinking, And Economic Self-Reliance, Ronald K. Mitchel, Adam D. Bailey, Mitchell J. Robert
Entrepreneurship, Thinking, And Economic Self-Reliance, Ronald K. Mitchel, Adam D. Bailey, Mitchell J. Robert
Journal of Microfinance / ESR Review
No abstract provided.
Inca Garcilasco's Comentarios Reales, Or Who Tells The Story Of A Conquered Civilization?, Darío Fernández Morera
Inca Garcilasco's Comentarios Reales, Or Who Tells The Story Of A Conquered Civilization?, Darío Fernández Morera
Comparative Civilizations Review
No abstract provided.
Humor Corner, Anonymous Author
Embryonic Stem Cell Research: When Should It Be Allowed?, Collin D. Zundel
Embryonic Stem Cell Research: When Should It Be Allowed?, Collin D. Zundel
Brigham Young University Prelaw Review
No abstract provided.
The Neolithic Demographic Transition, Population Pressure And Cultural Change, Jean-Pierre Bocquet-Appel
The Neolithic Demographic Transition, Population Pressure And Cultural Change, Jean-Pierre Bocquet-Appel
Comparative Civilizations Review
No abstract provided.
Edward O. Wilson, Consilience: The Unity Of Knowledge, Lee Daniel Snyder
Edward O. Wilson, Consilience: The Unity Of Knowledge, Lee Daniel Snyder
Comparative Civilizations Review
No abstract provided.
Deadly Conspiracy Myths In History, Laina Farhat-Holzman
Deadly Conspiracy Myths In History, Laina Farhat-Holzman
Comparative Civilizations Review
No abstract provided.
Mind, Causation And Chinese Mentality, J. Randall Groves
Mind, Causation And Chinese Mentality, J. Randall Groves
Comparative Civilizations Review
No abstract provided.
Demography Of The Yarrow's Spiny Lizard, Sceloporus Jarrovii, From The Central Chihuahuan Desert, Héctor Gadsden, José L. Estrada-Rodríguez
Demography Of The Yarrow's Spiny Lizard, Sceloporus Jarrovii, From The Central Chihuahuan Desert, Héctor Gadsden, José L. Estrada-Rodríguez
Western North American Naturalist
The demography of a population of Yarrow's spiny lizard, Sceloporus jarrovii, was examined from 2004 to 2006 in the canyon Las Piedras Encimadas, located in Gomez Palacio, Durango, México. Lizards were studied using a mark-recapture technique. Reproduction in females occurred between November and May, coinciding with dry conditions. Reproductive activity was highest (percent of females with vitellogenic follicles or embryos) in the middle of the dry season (November and December). Thirteen percent of females reached sexual maturity at an average age of 8.5 months. The population structure was similar in spring and fall, but not in summer. A notable …
The Case For Humboldtensis: A Subspecies Name For The Indigenous Cutthroat Trout (Oncorhynchus Clarkii) Of The Humboldt River, Upper Quinn River, And Coyote Basin Drainages, Nevada And Oregon, Patrick C. Trotter, Robert J. Behnke
The Case For Humboldtensis: A Subspecies Name For The Indigenous Cutthroat Trout (Oncorhynchus Clarkii) Of The Humboldt River, Upper Quinn River, And Coyote Basin Drainages, Nevada And Oregon, Patrick C. Trotter, Robert J. Behnke
Western North American Naturalist
In the early years of his research on the native trouts of western North America, Behnke (1960, 1966, 1979) observed consistent differences in certain meristic characters between the cutthroat trout of the Humboldt River drainage and those from the Truckee, Carson, and Walker river drainages of the Lahontan Basin, and proposed that the Humboldt trout be recognized as a distinct subspecies. He coined the subspecies name humboldtensis, but a formal description was never published. Here we again present the early evidence for subspecific distinction of the Humboldt drainage cutthroat trout, and add more recent findings from the fields of …
Geographic Patterns Of Ground-Dwelling Arthropods Across An Ecoregional Transition In The North American Southwest, David C. Lightfoot, Sandra L. Brantley, Craig D. Allen
Geographic Patterns Of Ground-Dwelling Arthropods Across An Ecoregional Transition In The North American Southwest, David C. Lightfoot, Sandra L. Brantley, Craig D. Allen
Western North American Naturalist
We examined the biogeographic patterns of ground-dwelling arthropod communities across a heterogeneous semiarid region of the Southern Rio Grande Rift Valley of New Mexico. Our 3 sites included portions of 5 ecoregions, with the middle site a transition area where all ecoregions converged. We addressed the following 3 questions: (1) Do the species assemblage patterns for ground arthropods across habitats and sites conform to recognized ecoregions? (2) Are arthropod assemblages in distinct vegetation-defined habitats within an ecoregion more similar to each other or to assemblages in similar vegetation-defined habitats in other ecoregions? (3) Is there a detectable edge effect with …
Observations On Body Mass Of Prairie Dogs In Urban Habitat, Seth B. Magle
Observations On Body Mass Of Prairie Dogs In Urban Habitat, Seth B. Magle
Western North American Naturalist
The black-tailed prairie dog is an important component of prairie and steppe ecosystems. Currently many prairie dog colonies are fragmented by, or adjacent to, urban development, but little is known about what effects urbanization may have on these animals. I compare body weights and sex ratios of prairie dogs in isolated urban habitat in Denver, Colorado, to published data for black-tailed prairie dogs at the same time of year. Prairie dogs in this study had summer weights similar to those reported in the literature, although males apparently gained weight earlier in the year, and observed sex ratios were not significantly …
American Pikas (Ochotona Princeps) In Northwestern Nevada: A Newly Discovered Population At A Low-Elevation Site, Erik A. Beever, Jenifer L. Wilkening, Donald E. Mcivor, Shana S. Weber, Peter F. Brussard
American Pikas (Ochotona Princeps) In Northwestern Nevada: A Newly Discovered Population At A Low-Elevation Site, Erik A. Beever, Jenifer L. Wilkening, Donald E. Mcivor, Shana S. Weber, Peter F. Brussard
Western North American Naturalist
The central tenet of island biogeography theory—that species assemblages on islands are functions of island area, isolation from mainlands, and vicariance—has been altered by the demonstrable effects that rapid climate change is imposing on insular faunas, at least in isolated mountaintops. Although populations of American pikas (Ochotona princeps) continue to suffer extirpations, and although the lower bounds of the pika's elevational distribution are shifting upslope across the Great Basin, we report here on the new discovery of a low-elevation population of pikas in a mountain range from which they had not been reported previously. This discovery, particularly in …
Dynamics Of Rodent Populations In Semiarid Habitats In Lassen County, California, Sara C. Gillespie, Dirk H. Van Vuren, Douglas A. Kelt, John M. Eadie, Daniel W. Anderson
Dynamics Of Rodent Populations In Semiarid Habitats In Lassen County, California, Sara C. Gillespie, Dirk H. Van Vuren, Douglas A. Kelt, John M. Eadie, Daniel W. Anderson
Western North American Naturalist
From 1996 to 2004, we studied population dynamics of a rodent assemblage in semiarid habitats in Lassen County, California. Abundances of rodents appeared affected by fluctuations in precipitation from a high in 1996 to average and slightly below-average levels in subsequent years; perhaps reflecting this, assemblage composition also changed dramatically during the study period. California kangaroo rats (Dipodomys californicus) declined from abundant to extremely rare, abundances of deer mice (Peromyscus maniculatus) fluctuated greatly during the study period, and, perhaps most notably, populations of dusky-footed woodrats (Neotoma fuscipes) appeared to decline to local extinction, possibly …
Hidden Village (42sa2112): A Basket Maker Iii Community In Montezuma Canyon, Utah, Donald G. Montoya
Hidden Village (42sa2112): A Basket Maker Iii Community In Montezuma Canyon, Utah, Donald G. Montoya
Theses and Dissertations
ABSTRACT This thesis focuses on the Basketmaker III period of the Ancestral Puebloan culture commonly known as the Anasazi, which means ‘ancient stranger’ or ‘ancient enemy’ in the Navajo language, or as preferred by the Hopi; "Hisatsinom" for "The Ones Who Came Before." I use the terms Anasazi and Ancestral Puebloan interchangeably in this study. My particular focus concentrates on a Basketmaker III settlement (42Sa2112 – Hidden Village) in Montezuma Canyon in southeastern Utah. My thesis presents data and an interpretive hypothesis that village formation and complex social organization emerged earlier than most standard texts (Plog 1997) assume. Analysis of …
Cultic Niches In The Nabataean Landscape: A Study In The Orientation, Facade Ornamentation, Sanctuary Organization, And Function Of Nabataean Cultic Niches, Holly A. Raymond
Cultic Niches In The Nabataean Landscape: A Study In The Orientation, Facade Ornamentation, Sanctuary Organization, And Function Of Nabataean Cultic Niches, Holly A. Raymond
Theses and Dissertations
Niches are common features in the Nabataean landscape (Healey 2001; Starcky 1966: cols. 1008-10; Patrich 1990:50-113). From their frequent appearance in the archeological record, it is evident that the Nabataeans placed great importance on these cultic features. However, very little is known about them. The purpose of this study was to find and record Nabataean cultic niches in a field survey and then to interpret these niches as part of a research design that proposed purposes of niche variation in construction, orientation, and placement of niches on the landscape. My research addresses several neglected issues in the study of cultic …
The Maya Footprint: Soil Resources Of Chunchucmil, Yucatan, Mexico, Ryan V. Sweetwood
The Maya Footprint: Soil Resources Of Chunchucmil, Yucatan, Mexico, Ryan V. Sweetwood
Theses and Dissertations
Agricultural yields in Northwest Yucatán are constrained by climate, thin soils, and low fertility. Despite this, the ancient Maya city of Chunchucmil Yucatán, Mexico, boasted an immense, dense, and wealthy population during the Middle Classic period (ca A.D. 400-700). Soil physical and chemical properties were explored to determine how the ancient Maya of Chunchucmil fed themselves. Soil profiles were collected from various locations within ancient Chunchucmil's suspected sustaining area. The physical and chemical properties, carbon isotopes, black carbon, and coprostanols of soil profiles sampled were compared to ancient rural settlement and remotely sensed images, such as AIRSAR (airborne synthetic aperture …
The Effects Of A Resveratrol Derivative On Regulatory Behaviors And Reproductive Health In Male And Female Long-Evans Rats, Kimberly Michelle Fabick
The Effects Of A Resveratrol Derivative On Regulatory Behaviors And Reproductive Health In Male And Female Long-Evans Rats, Kimberly Michelle Fabick
Theses and Dissertations
Phytoestrogens are chemicals produced by plants that act like estrogens and have the ability to bind to the mammalian estrogen receptor system. The purpose of this study is to evaluate a new phytoestrogen analog called 4-acetoxy Resveratrol. Resveratrol is a phytoestrogen that has been found in the skin of grapes. Resveratrol has been shown to be able to bind to the estrogen receptors and has a similar molecular structure as estradiol. Resveratrol has been shown to have many positive health benefits such as improving cardiovascular health, serving as a neuroprotective agent, acting as an anti-inflammatory agent, working as an anti-cancer …
The Effects Of Deep Brain Stimulation On The Speech Of Patients With Parkinson's Disease, Erin Suzanne Bjarnason
The Effects Of Deep Brain Stimulation On The Speech Of Patients With Parkinson's Disease, Erin Suzanne Bjarnason
Theses and Dissertations
Deep brain stimulation (DBS) of the subthalamic nucleus (STN) has received more attention in recent years as a treatment option for regulating the symptoms of Parkinson's disease. Previous studies of DBS documented consistent improvements in motor function but more variability in speech outcomes. In the present study, six participants diagnosed with idiopathic Parkinson's disease who reported worsened speech with stimulation were recorded performing speech acoustic tasks with the stimulators on, and again with the stimulators off. Improvements were noted for most participants in measurements of formant slopes, long term average spectrum (LTAS) of a sustained vowel, and spirantization with stimulation …
The Effects Of Prenatally Administered Phytoestrogens On The Reproductive And Behavioral Development Of Long-Evans Rats, Crystal Blake
The Effects Of Prenatally Administered Phytoestrogens On The Reproductive And Behavioral Development Of Long-Evans Rats, Crystal Blake
Theses and Dissertations
Equol is known to be a selective androgen modulator and has the ability to bind and inhibit 5-alpha dihydrotestosterone (5α-DHT). Equol is also a selective estrogen receptor modulator and is able to bind beta estrogen receptors with high affinity. As estrogen receptors are found in the hypothalamus, pituitary, and gonads, prenatally administered equol could affect the morphological and reproductive development of offspring. To test this hypothesis, during gestational days 14 to 20, forty-two pregnant Long-Evans rats were given one of six treatments: 1) no treatment, 2) injection with dimethyl sulfoxide (DMSO), 3) injection with 10 mg/kg equol, 4) injection with …
Transcendental Exchange: Alchemical Discourse In Romantic Philosophy And Literature, Elizabeth Olsen Brocious
Transcendental Exchange: Alchemical Discourse In Romantic Philosophy And Literature, Elizabeth Olsen Brocious
Theses and Dissertations
Alchemical imagery and ideology is present in many Romantic works of literature, but it has largely been overlooked by literary historians in their contextualization of the time period. The same can be said for mysticism in general, of which alchemy is a subset. This project accounts for alchemy in the works of transcendental philosophers and writers as it contributes to some of the most important conversations of the Romantic time period, particularly the reaction against empirical philosophy and the articulation of creative processes. The transcendental conversation is a transnational one, encompassing Germany, Britain, and America, with its use of alchemy …
Sugar Nine: A Creative Thesis, Emily L. Dyer
Sugar Nine: A Creative Thesis, Emily L. Dyer
Theses and Dissertations
This collection of short stories explores the different ways women tolerate violence in exchange for some form of validation. The narratives focus on women and the reverberations of small moments which carry violent mass. While the violence occasionally includes physical elements, the collection is more concerned with the ways women accept emotional and psychological violence—specifically from men. Themes, motifs and symbols from the Clytie-Helios myth are threaded throughout the collection as well as a concern for space and touch, art and the creation of art, silence and voice. All of these elements involve control as the women characters in these …
Evaluation Of The Applicability Of The Interactive Highway Safety Design Model To Safety Audit Of Two-Lane Rural Highways, Kaitlin Chuo
Evaluation Of The Applicability Of The Interactive Highway Safety Design Model To Safety Audit Of Two-Lane Rural Highways, Kaitlin Chuo
Theses and Dissertations
The Interactive Highway Safety Design Model (IHSDM) is a suite of software developed by the Federal Highway Administration (FHWA) for monitoring and analyzing two-lane rural highways in the United States. As IHSDM is a fairly "young" program a limited amount of research has been conducted to evaluate its practicability and reliability. To determine if IHSDM can be adopted into the engineering decision making process in Utah, a study was conducted under the supervision of the Utah Department of Transportation (UDOT) to evaluate its applicability to audit safety of two-lane rural highways in Utah. IHSDM consists of six modules: Policy Review …
Error Sensor Strategies For Active Noise Control And Active Acoustic Equalization In A Free Field, Ryan T. Chester
Error Sensor Strategies For Active Noise Control And Active Acoustic Equalization In A Free Field, Ryan T. Chester
Theses and Dissertations
Several measurements may be used as error signals to determine how to appropriately control a sound field. These include pressure, particle velocity, energy density and intensity. In this thesis, numerical models are used to show which signals perform best in is free-field active noise control (ANC) using error sensors located in the near field of the sound sources. The second is equalization in a free field and a semi-free field. Minimized energy density total power output (MEDToPO) plots are developed; these indicate the maximum achievable attenuation for a chosen error sensor as a function of location. A global listening area …
Double-Stranded Rna-Activated Protein Kinase Pkr Of Fishes And Amphibians: Varying The Number Of Double-Stranded Rna Binding Domains And Lineage-Specific Duplications, Loubna Tazi, Stefan Rothenburg, Nikolaus Deigendesch, Madhusudan Dey, Thomas E. Dever
Double-Stranded Rna-Activated Protein Kinase Pkr Of Fishes And Amphibians: Varying The Number Of Double-Stranded Rna Binding Domains And Lineage-Specific Duplications, Loubna Tazi, Stefan Rothenburg, Nikolaus Deigendesch, Madhusudan Dey, Thomas E. Dever
Faculty Publications
Double-stranded (ds) RNA, generated during viral infection, binds and activates the mammalian anti-viral protein kinase PKR, which phosphorylates the translation initiation factor eIF2alpha leading to the general inhibition of protein synthesis. Although PKR-like activity has been described in fish cells, the responsible enzymes eluded molecular characterization until the recent discovery of goldfish and zebrafish PKZ, which contain Z-DNA-binding domains instead of dsRNA-binding domains (dsRBDs). Fish and amphibian PKR genes have not been described so far. Results- Here we report the cloning and identification of 13 PKR genes from 8 teleost fish and amphibian species, including zebrafish, demonstrating the coexistence of …
Ozone Exposure In A Mouse Model Induces Airway Hyperreactivity That Requires The Presence Of Natural Killer T Cells And Il-17, Paul B. Savage, Muriel Pichavant, Sho Goya, Everett H. Meyer, Richard A. Johnston, Hye Y. Kim, Ponpan Matangkasombut, Ming Zhu, Yoichiro Iwakura, Rosemarie H. Dekruyff, Stephanie A. Shore, Dale T. Umetsu
Ozone Exposure In A Mouse Model Induces Airway Hyperreactivity That Requires The Presence Of Natural Killer T Cells And Il-17, Paul B. Savage, Muriel Pichavant, Sho Goya, Everett H. Meyer, Richard A. Johnston, Hye Y. Kim, Ponpan Matangkasombut, Ming Zhu, Yoichiro Iwakura, Rosemarie H. Dekruyff, Stephanie A. Shore, Dale T. Umetsu
Faculty Publications
Exposure to ozone, which is a major component of air pollution, induces a form of asthma that occurs in the absence of adaptive immunity. Although ozone-induced asthma is characterized by airway neutrophilia, and not eosinophilia, it is nevertheless associated with airway hyperreactivity (AHR), which is a cardinal feature of asthma. Because AHR induced by allergens requires the presence of natural killer T (NKT) cells, we asked whether ozone-induced AHR had similar requirements. We found that repeated exposure of wild-type (WT) mice to ozone induced severe AHR associated with an increase in airway NKT cells, neutrophils, and macrophages. Surprisingly, NKT cell-deficient …
Three Friends Of Swiss-American Science: Louis Agassiz, Arnold Guyot, And Cornelius C. Felton, William A. Koelsch
Three Friends Of Swiss-American Science: Louis Agassiz, Arnold Guyot, And Cornelius C. Felton, William A. Koelsch
Swiss American Historical Society Review
The year 2007 is a special one for those interested in Switzerland and in American science. It marks the bicentennial of the births of two Swiss scientists from Canton Neuchatel who came to America in the 1840s, the natural historian Jean Louis Rodophe Agassiz and the geographer-geologist Arnold Henri Guyot. It is also the bicentennial of the birth of the Harvard classicist Cornelius Conway Felton, who became Agassiz' closest American friend and his brother-in-law, and was the translator of Guyot' s first American lectures as well as the instigator of his first book. Agassiz was the eldest, born on 29 …