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Tribute To Dr. George And Phoebe Harp, Academy Editors

Journal of the Arkansas Academy of Science

No abstract provided.

Fabrication And Characterization Of Aluminum-Doped Zno/Pani Hybrid Solar Cells, S. Abdulalmohsin, S. M. Al-Mutoki, Z. Li

Journal of the Arkansas Academy of Science

We report a facile method to fabricate an AZO/PANI heterostructure by a sandwiching technique. Aluminum-doped ZnO (AZO) films were deposited onto indium tin oxide (ITO) glass using the sputtering technique while PANI films were deposited onto ITO glass using electropolymerization. The optoelectric properties of the inorganic/organic device were characterized

Journal Of The Arkansas Academy Of Science - Volume 66 2012, Academy Editors

Journal of the Arkansas Academy of Science

No abstract provided.

Al/Pani-Mwnt/Au-Plastic Schottky Diode Solar Cells, S. Abdulalmohsin, S. M. Al-Mutoki, Z. Li

Journal of the Arkansas Academy of Science

Al/PANI-MWNT/Au-Plastic Schottky diode solar cells were fabricated by the electrochemical polymerization technique to make polyaniline films on the top of gold nanoparticles film. The aluminum contact was deposited by thermal evaporation. The electro-optical characteristics of these devices produced at the different polymerization time were compared. Here, we achieved the highest ever reported open-circuit voltage of 0.8 V with the electrochemical polymerization technique. The polymerization of polyaniline films was thought to be a major factor in the enhanced performance. The effects of varying the polyaniline thickness on the device performance were investigated

Status, Dispersal, And Breeding Biology Of The Exotic Eurasian Collared-Dove (Streptopelia Decaocto) In Arkansas, J. M. Fielder, R. Kannan, D. A. James, J. Cunningham

Journal of the Arkansas Academy of Science

The exotic Eurasian Collared-Dove (Streptopelia decaocto) was first sighted in Arkansas at Harrison (Boone Co.) on 25 June 1989. Since this initial sighting the species has grown in numbers and is now present in 42 of 75 counties across the state. In the spring and summer of 2009 and 2010, 20 nests were observed in the urban areas of Fort Smith (Sebastian County). Fifteen of the 20 nests (75%) were located on human-made structures of which 13 (65%) were on an electrical substation and two (10%) were on utility poles. The remaining 5 nests (25%) were in trees. Mean nest …

Establishing Baseline Nutrient And Sediment Input In The Lower Cache River Watershed, Ar, A. M. Gilmer, C. A. Rosado-Berrios, J. L. Bouldin

Journal of the Arkansas Academy of Science

Contaminants in waterways continue to be a problem especially in watersheds dominated by land use changes such as agriculture. Clearing the land for agricultural use is needed to support the population; however, agricultural contaminants are cited as contributing the greatest input of suspended solids and nutrients to waterways. Quantifying various contaminants in surface water is useful in determining their origin, thus aiding in their mitigation. This study, focused on the Cache River Watershed, reports pH, dissolved oxygen (DO), conductivity, turbidity, total suspended solids (TSS), NO3 - , NO2 - , and PO4 3- in the lower sub watersheds. It was …

Retrospective Epidemiologic Analysis Of Influenza Pandemics In Arkansas, A, A. J. Gray, D. Nguyen, B. M. Rowley

Journal of the Arkansas Academy of Science

This study compares influenza mortality in Arkansas during the pandemics of: 1918 (aka Spanish flu), 1957, 1968, and 2009 (H1N1, aka Swine flu). Death certificate and U.S. census data were gathered and analyzed for statistical differences in mortalities based on sex, age, and geographic regions of Arkansas for each pandemic. The geographic regions were defined by the five Public Health Units classified by the Arkansas Department of Health. Regional mortalities were also analyzed across all pandemics to investigate how the different pandemics affected each individual region. Chi-square analyses for each pandemic showed only the 1918 pandemic had statistical differences between …

Distribution, Life History Aspects, And Conservation Status Of The Spothanded Crayfish, Orconectes (Procericambarus) Punctimanus (Creaser) (Decapoda: Cambaridae), In Arkansas, C. T. Mcallister, H. W. Robison

Journal of the Arkansas Academy of Science

The spothanded crayfish, Orconectes (Procericambarus) punctimanus (Creaser), is an endemic crayfish of the Interior Highlands (Ozark Plateau) of Arkansas and Missouri. Fieldwork within the Arkansas portion of its overall distribution from 1999–2012 and a search of museum and literature records revealed a state distribution of 11 counties in northern Arkansas. Eighty-two collections of this crayfish were made from the White River system in 9 counties, including Baxter, Fulton, Independence, Izard, Lawrence, Marion, Randolph, Sharp, and Stone. Two additional counties, Clay and Searcy, are also added to the distribution of O. punctimanus from museum and literature records. This crayfish inhabits areas …

Effects Of Drosophila Ribosomal Protein S6 Kinase On Wing Growth, M. J. Stewart, J. L. Hunt

Journal of the Arkansas Academy of Science

In multicellular animals, organ size, cell size and total organism size are regulated by signaling through the insulin receptor and TOR signaling pathways. The ribosomal protein S6 kinase is a key component of these pathways. It has been shown that mice or Drosophila lacking this kinase have a reduced body size that is associated with a decrease in cell size. Ectopic expression of activated or dominant negative transgenic variants of the Drosophila homolog of ribosomal S6 kinase (dS6K) has been shown to cause phenotypes that are consistent with a role for dS6K in growth, but whether the phenotypes were due …

Analysis Of Human Tacc3 In Cellular Responses To Polycyclic Aromatic Hydrocarbons, Ivan H. Still, B. Lauffart

Journal of the Arkansas Academy of Science

Very little is known about the etiology of ovarian cancer. However, studies have shown that occupational exposure to polycyclic aromatic hydrocarbons (PAHs) and tobacco smoking can increase ovarian cancer risk. Previously, we have determined that 100% of ovarian tumors show loss or aberrant subcellular localization of TACC3 (transforming acidic coiled coil 3) relative to the normal ovarian surface epithelium (OSE). In mice, a role for TACC3 in the cellular response to PAH has been defined. However, comparable studies for human TACC3 has not been performed. In this report, we show that specific knockdown of TACC3 in human ovarian cancer cells …

Using Infrared Imagery To Estimate White-Tailed Deer Populations On The Pine Bluff Arsenal, D. M. Techentin, E. S. Boyd, W. E. Sparks, R. E. Kissell Jr.

Journal of the Arkansas Academy of Science

Military installations present unique challenges to natural resource managers managing wildlife populations. For those species that are hunted or trapped, it is important to provide data to these installations for achieving sustainable harvests. Pine Bluff Arsenal (PBA), a military installation in southeastern Arkansas, manages for a host of wildlife species including white-tailed deer (Odocoileus virginianus). However, baseline data regarding population size for deer are lacking. We used infrared technology and distance sampling to estimate the size of the winter, post-harvest deer population on PBA. We identified 9 competing models. The best model provided an estimate of density of 0.245 deer/ha …

Summary Of Previous And New Records Of The Least Darter (Etheostoma Microperca) In Arkansas, B. K. Wagner, M. D. Kottmyer, M. E. Slay

Journal of the Arkansas Academy of Science

The least darter, Etheostoma microperca, has a limited distribution in Arkansas and is designated as a species of greatest conservation need by the Arkansas Game and Fish Commission. The fish was first documented in the state in 1938 in Wildcat Creek west of Springdale with additional discoveries in 1960, 1973, 1981, and 1982. A 1997 study documented the persistence of the species in Healing Spring Run and a spring run tributary of Osage Creek, 2 of the historic streams. Field sampling in 2004-2005 and 2010-2011, provided more concentrated sampling efforts in the basin. This study sought to determine the present …

The Southern Arkansas University Biodiversity Collections, S. E. Krosnick, K. S. Dockter

Journal of the Arkansas Academy of Science

No abstract provided.

New Geographic Distribution Records For Centipedes (Chilopoda: Scolopendromorpha) In Arkansas, Including The First From Crowley's Ridge And The Grand Prairie, C. T. Mcallister, H. W. Robison, L. C. Thompson, M. B. Connior

Journal of the Arkansas Academy of Science

No abstract provided.

History And Current Status Of Egyptian Goose (Alopochen Aegyptiacus) In Northwestern Arkansas, K. G. Smith, D. A. Fames

Journal of the Arkansas Academy of Science

No abstract provided.

Title Of A Paper Prepared For The Arkansas Academy Of Science Journal [Instructions For Prospective Authors], Academy Editors

Journal of the Arkansas Academy of Science

No abstract provided.

Health Check: Analyzing Trends In West Michigan 2012, Grand Valley State University

Health Check: Analyzing Trends in West Michigan

No abstract provided.

Hydrogen Dynamics In Soil In Northern Boreal And Subarctic Sweden, Kaitlyn J. Steele

Master's Theses and Capstones

Molecular hydrogen (H2) is produced and consumed through syntrophic organic matter decomposition in soil. The purpose of this study was to determine if organic-rich soils can become a temporary source of H2 to the atmosphere under anoxic conditions and the release of labile carbon.

H2 was generally consumed at the subarctic peatland, but the net H2 uptake decreased as site moisture increased from the dry palsa site to the wet Eriophorum site. The dissolved H 2 concentrations suggest that methanogenesis is the predominant decomposition pathway at depth and other decomposition processes or plant-mediated transport influence concentrations closer to the surface. …

The Friendly Yeti, Daniel S. Capper

Faculty Publications

Most images of yetis in Western popular culture and scholarly literature portray them as secular, predatory monsters. These representations overlook important religious dimensions of yetis that are hidden in the current literature, so I take a new look at yetis in Tibetan religions in order to clarify our understanding of these legendary creatures. Following a phenomenological approach that sets aside the issue of the ontological existence of yetis, I examine texts, art, ritual, and folklore in order to propose four yeti personal ideal types: the Buddhist practitioner, the human religious ally, the friendly yeti, and the mountain deity yeti. These …

Three Prehistoric Inventions That Shaped Us, Glen Nelson

Consensus

Title: Three prehistoric inventions that shaped us Author: David Martel Johnson Publisher: New York: Peter Lang, 2011. ISBN: 9781453901571

Vision 2012

Vision

No abstract provided.

Montanan, Winter 2012, University Of Montana--Missoula

Montanan Magazine, 1969-2024

This is the magazine of the University of Montana with news about the University for UM alumni as well as current faculty, students, staff, and administrators. This is volume 29, number 1.

2012-2013 Course Catalog, University Of Montana--Missoula. Office Of The Registrar

University of Montana Course Catalogs, 1895-2024

An annual catalog of courses and course descriptions offered at the University of Montana.

In Vitro Propagation Of Candidatus Rickettsia Andeanae Isolated From Amblyomma Maculatum, Alison Luce-Fedrow, Chelsea Wright, Holly D. Gaff, Daniel E. Sonenshine, Wayne L. Hynes, Allen L. Richards

Biological Sciences Faculty Publications

Candidatus Rickettsia andeanae was identified during an investigation of a febrile outbreak in northwestern Peru (2002). DNA sequencing from two ticks (Amblyomma maculatum, Ixodes boliviensis) collected during the investigation revealed a novel Rickettsia agent with similarity to the spotted fever group rickettsiae. Since then, Candidatus R. similar to andeanae has been detected in A. maculatum ticks collected in the southeastern and southcentral United States, Argentina, and Peru. To date, Candidatus R. andeanae has not been successfully cultivated in the laboratory. We present evidence for the continuous cultivation in three cell lines of Candidatus R. similar to …

Unusually High Body Mass In Virginia Meadow Voles, Sara B. Longtin, Robert K. Rose

Biological Sciences Faculty Publications

We used monthly capture-mark-recapture information to determine growth rates and life spans for 2 populations of meadow voles studied for 28 and 29 months in eastern Virginia in order to learn whether the exceptionally large body masses of some voles were due to rapid growth, long lives, or both. On 1 study grid, 64 males (19%) and 43 nonpregnant females (11%) were ≥70 g, with the largest male being 89 g. Mostly positive growth rates (averaging 1.1-3.9 g/month) were recorded, even in autumn and winter months, times when meadow voles are losing mass in northern populations, where most studies of …

Successful Genotyping Of Microsatellites In The Woolly Mammoth, Yasuko Ishida, Alfred L. Roca, Stephen Fratpietro, Alex D. Greenwood

Biological Sciences Faculty Publications

Genetic analyses using ancient DNA from Pleistocene and early Holocene fossils have largely relied on mitochondrial DNA (mtDNA) sequences. Among woolly mammoths, Mammuthus primigenius, mtDNA analyses have identified 2 distinct clades (I and II) that diverged 1-2 Ma. Here, we establish that microsatellite markers can be effective on Pleistocene samples, successfully genotyping woolly mammoth specimens at 2 loci. Although significant differentiation at the 2 microsatellite loci was not detected between 16 clade I and 4 clade II woolly mammoths, our results demonstrate that the nuclear population structure of Pleistocene species can be examined using fast-evolving nuclear microsatellite markers.

Detection Of Mutant-Huntingtin Aggregation Conformers And Modulation Of Sds-Soluble Fibrillar Oligomers By Small Molecules, Emily M. Sontag, Gregor P. Lotz, Goucheng Yang, Christopher J. Sontag, Brian J. Cummings, Charles G. Glabe, Paul J. Muchowski, Leslie Michels Thompson

Biological Sciences Faculty Research and Publications

The Huntington's disease (HD) mutation leads to a complex process of Huntingtin (Htt) aggregation into multimeric species that eventually form visible inclusions in cytoplasm, nuclei and neuronal processes. One hypothesis is that smaller, soluble forms of amyloid proteins confer toxic effects and contribute to early cell dysfunction. However, analysis of mutant Htt aggregation intermediates to identify conformers that may represent toxic forms of the protein and represent potential drug targets remains difficult. We performed a detailed analysis of aggregation conformers in multiple in vitro, cell and ex vivo models of HD. Conformation-specific antibodies were used to identify and characterize aggregation …

An Epidemiological Model Of Rift Valley Fever With Spatial Dynamics, Tianchan Niu, Holly D. Gaff, Yiannis E. Papelis, David M. Hartley

Biological Sciences Faculty Publications

As a category A agent in the Center for Disease Control bioterrorism list, Rift Valley fever (RVF) is considered a major threat to the United States (USA). Should the pathogen be intentionally or unintentionally introduced to the continental USA, there is tremendous potential for economic damages due to loss of livestock, trade restrictions, and subsequent food supply chain disruptions. We have incorporated the effects of space into a mathematical model of RVF in order to study the dynamics of the pathogen spread as affected by the movement of humans, livestock, and mosquitoes. The model accounts for the horizontal transmission of …

A Mems Viscosity Sensor For Conductive Fluids, Luis Gan Chau

Theses

MEMS Viscosity sensors are widely used in different applications nowadays. MEMS sensors are created by making them small in size almost penny-like sized. With low power consumption, cheap costs of production, and mass production of the devices. These sensors are able to measure viscosity through three different characteristics, the frequency, amplitude and the quality factor. Each of these describes the fluids viscosity, by using a vibrational type viscometer. The sensor has been proven to work in conductive fluids after a post process fabrication of a protective layer of Parylene C. The sensors performance has been altered due to a thicker …

Introduction: The Trajectory Of German Philosophy After Kant, And The "Difference" Between Fichte And Schelling, Michael Vater

Philosophy Faculty Research and Publications

No abstract provided.