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Articles 5071 - 5100 of 7189
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University Of Arkansas Catalog Of Studies, 2011-2012, University Of Arkansas, Fayetteville
University Of Arkansas Catalog Of Studies, 2011-2012, University Of Arkansas, Fayetteville
Undergraduate Catalog of Studies
No abstract provided.
Razorback Basketball Media Guide, 2011-2012, University Of Arkansas, Fayetteville. Athletics Media Relations
Razorback Basketball Media Guide, 2011-2012, University Of Arkansas, Fayetteville. Athletics Media Relations
Arkansas Women's Basketball
No abstract provided.
Arkansas Cross Country Media Guide, 2012, University Of Arkansas, Fayetteville. Athletics Media Relations
Arkansas Cross Country Media Guide, 2012, University Of Arkansas, Fayetteville. Athletics Media Relations
Arkansas Men's Cross Country
No abstract provided.
Center For Food Safety, Winter 2012, University Of Arkansas (System). Division Of Agriculture. Center For Food Safety
Center For Food Safety, Winter 2012, University Of Arkansas (System). Division Of Agriculture. Center For Food Safety
Center for Food Safety
No abstract provided.
Nutrient Criteria Development Mini-Workshops For Usepa Region Vi States, Brian E. Haggard, J. Thad Scott
Nutrient Criteria Development Mini-Workshops For Usepa Region Vi States, Brian E. Haggard, J. Thad Scott
Arkansas Water Resources Center Technical Reports
The U.S. Environmental Protection Agency (USEPA) has been encouraging states to accerlate their efforts in developing numeric nutrient criteria to promulgate within respective water quality standards and regulations. Based on USEPA recommendations, many states are pursuing nutrient criteria development by assessing frequency distributions and stressor‐response relationships in historical databases, various special studies and the literature. The mini‐workshops described here were targeted toward state agency personnel and stakeholder groups with an interest in understanding statistical techniques that could be used to aide, guide and support numeric nutrient criteria. An initial workshop was conducted at the USEPA Regional Technical Assistance Group meeting …
Sestonic Chlorophyll-A And Nutrient Relationships Across The Red River Basin, Usa, Brian E. Haggard, J. Thad Scott, Scott D. Longing, John T. Metrailer
Sestonic Chlorophyll-A And Nutrient Relationships Across The Red River Basin, Usa, Brian E. Haggard, J. Thad Scott, Scott D. Longing, John T. Metrailer
Arkansas Water Resources Center Technical Reports
The Red River is a trans‐boundary, multi‐jurisdictional basin, where water‐quality standards often change at the state lines. The state agencies with USEPA Region VI focused resources to organize water‐quality data from within this basin and have it statistically analyzed to evaluate the relationships between nutrients and sestonic chlorophyll‐a (chl‐a). There were 152 sites within the Red River Basin that had nutrient and sestonic chl‐a data, and these sites were narrowed down to 132 when a minimum number of observations was required. Sestonic chl‐a levels increased with increasing nutrient concentrations; these significant regressions were used to predict nutrient concentrations at 10 …
Water Quality Trends Across Select 319 Monitoring Sites In Northwest Arkansas, Bryan W. Bailey, Brian E. Haggard, Leslie B. Massey
Water Quality Trends Across Select 319 Monitoring Sites In Northwest Arkansas, Bryan W. Bailey, Brian E. Haggard, Leslie B. Massey
Arkansas Water Resources Center Technical Reports
Northwest Arkansas contains two 319 priority watersheds that the Arkansas Natural Resources Commission has identified as being impacted by point source and nonpoint source pollution (i.e., phosphorus, nitrogen, and sediment). This project specifically focused on determining water quality trends at select sites within the Illinois River (HUC# 11110103) and Beaver Reservoir (HUC# 11010001) priority watersheds, including Ballard Creek, Osage Creek, Illinois River, White River, West Fork White River and the Kings River where sufficient constituent data were available. Water quality trends were analyzed using flow‐adjusted constituent concentrations of phosphorus, nitrogen, sediment, sulfate and chloride, and parametric and non‐parametric statistical techniques …
Keynote Speaker And Meeting Program, David Gross, Academy Editors
Keynote Speaker And Meeting Program, David Gross, Academy Editors
Journal of the Arkansas Academy of Science
No abstract provided.
Understanding Floristic Diversity Though A Database Of Greene County Specimens, K. M. Harris, M. B. Foard, T. D. Marsico
Understanding Floristic Diversity Though A Database Of Greene County Specimens, K. M. Harris, M. B. Foard, T. D. Marsico
Journal of the Arkansas Academy of Science
We present a floristic list of Greene County, Arkansas, based on accessioned collections from the Arkansas State University Herbarium (STAR). Currently, there are 1569 specimens representing 540 taxa from Greene County in STAR. Using the USDA Plants Database, plant species were analyzed according to whether or not they are native to the state as well as whether or not they have been previously documented as species occurring in the county. Having analyzed all the Greene County collections from STAR, we found 225 previously undocumented species. The data suggest that most of the specimens in the STAR collection were found in …
Annual Report, 2012, University Of Arkansas, Fayetteville. Dale Bumpers College Of Agricultural, Food And Life Sciences. Dept. Of Biological And Agricultural Engineering
Annual Report, 2012, University Of Arkansas, Fayetteville. Dale Bumpers College Of Agricultural, Food And Life Sciences. Dept. Of Biological And Agricultural Engineering
Biological and Agricultural Engineering Department Annual Report
No abstract provided.
Arkansas Women's Cross Country, 2012, University Of Arkansas, Fayetteville. Athletics Media Relations
Arkansas Women's Cross Country, 2012, University Of Arkansas, Fayetteville. Athletics Media Relations
Arkansas Women's Cross Country
No abstract provided.
Northwest Arkansas Comprehensive Environmental Analysis And Regional Smart Growth Plan, Nick Cerra, Zac Prange
Northwest Arkansas Comprehensive Environmental Analysis And Regional Smart Growth Plan, Nick Cerra, Zac Prange
Inquiry: The University of Arkansas Undergraduate Research Journal
For the past two decades, Northwest Arkansas has experienced rapid growth and increased urban development; population projections see the continuation of these trends (Wiley, 2010). Environmental conditions in the study area make it particularly sensitive to the effects of urban development, while existing landscape hazards and nuisance land uses jeopardize the quality of the urban form. Despite these phenomena, there is no comprehensive land use analysis or development management plan for Northwest Arkansas. This study presents a comprehensive environmental analysis of three sub-watersheds within the Illinois River watershed in Northwest Arkansas. Based on this analysis, the authors recommend planning overlays …
Inquiry: The University Of Arkansas Undergraduate Research Journal - Volume 13 - Fall 2012, Inquiry Editors
Inquiry: The University Of Arkansas Undergraduate Research Journal - Volume 13 - Fall 2012, Inquiry Editors
Inquiry: The University of Arkansas Undergraduate Research Journal
No abstract provided.
New Vertebrate Records And Natural History Notes From Arkansas, M. B. Connior, R. Tumlison, H. W. Robison
New Vertebrate Records And Natural History Notes From Arkansas, M. B. Connior, R. Tumlison, H. W. Robison
Journal of the Arkansas Academy of Science
No abstract provided.
Annual Report, 2011-2012, University Of Arkansas, Fayetteville. College Of Education And Health Professions
Annual Report, 2011-2012, University Of Arkansas, Fayetteville. College Of Education And Health Professions
College of Education and Health Professions Annual Reports
Beginning in 2004/2005- issued in online format only
University Of Arkansas Graduate Catalog, 2011-2012, University Of Arkansas, Fayetteville
University Of Arkansas Graduate Catalog, 2011-2012, University Of Arkansas, Fayetteville
Graduate School Catalog of Studies
No abstract provided.
Business Meeting Report (Secretary's And Treasurer's Report), Academy Editors
Business Meeting Report (Secretary's And Treasurer's Report), Academy Editors
Journal of the Arkansas Academy of Science
No abstract provided.
Electrochemical Polymerization Of Ppy-Mwcnt Composite As A Counter Electrode For Dye-Sensitized Solar Cells, S. Abdulalmohsin, S. M. Al-Mutoki, Z. Li
Electrochemical Polymerization Of Ppy-Mwcnt Composite As A Counter Electrode For Dye-Sensitized Solar Cells, S. Abdulalmohsin, S. M. Al-Mutoki, Z. Li
Journal of the Arkansas Academy of Science
Polypyrrole (PPy) - multi wall carbon nanotube (MWCNT) nanocomposites were synthesized by using in situ electrochemical polymerization with different COOH-functionalized MWCNTs. The PPY-MWCNT composites were used as counter electrode in the fabrication of dye sensitized solar cells (DSCs). Compared to the DSC device with PPy counter electrode, the devices with PPY/MWCNT composite electrode offer much higher total photovoltaic conversion efficiency due to the reduced series resistance. These PPY/MWCNT nanocomposite materials proved to be a good alternate to the expensive Pt as counter electrode in DSC.
Characterization Of Temporal And Spatial Variation In Subwatersheds Of The Strawberry River, Ar, Prior To Implementation Of Agricultural Best Management Practices, T. R. Brueggen-Boman, J. L. Bouldin
Characterization Of Temporal And Spatial Variation In Subwatersheds Of The Strawberry River, Ar, Prior To Implementation Of Agricultural Best Management Practices, T. R. Brueggen-Boman, J. L. Bouldin
Journal of the Arkansas Academy of Science
Benthic macroinvertebrate (BMI) assessments indicate alterations in physical and/or chemical factors making them valuable tools when attempting to assess agricultural best management practices (BMPs). The purpose of this study was to obtain pre-BMP land cover and macroinvertebrate community data in order to characterize temporal and spatial variation in three catchments: Little Strawberry (LS), Greasy Creek (GC), and Sandy Creek (SC) of the Strawberry River Watershed, located in north central Arkansas, in order to establish baseline conditions. BMIs were collected for the three subwatersheds in 1995, 1999, 2002, 2003 and 2009. Taxa richness, Hilsenhoff Biotic Index (HBI) and Ephemeroptera, Plecoptera and …
Theoretical Justification For Bond Valence -- Bond Length Empirical Correlations, F. D. Hardcastle, S. Laffoon
Theoretical Justification For Bond Valence -- Bond Length Empirical Correlations, F. D. Hardcastle, S. Laffoon
Journal of the Arkansas Academy of Science
Bond valence – bond length empirical correlations are of great interest in chemistry, biology, geology and materials science because they offer a quick and convenient way of checking and evaluating molecular structures. Linus Pauling’s relationship is the most commonly used, but is a two-parameter fit where R0 and b must be optimized. In this study, a simplified quantum-mechanical approach was used to derive Pauling’s empirical bond valence – bond length relationship. A covalency factor was also introduced to account for the difference in “softness” between cation and anion (resulting in increased orbital overlap). An expression for the b parameter was …
Current Range In Lightning Return Strokes, M. Hemmati, W. P. Childs, D. C. Waters, J. R. Christensen, B. C. Richard
Current Range In Lightning Return Strokes, M. Hemmati, W. P. Childs, D. C. Waters, J. R. Christensen, B. C. Richard
Journal of the Arkansas Academy of Science
In our investigation of breakdown waves, we use a one-dimensional, steady-state, constant velocity fluid model. This investigation involves breakdown waves for which the electric field force on electrons is in the opposite direction of wave propagation. The waves are considered to be shock fronted and the electron gas partial pressure is large enough to sustain the wave propagation. Our basic set of electron fluid-dynamical equations is composed of the equations for conservation of mass, momentum and energy, coupled with Poisson’s equation. This investigation involves breakdown waves for which a large current exists behind the shock front. The current behind the …
Population Structuring And Transmission Dynamics Of A Laboratory Colony Of Gromphadorholaelaps Schaeferi: A Symbiotic Mite Of The Madagascar Hissing Cockroach Gromphadorhina Portentosa, D. J. Richardson
Journal of the Arkansas Academy of Science
Gromphadorholaelaps schaeferi is a symbiotic mite associated with the Madagascar hissing cockroach Gromphdorhina portentosa. The population structuring of G. schaeferi is described based on examination of 19,421 mites collected from 1,915 individuals of G. portentosa taken from a large laboratory colony. The mites exhibited an overall prevalence of 50.7% and mean intensity (+SE) of 20.0 (+0.6) with an infestation intensity range of 1-116, and relative abundance (+SE) of 10.1 (+0.4). Both prevalence and mean intensity of infestation exhibited a dramatic increase with increasing cockroach size/age. By the time cockroaches reach 40 mm the prevalence is nearly 100%. Mean intensity increases …
Morphology Of Rathke's Glands In The Snapping Turtle, Chelydra Serpentina, With Comments On The Presence Of Multilaminar Lamellar Bodies In Turtles, S. E. Trauth
Journal of the Arkansas Academy of Science
I examined the histology and ultrastructure of Rathke’s glands in hatchling, juvenile, and adult snapping turtles (Chelydra serpentina). This species possesses four pairs of Rathke’s glands (i.e., one axillary and three inframarginals) that are embedded beneath marginal bones and are named primarily according to the anatomical location of their orifices. These integumentary glands are similar anatomically and ultrastructurally to one another. Each gland is comprised of a single, highly vascularized, secretory lobule, which is surrounded by a thick tunic of asymmetrically arranged, striated muscle. Two types of large secretory vacuoles characterize most of the holocrine cells produced by a relatively …
Nocturnal Communal Winter Bird Roosts In Northwestern Arkansas, D. A. James
Nocturnal Communal Winter Bird Roosts In Northwestern Arkansas, D. A. James
Journal of the Arkansas Academy of Science
No abstract provided.
New Host And Geographic Distribution Record For The Leech, Myzobdella Reducta (Annelida: Hirudinida: Rhynchobdellida: Piscicolidae), From Arkansas, C. T. Mcallister, W. E. Moser, D. J. Richardson, H. W. Robison
New Host And Geographic Distribution Record For The Leech, Myzobdella Reducta (Annelida: Hirudinida: Rhynchobdellida: Piscicolidae), From Arkansas, C. T. Mcallister, W. E. Moser, D. J. Richardson, H. W. Robison
Journal of the Arkansas Academy of Science
No abstract provided.
New Geographic Distribution Records For Horsehair Worms (Nematomorpha: Gordiida) In Arkansas, Including New State Records For Chordodes Morgani And Paragordius Varius, H. W. Robison, C. T. Mcallister, B. Hanelt
New Geographic Distribution Records For Horsehair Worms (Nematomorpha: Gordiida) In Arkansas, Including New State Records For Chordodes Morgani And Paragordius Varius, H. W. Robison, C. T. Mcallister, B. Hanelt
Journal of the Arkansas Academy of Science
No abstract provided.
Demographics Of Mole Salamanders (Ambystoma Talpoideum) In A Northeastern Arkansas Pond, J. W. Stanley, J. R. Engelbert, M. K. Patrick, J. A. Sawyer, S. E. Trauth
Demographics Of Mole Salamanders (Ambystoma Talpoideum) In A Northeastern Arkansas Pond, J. W. Stanley, J. R. Engelbert, M. K. Patrick, J. A. Sawyer, S. E. Trauth
Journal of the Arkansas Academy of Science
No abstract provided.
Possible New Arkansas Endemic Plant Revealed By Dna Sequence Analysis, A, K. P. Fawley, C. T. Witsell, M. W. Fawley, J. S. Breedlove, R. J. Brockman, A. C. Humphrey, J. M. Lawson, K. N. Mccallie, D. A. Prescott, J. T. Rushing, J. M. Whitaker
Possible New Arkansas Endemic Plant Revealed By Dna Sequence Analysis, A, K. P. Fawley, C. T. Witsell, M. W. Fawley, J. S. Breedlove, R. J. Brockman, A. C. Humphrey, J. M. Lawson, K. N. Mccallie, D. A. Prescott, J. T. Rushing, J. M. Whitaker
Journal of the Arkansas Academy of Science
Cardamine angustata var. ouachitana, a wildflower in the mustard family (Brassicaceae), was described by Smith in 1982 to include a form of Cardamine found only in the Ouachita Mountains of Arkansas. This variety is morphologically very similar to typical Cardamine angustata. The major difference noted by Smith for the two varieties was the complete lack of leaf hairs (trichomes) in the new variety, whereas typical Cardamine angustata normally possesses trichomes. However, Al-Shehbaz rejected the variety ouachitana and reduced it to synonymy with the typical C. angustata. The recommendation of Al-Shehbaz has been followed and the taxon Cardamine angustata var. ouachitana …
Nutrition Knowledge Of Pre-Medical Students, Jennifer Newcome, Cynthia Moore
Nutrition Knowledge Of Pre-Medical Students, Jennifer Newcome, Cynthia Moore
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
Nutrition knowledge has been shown to be increasingly critical in physician practice. Therefore, education has also become very critical. Medical schools have been working over the last few decades to include nutrition education in their curriculum, but due to many barriers, it is difficult to fulfil requirements. It is the purpose of this descriptive study to determine the nutrition knowledge of pre-medical students at the University of Arkansas and conclude if a nutrition class for these students would be beneficial. The average score of the nutrition knowledge assessment was 11.2 ± 3.04 out of a possible 23. Because the literature …
Effect Of Chlorogenic Acid And Neochlorogenic Acid On Human Colon Cancer Cells, Taylor Thurow, Sun-Ok Lee
Effect Of Chlorogenic Acid And Neochlorogenic Acid On Human Colon Cancer Cells, Taylor Thurow, Sun-Ok Lee
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
Prune consumption has been associated with a decreased risk of colon cancer; yet there has been confusion as to which chemical component(s) of the prune are responsible for its anticarcinogenic properties. Previous studies have evaluated chlorogenic acid as a chemotherapeutic agent; however, only a limited amount of studies have investigated neochlorogenic acid, the predominant phenolic compound found in the prune. The purpose of this study was to determine the effects that chlorogenic acid and neochlorogenic acid have as anticarcinogenics on the human adenocarcinoma, Caco-2 cell line. The anti-colon cancer effects of chlorogenic acid and neochlorogenic acid were analyzed by experiments …