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Articles 1 - 30 of 45
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Title Of A Paper Prepared For The Arkansas Academy Of Science Journal [Instructions For Prospective Authors], Academy Editors
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.
Journal Acknowledgments, Academy Editors
Journal Acknowledgments, Academy Editors
Journal of the Arkansas Academy of Science
No abstract provided.
Table Of Contents, Academy Editors
Table Of Contents, Academy Editors
Journal of the Arkansas Academy of Science
No abstract provided.
Journal Of The Arkansas Academy Of Science- Volume 67 2013, Academy Editors
Journal Of The Arkansas Academy Of Science- Volume 67 2013, Academy Editors
Journal of the Arkansas Academy of Science
No abstract provided.
Keynote Speaker And Meeting Program, Jeff Gaffney, Academy Editors
Keynote Speaker And Meeting Program, Jeff Gaffney, Academy Editors
Journal of the Arkansas Academy of Science
No abstract provided.
Acknowledgment Of The Major Sponsors Of The Academy: Arkansas Natural Heritage Commission; Ouachita National Forest, Academy Editors
Acknowledgment Of The Major Sponsors Of The Academy: Arkansas Natural Heritage Commission; Ouachita National Forest, Academy Editors
Journal of the Arkansas Academy of Science
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.
Assessment Of The Modern Fish Assemblage In Mound Pond (Lonoke County) And Comparison With The Archeological Record, A. V. Fernando, M. A. Eggleton
Assessment Of The Modern Fish Assemblage In Mound Pond (Lonoke County) And Comparison With The Archeological Record, A. V. Fernando, M. A. Eggleton
Journal of the Arkansas Academy of Science
Mound Pound is a 56-ha oxbow lake of the Arkansas River. The lake has been disconnected from the Arkansas River main channel for over 2,500 years. The lake lies adjacent to the Toltec Mounds Archeological State Park, which contains the Toltec Mound Complex (3LN42). In October 2012, a multiple-gear sampling of the fish assemblage in Mound Pond was conducted using boat-mounted electrofishing, mini-fyke nets, and experimental gill nets. Across all gears, 501 fish specimens were collected and identified to species. Percent Similarity Index (PSI) and Shannon-Weiner Diversity Index (H') values were calculated using data from this survey and a previous …
Microsatellite Analysis Of Trophy Largemouth Bass From Arkansas Reservoirs, K. A. Lamothe, Ronald L. Johnson
Microsatellite Analysis Of Trophy Largemouth Bass From Arkansas Reservoirs, K. A. Lamothe, Ronald L. Johnson
Journal of the Arkansas Academy of Science
The Arkansas Game and Fish Commission (AGFC) has introduced Florida largemouth bass (FLMB; Micropterus salmoides floridanus) to water bodies historically containing the northern largemouth bass (NLMB; Micropterus salmoides salmoides) subspecies since the late 1970s in an attempt to produce a trophy LMB fishery. Since 2006, the AGFC has been biannually sampling reservoirs stocked with FLMB to determine levels of admixture. Here, total sampling efforts between 2006 and 2011 have been combined, and LMB heavier than 2,268 g (5 lb) were analyzed in an effort to investigate distribution of bass by their genetic composition designated as trophy LMB by the AGFC. …
Wave Profile For Current Bearing Antiforce Waves, H. Morris, W. Childs, P. Pinkston, M. Hemmati, J. Christensen
Wave Profile For Current Bearing Antiforce Waves, H. Morris, W. Childs, P. Pinkston, M. Hemmati, J. Christensen
Journal of the Arkansas Academy of Science
For fluid dynamical analysis of breakdown waves, we employ a one-dimensional, three-component (electrons, ions and neutral particles) fluid model to describe a steady-state, ionizing wave propagating counter to strong electric fields. The electron gas temperature and therefore the electron fluid pressure is assumed to be large enough to sustain the wave motion down the discharge tube. Such waves are referred to as antiforce waves. The complete set of equations describing such waves consists of the equations of conservation of mass, momentum and energy coupled with Poisson’s equation. Inclusion of current behind the wave front alters the set of electron fluid …
Relationship Between Land-Use And Water Quality In Spring-Fed Streams Of The Ozark National Forest, A. Smartt, S. Ganguly, M. A. Evans-White, B. E. Haggard
Relationship Between Land-Use And Water Quality In Spring-Fed Streams Of The Ozark National Forest, A. Smartt, S. Ganguly, M. A. Evans-White, B. E. Haggard
Journal of the Arkansas Academy of Science
Spring-fed streams are abundant in karst topographic regions such as the Ozarks, providing an important and valuable water resource. Many of these spring-fed streams presently receive agriculture runoff, but few studies have examined the impacts of this runoff on water quality. We examined water quality in Ozark spring-fed streams surrounded by either agricultural (N=3) or primarily forested land (N=3) in the riparian zone. We hypothesized that agricultural sites would have greater dissolved nutrient concentrations and conductivity than forested sites and that water quality would fluctuate with distance from the spring source. Conductivity (p
Status Of Tridens X Oklahomensis (Poaceae) And Updated Treatment Of The Genus Tridens In Arkansas, C. T. Witsell, Brent Baker
Status Of Tridens X Oklahomensis (Poaceae) And Updated Treatment Of The Genus Tridens In Arkansas, C. T. Witsell, Brent Baker
Journal of the Arkansas Academy of Science
We report the documentation of Tridens × oklahomensis, the naturally-occurring interspecific hybrid between Tridens flavus and Tridens strictus, from Arkansas. Collections of this uncommon hybrid were made from open, often disturbed habitat in 12 counties and observations without collections were made in 3 additional counties. All records occurred in areas with populations of both parent species. A summary of occupied site characteristics and a map of the known range within Arkansas are presented along with photographs illustrating T. × oklahomensis in comparison with both parent species. Keys, notes on habitat, and updated range maps are also presented for all known …
Observations Of The Behavior Of The Giant Prairie Robberfly, Microstylum Morosum Loew (Diptera: Asilidae) At Terre Noire Natural Area, Clark County, Arkansas, R. Tumlison, K. Benjamin
Observations Of The Behavior Of The Giant Prairie Robberfly, Microstylum Morosum Loew (Diptera: Asilidae) At Terre Noire Natural Area, Clark County, Arkansas, R. Tumlison, K. Benjamin
Journal of the Arkansas Academy of Science
No abstract provided.
Reappearance Of The Eastern Collared Lizard (Crotaphytus Collaris) Along Shorelines Of Bull Shoals Lake In Northern Arkansas, J. L. Rheubert, S. E. Trauth
Reappearance Of The Eastern Collared Lizard (Crotaphytus Collaris) Along Shorelines Of Bull Shoals Lake In Northern Arkansas, J. L. Rheubert, S. E. Trauth
Journal of the Arkansas Academy of Science
No abstract provided.
Acute Effects Of Exercise On Cognitive Performances Of Older Adults, R. Pennington, S. Hanna
Acute Effects Of Exercise On Cognitive Performances Of Older Adults, R. Pennington, S. Hanna
Journal of the Arkansas Academy of Science
Accelerating rates of structural decline become evident during the third and fourth decades of human life, with disproportionate degeneration occurring in the frontal, parietal, and temporal brain lobes. As the structure of the brain declines, a broad array of cognitive processes involving memory, decision making, and selective attention are reduced as well (Raz 2000, Park et al. 2001). Cardiovascular exercise has been associated with improved cognitive functioning in aging humans, suggesting that increased vascular supply enhances availability of oxygen, nutrients, and other physical entities to nourish the brain. Previous experimentation on older adults revealed significant positive effects of exercise on …
Eastern Spotted Skunk (Spilogale Putorius) At The Ouachita Mountains Biological Station, Polk County, Arkansas, L. M. Hardy
Eastern Spotted Skunk (Spilogale Putorius) At The Ouachita Mountains Biological Station, Polk County, Arkansas, L. M. Hardy
Journal of the Arkansas Academy of Science
A population of the eastern spotted skunk (Spilogale putorius) has been discovered at the Ouachita Mountains Biological Station in the Ouachita Mountains of Polk County, Arkansas. In 2010 a motion camera recorded a very brief infrared video of an animal that, after much study and conversation with other biologists, was concluded to be an eastern spotted skunk. Since that time the identification has been confirmed with at least 6 still photographs and one additional video that have been obtained from 2 other locations on the station. At least 2 or 3 individuals are present. All were photographed at night in …
Distribution Of Yellow Grub (Clinostomum Marginatum) Metacercariae In Black Bass (Micropterus Spp.) From Arkansas Ozark And Ouachita Reservoir Lakes, James J. Daly Sr.
Distribution Of Yellow Grub (Clinostomum Marginatum) Metacercariae In Black Bass (Micropterus Spp.) From Arkansas Ozark And Ouachita Reservoir Lakes, James J. Daly Sr.
Journal of the Arkansas Academy of Science
No abstract provided.
Millipeds (Arthropoda: Diplopoda) Of The Ark - La - Tex. Vi. New Geographic Distributional Records From Select Counties Of Arkansas, C. T. Mcallister, H. W. Robison, L. C. Thompson, M. B. Connior
Millipeds (Arthropoda: Diplopoda) Of The Ark - La - Tex. Vi. New Geographic Distributional Records From Select Counties Of Arkansas, C. T. Mcallister, H. W. Robison, L. C. Thompson, M. B. Connior
Journal of the Arkansas Academy of Science
We continue to report, in the sixth of a series of papers, new geographic records for millipeds of the state, including noteworthy records for some taxa collected from Crowley’s Ridge in eastern Arkansas. This contribution documents 47 new co. records and includes records for 19 species within 9 families and 5 orders. More uncommon millipeds found included Okliulus carpenteri (Parajulidae), Eurymerodesmus newtonus (Eurymerodesmidae), Pseudopolydesmus minor (Polydesmidae) and undescribed species of Ethojulus (Parajulidae) and Nannaria (Xystodesmidae). Undoubtedly, additional records will be reported in the future as several gaps in the distribution of Arkansas millipeds remain.
Trajectory Generation For Stair Ascent Walking Using Rayleigh Oscillator, T. Afzal, Andrew B. Wright, Kamran Iqbal
Trajectory Generation For Stair Ascent Walking Using Rayleigh Oscillator, T. Afzal, Andrew B. Wright, Kamran Iqbal
Journal of the Arkansas Academy of Science
This paper describes a trajectory generation technique for stair-ascent walking. The knee, hip and ankle joint trajectory during stair ascent are generated using mutually coupled, nonlinear oscillators. The parameters of the oscillators are tuned using the harmonic balance method, which converts the nonlinear differential equations to a set of algebraic equations. Fourier analysis of data generated by stair-ascent walking is performed to extract the amplitude and the phase of the dominant frequency components for each joint trajectory. The solution for the oscillator is assumed to be a sinusoidal wave and then by harmonic balance method the parameters of the oscillator …
Scarab Beetles (Coleoptera: Scarabaeidae) In The Dung Of Native Arkansas Mammals, J. B. Kelley, J. L. Hunt, M. B. Connior
Scarab Beetles (Coleoptera: Scarabaeidae) In The Dung Of Native Arkansas Mammals, J. B. Kelley, J. L. Hunt, M. B. Connior
Journal of the Arkansas Academy of Science
Dung beetles are important ecological components of natural ecosystems. One primary activity is the fragmentation and recycling of animal dung. Little is known about the ecological impact of beetles associated with the dung of mammals native to Arkansas. We surveyed the dung of native mammals within Arkansas to determine the species and distributional patterns associated with dung. We searched and collected beetles in situ from the dung or nests of native mammalian species within Arkansas. We also set simple pitfall traps using dung of various native Arkansas mammals as bait. Most of the beetles collected were common dung beetles. However, …
Titanium-Oxygen Bond Length -Bond Valence Relationship, D. Dodd, F. D. Hardcastle, S. Laffoon
Titanium-Oxygen Bond Length -Bond Valence Relationship, D. Dodd, F. D. Hardcastle, S. Laffoon
Journal of the Arkansas Academy of Science
A bond length–bond valence correlation is a simple method of checking and evaluating molecular structures and is of great interest in chemistry, biology, geology, and material science. Recently, we used quantum-mechanical arguments to derive Pauling’s bond length-valence relationship and to define the adjustable fitting parameter b in terms of atomic-orbital exponents. Improved orbital exponents were generated for elements 1-103 using published atomic radii and single-bond covalent radii as well as a continuous function for effective principal quantum number. In this study, we use orbital exponents for titanium (Ti) and oxygen (O) to generate a bond length-valence relationship for Ti-O bonds. …
Distribution, Conservation And Current Status Of Three Endemic Heterosternuta (Coleoptera: Dytiscidae: Hydroporinae) In Arkansas, S. D. Longing, P. A. Bacon, George L. Harp
Distribution, Conservation And Current Status Of Three Endemic Heterosternuta (Coleoptera: Dytiscidae: Hydroporinae) In Arkansas, S. D. Longing, P. A. Bacon, George L. Harp
Journal of the Arkansas Academy of Science
No abstract provided.
Microwave Assisted Synthesis Of Chloropentahaptocyclopentadienediphenylphosphinoethaneruthenium(Ii), S. Muthyala, Mark Draganjac
Microwave Assisted Synthesis Of Chloropentahaptocyclopentadienediphenylphosphinoethaneruthenium(Ii), S. Muthyala, Mark Draganjac
Journal of the Arkansas Academy of Science
No abstract provided.
Distribution Of Soil Density At A Bottomland Hardwood Forest Wetland Restoration, Chicot County, Arkansas, B. E. Sleeper, Robert L. Ficklin
Distribution Of Soil Density At A Bottomland Hardwood Forest Wetland Restoration, Chicot County, Arkansas, B. E. Sleeper, Robert L. Ficklin
Journal of the Arkansas Academy of Science
Bottomland hardwood forest (BLHF) soils provide a myriad of ecosystem services, yet much information is lacking with respect to how soil physical properties influence biogeochemical cycling along topographic gradients. Current patterns of vegetation at a 149ha wetland restoration site in Chicot County, Arkansas, suggest the presence of ecologically significant variation in soil properties within the Perry Clay soil series. A study was initiated in the Lower Mississippi Alluvial Valley (LMAV) to map soil bulk density and texture as well as to identify the interrelationships between soil physical properties, soil organic carbon, and total nitrogen. A random grid was used to …
Molecular Structure Of Pentahaptocyclopentadienebis (Tetrahydrothiophene) Triphenylphosphineruthenium(Ii) Triflate, Paul M. Nave, Mark Draganjac, A. W. Cordes
Molecular Structure Of Pentahaptocyclopentadienebis (Tetrahydrothiophene) Triphenylphosphineruthenium(Ii) Triflate, Paul M. Nave, Mark Draganjac, A. W. Cordes
Journal of the Arkansas Academy of Science
No abstract provided.
Dark Energy Interaction Models, H. Shojaei, D. Waters
Dark Energy Interaction Models, H. Shojaei, D. Waters
Journal of the Arkansas Academy of Science
A specific interaction between dark energy and matter has been introduced in order to present possible solutions to the cosmic coincidence problem. We also compared the result of our differential equations with the experimental supernova data obtained by WMAP.
New Host Records For The Fish Leech Cystobranchus Klemmi (Hirudinida: Piscicolidae) On Cyprinid Fishes From Arkansas And Oklahoma, Dennis J. Richardson, R. Tumlison, J. W. Allen Jr., W. E. Moser, C. T. Mcallister, S. E. Trauth, H. W. Robison
New Host Records For The Fish Leech Cystobranchus Klemmi (Hirudinida: Piscicolidae) On Cyprinid Fishes From Arkansas And Oklahoma, Dennis J. Richardson, R. Tumlison, J. W. Allen Jr., W. E. Moser, C. T. Mcallister, S. E. Trauth, H. W. Robison
Journal of the Arkansas Academy of Science
No abstract provided.
Accuracy Assessment Of The 2006 National Land Cover Database Percent Impervious Dataset, D. E. Long Ii, J. D. Carr, Hal O. Liechty, Chris Stuhlinger
Accuracy Assessment Of The 2006 National Land Cover Database Percent Impervious Dataset, D. E. Long Ii, J. D. Carr, Hal O. Liechty, Chris Stuhlinger
Journal of the Arkansas Academy of Science
An impervious surface is any surface that prevents water from infiltrating the ground. As impervious surface area increases within watersheds, stream networks and water quality are negatively impacted. The Multi-Resolution Land Characteristic Consortium developed a percent impervious dataset using Landsat imagery as part of the 2006 National Land Cover Database. This percent impervious dataset estimates imperviousness for each 30-meter cell in the land cover database. The percent impervious dataset permits study of impervious surfaces, can be used to identify impacted or critical areas, and allows for development of impact mitigation plans; however, the accuracy of this dataset is unknown. To …
Perch-Type Characteristics Of Overwintering Red-Tailed Hawks (Buteo Jamaicensis) And American Kestrels (Falco Sparverius), A. J. Worm, M. M. Bobowski, Thomas S. Risch
Perch-Type Characteristics Of Overwintering Red-Tailed Hawks (Buteo Jamaicensis) And American Kestrels (Falco Sparverius), A. J. Worm, M. M. Bobowski, Thomas S. Risch
Journal of the Arkansas Academy of Science
Red-tailed Hawks (Buteo jamaicensis) and American Kestrels (Falco sparverius) are primarily sitand-wait predators that rely on perches to forage most efficiently. Overwintering Red-tailed Hawks and American Kestrels use available perches (e.g., utility poles and wires, trees, fences, gates, etc.) to hunt for prey items in agricultural fields in northeast Arkansas. Observations were made from December 2011-March 2012 and November 2012-March 2013 in three representative cover-types (short rice stubble, soybean stubble, and fallow areas including roadsides) to determine which perch-types were used by Red-tailed Hawks and American Kestrels. Utility pole crossbeams at an average height of 6.3 m were the main …
Initial Survey On Black-Spot Disease (Digenea: Strigeoidea: Diplostomidae) In Select Arkansas Fishes, C. T. Mcallister, R. Tumlison, H. W. Robison, S. E. Trauth
Initial Survey On Black-Spot Disease (Digenea: Strigeoidea: Diplostomidae) In Select Arkansas Fishes, C. T. Mcallister, R. Tumlison, H. W. Robison, S. E. Trauth
Journal of the Arkansas Academy of Science
No abstract provided.