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Articles 4171 - 4200 of 5304
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Aquatic Bacteria Removal Using Carbon Nanotubes, Suvish Melanta
Aquatic Bacteria Removal Using Carbon Nanotubes, Suvish Melanta
Biological and Agricultural Engineering Undergraduate Honors Theses
The purpose of this project is to explore the functionality of carbon nanotubes as a bacterial removal method, specifically towards water-borne bacterial pathogens in wastewater by utilizing its unique magnetic and bacteria-binding properties. The general protocol set for this research follows five steps: 1) Preparation of wastewater media, 2) preparation of CNT culture, 3) preparation of reaction mixture with CNTs for bacterial binding, 4) magnetic separation of bacteria-bound-CNT clusters and, 5) assessment of supernatant. The CNTs effectively removed bacterial contaminants in the wastewater (10%, v/v) after the sand filtration process from the Paul R. Noland Wastewater Facility at Fayetteville, Arkansas. …
Computational Modeling Of Oxidative Stress: An Analysis Of Nad (P)H Effects On Nitric Oxide And Superoxide During Hypertension, Aaron Strobel
Computational Modeling Of Oxidative Stress: An Analysis Of Nad (P)H Effects On Nitric Oxide And Superoxide During Hypertension, Aaron Strobel
Biological and Agricultural Engineering Undergraduate Honors Theses
Nitric oxide (NO) is inactivated in the human body when exposed to superoxide (O2 -). This reaction forms peroxynitrite (ONOO-). Superoxide is produced in the cardiac system by several different ways, including NAD(P)H oxidase. Superoxide dismutase (SOD) breaks down superoxide into oxygen and hydrogen peroxide. This prevents superoxide from reacting with nitric oxide and allows normal function to take place. Superoxide and peroxynitrite are main contributors to vascular disease in the human body, in particular hypertension. Experiments have shown that there was an increase of superoxide production in spontaneously hypertensive rats (SHR) vs. age-matched Wistar Kyoto rats (WKY) that were …
Journal Of Food Law & Policy - Spring 2008, Journal Editors
Journal Of Food Law & Policy - Spring 2008, Journal Editors
Journal of Food Law & Policy
No abstract provided.
Dangerous Interpretations Of The Precautionary Principle And The Foundational Values Of European Union Food Law: Risk Versus Risk, Miguel A. Recuerda
Dangerous Interpretations Of The Precautionary Principle And The Foundational Values Of European Union Food Law: Risk Versus Risk, Miguel A. Recuerda
Journal of Food Law & Policy
In their ordinary lives, many people try to avoid any situation involving risk that could cause themselves harm. On the other hand, others assume risk with greater facility because they are not sufficiently aware of it, or because they know that the probability of resulting damage is very low. Overwhelming worry in the face of any kind of risk would be paralyzing (we would not leave the house, eat in any restaurant outside of our home, drive, or fly). On the contrary, an attitude absolutely heedless of risks would end up causing innumerable damages, some of them irreparable. Common sense …
A Comparison Of Nondestructive Testing Backcalculation Techniques For Rigid And Flexible Pavements, Trenton Ellis
A Comparison Of Nondestructive Testing Backcalculation Techniques For Rigid And Flexible Pavements, Trenton Ellis
Civil Engineering Undergraduate Honors Theses
In designing new pavements, engineers rely on many different measures to characterize the average traffic, climate and soil conditions of the region. Of those, soil conditions are the most elusive, but are also the most crucial for designing a pavement of proper thickness and stiffness. This problem is compounded when the design is for an overlay instead of a new pavement. For overlay designs, engineers require a quantitative characterization of the strength of the existing pavement as well as the underlying soil. Especially for new Mechanistic-Empirical design procedures, direct measures and/or estimates of pavement stiffness are essential inputs. A variety …
Wayne E. Sabbe Arkansas Soil Fertility Studies 2007, Nathan A. Slaton
Wayne E. Sabbe Arkansas Soil Fertility Studies 2007, Nathan A. Slaton
Arkansas Agricultural Experiment Station Research Series
Rapid technological changes in crop management and production require that the research efforts also be presented in an expeditious manner. The contributions of soil fertility and fertilizers are major production factors in all Arkansas crops. The studies described within will allow producers to compare their practices with the university’s research efforts. Additionally, soil test data and fertilizer sales are presented to allow comparisons among years, crops, and other areas within Arkansas.
Graduate, Spring-Summer 2008, Dale Bumpers College Of Agricultural, Food, And Life Sciences (University Of Arkansas, Fayetteville)
Graduate, Spring-Summer 2008, Dale Bumpers College Of Agricultural, Food, And Life Sciences (University Of Arkansas, Fayetteville)
Graduate
"For alumni and friends of the Dale Bumpers College of Agricultural, Food and Life Sciences and the University of Arkansas System Division of Agriculture."
Projecting The Economic Impact Of The Fayetteville Shale Play For 2008-2012, Katherine A. Deck
Projecting The Economic Impact Of The Fayetteville Shale Play For 2008-2012, Katherine A. Deck
Publications and Presentations
In 2006, the Center for Business and Economic Research released an economic impact study of the newly developing natural gas industry related to the Fayetteville Shale. The Fayetteville Shale is an unconventional gas reservoir located on the Arkansas side of the Arkoma Basin, ranging in thickness from 50 to 325 feet and ranging in depth from 1,500 to 6,500 feet. That study concluded that from 2005 to 2008, economic output of over $5.5 billion and 9,683 jobs would be generated as a result of investments in the Fayetteville Shale. Those estimates were based on the best information available when the …
Arkansas Physics Times, February 21, 2008, Society Of Physics Students (American Institute Of Physics)
Arkansas Physics Times, February 21, 2008, Society Of Physics Students (American Institute Of Physics)
Arkansas Physics Times
No abstract provided.
Milwaukee Longitudinal School Choice Evaluation: Annual School Testing Summary Report, Nathan L. Gray, Patrick J. Wolf, Laura I. Jensen
Milwaukee Longitudinal School Choice Evaluation: Annual School Testing Summary Report, Nathan L. Gray, Patrick J. Wolf, Laura I. Jensen
School Choice Demonstration Project
With the passage of 2005 Wisconsin Act 125, private schools participating in the Milwaukee Parental Choice Program (MPCP) are now required to administer a nationally normed standardized test annually in reading, mathematics, and science to their MPCP (a.k.a. “Choice”) students enrolled in the 4th, 8th, and 10th grades. The law further directs Choice schools to submit copies of the scores from those tests to the School Choice Demonstration Project (SCDP) for processing and reporting to the Legislative Audit Bureau. During the 2006-07 school year, MPCP schools administered either nationally normed tests, such as the Iowa Test of Basic Skills, or …
Arkansas Volleyball, 2008, University Of Arkansas, Fayetteville. Athletics Media Relations, University Of Arkansas, Fayetteville. Women's Athletics Department. Women's Communications Office, University Of Arkansas, Fayetteville. Women's Athletics Department. Women's Sports Information Office
Arkansas Volleyball, 2008, University Of Arkansas, Fayetteville. Athletics Media Relations, University Of Arkansas, Fayetteville. Women's Athletics Department. Women's Communications Office, University Of Arkansas, Fayetteville. Women's Athletics Department. Women's Sports Information Office
Arkansas Volleyball
Issued by: Women's Communications Office, 1996-2007; Athletics Media Relations, 2008-2009
Catalog Of Studies, 2007-2008, University Of Arkansas, Fayetteville
Catalog Of Studies, 2007-2008, University Of Arkansas, Fayetteville
Undergraduate Catalog of Studies
No abstract provided.
Education Policy News, Winter 2008, University Of Arkansas, Fayetteville. Dept. Of Education Reform. Office For Education Policy
Education Policy News, Winter 2008, University Of Arkansas, Fayetteville. Dept. Of Education Reform. Office For Education Policy
Education Policy News
No abstract provided.
Annual Report, 2007-2008, Mack-Blackwell National Rural Transportation Study Center (U.S.)
Annual Report, 2007-2008, Mack-Blackwell National Rural Transportation Study Center (U.S.)
Mack Blackwell Rural Transportation Center Annual Report
No abstract provided.
Comparing Arkansas Students To Their National Peers, Sarah C. Mckenzie, Gary W. Ritter
Comparing Arkansas Students To Their National Peers, Sarah C. Mckenzie, Gary W. Ritter
Policy Briefs
In an attempt to gauge the educational progress of the nation and each state, Education Week has published state report cards since 1997 in its annual Quality Counts series. The 12th annual report, Tapping into Teaching: Unlocking the Key to Student Success, was released in early 2008 and merges the indicators from the shortened 2007 report, which focused on the “cradle-to-career” framework, with previous indicators such as efforts to improve teacher quality and school finance. To compare states across the nation, the Quality Counts series grades and ranks states based on six broad measures: efforts to improve the teacher quality; …
Annual Report, 2007-2008, University Of Arkansas, Fayetteville. College Of Education And Health Professions
Annual Report, 2007-2008, 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
Annual Report, 2008, University Of Arkansas, Fayetteville. Department Of Industrial Engineering.
Annual Report, 2008, University Of Arkansas, Fayetteville. Department Of Industrial Engineering.
Industrial Engineering Annual Report
No abstract provided.
Graduate School Catalog, 2007-2008, University Of Arkansas, Fayetteville
Graduate School Catalog, 2007-2008, University Of Arkansas, Fayetteville
Graduate School Catalog of Studies
No abstract provided.
Annual Report, 2008, University Of Arkansas, Fayetteville. School Of Continuing Education And Academic Outreach
Annual Report, 2008, University Of Arkansas, Fayetteville. School Of Continuing Education And Academic Outreach
School of Continuing Education and Academic Outreach - Global Campus Annual Report
No abstract provided.
Runoff Using A Combined Geographic Information System And Curve Number Approach, Keshia M. Koehn
Runoff Using A Combined Geographic Information System And Curve Number Approach, Keshia M. Koehn
Inquiry: The University of Arkansas Undergraduate Research Journal
Stormwater runoff can transport nutrients, sediments, chemicals, and pathogens to surface water bodies. Managing runoff is crucial to preserving water quality in rapidly developing urban watersheds like Northwest Arkansas. A watershed containing much of the University of Arkansas campus was identified as the target area for this study because stormwater from this location drains into the West Fork of the White River, designated as an impaired water body due to siltation. The project objective was to develop a methodology to test existing stormwater drainage infrastructure, identify potential areas of improvement, and estimate potentially contaminated runoff by combining two widely used …
The Impact Of Severance Taxes On The Arkansas Natural Gas Market, Tammy Lippert
The Impact Of Severance Taxes On The Arkansas Natural Gas Market, Tammy Lippert
Inquiry: The University of Arkansas Undergraduate Research Journal
The recent development of the Fayetteville Shale Play, an unconventional natural gas reservoir in Central and Eastern Arkansas, has created considerable opportunities for the state and its citizens as the industry has made substantial investment in the region. These developments have resulted in thousands of new jobs for Arkansans, billions of dollars in direct and indirect output, and millions in state and local tax revenues. One of the most visible issues in recent state news has been the controversy surrounding the severance tax levied by the state government on the extraction of natural gas. The question at hand has been …
Computational Modeling Of Oxidative Stress: An Analysis Of Nad(P)H Effects On Nitric Oxide And Superoxide During Hypertension, Aaron Strobel
Computational Modeling Of Oxidative Stress: An Analysis Of Nad(P)H Effects On Nitric Oxide And Superoxide During Hypertension, Aaron Strobel
Inquiry: The University of Arkansas Undergraduate Research Journal
Nitric oxide (NO) is inactivated in the human body when exposed to superoxide (02-). This reaction forms peroxynitrite (ONOO). Superoxide is produced in the cardiac system by several mechanisms, including NAD(P)H oxidase. Superoxide dismutase (SOD) breaks down superoxide into oxygen and hydrogen peroxide. This prevents superoxide from reacting with nitric oxide and allows normal function to take place. Superoxide and peroxynitrite are main contributors to vascular disease in the human body, in particular hypertension.
Taking Another Look: Light N-Capture Element Abundances In Metal-Poor Halo Stars, D. Burris, E. Jones, J. Lusk
Taking Another Look: Light N-Capture Element Abundances In Metal-Poor Halo Stars, D. Burris, E. Jones, J. Lusk
Journal of the Arkansas Academy of Science
Elements are produced in stars through a variety of processes; some are well known, others are still the object of active research. The elements Zirconium (Zr) and Yttrium (Y) are produced via neutron capture (ncapture). These elements reside in the mass range where there is uncertainty about the production mechanism at early time. The rapid n-capture process (r-process) was believed to be responsible for the production, but no study (Burris et al 2000, Gilroy et al 1988 and others) has been able to successfully use the r-process to reproduce the abundance signature for elements in this mass range for metal-poor …
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.
Relative Searching Using An Ordered Token List, Anthony Rosequist
Relative Searching Using An Ordered Token List, Anthony Rosequist
Inquiry: The University of Arkansas Undergraduate Research Journal
Many organizations have large amounts of information, such as consumer data, that need to be processed. Traditional searching algorithms only attempt to find exact matches to particular queries. This is undesirable when data are missing, outdated, or inaccurate. Therefore, a new type of search must be developed to locate records that are considered "interesting" to the user. This research paper examines past attempts to solve this problem and explores a new method involving ordered token lists to achieve this goal. The algorithm was developed, implemented, tested, and optimized.
Ionization Rate, Temperature, And Number Density For Breakdown Waves With A Large Current Behind The Shock Front, S. Norman, Mostafa Hemmati, J. King
Ionization Rate, Temperature, And Number Density For Breakdown Waves With A Large Current Behind The Shock Front, S. Norman, Mostafa Hemmati, J. King
Journal of the Arkansas Academy of Science
A three component, one-dimensional, constant velocity, steady-state fluid model is employed to describe the breakdown waves with a current behind the wave front propagating into a neutral gas subjected to an external electric field. Electron gas partial pressure is much larger than that of the other species and therefore is considered to provide the driving force for the wave. The system of equations includes the equations of conservation of mass, momentum, and energy coupled with Poisson’s equation. Inclusion of current behind the wave front in the system of fluid equations also alters the initial boundary conditions and ionization rate. We …
Life Cycle Analysis For The Cultivation And Combustion Of Miscanthus For Biofuel Compared With Natural Gas, Amanda Ashworth, Charles West, Michael Popp, Mireille Montrejaud-Vignoles, Caroline Sablayrolles, Gabrielle Benoit
Life Cycle Analysis For The Cultivation And Combustion Of Miscanthus For Biofuel Compared With Natural Gas, Amanda Ashworth, Charles West, Michael Popp, Mireille Montrejaud-Vignoles, Caroline Sablayrolles, Gabrielle Benoit
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
As negative environmental and economic impacts of fossil fuels have escalated, so has the importance of renewable bioenergy crops whose feedstocks are noncompetitive with food supplies. Compared with fossil fuels, use of lignocellulosic feedstocks offers potential for greenhouse gas reduction and highly positive net energy returns because of low input demand and high yields per unit of land area, thus making them advantageous for the emerging biofuel industry. The aim of this study was to simulate environmental impacts of producing a biofuel grass for combustion use based on the inventory of inputs and their effects on eutrophication of surface waters; …
Using Combined Prediction Models To Quantify And Visualize Stormwater Runoff In An Urban Watershed, Keshia Koehn, Cristina Scarlat, Kristofor Brye
Using Combined Prediction Models To Quantify And Visualize Stormwater Runoff In An Urban Watershed, Keshia Koehn, Cristina Scarlat, Kristofor Brye
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
Stormwater runoff can transport nutrients, sediments, chemicals, and pathogens to surface waterbodies. Managing runoff is crucial to preserving water quality in rapidly developing urban watersheds like those in Northwest Arkansas. A watershed containing the majority of the University of Arkansas campus was designated as the study area because stormwater from it drains into the West Fork of the White River, designated as an impaired waterbody due to siltation. The project objective was to develop methodology to test existing stormwater drainage infrastructure, identify potential areas of improvement, and estimate potentially contaminated runoff by combining two widely used prediction models. The U.S. …
Using Biosolids To Enhance Phytoremediation Of Oil-Contaminated Soil, Heather N. Markway, Duane C. Wolf, Kaaron J. Davis, Edward E. Gbur
Using Biosolids To Enhance Phytoremediation Of Oil-Contaminated Soil, Heather N. Markway, Duane C. Wolf, Kaaron J. Davis, Edward E. Gbur
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
While the plant rhizosphere and associated microbial processes have been shown to amplify the degradation rate of chemical residues in soils, phytoremediation can be a slow process. The objective of this greenhouse study was to determine if the addition of biosolids as an organic soil amendment would enhance growth of plants in oil-contaminated soil and thus potentially increase effectiveness of phytoremediation. Pearl millet (Pennisetum glaucum (L.) R. Br.) or sudangrass (Sorghum sudanense (Piper) Stapf (Piper)) was grown in a Captina silt loam (finesilty, siliceous, mesic Typic Fragiudults) contaminated with 5% crude oil (v/w) and amended with 24 g biosolids/kg soil. …
Resonance Raman Spectroscopy For The Investigation Of Heteroleptic Ruthenium Polypyridine Complexes, Anwar A. Bhuiyan
Resonance Raman Spectroscopy For The Investigation Of Heteroleptic Ruthenium Polypyridine Complexes, Anwar A. Bhuiyan
Journal of the Arkansas Academy of Science
No abstract provided.