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- Journal of the Arkansas Academy of Science (37)
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Articles 1 - 30 of 181
Full-Text Articles in Entire DC Network
Arkansas Water Resources Center Annual Technical Report, 2006, Arkansas Water Resources Center
Arkansas Water Resources Center Annual Technical Report, 2006, Arkansas Water Resources Center
Arkansas Water Resources Center Annual Report
No abstract provided.
Synthesis Of Stable Colloidal Nanocrystals Using Organic Dendrons, Xiaogang Peng, Haiyan Chen
Synthesis Of Stable Colloidal Nanocrystals Using Organic Dendrons, Xiaogang Peng, Haiyan Chen
Patents Granted
A method for stabilizing colloidal suspensions of nanocrystals or nanoparticles in a solvent or solid matrix is provided by coating the nanocrystals with bulky organic molecules, specifically dendrons, is described. By coating nanocrystals with a dense organic dendron coat and further cross-linking the dendron ligands, oxidation of the nanocrystals and dissociation of the ligands are avoided. This invention allows nanocrystals to undergo rigorous purification and processing. It may regularly be applied to a variety of nanocrystals.
Microfluidics And Small Volume Mixing Based On Redox Magnetohydrodynamics Methods, Ingrid Fritsch, Christopher S. Carter, Zoraida P. Aguilar
Microfluidics And Small Volume Mixing Based On Redox Magnetohydrodynamics Methods, Ingrid Fritsch, Christopher S. Carter, Zoraida P. Aguilar
Patents Granted
Microfluidic channels utilizing magnetohydrodynamics are used to pump very small volumes of solution. The channels have electrodes along the walls of the channel and a current carrying species within the solution carries the current through the solution. The electric field generated by the use of the current carrying species is perpendicular to a magnetic field applied to the channel. The combination of the electric and magnetic fields causes the solution to flow through the channel.
Multilayer Microcavity Devices And Methods, Ingrid Fritsch, Charles S. Henry, Benjamin P. Bowen, Walter R. Vandaveer, Nicole Bratcher
Multilayer Microcavity Devices And Methods, Ingrid Fritsch, Charles S. Henry, Benjamin P. Bowen, Walter R. Vandaveer, Nicole Bratcher
Patents Granted
Microcavities and micropores that are microscopic (mm) in width and depth and contain any number of individually-addressable electrodes separated by insulators along the walls of each cavity are described. The conducting materials, and the insulator materials can be deposited alternately onto a starting substrate, which is typically an oxidized silicon wafer or polyimide film, but may be any substrate that shows good adhesion to the materials layered on it. The cavities are etched through these layers, perpendicular to the plane of the substrate, exposing the layers at their edges. Pores may be carved entirely through the device.
Partners, December 2006, Dale Bumpers College Of Agricultural, Food, And Life Sciences (University Of Arkansas, Fayetteville). Center Of Excellence For Poultry Science
Partners, December 2006, Dale Bumpers College Of Agricultural, Food, And Life Sciences (University Of Arkansas, Fayetteville). Center Of Excellence For Poultry Science
Partners
No abstract provided.
A Comparative Study Of Hybrid And Internet-Based Educational Technology Course Modules, Nilly Adnan Al-Banna
A Comparative Study Of Hybrid And Internet-Based Educational Technology Course Modules, Nilly Adnan Al-Banna
Graduate Theses and Dissertations
The purpose of this study was to examine students’ attitudes and performance toward the teaching methods in an educational technology course. Undergraduate students enrolled in the Educational Technology course ETEC 2002L at the University of Arkansas had been exposed to both on-line modules and in-class instruction. The sample size for this study was 155. The results included 110 valid surveys completed by the students on paper. The data collected from the survey were analyzed using percentages, means, and t test of paired samples to find if there was a significant difference in students’ attitudes toward on-line versus hybrid instruction. Four …
Design Of Novel Experimental Techniques To Investigate The Formation Of Nanoparticle-Based Tribofilms, Corey Thompson
Design Of Novel Experimental Techniques To Investigate The Formation Of Nanoparticle-Based Tribofilms, Corey Thompson
Mechanical Engineering Undergraduate Honors Theses
Nano-engineered lubricant additives such as organically-active nanoparticles of molybdenum disulphide (Hybrid-milled MoS2) are becoming increasingly popular in the fight against harsh friction and wear that occurs during boundary-layer lubrication. A previous paper (Verma, 2007), has reported improvements in both coefficient of friction and wear scar diameter; however, there exists very little data concerning the methods through which this improvement is achieved. Using techniques such as atomic force microscopy (AFM), nanoindentation, scanning electron microscopy (SEM), focused ion beam (FIB), high resolution transmission electron microscopy (HRTEM) as well as tribometery, the chemical and mechanical characteristics of the nanoparticle based tribofilm are characterized. …
Arkansas Animal Science Department Report 2006, Zelpha B. Johnson, D. Wayne Kellogg
Arkansas Animal Science Department Report 2006, Zelpha B. Johnson, D. Wayne Kellogg
Arkansas Agricultural Experiment Station Research Series
No abstract provided.
Avian Advice, Winter 2006, Dale Bumpers College Of Agricultural, Food, And Life Sciences (University Of Arkansas, Fayetteville). Center Of Excellence For Poultry Science, University Of Arkansas (System). Cooperative Extension Service
Avian Advice, Winter 2006, Dale Bumpers College Of Agricultural, Food, And Life Sciences (University Of Arkansas, Fayetteville). Center Of Excellence For Poultry Science, University Of Arkansas (System). Cooperative Extension Service
Avian Advice
No abstract provided.
Rice Cultivar ‘Banks’, Karen A. K. Moldenhauer, Fleet N. Lee
Rice Cultivar ‘Banks’, Karen A. K. Moldenhauer, Fleet N. Lee
Patents Granted
A rice cultivar designated ‘Banks’ is disclosed. The invention relates to the seeds of rice cultivar ‘Banks’, to the plants of rice ‘Banks’ and to methods for producing a rice plant produced by crossing the cultivar ‘Banks’ with itself or another rice variety. The invention further relates to hybrid rice seeds and plants produced by crossing the cultivar ‘Banks’ with another rice cultivar.
Apparatus And Method For Removal Of Seed Pericarp, Jason M. Cope, Wade Yang, Billy Davidson
Apparatus And Method For Removal Of Seed Pericarp, Jason M. Cope, Wade Yang, Billy Davidson
Patents Granted
Presents an apparatus and method for removing pericarp from a seed, such as a corn kernel. The method includes sonicating the kernel to loosen the pericarp and then separation of the pericarp. One example of separation is by frictional milling. An additional optional aspect of the invention is isolation of the pericarp from the remainder of the seed and/or further cleaning or purification of the pericarp.
Annual Financial Report, 2005-2006, University Of Arkansas, Fayetteville
Annual Financial Report, 2005-2006, University Of Arkansas, Fayetteville
Annual Financial Report
No abstract provided.
Minutes Staff Senate Meeting, November 9, 2006, University Of Arkansas, Fayetteville. Staff Senate
Minutes Staff Senate Meeting, November 9, 2006, University Of Arkansas, Fayetteville. Staff Senate
Staff Senate Meeting Minutes
No abstract provided.
The Changing Structure Of Arkansas' Economy: A Shift-Share Analysis, Biswaranjan Das, Daniel V. Rainey
The Changing Structure Of Arkansas' Economy: A Shift-Share Analysis, Biswaranjan Das, Daniel V. Rainey
Research Reports and Research Bulletins
The state of Arkansas enjoys the advantages of its unique central location in the nation, excellent natural surroundings, low cost of living, and one of the best business climates in the southern United States. It is home to several of the largest corporations in the world. Over the period 1980-2000, there was tremendous growth in the state’s economy. However, the growth was confined to specific regions that led to several socio-economic issues adversely affecting the state. To better understand the components and variations in economic growth, a county-wise shift-share analysis was conducted. Employment, a good indicator of economic growth, was …
Act 35 Report Card, Sarah C. Mckenzie, Gary W. Ritter
Act 35 Report Card, Sarah C. Mckenzie, Gary W. Ritter
Policy Briefs
The Office for Education Policy (OEP) has recently revisited Act 35 of the Arkansas General Assembly’s second extraordinary session of 2003 to highlight the Act’s provisions and assess the Arkansas Department of Education (ADE) and the State Board of Education’s progress in addressing those accountability measures. This report is part of the OEP’s continuing effort to keep our constituents informed of the extent to which reforms are being implemented in Arkansas. What follows is a description of the Act and of the report card; for the itemized and detailed complete report card, please see the table below
Blackberry Plant Named ‘Ouachita’, John R. Clark, James N. Moore
Blackberry Plant Named ‘Ouachita’, John R. Clark, James N. Moore
Patents Granted
Describes a new and distinct blackberry variety which originated from seed produced by a hand pollinated cross of Navaho (U.S. Patent PP 6,679) x Arkansas Selection 1506 (non-patented). This new blackberry variety can be distinguished by its high fruit yields, large fruit size, erect thornless canes, mid-season ripening, prolific fruiting row establishment, and good fruit quality.
Minutes Of The Faculty Senate Meeting, October 18, 2006, University Of Arkansas, Fayetteville. Faculty Senate
Minutes Of The Faculty Senate Meeting, October 18, 2006, University Of Arkansas, Fayetteville. Faculty Senate
Faculty Senate Minutes
No abstract provided.
Minutes Staff Senate Meeting, October 12, 2006, University Of Arkansas, Fayetteville. Staff Senate
Minutes Staff Senate Meeting, October 12, 2006, University Of Arkansas, Fayetteville. Staff Senate
Staff Senate Meeting Minutes
No abstract provided.
Arkansas Physics Times, October 3, 2006, Society Of Physics Students (American Institute Of Physics)
Arkansas Physics Times, October 3, 2006, Society Of Physics Students (American Institute Of Physics)
Arkansas Physics Times
No abstract provided.
Understanding Arkansas’ Education Funding Formula, Sarah C. Mckenzie, Gary W. Ritter
Understanding Arkansas’ Education Funding Formula, Sarah C. Mckenzie, Gary W. Ritter
Policy Briefs
Over the last two years, Arkansas’ education funding system has undergone a variety of changes. Despite the news coverage and public attention over education funding, there remains general confusion around the state about school spending. We have produced periodic briefs to help explain the changes; however, we believe that a straightforward question and answer style brief could be helpful in sifting through the various documents about education spending in Arkansas. Four specific questions seem to be discussed consistently regarding education funding: • How much money has been allocated for education in Arkansas? • How has education funding changed over the …
Jeanne Clery Disclosure Of Campus Security Policy And Campus Crime Statistics Report, 2005, University Of Arkansas, Fayetteville. Police Department
Jeanne Clery Disclosure Of Campus Security Policy And Campus Crime Statistics Report, 2005, University Of Arkansas, Fayetteville. Police Department
Jeanne Clery Disclosure of Campus Security Policy
No abstract provided.
Passivation Of Material Using Ultra-Fast Pulsed Laser, Tarak A. Railkar, Ajay P. Malshe, William D. Brown
Passivation Of Material Using Ultra-Fast Pulsed Laser, Tarak A. Railkar, Ajay P. Malshe, William D. Brown
Patents Granted
The surface of a semiconductor material, e.g., gallium arsenide, is passivated by irradiating the surface with ultra-short laser pulses, until a stable passive surface is achieved. The passive surface so prepared is devoid of a superficial oxide layer.
Minutes Staff Senate Meeting, September 14, 2006, University Of Arkansas, Fayetteville. Staff Senate
Minutes Staff Senate Meeting, September 14, 2006, University Of Arkansas, Fayetteville. Staff Senate
Staff Senate Meeting Minutes
No abstract provided.
Minutes Of The Faculty Senate Meeting, September 13, 2006, University Of Arkansas, Fayetteville. Faculty Senate
Minutes Of The Faculty Senate Meeting, September 13, 2006, University Of Arkansas, Fayetteville. Faculty Senate
Faculty Senate Minutes
No abstract provided.
High Quality Colloidal Nanocrystals And Methods Of Preparing The Same In Non-Coordinating Solvents, Xiaogang Peng, Weiyong Yu, David Battaglia
High Quality Colloidal Nanocrystals And Methods Of Preparing The Same In Non-Coordinating Solvents, Xiaogang Peng, Weiyong Yu, David Battaglia
Patents Granted
This invention provides substantially monodisperse colloidal nanocrystals and new preparative methods of synthesis. The methods afford the ability to tune nanocrystal size and size distribution. By using non-coordinating solvents in the synthetic process, these procedures constitute easier, less expensive, safer, and more environmentally “green” methods than those currently in use. The invention is generally applicable to any II-VI or III-V semiconductor material, and may be useful in generating metal-nonmetal compounds involving transition metals as well.
Research Frontiers, Fall 2006, University Of Arkansas Fayetteville. Office Of University Relations
Research Frontiers, Fall 2006, University Of Arkansas Fayetteville. Office Of University Relations
Research Frontiers
No abstract provided.
Partners, September 2006, Dale Bumpers College Of Agricultural, Food, And Life Sciences (University Of Arkansas, Fayetteville). Center Of Excellence For Poultry Science
Partners, September 2006, Dale Bumpers College Of Agricultural, Food, And Life Sciences (University Of Arkansas, Fayetteville). Center Of Excellence For Poultry Science
Partners
No abstract provided.
Graduate, Fall-Winter 2006, Dale Bumpers College Of Agricultural, Food, And Life Sciences (University Of Arkansas, Fayetteville)
Graduate, Fall-Winter 2006, 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."
Re:View, 2006, University Of Arkansas, Fayetteville. School Of Architecture
Re:View, 2006, University Of Arkansas, Fayetteville. School Of Architecture
Re:View
No abstract provided.
Colleague, Fall 2006, University Of Arkansas, Fayetteville. College Of Education And Health Professions, University Of Arkansas, Fayetteville. Department Of Education Reform
Colleague, Fall 2006, University Of Arkansas, Fayetteville. College Of Education And Health Professions, University Of Arkansas, Fayetteville. Department Of Education Reform
Colleague
No abstract provided.