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Cultivatingbigideas, October 2011, University Of Arkansas, Fayetteville. Technology Development Foundation
Cultivatingbigideas, October 2011, University Of Arkansas, Fayetteville. Technology Development Foundation
Cultivating Big Ideas
No abstract provided.
Mole Street Journal, July 2011, University Of Arkansas, Fayetteville. Dept. Of Chemistry And Biochemistry
Mole Street Journal, July 2011, University Of Arkansas, Fayetteville. Dept. Of Chemistry And Biochemistry
Mole Street Journal
No abstract provided.
Assessing Ageing At Beaver Reservoir, Northwest Arkansas: Limnological, Geochemical & Paleolimnological Approach, Byron Anthony Winston
Assessing Ageing At Beaver Reservoir, Northwest Arkansas: Limnological, Geochemical & Paleolimnological Approach, Byron Anthony Winston
Graduate Theses and Dissertations
Access to potable water has been arguably one of the most important requisites for the advancement of human civilization on earth. As a result, man in his infinite wisdom devised the dam and formed reservoirs, (man- made lakes), to exploit water resources at will. In all natural lakes and reservoirs changes occur in the water quality parameters as it relates to chemical nutrients, temperature and turbidity over time. These changes are collectively referred to as "Reservoir Ageing", of which sedimentation and eutrophication are primary. Reservoir Ageing has consequences which adversely affect and defeat many of the intended uses of the …
Imagery And Contamination Aversion, Thomas Grover Adams
Imagery And Contamination Aversion, Thomas Grover Adams
Graduate Theses and Dissertations
Contamination-based obsessive-compulsive disorder (OCD) is the most common form of OCD. Recent research indicates that the emotion of disgust may play a primary role in the etiology and maintenance in contamination-based OCD (CB-OCD). However, little is known about the effects of disgust on compulsive behaviors related to CB-OCD (e.g.,, hand-washing). The present study utilized an imagery-priming paradigm to test the effects of experienced disgust on compulsive hand-washing. Seventy-eight participants were selected for high or low symptoms of CB-OCD. Following response training, participants were submitted to a disgust or neutral imagery task. Following the imagery task, participants rated their subjective fear …
Ozark Highland Cunaxidae (Acari: Prostigmata): Descriptions And Keys To Genera Found To Occur In The Region And A New Phylogenetic Hypothesis For The Family, Michael Joseph Skvarla
Ozark Highland Cunaxidae (Acari: Prostigmata): Descriptions And Keys To Genera Found To Occur In The Region And A New Phylogenetic Hypothesis For The Family, Michael Joseph Skvarla
Graduate Theses and Dissertations
Fourteen genera of Cunaxidae (Acari: Prostigmata) are reported from the Ozark Highlands for the first time. Descriptions, diagnoses, and illustrated keys to genera and world species are given. Five new species are described and illustrated and an additional 6 known species are recorded from the region. The first rigorous phylogenetic hypothesis for Cunaxidae is presented. Based on morphology, it suggests the current subfamilial classification scheme does not reflect the evolutionary history of the family. Unfortunately, bootstrap values and resolution are low, suggesting the need for further indepth molecular analyses.
Mechanism Of Transcriptional Suppression Of A Phytochrome A Epiallele In Arabidopsis Thaliana, Gulab D. Rangani
Mechanism Of Transcriptional Suppression Of A Phytochrome A Epiallele In Arabidopsis Thaliana, Gulab D. Rangani
Graduate Theses and Dissertations
Cytosine methylation in DNA is an integral part of epigenetically controlled regulatory networks in eukaryotes. Both plants and vertebrates display DNA methylation in the gene coding region; however, its role in gene expression is not well understood. Gene promoter, on the other hand, remains largely unmethylated. Acquisition of methylation in promoter results in transcriptional suppression of the gene. The goal of this research is to study the effect of coding region methylation in gene expression using a unique gene model, phyA'. phyA' is a transcriptionally suppressed epiallele of the Arabidopsis thaliana Phytochrome A gene, which contains methylation in CG sites …
Stability And Sensory Properties Of Rice Bran Peptide Fraction Incorporated Orange Juice, Mirna Georges Khairallah
Stability And Sensory Properties Of Rice Bran Peptide Fraction Incorporated Orange Juice, Mirna Georges Khairallah
Graduate Theses and Dissertations
Functional foods offer consumers added benefits beyond the sole nutritional content of the food. Food companies are aggressively seeking new and cheaper sources of functional ingredients. Kannan et al. (2008) characterized anticancer peptides and peptide fraction from rice bran. However, information about their application and stability in food is lacking. In this study the stability of the peptide fraction in water at pH 7.2, at pH 3.5, and in orange juice was studied. The effect of the addition of the peptide fraction on the quality parameters of orange juice including sensory was also assessed. The results showed that the peptide …
Effects Of Lactate Dehydrogenase Haplotypes And Body Condition On Beef Cow Production, Olfat Taleb Alaamri
Effects Of Lactate Dehydrogenase Haplotypes And Body Condition On Beef Cow Production, Olfat Taleb Alaamri
Graduate Theses and Dissertations
Lactate dehydrogenase (LDH) catalyzes the conversion of the pyruvate to lactate (forward) or lactate to pyruvate (reverse) in the last step of glycolysis. Objectives were to document the effects of LDH haplotypes and its SNPs, found in the promoter and coding sequence site, and body condition on beef cow production. Four single nucleotide polymorphisms (SNP) of LDH-B and Five single nucleotide polymorphisms of LDH-A were detected. Eight haplotypes of LDH-B were assigned with the same order of SNPs: G-348A, A-261G, N-222D, and C541A and four haplotypes of LDH-A were assigned with the same order of SNPs: T-327G, D-263C, G390A, A406G, …
A Solid State Nitrogen Gas Generating Chip And Applications For Picosatellites, Kyle Godin
A Solid State Nitrogen Gas Generating Chip And Applications For Picosatellites, Kyle Godin
Graduate Theses and Dissertations
A microscale gas generating chip has many applications; in this study, applications relating to picosatellites have been considered. Cube satellites, a type of picosatellite, are of mass around one kilogram and side length 10cm x 10cm x 10cm. Their launches are becoming more numerous since their debut ten years ago. Their low cost and deployment system makes space accessible to agencies hitherto barred from it, such as universities and small governments. However, their power, mass, and volume budget is extremely tight. A microscale gas chip could compete with other designs for attitude control devices, most not flown yet as cube …
Effects Of Ergot Alkaloids And Antioxidants On Bovine Sperm Motility, Ryan James Page
Effects Of Ergot Alkaloids And Antioxidants On Bovine Sperm Motility, Ryan James Page
Graduate Theses and Dissertations
The studies that comprise this thesis were performed in an attempt to identify and eliminate stressful conditions that may lead to infertility in the male bovine. The first project was performed to determine if ergot alkaloids directly affect bovine sperm motility. Percentage of motile spermatozoa was affected (P = 0.015) by a three-way interactions between time, concentration, and alkaloid. Ergotamine and dihydroergotamine decreased (P = 0.01) sperm motility in a concentration and time dependant manner and ergonovine had a minimal effect on overall sperm motility. The number of static spermatozoa also was affected (P < 0.01) by a three way interaction and increased as ET and DHET concentrations increased. Percentages of progressively motile and rapidly motile spermatozoa decreased (P < 0.01) in a two way interaction between alkaloid and concentration. Overall, sperm motility was decreased by ET and DHET. Furthermore, the qualities of motility as represented by progressive, rapid, path velocity (VAP), progressive velocity (VSL), track speed (VCL), beat frequency (BCF), lateral amplitude (ALH), straightness (STR), elongated, and area were decreased by those alkaloids. These data verify that ergot alkaloids commonly found in toxic tall fescue are detrimental to bovine spermatozoa. In the second study two antioxidants (alpha-tocopherol and ascorbic acid) were added to bovine sperm culture media and cryopreservation extender. The antioxidant capabilities of these two vitamins could help reduce free radical production and help preserve sperm viability. There was an interactive effect between ascorbic acid concentration and storage method on the bovine sperm motility characteristics: motile, progressive, rapid, track speed (VCL), and straightness (P < 0.05). A bull by ascorbic acid interaction (P < 0.05) was observed for motile, progressive, rapid, path velocity (VAP), progressive velocity (VSL), and VCL characteristics. Alpha tocopherol had no affects on sperm motility characteristics. Lipid peroxidation was affected (P < 0.01) by bull and ascorbic acid. Malondialdehyde concentrations for ascorbic acid treatments (0, 5, 10, 20 mM) were 3.25, 4.2, 2.96, and 2.15 ìM respectively. Results from the second study indicate that the addition of ascorbic acid may reduce sperm motility, but help prevent lipid peroxidation.
Effects Of Osteopontin Single Nucleotide Polymorphisms On Bull Semen Quality, Chance L. Williams
Effects Of Osteopontin Single Nucleotide Polymorphisms On Bull Semen Quality, Chance L. Williams
Graduate Theses and Dissertations
Two groups of bulls were utilized to evaluate if single nucleotide polymorphisms (SNP) in the Bos taurus OPN gene (GenBank accession # AY878328.1) promoter region were related to bull semen quality variables as evaluated by computer assisted semen analysis (CASA). Group 1 consisted of 19 Angus and Balancer bulls, ranging in age from 5 to 8 years, which were collected weekly during a 2-month period (July 15, 2010 through September 19, 2010). Group 2 consisted of 16 Brahman influenced (1/8 to 3/16 Brahman) bulls, mean age = 1.1 ± 0.1 year, that were collected monthly for a 7 month period …
Changing Dairy Market Environment: Effect On Cooperative Organization, Competition, And Price Risk Management: Comparative Analysis Between Germany And The United States, Pieter Vermeersch
Changing Dairy Market Environment: Effect On Cooperative Organization, Competition, And Price Risk Management: Comparative Analysis Between Germany And The United States, Pieter Vermeersch
Graduate Theses and Dissertations
The dairy market environment in the United States of America and in Europe is changing partially due to a change in policies supporting free markets. The effect of the change in the dairy market environment in the United States and Germany on cooperative organization, competition, and price risk management is elaborated in this thesis by means of a literature survey including governmental documents, industry documents, and published scientific articles. The thesis provides a closer look to the interaction between two players within the dairy market chain, i.e. the farmers and the processors. Both players are confronted with increasing accessibility of …
Purchaser Preferences On Carbon Labels: Conventional Vs. Organic Milk, Mustafa Ozkan
Purchaser Preferences On Carbon Labels: Conventional Vs. Organic Milk, Mustafa Ozkan
Graduate Theses and Dissertations
Over the past several years, there has been growing attention concerning global warming/climate change and how humans are contributors. It is known that agricultural production is a main contributor of greenhouse gas emissions and the livestock sector is particularly significant because it is quoted as having between 3 and 18% of greenhouse gas emissions measured in CO2 equivalent pending different assumptions. Due to this, carbon footprint labeling has been described as a potential tool to inform consumers about greenhouse gases associated with food products and assist them with the necessary information to purchase products that help reduce greenhouse gas emissions. …
B. R. Wells Rice Research Studies 2010, R. J. Norman, K. A. K. Moldenhauer
B. R. Wells Rice Research Studies 2010, R. J. Norman, K. A. K. Moldenhauer
Arkansas Agricultural Experiment Station Research Series
The 2010 Rice Research Verification Program ( RRVP) was conducted on twenty-two commercial rice fields across the state. Counties rarticirating in the program included Arkansas, Ashley, Chicot, Clark, Clay, Cross, Desha, Drew, Greene, Jackson, Jefferson, Lafayette, Lawrence, Lonoke, Mississippi, Phillips, Poinsett (2 fields), Prairie, Randolph, St. Francis, and White for a total of 1456 acres. Grain yield in the 2010 RRVP averaged 167 bu/acre ranging from 113 to 215 bu/acre. The 2010 RRVP average yield was 25 bu/acre greater than the estimated Arkansas state average of 142 bu/acre. The highest yielding field was in Clay County with a grain yield …
Faculty Publications & Presentations, 2010-2011, University Of Arkansas, Fayetteville
Faculty Publications & Presentations, 2010-2011, University Of Arkansas, Fayetteville
Faculty Publications and Presentations
No abstract provided.
Annual Report, 2010-2011, University Of Arkansas, Fayetteville. Office Of The Vice Provost For Research And Economic Development
Annual Report, 2010-2011, University Of Arkansas, Fayetteville. Office Of The Vice Provost For Research And Economic Development
Research and Innovation Annual Report
No abstract provided.
Annual Report, 2010-2011, University Of Arkansas, Fayetteville. Graduate School And International Education
Annual Report, 2010-2011, University Of Arkansas, Fayetteville. Graduate School And International Education
Graduate School and International Education Annual Report
No abstract provided.
Go! Green Outreach, Summer 2011, University Of Arkansas, Fayetteville. Division Of University Advancement
Go! Green Outreach, Summer 2011, University Of Arkansas, Fayetteville. Division Of University Advancement
Go! Green Outreach
"Sharing sustainability news, efforts, and ideas with the people of campus" --cover image
Center For Food Safety, Summer 2011, University Of Arkansas (System). Division Of Agriculture. Center For Food Safety
Center For Food Safety, Summer 2011, University Of Arkansas (System). Division Of Agriculture. Center For Food Safety
Center for Food Safety
No abstract provided.
Mole Street Journal, May 2011, University Of Arkansas, Fayetteville. Dept. Of Chemistry And Biochemistry
Mole Street Journal, May 2011, University Of Arkansas, Fayetteville. Dept. Of Chemistry And Biochemistry
Mole Street Journal
No abstract provided.
Minutes Of The Faculty Senate Meeting, May 11, 2011, University Of Arkansas, Fayetteville. Faculty Senate
Minutes Of The Faculty Senate Meeting, May 11, 2011, University Of Arkansas, Fayetteville. Faculty Senate
Faculty Senate Minutes
No abstract provided.
Method For Detecting An Unknown Contaminant Concentration In A Substance, Yanbin Li, Xiao-Li Su
Method For Detecting An Unknown Contaminant Concentration In A Substance, Yanbin Li, Xiao-Li Su
Patents Granted
A method for determining a concentration of a contaminant in a first sample is described. The method includes producing the first sample, adding a plurality of immuno-beads to a test substance; exposing a crystal microbalance immunosensor to the first sample; determining a change in a first motional resistance of the crystal microbalance immunosensor following exposure to the first sample (Delta R1); and determining the concentration of the contaminant in the first sample according to Delta R1.
2011 Report Card On Arkansas Public Schools, Gary Ritter
2011 Report Card On Arkansas Public Schools, Gary Ritter
Education Report Card
The OEP is pleased to bring you its 2011 Report Card for Arkansas’ public schools highlighting Arkansas’ education performance and characteristics through the 2010-2011 academic year. We hope this report is accessible and informative for educators and policymakers in the state. The charts and figures here are a reflection of the progress we have made as a state in the last decade. They also serve as a reminder that we still need improvement and reform to continue that progress.
Arkansas Physics Times, May 2011, Society Of Physics Students (American Institute Of Physics)
Arkansas Physics Times, May 2011, Society Of Physics Students (American Institute Of Physics)
Arkansas Physics Times
No abstract provided.
Faculty Impact Statements, 2010, Arkansas Agricultural Experiment Station
Faculty Impact Statements, 2010, Arkansas Agricultural Experiment Station
Agricultural Experiment Station Records
Each issue [in the Research Series] has a distinctive title
Mole Street Journal, April 2011, University Of Arkansas, Fayetteville. Dept. Of Chemistry And Biochemistry
Mole Street Journal, April 2011, University Of Arkansas, Fayetteville. Dept. Of Chemistry And Biochemistry
Mole Street Journal
No abstract provided.
Water Purification For Rural Communities Using Ultraviolet Light And Bleach Systems, Ryan Lee
Water Purification For Rural Communities Using Ultraviolet Light And Bleach Systems, Ryan Lee
Chemical Engineering Undergraduate Honors Theses
Many technologies are used for water disinfection. Chlorine, iodine, and ozone are some chemical methods of water disinfection. Filtration, including microfiltration, ultrafiltration, and reverse osmosis, is used to remove bacteria. In addition to chemical and filtration technologies, one can disinfect water using UV irradiation, ultrasonic treatment, electrolysis, solar disinfection, and slow sand filtration.
Currently, there are few solutions being employed in third world settings for communities. The current solutions are either for one household or are part of an existing infrastructure and therefore are not portable. Slow sand filtration is used successfully to provide potable water for individual households. Tablet …
Clean Energy Water Disinfection International Environmental Education Design Contest, Howard Heffington
Clean Energy Water Disinfection International Environmental Education Design Contest, Howard Heffington
Chemical Engineering Undergraduate Honors Theses
Many technologies are used for water disinfection. Chlorine, iodine, and ozone are some chemical methods of water disinfection. Filtration, including microfiltration, ultrafiltration, and reverse osmosis, is used to remove bacteria. In addition to chemical and filtration technologies, one can disinfect water using UV irradiation, ultrasonic treatment, electrolysis, solar disinfection, and slow sand filtration.
Currently, there are few solutions being employed in third world settings for communities. The current solutions are either for one household or are part of an existing infrastructure and therefore are not portable. Slow sand filtration is used successfully to provide potable water for individual households. Tablet …
Integration Of Ce-Sscp In Genetic Analysis: Fabrication And Optimization Of The Polymer Matrix, Hannah Lintag
Integration Of Ce-Sscp In Genetic Analysis: Fabrication And Optimization Of The Polymer Matrix, Hannah Lintag
Chemical Engineering Undergraduate Honors Theses
Genetic analysis has become an essential aspect in the field of biological research. Genetic material contains an abundance of information that can be harnessed, from the pathological study of diseases to the identification of algal species used for alternative fuel. The detection of genetic species and/or their mutated counterparts is an approach that still warrants improvement, however. Capillary electrophoresis-single strand conformation polymorphism (CE-SSCP) offers a rapid and highly-reproducible means to detect alterations in genetic material. In this project, its implementation in the field of genetic studies as a way to detect mutations in hereditary diseases and identifying species via genetic …
Biodiesel Production From Waste Algae Through Supercritical Methanol And Solid Catalysts, Alexander Lopez
Biodiesel Production From Waste Algae Through Supercritical Methanol And Solid Catalysts, Alexander Lopez
Chemical Engineering Undergraduate Honors Theses
The need for alternate fuels continues to rise as fossil fuel reserves decline, and the effects of harmful fuel emissions on the environment begin to take its toll. One alternate fuel that has great potential is biodiesel. Biodiesel is a non-petroleum based fuel composed of alkyl esters from feedstocks. Using biodiesel as an alternate fuel source has a variety of advantages over traditional petroleum diesel, including producing no SOx emissions and low COx emissions. Another important advantage of biodiesel is that it can be produced from a wide variety of feedstocks. Biodiesel processes using waste cooking oil, animal fats, and …