Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

University of Arkansas, Fayetteville

Discipline
Keyword
Publication Year
Publication
Publication Type

Articles 3691 - 3720 of 5626

Full-Text Articles in Entire DC Network

Study Of Thermotolerance Mechanism In Gossypium Hirsutum Through Identification Of Heat Stress Genes, Jin Zhang Aug 2013

Study Of Thermotolerance Mechanism In Gossypium Hirsutum Through Identification Of Heat Stress Genes, Jin Zhang

Graduate Theses and Dissertations

ABSTRACT

Heat stress causes major losses to cotton seed and lint yield. Introduction of heat stress tolerance to Arkansas cotton varieties is highly desirable. However, very little is known about the molecular basis of heat stress tolerance in cotton. The present study attempted to identify heat stress tolerance genes in two heat-tolerant cotton cultivars, VH260 and MNH456, originating from Pakistan. Towards this, the expression profile of the cotton orthologs of sevenArabidopsisheat stress tolerance genes was studied in these two cultivars, and compared with the two heat-susceptible cotton cultivars, ST213 and ST4288, originating from Mississippi Delta region. In addition, physiological parameters …


Evaluation Of Water Sanitation Options For Poultry Production, Pramir Maharjan Aug 2013

Evaluation Of Water Sanitation Options For Poultry Production, Pramir Maharjan

Graduate Theses and Dissertations

An evaluation of poultry farm water supplies was conducted to determine the value and impact of water system sanitation practices in commercial broiler houses on microbial levels. Water line cleaning between flocks using concentrated disinfectant solution before placing chicks reduced biofilms retained in the lines to a safe level. Occasional microbial surges were noticed during different points of flock grow-out period even when daily water sanitation was present indicating water is highly susceptible to microbial contamination. However, the daily water sanitation practice controlled the occasional microbial surges in water from sustaining and kept drinking water to a microbiologically acceptable level. …


Comparison Of Potential Salmonella Portals Of Entry And Tissue Distribution Following Challenge Of Poultry, Gopala Krishna Kallapura Sheshagiri Aug 2013

Comparison Of Potential Salmonella Portals Of Entry And Tissue Distribution Following Challenge Of Poultry, Gopala Krishna Kallapura Sheshagiri

Graduate Theses and Dissertations

The following studies evaluated our hypothesis that transmission by the fecal-respiratory route may be a viable portal of entry for Salmonella and could explain some clinical impressions of relatively low-dose infectivity under field conditions in relation to the requisite high oral challenge dose that is typically required for infection of poultry through the oral route in laboratory studies. Initial field reports indicating tracheal sampling to be a sensitive tool for monitoring Salmonella infection in commercial flocks, suggested that tracheal contamination could be a good indicator of Salmonella infection under commercial conditions. Further, a usual assumption regarding airborne Salmonella reaching the …


Computer Access, Teacher Skills And Motivation To Take Online Professional Development In The Riyadh School District, Haya Mohammad Albrkhil Aug 2013

Computer Access, Teacher Skills And Motivation To Take Online Professional Development In The Riyadh School District, Haya Mohammad Albrkhil

Graduate Theses and Dissertations

Eight hundred Saudi Arabia educators from the Riyadh District participated in this study to determine teachers' access to computers, computer skill level and motivation to enroll in online courses pertaining to professional development. Participants, who were chosen according to a stratified sampling technique, completed a survey which provided the data for the study.

The correlation between the motivation to take online courses and the computer skill perception of participants was weak but statistically significant indicating that as the rate of computer skills perception increases, the rate of motivation to take online classes increases as well. Other factors pertaining to increased …


Arkansas Catalyst, July 2013, University Of Arkansas, Fayetteville Jul 2013

Arkansas Catalyst, July 2013, University Of Arkansas, Fayetteville

Arkansas Catalyst

No abstract provided.


Partners, July 2013, Dale Bumpers College Of Agricultural, Food, And Life Sciences (University Of Arkansas, Fayetteville). Center Of Excellence For Poultry Science Jul 2013

Partners, July 2013, Dale Bumpers College Of Agricultural, Food, And Life Sciences (University Of Arkansas, Fayetteville). Center Of Excellence For Poultry Science

Partners

No abstract provided.


Animal Science E-Newsletter, July 2013, University Of Arkansas, Fayetteville. Department Of Animal Sciences Jul 2013

Animal Science E-Newsletter, July 2013, University Of Arkansas, Fayetteville. Department Of Animal Sciences

Animal Science e-Newsletter

No abstract provided.


Annual Financial Report Supporting Schedules, 2012-2013, University Of Arkansas, Fayetteville Jun 2013

Annual Financial Report Supporting Schedules, 2012-2013, University Of Arkansas, Fayetteville

Annual Financial Report

No abstract provided.


Annual Report, 2012-2013, University Of Arkansas, Fayetteville. Office Of The Vice Provost For Research And Economic Development Jun 2013

Annual Report, 2012-2013, University Of Arkansas, Fayetteville. Office Of The Vice Provost For Research And Economic Development

Research and Innovation Annual Report

No abstract provided.


Mole Street Journal, May 2013, University Of Arkansas, Fayetteville. Dept. Of Chemistry And Biochemistry Jun 2013

Mole Street Journal, May 2013, University Of Arkansas, Fayetteville. Dept. Of Chemistry And Biochemistry

Mole Street Journal

No abstract provided.


Arkansas Catalyst, June 2013, University Of Arkansas, Fayetteville Jun 2013

Arkansas Catalyst, June 2013, University Of Arkansas, Fayetteville

Arkansas Catalyst

No abstract provided.


Animal Science E-Newsletter, June 2013, University Of Arkansas, Fayetteville. Department Of Animal Sciences Jun 2013

Animal Science E-Newsletter, June 2013, University Of Arkansas, Fayetteville. Department Of Animal Sciences

Animal Science e-Newsletter

No abstract provided.


Annual Report Of The Wally Cordes Teaching And Faculty Support Center For The Year Ended…, 2013, University Of Arkansas, Fayetteville. Wally Cordes Teaching And Faculty Support Center Jun 2013

Annual Report Of The Wally Cordes Teaching And Faculty Support Center For The Year Ended…, 2013, University Of Arkansas, Fayetteville. Wally Cordes Teaching And Faculty Support Center

Wally Cordes Teaching and Faculty Support Center Annual Report

No abstract provided.


Concert Recording 2013-05-29, Patrick Bellah, Catalina Barraza, Andrew Chu, Baron Lyle, Andrew Thompson May 2013

Concert Recording 2013-05-29, Patrick Bellah, Catalina Barraza, Andrew Chu, Baron Lyle, Andrew Thompson

Concert Recordings & Programs

[00:00]. String quartet no. 14 in D minor D. 810. Allegro ; Andante ; Scherzo ; Presto / Franz Schubert -- [32:28]. String quartet in G minor op. 10. Anime et tres decide ; Assez vif et bien rythme ; Andantino, doucement expressif ; Tres modere, En animant peu a peu, Tres mouvemente et avec passion / Claude Debussy.


Over-Imitation In Four-To-Six-Year-Old Children With Autism And Typically Developing Children, Tamara Henschell May 2013

Over-Imitation In Four-To-Six-Year-Old Children With Autism And Typically Developing Children, Tamara Henschell

Rehabilitation, Human Resources and Communication Disorders Undergraduate Honors Theses

This study is a follow-up based on research conducted by Horner and Whiten in 2005. Nearly identical methods and materials from that study were used to compare the over-imitation behaviors of preschool children with autism to age-matched typically developing (TD) children. Contrary to the hypothesis, the children with autism were found to over-imitate at the same rates as the TD group. However, several limitations were found in this study that may have influenced the results, including small sample size, test location, and previous training. Keywords: autism spectrum disorders, imitation, over-imitation, emulation


Efficacies Of Fenbendazole And Albendazole In The Treatment Of Commercial Turkeys Artificially Infected With Ascaridiadissimilis, Jessica Perkins May 2013

Efficacies Of Fenbendazole And Albendazole In The Treatment Of Commercial Turkeys Artificially Infected With Ascaridiadissimilis, Jessica Perkins

Animal Science Undergraduate Honors Theses

The goal of this research was to determine the extent of anthelmintic resistance that turkey roundworms, Ascaridiadissimilis, have developed to anti-parasitic chemicals used in commercial turkey operations. Roundworm infections in turkeys have resulted in monetary losses for the poultry industry for years, generally due to poor feed conversion. The infection itself is generally subclinical and many turkeys have a light to moderate worm burden. Since parasitisms are light, this leads to the infections being noticed only during processing.A. dissimilis infections consist of adult worms and developing larvae with the latter comprising most of the worm burden and causing the most …


Biodiesel Transesterification Byproducts As Soil Amendments, Solomon Parker May 2013

Biodiesel Transesterification Byproducts As Soil Amendments, Solomon Parker

Graduate Theses and Dissertations

For every ten kilograms of biodiesel that is produced from the transesterification of vegetable oil, approximately 1 kg of glycerol is produced as a byproduct. Also known as glycerin, it is a chemical used in many products including cosmetics, foods, and desiccants. However, the crude glycerol created during biodiesel production is tainted with potassium hydroxide and methanol making it unsuitable for commercial use without costly refinement. With increase in production of biodiesel driven by rising fuel prices, the market has become glutted with glycerol and it is on the threshold of becoming a waste product. Common methods for disposing glycerol …


Modeling Greenhouse Gas Emissions And Net Return Implications For Cow-Calf Producers In The Ozark Highlands, Stephen Aaron Smith May 2013

Modeling Greenhouse Gas Emissions And Net Return Implications For Cow-Calf Producers In The Ozark Highlands, Stephen Aaron Smith

Graduate Theses and Dissertations

Cow-calf producers in the Ozark Highlands region are under continuous pressure to improve economic efficiency. Additionally, estimating greenhouse gas (GHG) emissions from cow-calf and forage production processes may become increasingly important as policy makers seek to mitigate or reduce agriculture's role in climate change. As such, this analysis had three objectives. Objective 1: Provide a model that could be used by cow-calf producers, extension agents, and researchers to evaluate GHG and net return (NR) repercussions when modifying site characteristics, production methods, and inputs. Objective 2: Develop a user guide such that the methodology for estimating cow-calf GHG emissions and NR …


Toile, Dilenia Garcia May 2013

Toile, Dilenia Garcia

Graduate Theses and Dissertations

Toile is a painting series that explores constructions of taste and the semiotics of manufactured fabrics. Through the use of irony, paradox and deconstructions of rhythm, shape, color and form, the paintings are a response to the formal and historical content in the fabric. The idyllic landscape, notions of identity, sexism and liminality are some of the themes considered in the series. The paintings in this exhibition attempt to correct and mediate outdated models of representation through the exploration of painting as a process that is open and malleable.


In Vivo Efficacy Of Chitosan/Interleukin-12 In Controlling Lung Metastasis In 4t1 Breast Cancer Model, Jimmy Vo May 2013

In Vivo Efficacy Of Chitosan/Interleukin-12 In Controlling Lung Metastasis In 4t1 Breast Cancer Model, Jimmy Vo

Biomedical Engineering Undergraduate Honors Theses

Cancer immunotherapy has emerged as a leading front in cancer treatment. In contrast to other treatment methods such as radiation and surgery, immunotherapy trains the patient's body to recognize and eliminate tumors, thus preventing reoccurrence of secondary tumors. IL-12 has been shown to display a potent anti-tumor immune response in mice; however, when clinical trials were conducted, it was shown to be toxic and in some cases fatal when administered systemically.1,2 Because of this, local delivery of IL-12 is under investigation. Our lab has shown that when paired with the polymer chitosan, local, intratumoral (i.t.) injections of IL-12 are retained …


Hair Shedding Scores Relating To Maternal Traits And Productivity In Beef Cattle, Ashton Williams May 2013

Hair Shedding Scores Relating To Maternal Traits And Productivity In Beef Cattle, Ashton Williams

Animal Science Undergraduate Honors Theses

The objectives of this study were to measure how quickly cattle shed their winter coat in the sub-tropical climate of Arkansas. As well as, to understand the role age may play on cattle shedding efficiency in spring and summer months, in conjunction with the relationship between mother hair coat and calf sex. Angus based commercial beef cattle (n = 224) were observed over a five-month period in 2012. Once monthly, at approximately 28-day intervals, cattle were evaluated for shedding on a scale from 1 to 5. A score of 5 indicated the cow/heifer had a full winter coat and a …


The Church Of San Francisco In Mexico City As Lieux De Memoire, Laurence Mcmahon May 2013

The Church Of San Francisco In Mexico City As Lieux De Memoire, Laurence Mcmahon

Architecture Undergraduate Honors Theses

San Francisco, memory, lieux de memoire


Short-Term Denitrification In The Metalimnion Of A Eutrophic Reservoir, Aki Kogo May 2013

Short-Term Denitrification In The Metalimnion Of A Eutrophic Reservoir, Aki Kogo

Crop, Soil and Environmental Sciences Undergraduate Honors Theses

Denitrification in metalimnetic water was examined under different conditions to determine how of addition of nitrate (NO3-) and particulate carbon (PC), aeration, and concentrations of nitrate affect denitrification. In the first experiment, water samples from a metalimnion were treated with different combinations of NO3- and PC to find out how addition of NO3- and PC changes denitrification occurring in a metalimnion. The treatments included 1) control, 2) samples amended with 1 mg NO3− - N/L, 3) samples amended with both NO3− (1 mg NO3− - N/L) and PC (5.7 mg C/L), and 4) samples amended with 5.7 mg C/L. Changes …


The Adair Site: Ouachita River Valley Relations Through Ceramic Analysis, Joanne Demaio May 2013

The Adair Site: Ouachita River Valley Relations Through Ceramic Analysis, Joanne Demaio

Graduate Theses and Dissertations

The Adair site (3GA1), located in the Upper Ouachita River Valley in Garland CO, Arkansas is an Upper Ouachita Caddo site. The people at the site are presumed to be at the center of cultural dominance for the area and had interaction with Caddo sites in the region. This thesis explores this by studying the whole vessel collections that were excavated at the Adair site in the 1930s. Comparing the Adair collection to three other Caddo sites provides information about the Social standing of the Adair site, its relations with other sites, and how it fits into the greater fabric …


Foodways, Families, And Festivities: Ethnobiology And Cultural Conservation In A Rural Missouri Community, Ian Carter Smith May 2013

Foodways, Families, And Festivities: Ethnobiology And Cultural Conservation In A Rural Missouri Community, Ian Carter Smith

Graduate Theses and Dissertations

Food customs and traditions bind human groups together in many ways--Socially, geographically, temporally, and emotionally. This thesis describes the intricate relationships between food, ritual, and cultural identity in a rural German-Catholic community in Missouri. By drawing on the anthropological, cultural geographical and folkloric literature surrounding rural Missouri, a portrait of foodways emerges, which in turn illuminates valuable, often understated regional cultural traditions. Religion and ritual are understood as crucial to the continuity of regional identity--it is reinforced and made resilient through shared Social action. The dispersal of ritual feasts and fasts throughout the calendar year regulates collective behavior, interactions, conversations, …


Geophysical Surveys And Archaeological Insights At Fort Pierre Chouteau A Frontier Trading Post On The Middle Missouri, Margaret Maurine Patton May 2013

Geophysical Surveys And Archaeological Insights At Fort Pierre Chouteau A Frontier Trading Post On The Middle Missouri, Margaret Maurine Patton

Graduate Theses and Dissertations

Fort Pierre Chouteau in present day South Dakota was the most important fur trading post of the American Fur Company in the 1830s, serving as a regional hub for the fur trade. The Fort was sold to the U.S. Military in 1855 for use as a base in the Sioux Wars but was abandoned in 1856. Geophysical surveys and previous excavations indicate evidence of both occupations. Geophysics is an important tool for determining the extent of archaeological sites, yet the relationships between geophysical anomalies and excavation features may not be readily evident. Initial geophysical surveys (Kvamme 2007) were completed to …


Missionaries In Latin America: A Study On Short-Term Missionaries And The People They Help, Katharine Serio May 2013

Missionaries In Latin America: A Study On Short-Term Missionaries And The People They Help, Katharine Serio

Graduate Theses and Dissertations

The last few years have seen the emergence of growing anthropological interest in short-term mission work, examining the phenomenon though a variety of denominations and mission locations around the world and analyzing the representations and experiences of both the host communities and mission teams traveling to them. This thesis explores how United Methodist short-term mission participants attempt to embody an ideal "mission self" while doing missionary work and the role that narratives about the experience at home played in this. I examine the ways in which members of a Louisiana based UMC team on a medical mission conceptualized their trip …


Physiological Effects Of Low Mowing Heights, Rolling, And Foot Traffic On Creeping Bentgrass Putting Greens, Joseph Ronald Young May 2013

Physiological Effects Of Low Mowing Heights, Rolling, And Foot Traffic On Creeping Bentgrass Putting Greens, Joseph Ronald Young

Graduate Theses and Dissertations

Golf course superintendents are managing creeping bentgrass (Agrostis stolonifera L.) putting greens throughout the transition zone where temperatures can exceed optimum levels for consecutive days in the summer. The stress of creeping bentgrass associated with these supraoptimal temperatures has been well documented, but the management practices implemented on putting greens to increase green speeds may exacerbate these environmental stresses. To date, the physiological effects of these management practices in combination have not been evaluated for putting green turf. The objective of this dissertation project was to determine the effect of mowing heights, light-weight rolling, and foot traffic on performance and …


Ccaat-Binding Factor As A Transcriptional Regulator Of Cyc1 In Candida Albicans, Carmen S. Padilla-Marcia May 2013

Ccaat-Binding Factor As A Transcriptional Regulator Of Cyc1 In Candida Albicans, Carmen S. Padilla-Marcia

Graduate Theses and Dissertations

Candida albicans is a normal commensal of the human flora; however, under appropriate circumstances this organism can become pathogenic to the host and cause life threatening conditions. In fact, Candida species are the fourth most common nosocomial infection in the Unites States with a mortality rate of over 30%

The CCAAT binding factor is a multi-protein transcription factor highly conserved in eukaryotes. It binds specifically to the consensus sequence 5'-CCAAT-3' in promoters and it is one of the most common cisacting elements in eukaryotes promoters. This transcription factor is composed of three DNA binding subunits; Hap2p, Hap3p and Hap5. In …


An Investigation Of The Electronic Coupling In Some Dimeric Ruthenium (Ii) Polypyridine Complexes, Roland Ngebichie Njabon May 2013

An Investigation Of The Electronic Coupling In Some Dimeric Ruthenium (Ii) Polypyridine Complexes, Roland Ngebichie Njabon

Graduate Theses and Dissertations

A detailed understanding of respiration at the molecular level requires an understanding of the many electron transfer steps involved in the process. These electron transfer processes are extremely fast and are impossible to measure by simple rapid mixing techniques. In order to get around this problem, scientists have used laser flash photolysis. This technique relies on the fact that under proper conditions, a reactant can be generated by a very short laser pulse. Once generated, the course of the reaction can be monitored by various techniques capable of very rapid time response. Many applications of this methodology rely on the …