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Articles 2851 - 2880 of 7198
Full-Text Articles in Entire DC Network
The Effects Of A Literacy-Based Mentoring Program On Empowering Preadolescent Girls In Their Development Of Confidence, Self-Concept, And Leadership Skillset, Sophia Vincent
Curriculum and Instruction Undergraduate Honors Theses
This study focuses on empowering preadolescent girls to develop confidence and move from a fixed to growth mindset, take responsibility for their actions, turn failures into learning opportunities, and cultivate a love for self. GIRLS: Leaders on the Rise is a literacy-based mentoring program for preadolescent girls designed to improve confidence, positive self-concept, and develop a leadership skillset through five targeted aspects of leadership: growth mindset, integrity, resilience, love and loyalty, and strengths. Adolescence is a time when students are discovering who they are and shaping their identities. Girls decline in their self-confidence during adolescence due to fear of failure, …
Heat-Shock-Inducible Crispr/Cas9 System Generates Heritable Mutations In Rice, Soumen Nandy, Bhuvan Pathak, Shan Zhao, Vibha Srivastava
Heat-Shock-Inducible Crispr/Cas9 System Generates Heritable Mutations In Rice, Soumen Nandy, Bhuvan Pathak, Shan Zhao, Vibha Srivastava
Crop, Soil and Environmental Sciences Faculty Publications and Presentations
Transient expression of CRISPR/Cas9 is an effective approach for limiting its activities and improving its precision in genome editing. Here, we describe the heat-shock-inducible CRISPR/Cas9 for controlled genome editing, and demonstrate its efficiency in the model crop, rice. Using the soybean heat-shock protein gene promoter and the rice U3 promoter to express Cas9 and sgRNA, respectively, we developed the heat-shock (HS)-inducible CRISPR/Cas9 system, and tested its efficacy in targeted mutagenesis. Two loci were targeted in rice, and the presence of targeted mutations was determined before and after the HS treatment. Only a low rate of targeted mutagenesis was detected before …
Evaluating Rice Straw As A Substitute For Barley Straw In Inhibiting Algal Growth In Farm Ponds, Jacob Maris
Evaluating Rice Straw As A Substitute For Barley Straw In Inhibiting Algal Growth In Farm Ponds, Jacob Maris
Crop, Soil and Environmental Sciences Undergraduate Honors Theses
Algal blooms disrupt aquatic ecosystems and are more common in lakes, ponds, and rivers during the summer months due to nutrient pollution. Livestock production can contribute increased quantities of nutrients to water bodies from runoff of manure. Commonly used mechanical and chemical control methods may have limited success because algae are small and propagate quickly. Barley (Hordeum vulgare) straw has been shown to inhibit the growth of algae as the straw decomposes aerobically in ponds. Therefore, barley represents a natural option for algal biomass control. However, the small amount of barley production in Arkansas limits the availability of …
Determining The Relationship Among Cattle Genotype, Hair Coat Score, And Productivity Through The Investigation Of Single Nucleotide Polymorphisms Within Prolactin, Dopamine Receptor D2, And Melatonin Receptor 1a, Erin Davis
Animal Science Undergraduate Honors Theses
Prolactin (PRL), melatonin (MTN), and dopamine (DA) are all hormones that are believed to play a role in the regulation and growth of hair in beef cattle. There are also single nucleotide polymorphisms associated with each of these hormones or their receptors, indicating that the investigation of these polymorphisms could allow them to serve as genetic markers for the future productivity of an animal. The objective of this study was to determine the relationships among cattle genotype, hair coat score, and productivity through the investigation of single nucleotide polymorphisms within prolactin, dopamine receptor D2, and melatonin receptor 1A. Body weights, …
The Diversity Of Terrestrial Mammals Surrounding Waterfall At Billy Barquedier National Park, Kelsey Johnson
The Diversity Of Terrestrial Mammals Surrounding Waterfall At Billy Barquedier National Park, Kelsey Johnson
Animal Science Undergraduate Honors Theses
Billy Barquedier is a National Park located in the Stann Creek district of Belize that contains Neotropical vegetation and wildlife. This study was performed in order to provide a baseline inventory and appearance frequency patterns of the terrestrial mammals located within Zone 1 of the park near a waterfall. The goal of the data and information collected during this study is to gain a greater understanding of the biodiversity and activity patterns of terrestrial mammals within the park and across Belize as a whole. The use of camera traps, small Sherman live traps, large live traps, and tracking methods were …
To Be Thus Is Nothing, But To Be Safely Thus: Applying The Michael Chekhov Technique To The Character And Fight Direction Of "Macbeth", Scott Nicholas Russell
To Be Thus Is Nothing, But To Be Safely Thus: Applying The Michael Chekhov Technique To The Character And Fight Direction Of "Macbeth", Scott Nicholas Russell
Graduate Theses and Dissertations
This thesis is an exploration of the Michael Chekhov technique as it was applied to the role of Macbeth, as well as the Fight Direction of the play. This production of Macbeth ran from February 1, 2019 to February 10, 2019 at the Global Campus Theatre at the University of Arkansas in downtown Fayetteville; this thesis includes documentation of the show. Additionally, this thesis includes documentation on my self-created one-person show, Forte and Foible, my headshot and resume, and link to my website.
Evaluation Of Herd Size Management Strategies, Colson A. Tester
Evaluation Of Herd Size Management Strategies, Colson A. Tester
Graduate Theses and Dissertations
This thesis is comprised of two studies examining the effects of price signal based herd size management strategies on profitability of cow-calf operations. Herd size management strategies were evaluated across the previous two cattle cycles, 1990-2014, using a fixed land resource and included a variety of production scenarios. These scenarios varied in terms of stocking rates, fertilizer applications rates, and calving season. Each scenario was also analyzed both with and without weather effects on forage production. Weather effects were simulated using a production index derived from satellite imagery across the observed 25-year period. Three herd size management strategies: i) constant …
Disease And De Soto: A Bioarchaeological Approach To The Introduction Of Malaria To The Southeast Us, Kelly Marie Schaeffer
Disease And De Soto: A Bioarchaeological Approach To The Introduction Of Malaria To The Southeast Us, Kelly Marie Schaeffer
Graduate Theses and Dissertations
It is well known through documentation in historical accounts that numerous diseases were introduced to the Americas during the time of Spanish and French exploration. Diseases such as smallpox, measles and yellow fever have been credited in playing a role in the Spanish conquest of the New World through drastic Native American population decline. Many researchers have studied the biological consequences of European contact, some using direct skeletal analyses to study changes in Native American health and disease. However, one major population disease that has not been part of these discussions is malaria. This is mostly due to the current …
Privileged Eyes: How A Look In The Mirror Informed The Creation Of Marilyn And Desiree, Halley Electra Mayo
Privileged Eyes: How A Look In The Mirror Informed The Creation Of Marilyn And Desiree, Halley Electra Mayo
Graduate Theses and Dissertations
This thesis is for the performance of Desiree in A Little Night Music, by Stephen Sondheim and Hugh Wheeler; the development, writing, and performance of the one-person-show Privileged Eyes; and development of a website and statement of artistry.
Characterization Of Microtubule Organizing Centers In The Genus Protostelium, Including Evolutionary Implications, Ethan Taylor Ozment
Characterization Of Microtubule Organizing Centers In The Genus Protostelium, Including Evolutionary Implications, Ethan Taylor Ozment
Graduate Theses and Dissertations
Microtubule organizing centers (MTOCs) are cellular regions of microtubule nucleation. The best known MTOCs are those associated with the centrosome, but several non-centrosomal MTOCs are known in eukaryotes, especially in land plants. MTOCs are poorly characterized across the breadth of amoebozoan diversity, but are well-known in certain amoebozoan lineages, including the genus of protosteloid slime molds Protostelium. The structure of the MTOC is known for two non-ciliated species, P. nocturnum and P. mycophaga, as well as P. aurantium, which can reversibly become ciliated under appropriate conditions. P. nocturnum and P. mycophaga have acentriolar centrosomal MTOCs while P. aurantium has a …
Maternal Criticism: Reading Two Middle Eastern Women Writers As Nonviolent Peace Activism, Charlyn Marie Ingwerson
Maternal Criticism: Reading Two Middle Eastern Women Writers As Nonviolent Peace Activism, Charlyn Marie Ingwerson
Graduate Theses and Dissertations
This dissertation advocates for reading the literatures of two Middle Eastern women writers through a Maternal Critical lens that recognizes the demands of universal vulnerability in characters who resist violence, and responds in Maternal communities of Readers that connect readers to characters, readers to writers, and readers to other readers, carrying the struggle for equity forward. My unfolding argument, centered on Maternal Critical activity in the novels of Palestinian writer Sahar Khalifeh and Israeli writer Ronit Matalon, demonstrates how literature by these Middle Eastern women is part of a narrative context of women’s peacemaking and resistance to violence, a part …
Targeting Sec61Α By Ipomoeassin F Leads To Highly Cytotoxic Effect, Zhijian Hu
Targeting Sec61Α By Ipomoeassin F Leads To Highly Cytotoxic Effect, Zhijian Hu
Graduate Theses and Dissertations
Ipomoeassin F is a flagship congener of a resin glycoside family that inhibits growth of many tumor cell lines with only single-digital nanomolar IC50 values. However, biological and pharmacological mechanisms of ipomoeassin F have been undefined. To facilitate exploration of the biological and pharmacological properties, we performed sophisticate SAR (Structure–activity relationship) studies of ipomoeassin F to understand its pharmacophore and structure properties so that we can design favorable probes for further biological investigation. By applying appropriate deviates that possess fluorescent groups and similar bio-activity, the target protein was found to be localized in endoplasmic reticulum (ER). Through biotin affinity pull …
Legislative And Executive Branch Developments Affecting The United States Department Of Agriculture Supplemental Nutrition Assistance Program, Sheila Fleischhacker, Alyssa Moran, Sara N. Bleich
Legislative And Executive Branch Developments Affecting The United States Department Of Agriculture Supplemental Nutrition Assistance Program, Sheila Fleischhacker, Alyssa Moran, Sara N. Bleich
Journal of Food Law & Policy
For more than forty years, the United States Department of Agriculture Supplemental Nutrition Assistance Program (SNAP; formerly Food Stamps) has offered nutrition assistance to nearly forty million eligible individuals and families each month. This article first provides a brief overview of the evolution of the United States’ largest domestic food security and nutrition safety net program. Then, the article reviews Congressional actions taken regarding SNAP during the 2018 Farm Bill deliberations, appropriations for fiscal years 2017 through 2020, and oversight (in)activities. The article focuses on Congressional activities regarding block grants; participant eligibility; benefit adequacy, issuance, and redemption; and strengthening SNAP’s …
Design Of Remote Datalogger Connection And Live Data Tweeting System, Zachary Wofford
Design Of Remote Datalogger Connection And Live Data Tweeting System, Zachary Wofford
Biological and Agricultural Engineering Undergraduate Honors Theses
Low-Impact Development (LID) is an attempt to sustainably respond to the potential hazards posed by urban expansion. Green roofs are an example of LID design meant to reduce the amount of runoff from storm events that are becoming more intense and less predictable while also providing insulation to buildings. LID has not yet been widely adopted as it is often a more expensive alternative to conventional infrastructure (Bowman et. al., 2009). However, its benefits are apparent. The University of Arkansas Honors College awarded a grant to research the large green roof atop Hillside Auditorium. One part of this grant is …
Internal Design Of A Hydroponics Greenhouse For Tri Cycle Farms, Sarah Gould
Internal Design Of A Hydroponics Greenhouse For Tri Cycle Farms, Sarah Gould
Biological and Agricultural Engineering Undergraduate Honors Theses
Hydroponics is the agricultural technique of growing plants without soil, using other growing media and added nutrients in a solvent. It is an attractive agricultural method over conventional agriculture because it is more water efficient, is less labor intensive, yields higher quality crops in less time, and is easier to control. According to the Digital Journal, “hydroponics crop value is anticipated to grow to USD 27.29 Billion by 2022 at an estimated CAGR of 6.39% from 2015 to 2020” (Sawant, 2016). Alongside this growing market acceptance for hydroponics, there is also a local demand that requires only a small transportation …
Lighting And Economic Considerations For A Hydroponic S-Based Greenhouse At Tri Cycle Farms, Laura Gray
Lighting And Economic Considerations For A Hydroponic S-Based Greenhouse At Tri Cycle Farms, Laura Gray
Biological and Agricultural Engineering Undergraduate Honors Theses
Hydroponics is an agricultural technology that involves growing plants without soil, instead using other growth media with added nutrients, typically inside a controlled facility such as a greenhouse. Hydroponics-based agriculture has a number of benefits, namely that it is more water efficient, requires less intensive labor, yields higher quality crops consistently in shorter time, and is easier to control. It also has the potential to be economically advantageous, due to its ability to grow certain crops in the off-season. In Fayetteville, Arkansas, a non-profit urban farm known as Tri Cycle Farms has been seeking a way to design, build, and …
Effectiveness Of Titanium And Iron Nanoparticles In Treating M. Aeruginosa For Harmful Algal Bloom Remediation, Natalie Von Tress
Effectiveness Of Titanium And Iron Nanoparticles In Treating M. Aeruginosa For Harmful Algal Bloom Remediation, Natalie Von Tress
Biological and Agricultural Engineering Undergraduate Honors Theses
Harmful Algal Blooms (HABs) are a growing issue worldwide, posing harm to both aquatic ecosystems and drinking water quality. This issue could be potentially mitigated using nanoparticle (NP) treatment, simultaneously removing cyanobacteria and associated cyanotoxins in HABs. This research seeks to discern the effectiveness of using titanium dioxide and iron (III) oxide NP treatment at removing cyanobacteria via flocculation and sedimentation. Each NP at 25 mg/L and 50 mg/L were used to treat suspended culture of Microcystis aeruginosa, the representative cyanobacteria, up to 72 hours. Cell concentration and morphology in the supernatant were measured via a Coulter counter and …
Simulating Delayed Flood And Alternate Wetting And Drying Rice Production In Arkansas Using Apex, Jaden Tatum
Simulating Delayed Flood And Alternate Wetting And Drying Rice Production In Arkansas Using Apex, Jaden Tatum
Biological and Agricultural Engineering Undergraduate Honors Theses
Rice is a staple food for billions of people, and rice production will need to grow with global populations. One potential solution to decrease the environmental impacts associated with rice production is alternate wetting and drying (AWD) management which, as opposed to sustained flooding, allows a reduction of water use and methane emissions. Studies into AWD have shown that yield levels may be conserved when using this practice, which would be necessary for widespread implementation. Modeling AWD management changes successfully would help to determine where and to what extent this practice may be effective in the US. The management and …
Ecological Co2 Flux Of A Green Roof Ecosystem And A Typical Grassland Ecosystem, Madeline Oxner
Ecological Co2 Flux Of A Green Roof Ecosystem And A Typical Grassland Ecosystem, Madeline Oxner
Biological and Agricultural Engineering Undergraduate Honors Theses
The Hillside Auditorium Green Roof is a low impact development feature on the University of Arkansas campus. It retains storm water and allows plants living on the roof to take up and transpire the water. Green roofs work to mimic natural ecosystems in urban environments. A key property is ecosystem respiration, which plays a large role in the global carbon cycle and is an important biologic activity indicator. The ecosystem respiration of Hillside Auditorium Green Roof was compared to a typical grassland ecosystem at the University of Arkansas farm to determine how closely the green roof is able to mimic …
Quantifying Litter Decomposition Rates On A Semi-Intensive Green Roof, Eli Lasalle
Quantifying Litter Decomposition Rates On A Semi-Intensive Green Roof, Eli Lasalle
Biological and Agricultural Engineering Undergraduate Honors Theses
The overall goal of this study was to provide a measure of the decomposition rate constant on a semi- intensive green roof located in Fayetteville, Arkansas. The specific approach chosen was the use of the Tea Bag Index (TBI), a standardized plant litter decomposition test. There was some heterogeneity observed on site and the locations of samples tested were chosen based on this. Additional laboratory tests were conducted in order to determine whether there would be a large impact of temperature on decomposition or if it would be outweighed by other factors. The temperatures compared were 5°C, 20°C, and 30°C. …
Music, Language, And Rhythmic Timing, Rhimmon Simchy-Gross
Music, Language, And Rhythmic Timing, Rhimmon Simchy-Gross
Graduate Theses and Dissertations
Neural, perceptual, and cognitive oscillations synchronize with rhythmic events in both speech (Luo & Poeppel, 2007) and music (Snyder & Large, 2005). This synchronization decreases perceptual thresholds to temporally predictable events (Lawrance et al., 2014), improves task performance (Ellis & Jones, 2010), and enables speech intelligibility (Peelle & Davis, 2012). Despite implications of music-language transfer effects for improving language outcomes (Gordon et al., 2015), proposals that shared neural and cognitive resources underlie music and speech rhythm perception (e.g., Tierney & Kraus, 2014) are not yet substantiated. The present research aimed to explore this potential overlap by testing whether music-induced oscillations …
Diffuse Reflectance Spectroscopy To Quantify In Vivo Tissue Optical Properties: Applications In Human Epithelium And Subcutaneous Murine Colon Cancer, Gage Joseph Greening
Diffuse Reflectance Spectroscopy To Quantify In Vivo Tissue Optical Properties: Applications In Human Epithelium And Subcutaneous Murine Colon Cancer, Gage Joseph Greening
Graduate Theses and Dissertations
Colorectal cancer is the 4th most common and 2nd deadliest cancer. Problems exist with predicting which patients will respond best to certain therapy regimens. Diffuse reflectance spectroscopy has been suggested as a candidate to optically monitor a patient’s early response to therapy and has been received favorably in experimentally managing other cancers such as breast and skin. In this dissertation, two diffuse reflectance spectroscopy probes were designed: one with a combined high-resolution microendoscopy modality, and one that was optimized for acquiring data from subcutaneous murine tumors. For both probes, percent errors for estimating tissue optical properties (reduced scattering coefficient and …
“A Woman’S Story”: Lady Macbeth And Performing Femininity In The Early 1600s – Late 1900s, Phyllis Lebert
“A Woman’S Story”: Lady Macbeth And Performing Femininity In The Early 1600s – Late 1900s, Phyllis Lebert
Graduate Theses and Dissertations
This paper uses gender studies to understand the themes of gender performance further, and more specifically, femininity, in Shakespeare’s Macbeth. It also explores the many ways feminine gender performance has changed as society has changed. Thus, proving gender is performative rather than innate. It does this by examining first the text within the context of Elizabethan society. Moreover, by examining three pivotal performances of Lady Macbeth through history within the context of their social structures as well. The three performances are that of Sarah Siddons in the Late 18th Century, Ellen Terry in the 19th Century, and Judy Dench in …
Multicultural News, April 1, 2019, University Of Arkansas, Fayetteville. Walter J. Lemke Department Of Journalism
Multicultural News, April 1, 2019, University Of Arkansas, Fayetteville. Walter J. Lemke Department Of Journalism
Multicultural News
"A laboratory production of the University of Arkansas Walter J. Lemke Department of Journalism and printed by the Morning News."--Apr. 6, 2006
Removal Of Synthetic Azo Dye Using Bimetallic Nickel-Iron Nanoparticles, Shelby L. Foster, Katie Estoque, Michael Voecks, Nikki Rentz, Lauren F. Greenlee
Removal Of Synthetic Azo Dye Using Bimetallic Nickel-Iron Nanoparticles, Shelby L. Foster, Katie Estoque, Michael Voecks, Nikki Rentz, Lauren F. Greenlee
Chemical Engineering Faculty Publications and Presentations
Bimetallic nanoparticles comprised of iron (Fe) and nickel (Ni) were investigated for the removal of an azo dye contaminant in water. Morphology (core shell and alloy) and metal molar ratio (Ni2Fe10, Ni5Fe10, and Ni10Fe10) were tested as key nanoparticle properties. The shelf life of the nanoparticles was tested over a 3-week period, and the effect of initial nanoparticle concentration on dye removal was evaluated. The highest initial nanoparticle concentration (1000 mg/L) showed consistent Orange G removal and the greatest extent of dye removal, as compared to the other tested concentrations (i.e., 750 mg/L, 500 mg/L, and 250 mg/L) for the …
Methods And Compositions For X-Ray Induced Release From Ph Sensitive Liposomes, Daniel Fologea, Ralph Henry, Greg J. Salamo, Yuriy Mazur, Michael J. Borrelli
Methods And Compositions For X-Ray Induced Release From Ph Sensitive Liposomes, Daniel Fologea, Ralph Henry, Greg J. Salamo, Yuriy Mazur, Michael J. Borrelli
Patents Granted
Compositions including pH sensitive lipid vesicles comprised of a lipid layer, an agent, and an organic halogen such that the agent is released from the vesicles after exposure to ionizing radiation. Methods of delivering the agent to a target in a subject using the compositions provided herein are also described. The methods allow for controlled release of the agent. The timing of release of the agent from the lipid vesicle may be controlled as well as the location of release by timing and localizing the exposure to ionizing radiation exposure.
Ansc, Spring 2019, University Of Arkansas, Fayetteville. Department Of Animal Sciences
Ansc, Spring 2019, University Of Arkansas, Fayetteville. Department Of Animal Sciences
Animal Science Newsletter
"Dedicated to the Alumni and Friends of the Animal Sciences Department, University of Arkansas."
The Constitutional Rights Of Advanced Robots (And Of Human Beings), R. George Wright
The Constitutional Rights Of Advanced Robots (And Of Human Beings), R. George Wright
Arkansas Law Review
Constitutional rights create and destroy otherwise available options for the rights-bearer, for governments, and for affected third parties. Thus, conferring a constitutional right always requires at least some minimal defense. But conferring a constitutional right can certainly be appropriate if the recipient of the right seems to deserve or otherwise qualify for the right in question, or if conferring the right makes sense on other, perhaps partly pragmatic, grounds.
Protecting Due Process During Terrorism Adjudications: Redefining "Crimes Against Humanity" And Eliminating The Doctrine Of Complimentary Jurisdiction In Favor Of The International Criminal Court, Daniel N. Clay
Arkansas Law Review
“When we sit in judgment we are holding ourselves out as people—as the kind of a community—that are worthy of this task. It is the seriousness, the gravity, of the act of judgment which gives rise to our legitimate and laudable emphasis on procedural fairness and substantive accuracy in criminal procedure. But these things focus on the defendant—the one judged. I am concerned about us who would presume to sit in judgment. Who are we that we should do this? Whether we intend to do so or not, we answer this question in part through the way we conduct our …
A Long-Term (2002 To 2017) Record Of Closed-Path And Open-Path Eddy Covariance Co2 Net Ecosystem Exchange Fluxes From The Siberian Arctic, David Holl, Christian Wille, Torsten Sachs, Peter Schreiber, Benjamin R. K. Runkle, Lutz Beckebanze, Moritz Langer, Julia Boike, Eva-Maria Pfeiffer, Irina Fedorova, Dimitry Y. Bolshianov, Mikhail N. Grigoriev, Lars Kutzbach
A Long-Term (2002 To 2017) Record Of Closed-Path And Open-Path Eddy Covariance Co2 Net Ecosystem Exchange Fluxes From The Siberian Arctic, David Holl, Christian Wille, Torsten Sachs, Peter Schreiber, Benjamin R. K. Runkle, Lutz Beckebanze, Moritz Langer, Julia Boike, Eva-Maria Pfeiffer, Irina Fedorova, Dimitry Y. Bolshianov, Mikhail N. Grigoriev, Lars Kutzbach
Biological and Agricultural Engineering Faculty Publications and Presentations
Ground-based observations of land–atmosphere fluxes are necessary to progressively improve global climate models. Observed data can be used for model evaluation and to develop or tune process models. In arctic permafrost regions, climate–carbon feedbacks are amplified. Therefore, increased efforts to better represent these regions in global climate models have been made in recent years. We present a multi-annual time series of land–atmosphere carbon dioxide fluxes measured in situ with the eddy covariance technique in the Siberian Arctic (72◦220 N, 126◦300 E). The site is part of the international network of eddy covariance flux observation stations (FLUXNET; site ID: Ru-Sam). The …