Evaluation Of Drought Tolerance In Arkansas Cowpea Lines At Seedling Stage,
2019
University of Arkansas
Evaluation Of Drought Tolerance In Arkansas Cowpea Lines At Seedling Stage, Qirui Cui
Crop, Soil and Environmental Sciences Undergraduate Honors Theses
Cowpea [Vigna unguiculate (L.) Walp.] is not only a healthy, nutritious and versatile leguminous crop, it also has a relatively high adaptation to drought. Researches have shown that cowpea lines have a high tolerance to drought, and many of them can survive over 40 days under very hot and dry conditions. The cowpea (Southern pea) breeding program at the University of Arkansas (UA) has been active for over 50 years and has produced more than 1,000 advanced breeding lines. And the purpose of this study is to evaluate the drought-tolerant ability in Arkansas cowpea lines and use the drought tolerant …
Investigating Virus Clearance Via Ph Inactivation During Biomanufacturing,
2019
University of Arkansas, Fayetteville
Investigating Virus Clearance Via Ph Inactivation During Biomanufacturing, Wenbo Xu
Biomedical Engineering Undergraduate Honors Theses
In the processing of biopharmaceuticals, viral clearance and viral safety are important for the development of monoclonal antibodies. Murine xenotropic leukemia virus (XMuLV) is one of the retroviruses, recommended by Food and Drug Administration (FDA) as a model virus for viral clearance via inactivation from therapeutics derived from Chinese hamster ovary cells (CHO). A robust and effective method was investigated to clear or inactivate endogenous viruses by low pH inactivation. The effects of different conductivity and inactivated time on XMuLV clearance was determined. Acetate buffer was prepared with different conductivity, and 2% XMuLV was spiked into acetate buffer. XMuLV virus …
The Effects Of Eicosapentaenoic Acid (Epa) And Docosahexaenoic Acid (Dha) On Brown Adipogenesis In Stem Cell Culture,
2019
University of Arkansas, Fayetteville
The Effects Of Eicosapentaenoic Acid (Epa) And Docosahexaenoic Acid (Dha) On Brown Adipogenesis In Stem Cell Culture, Darynne Dahlem
Animal Science Undergraduate Honors Theses
Polyunsaturated fatty acids (PUFAs), especially eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), are major maternal dietary supplements due to their positive benefits on neurological tissue growth during the first 12 weeks of gestation. Previous studies show that EPA and DHA inhibit muscle formation but promote adipogenesis. However, no research has addressed the question whether high intake of EPA and DHA affects brown fat development during gestation. The objective of this study was to measure the effect of EPA and DHA supplement on brown adipogenesis and potential pathways related to mitochondrial biosynthesis using fibroblasts as in vitro model. Using Oil-Red-O staining …
Increasing Low-Income Residents’ Access To Fresh Produce Through A Local Mobile Pantry,
2019
University of Arkansas, Fayetteville
Increasing Low-Income Residents’ Access To Fresh Produce Through A Local Mobile Pantry, Laura Wasson
Human Nutrition and Hospitality Management Undergraduate Honors Theses
Seeds that Feed (STF) is a mobile food pantry located in Fayetteville, Arkansas. STF receives produce from local farmers to distribute to residents in low-income housing sites throughout Northwest Arkansas. According to Feeding America, food insecurity affected 14.3% Washington County, Arkansas’ population in 2016. The purpose of this study was to determine if STF’s model is an effective way to increase individuals’ access to fresh fruits and vegetables and increase their potential to meet the United States Department of Agriculture’s Food Patterns (USDA-FP) for to fruit and vegetable consumption. Twenty-three participants from three sites completed the study. A survey was …
Service Learning,
2019
University of Nevada, Las Vegas
Service Learning, Thanh Nguyen
Second-Year Seminar Posters (COE 202)
Helping the community through service.
Perceptions Of The North American Free Trade Agreement And Mexican Migration: “What Is The Relationship Between Trade Liberalization And Labor Mobility?”,
2019
University of Arkansas, Fayetteville
Perceptions Of The North American Free Trade Agreement And Mexican Migration: “What Is The Relationship Between Trade Liberalization And Labor Mobility?”, Colin Gonzalez
Political Science Undergraduate Honors Theses
In an effort to understand the effectiveness of the North American Free Trade Agreement, the author uses previous academic literature to assesses the success of the North American Free Trade Agreement’s primary and peripheral goals. To understand how North American citizens, perceive NAFTA and their future relationship with one another, the author uses survey data to analyze attitudes of American and Mexican citizens towards trade liberalization (NAFTA) and labor mobility. Regression analysis reveals that there is a positive relationship between labor mobility and trade liberalization for Mexican citizens but not for American citizens. This is a significant finding that contributes …
Optical Response Analysis Of Thz Photoconductive Antenna Using Comsol Multiphysics,
2019
University of Arkansas, Fayetteville
Optical Response Analysis Of Thz Photoconductive Antenna Using Comsol Multiphysics, Jose Isaac Santos Batista
Electrical Engineering Undergraduate Honors Theses
A THz photoconductive antenna consists of antenna pads laid over a photoconductive substrate. These types of antennas are excited through the application of an optical pump (laser), which generates carriers inside the semiconductor. The acceleration and recombination of these carriers produce photocurrent that excites the antenna and generates THz pulse. This thesis focuses on analyzing the optical response of a photoconductive antenna, which consist of the interaction of the incident electric field of a laser pump with the radiating device. It develops the amplitude modulation process of a plane wave of light into a laser pump. It also takes into …
Characterization Of High Temperature Optocoupler For Power Electronic Systems,
2019
University of Arkansas, Fayetteville
Characterization Of High Temperature Optocoupler For Power Electronic Systems, David Gonzalez
Electrical Engineering Undergraduate Honors Theses
High-temperature devices have been rapidly increas due to the implementation of new technologies like silicon carbide, high-temperature ceramic, and others. Functionality under elevated temperatures can reduce signal integrity reducing the reliability of power electronic systems. This study presents an ongoing research effort to develop a high-temperature package for optocouplers to operate at higher temperature compared with commercial devices. Low temperature co-fired ceramic (LTCC) was used as the substrate. Bare die commercial LED and photodetectors were attached to the substrate and tested for functionality. Preliminary results show enhanced performance at elevated temperatures compared to a commercial optocoupler device.
Analysis Of Social Services Available To Seniors In Monterey County,
2019
California State University, Monterey Bay
Analysis Of Social Services Available To Seniors In Monterey County, Marijeanne Santina
Capstone Projects and Master's Theses
As America’s geriatric population increases due to the Baby Boomer generation getting older, it is crucial for sociologists to investigate the current social services available to the aging population. Increasing longevity of older adults means focusing promoting health, wellbeing and independence through different services and promoting a positive perspective of seniors by general society. The focus of this research is to examine the current geriatric resources available to seniors in Monterey County. My research question is: “To what extent are the current social services available to seniors fulfilling the needs of the community?” I would like to assess the current …
Empowerment Workshop: Helping End The Cycle Of Domestic Violence,
2019
California State University, Monterey Bay
Empowerment Workshop: Helping End The Cycle Of Domestic Violence, Brianna Caitlin Anderson
Capstone Projects and Master's Theses
The YWCA of Monterey County services victims of domestic violence and human trafficking. Currently too many victims of Domestic Violence cannot leave the cycle of abuse. While there are many reasons for this problem, this project focused on the fact that domestic violence victims cannot escape being controlled because they lack the power to become independent. The capstone project consisted of the development and implementation of a series of empowerment workshops to help clients break the cycle of domestic violence. Surveys collected at the end of each workshop were used to asses if participants had a change in self-esteem. The …
Project 150: High School’S Tough Enough,
2019
University of Nevada, Las Vegas
Project 150: High School’S Tough Enough, Korina Czajka
Second-Year Seminar Posters (COE 202)
Project 150 addresses the issue of youth homelessness in the Clark County School District. Project 150 currently serves more than 6,000 disadvantaged high school students at 58 schools in Southern Nevada.
Project 150,
2019
University of Nevada, Las Vegas
Project 150, Edith Garibay
Second-Year Seminar Posters (COE 202)
Project 150 addresses the issue of youth homelessness in the Clark County School District. Project 150 currently serves more than 6,000 disadvantaged high school students at 58 schools in Southern Nevada.
University Methodist Church,
2019
University of Nevada, Las Vegas
University Methodist Church, Michael Malikian
Second-Year Seminar Posters (COE 202)
Helping the community through service.
Silver-Based Microbial Check Valve For Spacecraft Potable Water Systems,
2019
University of Arkansas, Fayetteville
Silver-Based Microbial Check Valve For Spacecraft Potable Water Systems, Rogelio E. Garcia
Chemical Engineering Undergraduate Honors Theses
As human space exploration increases, the development of a more efficient potable water treatment system suited for spacecraft becomes crucial. This Waste-management Education Research Consortium (WERC) challenge was designed to explore the viability of microbial control through the utilization of silver ions as a biocide for possible integration into the Tranquility Node 3 water purification system aboard the International Space Station (ISS). Current systems using iodine risk causing hyperthyroidism from overexposure; however, silver can be safely ingested without this side effect. After researching silver delivery methods including electrochemical ion production, controlled release, or a combination of the two, our team …
The Effects Of A Literacy-Based Mentoring Program On Empowering Preadolescent Girls In Their Development Of Confidence, Self-Concept, And Leadership Skillset,
2019
University of Arkansas, Fayetteville
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, …
Tension Splitting Strength Of Bcsa Concrete Cylinders,
2019
University of Arkansas, Fayetteville
Tension Splitting Strength Of Bcsa Concrete Cylinders, Andrew Steven Deschenes
Civil Engineering Undergraduate Honors Theses
The focus of this research was to compare the tension splitting strength (TSS) of belitic calcium sufloaluminate (BCSA) cement concrete to tensile strength predicted by the American Concrete Institute (ACI) and to similarly proportioned portland cement (PC) concrete. BCSA is a rapid-setting cement with higher early strength, higher ettringite content, and lower calcium silicate hydrate (C-S-H) content than PC. PC and BCSA cement concrete cylinders were broken at different ages in both uniaxial compression and TSS. It was found that BCSA had a similar TSS to both the ACI prediction and PC TSS, but the results require further testing for …
Turbulent Effects On Building Pressure Using A Two-Dimensional Finite Element Program,
2019
University of Arkansas, Fayetteville
Turbulent Effects On Building Pressure Using A Two-Dimensional Finite Element Program, Jonese Woods
Civil Engineering Undergraduate Honors Theses
Much of the knowledge about building aerodynamics today was obtained from physical testing like wind tunnel testing. Physical testing is time-consuming and very expensive. As a result, computational methods like the finite element method are being explored for use in building aerodynamics. Despite several years of research, there is still not a clear understanding of the peak pressure on buildings due to turbulence. Many of the research thus far has focused on comparing different computational methods. However, much work is needed in understanding the capability of the individual methods. In this work, a two-dimensional finite element program is used to …
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,
2019
University of Arkansas, Fayetteville
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,
2019
University of Arkansas, Fayetteville
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 …
Concentration Of Hot Water Extracts Of Anthocyanins Obtained From Muscadine Grape Pomace Using Membrane-Osmotic Distillation,
2019
University of Arkansas, Fayetteville
Concentration Of Hot Water Extracts Of Anthocyanins Obtained From Muscadine Grape Pomace Using Membrane-Osmotic Distillation, Chuqiao Mai
Food Science Undergraduate Honors Theses
Anthocyanins are well known for their health-promoting benefits. The goal of this study was to evaluate a distillation-based membrane technology to concentrate aqueous anthocyanins extracted from muscadine grape pomace using polypropylene (PP) or ethylene chlorotrifluoroethylene (ECTFE) membranes. A hot water extraction method was utilized to extract the anthocyanins from the pomace. A pre-experimental run using DI water as feed was conducted to optimize the NaCl brine concentration for osmotic distillation and it was determined that 4M was the optimal concentration. The aqueous anthocyanins extraction was filtrated through a series of filter of different pore sizes before the distillation process. Membrane …
