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2019

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Articles 91 - 120 of 136

Full-Text Articles in Service Learning

Investigation Of Acute Radiation-Induced Changes In Oxygenation In A Murine Breast Tumor Model, Alaa Abdelgawad May 2019

Investigation Of Acute Radiation-Induced Changes In Oxygenation In A Murine Breast Tumor Model, Alaa Abdelgawad

Biomedical Engineering Undergraduate Honors Theses

Around 50-60% of all cancer patients undergo radiation therapy. Although some patients show complete response with no recurrence, a significant proportion of the population still develop radiation resistance. It is important to identify tumor resistance at early stages of therapy in order to adjust treatment protocol and avoid extra exposure to radiation. Current methods to assess treatment response are only limited to anatomical measurements of tumor volume after therapy. Novel approaches that shed the light on any functional information during the course of radiotherapy could significantly improve our ability to identify patients who do not respond to radiation therapy. Diffuse …

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Silicone Tadpole: Research Into Soft Bodies, Danielle Fernandez May 2019

Silicone Tadpole: Research Into Soft Bodies, Danielle Fernandez

Mechanical Engineering Undergraduate Honors Theses

In this thesis, research is conducted in the area of soft robotics by building a soft tadpole that can deform with a specific air pressure. The goal is to mimic the motion of an organic tadpole in respect to its S-shaped tail movement. The angle of deformation, derived from material mechanic theories, ranges from 45 to 80 degrees for this type of movement. The design includes a head compartment which acts as a tank to transfer nitrogen pressure and a tail section that receives the said pressure and bends as a result. The tail section was designed with two rows …

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Design Of Artificial Swarms Using Network Motifs: A Simulation Study, Khoinguyen Trinh May 2019

Design Of Artificial Swarms Using Network Motifs: A Simulation Study, Khoinguyen Trinh

Mechanical Engineering Undergraduate Honors Theses

The objective of this research is to develop a new approach in engineering complex swarm systems with desired characteristics based on the theory of network motifs – subgraphs that repeat themselves (patterns) among various networks. System engineering has traditionally followed a top-down methodology which creates a framework for the system and adds additional features to meet specific design requirements. Meanwhile, complex swarm systems, such as ant colonies and bird flocks, are formed via a bottom-up manner where the system-level structure directly emerges from the interactions and behaviors among individuals. The behaviors of these individuals cannot be directly controlled, which makes …

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Evaluation Of Drought Tolerance In Arkansas Cowpea Lines At Seedling Stage, Qirui Cui May 2019

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 …

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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 May 2019

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, …

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The Diversity Of Terrestrial Mammals Surrounding Waterfall At Billy Barquedier National Park, Kelsey Johnson May 2019

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 …

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Investigating Virus Clearance Via Ph Inactivation During Biomanufacturing, Wenbo Xu May 2019

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 …

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Project 150: High School’S Tough Enough, Korina Czajka May 2019

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.

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Project 150, Edith Garibay May 2019

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.

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University Methodist Church, Michael Malikian May 2019

University Methodist Church, Michael Malikian

Second-Year Seminar Posters (COE 202)

Helping the community through service.

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The Effects Of Eicosapentaenoic Acid (Epa) And Docosahexaenoic Acid (Dha) On Brown Adipogenesis In Stem Cell Culture, Darynne Dahlem May 2019

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 …

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Increasing Low-Income Residents’ Access To Fresh Produce Through A Local Mobile Pantry, Laura Wasson May 2019

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 …

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Perceptions Of The North American Free Trade Agreement And Mexican Migration: “What Is The Relationship Between Trade Liberalization And Labor Mobility?”, Colin Gonzalez May 2019

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 …

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Service Learning, Thanh Nguyen May 2019

Service Learning, Thanh Nguyen

Second-Year Seminar Posters (COE 202)

Helping the community through service.

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Empowerment Workshop: Helping End The Cycle Of Domestic Violence, Brianna Caitlin Anderson May 2019

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 …

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Optical Response Analysis Of Thz Photoconductive Antenna Using Comsol Multiphysics, Jose Isaac Santos Batista May 2019

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 …

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Characterization Of High Temperature Optocoupler For Power Electronic Systems, David Gonzalez May 2019

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.

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Concentration Of Hot Water Extracts Of Anthocyanins Obtained From Muscadine Grape Pomace Using Membrane-Osmotic Distillation, Chuqiao Mai May 2019

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 …

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Silver-Based Microbial Check Valve For Spacecraft Potable Water Systems, Rogelio E. Garcia May 2019

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 …

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Tension Splitting Strength Of Bcsa Concrete Cylinders, Andrew Steven Deschenes May 2019

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 …

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Turbulent Effects On Building Pressure Using A Two-Dimensional Finite Element Program, Jonese Woods May 2019

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 …

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Analysis Of Social Services Available To Seniors In Monterey County, Marijeanne Santina May 2019

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 …

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The Effects Of A Literacy-Based Mentoring Program On Empowering Preadolescent Girls In Their Development Of Confidence, Self-Concept, And Leadership Skillset, Sophia Vincent May 2019

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, …

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The Crossing, A Christian Church, Victoria Pierce Apr 2019

The Crossing, A Christian Church, Victoria Pierce

Second-Year Seminar Posters (COE 202)

Helping the community through service.

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Table Of Contents, Iujsl, Vol. 8 Issue 2 Spring 2019 Apr 2019

Table Of Contents, Iujsl, Vol. 8 Issue 2 Spring 2019

The International Undergraduate Journal For Service-Learning, Leadership, and Social Change

No abstract provided.

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Editor's Notes, Ned Laff Ph.D., Editor Apr 2019

Editor's Notes, Ned Laff Ph.D., Editor

The International Undergraduate Journal For Service-Learning, Leadership, and Social Change

No abstract provided.

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Connecting People, Places, And Pollinators: A Year-Long Classroom And Community Collaboration In Portland, Oregon, Hannah Werthman Apr 2019

Connecting People, Places, And Pollinators: A Year-Long Classroom And Community Collaboration In Portland, Oregon, Hannah Werthman

The International Undergraduate Journal For Service-Learning, Leadership, and Social Change

This unique project at Portland State University (PSU) has been revolutionizing undergraduate community-based learning (CBL) efforts since the collaboration started in 2012. This case study involves a deep look into a year-long CBL effort involving three university instructors, two undergraduate student fellows from PSU’s Institute for Sustainable Solutions (ISS), Green Lents, a neighborhood-based nonprofit, and approximately seventy-five undergraduate students.

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Closing The Gap Between College Students’ Professional Attire Needs And Career Readiness, Jenna Lane, Ashley Rankin, Grayson Capps, Safiya Rann, Jenna Basel Apr 2019

Closing The Gap Between College Students’ Professional Attire Needs And Career Readiness, Jenna Lane, Ashley Rankin, Grayson Capps, Safiya Rann, Jenna Basel

The International Undergraduate Journal For Service-Learning, Leadership, and Social Change

With the rising cost of college, many students face a range of economic challenges, including the professional attire required for job and internship interviews. In response to this problem, the University of North Carolina offers a career-readiness program that allows students to “shop” for free professional clothing at its on-campus Food Pantry. The program is called Attire for Hire (AFH) and the purpose of this study was to examine its impact on participants in need of professional interview clothing. Participants were asked to complete a survey regarding their satisfaction, confidence, and knowledge of career development after the implementation of the …

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Case Study - The Organization And Promotion Of Health Services, Cindy Ramos Rico, Sarah Freschi Apr 2019

Case Study - The Organization And Promotion Of Health Services, Cindy Ramos Rico, Sarah Freschi

The International Undergraduate Journal For Service-Learning, Leadership, and Social Change

Our eight-week partnership took place in Cochabamba, Bolivia. Cochabamba is the third largest city in Bolivia with a population of 630,587. Our group partnered with Pro Mujer, an international microfinance organization founded in El Alto, Bolivia in 1990. Pro Mujer’s vision, as detailed on their website, is “a Latin America where all women thrive” and their mission is “to empower underserved women to achieve their full potential”. Pro Mujer empowers the women they serve through providing access to microfinance loans and communal banks, capacity-building workshops, and health services.

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Case Study: La Bisutería De La Escuela Especial De Nebaj, Amos Pomp, Leah Dunlevy Apr 2019

Case Study: La Bisutería De La Escuela Especial De Nebaj, Amos Pomp, Leah Dunlevy

The International Undergraduate Journal For Service-Learning, Leadership, and Social Change

In the Ixil Region of Guatemala’s Quiché Department, there is social stigma against people with physical, intellectual and developmental disabilities. Parents of children with special needs are often ashamed of their children and reluctant to take them outside or send them to school. Worldwide, children with disabilities are less likely to attend school, receive academic support to attain educational goals, and to experience familial and emotional support that increase quality of life. A similar lack of support for children with disabilities in Guatemala perpetuates their lack of access to opportunities for academic, social, and professional development, which contributes to stereotypes …

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