HNSE-P5-5. Assessing the Effect of Traffic-related Pollutants in Stormwater Contamination



Ceonie Washington1
Faculty Mentor: Erick Bandala, Ph.D.2
1Nevada State College, Department of Biology
2Desert Research Institute, Division of Hydrologic Sciences

ABSTRACT
Water is fundamental for sustainable development. Water bodies are basic as supply sources and also serve as stormwater reservoirs for urban communities. The rainwater ends up at local water bodies after its course through roads and sidewalks, collecting suspended solids usually associated with chemical contaminants. These contaminants potentially influence the population’s health by generating toxicity to the genetic, immune, and endocrine systems. This study aims to address the effect of traffic-related pollutants in stormwater contamination in the Las Vegas Metropolitan Area (LVMA) as a starting point for identifying solutions to the problem. Roadside dust samples were collected in different locations along the LVMA using an H2O filtration vacuum. The presence of heavy metals (e.g., iron, copper, and lead) and Total Petroleum Hydrocarbon (TPHs) in these samples were analyzed using Hach methods. In each sample, different concentrations of each heavy metal and TPHs were found suggesting that the residue from the vehicles in areas around the valley will reflect levels of contaminants in roadside dust that possess the potential to enter into stormwater effluents and reach Lake Mead, the main source of drinking water for LVMA.

AHS-P5-2. Working Long Hours in Indonesia Does Not Result in Economic Progress



Audrey Stephanie1
Faculty Mentor: Kimberly Nehls, Ph.D.1
1Lee Business School, Department of Marketing and International Business

ABSTRACT
The average Indonesian labor workers earn lower in terms of the hourly rate, thus forcing them to work longer hours to cover their daily financial needs, but how is this correlating to the country’s economic progress as a whole?
Data are collected from the year 2017 by comparing Indonesia’s Annual working hours vs. GDP per capita chart as well as the Annual working hours vs. Labor productivity chart to other countries.
Richer countries tend to have fewer working hours but higher wage rates as well as higher productivity. The annual working hours per worker in Indonesia is 2,024 hours while their GDP per Capita was at $10,594.07 in comparison to Japan, a richer country in ASIA with annual working hours per worker of 1,738 hours while their GDP per Capita was at $40,373.75 which is 4 times higher in terms of GDP.
The economic progress of a country does not solely depend on long working hours, it does have a lot to do with resources and the ability to increase their life quality but workers in poorer countries barely have time to improve themselves in terms of skills, knowledge, or just in terms of their general health both mentally and physically. Workers who already worked long hours barely have time to invest in themselves, thus placing them in a loophole.”

HNSE-P2-7. Drones for Monitoring and Early Disease Detection in Plants and Agriculture



Armaun Zargari1
Faculty Mentor: Paul Oh, Ph.D.1
1Howard R. Hughes College of Engineering, Department of Mechanical Engineering

ABSTRACT
The current procedures in place for monitoring crops and plant health are time consuming and labor intensive. It is crucial to diagnose areas of unhealthy vegetation quickly to limit the amount of permanent damage done as well as aiding in the planning for future planting locations. The entire process may be made more efficient with the utilization of drones that provide higher levels of accuracy, speed, and a larger field of view than traditional methods. These drones will be mounted with thermal and RGB cameras that will have the ability to spot irregularities in the wavelengths that are absorbed and reflected by the plants.

AHS-P5-3. Costa Rica’s Quest for Global Renewable Energy


Matthew Valenciano1
Faculty Mentor: Kimberly Nehls, Ph.D.2
1Lee Business School, Department of Economics
2Lee Business School, Department of Marketing and International Business

ABSTRACT
Global leaders understand that Earth cannot survive if we continue to use fossil fuels for energy use, yet renewables make up of just 26.2 percent of global electricity generation as of 2018. The United States and Europe have made contributions to global renewable energy use but haven’t made the leap that Latin American countries are willing to take. Primarily in Costa Rica, according to the country’s National Center for Energy Control, Costa Rica has been running on more than 98 percent renewable energy since 2014. Most of this energy, 67.5 percent, comes from hydropower. Additionally, wind power generates 17 percent, geothermal sources make up 13.5 percent and biomass and solar panels comprise 0.84 percent. Results show that Costa Rica has proven that their country can run solely on renewable energy for up to 300 days, as they proved this in 2017 where they set a world record. Due to Costa Rica’s plan to fully ban fossil fuels, deforestation has been successfully revered in the nation. Because of this, Costa Rica capitalized economically by enacting the Costa Rican Electricity Institute (ICE) and began selling its energy surplus to Central America’s Regional Electricity Market in 2015. The electricity helps power Guatemala, Nicaragua, Panama, Honduras, and El Salvador. By 2019, Costa Rica has earned more than $180 million in sales of surplus energy. We conclude that Costa Rica is leading the forefront in green energy while maximizing their profits to sell to poorer countries to solidify their status as a Latin American powerhouse.

HNSE-P1-5. Isolation of Salt Tolerant Bacteria and Investigation of Perchlorate Biodegradation at High Salinity Conditions



Aymen Shafique1
Yasaman Saedi2
Faculty Mentor: Jacimaria Ramos Batista, Ph.D.2
1College of Sciences, Department of Life Sciences
2Howard R. Hughes College of Engineering, Department of Civil and Environmental Engineering and Construction

ABSTRACT
Perchlorate (ClO4-), known as a highly soluble oxidizer contaminant, has been detected in soil and groundwater throughout the United States for the last two decades. Biological reduction has been seen as a promising technology through which perchlorate reducing bacteria (PRB) occurring naturally in most environments utilize ClO4- as an electron acceptor. However, biological reduction of perchlorate is influenced by high salinity levels because the PRBs’ activity is hindered at salinities over 1%. The goal of this study is to investigate the impact of salinity (NaCl: 0-6.5%) on perchlorate biological reduction. Actual soil samples from the contaminated site containing PRBs were used and acclimated in broths with different salt concentrations and later the cultures were tested on their reduction abilities using perchlorate (150 mg/L) as an electron acceptor (450 mg/L) and acetate as an electron donor. Gram-staining results revealed that there has been consistent growth of salt tolerant bacteria observed at each salt concentration level (0-6.5%). The variety of bacteria are displayed with the diverse shapes present under the compound microscope, from Gram-positive bacilli to Gram-negative cocci. However, it is important to consider that the reduction kinetic is slow even as the perchlorate reduction has been observed at 6.5% NaCl concentration. This will be further studied as the experiment is still running to obtain more promising results regarding perchlorate reduction and salt tolerant bacteria isolation. The conclusion drawn so far is that there are salt tolerant bacteria in this soil which can degrade perchlorate at environments with high salt concentration.

AHS-P4-8. The Uniqueness of Japan’s Love for Vending Machines



Vanessa Sanchez1
Faculty Mentor: Kimberly Nehls, Ph.D.1
1Lee Business School, Department of Marketing and International Business

ABSTRACT
Japan is widely known for their advancement in technology. One main use of technology in Japan is the frequent use of vending machines. They have a vending machine for just about anything, from the normal food and beverage to cigarettes and alcohol. In this research, there will be a further analysis of the many types of vending machines that are available in Japan. Specifically focusing on the vending machines that sell beyond the normal food and beverage. The main point will be to provide further detailed data for the uniqueness of usage of vending machines in japan.

AHS-P5-1. Entrepreneurship and the Fight Against Poverty in the Philippines



John Santos1
Flavia Nava2
Khashi Khorrami1
Jonathan Bronsoiler Mac2
Faculty Mentor: Kimberly Nehls, Ph.D.2
1Lee Business School, Department of Finance
2Lee Business School, Department of Marketing and International Business

ABSTRACT
Poverty is a global phenomenon characterized by people who live on US$1.25 daily. The universal call to action to end poverty is the foundation of the development agenda both nationally and globally. In accordance with the worldwide commitment toward the Sustainable Development Goals, the Philippine government has established the Philippine Development Plan that aims to build a stronger foundation for inclusive growth and by improving trade policies to stimulate a globally competitive knowledge economy. The Philippine government has to consider the critical dynamics in poverty in public policy and as well as expand the limitations of its assessments. Since the measurement of poverty can only be determined ex post, public interventions are only directed at those who are identified as poor. The vulnerability to poverty pertains to the risk to future poverty, thus trapping them in a cycle that diminishes capital from one generation to another. This study involves previous research that include estimates of vulnerability level of households to income poverty sourced from the Family Income and Expenditure Survey, as well as the Philippines’ official poverty lines. Several interventions have been established to alleviate poverty, such as the conditional money transfer, foreign aid, and as well as entrepreneurship. That so, results have indicated that entrepreneurship is effective in increasing the probability of alleviating poverty, thereby remaining above the impoverished threshold. The study makes a case on the Philippine government’s implication on creating income stabilization schemes to address poverty, and to come up with differentiated proposals for those highly vulnerable.

AHS-P6-7. The Effects of Altered GABAergic Signaling in Microglia on Hippocampal-cortical Network Activity and Remote Recall


Ava R. Platt1
Ryan A. Wirt1
Amanda M. Leisgang2
Emmanuel Flores1
Lauren Crew1
Jefferson W. Kinney, Ph.D.2
Faculty Mentor: James M. Hyman, Ph.D.1
1College of Liberal Arts, Department of Psychology
2School of Integrated Health Sciences, Department of Brain Health

ABSTRACT
Memory acquisition and encoding are modulated by neural network activity between the hippocampus (HPC) and prefrontal cortex (PFC). Research has shown that neuroimmune defense cells, glia, interact with neurons in both brain regions. However, little is known about glial-neuronal interactions, and how these interactions affect memory network activity and in turn, memory recall. Memory network activity involves a host of cellular excitation and inhibition. The primary neurotransmitter involved in inhibition is γ-aminobutyric acid (GABA), and receptors for this neurotransmitter can also be found on microglia. To better understand glial-neuronal interactions between the HPC and PFC, we utilized a mouse model (GABABFlox) with a knockdown of GABAB receptors on microglia, to alter microglial activity. Our lab utilizes electrophysiological recordings of neuronal activity related to learning and memory in the HPC and PFC. Mice were implanted with 64-channel implants to record from single cells and local field potentials (LFPs) while completing a conditioned place preference task to measure remote recall. Results showed that GABABFlox mice had remote recall (18days) deficits but intact recent recall (1day). We also found that GABABFlox mice had changes in multiple electrophysiological signals associated with memory processing, including: decreased gamma power in the HPC, impairments in theta-gamma comodulation in the cortex, theta and delta hypersynchrony between the HPC and cortex, and fewer sharp-wave ripples in the HPC. These findings suggest that GABAergic signaling on microglia may facilitate neural network systems involved in memory formation and recall, and that alterations in microglia may impair functions necessary for memory formation.

HNSE-P4-6. Systematic Literature Review: Feasibility of Utilizing Cultured Meats in the Food Industry



Abriana Perez1
Faculty Mentor: Moses Karakouzian, Ph.D.2
1College of Science, School of Life Sciences
2Howard R. Hughes College of Engineering, Civil and Environmental Engineering and Construction

ABSTRACT
The introduction of bioengineered meat specimens could be a potential alternative to avoid the negative factors that come along with standard meat. Cultured meat is produced by in vitro cell culture of animal cells using tissue engineering. This process and product has the potential to combat a lot of issues caused by the meat industry while essentially still producing the same product. The purpose of this paper is to expand on the research already conducted as well as to formulate a conclusion on the possibility of bringing cultured meats to the general public. In order to do this a systematic review was conducted for eleven pre-selected articles that were thoroughly read and analyzed. The focus of the research was on investigating the feasibility of producing and consuming cultured meat as well as the possible health and environmental effects it may cause. The findings of the articles suggest that there are currently too many challenges to be overcome and the use of cultured meats in the global market is not feasible in the near future. At this time more research is required before any advancements can be made.

This research was funded by the Southern Nevada Northern Arizona (SNNA) Louis Stokes Alliance for Minority Participation (LSAMP), which is housed within UNLV’s Center for Academic Enrichment and Outreach and supported by a grant (HRD – 1712523) from the National Science Foundation (NSF). Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the NSF. 

HNSE-P2-5. Synthesis and Characterization of Modified Walnut Shell Biochar


Maaike Parajes1
Suraj Pochampally1
Faculty Mentor: Jaeyun Moon, Ph.D.1
1Howard R. Hughes College of Engineering, Department of Mechanical Engineering

ABSTRACT
Biochar (BC) is a porous carbon material synthesized from different biomasses that are subjected to pyrolysis. This product is an efficient and eco-friendly alternative to conventional absorbents used for contaminant removal in groundwater systems. In this study, we aimed to develop efficient methods of preparing walnut shell-based biochar through acid, base, and steam modification and compare these modified biochars with the unmodified version. The preparation of biochar involved pyrolysis using an argon gas-filled chamber at a temperature of 900 °C. These BCs were then crushed and sieved to separate the microporous particles. To further evaluate the biochars’ characteristics, it was characterized using SEM, FTIR, EDS, BET, and contact angle measurements. The modification results showed that the modified biochars have different functional groups and are more hydrophilic than the unmodified biochar. Upon further investigation, the results can vastly improve the usage of biochar in the remediation process of contaminants to make the process economically feasible and environmentally friendly.

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