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Articles 451 - 480 of 827
Full-Text Articles in Physical Sciences and Mathematics
Frontline Experiences From Changing Fisheries Bycatch Paradigms, David Kerstetter
Frontline Experiences From Changing Fisheries Bycatch Paradigms, David Kerstetter
Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures
No abstract provided.
Tunable Copper Complexes For Sustainable Photocatalysis, David Kline
Tunable Copper Complexes For Sustainable Photocatalysis, David Kline
Posters-at-the-Capitol
Photoredox catalysis has direct applications in sustainable chemistry and thus an immense impact on our environment. With the ability to harness energy directly from the sun to catalyze useful chemical reactions, photocatalysts can help to eliminate the need for harsh reaction conditions and reduce generation of hazardous chemical waste. Photocatalysts based on Earth-abundant metals such as copper have recently emerged as sustainable alternatives to rare-earth metals including iridium and ruthenium, which are no longer required for many photocatalyzed chemical transformations.
Luna Gsa Fall 2017 Poster.Pptx, Melissa Luna
Luna Gsa Fall 2017 Poster.Pptx, Melissa Luna
Melissa Luna
'Catch The King' Tide With Stormsense On Nov. 5th: How You Can Help Crowd-Source Tidal Flood Event Calibrations For Hampton Roads' Newest Water Level Sensors, Jon Derek Loftis, Harry Wang, David R. Forrest
'Catch The King' Tide With Stormsense On Nov. 5th: How You Can Help Crowd-Source Tidal Flood Event Calibrations For Hampton Roads' Newest Water Level Sensors, Jon Derek Loftis, Harry Wang, David R. Forrest
Presentations
Dr. Derek Loftis presented his recent research related to installing new water level sensors (and some of the early event data the network has captured during Hurricanes Jose and Maria) in many Hampton Roads municipalities with the StormSense Smart Cities project. This presentation also introduces information related VIMS efforts with the CCRFR and local news media in the organization of the 'Catch the King' Tide crowd-sourcing data event using the Sea Level Rise App.
Optimizing Synthesis Of Substituted Oxadiazole Based Liquid Crystal Compounds.Pptx, Blake Bordokas
Optimizing Synthesis Of Substituted Oxadiazole Based Liquid Crystal Compounds.Pptx, Blake Bordokas
Blake Bordokas
Icmat 2017_Mv_Ecu-Final.Pptx, Mikhail Vasiliev, Kamal Alameh, Mohammad Nur-E-Alam, Victor Rosenberg
Icmat 2017_Mv_Ecu-Final.Pptx, Mikhail Vasiliev, Kamal Alameh, Mohammad Nur-E-Alam, Victor Rosenberg
Mikhail Vasiliev
No abstract provided.
Library Guides: An Aggregation Of User Research From 1998 To 2017, David Vess
Library Guides: An Aggregation Of User Research From 1998 To 2017, David Vess
Libraries
A truly comprehensive search tool for resources provided by libraries will continue to be a distant dream until daunting technical challenges are addressed. A Google-like search experience is desirable in some contexts, but a case can be made that hiding subject-specific article databases behind a comprehensive search tool is a disservice to researchers.
Librarians have a long history of addressing the complex landscape of the various resources they offer by crafting guides to library collections. These guides provide direct links to resources while educating inexperienced researchers about discipline-specific databases. Unfortunately, this solution creates more complexities in the research resource landscape. …
Searching For The Origins Of Matter, Joshua L. Barrow
Searching For The Origins Of Matter, Joshua L. Barrow
Andrews Research Conference
The big bang and inflation are experimentally confirmed by multitudes of astronomical observations, yet theoretical tension still exists upon a very important question: why is there something rather than nothing? In other words, why are there unequal amounts of matter and antimatter? Why did a supposedly initially symmetric state not annihilate perfectly?
The breaking of this symmetry has allowed for all of material existence--also known as baryogenesis, the prevalence of matter over antimatter--and yields the theoretical possibility of direct detection by observation of baryon number violating mechanisms, which have previously never been observed.
One such plausible mechanism can be found …
An Operational Drought Prediction Framework With Application Of Vine Copula Functions, Mahkameh Zarekarizi
An Operational Drought Prediction Framework With Application Of Vine Copula Functions, Mahkameh Zarekarizi
Student Research Symposium
Early and accurate drought predictions can benefit water resources and emergency managers by enhancing drought preparedness. Soil moisture memory is shown to contain helpful information for prediction of future values. This study uses the soil moisture memory to predict their future states via multivariate statistical modeling. We present a drought forecasting framework which issues monthly and seasonal drought forecasts. This framework estimates droughts with different lead times and updates the forecasts when more data become available. Forecasts are generated by conditioning future soil moisture values on antecedent drought status. The statistical model is initialized by soil moisture simulations retrieved from …
The Effects Of Urbanization On Nitrogen Processing In Urban Streams, Peter Francissen, Dr. Kevin Geedey, Dr. Michael Reisner
The Effects Of Urbanization On Nitrogen Processing In Urban Streams, Peter Francissen, Dr. Kevin Geedey, Dr. Michael Reisner
Celebration of Learning
Urban stream syndrome is described as the deterioration of stream health in an urbanized watershed and is associated with the loss of ecosystem services, which in turn degrades downstream environments. One key symptom of the urban stream syndrome is reduced processing of inorganic nitrogen. Previous research suggests that as urbanization increases and water quality decreases, the uptake length (Sw) of inorganic N increases. This indicates that the stream is increasing the export of N downstream compared to in situ incorporation of N into the ecosystem. We measured uptake length (Sw) of NO3, using a pulse addition method, along 9 different …
Unsupervised Machine Learning In Agent-Based Modeling, Luke D. Robinson
Unsupervised Machine Learning In Agent-Based Modeling, Luke D. Robinson
Celebration of Learning
Agent-based models (ABMs) are used by researchers in a variety of fields to model natural phenomena. In an ABM, a wide range of behaviors and outcomes can be observed based on the parameters of the model. In many cases, these behaviors can be categorized into discrete outcomes identifiable by human observers. Our goal was to use clustering algorithms to identify those outcomes from model output data. For this project, we used data from the NetLogo Wolf Sheep Predation model to explore and evaluate three clustering algorithms from Python's scikit-learn package. If this task can be completed reliably by a computer, …
Education On Campus Waste Disposal, Catherine Johnson, Christina Fox, Alyssa Schutzenhofer, Courtney Wilber
Education On Campus Waste Disposal, Catherine Johnson, Christina Fox, Alyssa Schutzenhofer, Courtney Wilber
Environmental and Sustainability Studies Undergraduate Projects
No abstract provided.
Pine Needle Pyrolysis: Bio-Waste Into Biofuel, Alexandra Fuentes
Pine Needle Pyrolysis: Bio-Waste Into Biofuel, Alexandra Fuentes
Scholarly and Creative Works Conference (2015 - 2021)
This project explores the alternate uses of biomass. In particular, it focuses on pine needles as a source for biofuels. Pine needles are of interest because in certain Mountain communities they are collected and removed from residential properties. By removing the pine needles, communities create a “defensible space” to prevent wild fires from destroying homes. These needles are often placed in regional landfills. The South Tahoe Refuse and Recycling Services alone has more than 4,340 tons of pine needles dumped at their facility annually. This large amount of biomass can be a potential energy source.
The focus of this research …
Kinetics Of Crystal Violet Color Fading Via A Small Footprint Diode Array Spectrometer, Paige Lott
Kinetics Of Crystal Violet Color Fading Via A Small Footprint Diode Array Spectrometer, Paige Lott
Georgia College Student Research Events
Crystal violet is a pH indicator and is commonly used to classify bacteria. In acidic solutions, crystal violet is yellow in color and at approximately the pH of 1.6, it transitions to a violet color. Over time, this violet color fades as it reacts with the CO 2 in the air until it is clear. A small footprint visible-near- infrared spectrometer (Vis-NIR) with diode array detector was employed in this investigation. Using the software that operates the spectrometer, the absorbance of crystal violet solutions can be measured at 585 nm at high concentrations of base as a function of time. …
Unusual Isotopic Effects Produced In Precipitation As A Byproduct Of Unusual Atmospheric Processes, Shelby Hurst
Unusual Isotopic Effects Produced In Precipitation As A Byproduct Of Unusual Atmospheric Processes, Shelby Hurst
Research and Creative Activities Poster Day
Precipitation is the ultimate source of all surface and groundwater recharge. Stable oxygen and hydrogen isotope investigation of precipitation has a long history. The factors controlling these stable isotopes are well known and include mean annual temperature, amount of precipitation, altitude and air mass trajectory (Dansgaard, 1964; Yurtsever and Gat, 1981).
The Chess Puzzle Lock Screen, Ryan J. Hayes
The Chess Puzzle Lock Screen, Ryan J. Hayes
Student Scholar Showcase
The Chess Puzzle Lock Screen
Many times each day, owners of cellphones use their phone’s lock screen in order to access their device. The goal of this project has been to take advantage of the action of unlocking one’s device by incorporating an element of self-help into the process. Every time a user who is interested in learning a new field attempts to access their device, that user is faced with a problem pertaining to a subject they are interested in learning more about. After many repetitions of this scenario, the user will have increased their understanding of this field. …
Virtual Reality: Google Cardboard And Unity, Emma Elliott
Virtual Reality: Google Cardboard And Unity, Emma Elliott
Student Scholar Showcase
Virtual Reality is currently the hottest way for people to play video games because it provides an immersive and interactive world to explore. It uses computer software to create sounds, realistic images, and other effects to simulate a virtual setting. The current craze started on the Oculus Rift headset and has incited other companies to make their own, but most are expensive or require another system to play. Instead of buying an expensive headset, anyone with a smartphone can play in Virtual Reality with Google’s cheap alternative, the Google Cardboard. The goal of this project is to complete a prototype …
Iso-Α-Acids Degradation In Beer, Emily Whittle
Iso-Α-Acids Degradation In Beer, Emily Whittle
Student Scholar Showcase
Iso-a-acids are one of the key components that provide bitterness to beer. Understanding the stability of beer flavor over extended period is useful to the rapidly expanding craft beer industry and to the consumer. The lupulin glands of hops (Humulus Lupulus, L.) contain three a-acids: humulone, adhumulone, and cohumulone. The a-acids are converted to six iso-a-acids upon boiling, this is the main reason for boiling wort during the brewing process. The six iso-a-acids are cis-isohumulone, trans-isohumulone, cis-isoadhumulone, trans-isoadhumulone, cis-isocohumulone, and trans-isocohumulone. We propose that the concentration of iso-a-acids in beer will decline over time …
Spectrofluorometric Analysis Of Bisphenol-A In Drinking Water Bottles, Jeff Brochetti
Spectrofluorometric Analysis Of Bisphenol-A In Drinking Water Bottles, Jeff Brochetti
Student Scholar Showcase
Spectrofluorometric Analysis of Bisphenol-A in Drinking Water Bottles
Bisphenol-A (BPA) is of environmental concern due to its ability to act as an endocrine disruptor in humans and many other animals. In the food industry, BPA is widely used in the production of plastic bottles and plastic liners in aluminum cans. Over time, trace amounts of BPA can leach from the container and into the contents inside. A new method of testing for trace amount of BPA involved the formation of an inclusion complex with ß-Cyclodextrin. With the formation of the inclusion complex, it becomes much easier to analyze low concentrations …
A Game Of Monovariants On A Checkerboard, Linwood Reynolds
A Game Of Monovariants On A Checkerboard, Linwood Reynolds
Student Scholar Showcase
Abstract: Assume there is a game that takes place on a 20x20 checkerboard in which each of the 400 squares are filled with either a penny, nickel, dime, or quarter. The coins are placed randomly onto the squares, and there are to be 100 of each of the coins on the board. To begin the game, 59 coins are removed at random. The goal of the game is to remove each remaining coin from the board according to the following rules: 1. A penny can only be removed if all 4 adjacent squares are empty. That is, a penny cannot …
Stacking 2d Materials, Michael Hernandez, John C. Mann
Stacking 2d Materials, Michael Hernandez, John C. Mann
Seaver College Research And Scholarly Achievement Symposium
Monolayer Transition Metal Dichalcogenides are atomically thin semi-conductors that are considered quasi 2D materials due to their extremely small thickness. It has been observed that atomically thin crystals exhibit different physical properties than their bulk counterparts due to quantum confinement effects. We are attempting discover new physical properties by developing a technique to stack two different monolayer crystals, MoS2 and MoSe2.
Stormsense Project: Forecasting Flooding From Storm Surge, Rain, And Tide, Jon Derek Loftis, David R. Forrest, Kyle Spencer
Stormsense Project: Forecasting Flooding From Storm Surge, Rain, And Tide, Jon Derek Loftis, David R. Forrest, Kyle Spencer
Presentations
The objective of StormSense is to enhance the capability of communities to prepare and respond to the disastrous impacts of sea level rise and coastal flooding in ways that are replicable, scalable, measurable, and make a comparable difference worldwide. The StormSense Project is an inundation forecasting research initiative partially funded by the National Institute of Standards and Technology to advance the field of emergency preparedness for flooding resulting from storm surge, rain, and tides. The scope of the project encompasses the interests of coastal local governments wishing to enhance their emergency preparedness via a network of 'Internet of Things' (IoT)-enabled …
Pliocene Record Of Antarctic Sedimentation, Melissa Luna
Pliocene Record Of Antarctic Sedimentation, Melissa Luna
Melissa Luna
No abstract provided.
Early College High Schools: Achieving The Dream Of College For Urban, North Texas Students, Wendy N. Jasper
Early College High Schools: Achieving The Dream Of College For Urban, North Texas Students, Wendy N. Jasper
National Youth Advocacy and Resilience Conference
Tarrant County College, an Achieving the Dream Leader College, has created an environment at its district that has made an Associate’s Degree attainable for students in the county’s most challenged high schools and may provide ideas for outreach and recruitment to those interested in developing an Early College High School within their home institution.
The Property Of Mass: An Interdisciplinary Metaphysical Investigation, Benjamin Hayworth
The Property Of Mass: An Interdisciplinary Metaphysical Investigation, Benjamin Hayworth
UNO Student Research and Creative Activity Fair
The property of mass as used in the physical sciences is somewhat of a metaphysical conundrum. Not only has the definition of mass changed with various paradigm shifts in physics, but the powers belonging to the property have also varied. In my study, I begin by examining the historical context surrounding the term, including the changes to its definition. In doing so, it is revealed that various definitions of mass are used and circulated in general discussion, so a cogent criterion of identity is established by which each definition can be measured. After determining the distinctions between each mass term, …
Characterization Of The Mannose-6-Phosphate/Insulin-Like Growth Factor Ii Receptor Using 1-3mh, Zechariah Craig
Characterization Of The Mannose-6-Phosphate/Insulin-Like Growth Factor Ii Receptor Using 1-3mh, Zechariah Craig
UNO Student Research and Creative Activity Fair
The mannose-6-phosphate/insulin-like growth factor 2 receptor (M6P/IGF2R), a recombinant triplet protein receptor for studies involving receptor dimerization, plays a pivotal role in mediating cellular growth. This receptor is comprised of fifteen similar units that fold into five triplet subunits. The goal of this experiment is to investigate how to make the 1-3MH protein more stable at the DNA level and generate a larger yield from DNA extractions for more effective transfections. This was accomplished by minorly changing the protocols for the DNA purification. Instead of using a standard column DNA purification kit, a crude DNA purification was done instead. This …
A Modular Robotic System For Assessment And Exercise Of Human Movement, Mohan Sai Ambati
A Modular Robotic System For Assessment And Exercise Of Human Movement, Mohan Sai Ambati
UNO Student Research and Creative Activity Fair
This project targets the problem of developing a wearable modular robotic system, for assessing human movement and providing different types of exercises for the user. The system attempts to provide not only a variety of exercises (concentric, eccentric, assisted and resisted), but also to assess the change in variability of the movement as the subject shows functional improvement. The system will not only be useful for patients with sensorimotor problem such as stroke, Parkinson’s, cerebral palsy, but also for special populations such as astronauts who spend long periods of time in space and experience muscle atrophy. In this work, a …
Optimizing Campus Mobility With A Focus On Sustainability: A Graph Theory Approach To Intra-Campus Transportation Networks, Quinn M. Nelson
Optimizing Campus Mobility With A Focus On Sustainability: A Graph Theory Approach To Intra-Campus Transportation Networks, Quinn M. Nelson
UNO Student Research and Creative Activity Fair
The idea of public transportation is supported by most in theory but often heavily criticized by users when put into application. There are common tensions that are related to public transportation, as described by frequent users: unreliable, too crowded, and slow. The University of Nebraska-Omaha (UNO) is a growing metropolitan institution that uses a shuttle system to transport students among their three campuses daily. As of 2015, the current total student enrollment is approximately 16,000; UNO plans to enroll 20,000 students by 2020. The expected student growth is also reflected by the current construction of new buildings and expansion of …
Between-Day Reliability Activity Fluctuations In Young Adults At Baseline And 6-Months Follow-Up, Connor J. Wicks
Between-Day Reliability Activity Fluctuations In Young Adults At Baseline And 6-Months Follow-Up, Connor J. Wicks
UNO Student Research and Creative Activity Fair
Human Daily Motor Activity (DMA) is characterized by complex temporal fluctuations and scale invariance. DMA is estimated from a time series composed of continuous amounts of activity recorded with the Actigraph GT9X monitor. The purpose of this study was to measure the complex temporal fluctuations in several young healthy adults over a 7-day period. After six months there was a follow-up of another 7-day period. Future collections will involve healthy older adults and adults with Parkinson’s disease. For the first phase of this study, 24 healthy young adults wore the monitor on their non-dominant hand for seven straight days. For …
Stronger Together: The Cross-Cultural Coalition To Stop Fossil Fuel Exports In The Salish Sea, Margaret Allen
Stronger Together: The Cross-Cultural Coalition To Stop Fossil Fuel Exports In The Salish Sea, Margaret Allen
Salish Sea Ecosystem Conference
A commonly observed paradox in conservation is that restriction of people’s access to nature and natural resources may protect ecosystem health, but sometimes decreases the wellbeing of local people and can invite conflict and reduce people’s willingness to protect resources. At a middle ground between complete protection and unrestricted commercial use is ecosystem-based management (EBM), which strives to maximize the overall wellbeing of both people and ecosystems. An important domain of human wellbeing to track for the purposes of EBM is resource access, or the ability to gain and maintain uses and benefits of the natural environment. Access does not …