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Dynamics In Drops As Confined Systems Containing Nanoparticles: Reformation Of Nanoparticles And Evaporation Of Water, Vijitha Mohan, Xianjie Qiu, Partho Neogi May 2021

Dynamics In Drops As Confined Systems Containing Nanoparticles: Reformation Of Nanoparticles And Evaporation Of Water, Vijitha Mohan, Xianjie Qiu, Partho Neogi

Chemical and Biochemical Engineering Faculty Research & Creative Works

Brine is used to displace crude oil in a reservoir and its performance improves when brine contains nanoparticles. It is the presence of nanoparticles in confinements, such as at dynamic contact lines and in thin films, which is of importance. The investigators here have determined a fast way to obtain confined systems by evaporating a small drop of water containing nanoparticles. Water droplets containing nanoparticles of alumina or silica were evaporated on surfaces of polyethylene terephthalate sheets, which are partially wet by water, and glass which is fully wet. After the liquid in the drops evaporated, the residues were examined …


Heavy Oil And Vapex Process: A Brief Review, Vijitha Mohan, Parthasakha Neogi, Baojun Bai May 2021

Heavy Oil And Vapex Process: A Brief Review, Vijitha Mohan, Parthasakha Neogi, Baojun Bai

Chemical and Biochemical Engineering Faculty Research & Creative Works

Heavy oil recovery requires either heat or solvent assistance to reduce its high viscosity first and then the less viscous oil can be recovered. Processes that use vapor assisted petroleum extraction (VAPEX) utilize vaporized solvent. Solvent vapors are introduced through a top injection well to induce viscosity reduction and the less viscous oil is collected at the bottom production well. It is noteworthy, that the solvent itself when recovered, can be seen as an integral part of oil. Exact molecular weight and chemistry of heavy oil is uncertain making analysis of thermodynamic properties difficult, however this is overcome by making …


Circular Dichroism In Atomic Resonance-Enhanced Few-Photon Ionization, A. H. N. C. De Silva, T. Moon, Daniel Fischer, For Full List Of Authors, See Publisher's Website. May 2021

Circular Dichroism In Atomic Resonance-Enhanced Few-Photon Ionization, A. H. N. C. De Silva, T. Moon, Daniel Fischer, For Full List Of Authors, See Publisher's Website.

Physics Faculty Research & Creative Works

We investigate few-photon ionization of lithium atoms prepared in the polarized 2p(mℓ = +1) state when subjected to femtosecond light pulses with left- or right-handed circular polarization at wavelengths between 665 and 920 nm. We consider whether ionization proceeds more favorably for the electric field co- or counter-rotating with the initial electronic current density. Strong asymmetries are found and quantitatively analyzed in terms of "circular dichroism"(CD). While the intensity dependence of the measured CD values is rather weak throughout the investigated regime, a very strong sensitivity on the center wavelength of the incoming radiation is observed. While the co-rotating …


A Novel Hybrid Gwo-Ls Estimator For Harmonic Estimation Problem In Time Varying Noisy Environment, Muhammad Abdullah, Tahir N. Malik, Ali Ahmed, Muhammad F. Nadeem, Irfan A. Khan, Rui Bo May 2021

A Novel Hybrid Gwo-Ls Estimator For Harmonic Estimation Problem In Time Varying Noisy Environment, Muhammad Abdullah, Tahir N. Malik, Ali Ahmed, Muhammad F. Nadeem, Irfan A. Khan, Rui Bo

Electrical and Computer Engineering Faculty Research & Creative Works

The power quality of the Electrical Power System (EPS) is greatly affected by electrical harmonics. Hence, accurate and proper estimation of electrical harmonics is essential to design appropriate filters for mitigation of harmonics and their associated effects on the power quality of EPS. This paper presents a novel statistical (Least Square) and meta-heuristic (Grey wolf optimizer) based hybrid technique for accurate detection and estimation of electrical harmonics with minimum computational time. The non-linear part (phase and frequency) of harmonics is estimated using GWO, while the linear part (amplitude) is estimated using the LS method. Furthermore, harmonics having transients are also …


Temperature-Dependent Rotationally Inelastic Collisions Of Ohˉ And He, Eric S. Endres, Steve Ndengué, Olga Lakhmanskaya, Seunghyun Lee, Francesco A. Gianturco, Richard Dawes, Roland Wester May 2021

Temperature-Dependent Rotationally Inelastic Collisions Of Ohˉ And He, Eric S. Endres, Steve Ndengué, Olga Lakhmanskaya, Seunghyun Lee, Francesco A. Gianturco, Richard Dawes, Roland Wester

Chemistry Faculty Research & Creative Works

We have studied the fundamental rotational relaxation and excitation collision of OHˉJ = 0 ↔ 1 with helium at different collision energies. Using state-selected photodetachment in a cryogenic ion trap, the collisional excitation of the first excited rotational state of OHˉ has been investigated and absolute inelastic collision rate coefficients have been extracted for collision temperatures between 20 and 35 K. The rates are compared with accurate quantum scattering calculations for three different potential-energy surfaces. Good agreement is found within the experimental accuracy, but the experimental trend of increasing collision rates with temperature is only in part reflected in the …


Steam Oxidation Of Ytterbium Disilicate Environmental Barrier Coatings With And Without A Silicon Bond Coat, Ken A. Kane, Eugenio Garcia, Sharon Uwanyuze, Michael Lance, Kinga A. Unocic, Sanjay Sampath, Bruce A. Pint May 2021

Steam Oxidation Of Ytterbium Disilicate Environmental Barrier Coatings With And Without A Silicon Bond Coat, Ken A. Kane, Eugenio Garcia, Sharon Uwanyuze, Michael Lance, Kinga A. Unocic, Sanjay Sampath, Bruce A. Pint

Materials Science and Engineering Faculty Research & Creative Works

The current generation of multilayer Si/Yb2Si2O7 environmental barrier coatings (EBCs) are temperature limited by the melting point of Si, 1414°C. To investigate higher temperature EBCs, the cyclic steam oxidation of EBCs comprised of a single layer of ytterbium disilicate (YbDS) was compared to multilayered Si/YbDS EBCs, both deposited on SiC substrates using atmospheric plasma spray. After 500 1-h cycles at 1300°C in 90 vol%H2O-10 vol%air with a gas velocity of 1.5 cm/s, both multilayer Si/YbDS and single layer YbDS grew thinner silica scales than bare SiC, with the single layer YbDS forming the …


Fuzzyart: An R Package For Art-Based Clustering, Louis Steinmeister, Donald C. Wunsch May 2021

Fuzzyart: An R Package For Art-Based Clustering, Louis Steinmeister, Donald C. Wunsch

Electrical and Computer Engineering Faculty Research & Creative Works

Adaptive Resonance Theory (ART) was introduced by Steven Grossberg as a theory of human cognitive information processing (Grossberg 1976, 1980). Extending the capabilities of the ART 1 model, which can learn to categorize patterns in binary data, fuzzy ART as described in (Carpenter, Grossberg, and Rosen 1991) has become one of the most commenly used Adaptive Resonance Theory models (Brito da Silva, Elnabarawy, and Wunsch 2019). By incorporating fuzzy set theroy operators, fuzzy ART is capable of learning from binaray and bounded real valued data. Its advantage over other unsupervised learning algorithms lies in the flexibility of the learning rule. …


Semi-Annual Progress Report #8, Missouri University Of Science And Technology. Inspire - University Transportation Center Apr 2021

Semi-Annual Progress Report #8, Missouri University Of Science And Technology. Inspire - University Transportation Center

Semi-Annual Progress Reports

No abstract provided.


Faculty Senate Meeting Minutes Apr. 29, 2021, Missouri University Of Science And Technology Faculty Senate Apr 2021

Faculty Senate Meeting Minutes Apr. 29, 2021, Missouri University Of Science And Technology Faculty Senate

Minutes & Agendas

No abstract provided.


2021 Undergraduate Research Conference Winners, Missouri University Of Science And Technology Apr 2021

2021 Undergraduate Research Conference Winners, Missouri University Of Science And Technology

Undergraduate Research Conference at Missouri S&T

No abstract provided.


Encoding Time-Series Ground Motions As Images For Convolutional Neural Networks-Based Seismic Damage Evaluation, Xinzhe Yuan, Dustin Tanksley, Pu Jiao, Liujun Li, Genda Chen, Donald C. Wunsch Apr 2021

Encoding Time-Series Ground Motions As Images For Convolutional Neural Networks-Based Seismic Damage Evaluation, Xinzhe Yuan, Dustin Tanksley, Pu Jiao, Liujun Li, Genda Chen, Donald C. Wunsch

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Traditional methods for seismic damage evaluation require manual extractions of intensity measures (IMs) to properly represent the record-to-record variation of ground motions. Contemporary methods such as convolutional neural networks (CNNs) for time series classification and seismic damage evaluation face a challenge in training due to a huge task of ground-motion image encoding. Presently, no consensus has been reached on the understanding of the most suitable encoding technique and image size (width × height × channel) for CNN-based seismic damage evaluation. In this study, we propose and develop a new image encoding technique based on time-series segmentation (TS) to transform acceleration …


Dynamic Topography Of The St. Francois Mountains, Joshua Carpenter Apr 2021

Dynamic Topography Of The St. Francois Mountains, Joshua Carpenter

Undergraduate Research Conference at Missouri S&T

The purpose of this research project was to search for evidence of relict topographic surfaces in the St. Francois Mountains that preserve a history of regional and/or global forces. To accomplish this, topographic cross-sections were taken in Google Earth to examine changes in the region's topography with focus towards the following features: sub-horizontal surfaces, knickpoints, and valley floors. Elevation data was then collected and plotted in Excel. This revealed sub-horizontal surfaces between elevations of ~1780-1545 ft; knickpoints between ~1700-900 ft; and valley floors at ~1470-1350 ft. and ~1200-900 ft. The sub-horizontal surfaces are interpreted as relict peneplains preserved during periods …


Solar Panel Recycling In The United States, Divyesh Shelar Apr 2021

Solar Panel Recycling In The United States, Divyesh Shelar

Undergraduate Research Conference at Missouri S&T

The last decade has seen enormous growth in the solar industry across the globe. According to the International Renewable Energy Agency (IREnA) in 2015 solar energy produced about 222 gigawatts worldwide with expected growth to top 4500 gigawatts by 2050. By comparison the United States is expected to see an additional 10.6 gigawatts in 2018. The Midwest has seen similar growth in the solar industry within the past decade. The problem is the technology used to convert the sun’s rays into electrical energy does not last forever. On average the industry rates a solar panel's life span around 25-30 years. …


Solar Panel Recycling In The United States, Hattie Matthews Apr 2021

Solar Panel Recycling In The United States, Hattie Matthews

Undergraduate Research Conference at Missouri S&T

The last decade has seen enormous growth in the solar industry across the globe. According to the International Renewable Energy Agency (IREnA) in 2015 solar energy produced about 222 gigawatts worldwide with expected growth to top 4500 gigawatts by 2050. By comparison the United States is expected to see an additional 10.6 gigawatts in 2018. The Midwest has seen similar growth in the solar industry within the past decade. The problem is the technology used to convert the sun’s rays into electrical energy does not last forever. On average the industry rates a solar panel's life span around 25-30 years. …


Recovery Of Degraded Lithium Ion Cathode Particles, James Kirtley Apr 2021

Recovery Of Degraded Lithium Ion Cathode Particles, James Kirtley

Undergraduate Research Conference at Missouri S&T

This project focuses on recovering the cathode materials of lithium ion batteries through atomic layer deposition (ALD) thin film coating. In industry, when a cathode material for a lithium ion battery are stored, it reacts with CO2 and moisture in the air creating Li2CO3 and LiOH on the particle surface. The harmful substances on the surfaces have a negative impact on battery performance and battery life. In this study, we found that when Li2Ni0.8Mn0.1Co0.1 (Ni-Rich NMC) is exposed to a high amount of moisture it degrades and the performance is reduced. For example, the discharge capacity of Degraded Ni-Rich NMC …


Co-Designing Ai Tools To Reduce Kidney Discard, Casey Hines Apr 2021

Co-Designing Ai Tools To Reduce Kidney Discard, Casey Hines

Undergraduate Research Conference at Missouri S&T

Currently, there are about 94,000 people on the kidney transplant waiting list. Less than one-third will receive a new kidney this year. Unfortunately, some kidneys that could have been transplanted into a new recipient, end up being discarded. The largest group of discarded kidneys are ones that are high-risk. At present, an organ procurement organization will send out offers for an available kidney to transplant centers. These offers go out in chronological order following the kidney transplant waiting list. A single high-risk kidney could potentially go through hundreds of offers before being accepted by a transplant center. The longer the …


Evaluating A Game Designed To Teach Gender Bias, Jessica Frame Apr 2021

Evaluating A Game Designed To Teach Gender Bias, Jessica Frame

Undergraduate Research Conference at Missouri S&T

Gender bias is prevalent in today's work force; while it doesn't look like it did a few decades ago, it is still very critical to detect and address it. With how unconscious and covert gender bias can be, it is difficult to teach in a normal environment without some backlash and varying information due to teaching styles, leading to differed outcomes of processing information. The WAGES Project, WAGES standing for Workshop Activity for Gender Equity Simulation, is an interactive research-based activity that showcases how gender bias within the workforce is relevant in a manner different than that of a basic …


Credibility And Divination In The Age Of Reason, Jessi Schoolcraft Apr 2021

Credibility And Divination In The Age Of Reason, Jessi Schoolcraft

Undergraduate Research Conference at Missouri S&T

Credibility is vital for comprehending the world around us. This is as true today as it was in the 18th century when Diderot and d'Alembert were producing France's first Encyclopédie. Translating articles from this body of knowledge provides insight into public perceptions of credibility. Designed to collect and share knowledge, the Encyclopédie required extensive collaboration among experts and editors. Article topics ranged from philosophy to the arts to physical science. What made these articles credible? Was it the oversight of well-known editors, the use of already verified sources, or the seal of approval from the State? Or was it a …


Unhappy Feet: Fred's Experience With Americans In Antarctica, Brian Lafser Apr 2021

Unhappy Feet: Fred's Experience With Americans In Antarctica, Brian Lafser

Undergraduate Research Conference at Missouri S&T

"Unhappy Feet” is an examination of the environmental impact of human settlement in Antarctica, and the effects that human-influenced Global Warming have had on some of its inhabitants. As told through the perspective of Fred, an Emperor Penguin, who developed a personal relationship with the author of this project during his nineteen month stay on the Southern Continent. It also points out flaws in the Non-Interference policies surrounding interaction with animals that have been put in place by the United States Antarctic Program. The aforementioned flaws are discussed through the use of primary sources, eyewitness accounts and pictures taken from …


Fear To Cooperation: A Brief History Of The Space Race, Dylan Clay Apr 2021

Fear To Cooperation: A Brief History Of The Space Race, Dylan Clay

Undergraduate Research Conference at Missouri S&T

In 1957, the United States and the Soviet Union engaged in a space race that, ironically, resulted in joint United States-Soviet Union missions with the 1975 Apollo-Soyuz program. Starting in the 1950s, the Cold War between the two nations led to a feeling of unease from the world populace, especially with uncertainty surrounding the superpowers' capabilities. In the late 1950s, the United States feared that they would lose the race to space because of Sputnik's success, but American efforts led to far greater success with American Astronauts landing on the moon, effectively ending the race to space. With both nations …


A Man Out West Is A Man, Nikola Andric Apr 2021

A Man Out West Is A Man, Nikola Andric

Undergraduate Research Conference at Missouri S&T

The goal of this research is to analyze who the cowboys were and show how the standard set for the cowboy in novels remained consistent during the period between 1902 and 1953. The presentation allows readers to think of their idea of a cowboy and then compare it with the idea of the cowboy drawn from the books used in the research. It is a great opportunity to find out who the perfect cowboy is, what cowboys' relationships with their horses look like, what is considered good, and what is considered evil during those fifty years. Above all, the most …


Small-Scale Wind Power Prediction, Nathan Skelton Apr 2021

Small-Scale Wind Power Prediction, Nathan Skelton

Undergraduate Research Conference at Missouri S&T

This study is focused on the development of viable power generation modeling for small scale wind power installations. Armed with a viable model, businesses and individuals would have another option to reliably power small-scale buildings or installations. This study defines small-scale wind power turbines as those installed on buildings, or otherwise operating under 30 meters (~100 feet). Both of these installation environments provide inconsistent wind speeds, among other properties, that most wind power models do not address. Through the development of a sample wind turbine and accompanying weather station, multiple methods of prediction have been implemented with varying degrees of …


Tempered Fbm With Reflecting Walls, Zachary Miller Apr 2021

Tempered Fbm With Reflecting Walls, Zachary Miller

Undergraduate Research Conference at Missouri S&T

Fractional Brownian Motion (FBM) is a Gaussian stochastic process with long-range correlations and a paradigmatic model for anomalous diffusion. For FBM confined by reflecting boundaries, recent work [1] demonstrated unusual accumulation and depletion of particles close to the walls. In many applications of FBM to physics, chemistry, and beyond, the long-range correlations are cut off (tempered) beyond a certain time scale [2]. Here, we study the behavior of tempered FMB in the presence of reflecting walls. More specifically, we analyze the probability density of tempered FBM on a one-dimensional interval between two reflecting wall.


Protein-Protein Interaction Important For Cytokinesis, Bethany Huinker Apr 2021

Protein-Protein Interaction Important For Cytokinesis, Bethany Huinker

Undergraduate Research Conference at Missouri S&T

During cytokinesis a ring containing actin and myosin forms and contracts, pinching the cell into two daughter cells. In budding yeast cells the gene Iqg1 is a gene necessary for proper actin ring formation and contraction. We have shown that Iqg1 interacts with the yeast formin proteins. This project will determine which domains of Iqg1 mediate the protein-protein interactions, which is important to understand the function of the binding between Iqg1 and formins in cytokinesis. We will use a GST pull down assay to study the binding of Iqg1 to the yeast formins Bni1 and Bnr1. We will compare binding …


Effects Of Sleep Deprivation On Learning In Fruit Flies, Natalie Gardner Apr 2021

Effects Of Sleep Deprivation On Learning In Fruit Flies, Natalie Gardner

Undergraduate Research Conference at Missouri S&T

The fruit fly Drosophila Melanogaster is an optimal research specimen when observing the effects of sleep deprivation on spatial learning. A fly's sleep can be tracked using locomotion while it is undisturbed and while it undergoes sleep deprivation. To measure a fly's visuospatial awareness, a region at a comfortable 24 degrees Celsius, among the rest of the arena yielding an uncomfortable temperature ranging from 36-37 degrees Celsius, is fit with a specific visual cue that the fly is able to identify. This region, along with it's visual cue, is rotated around the arena every 3 minutes, and the amount of …


Gender And Ethnicity Bias In Wildland Fire Journals, Elizabeth Feth Apr 2021

Gender And Ethnicity Bias In Wildland Fire Journals, Elizabeth Feth

Undergraduate Research Conference at Missouri S&T

Despite numerous efforts to improve both ethnic and gender diversity, STEM continues to be dominated by white men, particularly in field-based and management-driven disciplines of biology. The Association for Fire Ecology and the International Association for Wildland Fire have both formed diversity and inclusion committees since 2010 to examine and promote a more inclusive and balanced field; however, progress in these arenas can be slow. We examined peer reviewer discrimination against women and ethnic minorities in the International Journal of Wildland Fire in papers published from 2010 to 2019 utilizing the number of days in review compared against the total …


Water Splitting By Mixed Chalcogenide Catalysts, Isabella Feltenstein Apr 2021

Water Splitting By Mixed Chalcogenide Catalysts, Isabella Feltenstein

Undergraduate Research Conference at Missouri S&T

The depleting supply of fossil fuels has led to deeper investigation of water-splitting as a sustainable energy source. Specifically, using transition metal chalcogenides to catalyze the water-splitting reaction through oxygen and hydrogen evolution reactions. While the decreasing electronegativity of the chalcogenide group increases their activity, it also decreases their stability, leading to the investigation of mixed anion chalcogenides in order to keep both the stability and activity high. This research will further the understanding and efficiency of water-splitting for energy storage and inspire more research in the future. In these experiments, cobalt telluroselenide (Cox-Tey-Sez) and nickel telluroselenide (Nix-Tey-Sez) catalysts were …


Twitter Sentiment Analysis Of Major Us Topics, Arpan Das Apr 2021

Twitter Sentiment Analysis Of Major Us Topics, Arpan Das

Undergraduate Research Conference at Missouri S&T

The user base for social media platforms have seen sharp increases in nearly every year since their inception, to the point where it is a part of a daily routine in today’s society. Social media provides a powerful public platform for people to express their opinions and intentions regarding almost any topic. The objective of this study was to determine how the opinions of topics related to United States politics shift over the course of the election cycle and through the inauguration of the next president. These topics included the opinions of major events such as the major presidential candidates …


The Missouri Miner, April 28, 2021 Apr 2021

The Missouri Miner, April 28, 2021

The Missouri Miner Newspaper

No abstract provided.


Realtime Sensor For Detecting Gallium Infiltration Attack, Peter Holtmann Apr 2021

Realtime Sensor For Detecting Gallium Infiltration Attack, Peter Holtmann

Undergraduate Research Conference at Missouri S&T

The proposed research is to create a real-time sensor for detecting aluminum degradation due to gallium infiltration attacks, specifically in military vehicles and structures. Gallium acts as a poison to aluminum, leading to catastrophic failures of structural integrity. The proliferation of educational material on this subject raises security concerns for the United States Military, where nearly all structures utilize aluminum due to its high-strength, light-weight profile. Utilizing Fiber-Bragg Grating (FBG) sensors and machine learning techniques, this research aims to develop a real-time sensor to detect these attacks.