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Articles 1 - 12 of 12
Full-Text Articles in Physical Sciences and Mathematics
Dynamic Topography Of The St. Francois Mountains, Joshua Carpenter
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 …
A Man Out West Is A Man, Nikola Andric
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
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
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.
Water Splitting By Mixed Chalcogenide Catalysts, Isabella Feltenstein
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 …
Chemically Resolved Nuclear Spin Relaxation, Megan Sly
Chemically Resolved Nuclear Spin Relaxation, Megan Sly
Undergraduate Research Conference at Missouri S&T
In Nuclear Magnetic Resonance (NMR) Spectroscopy, the excitation of nuclear spins is used to generate spectra of radiofrequency resonance signals. The signal frequencies are typically used to determine the structure of chemical compounds, while the relaxation of the spins to thermodynamic equilibrium provides useful information about the molecular vicinity of a material. When a chemical compound occurs in different molecular environments, a single resonance signal can have multiple relaxation times. To quantify how much material is in how many different environments, a multi-exponential analysis was developed resolving resonance signals and relaxation times in two-dimensional contour plots. Samples of known resonance …
Analysis Of An Integral Metric On Hyperspaces, Darren Schmidt
Analysis Of An Integral Metric On Hyperspaces, Darren Schmidt
Undergraduate Research Conference at Missouri S&T
In this paper, we will be investigating how to compute the integral distance defined by Dr. Insall and Dr. Charatonik, and we will analyze the results from this computation. We develop a way to compute the integral distance by using Monte-Carlo Integration, and we analyze the time complexity and the error that results from this method of computation. We also investigate when this distance function is a metric, and how this metric compares to some other common metrics.
Effect Of Magnetic Moment On Thermal Conductivity, Anthony Lonsdale
Effect Of Magnetic Moment On Thermal Conductivity, Anthony Lonsdale
Undergraduate Research Conference at Missouri S&T
Insulating non-magnetic solids conduct heat through the lattice vibrations, also colloquially known as phonons. However, in magnetic solids, additional channel for the heat transport is available through the interaction of magnetic moments with each-other. On the other hand, lattice vibrations couple with the magnetic moments on the atoms and thus provide additional resistance to the heat flow. Currently, there is no complete understanding of the magnitudes of these contributions and the overall effect of the magnetic contribution is largely unknown. Using a combination of spin dynamics and molecular dynamics simulations, we simulated the contribution of the magnetic subsystem to the …
Machine Learning Optimizes A Survey Of Dark Energy, Steven Karst
Machine Learning Optimizes A Survey Of Dark Energy, Steven Karst
Undergraduate Research Conference at Missouri S&T
Measuring the history of cosmic expansion via the Baryon Acoustic Oscillation (BAO) scale from a three-dimensional galaxy map is a well established technique to probe the nature of dark energy. In fact, a forthcoming galaxy redshift survey, the Subaru Prime Focus Spectrograph (PFS), is designed mainly for this purpose. An essential optimization problem in such galaxy redshift surveys is the target selection. Namely, it is not clear how we should select our targets to maximize the number of galaxies which provide successful redshift measurement in a desired cosmic epoch, while avoiding other galaxies. Taking PFS as an example, we apply …
Amorphous Carbon Aerogels From Xerogel Powders, Daniel Greenan
Amorphous Carbon Aerogels From Xerogel Powders, Daniel Greenan
Undergraduate Research Conference at Missouri S&T
Carbon aerogels are well known for their high surface areas and high porosities. Their applications have been demonstrated in a wide range of areas such as CO2 capture, electrodes for electrochemical cells, etc. They are typically made from pyrolysis of carbonizable polymeric aerogels, which in turn are synthesized via sol-gel methods. Preparation of those polymeric aerogels involves supercritical fluid drying of wet-gels by replacing the pore-filling solvent with liquid CO2 that can be vented off as a gas, thus allowing pores to retain their shape and size. In contrast, here a new alternative route is proposed for the synthesis of …
The Effect Of Irradiating Aln On Its Dielectric Properties, Sean Anderson
The Effect Of Irradiating Aln On Its Dielectric Properties, Sean Anderson
Undergraduate Research Conference at Missouri S&T
Aluminum Nitride is an active element of sensors that monitor the performance and well-being of the nuclear reactors due to its piezoelectric properties. Yet, the variations of its properties under irradiation are largely unexplored. Here, we report the results of the molecular dynamics simulations of the structural changes in AlN under irradiation via the knock-on atom technique. By creating and evolving the irradiation cascades due to energetic particle interaction with the atom of the crystalline lattice we determine the rate of the defect production as a function of the deposited energy. Further, we determine a displacement energy, a key characteristic …
2nd Annual Undergraduate Research Conference Abstract Book, University Of Missouri--Rolla
2nd Annual Undergraduate Research Conference Abstract Book, University Of Missouri--Rolla
Undergraduate Research Conference at Missouri S&T
No abstract provided.