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Articles 1 - 9 of 9
Full-Text Articles in Physical Sciences and Mathematics
Evaluating Our Reliance On Rare Earth Minerals And Platinum Group Metals Over The Period Of 2012 To 2021, Ryan Smith
Evaluating Our Reliance On Rare Earth Minerals And Platinum Group Metals Over The Period Of 2012 To 2021, Ryan Smith
Spring Showcase for Research and Creative Inquiry
Rare Earth Elements (REE’s) are minerals used in our everyday lives. They can be found in our household appliances, phones, computers, cars, as part of wind turbines and solar panels. The US relies on imports of these rare earths from several other countries (e.g. China, Estonia, Malaysia, and Japan) as we cannot mine a majority of the minerals (e.g. cerium, lanthanum, europium, etc) domestically. Since the year 2012, the US has imported approximately 3,000 metric tons of rare earths, and in recent years, this number significantly increased. As of 2021, the US now imports approximately 43,000 metric tons of rare …
Determination Of Nitrate In Aqueous Media, Ebony Arauz Tellez, John Bohannon, Rebecca Mills, Virginia Tam, Isabelle Villarreal, Melissa C. Rhoten
Determination Of Nitrate In Aqueous Media, Ebony Arauz Tellez, John Bohannon, Rebecca Mills, Virginia Tam, Isabelle Villarreal, Melissa C. Rhoten
Spring Showcase for Research and Creative Inquiry
Determining the amount of inorganic ions in aqueous media is important in the food industry and environmentally. In the environment high levels of ions like nitrate (NO3-), nitrite (NO2-), and phosphate (PO43-) can lead to unhealthy conditions for aquatic species. Similarly, high levels of nitrate and nitrite can cause health issues in humans. One method for determining nitrate levels in aqueous samples involves reducing the nitrate species to nitrite via a redox reaction with finely divided zinc powder followed by conversion to a diazonium salt and complexation with 1-napthylamine to form a …
Chem 403: Analysis Of Arsenic In Wine Using Xrf, Hannah Meyls
Chem 403: Analysis Of Arsenic In Wine Using Xrf, Hannah Meyls
2020 Virtual Spring Student Showcase for Research and Creative Inquiry
Arsenic contamination in food and beverages is a problem due to the harm it can cause consumers. Currently in the United States there is no regulation limit. Red, white, and pink wines will be analyzed for their concentration of inorganic arsenic. Analysis of the wines will be analyzed by x-ray fluorescence spectroscopy (XRF). From this experiment we hope to develop a new method for measuring low concentrations of arsenic in wine.
Physics 223 Poster: Hubble Law, Andrew Burghaus
Physics 223 Poster: Hubble Law, Andrew Burghaus
2020 Virtual Spring Student Showcase for Research and Creative Inquiry
The Objective of this experiment was to determine The Hubble constant.1 The Hubble constant is a ratio of the recessional velocity of distant galaxies to the distance that galaxy is from the Milky way. The constant can then be used to calculate the age of the universe. Doing this will allow us to compare our results with a more accepted quantity.
Physics 223 Poster: Hubble Law, William Coleman
Physics 223 Poster: Hubble Law, William Coleman
2020 Virtual Spring Student Showcase for Research and Creative Inquiry
The objective of this experiment was to calculate the age of the universe. This was done by using provided astronomical data to calculate an experimental Hubble’s constant to which Hubble’s law was applied.
Physics 223 Poster: Hubble Law, Rayshad Lindsay
Physics 223 Poster: Hubble Law, Rayshad Lindsay
2020 Virtual Spring Student Showcase for Research and Creative Inquiry
In the work is to determine the value for Hubble’s constant based on observing images and spectra of various spiral galaxies and determining the age of the universe.
Physics 223 Poster: Statistical Mechanics And Dice, Ibrahim Maday
Physics 223 Poster: Statistical Mechanics And Dice, Ibrahim Maday
2020 Virtual Spring Student Showcase for Research and Creative Inquiry
In this experiment we will •explore the realm of statistical mechanics by rolling dice. •calculate the multiplicity and entropy of varying dice rolls. •determine the type of distribution pattern that it follows.
Physics 223 Poster: Hubble Law, Nick Zebhideh
Physics 223 Poster: Hubble Law, Nick Zebhideh
2020 Virtual Spring Student Showcase for Research and Creative Inquiry
The purpose of this experiment was to calculate an experimental Hubble constant value and use that value to calculate an estimated age of the universe using data drawn from the Hubble Law Lab from the University of Washington. Both experimental values were then compared to the most recent accepted values respectively.
Impact Of The Degree Of Urbanization On Bird Abundance And Diversity, Gabrielle Doyle, Sheila Garcia, Sophie Kidd, Tra'dayja Smith
Impact Of The Degree Of Urbanization On Bird Abundance And Diversity, Gabrielle Doyle, Sheila Garcia, Sophie Kidd, Tra'dayja Smith
Fall Showcase for Research and Creative Inquiry
Bird diversity and abundance in Farmville, Virginia. Sampling twice a day, four days a week.