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Full-Text Articles in Physical Sciences and Mathematics
Using Principle Component Analysis Of Spectral Mixtures To Analyze Tertiary And Four End-Member Mixtures Containing Carbonates And Olivine, David Burnett
Pence-Boyce STEM Student Scholarship
CRISM images from Mars are expected to contain carbonates such as magnesite [1]. Prior research has been successfully able to determine the approximate percent composition of phyllosilicates in binary lab mixtures using Principle Component Analysis (PCA) [2]. In order to expand this model to work on CRISM images, one of preliminary steps is allowing the algorithm to work on mixtures with more than two components.
Foraging Behavior Of Red-Headed Woodpeckers In Endangered Black Oak Savanna Habitat, Mike J. King
Foraging Behavior Of Red-Headed Woodpeckers In Endangered Black Oak Savanna Habitat, Mike J. King
Pence-Boyce STEM Student Scholarship
The objective of this study was to determine the role of black oak savanna habitat on red-headed woodpecker (Melanerpes erythrocephalus) foraging behavior. Through the development of a foraging ethogram, the recording of foraging behavior times, and the collection of habitat data we were able to assess if any patterns existed between foraging and black oak savanna habitat. Comparison of our data in black oak savannas to that of others in woodland suggests that foraging behavior may differ between habitat types. Tree species did appear to impact the proportion of certain foraging behaviors, however further study is needed to more fully …
Hexavalent Chromium Toxicity On Human Epithelial Cells And Protection By Ascorbic Acid And Epigallocatechin Gallate, Timmy Mayotte
Hexavalent Chromium Toxicity On Human Epithelial Cells And Protection By Ascorbic Acid And Epigallocatechin Gallate, Timmy Mayotte
Pence-Boyce STEM Student Scholarship
Hexavalent chromium or Cr(VI) is a known carcinogen in human beings, though the exact mechanism of carcinogenicity is still unknown. The same chemical compound is also found at varying levels in the water sources of more than 200 million Americans. While the government currently regulates total chromium levels, they have yet to determine a permissible exposure limit for Cr(VI). There is currently no method of preventative treatment for the chemical. The focus of this study was to determine the mechanism of carcinogenicity of Cr(VI) as well as confirm the viability of antioxidants as a preventative treatment. Because of Cr(VI)’s strong …