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Chemical Analysis of Morris Water Pollutants via Electrochemical Detection Methods
Get PDFIn small towns like Morris that are surrounded by agriculture, there’s an increased likelihood of contaminants to be present in the water. These commonly include heavy metals and pesticides which, in high enough dosages or prolonged exposure, can quickly become poisonous and harmful with lasting effects for both plants and humans. Throughout our research we have been analyzing the presence, if any, of lead, copper and cadmium as well as the common pesticides atrazine and mesotrione in the water throughout Morris. We look at a variety of samples coming from melted snow (collected throughout Nov. 2022–Apr. 2023), drinking water, and the Pomme de Terre River as well as the lake that feeds it. Our methods of detection include high performance liquid chromatography and various electrochemical techniques including linear sweep voltammetry, cyclic voltammetry, and square-wave voltammetry. We hope to then compare our data to the regulations and guidelines set by the Environmental Protection Agency and ensure that they fall below there commended values for human consumption.https://digitalcommons.morris.umn.edu/urs_2023/1004/thumbnail.jp
Not-so-super Superfund: CERCLA’s Biggest Issues
Get PDFThe Comprehensive Environmental Response, Compensation and Liability Act (CERCLA/Superfund) is a federal law that allows the Environmental Protection Agency (EPA) to clean up contaminated sites and hold the parties responsible for the contamination financially liable. However, CERCLA faces a number of challenges to fulfilling its mission. This report examines some of the biggest issues facing the law in the past and present
Observing the Universe with Gravitational Waves
No full textGravitational waves were predicted by Einstein’s Theory of General Relativity as fluctuations in the fabric of space-time caused by accelerated masses. In 2015, the Advanced LIGO gravitational-wave detectors observed the first gravitational waves generated in a merger of two black holes. Since then, nearly 100 similar observations have been made, revealing objects and events that would otherwise remain hidden from traditional telescopes and other detectors. I will discuss how gravitational waves arise in some of the most energetic systems in the universe, such as binary systems involving black holes and/or neutron stars. I will describe the state-of-the-art technology used by modern detectors, such as LIGO, to observe gravitational waves. Finally, I will discuss some of the recent gravitational wave observations and some of our expectations for the upcoming observation runs. - Vuk Mandic is a Distinguished McKnight University Professor at the University of Minnesota, co-recipient of multiple awards and prizes with the LIGO Scientific Collaboration, and Fellow of the American Physical Society.https://digitalcommons.morris.umn.edu/publecture/1008/thumbnail.jp
ID200 Oral History
Get PDF3rd generation woman of Swedish descent. Grew up in Illinois, and moved to St. James when she married her husband from St. James. Worked as an art teacher in St. James, on the farm with her husband, and as a homemaker raising her childrenhttps://digitalcommons.morris.umn.edu/unitingcultures/1029/thumbnail.jp
