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Physical Sciences and Mathematics Commons™
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Full-Text Articles in Physical Sciences and Mathematics
Lake Sediment Analysis At Heron Haven Nature Center, Erik Lato
Lake Sediment Analysis At Heron Haven Nature Center, Erik Lato
UNO Student Research and Creative Activity Fair
Understanding the chemical composition of a wetland sanctuary lakebed can help us understand how recent developments may have changed the chemical composition. Due to recent dredging by the U.S. Army Corps of Engineers and previous research on water composition at Heron Haven, the goal of this project was to determine the chemical composition as a function of sediment depth. The concentration of seven different metals and nutrients were analyzed in terms of depth. The aluminum, iron, and phosphate concentrations had no real discernible concentration change as a function of depth. There is some hint of a steady increase of manganese …
Investigating Daily Variation In Lotic Prairie Ecosystems, Dominick Caniglia
Investigating Daily Variation In Lotic Prairie Ecosystems, Dominick Caniglia
UNO Student Research and Creative Activity Fair
The goal of this project is to investigate the hydrochemistry of the prairie stream system at Glacier Creek Preserve, namely to determine the chemical behavior as it varies over time. Past sampling revealed annual/seasonal trends, which prompted this study investigating possible changes over the course of a day. To accomplish this, water samples were taken hourly for a twelve hour period in September and November 2018, and were analyzed at the Durham Science Center. All samples were obtained at the furthest downstream site available. The main focus was to study alkalinity and dissolved mineral content. Preliminary data suggests that alkalinity …
Synthesis Of A Sulfur Variant For Treatment Of Trypanosomiasis, Carlos Vera-Esquivel
Synthesis Of A Sulfur Variant For Treatment Of Trypanosomiasis, Carlos Vera-Esquivel
UNO Student Research and Creative Activity Fair
Previous work in our lab has found diphenyl ether benzylamines showed a successful response with a micromolar concentration of our lead compound to treat the deadly Trypanosamiosis rhodesience. Furthermore, mammalian cell lines saw promising resistance towards damages. The goal of this study was to synthesize a diphenyl thio benzylamine variant. This variant was more active toward T. b. rhodesience but showed more toxicity to both rat 10 (IC50 mM) and human cell lines (HFF, HC-04, U-2 OS, and HEK293). The selectivity index (ratio of toxicity to activity in the same concentration units (SI)) …